US271182A - Asslgnoe to jacob loeb - Google Patents

Description

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BMBROIDERING MAGHINB.'

No.. 2'7l182. Patented Jan.23,1883.

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(No Model.) 9 Sheets-Sheet 3.

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EMBROIDERING MACHINE. No. 271,182. Patented Jan. Z3, 1888.

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EMBROIDERING MACHINE.

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MBMBMIDERING MAGHINB. No. 271,182. Patented JmL-23,1883.

(No Model.) 9 Sheets-Sheet 6.. C. N- WURTH.

EMBROIDBRING MACHINE.

No. 271,182.A 'Patented Ja.I1 .Z3,1883.

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No. 271,182. Patented Jan.23. 1888.

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EMBROIDERING MAGHINR Non 271,182. Patented Jan.28, 1883.

NITED STATES PATENT OFFICE.

i CHARLES N. W URTH, OF GAMDEN, NEW JERSEY, ASSIGNOR TO JACOB LOEB,

VOF OHELTENHAM, AND MAX SGHOENFELD AND DAVID SCHOENFELD,

BOTH OF PHILADELPHIA, PENNSYLVANIA.

EMBROIDERINGfMACHIN.

SPECIFICATION forming part of Letters Patent No. 271,182, dated January 23, 183.

Application filed August 15, 188:2. (No model.) l.

To all whom it may concern:

Be it known that I, CHARLES N. URTH, a citizen ot' the Republic of Switzerland, and a resident of Camden, in the State of New Jersey, one of the United States of America, have invented certain Improvements in Embroidering-Machines, of which the following is a specification. l

' My invention consists of certain improve- 1o ments, fully described hereinafter, in the emluoidering-nlachine for which J. Ebneter obtained patents in France December 9,1873, and October 30, 1875, and in the United States August S, 1882, No. 262,383.

In order that my improvements may be thoroughly understood, it has been deemed best to illustrate and describe the entire machine, sundry features of which are included in the aforesaid patents.

2o In the accompanying drawings, Figure l,

Sheet 1, is a front view of the machine; Fig. 2, Sheet 2, a view, drawn to a larger scale, of one end of the machine; Fig. 3, Sheet 3, a front view drawn to the same scale as Fig. 2, portions of the machine being broken oft at intervals; Fig. 4, Sheet 4, a plan view of Fig. 3, the embroidery-frame being shown in section, and the shaft for supporting the same being removed; Fig. 5, Sheet 5, a horizontal section of the l'iattern-board and pantograph mechan- Vism,.drawu to an enlarged scale; Fig. 6, Sheet 6, a transverse section of Fig. 5 on the line l 2; Fig. 7, Sheet 7, a section ofthe embroider- 2* ing devices, Figs. S, 9, l0, and 1l, detached views of parts of the machine; Figs. 12,13, 14, l5, 16, 17, and 1S, Sheet 8, views illustrat` ing the detailed construction of parts relating to the looper; and Figs. 19, 20, 2l, and 22, Sheet 9, views relating to the detailed construction ofthe friction-clutch-aml mechanism connected therewith.

Referring to Figs. l and 3, the fabric, H, to be embroidered is stretched in a frame, H', upon pins or tenter-hooks, and the bar It and screws 3 are employed to properly stretch the said fabric. A pattern-board, D, is secured to the frame, and to this board is attached the pattern to be followed in embroidering the fabric. A pantograph-plate, S, is also secured to the frame H', upon which the wheels, hereinafter described, act to move the plate :and frame in any desired direction as the embroidering progresses, the line of the pattern being moved across the index-point I on the main frame A of the machine by the manipulation of the devices which control the wheels, as hereinafter explained.` In order to allow of this movement of the frame H' and its fabric, it is necessary that the former should be hung so that it will require a very slight effort to move it up or down, or to the right or left, or diagonally, the movement being always in the same plane. To provide for this motion I make use of a stiff tubular shaft, B, having pulleys B' B2 B3, the said shaft having its bearings on anti-friction rollers or boxes on the standards or frames A' of the machine. The shaft is preferably strengthened and stiftened by the brace-rods b' and central head, b. To the pulley B' is attached a strap carrying a weight, b3, to counterbalance theframe and its attachments. y

To the pulleys B', B2, and B3 are attached straps 5, the lower ends of which are connected by screw turn-buckles or other adjusting devices to the horizontal bar b4, which will be raised or lowered bodily and uniformly at both ends alike by the turning of the shaft B and its pulleys.

Upon each of the standards A are guidebars c, adapted to small grooved rollers at the ends of the,A rod b4, which is thus prevented from moving endwise and permitted to move up or down with 'very little friction, Figs. l and 3. The frame H' is hung to this bar b4 by rollers c' and c4, so that it can be moved freely endwise.

I prefer to journal the anti-friction roller c' to a bracket on the fra-me H', and to adapt this roller to-a rail, c", above the bar b4, and to journal the roller o4 directly to the bar b4, adapting this roller to a rail, ci', connected by ad justing-screws c6 to the frame H', so that the latter may be as level as possible. The lower edge of the frame H is steadied by the bars c", passing in front of the vertical stationary bars c.

It should be understood that the indexpointer I is to be placed in the proper position in relation to the pattern, that the pantograph apparatus is to be placed properly for acting upon the plateS, and that the embroidering mechanism is adjacent to the fabric, and the distance between one set of embroideriug devices and the next corresponds to the distance between one figure or pattern and the next similar figure or pattern on the fabric.

The tracer and pantograph are not movable upon the frame A; but thc embroidering devices can be adjusted farther apart or nearer together to adapt the machine to different designs or patterns.

I will now describe the actuating mechanism, and the pantograph and embroidering devices.

i The power is applied by a belt to the pulley (Land there is a friction clutch or coupling between the said pulley and the main drivingshaft E, so that the shaft can be stopped by operating a lever, d,.or by an automatic stopmotion, as described hereinafter.

On the shaft E there is a scroll-cam, e, having a block, 6, on its periphery, and d2 is a pivotc'd stop connected by the links d with the clutch-lever d, so that when said lever d is moved and the power disconnected the stop d2 will be moved into the path of the block 6, so as to prevent any further movement of the shaft.

As shown in the enlarged views, Figs. 19, 20, and 2l, the pulley C is loose on the shaft E, but a hub, C3, is fastened on the shaft, and is provided with levers G4, acting on guided friction-blocks C5 to move them outward against the interior of the flange of the pulley O, and cause the belt on said pulleyto rotate the hub C3 and shaft E. The conical sleeve C(i is operated by the lever d, and serves to move the levers C4 from each other and to apply the friction-blocks to the pulley, and when this sleeve C6 is retracted-the springs C7 will draw the friction-blocks G5 away from the flange of the pulley and allow the shaft E to be stopped.

It is necessary to relieve the pulley C from .friction at such a time that the block 6 will reach the stop d2, and thereby stopthe machine when the embroidering-needles are out of the fabric. I prevent the movement of the lever d, except during a small portion of the revolution of the shaft E, by a projection, d6, at the side of the said lever d, which projection, when the machineis ruiming, is adjacent to the edge of the cam e. In this edge there is a recess or notch, d?, which extends as far as the arrows 1 indicate in Fig. 2l. When the notch is at the projection d6 of the lever d the latter can be moved, but at no other time.

The several parts are so arranged that after the projection enters the notch the block 6 will, as the shaft revolves, comein contact with the stop d2 and be caught by its spring-latch.

The block d8, which is on a spring and forms part of the periphery of the cam e, is raised by Figs. 5 and 6.)

runnin g upon the projection d6 as the parts are arrested. This block in its normal position partially fills the notch dT, so as to prevent the lever d being moved when the stop 6 has arrived too close to the end of the stop d2.

It should be stated here that as far as the above-described stopping devices are concerned an ordinary plain pulley might be used in place of the cam; but as the latter is required for other purposes I have availed myself of its presence to perform the above-described duties. y

The pantograph device comprises the appliances for giving such motion to the traversing frame and its fabric that the line of the pattern on the pattern-board D will, as the said pattern moves with the frame, always coincide with the stationary index-point I, Fig. 5. As the immediate means of traversing the frame, I make use of two small. steel wheels, e c2, with narrow edges, which are roughened or milled, the wheel e being the actuating powerdriven wheel for bearing against the front of the plate S of the frame, and the opposite wheel, c2, being simply a pressing-wheel (not power-driven) for keeping the plate S against the-wheel e', as will be seen hereinafter. These wheels are journaled to jaws c3 e4 on transverse shafts c5 e in head-stocks e" e8 upon the front frame, A, and back frame, A2, respectively. (See Thereis a center screw, 8, to resist end-pressure upon the shaft e5, and a spring, 9, to apply end-pressure against the rear end of the shaft e, thus causing the wheel e2 to force the pantograph-plate S against the wheel e.

Thejaws and shafts can be turned simultaneously, as hereinafter described, so that the` wheels c e2 shall always revolve in the same plane with relation to each other, and to the wheel e a continuous and slow revolving motion is given. Hence the plateS and the embroidery-frame will be moved up or down, to the right or left, or diagonally, according to the direction of the planes in which the wheels revolve, for lthe plate S will always be moved in the'same direction in which the narrow edge of the wheel e' is rotating.

To give the desired rotary motion to the wheel c a worin-wheel, f, is secured to the shaft of the Wheel e; or there may be intermediate gear-wheels within the jaws, as shown by dotted lines in Fig. 5, and there is a worm, 10, (see Fig. 6,) and a gear-wheel, f', driven by a pinion,f2, loosely mounted on the shaft c5, and this wheel and pinion f2, which has two sets of teeth, receive motion from the main shaft E, through the train of gearing f3 f4, short shaft, and bevel-wheels f5 f6.

A shaft, g, extends longitudinally over the frame A, and another shaft, g', over the frame A2, and these are connected together by gears h h2 h3, Figs. 1, 3, and 4, so that the two shafts will move in the same direction and at the same speed.

On the shaft of the index-pointer I there is IOO a crank-handle, 7c, and a bevel-wheel, 7c', on the shaft gears into asimilar wheel, 7a2, on the shaft g. These wheels having the same' number of teeth, the shafts gg will be turned at the same speed as the handle.

On the shaft e5 of the jaw e3 there is awheel, Z, with inclined teeth, and on the shaft g is a similar wheel, L', and there are bevel-gears lZ 1.3, by which the shaft g' is geared to the shaft c6 of the jaw e4. l/Vllen the crank-handle 7c is horizontal the jaws e3 and el and the pantograph-wheels e and e2 Will lie horizontal, and hence the wheel e will move the plate S and embroidery-frame horizontally, and a horizontal line on the pattern will move along' behind the index-point I, and when the handle is in clined or vertical the wheel c' will be turned and cause the plate S and frame H and cloth to move in the direction or inclination ot the handle. Hence the attendant has to turn the handle-crank in the direction of the line of the pattern or figure, and the wheel c will move the plate S, embroidery-frame, and pattern-plate to cause the pattern-line to move along against the index-point I, and hence each line of embroidery will correspond to the line of the pattern, and the most complicated pattern can be followed, and the lines of pattern and embroidery can cross each other or be led in any direction, and the line of chain-stitchinghwill be regular and progressive from one stitch to the next in the most perfect manner, both as to the length of stitch and its formation.

There is a shaft, y, with a cam, g4, adjacent to the spring 9, Fig. 6, and an arm on the shaft is connected by a link, g5, to the lever g, Fig. 2, so that by moving this lever the spring 9, shaft e, and wheel e2 will be moved back and the plate S liberated, so that it will not be moved by the rotation of the wheel e', the trame and fabric being thus at liberty to be moved by hand in adjusting the same before the embroidery is commenced.

I will now describe the sets of embroider- -ing devices and their connection with the pani tograph device.

As before remarked, there may be any desired number of embroidering devices; but as they are all alike 1 will limit my description to one.

The needle t', Figs. 7 and S, has a hook like that of a crochet-needle, and is'fastened in the end of the needle-bar 15, which can reciproca-te in the tubular spindle 0, which has its bearings Ain a head-stock, o', secured to the bed A, and held in position 'by a clampingscrew, 21 the head of which is within an undercut slot in the top of said bed A. The needle-bar 15 and tubular shafto will turn together, owing to a cross-piece, il", on the needle-bar being adapted'to a slot in the tubular shaft; or any other equivalent device may be used for permitting the needlebar to reciprocate in the4 tubular shaft, but compelling it to turn therewith; and the shaft g is geared to the tubular spindle by Wheels a a', so that the needle will be oscillated at the same time and in thesame proportion as the tubular spindle 0 and jaw and roller e, to keep the hook of the needle in the proper position to hold the loop ofthread as the fabric is moved between the respective stitches.

Upon the shaft E there are cams m, which give motion to the arms R R3 and rock-shaft R', Iand R2 are arms upon this rock-shaft to give end motion to the needle-bar 15 and needle t' at the proper time to thrust the needle through the fabric, and then withdraw it with the loop of thread. The arms R2 are made in two parts, connected by a bolt passing through a slot in one of the parts,- as shown in Figs. 7 and 9, so that the movement of the needle of any embroidering device maybe discontinued by depressing the upper part of the arm out of contact with the collars on the needle-bar 15.

A bracket, o2, projects from the head-stock o', and in this bracket slides the tubular presser r. The needle i passes through this presser t, and there Vis a spring, r', to force the same toward the fabric H.

The rock-shaft t is provided with an arm, t', andV upon the shaft E is acam, t2, which, in connection with the spring last referred to, gives a vibrating motion to the rocki-shaft t at the proper time; and there are forked armst3 on this rock-shaft-one for actuating each presser, to draw back the same from the fabric after the needle, with its loop of needle-thread, has been retracted into the said presser. Each thread is on a spool. Each spool p is supported upon a stud, p', and has a frictionplate, 75, to control the tension ofthe thread.

p2 is a spring-eye for the thread to run through, and the thread passes into a tubular rotating looper, q, which has its bearings in the head-stock q', the latter being adjustable on the frame A2, so that the axis of each rotating looper q can be placed in line with each crochet-hook t'.

There is a small plate, q2, atthe end of the head-stock q', and this plate has a hole forthe passage ot the hooked needle t', Fig. 12.

The fabric rests against this plate while the needle passes through it, and the plate is in vertical dovetailed grooves in the end of the head-stock q', (see Figs. 12, 14, and 18,) so that it can be drawn up and taken out to facilitate the introduction of the thread through its central hole. These stitch-plates can be changed, when necessary, to accommodate larger or smaller threads. The levers Vor turnbuckles g4 hold these plates down when in place, and can be turned aside to allow for their removal.

Each looper q is provided will] a neck, into 'which enters the edges of a forked plate, gf#

held by a screw tothe head-stock q', (see Figs. 12, 14, and 15,) so as to hold the looper in place `and permit it to be withdrawn by loosening the screw and raising this-plaie.

As before stated, the shaft g is rotated at the same time as the shaft g by the operator 4 arrasa as he moves the handle 7c, and this shaft g', through the medium of the wheels 31 and 32, turns the loopers q and gives to the same their proper positions in relation to the hooks of the crochet-needles t', so that the latter will catch the threads. It is necessary also to give to the loopers q a partial or complete rotation for each stitch, so that the respective loopers partially wind or wrap the threads around the needles above the hooks, and thereby insure the catching of the threads by the hooks and the drawing of said threads through the fabric. I employ the same shaft, g', for giving this partial rotation to all the tubular loopers q by communicating to the shaft g an end motion for each stitch. This end movement is given by the lever Q5 and groove 35 in the scroll-cam c, which has been previously referred to, the lever g5 having at one end a pin or roller adapted to the groove, and at the other end a rod, Q6, which is in line with the shaft g', and is connected thereto by a balland-socket joint, 37, the latter permitting the rotation of said shaft g while it reciprocates.

The wheels 31, having inclined teeth, are secured to the shaft g', and hence reciprocate endwise with it and oscillate the loopers q; but the said shaft g slides through the wheel Z2, and there is either a feather on the shaft or a cross-piece, 40, lacting against the parallel arms 41, which project from the tubular shaft of said wheel l2, so that the wheel will be turned with uniformity as the shaft g is rotated, but will not be influenced by the reciprocating motion of said shaft.

Near the outer end of the shaft g there is a cross-piece, 44, Fig. 4, on the said shaft, sliding upon the parallel arms ofthe fork upon the short portion of the shaft carrying the wheel h3, so that the shalt g may reciprocate end wise freely, but will receive its rotating motion from the wheel h3, for the purposes before described.

To stop the machine automatically I employ the following devices: The shaft u, Figs. 2 and 4, is rotated continuously by the belt c', passing round the pulley 51 and round apulley on the driving-shaft E, and the lever d, before mentioned in describing Figs. 19, 20, and 21, extends to this shaft'o, where it terminates as -a fork adjacent to a hub, 50, attached to the said shaft, so as to slide endwise ou the same, but turning therewith. The pulley 51 has radial inclines or cams on its side, which are adapted to similar inclines at the end of the hub 50, and this pulley 5l is between a collar on the shaft c and the said hub. The shaft o can be revolved freely by the belt; but if the shaft is stopped the inclines on the hub and pulley cause the latter, as it revolves, to force the hub endwise on the shaft, move the lever d, and release the driving-pulley (l. At the same time the stop cl2 is moved into the path of Athe projection 6 on the cam c, and the machine will be stopped in the manner described above. The lever d, however, can only move when the notch l? is opposite to d6, the same as when moved byhand,Figs. 19 and 21. This shaft t: and the whole machine are stopped when any one of the threads breaks. This is effected through the medium of the arms v2, which hang loosely on the shaft v3, each arm having a linger, o4, resting upon the thread, as shown in Fig. 7. If the thread fails to support the finger, the latter falls and the stoparm v2 drops into the path of the cam 56 on the shaft o, and hence arrests the movement of said shaft c and brings into action the beforedescribed stopping mechanism.

An arm, 57, Figs. 2 and 4, situated conveniently for the attendant stationed at the .pantograph device in front of the machine, is

pivoted to the frame, and connected to one of the arms v2 through the medium of a link connected to an arm on the shaft 03, to which the said arm Q12 is secured, so that the latter may be operated by hand to stop the machine.

Inorder to raise the' lingers o* and hold them and the arms o2 away from the influence of the cams 56, I provide arms 60, F-ig. 7, which extend from the shaft o3 and have a wire, o6, passing from one arm to the other beneath the 1ingers v4, Fig. 4, and an arm at the end of the shaft o3 is connected by a link, 6l, to the handlever 62, Fig. 2, by means of which the said shaf o3 can be turned to move the arms 60 and ift the said lingers v4 from the threads.

It is important to be able to adjust each needle without having to disturb the drivingwheels appertaining to the same, and to change the needles and replace any that may be broken. The cross-block im, Fig. 8, on the needle-bar is so clamped in place that the hook of its needle stands in the same direction as the hooks ofthe other needles, and the collars and jam-nut @'11 can be screwed endwise on the needle-bar to adjust the needle-stock and needle endwise.

It is important to be able to draw the hooks of the needles entirely into the pressers r, so that they will bc out of'the way of the fabric while it is being stretched in the frame. I therefore employ a roller, o, Fig. 10, on the crank-pin 010 of the arm R3, and provide a clutch, 012, by which the roller can be slipped endwise and held either in position for the cam m to act upon such roller or out of the way of the cam. When the roller o1l is thus drawn back the arm R3 and the rock-shaft It can be swung by hand until the crank-pin o1 touches the cam m. This will give to the IOO IIC

arms R2 and needle-bars an additional back for acting on the said bar, and thereby forcing the wheel against the plateI and the plate against the wheel e', all substantially as set forth.

2. The combination of theA embroideringframe and its plate S, the shaft e5 and its p'antograph-wheel e', and the shaft e6, carrying the wheel c2, with mechanism whereby the said shafts are geared together, so that both wheels shall always revolve in the same plane, with mechanism for rotating thewheel e only, the wheel e2 deriving its rotating movement from the plate, substantially asspeciiied.

3. 'lhe combination of the shaft e6 and the wheel e2, journaled thereto, the spring 9, secured to the frame and loosely connected to and bearing against the said shaft, and a cam, g4, for retracting the shaft through the medium of the spring, substantially as described.

4. The combination, in an cmbroideringmachine, of the following elements, namely: first, aframe carrying the fabric to be embroidered, and having at one end only a metal plate, S; second, mechanism whereby the said frame is suspended and permitted to be moved in any direction in the same plane; third, a single pantograph-wbeel and mechanism for revolving the same continuously, and causing it to act on the plate and traverse the embroidery-frame 5 fourth, a shaft carrying an index-pointer directed to the pattern-board5 and, ifth,mechanism whereby the said indexshat't is caused to determine the planein which the pantograph-wheel shall revolve, all substantially as described.

5. The combination ofthe shaft B, its counter-balances, pulleys B2 and B3, and the bar b4, connected to the said pulleys by bands 5 5,

Y with the embroidering-frame having a roller,

o', bearing on a rail on the frame, and an adiustable rail c5 bearing on a roller c4 secured 3 7 b 7 5 to the frame, all substantially as set forth.

6. The combination of the tubular shaft o, the needle-bar 15, adapted thereto, the shaft R', its arm R2, and arms R R3, with the drivingshaft E and cams thereon for impartingapositive reciproca-tin g motion to the needle-bar through the medium of the arms, all substantially as set forth.

7. The combination ofthe arm R3 on the shaft R', and the cam on the shaft E for operating the said arm, with a roller, 011, made l adjustable on the pin 010 of the said arm, substantially as specified.

8. The combination of the head-stock q and its tubular looper with the removable plate q2,

having a hole for receiving the crochet-needle, and with a device forret-aining the plate in place, substantially as described.

9. The combination ofthe head-stock q and its tubular looper, grooved at one end,with the detachable plate Q6, which is adapted to the groove of the looper, and the removal of which permits the withdrawal of the saidlooper from the head-stock, substantially as specified.

l0. Thecombinatiominanembroidering-machine, of a series of tubular loopers, a stoppingshaft, e, com mon to the whole of the loopers, and a cam, 56, on the said shaft for each looper, with a lever adjoining each looper, and having one arm o2 adapted to a shoulder on the cam, and anger for bearing on the thread, i

substantially as described.

1l. The combination of the driving-shaft E of an embroideringinachine, a drivin g-pulley, and braking or clutching appliances connected therewith,with a lever for applying the brake, and a pulley,secured to the shaft and having a recess for receiving the lever and for determining when, during one revolution of the shaft, the lever can be used as a medium for withdrawing the braking or clutching mechanism from the driving-pulley, allsnbstantially as set forth.

12. The' combination of the said recessed wheel or pulley on the driving-shaft, and a block thereon, with a brake orclutch lever, and a stop so connected therewith that the stop will be moved Within range of the block when the lever withdraws the brake or clutch, substantially as set forth.

13. The combination of the driving-shaft, the recessed wheel or cam thereon, the brakelever, and a block, d8, applied to the pulley or wheel where the recess occurs, substantially as described. y

14. The combination of the stop-shaft n, a power-driven loose pulley, 5l, having a hub with inclined teeth, a sleeve, 50, with corresponding inclined teeth on the said shaft, a spring for maintaining the hub in gear with those of the pulley, and the brake-lever actuated by the sleeve, all substantially as spect fied.

In testimony whereof I have signed my name to this specification in the presenceof two subscribing witnesses.

CHAS. N. WURTH.

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