US456734A - schultz - Google Patents

Description

(No Modell) s sheetssheet 1. L. SCHULTZ.

QUILTING MACHINE. No. 456,734. Patented July 28, l1891.

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Patented July Z8, '1891.

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L. SCHULTZ. QUILTING msnm;v

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QUILTING MACHINE.

Patented July 28, 1891.

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L. SGHULTZ. l QUILTING MACHINE.

No. 456,734. Patented July 28, 1891.

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QUILTING MACHINE. No. 456,734. Patented July Z8, 1891.

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UNITED STATES PATENT OEEICE.

LOUIS SOHULTZ, OF NET YORK, N. Y., ASSIGNOR T() THE EXCELSIOR QUILTING COMPANY, OF SAME PLACE.

QUlLTlNG-IVIACHNE.

SPECIFICATXON forming part of Letters Patent No. 456,734, dated July 28, 1892i.

Application filed May 29, 1889. Serial No. 312,601. `(No model.)

To all whom it may concern:

Be it known that I, LOUIS SCHULTZ, of New York, in the county and State of New York, have invented a certain new and useful Improvement in Quilting-Machines, of which the following is a specification.

I will describe a quilting-machine embodying my improvement, and then point out the novel features in claims.

In connection with this application reference may be had to my application numbered serially 326,671.

In the accompanying drawings, Figure l is a back View of a machine embodying my improvement. Fig. 2 is a horizontal section of the same, taken at the plane of the dotted line Fig. l, certain parts being shown in section and certain other parts being broken away, the better to exhibit the important features. Fig. 3 is a plan or top View of one end portion of the machine, certain parts being removed and certain other parts being shown in section. Fig. 4t is a transverse vert-ical section taken as indicated by the dotted line1 y y, Fig. 3, and looking in the direction indicated by the arrow which is adjacent to this line.

Fig. 5 is an end View of the machine with the driving-pulleys and the appurtenances thereof removed. Fig. G is a detail view. Fig. 7 is a transverse section illustrating certain parts and a ratchet mechanism which maybe used in connection therewith. Fig. 8 is a front view of certain parts and this ratchet mechanism. Fig. 9 is a diagram illust'ating the kind of work which may be performed by this machine. Fig. 10 is an inverted plan of one end portion of the needle-bar and needles. Fig. ll is a detail, partly in section, through the line ,e .e of Fig. l2, showing the connection between a certain shaft and the carriage. Fig. l2 is a detail, partly in section, through the line e e of Fig. ll. Fig. 13 is an inverted plan View of an arm and its connections.

Similar letters and numerals of reference designate corresponding parts in all the figures.

A designates the bed of the machine. It may be supported on legs A or in any other suitable manner. On this bed A is mounted a table A2, the latter being slightly elevated.

B B2 designate two side frames secured to the table A2 by bolts or other means, and occupy parallel positions. Between these side frames is secured a cross-bar or stretcher B3.

C designates the needle-bar. It has secured to it a series of needles C, and these are arranged in two rows, the needles of the second row being behind those of the first row and opposite the spaces between those of the first row, as may be readily understood by reference to Fig. l0.

The needle-bar is provided with a number of upright rods c, which work vertically within brackets I), attach ed to the front of the bar B8.`

The rods c are connected at the upper ends by links c to arms c2, affixed to a rockshaft C2. This rock-shaft imparts a vertically-reciprocating motion to the needle-bar and needles. The shaft has aflixed to it other arms c3, which are connected by links ct to rods c5, which are connected to a presser-foot bar. The rock-shaft is oscillated by means of a rod O3, which derives motion from a crank C4. This crank is upon the shaft `l) of the machine.

E designates the race-bar of the shuttle mechanism. This mechanism may be of any desirable construction and needs no special description.

lIt will be understood that in the present example of my invention the needles haveno motion other than a vertically-reciprocating motion and the shuttles have no motion other than that necessary to coact with the needles.

In the present example of my invention the fabric to be quilted is fed lengthwise beneath the needles, and is also moved laterally. It is fed longitudinally by means of feed-rollers F F2, supported by a carriage G G2 G3. The feed-roller F is journaled in the side frames G G2 of the carriage. This carriage consists of two side frames G G2 and rods G2, securing the side frames together. This carriage is free to move in any direction in a horizontal plane. As shown, its side frames G G2 have secured to them rollers R. These rollers R extend widthwise of the machine, parallel with the needle-bar, and are shown as journaled in brackets fastened to the lower extremities of the side frames. The rollers R rest upon pairs of rollers R2, which extend forwardly and backwardly of the machine, and are journaled in brackets secured to the bed A of the machine. lt will be readily understood that the rollers R may roll upon the 5 rollers R2 in the direction of the axes of the latter, which enable the carriage to move backwardly and forwardly, and that the rollers R2 will rotate under the rollers R to enable the carriage to move laterally, or, in other Io words, in the direction of the length of the needle-bar. The roller F2 is journaled in levers G4, which are fulcrumed between their ends by pins or bolts g to the side frames G G2 of the carriage. At the rear ends the levers G4 are Yconnected to springs G5. The latter are secured by screws G6 to upright bars fastened to the side frames of the carriage. The springs force rthe roller F2 with greater or less pressure against the roller F. The fabric to be quilted is at first rolled on a roller R. It is drawn thence over an apron P beneath the needles by means of the feedrollers. course connected with the carriage, so as to move with it. The feed-rollers F F2 are geared together by gear-wheels f, aiiixed to their journals at one end. The feed-roller F has afiixedto itagear-wheelf2. The gear-wheel. f2 derives motion from a gear-wheel f2, affixed 3o to a shaft F. The shaft F is supported at one end in the side frame G2 of the carriage. The shaft F is not intended to partake of the lateral movement of the carriage. Therefore there must be a relative sliding movement be- 3 5 tween the carriage and the shaft F. The gear-wheel f3 is to be secured to the shaft F by means of a spline or feather and connected to the bearing of the carriage receiving the shaft F, so that said gear-Wheel will move 4o with the carriage and slide along the shaft F for this purpose. The shaft F is connected by a universal joint f4 to a shaft Ff. This shaft F'1L is supported in abearing f5, which is secured to the bed A of the machine. The universal joint between the shafts F and F4 provides for the movement of the carriage forwardly and backwardly. Owing to the sliding connection of the shaft F with the carriage and with the gear-Wheel f2, carried 5o by the carriage, and the connection of the shaft F with the shaft F4 by the universal joint f4, provision is afforded for the movement of the carriage in any and alldirections in a horizontal plane without interferin with 53 the transmission of rotary motion to the feedrollers.

The shaft F4 has affixed to it a gear-wheel f6. This derives motion periodically from a toothed segment f7, affixed toashaft F5. The 6o shaft F5 is supported in a bearing aflixed to the bed A. 'lhis shaft F5 has affixed to it a gear-wheel f2?, that engages with agear-wheel fs, aflixed to a shaft H, journaled at one end in abracket 7L, affixed t0 the bed A and journaled at the other end in the side frame B2 of the machine. The shaft F5 has affixed to it a bevel gear-wheel f, which engages with a The roller R and the apron P are of lbear against the top wall of the grooves.

bevel gear-wheel f12, affixed to the upright shaft Ff. The upright shaft FG is journaled in a bracket f 10, erected upon the bed A. The shaft F6 has affixed to it a worm gear-wheel fm. This derives motion from a worm f 14, aflixed to the driving-shaftD. The shaft F5 therefore moves constantly with the driving.

shaft D; but it transmits motion to the shaft F'1t and thence to the feed-rollers only periodically, owing to the fact that no motion is transmitted from the driving-shaft to the shaft F4, saving only at the brief periods when the toothed segment f7 engages With the gear- Wheel f6.

On the shaft FLl there is affixed a lock-wheel fw. This coacts with a stop flange or diskfg, aiiixed to the shaft F6. The stop flange or disk f9 is circular in form,but has a notch or opening in its periphery. Except when this notch comes opposite the lock-Wheel fl, the stop iiange or disk engages with the lockwheel]015 and holds the latter against rotation. Thilo the shaft F4, carrying this lock-wheel, is thus held against rotation the feed-rollers are precluded from rotating. One end of the notch or opening in the stop iiange or disk comes opposite the lock-wheel]215 just before one end of the toothed segmentf7 enters into engagement with the gear-wheel f of the shaft F4, and the notch or opening is not carried beyond the lock-wheel until after said toothed segment has gone out of engagement with the wheel f6. It follows, therefore, that the stop fiange or disk locks the shaft F4 and the feed-rollers at all times, except when the toot-hed segment f7 engages with the wheel]6 to rotate said shaft F4 and the feed-rollers.

Having now described the mechanism by which rotary motion is imparted to the feedrollers and explained the motions which are imparted to the carriage, l will now give a detailed explanation of the means which serve to produce the motions of the carriage. I l2 designate two upright shafts journaled in brackets yi, secured on the table A2. On these shafts are affixed bevel gear Wheels z" i2. These shafts I l2 have also affixed to them cranks i3, which enter holes in arms 4, that are affixed rigidly to the side frames G G2 of the carriage. The cranks i3 are not fixedly secured to the shafts l l2; but they are fastened to blocks 5, which slide in grooves G in disks 7. The disks 7 are secured to the shafts I l2. Their grooves G are open at the under side and extend diametrically across them. The czanks are madein the form of screws or bolts which engage with tapped holes in the blocks 5 and extend through the blocks and On these screws or bolts forming the cranks are rollers S, and these rollers enter and turn freely within the holes in the arms/4. It will readily be seen that by turning the screws or bolts 5, forming the cranks, so as to unclamp the blocks 5, the blocks may be shifted so as to vary the eccentricity of the bolts forming the cranks relatively to the axes of the shafts IOO I I2. When the screws or bolts have thus been adjusted, they may be turned so as to clamp the blocks again and then will be secured in the new position. By adjusting the cranks in this manner they will be made to describe a larger or a smaller circle when the shafts I I2 are rotated. The bevel gearwheels t" t2 of the shafts Iv I2 engage with bevel gear-wheels i, affixed to a shaft I, journaled in bearings in the side frames B B2. The shaft I rotates the shafts I I2 in unison. Gbviously as the shafts I I2 rotate their cranks t3 will move the carriageina circle. The work will therefore be moved in a circular line beneath every one of the needles. .There will result a number of circles of stitches, as represented in Fig. 9. The threads may be carried between each two adjacent circles produced by the same needle, as represented by the full lines in Fig. f). The manner in which this can be done will appear hereinafter.

Let me now explain the manner in which rotary motion is imparted to the shaft I, whereby the upright shafts I I2, which move the carriage, are rotated. It will be seen that there is affixed to the shaft I a bevel gear-wheel tl. This bevel gear-wheel derives motion from a bevel gear-wheel t7, affixed to a shaft I4, journaled in bearings afhxed to the table A2. This shaft I4 is driven by threads I5, carried by the shaft D. The threads I5 of the driving-shaft engage with a worm-wheel I, affixed to the shaft I4. The threads I5 in effect constitute a cam which intermittently rotates the shaft I and at other times locks it, and which therefore periodically moves the carriagein a circular path and then holds it stationary. One thread at the beginning l extends spirally around the shaft D for about a quarter of the circumference, and then at 2 extends in a plane at right angles to the axis of the shaft about three-quarters of the way around the circumference, and at the i extremity extends spirally for about aquarter of the circumference of the shaft. The spirally-extending extremities l and 3 are of the same pitch, parallel and opposite one another. Beyond and parallel with these is a spiral. thread-segment at, extending about a quarter around the circumference of the shaft. The construction of the threads may best be understood by reference to Fig. I.

In Figs. 7 and 8, I have illustrated a slight modification ofthe mechanism forimparting motion to the carriage. On the shaft D, between the female clutch-piece J l and the adjacent side frame B2 and the adjacent side frame G2 of the carriage, is mounted an eccentric M. To this is fitted a strap connected with a rod M. rlhe rod M is pivotally connected to a lever M2, mounted loosely upon the shaft I, the latter being continued considerably beyond the side frame B2 to admit of this. On the shaft I is affixed a ratchet- Wheel M3. A pawl M4 is pivotally connected to the lever M2 and engages with the ratchetwheel M3. When the eccentric M oscillates the lever M2, it causes the pawl to intermittingly rotate the'ratchet-wheel and to thus rotate the shaft I intermittiugly. The shaft in this manner therefore receives the same motion that would be transmitted to it by the thread I, the wheel I, the shaft I4, and the bevel-wheels il i, previously described. These parts, which I have just explained in connection with Figs. 7 and 8, therefore form a mechanism which maybe substituted for the parts in the other figures which I have just mentioned. Astoppawl M5 prevents the ratchet-wheel Ms from rotating in the Wrong direction. The shaft I has affixed to it a brake-Wheel MV. Over this passes a brakestrap M7, which at the ends is fastened to brackets secured to the bed-piece A. At one end the strap has ascrew which passes over the corresponding bracket and has applied to it beneath the bracket a nut. By adjusting the nut the tension of the brake-strap may be varied.

I have now explained the motions of the feed-rollers and the movements of the carriage necessary for the production by each needle of a circle of stitching. I will now describe a mechanism whereby the operation of the needles and shuttle will be temporarily suspended to enable the fabric to be fed a cert-ain distance preparatory to the quilting upon it of another set of circles. This suspension of the function of the operation of the needles and shuttles is for the purpose of enabling the fabric to be fed the distance indicated by the full lines extending between the dotted circles in Fig. 9. On the shaft F5 are twin cams J J2` These operate in conjunction With bowls arranged upon a sliding plate J. This sliding plateJ is connected by a link j with an arm J3, affixed to a rockshaft j', which is journaled in brackets or stands erected upon the bed A. The rock-- shaft has affixed to it arms J 4, which are provided vvith bowls or rollers entering a circumferential groove in a sleeve J5, which fits upon the shaft D. This sleeve is free to be moved lengthwise of the shaft D; but it is locked to rotate with the shaft D by means of afeather or spline. This sleeve has affixed to it one part of a clutch. In the present instance it is shown as having the female part J Gsecured to it. The other part J7 of the clutch is secured to the shaft D. The clutch may be of any suitable construction. Inthe present instance the female part consists of an internally-conical flange, and the male part is eircumferentially conical to engage with said flange. The male part is shown as being provided with a projection j, that enters a groove in the` female part when the two parts of the clutch engage, and which will encounter the shoulder at theend of this groove to prevent any improper slipping between these two parts. Lest the purpose of this clutch is not apparent, I will explain that whenever the parts of the clutch are disengaged the move- IOC IIS

ment of the carriage in a circular path will be terminated and the operation of the needles and shuttles will be suspended. As the feed-rollers are, however, rot-ated through the driving-shaft D, that will continue rotating to feed the fabric. The feed then produced is the feed from the front to the back of the machine, which is indicated by the straight full lines in Fig. 9. It will be understood that the cams J J2 effect the disconnection of the shaft D from the driving-shaft D once in every rotation of the upright shaft F6, Vwhich'carries the cams. ToV one of the arms J4, which serves to effect the shifting of the female clutch J, is pivotally connected a rod K. The rod K is provided with brake-pads K2 for acting one at a time upon a flange K3, with which the shaft D is provided. This rod K is pivotally connected to one end of a lever K4, which is fulcrumed between its ends to a stud K5, erected on the table A2. The lever K4 enters an eye extending from a collar KG, which loosely surrounds a bolt K7, sliding in a bearing K8, affixed to the table A?. A spiral spring K9 surrounds this bolt. At one end .this spring rests against the bearing K8 and at the other end against a cross-pin Klo, which is inserted in the bolt.

The spring tends to move the bolt toward the flange K3. `When the lever K4 is oscillat-ed in that direction in which it is oscillated when the female clutch-piece is moved into engagement with the male clutch-piece, the lever moves the collar KG along the bolt, so as to compress the spring K9, and at the same time the brake-pad K is moved into contact with the flange K3. Vhen the female clutchpiece is disengaged from the male clutchpiece, the rod K is moved in such direction as to withdraw the brake-pad K from the flange K3 and move the brake-pad K2 into contact with said flange. The rod K will also at this time oscillate the lever K4, so as to cause the latter to move the collar KG toward the flange K3. This movement of the collar will leave the spring free to force the bolt K7 into a i hole in the flange to positively stop the shaft D. The brake-pads are for the purpose of keeping the shaft D under control, and the brake-pad K2 is designed to gradually arrest the motion of said shaft before the bolt engages with it. It will be seen that the driving-shaft D is provided with fast and loose pulleys and a hand-wheel to adjust the shaft by hand when necessary. The shaft D has loosely mounted upon it an arm L, carrying a pawl L', operating in conjunction with a ratchet-wheel L2, affixed to the shaft D, so that said part D and the parts deriving motion from it can be adjusted by hand.

That I claim as my invention, and desire to secure by Letters Patent, is-

1. In a sewing-machine, the combination of a carriage for moving the material to be stitched in a circular or a similar path, mechanism for causing the requisite movement of the carriage, feed-rollers supported by the said carriage, mechanism for operating them so as to remain stationary during the movenient of the carriage and to rotate while the carriage is at rest, and a series of needles arranged in two rows, substantially as specified.

2. In a sewing-machine, the combination of a carriage, feed-rollers j ournaled in said carriage at the front and rear to sustain the material to be stitched, mechanism for moving the carriage in a circular or a similar path, mechanism for holding the feed-rollers stationary during the said movement of the carriage and for rotating the feedrollers when the carriage is at rest, and a series of needles arranged in two rows, substantially as specified.

3. In a sewing-machine, the combination, with a series of needles arranged in two rows, of a carriage, mechanism for moving the carriage in a circular or a similar path,feedrollers journaled in said carriage, a shaft journaled ina stationary part of the machine for transmitting motion to the feed-rollers, a universal joint between the feed-rollers and said shaft, a gear-wheel on said shaft, and a toothed segment carried by a rotary shaft and engaging periodically with the said gearwheel to rotate the feed-rollers, substantially as specified.

t. In a sewing-machine, the combination, with a series of needles arranged in two rows, of a carriage, mechanism for moving the carriage in a circular or a similar path, feedrollers journaled in said carriage, a shaft journaled in a stationary'part of the machine for transmitting motion to the feed-rollers, a universal joint between the feed-rollers and said shaft, a gear-wheel on said shaft, a toothed segment carried by a second shaft, a lockingwheel on the firstementioned shaft, and a stop flange or disk having a notch in its periphery and carried by a third rotary shaft, the notch of said stop flange or disk being opposite the locking-wheel on the first-mentioned shaft when the toothed segment is in operation, substantially as specified.

5. In a sewing-machine, the combination, with a series of needles arranged in two rows, of a carriage, feed-rollers journaled in said carriage, mechanism for rotating the feed-rollers at intervals, cranks for movingfthe carriage in a circular path, a driving-shaft, and a main shaft connected by a clutch wit-h the driving-shaft and imparting motion to the cranks which move the carriage, substantially as specified.

G. In a sewing-machine, the combination, with a series of needles arranged in two rows, of a carriage for moving a fabric in a circular or a similar path, said carriage having cylindric rollers journaled to it, and a bed having cylindric rollers journaled to it, arranged at right angles to the said rollers of the carriage, substantially as specified.

7. In a sewing-machine, the combination, with a series of needles arranged in two rows, of a carriage movable in a circular or a simi- IOC I ro` lar path, feed-rollers journaied in the carriage, a horizontal shaft for imparting rotary motion to the feed-rollers, a rotary segment for driving this shaft, a driving-shaft,ainain horizontal shaft for eifecting the saidinoVement of the carriage, a clutch between the last-mentioned shaft and the driving-shaft, and an upright shaft rotated by the drivingshaft, intermittingly locking and unlocking With the shaft which imparts the rotary m0- tionto the feed-rollers aud for clutching and unelutclliingr with the driving-shaft the said main shaft and effecting the movement of the carriage, substantially as specified.

8. In a sewing-machine, the combination, with a series of needles, a carriage for moving a fabric in a circular or similar path, and feed-rollers journaled in said carriage and operated so as to remain stationary during,1 the movement of the carriage and to rotate While the carriage is at rest, of the shaft D,

the shaft D', a clutch between these shafts, a lever for moving` one of the clutch-pieces, and a brake operating upon the shaft D to arrest its motion when it is uuclutched, substantially as specified.

9. In a seWing-.1nachine, the combination, with a series of needles, a carriage for moving a fabric in a circular or similar path,and feed-rollers journaled in said carriage and operated so as to remain stationary during the movement of the carriage and to rotate While the carriage is at rest, of the shaft' D, the

shaft D,a clutch between these shafts, a lever for moving one of the clutch-pieces, and a locking-bolt operated on the uuclutching of the shaft D to lock this shaft, substantially as specified.

l0. In a sewing-machine, the combination, with a series of needles, of a carriage movable in a circular or a similar path, feed-rollers journaled in the carriage, meehanisinfor imparting motion to the feed-rollers and carriage alternately, and comprising a shaft D', a shaft D, a clutch J J 7, and a brake K K?, operating in unison with the movable part of the clutch to coact with a disk or flange on the shaft D, substantially as specified.

l1. In a sewing-machine, the combination, with a series of needles, of acarriage movable in a circular or a similar path, feed-rollers journaled in the carriage, mechanism for imparting,r `motion to the feed-rollers and carriage alternately, and comprising a shaft D', a shaft D, a clutch J U J 7, provided, respectively, with a shouldered projection and a groove, a brake operated in unison with the movable part of the clutch, a disk or ange atlixed to the shaft D, and shouldered projections on the brake and disk or iange, substantially as specified.

Louis scnuLTz.

lVitnesses:

C. T. WAGNER, PAUL OTTO.

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