US374662A - Sewing-machine - Google Patents

Description

(No Model.) I y2Sheets-Sheet 1.

` P. DIEHL.

- SEWING MACHINE;i No. 374,662. Patented Deo. l13, 1887f WITNEEEEE 'INVENTDR (No Model.) 2 sheets-sheet 2.

P. DIEHL. SEWING MACHINE.

N0. 374.562. Patented Dec. 13.1887.

F-IEJA-T' ANITED STATES `PATENT OFFICE.

PHILIP DIEHL, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY OF NEW JERSEY.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 374,662, dated December 13, 1887.

Application filed April 14, 1887. Serial No. 234,765.

To all whom it' may concern,.-

Beit known that I, PHILIP DIEHL, of Elizabeth, county of Union, and State of New Jersey, haveinvented an Improvementin Sewing- Machines, of which the following description, in connection with' the accompanying drawings, is a specification, like letters and gures on the drawings representing like parts.

This invention `hasfor its object the production of a light and Very rapid running sewingmachine having an oscillating shuttle contained in an oscillating carrier.

In this my invention the axis of oscillation of the carrier and the shuttle and the center of rotation of the bobbin aresubstantially'coincident with the center 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 one hundred and eighty degrees 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 upright position, and prevent the lshuttle being thrown out of the carrier by centrifugal action, the arms holding the` shuttle loosely in such manner thatl 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 at tached to the carrier between that arm which sustains the point and that arm which supports the heel of theshuttle, the shuttle herein shown having a point, and also a loop-dis chargerlonger than the point, as described in my application, Serial No. 234,764,1iled April 14, 1887, the loop-discharger being perforated for the passage of the needle, thereby enabling a shorter to be used.

My invention is shown as embodied practi' cally in connection with that class of machine represented in United States Patent No. 229,629, dated July 6, 1880. l

My invention consists, essentially, in arockshaft, D, itsattached carrier, ashuttle therein having a beak, and a loopdischarger extended inthe direction of but longer than the said beak, a bobbin and a bobbin-case, a needlebar to carry an eye-pointed needle, a rotating shaft to actuate the ncedlebar, and mechanism intermediate the said rotating shaft (No model.)

and the rockshaft, to which the carrier is attached. to turn the said rockshaft and cause the beak of the shuttle to travel at each oscillation through van arc of more than one hun- 55 dred and eighty degrees, the combination being and operating substantially as will be de# scribed.

Other features of my invention will be hereinafter described, and specified in the claims 6o at the end of this specification.

Figure l is an under side view ofa sewingmachine embodying my invention. Fig. 2 is a rear side elevation of the machine shown in Fig. v1', the frame-work .being partially broken 65 out to show the main and other shafts instrumental in operating Vthe needle-bar, shuttlecarrier, feeding mechanism, and'take-up; Fig.

3, a left-hand end elevation ofthe machine or of Fig. 2, looking at it from the side opposite 7o that shown in that figure. Figs. 4, 5, and 5a are respectively front and side elevations of the carrier. Figs. 6, 7, and 8 are respectively front and side elevations and top or plan views of the shuttle alone. Fig. 9shows afront and 75 side elevation of the bobbin Within the bobbincase.l Fig. 10 is a section of the bobbin-case alone. Fig.11,a section of the bobbin; Fig. 12,

a section in the line x3, Fig. 3, looking up, chiey to show the bobbin-case holder and its 8o support and the pin or stud on which it is permitted to turn. Figs. 13, 14, and 15 show the needle, shuttle, shuttle-carrier, bobbin-case, and bobbin in different positions, the carrierface shown in Fig. 1 being broken oft to better 85 show the manner of forming the stitch. Fig.

16 is a view of the carrier-face detached, and Fig. 17 the blank fronr which the carrier is made by forging.

The bed-plate A, the overhanging arm B, 9o the main rotating needle-bar-actuating shaft O, its cam-hub T', the take-up lever T, moved by it, the needle-bar h, carrying an eye-pointed needle, a4, the link f, connected to the crank of the shaft C and to the rock-shaft I, the feed- 95 bar K, the feed-bar-lifting rock-shaft E, having arms c- 03 and actuated from a cam, c, on therock-shaft Lth'e said cam working between the forks of an arm, c', the feed-regulating rock-shaft F, having arms e e', the lever J,the roo 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 l movementof the holder in toward and from` determinethe length of stitch, and the shuttle-carrier-actuating rock-shaft D are all as in United States Patent No. 229,629, referred to,wherein the like devices are nearly all designated by like letters, and so, also, I have shown like partsby like letters in my application, Serial No. 234,764, tiled April 14, 1887.

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, pt, of the rockshaft I, the center of which bears such relatlon to the rock-shaft D that as the rock-shaft I 1s rocked or oscillated by the link f, connected to the arm il 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 morev than one hundred and eighty degrees v(preferably an are of' over two hundred degrees) in one and then 1n the opposite 4 direction during each complete rotation of the main or operative shaft C during each complete reciprocat'ion of the needle and needle-bar; or, in other words, the beak of the shuttle moves through over four hundred degrees of a circle while the needle-bar-actuating shaft rotates once.

The shuttlecarrier H, made, preferab1y,from a blank having arms or horns h2, h3, h, h5, and he, and an ear, hl, as shown in Fig. 17, is struck up 1n a die or bent into the shape shown in Figs. 4, 5, and 5. The notch 2 in the arm h2 receives the heel 3 of the shuttle b, and the arm h3 enters the space between the beak 'b' and the loop-diseharger b3 of the shuttle b, the said arms h2 and h3 acting to support the weight of the shuttle, and by engaging the shuttle at its heel and near its beak, as shown, causes the shuttle to be moved forward through the loop of needle-thread carried by the needle n4, and then back into position preparatory to again entering a second loop of needle-thread. Y

` rying the under or second thread, t3, the said bobbin being free to be rotated by the pull of the thread upon it; but the bobbin-case g is restrained from rotation by means of a bobbincase holder, ma, composed of an arm notched at its upper end to engage a lug, gl, attached to the front of the bobbin-case. This arm has two like ears, 8, bent from it at right angles, one of which is shown in Fig. 12, the said ears fitting the reduced neck 10 of a stud, 12, depending from the bed-plate, (see Fig. 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 andmain body of the stud 12 having a pin or projection, 15, (see Fig. 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 the bobbin-case.

One side of the neck is cut away or slabbed olf, as shown in Fig. 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 beveled, as at g, as shown in my application Serial No. 234,764, so that the loop of needle-thread will be unerringly cast ofi` by the loop-discharger b and by the take-up lever T acting on the thread.

The arm h* 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, n, shown as a segmental finger attached by screws 20 to the lug or ear h, the inner side of the said face n acting to determine the position of theface of the shuttle b, a spring, 22, attached to the said lng by a screw, 23, and acting against the rear side of the shuttle substantially opposite the junction of the ,beak b and the loop-discharger b, keeping the point of the beak in just the proper position to insure its entrance into the loop of needlethread close to and without striking the needle n. The two arms hh", by extending partially across the shuttle, serve to keep the latter seated on the supportingarms h2 and h3, the said arms h5 and hovercoming all liability of the shuttle escaping by reason of its centrifugal motion or force appreciable in high speed.

rIhe inner side of the carrier-face n or finger is so shaped that the said face n2 opposite the number 24, Fig. 4, and about opposite the arm h, bears against the outside of the shuttle, thus aiding in keeping the shuttle in proper upright position to (3o-operate with the needle.

The loop-discharger b3 herein shown, as well as that in my application Serial No. 234,764, receives the loop of ,needle-thread upon it just as or a little before the point of the beak b reaches the position Fig. 4. As the loop-discharger advances from the position Fig. 14', the loop of needle-thread is spread over the bob bin-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 fullyr completed its forward movement, the loop being drawn up by the take-up between the heel 3 and the arm h'l just as the shuttle-carrier commences its re- ICO IIO

Ils

turn movement, the take-up completing its ascent while the arm hfs opposite the needlehole in the cloth-plate, the needle being elevated out of the work. The arm h2 will preferably have a heel, h1, against which may rest the enlarged heel 3 of the shuttle.

The loop discharger b3 herein shown is slotted, as at 26, and the beak b', placed at one side ofthe loop-discharger, (see Fig. 8,) is concaved, (see Fig. 8,) to form aside point to enter the loop of needle thread when the needle is in the position Fig. 13. The needle h'* descends through the slot 26 in the loop-discharger b3, so that the latter acts as a needleguard as the beak b enters the loop, and at such time the face n of the carrier or the segmental linger is interposed between the shuttleV and the under thread 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.

The feet 34 and 35 rest on the bobbin-case, and the screw 32 enters a concavity (see Fig. 10) in the spring, rotation of the screw to turn it into .the bobbin-case increasing the pressure of the upper iiat end of the tension spring 33 on the bobbin or under thread, t3.

The sharp inward bevel of the foot 34 of4 the tension-spring aids in accelerating the passage of the loop of needle-thread from the loop discharger, for between the positions Figs. 14 and 15 the loopof needle-thread is passed beyond the screw 32 and upon the said inclined or beveled foot of the tension-spring, down which it slides, and in so doing is caused to travel off the discharger I)3 very rapidly, the beveled portion of the shuttle and the bevcled foot aiding this `action very materially.

Holding the shuttle in an oscillating carrier obviates the employment of av raceway in which the shuttle slides, and consequently the shuttle is subjected to the minimum of wear andfriction. So, also, by mounting the bobbin and bobbin-case on astud or post, 5, of the shuttle in line with the center of oscillation ofthe 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 two hundred degrees during each rotation of the necdle-bar-actuating shaft C it is obvious that the beak of the shuttle travels through more than three hundred and sixty degrees of a circle, or through substantially. four hundred degrees of acircle, during each stitch, which enables me to utilize a greater proportion of the time used for each stitch for the take-up, and then the feed to operate as stated in mysaid application,Serial No.234, 764.

I have herein shown and described one wellknown form of mechanism between the shafts C and D to enable the latter to be rocked or oscillated from the former as itis rotated; but I desire it to be understood that I do not intend to limit my invention to the exact devices shown, for insteadof them I might use any other well-known or equivalent devices by which the shaft D may be rocked for more than one hundred and eighty degrees in one and then back in the opposite direction during each rotation of the shaft C.

In my application Serial No. 234,764, filed April 14, 1887, 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 center 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 isnot 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 directlyr 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 shuttlecarrier 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, v

which is of material pratical 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 g and the shuttle b, thereby preventing the entrance -of the under thread, t3, be-

IOC'

tween the said shuttle and carrier-face as the shuttle and carrier are moving in their backward direction.

The presser-bar, herein marked p, has at-.

strume'ntalities, viz: a rock-shaft, D, lits at-` tached carrier, a shuttle therein having a beak and a loop-discharger extended in the direc- 1 tion of but longer than the said beak and pointed toward the periphery of the bobbincase, the bobbin, the bobbin-case, a central stud to support it and form a center' for it about which the bobbin may rotate, a bobbin-case holder to hold the bobbin-case while the shuttle oscillates in one and then in an opposite direction about it, 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 rockshaft, 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 one hundred and eighty degrees, the combination being and operating substantially as described.

2. rIhe shaft D and its attached shuttle-car- IIO rier having arms or prongs h2, ha, h", l, and

h6 and the attached carrier-face or segmental shuttle having a post in line with the center of oscillation of the said rock-shaft and having a beak, b', and loop-discharger b, combined with a bobbin-case, means -to restrain its rotation, and a bobbin, the latter having as its center ofrotation the center of the said rockshaft, substantially as described.

4. The combination, in a sewing-machine, of the following instrumentalities, viz: a needlebar to carry an eye-pointed needle, a rotating shaft to actuate it, a shuttleecarrier rock-shaft, D, means intermediate it and the said rotating shaft to oscillate the rook-shaft for more than one hundred and eighty degrecs, 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 1oopdischarger discharging the loop of needle-thread upon the bobbin-case at a point beyond a vertical line drawn through the center of the rock-shaft and bobbin-case, substantially as described. Y

5. In a sewing-machine, a rock-shaft, an attached carrier having arms to hold a shuttle, a shuttle having a heel, a beak, b', and a forwardly-extended loop-dischargcr, the point of which extends beyond the said beak, a bob bin-case and bobbin, and va 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.

6. In a sewing-machine, a rockshalt, an

A attached carrier having arms to hold a sh iittle,

a shuttle having a heel, a beak, b', and a forwardly-extended loop-discharger, the point of which extends beyond the said beak, a bobbincase 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.

7. The rock-shaft D, its attached carrier having arms to hold the shuttle, the shuttle having a heel, a beak, b', a slotted loop-discharger, and a post, 5, in line with the axis ofthe said rock-shaft, the face n2, the bobbincase beveled as at g3, the bobbin m, means to restrain the bobbinease 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.

8. vThe rock-shaft D, its attached carrier having arms, as described, and a carrier-face, n2, to hold the shuttle, combined witha bobbincase, a bobbin, ashuttlehavingabeak, aloopdischarger, b, longer than the beak and terminating near the bobbin-case, all as shown and described, to discharge the loop of needlethread on the bobbin-case beyond a vertical line drawn through its center, and a tension device, substantially as described, connected to the bobbin-case.

9. 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 '3i and the bobbin-case being beveled, all as set forth, to give up the loop of needle-thread quickly, substantially as described.

l0. In a sewing-machine, an eye-pointed needle, means to reciprocate it, an oscillating shaft provided with a shuttlecarrer, 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 bobbi n-case, and a bobbin mounted on the said post, the

said post being located in line with the center of oscillation of the said oscillating shaft, to operate all substantially as described.

ll. 'Ihe bobbin-case and tension-spring having a thread-pressing end and feet, and a teat, 36, 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.

12. 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 bobbincase 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.

l In testimony whereofI have signed my name to this speciiieationin the presence of two subscribing witnesses.V

PHILIP DIEHL.

Witnesses:

SYDNEY A. BENNETT, L. L. BURRITT.

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