July 11, 1950
2,514,567
B. G. DAGGETT
APPARATUS FOR CUTTING TEETH IN HAND SAWS
Filed May 14, 1947
2 Shee'ts-Sheet 1
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INVENTOR.
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BY
QTTOENEV
July 11, 1950‘
B. G. DAGGETT
2,514,567
APPARATUS FOR CUTTING TEETH IN HAND sAws
Filed May 14, 1947
'
Z-Sheets-Sheet 2
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INVEN TOR.
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Patented July 11, 1950
2,514,567
UNITED “STATES
10F F I CE
(2,514,567
IABPAR‘ATU'ST FOR CUTTINGlTEETHlN
‘HAND SAWS
v‘Byron GJDaggett, San Diego,‘Calif.
."ApplicationMaylri, 1947,..SerialNo. 742907
l'5'Claims. (Cl.'76—.29)
My invention relates ‘to apparatus ‘for; cutting
Firmly attached to the plate [3 by any suitable
teeth in hand saws, and .itsobiectsi-‘are'to cut ta
new set of teeth in handisaws both new-'and-those
means are therails l5, l6 and ll of the-track l8.
'Slidablymounted ‘.upon'rthetrack vl8 is the car
which have ‘already-been used and in which the
teeth have become damaged or defective; to
change in such- cutting if “desired the/spacing :of
riage l9, comprising-thel?at longitudinal-member
'29,.‘ having integralztherewith- the laterally extend
ingarms 2 I , 22. and zsgthetends ‘of which'are re
the teeth so as to meet thefrequirementsrof the
mechanic or otheruser of -.the saw; toia‘ccomplish
spectively welded or otherwisesecured to the strip
24. ‘.FOI‘ the purpose ~7cf'securing the "sawto the
the cutting of theteethina.minimumramount of
time consistent with accomplishing-the’best,re
.sults; to render'the parts readily accessiblesforiin
~.carriage,,-I provide the clamps >26, 21 and 28 which
rareradjustably mounted uponthe arms-2| , 22 and
spection, adjustment, replacement, restorationcor
23,.respectively. For the purpose of maintaining
the tracks l?‘fand ‘H in properialignmentgl, pro
repair and generally to v[provide “an ‘apparatus
which is economical ofconstruction,te?icientiin
vide-the ties ‘~25 *and ~25a<the ends of which ‘are tse
action and of prolonged lifeand durability. vMy
5 115
invention further consists .of .other novel vfea
tures of construction, ,and combinationsandlar
rangements of parts, illustrated in the ‘drawing
and hereinafter more speci?cally described {and
claimed.
Attention is hereby directed ‘to the idrawinglil
lustrating a preferred form of my invention,=in
which similar ‘numerals of designation refer .to
toured thereto bymeans ofzcapscrews 25b.
Resting ,within :the recess :29 "formed 'between
the "ties =39~and 3!, welded to the member ‘20, is
:the .ind-exrbar 32, whichindexbar is provided with
'iequallir Spaced teethv 33. This index bar is for
the ‘purpose of brin gin-g‘about the required spac
ing‘ ofrnewteeth of. the saw-.formed'in-the€manner
hereinafter vdescribed sand-inlay be interchanged
withiotherbars with: different spacing‘ of the teeth
ifcdesired. Longitudinal movementiof thebar 32
is vprevented by the vvstop ‘34 at the 'end of the
similar parts throughout the ‘several views, and
‘.25 recess '29.
in which,
Figure 1 is a plan View of a preferred form :of
-—Pivotally zmounted ‘upon ‘longitudinal member
apparatus embodying :my . invention showing ‘the
track and carriage .mounted thereon, c upon which
Zllby means ofvimachine screws 35 are the :clamps
>36 \releasably .in engagement with bosses 36a on
carriage theysawxiseshown to be .attach'ediinoper
ative position; the punch mechanism .for cut
ting the teeth of the sawvand' adjacent mechanism
alsobeing shown:
Fig. 2 is‘ a front elevation ofaportion of the-vap
paratus shown in Fig. 1, looking;at-thesamelinthe
direction of'the arrows2-—2;
Fig, 3 is an enlarged ‘detail plan vieyshow
ing the frictional clamping :means :for slidably
holding'the carriage in its progressronithe track,
in, unclampedposition;
an
said member, and downwardly depending from
each‘ of said.- clamps» andpreferably:integralthere
vwith is-a'shoe?l vin sliding contact with one side
ofrrail 1.6; a compression spring 38 attached to one
end iofieach clamp and also to the member '20,
serving normallyto keep eachvshoe 3'! in yielding
sliding engagement with track '55 ‘as shown in
Fig. 1. Preferably secured to :the underside of
member 20, opposite to each of the clamps 36,
and in sliding contact-with the oppositeside of the
track l6, are the shoes39 forming va rigid part of
Fig. 4 is a lateral sectionon line 4-4 of Fig. 1,, 4-0 the structure of saidlrnember it ‘(see ‘Fig. 3') .
looking .in the direction of the arrows;
.Mounted upon thelcasting i!) are the bearings
Fig. 5 is a section on line 5——5.of.Fi_g '4, looking
4,0 and“ , - and’ .journalled :within said bearings .is
in the direction of the arrows;
theeshaftallz, to-whichis ?rmly attached'one end
‘Fig. 6 is a section on‘lineG-? ofFig. 4, looking
of the rockerarm :43; the otherendof said 'arm
in the direction of the arrows;
being secured by the connecting "rod ‘44 to *-'the
Fig. '7 is a section of Fig. 5.on,line v'l—'l, looking
crankshaft .45 by means of =crankp-in 46. The
in the direction of the arrows, and
periphery-of said crankshaft ~45 is contoured to
Fig. 8 is a section on line 8-18 OflFigjEiloOking
‘form theicam It‘! positioned to engage ‘with the
in the direction ofithe arrows.
.
cam #011448 upon 011€i€11d~0f the strippergarm 49,
Referring to the drawing, secured-tothelbedlor .50 the .other .end ‘of which. is mounted to oscillate
foundation 9 is the hollow casting lathe-body of
upon .theshaft-llz. Also‘as shown‘ ,thessaid strip
which is rectangular inform and toiwhichiis se
per arm-A9 :is . provided with J the extension :50 hav
cured the extension ll preferablyintegral .there
ing the ~?nger .5! ‘located “to make vrigid contact
with. Mounted upon the casting “land secured
with the ‘face of ‘saw
and extending forwardly
thereto'by means of cap screws J2§is the plate 13.
and upwardly from the rocker arm 43,-».is the
2,514,567
4
3
49 and ?nger 5! serving intermittently to hold
socket 53, the upper part of the base of said
the edge of the saw rigidly to the die solely while
socket being threaded to receive the adjusting
the punch is cutting a tooth, and while the punch
screw 54 and the lower part of said bore having
is being withdrawn from the cut thereof.
secured therein gibbs 55; machine screws 55a
In feeding the saw through the apparatus so
serving to hold the said gibbs ?rmly in position. UK
that the teeth are regularly cut by the punch,
In contact with said gibbs, is the punch 56, a set
screw 51, threaded to engage an opening in the
wall of socket 53, serving‘ to contact the wall of
said punch and to hold the punch rigidly in place,
and to guard the ‘same against dislodgmen-t.
10
As shown in Fig. 1 of the drawing, the main
portion of crankshaft 45 is journalled in hear
ing 58 on extension H, and connected with the
outer end of said crankshaft 45 is the drive pulley
59, connected by the belt 60 to a suitable source
of power. Attached to the pulley 59 is the cam
one tooth at a time, the action of the apparatus
is as follows: As the pulley 59 revolves the move
ment of cam 6| causes the cam roll 62 to move
back and forth through a narrow arc, the link
. 1 . 63, and thereby to oscillate the shaft 64, whose
outer end is connected with arm 65, upon which
. ‘is’ pivotally mounted the pawl 66 in contact with
' '3 the teeth 33 of the index bar 32, with the result
with every revolution of the pulley 53 the
15 that
said bar is advanced one tooth carrying the car
to
6|,the
upon
linkwhich
63, secured
rides the
to the
cam
shaft
roller
64, 62
upon
attached
whose ‘ .
riage therewith, and upon the carriage coming
to rest, the punch is timed to punch one tooth
‘out of the edge of the saw.
outer end is mounted the arm 65, carrying the
My invention may be embodied in other spe
pawl 66 in contact with the teeth 33 of the in 20
ci?c"forms without departing from the spirit or
dex bar 32.
essential characteristics thereof. The present
As illustrated in Fig. 6, I have shown a special
form of bushing Ma and 49a for bearings Ill and
embodiment, as above set forth, is therefore to
40, respectively, each of said bushings being
be considered in all respects as illustrative and
tapered in form and slotted on one side in order 25 not restrictive, the scope of my invention being
to permit longitudinal adjustment thereof by the
indicated by the appended claims rather than by
the above description, and all changes which
adjusting screws Mb and 4%, respectively, en
come within the meaning and range of equiva
gaging with the walls of bushings M a and 40a,
so that when the said bushings become worn they
lency of the claims are therefore intended ‘to be
may be adjusted to take up the wear of the shaft 30 ‘embraced therein.
42 thereof. Also in Fig. 5, I have shown spring
'What I claim and desire to secure by Letters
51 af?xed by the pin 68 to the bearing ill, the free
Patent is :'
‘
'
'
_
end of said spring being located so as to make
_ 1. In apparatus of the character described, a
engaging contact with the saw 52 and to hold,
base, a carriage for a ‘hand saw mounted to slide
securely the same in operative position.'
35 ‘upon said base,'index means affixed to said car
Also in Fig. 8, I have shown the die 69 and the
riage and operable to advance said saw through
holding means therefor comprising the channeled
the space required to form a single tooth, a rock
and ?anged casting 10 and clamp ‘H secured
’irig' arm carrying a punch and a die adjustably
thereto by the cap screws 72 and set screw 13.
mounted upon said base and located to contact
As further shown in Figs. 4 and 5 the said hold
the edge of the blade of said saw, said punch be
ing means for the die 69 also comprises the cap
ing secured in a socket upon said arm by pressure
plate 14 secured to said ?ange ‘H! by the cap
of set screws and gibbs adjustably fastened to the
screws 75. Also the die 69 is shown preferably
inner wall thereof, and ‘mechanism cooperating
made of two separated parts, or pieces, 69a and
with said index means and said punch and die
for cutting successive teeth in the edge of said
69b, adjusting screws 16, threaded to engage with
openings provided therefor in said plate 14, and
in contact with the lower ends of said parts, serv
ing to adjust the same upwardly or downwardly
as may be required.
saw.
I
-
2, In apparatus for cutting teeth in handsaws,
the‘ combination of a base; rails forming a track
horizontally secured to the top of said base; a car
To operate my improved apparatus, the hand 50 riage for said hand saw mounted to slide upon
‘said track; an equally spaced toothed index bar
saw '52 is secured to the carriage l8, by means
removably afiixed to said carriage; a pawl mount‘
of‘clam'ps 25, 21 and 28; and the toothed edge
ed upon said base and operatively engaging with
thereof, or edge in which the teeth are to be cut,
placed ‘in operative position on bar I‘! so that
‘the‘teeth of said bar; means connected with said
base for actuating said pawl and for moving said
said edge will be centered in respect to the middle
carriage the space of one tooth of said bar; an
of the top of said bar l1, and positioned to slide
arm pivotally mounted‘ upon a shaft journalled
thereon. At the same time, there is installed
in longitudinally adjustable tapered bushings
in the groove 29, the index bar 32 having the
number of teeth in the spacing required. There
within bearings secured to said base; a punch ad
upon the arms of the clamps 36 are manually re 60 justably secured in upright position to. one end
leased from bosses 36a upon the carriage mem
of said arm; and a die ‘mounted upon said base
and positioned to engage with said punch; said
ber 20, and the shoes 3'! brought into yielding slid
ing contact with the rail l5. Then power being
arm cooperating with said index means for cut
ting one tooth at a time in regular continuous
applied, through the connection of the belt 60
with pulley 59, the aforesaid punch mechanism ea spaced succession from the edge of said saw. ,'
is started in operation, and the teeth punched in
3. In apparatus for cutting teeth in handsaws,
the edge of the saw blade in the same manner as
thecombination of a base; rails forming a'track
that used by the ordinary punch, as well under
horizontally securedv to ‘ the top of said base; a
carriage‘for said hand saw mounted to slide upon
stood in the art, greatly aided and assisted, how
ever, by my new rocker system of operation of 70 said track; an equally spaced toothed index bar
removably a?ixed to said carriage; ‘a pawl mount
said punch and the novel positive mechanical
ed upon said base and operativelyengaging with
stripper, each hereinbefore more particularly de
scribed; the rocker system comprising arm 53 and
the teeth of said bar; means connected withsaid
laterally connected mechanism for operating the
base for actuating said pawl and for moving said
same and the said stripper comprising the arm
carriage the space of one tooth of said bar; mechs
2,514,567
anism comprising an arm pivotally mounted upon
a shaft journalled in longitudinally adjustable
tapered bushings within bearings secured to said
base; a punch adjustably secured in upright po
sition to one end of said arm; a die mounted upon
said base and positioned to engage with said
punch; said arm cooperating with said index
of said plate; a carriage for said hand saw mount
ed to slide upon said track and having shoes in
spring yielding sliding engagement with one of
said rails; an equally spaced toothed index bar
removably a?ixed to said carriage; a pawl mount
ed upon said base and operatively engaging with
the teeth of said bar; means connected with said
base for actuating said pawl and for moving said
carriage the space of one tooth of said bar; mech
continuous spaced succession from the edge of
said saw; and intermittently mechanically oper 10 anism comprising an arm pivotally mounted upon
a shaft journalled in longitudinally adjustable
able stripper means connected with said arm for
tapered bushings within bearings secured to said
holding the edge of said saw rigidly to the die
solely while the punch is cutting a tooth and while
base; a punch adjustably secured in upright po
being withdrawn from the cut thereof.
sition to one end of said arm; a two piece die
mounted upon said base and positioned to engage
4. In apparatus for cutting teeth in handsaws,
with said punch; each piece of said die being in
the combination of a base; rails forming a track
means for cutting one tooth at a time in regular
horizontally secured to the top of said base; a
dependently longitudinally adjustable in respect
carriage for said hand saw mounted to slide upon
to the other, and said arm cooperating with said
index means for cutting one tooth at a time in
said track; an equally spaced toothed index bar
removably affixed to said carriage; a pawl mount
ed upon said base and operatively engaging with
regular continuous spaced succession from the
edge of said saw; and intermittently mechanically
the teeth of said bar; means connected with said
operable stripper means connected with said arm
base for actuating said pawl and for moving said
carriage the space of one tooth of said bar; mech
anism comprising an arm pivotally mounted upon
a shaft journalled in longitudinally adjustable
tapered bushings within bearings secured to said
base; a punch adjustably secured in upright po
for holding the edge of said saw rigidly to the die
solely while the punch is cutting a tooth, and
while being withdrawn from the cut thereof.
stion to one end of said arm; a two piece die
mounted upon said base and positioned to en
gage with said punch, each piece of said die be
BYRON G. DAGGETT.
REFERENCES CITED
The following references are of record in the
?le of this patent:
' UNITED STATES PATENTS
ing independently longitudinally adjustable in re
spect to the other, and said arm cooperating with
said index means for cutting one tooth at a time
in regular continuous spaced succession from the
edge of said saw; and intermittently mechanically 35
operable stripper means connected with said arm
for holding the edge of said saw rigidly to the
die solely while the punch is cutting a tooth, and
while being withdrawn from the cut thereof.
5. In apparatus for cutting teeth in handsaws, 40
the combination of a hollow base rectangular in
form; a plate ?rmly mounted upon said base; rails
forming a track horizontally secured to the top
Number
‘ Name
Date
l
1,717
37,853
154,200
205,311
207,456
Carver __________ __ Aug. 12,
Chapman ________ __ Mar. 10,
Vosburgh ________ __ Aug. 18,
Spaulding ________ __ June 25,
Strong __________ __ Aug. 27,
1840
1863
1874
1878
1878
383,191
888,704
1,805,831
2,318,478
2,407,921
Romer et a1 _______ __ May 22,
Gebhart ________ __ May 26,
Mathieu __________ __ May 19,
Gardner __________ __ May 4,
Engle ___________ __ Sept. 17,
1888
1908
1931
1943
1946