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Патент USA US2382787

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A118- 14» 1945-
Filed Jan. 9. 1943
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Patented Àug‘. 14, 1945
s'rarr sanvnn
Trevor R. Gautier and Robert W. HoittNashua,
N. H., assignors to Nashua Gummed and
Coated Paper Company, Nashua, N. H., a cor
poration of Massachusetts
Application January 9, 1943, Serial No. 471,890
26 Claims. (Ci. 164-42)
- The present invention relates to devices and ap
paratus for measuring and dispensing selected
lengths of adhesive paper and like tape, from
supplies of indeñnite length, the successive strip
lengths being delivered in condition for adhesive
aflixing for package sealingand other purposes.
More particularly> the invention aims to provide
Figs. l5 and,16 are respectively front and side
skeletal views of associated measuring, feeding
and cutting elements,.as positioned after feeding
and measuring but before cutting;
Figs. .17 and 18 are views corresponding to Figs.
l5>and 16 respectively, showing the parts as dur
ing‘a cutting operation;
an extremely compact machine of the class de
Fig. 19 is an exploded view of elements of the
scribed, of rugged construction and efficient op
measuring and feeding mechanism;
eration, and wherein the actuating parts are pro 10
Fig. 20 shows in side elevation a portion of the
tected and concealed in _an enclosure having a
inner i'ace of the operating lever;
>minimum of projecting parts and presenting an
Figs. 2l to 23 are'detail views of a tape feed
attractive “stream-lined” appearance, rendering
guide and moistener assembly unit, separately, in
-the machine appropriate to store counters, office
plan and in rear and side elevation respectively;
Adesirs and like locations where space saving and 15
Figs. Zito 27 are a related series oi’ elevational
pleasing appearance, as well as sturdiness and
views of frame or cover elements separately,
,reliable operation, are important considerations.
In the drawings illustrating by way oi‘ example
Fig. 24 shows the inside face o1' the side cover
«one embodiment of the invention:
Fig. 1 is a side elevation of the machine or de
Figs. 25 and 26 represent the inner faces of th
vice as a whole, on a smaller scale than in the
following views;
Fig. 2 is a longitudinal vertical section taken
right and left-frames, respectively, and
Fig. 27 showsthe inner face of the front door
or cover;
just inside the right side frame; ,
Fig. 28 is a front end elevation of the machine
Fig. 3 is a plan, with the cover removed and the 25 as a whole, on the scale of Fig. 1; and
right side plate sectioned;
Fig. 29 is a-companion view to Fig. 28, showing
Fig. 4 is a horizontal section as on `the line 4_4
the rear end.
or Fis. ,2:
Referring to the drawings in more detail, the
machine comprises a combined frame and hous
of Fig. 2 looking toward the rear:
ing seen in full assembly in Fig. 1 and as to its
g Fig. 6 is a similar section but on the line 6_6 30 various component 4elements in the other views.
of Fig. 2 and looking oppositely, toward the front:
The housing as illustrated comprises two main
Fig. 5 is a vertical cross-section on the line 5
Fig. 7, on a larger scale, is a vertical longitudi
longitudinal or side frames i and l2, aV removable
side cover plate 3, herein at the right, a top cover
machine, with the rear end broken away;
4 and a front closure and delivery table 5, both
Fig. 8 is a vertical cross-section on the line 8-8 35
the latter arranged to be swung open for access
of Fig. 2, looking to the rear;
to adjacent parts. These several elements of the
Fig. 9 is an enlarged detail section taken hori
housing have each an integral one-piece con
zontally on the line 9-9 of Fig. 8, illustrating a
struction, being formed preferably by die casting
portion of the feed control means, and Fig. 10 is a
similar section with the parts diiierently posi 40 of a zinc or other metal composition or alloy or
by molding of a lplastic composition. In this
manner the side frames | and 2 and the side plate
Figs. l1 and i2, on sheet l, are further vertical
3 are made to present at their inner faces all the
cross-sections, Fig. ll .being taken near the front
reinforcing ribs, fins and> such formations and the
or delivery end of the machine as on the line
H-II of Fig. 2 and looking forwardly, while Fig. 45 various lugs, bosses, projections and the like as
appropriate for the mounting and positioning of
l2 is taken near the rear of the machine as on
the operating parts to be describedI and for read
the line l2-l2 of Fig. 2 and looking rearwardly;
ily and demountably securing togther the hous
Fig. 13 is an elevational view of the right side
of the machineI with the outer side plate of the
ing elements, thus providing a smooth surfaced
housing removed and with the operating lever 60 and pleasing exterior for the resulting portable
machine unit. '
demounted from the latter and positioned on its
nal section substantially centrally through the
shaft, for explanatory purposes;
Fig. 14 is a fragmental view corresponding to a
Noting particularly Figs. l, 28 and 29, the hous
ing has none of the usual externally visible secur
portion of Fig. 13 showing the measuring and feed
ing means such as nuts, bolts, screws, clips and
55 the like connections. It is also noted that the
control parts in different position;
side plate 3 is so shaped and correlated with the
adjacent frame member 2 as to match externally
Tape rolls of different widths Within the capac
ing a well-balanced structure of symmetrical and
ity of the machine are laterally centered in the
supply chamber by means of adjustable side
guides or plates I3, I4, Figs. 2 to 4, '7 and l2.
attractive contour as viewed from any angle.
These side frames I and 2 are respectively
. These plates are slidably and pivotally mounted
at their upper forward portions on a crossbar I5
formed with invvardly extended rear ends I a and
2a adapted to abut laterally in opposed relation'to
1h'f_1\_fir,1g,ii_«s opposite ends removably supported in
with the opposite one-piece side frame I, afford
aligned bosses (_6, I‘I on the respective frames I
provide an enclosing lower rear wall'for the hous
ing. These frames are separably joined by a,
minimum oi' interconnections, to be referred to'V
and '2;"see also Figs. 25 and 26. The floor mem
ber 8 further serves in positioning these lateral
g‘ùides I3, I4. For that purpose it has a series
>o'f transversely spaced slots II at its forward por
in connection with the various other functions
which they serve. Along their lower> edges the
side frames l and 2 are formed with> blasé flanges
Ib and 2b provided with cushioning pads'ß, 5,'e'tc.,
of rubber or other resilient composition, desirably-
recessed at their underface for increased holding
ti'o‘n, and a corresponding longitudinally aligned
rear series' of spaced slots I9. The guide plates
iii, 'lfiaaveî do'ilhjn: projections i3d, Ida at their
forward ends, Figs. 2 and 7, and other depending
members |31), Hb at their lower rear portions,
eifect, and securely set into conforming inverted
sockets l, ll etc., in the side frame bases.
adapted for'posit'ioning reception in any selected
aligned pair of the forward and rear slots respec
At the rear portion of the machine, the space 20 tively. By lifting the guide plates about their
between the side frames I and 2 and'withinïthe
supporting bar` their 'slot-entering portions >are
overlying portion or the conforming inverted
disengaged, permitting the plates to be shifted
laterally as appropriate for the particular vvidth-
trough-like‘top cover 4 provides a chamber fora
supply of the adhesive tape or strip in roll form,
of tape; such as 3/4, 1,1%, 11/2 inch, etc.
as indicated at T, Fig. 2, positioned in this cham 25
The floorI and- under-guide '8 Ialso has formed
ber in readiness to be drawn upon. Such supply
in its'fo'rward portion an_ elongated central slot
roll ls supported on a combined floor andunder-~
8a, Fig. 3, givin'gacces's to the ’underfa'ce of- the
guideV l comprising a single piece of metal or other
strip material continuous from the 'rear ot the
tape by the driven‘feeding" and measuring wheel
or roll 20,"Figs.'2ïto"8~'an`cl 19.
lower leed
tape supply chamber to andbeyond the rotary 30 Wheel 20 ’acts "in' cooperation’with 'an overlying”
tape-engaging elements of‘ the'feed means to be
described. The rear end of this tape support‘and
and herein relatively smaller feed'vgh'eel oi-"r'oll
to'engage, nieasu?e‘o'ut andTad-vance'the'tágë
between> them -and A'past the -severing and At ‘_ef
guide l serves as one interconnection for the side'
frames. For this purpose it is lapped horizontally
moistening means', ior'delivèry in‘mois't'eneid ‘co'r'i`_-AV
against projections 9, III on the frame rear' walls
dition at'the'frònterid ofthe machine.
la, la and there secured as by nuts and bolts Q_d,
I0a, Figs. 2 and 4. This guide flooring B_'h‘as'a
width adapting it to space and brace the side
frarries. It is positioned vertically and' also
lengthwise by a series of locating nubs II, I2 pro 4.0,
jecting from the respective side frames and dis'
tributed along the adjacent edges of this guide
The top cover d_extends nearly the full length
ot th'e machine. Its front end terminatesat and
in. part defines the delivery‘station fo?'the Vmois
located on theV carrier as toproject below` the'
guide foot 25.l Tliuls‘ivithìtheroll in itsop'erative`
position‘ag’ainst 4tiie'lovv‘er> feed rpll 2li, o_r incon-`
mi with
ieee between", :html ,the avide fos?
2 5, is properlyy spaced vertically' to :deling vviththe'
forward p'ortionoi th'ejloori'ngß, avchuvte or guide
for the
advancedïforivardly beyond thejiçed
these" pins are each of a length to extend tl'i'rouglfiv
aligned bearing 'apertures in vertical ñanges 4b
transverse bearing luîjabove; the' ears.` 2_2 ancien
uprigh't,‘p_lijtio'n 24,` folrfrecep'tî’on looselyfon a
cross shaft zy‘Figsfs, te?, said cresgsheft serv;
ing as afhori'zontal 1pivotal suppnrtL for.'tiie‘,'iip_r_:4er`
roll carrier asa' whole and also as -a crosscoiiì
ting the cover to be removed bodily and as easily
restored. Reinforcing ribs 4f at the inner faces
ofthe cover, Figs. 2 and 7. are projected below its
nection. between the side framesi and 21. For
this purpose the` frarlnes‘haveat transversely. on
posite upper portions ’uprig'lht' brackeislic, 1f,
side edges as feet 4Q to aid in firmly positioning
the cover laterally on the respective side frames.
Figs. 25, 26, apertured vfor screws 21a, ìlóitappep,
into trie respectivelendsio'r the cross shaft 2i.“
This cross sha‘ftalslo supports springrmc'aîns ior
The lower edge oi the cover tongue dc is rounded
andthe adjacent horizontal upper edges of the
frame rear walls lu, 2o are correspondingly
pressing the upper feed'roll, 2_I against the tape
and keeping it in feeding and measuring relation
to the lowerroll (ni-,wheel .20. Such'spring.millenni:`
arcuately beveled, as at ldÄ 2d, Figs. 25, 26, to
provide an overlapping joint in the closed position
ofthe cover 4, The latter is stopped and held in
herein comprises a pair oi duplicate coil springs
Z8, 28 set on the shaltv ïîatlopposite sidCS oi the
its Substantially' vertical lull«open position by en
roll carrier, between the latter,and the sideY frame
gagement of th»` outer face of ity,- tongue 4c down
upon the top of The frame rear walls In, 2a.
The upper roll carrierI further comprise; av
ders‘for the opposite ends of a retaining spring
leÁ ‘By merely unseatlng this spring, the cover
pivot pins may be withdrawn inwardly, permit
an apri‘g‘iit'po'rt'iori :i and s, tetten met, er piste
25 projecting iate?aliy'beytnçi'tne ears zi` and
having'a s'mooth flat'underfa'ce toserve'asi a,` tgp'
guidev for the tape immediately forvvardót' the
reer'ni thejsifie frames. The latter have 'opposed
sockets lc, :erige 3, 25 andas. for ‘horizontal
pllti’g'ïllkepivot pins la. Noting Figs. 2, 3 and ‘12,
ing‘from the base' of the rear wall ld ofthe cover
l. These pivot pins la are of reduced diameter
at their inner ends to provide abutment shoul
rearwardly projecting e`a_r's` 224, ‘22 holding. apin
feed'rolls. 4The -upper‘roll'Zl i's` of ‘a sizeand so
teiiedfmefa'sured lengths olltape to be dispensed.
This 'co'vetr `is readily removably hinged at the
projecting forwardly from a tongue ‘c depend
ed o'? a‘ combinedA roll carrierI and >tapegïiiigle,y
herein formed as a unltarycastingj Figs. '2„ à and
5 to B. It corriprises_e,` 'pair opiaterally spaced
23 onV which the upper roll 2| is f_reelyrotatablé,
This carrier and tape guidev unit further includes
flooring I, some below and others above'ìtl‘ielat
ter; Figs. 3, 4, '7, 25 and 26.
'I"he"uppe`r` feed Vand measuring` Vroll 2i is mount.
brackets Ir, 2J:V see particularly Figs. 2, B-apd‘
5 to 7. These springs have rear legs 28o, uq
hooked overthe respective ends’ o! the'roll pin
23;‘and _forward legs- 28b,-.28b tensioned across
sociated with the side cover plate `5l, so as to
remain with the latter during removal and re
the upper'edge of a cross member~|15 the bottom
placement of the plate.
edgeof which- provides‘the iixed <cutter element
Accordingly the hand lever 50 has at is lower»
ofvthe tape severing> means, to be described., For Cfr end a lateral hub 52 adapted extend' 'through
lifting the upper :roll 2|, and with it the top guide
a corresponding aperture 53 of: a boss 53a. Íon the
platef25yto :exposezthetape path for inspection
and cleaning-purposes, therroll carrier has an
upwardly and 4rearwardly projecting lifting lever
29 formed integrally with the lroll carrier unit
and presentedfor convenient engagement by the
operator's fingers, on opening the housing cover
side plate 3, seealso Fig.' 24,-V said plate aperture
having horizontal radial- recesses “or slots 53h.
The lever hub 53 has at its inner'end a pair of
inwardly and also radially .projecting ‘lugs’ 54,
54, best seen in Figs. 19'and 20. lAt the outer
face .of the side plate. between it and the lower
end of the lever,` is a thrust washer 55 centrally
Novel means, of extremely compact construc
apertured at 56 for reception `on the lever hub
tion and arrangement, is provided for actuating
53 and having 'radial recesses 51, 5l for passage
ther feeding and measuring mechanism, in asso
of the lever hub lugs 5.4 in assembling the Washer.
ciation with the moîstening and severing means.
After this washer 55 is passed onto the lever hub
Referring to Figs. 2,4 to 8 and A19, the lower feed
the washer »is given a quarter turn, Vbringing its
roll or- wheel 2li »is mounted to rotate, in the for
radial recesses 5l out of line with the lever hub'
wardU or feeding direction, counter-clockwise in 20 lugs 54, and into line with a. .pair of shallow lugs
Figs; Zand 19. on a. stationary main shaft 3U.
At the' left of the machine said shaft is held in a
recessed boss 3| on the side frame I, see particu«
larly Figs. 8 and 25, while its opposite end pro
Jectsfreely through a bearing aperture 32 inthe
iramefiand laterally out through an opening 53
in the side cover plate 3; see also Figs. 24 and 26.
The feed wheel 20 has at its left face, Fig. 8, an
elongated hub 20a loosely received on the shaft
30, the hub >together with a washer 33, spacing the
Wheel relative to the frame l so as to present it
centrally of the tape path.
5ta at the inner face of the lever; see Fig. 20.
These enter the washer recesses 51 and> hold it
against turning relative to the lever. The lever
hub is then inserted through the apertured boss
53a of the cover plate 3, the hub being positioned
with its lugs‘54 horizontal, in line with the radial
recesses 53h of the cover plate. A second washer
and lock ring 58. with‘simílar central aperture 58a
and radial recesses 58h is then passed onto the
lever hub, at the inner face of the cover plate'and
given a quarter turn to carry its recesses out
of line with the lever hub lugs 54. This brings a ’
4At its other face thevi’eed wheel 20 carries a
non-recessed-portion of the lock washerlSB 'be'~
pawl 35 pîvoted on a stud 36, as best seen in Figs.
hind the lever hub lugs, between them 'and the
2, 8 and 19. A ñat spring 3l having one end Il. cover plate. Thus the lever is demountably
bent to engage around a button 38 on the wheel
locked in. assembled' position on the plate. yet`
20 presses the pawl toward» the wheel axis. A
left free to swing' in the vertical plane relative
.similar button 39 depresses‘the‘spring at, an`
to it.
intermediate point, to tension it. If desired, a
In some instances, particularly where. as here
shifting pawl such as that of vGautier Patent
shown. the radial lugs 54 of the hand lever 50
2,290,041 may here be employed.
are out of line with the cover-plate slots 53h in
The pawl 35 coacts with a ratchet disk 40 so
all operative positions of thev hand lever when the
that the wheel 2D receives rotation in the forward,
cover plate is in place, either or both of the outer>
feeding- direction- (counter-clockwise in Figs. 2
and the inner, washers 55 and 58 may be dis
andy 19) but‘is left at rest during reverse return 45 pensed with. In such case the hubof the handl
rotation, clockwise,v of the ratchet disk and as
lever may have a slot-covering flange correspond
sociated gearing.~ This ratchet disk dll is mounted
ing to the outer'washer 55 formed integrally with
to turn on the cross shaft 3U, which also carries
it, while its lugs 54 may be appropriately ex
the further train of operating parts to be referred
tended axially by substantially the thickness of
the inner washer 58.'
At the right side of the ratchet disk 4l) and
In addition to the feed elements described, the
separably connected to turn with it is a coupler
shaft 30 also provides bearing support for the
4I having connector lugs 42 at its inner end -lor
hand lever 50 and for the operating crank 60
reception in corresponding recessesA 43 in the
which transmits motion from the hand lever to
ratchet disk. At its other end the coupler 4i
the other actuating parts. This crank 6U, of a
has similar connector lugs 44 fitting in recesses
general bell-crank form, has fixed on it a laterally
45 in the hub of a pinion 46. This pinion, the
extended bearing sleeve 6| rotatably received on
coupler 4l and the ratchet disk 40 accordingly
the projecting end oi' the shaft 3D. The hand
rotate as a unit. The coupler dl and the pinion
lever hub 52 is centrally recessed to receive this
45 have a joint extent along the shaft 30 so as 60 crank bearing sleeve 6I and the enclosed end of
to lit snugly between the feed wheel 2U and the
the shaft 30, so that the sleeve and shaft afford
right side frame 2, all the described parts on the
the bearing support for the hand lever, rather
shaft 3D consequently being correctly located and
than the side plate 3. The side plate 3 itself is
held laterally by and ,between the two side
demountably secured to the side frame 2 by a
number of screws 3a extending out through the
to, all rotatable on' it.
The feeding and measuring means, as well as
the cut-off mechanism, to be described, are oper
ated by the hand lever 50 disposed conveniently
to the operator’s hand and having a finger-en
gaging piece 5i at its fore end resembling a but
ton or push-key; Figs. 3 and 4. This hand lever`
herein at the right side of the machine, is the
only exposed :moving part, as evidentV in Figs.
l, 2li-and 29.
For assembly purposes it is asf
latter into bosses 3b at the inner face of the cover
plate 3; see Figs. 4, 9, 10, 12 and particularly
Fig. 24.
The crank or main actuating element B0 is
directly associated with thel hand lever 50 and
is seen separately in Fig. i9. It comprises a rear
arm 62 having a stop foot 53 at its outer end,
an intermediate depending arm Bd, and a for~
wardly extended length-control arm 65.
for all lengths of feed stroke, including extreme
thefma‘xiinum' retractive elîect of the then eX
ly short strokes as well as those of maximum
_tended'main spring |00 and hence neutralizes
of the hand lever.
the lever‘return 'stroke'the compensating spring
|03 -exerts ’itsV expansive effort until the return
of the parts pass said linel Ll-L. By properly
length. But under a compensating` action’the
return force is made more nearly uniform for the
different extents of forward or feeding motion
the» latter to a corresponding extent.
Such mechanism herein comprises a first Vor
proportioning the springs |00 and |03 relative to
main spring |00 of the retraction type, best seen
eachother a ‘substantial uniformity of return
in Figs. 13, 14, also Fig. 5. It is attached at its
action for the handïlever and associated operat
Generally with a con
lower end to a pin I0| on the length-control arm 10 ing parts maybe had.
B5 of the operating crank 60„and at its' upper end
to a pin |02 at the outer falce of the side frame
struction and arrangement as illustrated, the
compensating spring |03 is considerably lighter
than the main spring |00.
with the dowward stroke of the hand lever 50,
‘Turning 'now to the severing of the measured
the greater the feed stroke length, the greater 415 Vlengths of moistened tape, the mechanism for
the spring tensioning.
2. The tensioning of this spring |00 increases
this purpose is operatively associated with the
In cooperative relation to this main spring |00
described feeding, guiding and measuring means,
is a second or compensator spring |0301' _the ex
-and 4isy actuated '- automatically through‘ the
pansion type. It is so‘disposed that at'times it
medium of the`hand lever 50.
work with and supplémentsv the action of the 20
The cutter element comprises a. fixed blade
main spring |00 while at other times, and par
||5 transversely positioned on the frames | and
ticularly in connection with the longer feed
2 withits lower edge just above the tape path,
strokes, it opposes and tends to neutralize vthe
in shearing relation .to the movable blade |10.
action o1' the main spring.
At its left end, Fig. 5, the >fixed member ||5 has
The compensator spring |03 surrounds a
a reduced portion ||5a received in a seat H511.
plunger |04 having at its upper end a collar |05,
Fig. 25. on the frame |,"while its other end pro
see Figs. 5 and 8 to l0, pivotally received on a
jects laterally through an opening ill in frame
projecting portion of the stud 69 on the inter
2, 4Figs.f13, 14 and 26, and is supported by a
mediate arm 64 of the crank G0, which stud as
previously mentioned provides the bearing for
the traveling gear 10. A nut |0B‘ho-1ds the
plunger collar on said stud, and the latter in
Abracket ||8 removably held on the frame 2 as
30 by screws IIBa. ' The projecting right end of this
'fixed blade H5 has a depending portion which
is apertured for a stud |'I9 extending through
assembled position on the crank 60. The plunger
the adjacent end of the movable blade H6 and
|04 carries a washer |01,against which the upper
end of the spring |03 bears. The lower portion ' 35 through the lateral arm ||8b of the bracket | I8,
said stud Vproviding the pivot for the movable
of the plunger is slidab-ly receivedl in a sleeve‘ |08
blade | I0 and the means for connecting the right
having a reduced lower portion |09 removably
end of the associated fixed blade H5 to said
seated in a corresponding aperture in a bracket
||0 swiveled on a stud ||| on’the adjacent side
frame 2.
The movable bladefllß normally occupies a
position clear of and herein below the path of
In Fig. 13, with the hand lever„50 in rest posi
tion, the compensator spring |03 is substan
tially free of compression. By reference to Fig.
14, it will be seen that in the4 course'of a down
stroke of the feed lever and accompanying swing- - ~'
ing of the crank 60 in the counter-clockwise di
rection the auxiliary spring |03 is tensioned com
pressively up t0 an intermediate position of the
through the medium of the crank S0 already de
scribed. 4
parts somewhat short of that represented in said
figure. As there shown the feed‘ lever 50 has
completed an approximate three-quarter maxl
mum stroke such as for the 6-inch feed length
setting described. On Fig, 14 a center line L-L
isindiCated. through the feed lever axis 30 and
the spring .bracket stud |||. With reference to
said center line, the supporting stud |59 of the
spring-positioning plunger |00 has in effect
crossed center, passing to the right Yof said line.
Accordingly, the spring |03 has passed its maxi
vthe- tape, Figs. 5’a_nd- 6; see also Figs. l5 and 16.
In cutting the tape it is raised to a position sub
stantially as in Figs. 17 and 18, making a rapid
up cutting stroke with immediate return. This
_is effected by a trip mechanism and operating
connections associated with the hand lever 50
Referring to Figs. 5, '7 and 8, also to Figs. 15
to i8. the pivot stud 09 for the traveling gear 10
and which is mounted in the aperture 68 of the
intermediate depending arm 0A of the crank 60,
projects in beyond `said gear 10 and supports in
fixed angular relation to it a depending ñnger
|20 having at its lower end a trip element in
cluding a pin |2| rotatably carrying a cam roll
|22. This cam roll ñnger |20 and its support
ing stud 69 have a limited angular movement or
`mum compression and has been partially re 60 lost-motion eiTect Vrelative to the crank S0, as
provided by a squared portion 69h received in a
lieved. Hence during the ilrst part of the lever
like recess 51a a't the inner face of the boss 6l
return, the compensator spring must be com
on the crank arm 84. Said recess Ela has a
pressed. in opposition to the retractive tendency
slightly greater angular extent relative to the
of the main spring» |00. It will 'be evident that
axis of the stud 69 than the squared portion 69h
this compensatory action is correspondingly ln
of the latter, affording the lost motion referred
creased for any greater feed stroke and return
to and facilitating the tripping action for the
action 0i' the hand lever 50 beyond that illus
trated in Figs. 13, 14.
Thus, under a condition such as that of Fig. 14,
upon release of the hand lever 50, the initial
effect relative to the compensating spring |03
is to compress it, up to the point at which the
plunger stud G9 recrosses said center line L-L
of Fig. 144 This compressive action on the com
pensator spring |03 is in direct opposition to’
The cutter actuating means further comprises
a trip lever |23 extending horizontally at a lower
inner portion of the side frame 2, herein adjacent
the rack TI for the swinging gear l0; see Figs. 4,
’7 to 1D, l5 to 18 and 26. This trip lever |23
has a bearing collar |24 at its rear end whereby
it is mounted to rock vertically on a stud |25
projecting from a boss -|26on theside frameû.
»At its front end‘thísitrip leveri23=ispositively
connected to the movable .blade illiasbya' rigid
link~|21 having lower and upper hook-like pivotal
.connectors |28, izaproiecting at diii’erentangles,
so as respectivelyto extend crosswise and length
.finger is thusvpreparatorily~carried to-the 'rear-.oi
,thedogduring _»an early-part of -the .,given. feed
stroke. including --the `shortest.
:The ¿position 1 of
.the described parts Yasf-sii; cnnear `the .endl off one
of: the longer feed- strokesis represented in- Fig. 16,
a skeletonized view looking from'the fright-sidefof
'the machine, similarly` as- in Fig. 2, therear ofthe
machine in-.thisA instance beingatfthe-right.
wise'of the machine. `'I'heJlowe'r connector -|20
isf'pivotally received'in an :apertureat'the fore
- On release .of the-.hand leveräß at completion of
end-of the-tripleverJî-S, while the upper con
nector |29 is vsimilarly attached to an inter fLO .a down orfeed stroke, its described return means
causes the\trip.ñnger -|.20 «toreturn forwardly,
.mediateportion of themovableblade ll'B. The
.toward the left in Eig.,«1ß- (toward the'rightonFig.
.Y l. In-»thecourse of this returns movemen-t,1when
and the swinging blade H6 -forfupand down
the .tape .feed has beencompleted and the tape
movement together. Duringsuchmovement the
link moves'pivotally both laterally and'also longi 16 accordingly isl at rest,~the cam roll. | zlengagcs the
rear inclined face |31 of|30,-.strike5rthe
tudinally .of .the machine, asrpermittedaby the
abrupt shoulder .|.31a».of..the latterfandtthrusts
pivotaleconnectionsat lts'opposite end; .compare
the trip >lever `|13 .sharply .and .rapidly upward.
~Figs. 15 and 16 respectivelywithllï‘igs. v1"! and .18.
»The trip. linger LZUand-itscamzroll |23 continue
The pivoted bladezis operated'through the‘de
their .forward returnduringa remainder of the
scribed link connections with the triplever |23,
hand . lever. return .movement, .the cam roll. pass
the latter in turn actuated in `afiîecd
ing forwardly .beneath therlowestportion .of-,the
ing and return movementrof'thehand lever=|i0.
.dogsofasto bring .theiatten againto its initial or
NotingrFigs. 'land .13 m18, `thecan‘rrroll linger
rest position of Fig. '7 infrontof .the dog IJDrand
. |20 swings rearwardly during a' forward >aniiïdown.
immediately below its zforward.inclinecliace »136.
ward feed stroke» ot the hand lever-“Land iszre
The .p osition` of the „parts duringsuch- trip-lever
turned f orwardl yavith' the: hand lever return. yThe
,elevating-- action,~ivith the cam roll. |.22-.just on the
describedftrip lever«|.22 iii-'actuated lay-said nnger
point 0f-passing íorwardlytundervthe lowestmor
|20 in conjunction with the handìlever return.
.tlonoi the. clog |3'0,.is.illustrated in Fig.. l8,.a`view
For this` purpose the trip,»lever-|23 carries'a-trip
link |21 : accordingly . connects ‘the - trip .lever |23
member or dog |30 pivotaily hung on. it between its ,30
ends, as .at |3|; `Figsfl, `ifiand 18. This dog has
front and rear arms L32 and .N3 respectively
.Through .the described ,pivotal link i connection
|.21 between the .trip'lever |23 and-the movable
bladel I'E ,seen thatthegulck, positíveup
overlying -stops l34.and»|35»on .the -trip lever for
throw of the trip lever |23 affords an extremely
limiting .its vertical rocking movement. -At its
under 4portion this .dog has `oppositely linclined 35 rapl'd shearing actionjforthe blade, with .substan
tially instantaneousrelease and return thereof to
cam races |38 and |31,^.the rear Aone otwhich pre
its normal position clear of and herein belowthe
sents|31c,.for'coopertapepath, inimmediate readiness for severing a
ation with the cam roll |22 of the trip ñngerHU.
succeedingA length of tape. The lost motion con
In the normal or rest positionrotthe parts, in
nection between‘the trip’îlnger |20 and the op
.which the handlleverjilïiselevatedas in Figs. 1
erating crankjü, by reason of the radialrib and
and 13, noting also particularlyFigr'l, the cam» roll
|22 stands in iront ofthe forward cam surface |36
of the plvoted dog |30. Asthe hand lever .50 is
depressed for a feed stroke, thecamor trip ñnger
slot ~structure,previously described, facilitates' the
movement of the cam roll4 I 22 past'the pivoted dog
|30,vparticularly With‘the latter in either ¿of ¿its
positions, such lfor example .as in Fig.
|20 through the mediumof the crank iß-isswung 45
i8. Likewisethe lost motion between the `han'cl
rearwardly, toward the left in Fig. .7. During
lever .50'an'd the 'drivenfecd wheel 20, as may be
this'movement the pivoted dog |30 is liftedidly,
provided;for'-by appropriate clearance between
to an `extent limited by thefront stop |31 von. the
:the -hzaincllever lugsill vandthe recesses i6 onV the
trip lever.|23, the cam roll I22.passing-.under-the
lowest‘portion of the 'dogisoasto.belbrought be-` 50 crank B0, Fig.A 1'9, or‘by theA use of a shifting paivl
such as lthat ‘of vPatent No. 2,290,041„previously
hind its rear cam surface 131.
referred to,'or4 both, avoids’interference with the
‘As the feedstroke of theîhand‘lever-contínues,
cutting action ’due to occasional rebound of the
the linger |20 and its cam roll |22 move on back
‘ihan'cl lever.
its' initial position as ‘defined by down engagement 65 'The movable'blade |`|‘6 and theitrip lever |23
are together-returned to and normally held in
of its rear arm |33 with the corresponding stop
their down position, 'as in‘Flgs. '1. l5 and i6 (see
|35 on the trip lever |23. This down movement
away from the dog |30, the latter tipping back to
of the dog takes place by gravity, since the por
tion of the dog behind its pivot |3| is the heavier.
In the illustrated construction it is accelerated
and made certain by the knife'and trip-lever re
turn-spring MU, which has its lower end connected
to the front `arrn F32 oi the dog ~as4 by'a pin |-32a
thereon and its upper end connected as at‘lll to
a portion of the movable blade ||`6 'remote from
the pivot oi the latter, in a manner to be referred
The extent of movement of the trip finger |2|l
rearwardly past‘the clog as just referred to de~
pends on the degree of depression of the 'hand
lever 5|), in accordance with the.~se1ected tape
length to be measured out. But regardless of
the length of tape delivered within the available
range, the construction and arrangement of the
parts herein is such as to insure that the trip 75
also Figs. 5 and B), by means of the coil spring
H0 which interconnects them.
From a consid
erationrparticularly of Figs, l5 to 18, it is evi~
'cient that this spring |40 has a vertical bodily
movement with the blade and the trip lever |21,
'during which it lalso is extended and further ten
sioned. In the down or rest positions of these
parts, as in Figs. i5, 16, the spring normally
stands under sorne‘tensionl holding the blade and
the trip lever ‘as -closely‘together as their inter
connecting link |21 permits. Since such‘condi
tion of relative approach of the blade and the
,trip lever can only behad with the blade open or
down. as inFigs. l5 and 16, the spring normally
pulls and holds the blade down, and through the
link |21 likewise depresses the trip lever |23.
vThe lower end of the link |21 is more remote
from the lever pivot |25 than the upper end of
the link is from the blade pivot ||!~l. Hence for
a given angular up movement of the lever |23
the link accords a greater angular movementl to
the blade IIB. At the same time the free end
of the blade, including the attaching point |4|
of the upper end of the spring |40, which is more
remote from the blade pivot than the upper end
of the link |21 is, receives a greater lineal up
movement than does the lower end of the spring
by its connection to the lever |23 through the 10
Where such positive stop means as afforded
by the stop 10a is employed in combination with
a buffer element such as the resilient back-stop
15, these two elements are so relatively arranged
that the buffer-engaging member, herein the
foot 63 on the arm 62 of the lever-operated
crank 60, will engage the buffer 15 substantially
simultaneously with or a brief instant after the
striking of the stop 10a. against the finger |20.
Thus the momentum of the parts in the return
dog |30.
direction may largely be absorbed by the buffer
Consequently the spring is extended and addi
tionally tensioned during up movement of the
but with little or no actual compression of the
ment of the trip lever |23 as well as that of the
the roll arm or finger |20.
latter. The result is an extremely positive stop
blade and its trip lever |23. But as soon as the
ping action, substantially without reboundv or
cam roll |22 has cleared the dog |30, just for 15 tendency of overfeeding of the tape at the end
wardly of the position shown in Fig. 18, the
of a lever return stroke. As above indicated, in
spring |40 is free to contract. To do so it must
some instances the buffer means such as 15 may
bring the blade and trip lever closer to each
be dispensed with. _In such constructions, or
under the provision of the joint stopping ele~
other, to the extent which the link |21 allows.
The effect is to pull down the blade, and, through 20 ments as herein illustrated, the stop pin or screw
10a. may carry a fibre or other collar 10b for the
the link, to thrust down the trip lever, into the
rest position of Figs. 7, 15 and 16. Down move
direct contact with the engaged element such as
blade, is halted in this position by a fixed stop,
As previously indicated, the tape from the sup
herein comprising a pad or cushion |42 on a 25 ply roll T (Fig. 2) is advanced along the under
bracket |43 projecting from the adjacent face
0f the frame 2; see also Fig. 5.
guide 8, by the engagement of the feeding and
measuring rolls 20, 2| with its opposite faces, the
It will be seen also that the spring |40 has a
tape passing `below the guide foot 25 of the upper
rearward and downward inclination, its lower
roll carrier and forwardly past the severing
end being anchored somewhat to the rear of the
means and below the fixed blade ||5.
pivoted blade I I6. Thus it has a component force
this cut-off point the leading portion of the tape
effective to bias the movable blade toward the
?xed blade H5, affording them an eiilcient coop
erative shearing action.
is advanced to and past additional guides and
correlated means for moistening its gummed (un
der) face.
Such means comprises a tank or reservoir |50,
best seen in Figs. 2, 4, '7 and 11. Desirably it is
including the resilient back-stop or buffer 15 for
formed of a plastic transparent or semi-trans
halting the return motion of the hand lever and
parent composition permitting the level of the
associated reciprocating parts of the feed action.
contained moistening liquid to be observed. In
In some instances, particularly Where a rapid
return stroke is desired, yet without attendant 4l) this tank is removably set a capillary moistening
element, such as the inverted brush |5| resting on
objectionable rebound or overfeed, such means
its butt I5 la. The bottom wall of the tank is pro
may be supplemented by, or have substituted for
Jected up, centrally, in an inverted V-formation
it, means affording a braking or positive stop
|52 transverse of the tank. The oppositely in
ping action on and through a rotary member
"45 clined walls of this raised formation serve to
of the feed mechanism.
direct the butt of the brush |5I into correct posi
Herein for the purpose such arrangement is
tion in the tank, substantially as in Fig. '7, when
shown in connection with the intermediate or
the brush is merely dropped into it. The side
traveller gear 10. As seen in Fig. '7 and particu
walls of the tank have central vertical ribs |53
larly in Figs. 16 and 18, said gear 10 has at its
At an earlier point We have described means
inner face, its face adjacent the cam-roll arm
at their inner faces, each with a slot |54 at its
or finger |20, a laterally projecting stop member
upper end to support a removable partition |55,
of similar material as the tank or otherwise. The
such as the pin or screw 10a.
In the normal
or rest position of the parts this stop 10a stands
against the forward edge of said arm or finger
|20, substantially as in Figs. '7 and 16. As the
gear 10 travels bodily rearward along the rack
1| in the course of a feed stroke, the rotation
of the gear carries the stop 10a away from said
finger |20, to a position such for example as in
Fig. 18, which shows the parts as at the end
of a less-than-maximum feed stroke.
On re
lease and return of the hand lever 50 and with
it the gear 10, the stop 10a returns rotatively to
its initial or rest position of Figs. 7 and 16,
bringing up positively against the forward edge
of the finger |20. Further rotation of the gear
10 being thus positively blocked, the gear cannot
move further forward along the rack and ac
cordingly further rearward return motion of the
hand lever 50 is positively stopped. The energy
of the halted parts is taken up in part by the lost
motion mounting of the finger |20 previously re
brush |5| is adapted to incline forwardly against
this partition, with the free ends of its hair or
bristles projecting above the tank. By reason of
the removable partition or upper support for the
brush all the interior of the tank is readily ac
cessible for cleaning. As thus constructed the
tank is reversible end to end, so that the brush
may be located in either half section of tank and
the latter inserted into the machine, with the
then brush-carrying section to the rear. This
automatically positions the upper end of the
brush in correct moistening relation to the un
der face of the tape.
Referring to Figs. 2, 7 and ll, the tank assem
bly as a whole is removably positioned between
the forward portions of the side frames | and 2,
upon a pair of opposed horizontal ribs |56, |51 on
the latter. Inward movement of the tank is lim
ited by one or more lateral projections as at |56`
Fig. >2, and it is held against forward displacement
by lugs |59, |60 on the respective side frames
ferred to and by the interengaged gear and rack,
substantially eliminating any tendency for the
and having vertical rear faces to abut the lower
gear to turn reversely, in the feed direction.
75 front wall of the tank. These lugs may also serve
Lasèpositioningîstops fontheîfmnt closure ‘element
:5,atogether1with the outer ends of lupperïand: lower
[email protected] .from >`a. position closely adiacentïthe
:movable blade 'I lili out'lnto lclose‘\promixityiwith
fhurizontaliribs MBI, »E92 :and |83, ` |94, =Figs.'i11, 25
the'upper end of thiezbrush> |‘5|. The‘rear edge pf
‘this bottom’ guide Hill is downwardly inclined “asia
"lip tBI to receive and direct the' leading edge óf the
tape with ï‘certaiïnty onto` it. Opposite lateral por
:and .26,.ron ¿ther respective-,side> frames. ` These lat
ber ri'bsi'also ‘guidefand locate the tank laterally;
‘inthe closed position of the’front closure‘iä, the
tankiiß is held down by a hook-like projection
|65 at .the inner face of said'closureiâ. adapted
to'pverliel the topV cdgei of` theltank front `wail,l as
best-seen'infil‘ig? ; Ysee lalso Fig.f27. Thetarik unit
mayrreadily befiiftcd'out fromithe'machine on
swinging'the frent‘closure 5 toëlts open position
shownrin Fig. 7. This front'rnember also añords
‘tionsof this lip 18| are extended to v'form y'sup
lporting 'collars |82, y|33 for pivotal reception "on
opposedibearing bosses HM, |85 cast on the‘side
»i1-ames ~| and ‘i2 and which provide rhorizontal
pivotal support for the guide and depresse’r unit
asia‘whole. .The rear lip IBI on the plateV Ißßfalso
has a downwardly projecting ringer |86 adapted
lto bear against the front face of the bladei I6
a convenient location‘for‘the name plate |66 held >
V»attimes whenthe brush and tank have heenre
on a'rectangular frame HiL‘Figs. 7 and 27, at the
inner faceof the closure. Such plate |66 itself
rricoveri, and thusto keep the guide-depresser unit
serves-:as Va .further Vfront'positioning means for
cupiedlby the tank. Hence when the tank is tolbe
reinserteli the operator need give no special "at
tention to lifting Vthis guideádepresser unit.
Àthe tank [50.
As mentioned earlier, this front closure 5 also
provides Ya delivery table or Vguide for the mois
from dropping down into the space normally oc
Along its lateral edges the bottom plate M0
tenecl-lengths of'tape dispensed .by the machine.
hasupturned flanges tsl, ‘ |98 which projectffor
For this purpose its main Wall is in-'turned at its
upper end and is projected rearwardly andfsome
wardlylbeyond the front edge of the plate Vand
there provide bearing support for the end pintles
what downwardly to fform a delivery guide HJ). _l
»W9-of `a tape presser or depressing elementin
the form of a circumferentially grooved roll |90
adapted to rest on the toplface of the tape op
.positeithebrush or directly on the brush inthe
absence of tape between it vand the roll.
The roll pintles |99 also provide pivotal sup
port for the top guide plate|r9| Vwhich cooperates
with the bottom plate |80 to present an enclosing
Thus in the normalclosed position of :this‘i'mnt
member 5, as shown dotted in Fig. 7,»the `rear
edge of itstape guide portion |10 standsidireotly
in front of or contacts andassists to .supportithe
projecting end of the brush moistener :|5I. :.At
the sides of the tape path this guide» formation» H0
of the front closure `5 further includesiintegral
tape laterally; see also Figs. 3 and 28. ‘Thetcp
chuteifor the tape. Thisrtop plate |9| has up
right and forwardly projecting flanges I92,1|93
edges of these lateral guides |‘H¿|'|2^»areÈ disposed
received between the flanges |81, |88 ofthe bot
upstandingprojections |1I, |12 torßconíining the
Htom platefboth pairs of flanges being apertured
along a similar line of upward 'and `rearward
`in line with the roll axis so as to receive its bear
curvature as the adjacent portions of the side
ing pintles |89.
frames I and 2 .and of the side Lcoverplaterìïaf
These chute-forming guides |90 and |9| have
for-ding a complete 'and "conformingrciosureîfor
the front of the machine as a whore, theztopœover 40 their forward transverse edges substantially ln
vertical line, closely behind the brush and the
l ñtting snugly down onto the top side .portions
presser roll~|9|l, and in such relation to the latter
of front element 5.
that the tape is directed along a tangent to the
As best seen in Fig. 3, also‘F'igs. 27- and 28,:the
underfportion of the roll where it seats on the
guide means |10, |1|, |12 on'the front'closure ä
present an open-top trough-like formation fthe 45 brush. The top plate |9| extends rearwardly over
floor of which terminates‘forwardly infa clown
wardly rounding portion as at |13‘merginginto
the main vertical wall of this lfront element.
This formation facilìtates'the delivery and» seizure
the under plate 480 and has its rear edge |94
deilected upwardly to form with the downturned
lip |8| of the undenplate a.- directive mouth for
the tape immediately in front of the cut-Gif
blades. This mouth or entrance to the guide
of the moist/cried, severed lengths of tape as meas
chute |80, |9| is of considerable Yvertical extent
ured out by the'machine.
at .its receiving end adjacent the blades, so as
The combined closure and delivery element 15
to insureentrance of the leading edge of the tape
is pivotally supported by. means of a‘pair dflin
into the guide chute despite Vany possible varia
wardly extending ears |59 at'its lower xportion,
these being apertured in transverse alignment 55 Ytions'in thevertîcal level of the tapeas it is ad
for bearing reception on pivot lugs ||î9`at the bot
vanced across the fixed blade l I5.
Correct vertical :spacing of the guide plates |80
tom front corners of'the frames I-and :2; lFigs.
and |9I is maintained at their forward portions
25-27. This front door-'like element is Vautorrrat
lcally returned to and normally heldin its closing
by reasonof their Apivotal interconnection at the
position, herein by means of a coil 4spring ~|1r5
having its forward end hooked in an» eye Hain
tegrally formed at the inner face ofthe-closure.
The rear end of this front cover spring 'L15 is
>pintles |89 of the presser roll |90. At their rear
engaged in an aperture in a cross bar-L11 extend
desirably are of a rounded form as seen in».Fig.»21
portions such spacing is determined Vby down
projections or stops |95, |96 at the respective
sides of theunderface of the top plate |90. These
ing between and bolted to opposed lugs |18, »L19 65 to facilitate the lateral guiding and centering of
on the respective side frames I and-2. This cross
the tape, particularly that of maximum width for
bar |11 also serves as a further transversebrace
and interconnection for the front portions ofthe
side frames.
Beyond the severing means the advancing-tape
is directed into contact with the moistener by a
guide and presser unit, seen in Figs. 2, 3, 7 and l1
and separately in Figs. 2l to 23. This comprisesa
bottom plate or floor member lßüextending sub
stantially across between thesldeframesand lon
thegiven machine.
`For manipulating the upper guide plate |9|
and also the described presser-guide unit as 'a
whole, said plate has secured at its upper face Yan
uprightiinger piece |91, which also constitutes Va
weighting element for this entire unit. Bygrasp
ing this finger piece or button |91, »whichdesir
ably is a relatively heavy solid‘metal elementfthe
operatorìmay easily swing the topguide |\9| .for
wardly on its own pivotal support at the presser
roll axis and into a position as shown dotted in
Fig. 23. This exposes the whole interior of the
guide chute between the severing means and the
moistener. If then it is further desired to inspect
the brush and tank, without necessarily remov
mounted to swing on a horizontal axis, an arm
disposed radially of the lever axis and moving
ing them, the entire unit may be lifted and swung
rearwardly about the axis provided by the frame
lugs |84, |85 on which the under plate |80 is
pivoted by its collars |82, |83. This latter axis is 10
the same as that about which the presser-guide
unit as a whole has a yielding vertical movement
for accommodation of the presser roll |90 to the
position of the upper end of the moistening brush,
it being noted in this connection that the entire
feed chute assembly IBB-_|91 pivots vertically on
said ñxed axis, which is located at the rear of the
unit as a Whole and at a, point substantially
feeding members for the tape, an operating lever
with the lever, a gear rotatably carried on said
arm, an arcuate rack fixed on the frame in con
centric relation to the lever axis and in meshing
engagement with said gear, and one-way drive
connections between the gear and the rotary
members, whereby swinging of the operating
lever in one direction rotates the gear and from
it imparts movement to the rotary members.
3. In a tape dispenser, a frame, a shaft thereon,
a feed roll and drive mechanism therefor sup
ported on the shaft, said mechanism including
a crank having an arm portion carrying a gear
rotatable on an axis paralleling the shaft, a
pinion on the shaft meshing with said gear, and
an arcuate rack fixed on the frame concentri
spaced behind the brush and its cooperant presser
cally of the shaft.
roll |90.
4. In a tape dispenser, a frame, a shaft thereon,
Thus the roll is capable cf a substantial range
a. feed roll and drive mechanism therefor sup
of vertical adjustment yet the tape is always in
ported on the shaft, said mechanism including
sured of positive guiding along substantially a
an arcuate rack fast on the frame in concentric
straight line from the severing blades up to and
between the contact areas of the roll and brush 25 relation to the shaft, a crank on the shaft and
rotatably carrying a gear on an axis paralleling
and thence onto the delivery platform |10 of
the shaft, a pinion on the shaft in driven en
the front closure 5. In all operative positions
gagement with the gear, said crank having an
of this unit its top and bottom guides |80, I9i
arm formed with a plurality of shoulders spaced
including their rear mouth have the same fixed
angularly with respect to the shaft, and adjust
relation to the presser roll |90 so as to direct 30
able stop means engageable with said shoulders
the tape along fthe same tangential line to the
selectively, to limit correspondingly the move
under brush-contacting area of the roll.
ment of the feed ro-ll in the feeding direction.
From the disclosure herein it will be evident
5. In a tape dispenser, a frame, a shaft thereon,
that the invention includes as an important as
a feed roll and drive mechanism therefor sup
pect an improved structure and organization
ported on the shaft, said mechanism including
for a moistened tape dispensing machine in its
entirety, with improved cooperative interrela
tion of its integrated mechanisms for measur
ing out and advancing lengths of the tape, for
guiding, moistening and delivering them, and
for cutting off the measured moistened lengths.
an arcuate rack fast on the frame in concentric
relation to the shaft, a crank on the shaft and
rotatably carrying a gear on an axis paralleling
the shaft, a pinion on the shaft in driven en
gagement with the gear, movement of the crank
in one direction serving to rotate the feed roll
In this connection it is noted by way of example
to advance the tape, a substantially radial arm
that the front closure element 5 partakes directly
angularly ñxed relative to the crank. and stop
in the functions of guiding, feeding, moistening
on the frame for engagement by said
and cut-length delivering; and that the fore 45
arm to halt opposite return movement of the
chute and presser moistener roll assembly, itself
importantly functioning in the feeding, guiding
6. In a machine for dispensing gummed tape
and moistening actions, also is novelly correlated
measured moistened lengths, a support for a
with the severing means. The invention further
comprises sub--combinationally the numerous 50 tape supply, rotary members to advance the
tape from the supply, a pivoted hand lever, one
features of novelty presented by the mechanisms
way drive connections between the hand lever
and the rotary members, said lever having a
Claims pertinent to certain features of the
variable-length feed stroke and an opposite re
invention not claimed herein are otherwise
claimed as for example in our divisional appli 55 turn stroke, a main return spring for the hand
lever, said main spring arranged to be increas
cation Serial No. 526,582.
tensioned through the total length range
Our invention is not limited to the particular
of the hand lever feed stroke, and auxiliary
embodiment as herein illustrated or described,
spring means coacting with the lever and main
its scope being set out in the following claims.
spring to supplement the latter in response to
We claim:
relatively short feed strokes and partially to
l. In a tape dispenser, a frame, a shaft thereon.
counteract the main spring following longer
a feed roll and drive mechanism therefor sup
feed strokes.
ported on the shaft, said mechanism including
7. In a machine for dispensing gummed tape in
pawl and ratchet elements, one fast with the
moistened lengths, a support for a tape
feed roll. and the other rotatable separately
supply, rotary members to feed the tape from the
therefrom in o-ne direction, a toothed pinion, a
supply, a pivoted hand lever, one-way drive con
coupler between the pinion and said other of
between the rotary members and the
the pawl and ratchet elements, a, crank having a
hand lever affording the latter a feed movement
bearing formation, and an operating lever hav
ing a supporting hub and interengaging lug and 70 and an opposite return movement, a main return
spring for the hand lever, and compensating
groove formations connecting the crank , and
lever hub for movement in unison, said parts
adapted for removable assembly on said shaft.
2. In a tape dispenser, a frame providing sup
port for a tape supply, rotary measuring and
auxiliary return means comprising a radial arm
moving with the lever. a spring-guiding plunger
having one end pivoted to said arm, a guide slid
ably receiving the other end portion of the plung
er, said guide mounted to turn about a fixed pivot
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