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Патент USA US2049537

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Aug. 4, 1936.
`
H. P. ELLIOTT
2,049,537
STENCIL MOISTENING MACHINE AND STENCIL THEREFOR -
Filed oct. 5", 1954
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STENCIL MOISTENING MACHINE AND STENCIL THEREFOR
Filed Oct. 5, >1954
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Àug. 4, 1936.
H. P, ELLIOTT
" 2,049,537
STENCIL MOISTENING MACHINE AND STENCIL THEREFOR
Filed Oct. 5, 1954
/214
3 Sheets-Sheet 5
/26
/
Patented Aug. 4, 1936
2,049,537
UNITED STATES
»f
‘
PATENT OFFICE
2,049,537
sTENcIL MoIs'rENING MACHINE AND `
s'rENolL THEREFOR
Barnim P. Elliott. Watertown, Mass.
Application October 5, 1934, Serial No. 747,023
31 Claims. (Cl. 91-54)
'I‘his invention relates to a machine for mois
-tening stencils and especially stencils that are
used in connection with addressing machines.
A stencil that is used with addressing ma
chines comprises a stiif rectangular frame, usual
ly of paper, having a window'therein which is
traversed by a stencil sheet that is adapted to
bear the address or other printing data. 'I'he
stencil sheet is usually composed of yoshino
10 paper or other porous ink permeable material
and is covered at least on one side with an ink
impervious coating that is adapted to be mois
tened to render it soft so that the coating can be
cut or broken by the type characters of a type
writing machine or the like in forming the ad
dress or the like on the stencil so as to permit
ink to be forced through the stencil sheet at the
cut-away‘portions of the coating.
A stencil moistening machine constructed in
accordance with my invention is arranged to
advance successive stencils from a pile of sten
cils into and out of moistening position, in which
moistening position the opposite surfaces of the
stencil sheet are forcibly engaged by a moist
belt, a portion of which dips into» a water con
taining receptacle.
lower passes of an endless water absorbent belt
that is intermittently rotated through the water
in a receptacle, that portion of the belt in the 10
receptacle passing under >an adjustable belt
tightener that keeps the belt taut. Itis a. further
object of the invention to so arrange the belt
tightenel` that the support and clamping means
therefor are above the water in the receptacle 15
so that these parts are not liable to rust.
A further object of the invention is to pro
vide a construction whereby the water receptacle
can be removed readily from the machine upon
the withdrawal of the belt tightener.
20
A yet further object of the invention is the
provision of rotatable means for compressing
the upper and lower passes of the belt against
the opposite faces of a stencil disposed therebe
tween and also for advancing the belt intermit 25
tently.
^ A successful stencil moistening machine in
volves the satisfactory solution of a number of
problems peculiar to the machine and occa
sioned to a considerable extent by the necessary
use of water in the machine. The stencils are
adapted to be fed in successive order from the
bottom of a vertical stack of stencils. If the
lowermost stencils are successively advanced
from the stack by a reciprocating pusher that is
slidable in guide-ways, as is customary in ad
dressing machines, the sliding parts are apt to
rust and cause the pusher to bind or at least to
hinder its free operation.
pusher that comprises an operating shaft adapt
ed to be continuously rotated, the shaft having
a wabble plate or cam plate angularly iìxed there
to that engages the reciprocating pusher, the
plate being so shaped as to eñect the reciproca 5
tion of the pusher in the desired manner.
The stencil is advanced between upper and
Hence an object of
The thickness of different belts vary somewhat
and ai. belt often becomes thinner after con
tinued service. Hence anotherobject of the in
vention is the provision of automatic meansvfor 30
compensating for the diiîerent thicknesses of
wicks so that the compression pressure of the
Wicks on the stencils will be approximately the
same regardless of a variable thickness of wick.
Preferably said means is adjustable so that the 35
pressure can be varied at will.
'
A further object of the invention is a construc
tion of a stencil moistening machine so arranged
that the wicks can be removed from and re
the present invention is the provision in a stencil
placed in the machine readily.
moistening machine of a pusher that is free from
sliding or rubbing parts and comprises a pivoted
A stencil moistening machine is operated in
conjunction with a typewriting machine. 'I'he
moistening machine is operated to deliver a prop
reciprocating frame that engages the successive
lowermost stencils and advances them to the
The frame also is so ar
ranged that in its advancing movement it raises
El moistening position.
the stack so as to remove the weight of the stack
from the advancing stencil and thereby permit
it to advance freely.
The stencilmoistening machine is usually op
erated by a girl and hence the mechanism should
have no exposed moving parts in which a sleeve
or other part of the dress of the operative may
be caught. Hence a further object of the in.
vention is in‘ reciprocating mechanism for the
-
40
erly softened stencil and advance a stencil into
moistening position. The operative takes the 45
softened stencil and places it in the typewriting
machine and types the address thereon While the
second stencil is being softened. It is important,
for speedy work that the moistened stencils be de
livered properly, that is to say, top edge foremost 50
and front face upward, so that the operative can
position them in the typewriting machine with
out having to turn the stencil over.
Hence a further object of the invention is the
provision of a stencil moistening machine having 55
2,049,537
2
stencil advancing means in combination with a
series of stencils, both so arranged that stencils
can be delivered only when the stencils are posi
tioned properly in the machine.
'
A specific object is a stencil having a notch in
secured thereto by shoulder screws 36, said screws
also securing soft rubber discs 88 to said plates,
which discs form the supports or feet for the ma
chine.
An anvil carrying plate 40 having a width that 5
one edge thereof and a pusher having pusher
feet of different lengths and so arranged that,
when the notch confronts the proper one of the
pusher` feet, the stencil will be advanced but not
10 when the notch is- otherwise disposed.
An additional object of the inwention is the
provision of a stencil moistening machine that is
cheap in construction and reliable in operation.
Fig. 1 is a front elevation of a stencil moisten
ing machine embodying the present invention.
Fig. 2 is a plan view of the machine of Fig. 1.
Fig. 3 is a sectional view taken along line 3-3
of Fig. 2.
Fig. 4 is a sectional view taken along line 4-4
‘
20 of Fig. 1.
Fig. 5 is a sectional detail of the locking means
for vthe belt tightener taken along line 5-5 of
Fig. 1.
'
Fig. 6 is 'a sectional detail taken along line 6-6
25 of Fig. 1.
Fig. 'I is a plan view of the platen or presser
arm.
Fig. 8 is a sectional detail of the stencil holder
and pusher taken along line 8--8 of Fig. 4.
30
Fig. 9 is a side elevation of the stencil holder
and its supporting bracket, looking in the direc
tion of the arrows 9-9 of Fig. 8.
Fig. 10 is a detail of the stencil fholder and
pusher illustrating the manner in which the push
er supports the stack of stencils in elevated posi
tion while supporting the lower stencil.
Fig. 11 is a perspective detail of the belt tight
ener.
40
Fig. 12 is a sectional detail of a stencil adapted
for use in connection with the machine of the
present invention.
Fig. 13 is a perspective detail of the pusher.
Fig. 14 is a plan detail of the stencil track and
pusher illustrating the relation between the push
er and a properly positioned stencil.
Fig. 15 is a view similar to Fig. 14 and illustrat
ing the action of the pusher on an improperly
positioned stencil.
~
Fig. 16 is an end view of Fig. 15.
Fig. 17 is a perspective detail oi' a modification
of the stencil holder and pusher wherein the
pusher is provided with toes of equal length.
The stencil moistening machine of the present
invention is adapted to moisten the stencil sheets
of stencils I6 constructed generally as illustrated
55
in Fig. 12. The stencil is provided with a stift
rectangular frame i8 bounding a window 20
`-which is traversed by a stencil sheet 22 composed
of yoshino paper or other ink permeable material
and having at least on one face thereof an ink
impervious coating, not shown, that is adapted to
be softened by moistening with water so that it
is yielding enough to be cut through by the char
acters of a typewriting machine or the like to
form
the stencil characters.
65
The stencil moistening machine comprises a
pair of horizontally spaced vertical side plates 24
and 26 connected in spaced relation in the middle
portions thereof by a spacing rod 28, see Figs. 1
and 3, secured in position by screws 30 which pass
through said plates and are screw-threaded in
the ends of said rod. The side plates at the
bottoms thereof have outstanding ears 32 and
the plates are additionally secured together by
75 cross plates 34 which underlie said ears and are
approximates the width of the space between said
side plates is disposed between said plates at the
top thereof and is secured removably thereto by
removable pins 42 and 44 which pass through sets
oi’ spaced ears 46 at the opposite ends of said plate 10
and through corresponding ears 48 of the side
plates. The pins are .removably retained in the
ears 48 as by providing the pins with bifurcated
ends 56, see Fig. 6, so that the ends are a push fit _
in one of the side plates, whereby the anvil carry
ing plate can be removed readily to gain access
to the belt. Belt supporting rolls 52 and 54 are
loosely journaled on the ~pins 42 and 44 between
the sets of ears 46.
A platen arm 56, see especially Figs. 1, 3, and 7, 20
is located beneath the anvil carrying plate and at
one end is provided with a pair of horizontally
spaced ears 58 through which a pivot rod 60 is
extended, the rod being secured to the platen arm
by a set screw 62, see Fig. '1, and Ybeing loosely 25
journaled in and readily removable from the side
plates 24 and 26. The platen at the end opposite
its pivotal support, is provided with a belt guide
63.
'
The platen is reciprocated by operating mech- 30
anism that includes a rotatable shaft 64 jour
naled in both side plates 24 and 26 and while at
the front end of the machine is provided with a
crank handle 66. A drum 68 is fixed to said shaft
between the side plates and is provided with 35
front and rear outstanding flanges 10 and 12
respectively. The platen arm 56 is provided with
a depending ear 14 carrying a roller 'I6 that rides
upon the flange 12. Said ñange is provided with
a raised or cam portion 18 that is adapted to ele
40
vate thev platen to bring the belt into engagement
with a stencil, as will be 'described hereinafter.
An endless absorbent belt 80, preferably a
woven fabric belt, approximately as wide as the
stencil sheet 22 of the stencil, is passed about the
idler rolls 52 and 54 and under the anvil carry
ing plate 40 and over the platen arm 56 between
which platen 40 and arm 56 the upper and lower
passes 80a and 80h of the belt are close together
and receive between them the successive stencils.
A part of the belt loops into a water contain
ing receptacle 82 disposed between the side plates
24 and‘26 and having its front end resting upon
one ofthe plates 34 and its rear end resting -upon
separate shelves 84 of the side plates. The re- 55
ceptacle is not secured positively in the aforesaid
relation and is readily removable when desired
after raising the receptacle above the low retain- '
ing ledges 85.
l
'
The loop of the belt that is disposed within the
receptacle passes around a semi-cylindrical lat
eral extension 86 of a belt tightener arm 88, the
upper end of which is located above the recep
tacle and has a laterally projecting pin 88 that is
pivotally received in- the side plate 26. The arm
88 is also providedvwith a sector 92 that confronts
the inner face of said side plate and has an elon
gated slot 84 therein through which a bolt 96», see
especially Fig. 5, passes, the bolt being carried by
the side plate 26 `and so arranged as to clamp the 70
sector against the side plate by the wing nut 98,
whereby to secure the arm in any adjusted posi
tion and maintain the belt taut.
The belt passes between the aforesaid drum 68
and a cooperating platen roll or drum |80 which 75
3
is disposed between the side plates 24 and 26 in
the horizontal plane of the drum 64 and is carried
by a shaft |02, the ends of which are loosely jour
naled in horizontal slots |04 of said side plates,
journaled in ears |34 of the side plate 24. The
entrances |06 which permit the removal of the
shaft with its roll from the space between the
frame at the upper end is provided with a pair of
the other ends of which are fixed -to the side
pusher feet |36 and |31 having toe portions |38
and |39 respectively that are adapted to engage
the rear edge of the lowermost stencil only of the
pile and advance it forwardly along the track as 10
the pusher frame is moved forwardly toward the
side plate 24. ’I'he pusher frame is so disposed
with respect to the stencil track, being pivoted
about in the line of the vertical axis of the stack,
that the pusher feet, and especially the heel por
plates. The arrangement is such that the
tions |40, rise as they pass across the bottom of
toward the drum 64 by a pair of levers |08, each
pivoted on a screw I |0 removably screw-threaded
-in the separate side plates above the slots |04.
Said levers extend downwardly over the outer
faces of the side plates and the lower ends are
connected to similar ends of tension springs |I2,
springs through the leverage provided by the
_the stencil holder and thereby raise the pile of
levers |06 exert substantial pressure on the roll
stencils in the holder in the manner illustrated in
|00 tending to urge it constantly toward.. the
Fig. 10, whereby to remove the weight of the pile
20 cooperating drum 64.
The drum and roll are
geared together by intermeshing gears ||4 and
H6, the length of the teeth of which is such that
the drum and roll are in constant engagement
irrespective of displacement of the roll.
The drum and roll are caused to advance the
belt intermittently and to this end the drum 64 is
provided with a raised arcuate portion ||8 that
at times pinches the belt between it and the roll
|00, thereby effecting the advance of the belt.
30 The length of said arcuate portion is such as to
cause it to advance the belt by an amount suiii
cient to present a fresh portion of the belt to each
of the successive stencils. The diameter of the
drum 64 at the raised portion I |8 is substantially
equal to the diameter of the roll- |00 so that the
belt is caused to advance without objectionable
slipping on the drum and roll. The remaining
peripheral portion of the drum 64 is of reduced
diameter so that when such portion confronts
40 the roll |00 the drum is free from driving engage
ment with the belt, the roll being restrained from
movement into engagement with the low part of
the drum 64 by engagement of its supporting
of stencils from the lowermost advancing stencil. 20
'I'he pusher feet are disposed inline with the side
members of. the holder cliannels |24 and said
members at the bottom edges thereof are provided
with recesses |42, see especially Figs. 8 and 10, in
which said pusher feet are adapted to operate. A 25
~heavy plate |44 rests freely upon the top of the
pile of stencils to insure positive delivery of
stencils especially at times when there are but a
few stencils in the holder and said plate is pro
vided with channels |46 in its lower face in'which 30
said pusher feet are adapted to reciprocate when
said plate is close thereto.
Each forward stroke of the pusher frame moves
.a stencil from the holder into position between
the upper and lower passes 80a and 80h of the 35
belt and on the succeeding operation of the pusher
the moistened stencil is advanced by the next ad
vancing stencil out of moistening position and
upon -an inclined delivery plate |48 secured to the
front ends of the stencil rails and upon which the 40
.moistened stencil is delivered into a position con
venient for removal by an operative.
The pusher is reciprocated by a wabble plate or
shaft |02 with the bottoms of the recesses |04.
cam disc |50 which is fixed to the operating shaft
means that express surplus water from the belt,
the excess water falling into the tank 32 which is
64 at an inclination with respect to the diameter 45
thereof so that as said shaft is rotated the top
portion of the plate, that is to say, the successive
portions of the plate that are successively on top
as the plate is rotated, is caused to move back
45 The drum 64 and roll |00 also constitute wringing
disposed under the engaging portions of the drum
and roll.
50
The stencils to be moistened are adapted to be
contained in a vertical pile in a holder carried by
the rear side plate 24 and the successive lower
most stencils of the pile are adapted to be ad
vanced forwardly horizontally into the space be
tween the upper and lower passes 80a and 60h
respectively of the belt. The stencils arel sup
ported in their advancing movement on a pair of
rails |20 that overlie and are supported upon
rearwardly extended brackets |22 of the side Wall
60
24 and extend forwardly toward and beyond the
front side plate 26 and under and close to the top
pass 80a of the belt, the rails having confronting
guide grooves |23 for the stencils.
The stencil holder comprises a pair of vertical
65 channel members |24 resting upon the rails |20
l over the brackets I 22 and secured to said rails
75
vertical arms |30 that are fixed at their lower ends
to a cross shaft |32, see especially Fig. 4, that is
see especially Figs. 1 and 3, the slots having side
side plates. The roll |00 is constantly vurged
55
The stencils are advanced in successive order
from the holder by a pusher frame |23 having
wardly and forwardly. The pusher frame is pro
50
vided with a horizontal Across bar |52 having a cam
folîower |54 swiveled therein and provided with a
slot |56 in which the periphery of the wabble plate
is loosely located so that the plate causes the
pusher to reciprocate as the plate is rotated. The 55
peripheral edge of the plate is so shaped that the
side faces thereof are parallel with the sides of
the slot |56 in any displaced position of the
pusher.
The belts 00 vary somewhat in thickness and a 60
belt that has been used for some time is thinner
than a new belt.
Hence means are provided to
compensate for the varying thicknesses of the
belts.
Said means consists in an> anvil |58 that is
independent of 'the anvil plate 40 and is disposed 65
under said plate and over the top pass of the belt
and is connected loosely to said plate by screws
|60, the heads of which are located above the
and brackets by screws |26. The lowermost sten
cil of the pile normally rests in the track pro
vided by the rails |20 and the front sides |24a of
the holder channels have their lower edges ter
minated just above the top of the lowermost sten
cil so that the front sides retain all except the
the plate 40 by the screw |64 bears upon the heads 70
of the screws |60 and thus urges the anvil plate
toward the platen, the amount of movement of
lowermost stencil against advancing movement
as the lowermost stencil is pushed forwardly
heads of the screws |60.
along the rails.
the platen 65 is thus taken by the spring |62 so
«~
l
plate. A fiat spring |62 pivotally connected with
the anvil plate being limited, however, by the
The pressure exerted by
2,049,587
4
that the pressure can be made substantially con the holder with its notched edge not in line with
stant regardless of variations in belt thickness. the long toe, the stencil will rest upon the long
toe and either the stencil will be held above the
The pressure can be adjusted by varying the set
tings of the screws |80 and also by substituting short toe, so that the pusher will reciprocate
different spring plates |32 of different resiliencies. without engaging the stencil or, usually. the s
stencil will cant and while the short toe may
The operation of the machine'is simple.
The platen 56 is in its lowermost position at the engage the stencil it will cramp it in the track
time the pusher frame reciprocates forwardly to as has been explained above, or the stencil will
advance a stencil into position between the anvil
be caught between the long toe and the bottom
and platen and the upper and lower passes of the
edge of the front side |244 of the stencil holder 1o
belt. Continued rotary movement of the oper
channel |24, so that the stencil will be held from
advance. With this arrangement the operative is
careful to position the stencils -properly in the
ating shaft 64 causes the platen to be elevated
to press the passes of the moist belt against the
- opposite faces of the stencil sheet of the stencil.
15 Further rotation of the shaft causes the lowering
of the platen and the pinching of the belt between
the high portion ill of the drum il and the drum
|00 thereby advancing the belt and presenting
fresh moist surfaces for the next stencil. The
20 pusher also advances during a part of the advanc
ing movement of the belt and delivers a second
stencil into moistening position, at the same time
pushing the moistened stencil out- of moistening
position and upwardly along the plate Il.. The
25 action is repeated for each stencil.
The moistening machine is'usually positioned
beside the typewriting machine 4with which the
operative writes the addresses in the softened
stencils and the manner of operating usually is to
30 remove a moistened stencil from the moistening
machine and cut the address while a succeeding
stencil ls being softened between the belt of theV
moistening machine.
'
For speedy work in addressing the stencils it
35 ls desirable that the moistened stencil be deliv
ered on the delivery plate |48 in such position
that it can be removed and placed in the type
writing machine with the minimum of manipula
tion. Since the stencil is positioned in the type
40 writing machine front face forward and top edge
up it is desirable that the stencils be deposited
upon the delivery plate of the moistening machine
front face up and top edge forward as in this
disposition, they can be picked up and trans
45 ferred to the typewriting machine without
changing the grasp of the fingers on the stencil.
Hence the stancils and the moistening machine
are so arranged that the stencils will be ad-'
vanced from the holder only when the stencils
50 are properly positioned in the holder, that is to
say, when they are all face up and top edge for
ward in the holder. To this end the bottom edge
|56, see -Figs. 12, 14 and 15, of each stencil is
formed with a notch |68 therein in that part
55 confronting and adapted to be engaged with one
of the feet of the pusher. The pusher feet,
furthermore, are made of unequal length, the
pusher toe |39 being longer than the othertoe
ISS-by the depth of the notch |68. With this
arrangement when the notch confronts the long
toe, both toes will engage the edge of the stencil
at the same time and hold it square with the
stencil track so that it can be advanced along the
track.I When, however, a stencil is reversed in
65 position, so that the notch does not register with
the long toe, the long toe engages the stencil first,
' if the 4pusher adjustment is such that the long
toe clears the edge of the stencil in its complete
retracted position, and on advancing the stencil,
70 cramps it in the track, as illustrated in Fig. 15,
so that it can not advance. The preferred ad
justment of the pusher is such that the toes just
clear the rear or bottom edges of the stencils
when they are properly positioned in the holder.
Hence when a stencil is improperly positioned in
holder so that they can be delivered in position
for speedly addressing.
If the notch in the 15
stencil is eliminated and the pusher toes are of
equal length, such as the toes Ilia and lila of
Fig. 17, the mechanism will advance stencils in
either obverse or reverse positions.
I claim:
20
1. A stencil moistening machine comprising
stencil guiding and supporting means, a water
absorbent belt, means to press the belt and the
successive stencils into engagement, and belt ad
vancing mechanism including a rotary shaft, belt 25
engaging drums at least one of which is rotated
by said shaft, and means _for effecting intermit
tent driving engagement between said belt and
said drums.
’
2. A stencil moistening machine comprising 30
stencil guiding and -supporting means, a water
absorbent belt, means to press the belt and the
successive stencils into engagement, and belt
advancing mechanism including a rotary shaft,
belt engaging drums at least one of which is 35
rotated by said shaft, and means for effecting
intermittent driving engagement between said
belt and said drumsksaid means including raised
and depressed portions on one of said drums.
3. A stencil moistening machine comprising 40
stencil guiding and supporting means, a water
absorbent belt, means for pressing said belt and
successive stencils in engagement, belt advancing
mechanism including cooperating driving drums
between _which said belt is located, one of said 4r
drums having a raised belt-driving section, means
for urging one of said drums towards the other,
and means for rotating one of said dnuns.
4. A stencil moistening device comprising
guidingand supporting means for the stencils, a 50
water absorbent belt, means for pressing said
belt and successive stencils into engagement,
and means _for advancing said belt in an intermit
tent manner comprising a rotatable driving drum
having
a
peripherally-raised
driving ‘ section
adapted for intermittent engagement with said
belt, an idler roll supporting said belt, spring
means for urging said idler roll toward said driv
ing drum, and means for limiting the movement
of said idler roll toward said driving drum.
60
5. A stencil moistening machine comprising
stencil guiding and supporting means, a water
absorbent belt, means to press said beit and suc
cessive stencils into engagement, and driving
mechanism for said belt comprising a pair of g5
side frames, a shaft journaled in said side frames,
a driving drum fixed to said shaft between said
side frames and having a raised belt driving sec
tor, an idler drum cooperating with said driving
drum located between said side plates and hav- 70
ing a shaft received removably in open ended
slots in said side plates, and spring means re
‘taining said shaft in said slots and urging said
idler drum toward said driving drum.
'
6. A stencil moistening machine comprising 75
2,049,587
.
.,
,
' 5
stencil guiding and supporting means, a water ' vsuccessive stencils
engagement, means for-4> .i »
absorbent belt, means to press- said `beltanci suc y _advancing saidv belt'intermittently, means for ad- .
cessive stencils intov engagement, and driving vvancing successive stencils along said guiding and
supporting means including a vertical pusher
framev having a pivotal support for its lower end, 5
mechanism for said belt comprising a pair of side
frames, a shaft journaled in said side frames, a
driving drum iixed to said shaft between said
side frames and having a raised belt driving
sector, an idler drum cooperating with said driv
ing drum located between said side plates and
having a shaft received removablyin open ended
slots in said side plates, and spring means re
taining said shaft in said slots and urging said
idler drum toward said driving drum, said spring
means comprising levers pivoted to said side
plates and bearing against said shaft and springs
stencil guiding and supporting means, a water
absorbent belt, means for pressing said belt and
successive stencils into engagement, means for
advancing‘said belt intermittently, means `for 15
acting on said levers in a direction to urge said
advancing successive stencils along said guiding
shaft and said idler roll toward said driving drum.
7. A stencil moistening machine comprising
stencil guiding and supporting means, a water
frame having a pivotal support for its lower end,
and operating mechanism for reciprocating said
20 absorbent belt, means to press said belt and suc
cessive stencils together, means to advance said
belt intermittently, and means to advance suc
cessive stencils along said guiding and supporting
means comprising a vertical frame, pivotal sup
25 porting means for the lower end of said frame,
said frame at its upper end having stencil engag
ing and moving means, and mechanism for re
ciprocating said frame.
8. A stencil moistening machine comprising a
30 stencil track, a water absorbent belt, means to
press said belt and successive stencils into en
gagement, mechanism for advancing said belt in
termittently, a stencil holder adapted to contain
a vertical pile of stencils above said track at one
end thereof, and mechanism for advancing the
successive lowermost stencils of said holder along
said track to the engagement of said belt com
prising a vertical reciprocating pusher frame lo
cated below said holder, pivotal supporting
40 means for the lower end of said frame, the upper
end of said frame having pusher feet provided
with toes engageable with the successive lower
most stencils only of the holder, said pusher being
so arranged that said feet rise in traversing the
45 holder to advance the lowermost stencil therein
so as to pass under and elevate the stack of sten
cils above the advancing stencil, and means for
reciprocating said frame.
9. A stencil moistening machine comprising
50 guiding rails constituting a stencil track, a water
absorbent belt, means for pressing said belt and
successive stencils into engagement, means for
advancing said belt intermittently, a stencil
„ holder located above said track at one end thereof
adapted to contain a vertical pile of stencils, said
holder comprising a pair of vertical confronting
channel members between which the pile of sten
cils is located, means for advancing the successive
lowermost stencil of said holder along said track
comprising a vertical pusher frame located below
said holder, pivotal supporting means for the
lower end of said frame, said frame at its upper
end having pusher feet which are reciprocable
between said rails, said feet having toes which
are engageable with the successive lowermost
stencils only of said holder, and heels which pass
under and support said stencil stack out of con
tact with the advancing stencil, the side members
70 of said holder channels having slots at the bot
toms thereof in which said heels can operate,
and means for reciprocating said frame.
l0. A stencil moistening machine comprising
stencil guiding and supporting means, a water
absorbent belt, means for pressing said belt and
and operating mechanism for reciprocating said
frame comprising a rotatable shaft, a wabble
plate fixed to said shaft, and means operatively
connecting said wabble plate and said pusher
frame.
.
10
ll. A stencil moistening machine comprising
and supporting means including a vertical pusher
frame comprising a rotatable shaft, a wabble 20
plate fixed to said shaft, and means operatively
connecting said wabble plate and said pusher
frame, comprising a block rotatable in said frame
having a slot therein in which the periphery of
25
said wabble plate is located.
12. A stencil moistening machine comprising a
stencil track, a stationary anvil located above said
track, a reciprocating platen located below said
track, an endless water absorbent belt having
upper and lower passes respectively above and be 30
low said track and between said anvil and platen,
means for advancing said belt intermittently,
means for reciprocating said platen to press the
passes of said belt against successive stencils in
said track, and means for advancing stencils in 35
a successive manner along said track to the en
gagement of said belt.
13. A stencil moistening machine comprising a
stencil track, a stationary anvil disposed above
said track, a reciprocable platen disposed below 40
said anvil and track, an endless water absorbent
belt having upper and lower passes disposed re
spectively above and below said track and be
tween said anvil and platen, means for advancing
successive stencils along said track into and out
of position between said belt passes, means for
advancing said belt intermittently, and means
for reciprocating said platen to press the passes
of said belt against successive stencils, said re
ciprocating means comprising a rotatable operat- 5
ing shaft disposed beneath said platen and hav
ing a cam thereon, and a cam follower carried by
said platen and coacting with said cam.
14. A stencil moistening machine comprising
a stencil track, a stationary anvil located above 55
said track, a reciprocating platen located beneath
said track, an endless belt having upper and lower
passes disposed respectively above and below said
track between- said anvil and platen, means for
advancing said belt intermittently comprising an 60
operating shaft, a drum rotatable therewith hav
ing a raised portion constituting a belt engaging
and driving face, an idler roll between which and
said drum said belt is pinched, and reciprocating 65.
means for said platen comprising a cam flange
forming a. part of said drum, and a cam follower
carried by said platen and riding upon said
flange.
r
l5. A stencil moistening machine comprising 70
a stencil track, a stationary anvil disposed above
said track, a reciprocating platen disposed below
said track, an endless belt having upper and low
er passes on opposite sides of said track between
said anvil and platen, means for advancing said 75
6
2,049,587
prising a pivoted frame having a free end mov
able in the line of movement of the stencil, said
free end having a pair of- stencil-engaging toes
positioned to engage an edge of the stencil near
the corners thereof.
belt intermittently comprising a continuously ro
tatable operating shaft, a driving drum rotatable
therewith having a raised peripheral portion en
gageable with said belt, an idler roll betweenI
which and said raised portion said belt is pinched,
23. Stencil advancing mechanism comprising a
stencil support, and a stencil pusher for advanc
ing the stencil on said support, said pusher com
prising an arm disposed mainly below the stencil,
means providing a pivotal support for the lower
end of said arm, the upper end of said arm
having a pusher foot provided with a stencil
means operated by said shaft for reciprocating
said platen, a pivoted pusher for advancing suc
cessive stencils along said track, and means for
reciprocating said pusher comprising a wabble
10 plate rotatable with said shaft and having`- an op
erative connection with said pusher.
16. A stencil moistening machine comprising
engaging toe.
a stencil track, means for advancing successive
stencils along said track, an endless water ab
holder for a vertical stack of stencils, and a
15 sorbent belt, means for pressing said belt and
stencil pusher for advancing the successive lower
most stencils laterally of said stack, said pusher
comprising a vertical arm disposed mainly below
said holder and having at its upper end a pusher
successive stencils together, means for advancing
said belt intermittently, a water receptacle in
which a loop of said belt is disposed, a belt tight
ener dependent within said receptacle and bear
foot provided with a heel and a toe adapted 20
to engage the edge of the lowermost stencil in
20 ing against said belt, and pivotal supporting and
clamping means for said belt tightener located
exteriorly of said water receptacle.
17. A stencil moistening machine comprising
a pair of horizontally spaced vertical side plates,
25 a stencil track traversing the space between said
plates, an anvil plate located in the space between
said plates above said track, pins removably en
gaged with said side plates and the ends of said
anvil plate, rollers on said pins, an endless belt
30 having an upper pass extended over said rollers
the holder, pivotal supporting means for the
lower end of said arm so disposed with respect
to said holder that the swinging movement of
said arms in advancing a stencil causes said 25
foot to rise under said holder whereby to elevate
the pile of stencils above the advancing stencil.
25. Stencil advancing mechanism comprising a
holder for a vertical stack of stencils, and a
~ stencil pusher for advancing the successive low- 30
ermost stencils laterally oi.' the stack, said pusher
under said plate and above said track, means for
pressing said belt and successive stencils into en
gagement, and means for advancing said belt in
termittently.
35
'
comprising a pivoted arm having a swinging
upper end that rises as it passes under the stack
in engagement with the lowermost stencil and
raises the pile on the advancing stencil.
35
26. A stencil moistening machine comprising
stencil guiding and supporting means, a water
absorbent belt, means to press the belt and the
successive stencils into engagement, and stencil
advancing means comprising a pusher `member 40
having a pair of toes adapted to engage an edge
of a stencil, one oi said toes being longer than
l
18. A stencil moistening machine comprising
a pair of horizontally spaced vertical side plates,
a stencil track which traverses the space between
said plates, an anvil plate located between said
side plates above said track, a presser arm dis
4.0 posed between said plates under said track and
said anvil plate and having a pivotal connection
at one end with said plates, an endless water ab
sorbent belt having upper and lower passes dis
said other toe.
27. A stencil moistening machine comprising
stencil guiding and supporting means, a water 45
absorbent belt, means to press the belt and the
successive stencils into engagement, stencil ad
vancing means comprising a pusher member hav
ing a pair oi’ toes adapted to engage an edge
of a stencil, one ot»V said toes being longer than 50
said other toe, and a stencil adapted for coop
eration with said pusher having a notch in one
edge that is adapted to receive said long toe.
28. A stencil moistening machine comprising
a stencil support, a water absorbent belt, means 55
to press the belt and successive stencils into
engagement, a pusher for advancing a stencil
on said support to said belt having a pair of
stencil engaging toes engageable with an edge
of the stencil, one of said toes being longer than
the other toe, and a stencil cooperating with said
pusher having a notch in the pusher-engaging
edge thereof that confronts said long toe.
29. The combination of a stencil having a notch
'in a pusher-engaging edge thereof, and a stencil 65
moistening machine having moistening means
posed respectively above and below said track and
45 between said anvil plate and platen arm, means
for reciprocating said platen to press said belt
passes and successive stencils together, means
for advancing said belt intermittently, and means
for advancing successive stencils along said
50
track.
`
. ‘
- 24. Stencil advancing mechanism comprising a
`
19. A stencil moistening machine comprising
stencil guiding and supporting means, an endless
water absorbent belt, means including a fiat an
vil and platen to press said belt and successive
55 stencils together, and means to exert a substan
tially constant pressure between said belt and
stencils over the area o! said anvil and platen
irrespective of the thickness of said belt.
'20. A stencil moistening machine comprising
60 a stencil track, an anvil located above said track,
a platen located below said track, an endless belt
traversing said track, means to reciprocate said
platen to press said belt and successive stencils
together upon said anvil, and means to exert a
65 substantially constant pressure between said belt
and successive stencils, irrespective of variations
in thickness of said belt, comprising a spring sup ‘ and a pusher for advancing the stencil to the
action of said moistening means, said pusher hav
port for said anvil.
21. A stencil moistening machine as defined ing a pair of toes engageable with the pusher
engaging edge of the stencil, one of said toes 70
70 in claim 20 wherein said spring support for said being longer than the other by-approximately
anvil has means for adjusting the spring tension.
the depth of said notch and positioned to enter
,
22. Stencil advancing mechanism comprising said notch.
30. The combination of a stencil- and astencil
a stencil support, and a stencil pusher for mov
moistening machine, said stencil having top and u
75 ing the stencil over said support, said pusher com
thereon.
`
Y
2,049,537
bottom edges and a notch in its bottom edge,
said machine having stencil supporting and guid
ing means on which the ñat face of the stencil
is adapted to resa-means for moistening the
stencil, and means for advancing the stencilv to
said moistening means, said advancing means
comprising a pusher having a pair of stencil
engaging toes adapted to engage the notched
edge of said stencil, one of said toes being longer
than said other toe by approximately the depth
of said notch and said notch being positioned in
the edge of said stencil to receive said long toe
- '
7
when said stencil is properly positioned on said
guiding and supporting means.
31. The combination of a stencil and a stencil
pusher for advancing the stencil, both having
cooperating parts that register to eiîect the ad
vance of the stencil when the stencil is in ob
verse position but are out of register and prevent
the advance of an inverted stencil, said cooper
ating parts comprising a notch in the stencil and
a projection of the pusher adapted to enter said- 10
notch.
»
HARMON P. ELLIOTT.
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