Year: 1887

page_text: Date of Application, 3rd Oct., 1887
Complete Left, 14th Nov., 1887
Complete Accepted, 16th Dec., 1887
I, JOHANES ALBRECHT of Cannstatt, in the Kingdom of Wirtemberg, German
Empire, Mechanic, do hereby declare the nature of this invention to be as follows:-
My new shoe-sole sowing-machine belongs to that class of sewing-machines which
produce double lock-stitches, and has for its purpose to sew the soles on to the shoe
with two pitched threads by means of a hook-needle and of a shuttle.
These improvements are shown in the accompanying drawings in which figure 1 is
a side-elevation partly in section; figure 2 a front-elevation and figures 3-10 are
details hereinafter described.
The machine is put into operation by the main driving shaft a on which a fly-wheel
and a grooved disk a' are mounted. Another shaft or rod a² is with its ball-shaped
head pivoted to the end of shaft a. Shaft a rests in a bearing band may be moved
up and down in a slit or guide b¹ of the machine frame. Needlebar n receives its
reciprocating motion by the lever m being actuated by grooved disk a¹.
The shuttle (Figs. 6, 7, 8, 9, and 10) rotates in a ring r and is operated by disk c
and driver c being mounted on shaft a². Shuttle-ring being provided with an
opening or cutting on its lower side, is shoved over bearing 6 (Figs. 4 and 6) and is
fastened to the same by means of screws. Shuttle S has its point on its side (see
Figs. 6 and 7) so that the position of shaft a² may be made to incline with regard to
needle-bar n and that the lower edge of the shuttle slightly touches the needle; and
thus the loop of the thread may be hung up, as is shown in figs. 6, 8 and 9. Presser-
ring h surrounding shuttle ring has its fulcrum in pin (figs. 1 and 5) and is
closely guided by cheeks h², hand screw he.
Cheeks and penetrate shuttle ring r and bearing b and rest against disk c in
which two cams and are inserted pushing alternately against the cheeks and
pressing thus the ring one time downward and another time to the left, while a
spring is permanently tending to pull the ring upward and to the right (see fig. 5).
There is also arranged an adjusting screw for regulating the size of the stitches,
for when it is screwed forward, the ring will not travel such a great distance as when
the screw was screwed back. The presser point his screwed to ring h. (figs. 1, 4
and 5). Bed-plate or horn p is movable in its bearing p¹ projecting from the frame
[ Prino 8}]

page_text: of the machine. By bending over the bed plate p which position is shown in the
drawing, the leg of the boot to be made will be kept in its proper position and the
threads will go through the sole, in nearly a vertical direction, and the mechanism
for attaining this is very much simplified.
The thread lever receives its reciprocating motion by rod and excenter disk a³
(fig. 3), and carries at its front ond lever u having a projection u¹ and a roll u² at its
front end and being guided over a four angled rod u which latter is jointed to rod 10
and w¹ Rod wis provided at its upper end with a very small crank having an eyelet
through which the thread is passed, coming from drum a and being guided over a
under and
The four-angled or square rod is somewhat twisted at its lower end, as may be
well seen in figs: 1 and 2, so that it may be turned a little by the lever when the
latter moves up and down. The consequence of this will be that also rods wo and wo¹
must turn, and thus the thread is laid upon the hook of the needle, and when the
needle is moving up again, the thread will become stretched, and thus the seam will
be drawn tight.
The upper part of the machine, that is, bearing b together with the shuttle and the
presser may be lifted by lever d (fig. 1) and the cloth or leather can be passed through
the raised part and the bed-plate or horn, and the machine is started in this position
until a
loop has been laid over the hook of the needle. Now the lever d has to
be lowered again and the machine is fully started. Hereby needle n will go back and
lever u together with thread guide u move upward, until the shuttle has come into
the position shown in fig. 10.
In the moment in which the needle has arrived in position fig. 8, the shuttle enters
the thread loop and draws along the thread as much as is necessary for its passage,
whereby the thread is taken-off the hook of the needle (fig. 8 and 9.)
When the shuttle and the needle are in position fig. 10, the thread lever moves down
and draws the thread tight and the rod w and w¹ go back into their original position
(fig. 1).
It must be mentioned that before the thread has been drawn tight, cam e² has
pushed against cheek h² and has pressed the presser-foot h' against the cloth or sole
leather, and the presser-foot h' will be raised again as spring will be compressed
above bearing b. Cam e³ presses on cheek h² and moves the cloth to the left.
Cheek will then enter the indented part of came and hereby spring / draws up
the presser and the latter rests on the cloth. But when cheek has arrived into the
indentation of cam e³, the presser ring will be drawn to the right by the spring, and
the presser together with the shuttle will regulate themselves according to the thick-
ness of the leather. As soon as the presser has gone back, the needle will make a
new stitch and all movements of the operating parts will commence a new.
Dated this 30th day of September 1887.

page_text: COMPLETE SPECIFICATION.
Improvements in Shoe-sole-sewing-machines.
1, JOHANES ALBRECHT of Cannstadt, in the Kingdom of Wirtemberg, German
Empire, Mechanic, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
-
My invention relates to "Improvements in Shoe-Sole-Sewing-Machines" and more
especially to those of that class, which produce double, lock stitches, and it has for its
purpose to, sew the sole on to the shoe with pitched threads by means of a hook-needle
and of a shuttle.
These improvements are shown in the drawings accompanying my provisional
specification in which figure 1 is a side-olevation partly in section; figure 2 a front-
elevation and figures 3-10 are details hereinafter described.
The machine, is put into operation by the main driving-shaft a on which a fly-wheel
and a grooved disk a' are mounted. Another shaft or rod a² is with its ball-shaped
head pivoted to the end of shaft a. Shaft a² rests in a bearing and may be moved
up and down in a slit or guide b' of the machine frame. Needlebar n receives its
reciprocating motion by the lever m being actuated by grooved disk a¹.
The shuttle (figure 6, 7, 8, 9 and 10) rotates in a ring r and is operated by disk c and
driver c being mounted on shaft a². Shuttle ring being provided with an indenta-
tion or cutting on its lower side, is shoved over bearing 6 (figures 4 and 6) and is
fastened to the same by means of screws. This shuttle ring is on its lower out-side
near the aforesaid indentation provided with a presser-foot ¹, as shown in fig. 5.
Shuttle S has its point on its side (see figures 6 and 7) so that the position of shaft a²
may be made to incline with regard to needle-bar n and that the lower edge of the
shuttle slightly touches the needle, and thus the loop of the thread may be hung up,
as is shown in figures 6, 8 and 9. Presser-ring h surrounding shuttle ring r, has its
fulcrum in pin h¹ (figures 1 and 5) and is closely guided by cheeks h³ and
screw h*.
Cheeks 2 and 3 penetrate shuttle ring and bearing b and rests against disk c in
which two cams and e³ are inserted pushing alternately against the cheeks and
pressing thus the ring one time downward and another time to the left, while a
spring his permanently tending to pull the ring upward and to the right (see
figure 5).
There is also arranged an adjusting screw for regulating the size of the stitches,
for when it is screwed forward, the ring will not travel such a great distance as when
the screw was screwed back. The presser-point 7 is screwed to ring h, (figures 1, 4

page_text: and 5). Bed-plate or horn p is movable in its bearing pl projecting from the frame
of the machine. By bending-over bed-plate p which position is shown in the drawings,
the leg of the boot to be used will be kept in its proper position and the threads will
go through the sole, in nearly a vertical direction, and the mechanism for attaining
this, is very much simplified.
The thread lever K receives its reciprocating motion by rod K' and excenter
disk a³ (figure 3) and carries at its front end lever U having a projection U₁ and a
roll U2 at its front end and being guided over a four-angled rod V which latter is
jointed to rod and w. Rod is provided at its upper end with a very small crank
having an eyelet through which the throad is passed, coming from drum and being
guided over ¹ under u² and a².
The four-angled or square rod V is somewhat twisted at its lower end, as may be
well seen in figures 1 and 2, so that it may be turned a little by the lever when it
moves up and down. The consequence of this will be that also rods w and w¹ must
turn, and thus the thread is laid upon the hook of the needle, and when the needle is
moving up again, the thread will become stretched, and the seam will be drawn
tight.
The upper part of the machine, that is, bearing together with the shuttle and the
presser may be lifted by lever d (figure 1) and the cloth or leather can be passed
through the raised part and the bedplate or horn, and the machine is started in this
position until a loop has been laid over the hook of the needle. Now the lever d has
to be lowered again and the machine is fully started. Hereby needlen will go back
and lever U together with thread guide U move upward, until the shuttle has come
into the position shown in figure 8.
In the moment the needle has arrived in position figure 9, the shuttle enters the
thread loop and draws along the thread as much as is necessary for its passage,
whereby the thread is taken off the hook of the needle (figures 8 and 9).
When the shuttle and the needle are in position figure 10 the thread lever moves
down and draws the thread tight and rods w and w¹ go back into their original
position (figure 1).
It must be mentioned that before the thread has been drawn tight, came has pushed
against cheek and has pressed the presser foot 17 against the cloth or sole leather,
and the presser-foot will be raised again as spring will be compressed above the
bearing b. Cam e pressés on cheek and moves the cloth to the left.
Cheek will then enter the indented part of came and hereby spring h³ draws
up the presser and the presser rests on the cloth. But when cheek 2 has arrived
at the indentation of came³, the presser-ring will be drawn to the right by the
spring and the presser together with the shuttle will regulate themselves according
to the thickness of the leather. As soon as the presser has gone back, the needle
will make a new stitch and all movements of the operating parts will commence
anew.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. In shoe-sole-sewing-machines making double lock stitches, the arrangement of a
shaft a connecting the main driving shaft a with the shuttle motion, turning in a
ball and socket joint at the end towards the driving shaft a and being guided at its
other end in a bearing b having also at this end a disk which is provided with the
shuttle driver, all substantially in the manner as described.
2. In shoe-sole-sewing-machines making double lock stitches, the arrangement of a
ring being provided with an indentation and presser, in which ring is inserted,
the shuttle S being operated by the driver which is put into motion as claimed sub. 1,
substantially as described.
3. In shoe-sole-sewing-machines making double lock stitches, a presser ring h
turning around a pin, in combination with two cams e² e³ forcing the presser ring h

page_text: alternately to the left and downward, which ring his always drawn back into its
original position by means of a spiral spring, all substantially in the manner and for
the purpose as described.
4. In shoe-sole-sewing-machines a nearly horizontally arranged bed-plate p with
regard to the needle bar n, rod w' having an eyelet and rod to both suitably arranged
under and along the bed-plate p and pivoted to one another, a four angled rod V being
twisted at its lower end and connected to rod w, and a lever U turning said rod V when
it is moved up and down by levers k and k¹, the motion of the latter being derived
from the main driving shaft a, all for the purpose of passing the thread vertically
through the sole and drawing it tight, substantially in the manner as described.
Dated this 10th day of Navm1007
JOHANES ALBRECHT.
By A. Kuhnt & R. Deissler,
No. 38, Alexander Str., Berlin, Germany.