Year: 1887

page_text: Date of Application, 15th Nov., 1887
Specification Accepted, 16th Dec., 1887
I, PHILIP DIEHL of Elizabeth, State of New Jersey, United States of America,
Mechanical Engineer, 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 :-
This Invention has for its object the production of a light and very rapid running
Sewing Machine having an oscillating shuttle contained in an oscillating carrier.
In this Invention the axis of oscillation of the carrier and the shuttle and the centre
of rotation of the bobbin are substantially coincident with the centre of oscillation of
the rock shaft actuating the carrier, and the oscillation of the carrier and shuttle in
unison is through an arc in excess of 180° of a circle.
The carrier is composed of a skeleton head having a series of arms which support
the heel and point of the shuttle, keep it in an upright position and prevent the
shuttle being thrown out of the carrier by centrifugal action, the arms holding the
shuttle loosely in such manner that it may be readily passed through the loop of
needle thread, the shuttle being held in a recess at the front of the carrier by a carrier
face shown as a segmental finger attached to the carrier between that arm which
sustains the point and that arm which supports the heel of the shuttle, the shuttle herein
shown having a point and also a loop discharger longer than the point as described in
an application for patent bearing equal date herewith the loop discharger being
perforated for the passage of the needle thereby enabling a shorter needle to be used.
The Invention is shown as embodied practically in connection with that class of
machine represented in a former patent No. 3079 dated 29th July 1879.
The Invention consists essentially of a rock shaft D, its attached carrier, a shuttle
therein having a beak, and a loop discharger extended in the direction of but longer
than the said beak, a bobbin and a bobbin case, a needle bar to carry an eye-pointed
needle, a rotating shaft to actuate the needle bar, and mechanism intermediate the
said rotating shaft, and the rock shaft to which the carrier is attached to turn the said
rock shaft and cause the beak of the shuttle to travel at each oscillation through an
are of more than 180°, the combination being and operating substantially as will be
described.

page_text: Other features of the Invention will be hereinafter described and specified in the
Claim at the end of this Specification.
Figure 1 is an underside view of a sewing Machine embodying the Invention.
Figure 2 is a rear side elevation of the Machine shown in Figure 1, the framework
being partially broken out to show the main and other shafts instrumental in operating
the needle bar, shuttle carrier, feeding mechanism and take up.
Figure 3 a left hand end elevation of the machine or of Figure 2 looking at it from
the side opposite that shown in that figure.
Figures 4, 5 and 5ª are respectively front and side elevations of the carrier.
Figures 6, 7 and 8 are respectively front and side elevations, and top or plan views
of the shuttle alone.
Figure 9 shows a front and side elevation of the bobbin within the bobbin case.
Figure 10 is a section of the bobbin case alone.
Figure 11 a section of the bobbin,
Figure 12 a section on the line X3 Figure 3 looking up chiefly to show the
bobbin case holder and its support, and the pin or stud on which it is permitted
to turn.
Figures 13, 14 and 15 show the needle, shuttle, shuttle-carrier, bobbin case and
bobbin in different positions, the carrier face shown in Figures 1 & 3 being broken
off to better show the manner of forming the stitch.
Figure 16 is a view of the carrier face detached ; and
Figure 17 the blank from which the carrier is made by forging.
The bed plate A, the overhanging arm B, the main rotating needle bar actuating
shaft C, its cam hub T', the take up lever T moved by it, the needle bar h carrying
an eye pointed needle n, the link connected to the crank of the shaft C and to the
rock shaft I, the feed bar K, the feed bar lifting rock shaft E having arms e² c³ and
actuated from the cam c on the rock shaft I, the said cam working between the forks
of an arm c², the feed regulating rock shaft F having arms e e¹; the lever J; the cam
or eccentric d on the shaft C for vibrating the lever J; the devices for altering the
throw of the said lever and rock shaft F to determine the length of stitch and the
shuttle carrier actuating rock shaft D are all as in machines heretofore made by me.
The carrier rock shaft D has at its rear end an arm p² having a crank pin p³ that
enters a slot or groove in an arm p* of the rock shaft 1, the centre of which bears such
relation to the rock shaft D that as the rock shaft I is rocked or oscillated by the
link connected to the arm 2 of the said rock shaft and to the rotating shaft C, the
shuttle carrier H secured to the forward end of the shaft D will be oscillated through
an arc of more than 180° preferably an arc of over 200° in one and then in the
opposite direction during each complete rotation of the main or operative shaft (
during each complete reciprocation of the needle and needle bar, or in other words
the beak of the shuttle moves through over 400° of a circle while the needle bar
actuating shaft rotates once.
The shuttle carrier H made preferably from a blank having arms or horns h², h³, h*
and he and an ear as shown in Figure 17 is struck up in a die or bent into the
shape shown in Figures 4, 5 and 5ª.
The notch 2 in the arm 2 receives the heel 3 of the shuttle b, and the arm h³ enters the
space between the beak 61 and the loop discharger 63 of the shuttle b, the said arms h
and h³ acting to support the weight of the shuttle and by engaging the shuttle at its
heal and near its beak, as shown, causes the shuttle to be moved forward through the
loop of needle thread carried by the needle n* and then back into position preparatory
to again entering a second loop of needle thread.
The shuttle 6 is made as a narrow segmental rim of about 180° long, the rim having
extended from it one or more arms 4, one of which carries the post 5, on which is
mounted the hollow journal 6 (see Figure 10) of the bobbin m, carrying the under or
second thread t, the said bobbin being free to be rotated by the pull of the thread
upon it, but the bobbin case g¹ is restrained from rotation by means of a bobbin case
holder m³ (see Figure 3) composed of an arm notched at its upper end to engage a
lug g' attached to the front of the bobbin case.

page_text: This arm has two like ears 8 bent from it at right angles, one of which is shown in
Figure 12, the said ears fitting the reduced neck 10 of a stud 12, depending from the
bed plate, see Figure 3, the lower end of the neck 10 being tapped to receive a
screw 14, the shoulder formed at the junction of the neck 10 and main body of the
stud 12, having a pin or projection 15, see Figure 12, which extends into a slot or
notch cut out from the outer edge of one of the ears 8, the pin 15 serving as a stop
to limit the movement of the holder m³ toward and from the bobbin case.
One side of the neck is cut away or slabbed off, as shown in Figure 12 so that a
spring 17 connected to the holder by a screw 18 may act thereon and keep the holder
in position with its notched end in engagement with the bobbin case.
The bobbin case is cut away at its front side and levelled as at 93 as in my applica-
tion for patent bearing even date herewith so that the loop of needle thread
will be unerringly cast off by the loop discharger b³ and by the take up lever T
acting on the thread.
The arm * constitutes a rest against which bears the rear side of the segmental
rim of the shuttle b at a point about midway between its heel and beak, the outer side
of the said oscillating shuttle being normally pressed toward the inner side of the
carrier face or under thread guard n² shown as a segmental finger attached by screws 20
to the lug or ear h², the inner side of the said face n² acting to determine the position
of the face of the shuttle b, a spring 22 attached to the said lug by a screw 23 and
acting against the rear side of the shuttle substantially opposite the junction of the
beak 6' and the loop discharger 63, keeping the point of the beak in just the proper
position to ensure its entrance into the loop of needle thread close to and without
striking the needle nt.
The two arms h³, 16, by extending partially across the shuttle serve to keep the
latter seated on the supporting arms and h³, the said arms h and he overcoming
all liability of the shuttle escaping by reason of its centrifugal motion or force
appreciable in high speed.
The inner side of the carrier face n² or finger is so shaped that the said face n²
opposite the number 43, Figure 4, and about opposite the arm 4 bears against the
outside of the shuttle thus aiding in keeping the shuttle in proper upright position to
co-operate with the needle.
The loop discharger 63 receives the loop of needle thread upon it just as or a little
before the point of the beak breaches the position Figure 14.
As the loop discharger advances from the position Figure 14, the loop of needle
thread is spread over the bobbin case g', and just about as the loop of needle thread
crosses the screw 32, the point of the loop discharger being then in its most forward
position the take-up begins to act and pulls the loop of needle-thread off the loop
discharger and upon the bobbin case before the shuttle has fully completed its forward
movement, the loop being drawn up by the take-up between the heel 3 and the arm h²,
just as the shuttle carrier commences its return movement, the take up completing its
ascent while the arm h³ is opposite the needle hole in the cloth plate, the needle being
elevated out of the work.
The arm will preferably have a heel 10 against which may rest the enlarged
heel 3 of the shuttle.
The loop discharger 63, herein shown, is slotted as at 26, and the beak 6¹ placed at
one side of the loop discharger, see Figure 8, is concaved, see Figure 8, to form a
side point to enter the loop of needle thread when the needle is in the position
Figure 13.
The needle n descends through the slot 26 in the loop discharger 63 so that the
latter acts as a needle guard as the beak 6' enters the loop, and at such time the
face n² of the carrier or the segmental finger is interposed between the shuttle and
the underthread passing from it to the material.
The tension on the under or bobbin thread is made variable as desired by turning
a screw 32 extended through a concavo-convex spring 33 having, as herein shown,
two feet 34, 35, and a teat 36, the latter entering a hole or recess in the
bobbin case.

page_text: The feet 34, 35, rest on the bobbin case, and the screw 32 enters a concavity, see
Figure 10, in the spring, rotation of the screw to turn it into the bobbin case
increasing the pressure of the upper flat end of the tension spring 33 on the bobbin
or under thread t³.
The sharp inward bevel of the foot 34 of the tension spring aids in accelerating the
passage of the loop of needle thread from the loop discharger, for between the
positions Figures 14 and 15 the loop of needle thread is passed beyond the screw 32
and upon the said inclined or bevelled foot of the tension spring down which it slides
and in so doing is caused to travel off the discharger 6 very rapidly, the bevelled
portion of the shuttle and the bevelled foot aiding this action very materially.
Holding the shuttle in an oscillating carrier obviates the employment of a raceway
in which the shuttle slides, and consequently the shuttle is subjected to the minimum
of wear and friction.
So also by mounting the bobbin and bobbin case on a stud or post 5 of the shuttle
in line with the centre of oscillation of the rock shaft D to which the carrier H is
attached, the strains exerted by the rapid oscillation of the carrier and shuttle are
reduced to the minimum, and so also by oscillating the carrier shaft D and
carrier H through an arc of about 200° during each rotation of the needle bar
actuating shaft C it is obvious that the beak of the shuttle travels through more than
360° of a circle or through substantially 400° of a circle during each stitch which
enables us to utilise a greater proportion of the time used for each stitch for the take
up and then feed to operate.
One well known form of mechanism is herein shown and described between tho
shafts C and D to enable the latter to be rocked or oscillated from the former as it is
rotated, but I desire it to be understood that I do not intend to limit my Invention
to the exact devices shown for instead of them I might use any other well known or
equivalent devices by which the shaft D may be rocked for more than 180° in one
and then back in the opposite direction during each rotation of the shaft C.
In my application for patent bearing even date herewith the outer side of the
shuttle is made flat or as a plane surface to run against the smooth guiding face of
the shuttle race and consequently the centre face of the shuttle is located at one side
the path in which the needle reciprocates.
In the machine herein described having a carrier A the shuttle is placed
substantially under the needle hole and in the line of reciprocation of the needle, for
by such location of the shuttle the loop of needle thread when being drawn down is
not only more evenly expanded, but the loop of thread is drawn from the needle
with less side strain on the needle, which, in a high speed machine is very
essential.
To enable the shuttle to be placed directly under the needle, the loop discharger
has been slotted to receive the needle when its point is below the throat plate, and at
the same time the said slot enables the shuttle carrier to be placed nearer the cloth
plate than would be possible were the slot omitted, and as a result thereof it is
possible to employ a shorter needle which is of material practical value.
The free end 43 of the carrier face n², as shown, is bent inwardly and backwardly
to terminate between the periphery of the bobbin case g₁ and the shuttle b thereby
preventing the entrance of the under thread t³ between. the said shuttle and carrier
face as the shuttle and carrier are moving in their backward direction.
The presser bar herein marked p has attached to it a presser foot p³, both of usual
construction.
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 a sewing machine the following instrumentalities viz. a rock shaft D, its
attached carrier, a shuttle therein having a beak and a loop discharger extended in
the direction of but longer than the said beak, a bobbin, a bobbin case, a needle bar
to carry an eye-pointed needle, a rotating shaft to actuate the needle, bar, and

page_text: mechanism intermediate, the said rotating shaft and the rock shaft to which to
carrier is attached to turn the said rock shaft and cause the beak of the shuttleng
travel at each oscillation through an arc of more than 180° the combination being
and operating substantially as described.
2. The shaft D and its attached shuttle carrier having arms or prongs h², h³, h², h³
and h, and the attached carrier face or segmental finger combined with a bobbin
case and bobbin, and with means to restrain the bobbin case from rotating with the
bobbin, substantially as described.
3. The rock shaft D its attached carrier having arms to engage and carry a shuttle,
a shuttle having a post in line with the centre of oscillation of the said rock shaft,
and having a beak b¹ and loop discharger 63 combined with a bobbin case, means to
restrain its rotation, and a bobbin, the latter having as its centre of rotation the
centre of the said rock shaft, substantially as described.
4. The combination in a sewing Machine of the following instrumentalities viz. : a
needle bar to carry an eye-pointed needle; a rotating shaft to actuate it; a shuttle
carrier rock shaft D; means intermediate it and the said rotating shaft to oscillate
the rock shaft for more than 180°; a carrier having a series of arms or prongs to
sustain and carry a shuttle; a shuttle having a heel, a beak, a loop discharger, and a
post 5; and a bobbin and bobbin case; the loop discharging the loop of needle
thread upon the bobbin case at a point beyond a vertical line drawn through the
centre of the rock shaft and bobbin case, substantially as described.
5. The combination in a sewing machine of the following instrumentalities viz.: a
needle bar to carry an eye-pointed needle; a rotating shaft to actuate it; a shuttle
carrier rock shaft D; means intermediate it and the said rotating shaft to oscillate
the rock shaft for more than 180°; a carrier having a series of arms or prongs to
sustain and carry a shuttle; a shuttle having a heel, a beak, a loop discharger, and a
post 5, in line with the axis of oscillation of the said rock shaft D; and a bobbin and
bobbin case, the loop discharger discharging the loop of needle thread upon the
bobbin case at a point beyond a vertical line drawn through the centre of the rock
shaft and bobbin case, substantially as described.
6. In a sewing machine, a rock shaft; an attached carrier having arms to hold a
shuttle; a shuttle having a heel, a beak b¹ and a forwardly extended loop discharger,
the point of which extends beyond the said beak; a bobbin case and bobbin, and a
carrier face attached to the carrier and extended back from the beak of the shuttle to
act upon the outer face of the shuttle between its ends, the combination being and
operating, substantially as described.
7. In a sewing machine; a rock shaft; an attached carrier having arms to hold a
shuttle; a shuttle having a heel, a beak b¹ and a forwardly extended loop discharger,
the point of which extends beyond the said beak, a bobbin case and bobbin ; and a
carrier face attached to the carrier, and extended back from the beak of the shuttle to
act upon the outer face of the shuttle between its ends, and with a spring to act
against the shuttle near the base of its beak, substantially as described.
8. The rock shaft D; its attached carrier having arms to hold the shuttle; the
shuttle having a heel, a beak 6', a slotted loop discharger, and a post 5 in line with
the axis of the said rock shaft; the face n²; the bobbin case bevelled, as at g³; the
bobbin m; means to restrain the bobbin case from rotation; the needle bar ; means
to move it; and a take-up to take up the loop of needle thread as it is discharged
from the loop discharger, the parts being combined to operate, substantially as
described.
9. The rock shaft D; its attached carrier having arms as described; and a carrier
face n² to hold the shuttle combined with a bobbin case; a bobbin ; a shuttle having
a beak, a loop discharger 63 longer than the beak and terminating near the bobbin
case, all as shown and described to discharge the loop of needle thread on the bobbin
case beyond a vertical line drawn through its centre, and a tension device substantially
as described connected to the bobbin case.
10. The bobbin case; the bobbin, and the shuttle, combined with the tension
spring 33, having feet 34, 35, and 36, and with a screw 32, the foot 34, and the

page_text: bobbin case being bevelled, all as set forth to give up the loop of needle thread
quickly, substantially as described.
11. In a sewing machine; an eye pointed needle; means to reciprocate it; an
oscillating shaft provided with a shuttle carrier; a shuttle, having a beak and a loop
discharger extended in advance of the beak, and a post 5, combined with a bobbin
case holder; a bobbin case; and a bobbin mounted on the said post, the said post
being located in line with the centre of oscillation of the said oscillating shaft to
operate, all substantially as described.
12. Á bobbin case; a tension spring having a thread pressing end and a foot to
support one part of the tension spring between its ends from contact with the said
bobbin case and provided with a concavity, combined with a tension regulating
screw, the head of which enters the said concavity thereby preventing the needle
thread catching upon the said screw, substantially as described.
13. The oscillating carrier, and shuttle therein, combined with the carrier face
secured to and moving with the carrier the said carrier face having an inwardly bent
free end terminating between the periphery of the bobbin case and the periphery of
the shuttle to prevent the entrance of the bobbin or under thread under the said face
as the carrier and shuttle are being moved backward, substantially as described.
Doted this 21st day of Amount 1007