Machine For Cutting Thong Holes Page: 2 of 3
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UNITED STATESPATENT OFFICE.
CHARLES EBERLE, OF DALLAS, TEXAS.
MACHINE FOR CUTTING THONG-HOLES.No. 799,839.
To all who7nit 7nary concern:
Be it known that I, CHARLES EBERLE, a
citizen of the United States, residing at Dal-
las, Texas, have invented a new and useful
5 Machine for Cutting Thong-Holes, of which
the following is a specification.
My invention relates to leather-working
machines, and more particularly to ma-
chines for cutting holes in leather for the pur-
io pose of sewing in thongs; and the object is to
provide machines for cutting holes in leather
for thongs more uniformly and much faster
than can be done as heretofore done by hand,
and thus save time and labor. Such ma-
15 chines will be particularly useful in collar
manufacturing. Collars sewed with wide
thongs are much stronger and more durable
than collars sewed with cords or. round
thongs.
20 Other objects and advantages will be fully
explained in the following description, and
the invention will be more particularly
pointed out in the claim.
Reference is had to the accompanying
25 drawings, which form a part of this appica-
tion and specification.
Figure 1 is a side elevation of the machine,
with the casing thereof shown in section,
illustrating the disposition of the various
30 elements. Fig. 2 is a perspective view of the
presser-foot. Fig. 3 is a broken vertical sec-
tion as seen from the right of Fig. 1. Figs. 4
and 5 illustrate the cams for actuating the
lever and the rock-shaft near the bottom of
35 the machine. Fig. 6 illustrates by side ele-
vation and end view two styles of cutting-
awls or cutters. Fig. 7 is a perspective view
of the crank rock-shaft. Fig. 8 is a plan view
of the foot-plate.
40 Similar characters of reference are used to
indicate the same parts throughout the sev-
eral views.
The machine is provided with a suitable
casing 1, in the upper part of which is located
45 a driving-shaft 2, journaled in bearings 3 and
4. A drive-wheel or balance-wheel 5 is fixed
on shaft 2, and a wheel or disk 6 is fixed on
the forward or outer end of the shaft 2. A
pin 7 is fixed in the wheel .6 for actuating the
50 cutter 8. This pin 7 is eccentrically dis-
posed in the wheel 6. A movable bearing 9,
engaging the pin 7, is mounted in a groove in
a block 10, which carries the cutter 8. The
bearing 9 has a circula motion by reason of
55 the turning of the wheel 6 and a transverse
motion relative to the block or blade-carrierPatented Sept. 19, 1905.
10. The block or cutter-carrier is thus given
a vertical reciprocal motion by the pin 7.
This action makes the machine capable of
cutting holes in the material fed to the.ma- 6o
chine. A bearing 11 for the cutter 8 is se-
cured in the block 10, and the cutter-blade
may be secured in the bearing 11 by a set-
screw. The block 10 also carries the presser-
foot 12. A recess is cut in the block 10 for a 65
spiral spring .13. A presser-foot carrier 14
has a shoulder 15 resting on a ledge 16 at the
bottom of block 10 and which partly closes
the recess in said block. The upper part of
the presser-foot carrier extends up within the 70
spiral spring to some extent. The presser-
foot 12 may be secured on the carrier 14 by a
set-screw. The spring 13 will keep the
presser-foot pressed down, and in the verti-
cal reciprocal motion of the block 10 the 75
presser-foot will strike the foot-plate 17 be-
fore the block 10 makes its full beat and will
remain for an instant or very short time on
the foot-plate after the block 10 starts up-
ward. This enables the presser-foot to per- 8o
form its part in holding the material in place.
The machine is provided with feeding
mechanism. The shaft 2 carries cams A and
B. These cams actuate pitman-rods 18 and
19. The pitman 19 is pivotally connected to 85
the lever 20, and the pitman 18 is pivotally
connected to a crank 22, which is rigid with
the shaft 21. The pitman 18 engages the
cam A by means of a yoke 23. The pitman
19 may be provided with a bearing 24 to be 90
engaged by the cam B. The bearing 24 is
pressed by gravity against the cam B.
Guides 25 may be provided to maintain the
vertical position of the pitman 19. The le-
ver 20 is fulcrumed at 26. The lever 20 and 95
the rock-shaft 21 both together actuate the
feed-blade carrier 27, which is given a verti-
cal and transverse motion by the lever and
rock-shaft. The block 27 has two flat lugs
28, which are engaged by the lever 20 to give zoo
this block a vertical motion. The only func-
tion of the lever 20 is to give a vertical recip-
rocal motion to the feed-blade carrier 27.
The feed-blade 29 is flat and may be secured
in the carrier. 27 in any suitable manner. 105
The carrier 27 is given a 'transverse motion
by the block 30. The block 30 has a groove
therein to receive the carrier 27. The block
30 is given a transverse motion by the bifur-
cated or forked crank 31, which engages a pin iio
32, mounted in the block 30. The pin or
bolt 32 is mounted in a vertical slot in theSpecification of Letters Patent.
Application filed October 10, 1904. Serial No, 227,859.
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Eberle, Charles. Machine For Cutting Thong Holes, patent, September 19, 1905; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth510153/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.