Leather-Working Machine. Page: 15 of 25
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922,105
tached to the rod or bar 181 and presses on
either face 24 or 25. The spring 26 nor-
mally presses on the face 25 with sufficient
force to hold the feeder 19 at upright or right
5 angles to the sprocket chains, as shown in
Fig. 1 and Figs. 2 and 3. The feeder is thus
carried through the machine. The object in
having the feeders pivotally mounted is, that
the feeder, when not in use, may be turned
10 down to one side against the outside of the
sprocket chain, as shown by plotted outline
in Fig. 2. The spring 26 is adapted to hold
the feeder in either position. The real ob-
ject of this provision is that when very long
15 straps are being operated upon, the feeders
not in use, which would travel in the path or
beat of the strap, may be turned down to the
plane of the sprocket chain so that the feed-
ers will not mutilate the strap, the feeder be-
20 ing provided with teeth for engaging the
straps.
The tension of the sprocket chain is regu-
lated at the rear end of the machine. The
shaft 27, on which the sprocket wheels for
25 chains 16 and 17 are mounted, is journaled
in adjustable bearings 28 and 29. The
bearings 28-and 29 are provided with legs 30;
which are pivotally mounted on bars or rods
31, and the bearings 28 and 29 are provided
30 with upwardly extending ears 32. Screws
33 are mounted in the frame piece 2 and pro-
ject through these ears, and are provided
with nuts 34 by which the bearings 28 and 29
may be adjusted to regulate the tension of
35 the sprocket chains 16 and 17.
The mechanism for receiving and starting
a strap in the machine is shown. at the right
side of Fig. 1, at the left side of Fig. 5, and
the detailed view of Figs. 8 and 9.. The re-
40 ceiving and starting mechanism is mounted
on bars 35 which are attached to the station-
ary frame. A bow 36 is mounted on the bars
35 and bolted thereto by bolts 37. Springs
38 and 39 are bolted to the bow 36, and
45 curved under the bow 36, as shown in Figs.
I and-8. The spring 38 is extended forward
of the how 36. Three springs, 40, 41, and 42,
are attached to the spring 38, and a rod 43
connects the forward end of spring 38 with
50 the two springs 38 and 39, as shown in Fig. 8.
The ends of these springs constitute bars for
pressing the straps on the feeders, and are
held just above the path of the straps by the
rod 43 which is adjustable by the nut 431.
55 These bars have upward yielding motion
to permit the passage of straps of different
thicknesses. A starting spring 44 is bolted
to spring 39, as a guide for starting the strap
into the machine. This spring 44 will keep
60 the strap pressed down until the feeder, car-
ried by the sprocket chain, takes hold of the,
strap. The how 36 is braced on each side by
rods 45 which are bolted to the stationary
spring and to the sides of the bow by suitableM.
nuts 35 and 37 and brackets. 48. The ma- 65
chine is provided with a guard 49 which is
attached to the lower part of frame piece 1
and extends in a curve-upward and above the
outer ends of the bars 35, as shown in Fig. 8,
and is attached to the bars 35 by means of 70
bolts 50. The guard 39 is bifurcated at the
upper end for the passage of the feeder 19.
The curved dotted line 51, in Fig. 8, indi-
cates the path of the teeth of the feeder.
52 and 53 indicate straps of different thick- 75
nesses which may he treated by the machine,
and the drawing shows the points at which
the straps are to be fed to the machine. A
movable clip or shield 54 is mounted on the
guard above the bend in the guard and 80
stands normally in the position shown in
Fig. 8, and is held in this position by a spiral
spring 55, which may be attached to the
lower part of the guard 49 and to the end of
the shield 54. A dog 56 is pivoted to the 85
shield 54. The feeder 19 engages the dog 56
by means of the shoulder 57, and the dog 56
moves in the passage between the blocks 58
and carries the shield 54 therewith until the
dog swings back on the left hand side of 90
guard 49, by reason of the notch 59 in the
side of dog 56, and remains there until the
feeder passes by. When the dog 56 is re-
leased by the feeder 19, the spiral spring 55
draws the shield 54 back to its normal posi- 95
tion. The shield 54 goes through this oper-
ation as often as a feeder 19 passes through
the shield. The object of this shield is to
prevent another strap from being fed to the
machine after the front of the feeder has 100
passed the receiving point, or spring 44.
When the shield is carried to the strap start-
ing by the feeder, the shield covers all the
teeth of the feeder except the forward teeth,
consequently the extreme forward end of the 105
strap must engage the forward teeth of the
feeder and in this manner all the teeth of the
feeder are made to engage the strap and it is
impossible for the strap to be engaged by the
rearward teeth only of the feeder. The 110
straps are secured on the teeth of the feeder
by means of springs 38 to 42 inclusive. If
the front teeth of the feeder engage the
strap, then the springs will press the strap
on all the teeth of the feeder. The spring 44 115
starts the strap on the teeth of the feeder and
holds the strap down while the springs 38
and 39 press the strap firmly on the teeth of
the feeder. If it were not for the springs 40,
41, and 42, the strap would tilt upward just 120
as the feeder passes from under springs 38
and 39, and thus become loose on the feeder.
The springs 40 and 42 become weaker in
progression up to 42, so that the pressure is
relieved from the strap gradually. Guide 125
arms 132 are attached to the frame of the
machine and serve to center the strap on the
feeder. By means of these arms, together
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Reference the current page of this Patent.
Russell, Frank K. Leather-Working Machine., patent, May 18, 1909; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth508306/m1/15/?rotate=90: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.