US447570A - Quilting machine - Google Patents

Description

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M. KOCH. .A QUILTING MACHINE.

No. 447,570. Patented Mar. u1891.

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M. KOCH. QUILTING MACHINE. No. 447,570. Patented Mar. 3

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M. KOCH. QUILTING MACHINE.

Patented Mar. 3, 1891.

Fly-6 STATES PATENT Prion.

MATTHIAS KOCH, OF NEIV YORK, N. Y., ASSIGNOR TO LOUIS SOI-IULTZ, OF

SAME PLACE.

QUILTlNG-WACHNE.

SPECIFCATION forming part of Letters Patent No. 447,570, dated March 3, 1891. Application filed February l0, 1888. Serial No. 263,559. (No model.)

To @ZZ whom t may concern:

Be it known that I, MATTHIAS Koen, of New York, in the county and State of New York, have invented a new and useful Improvement in Sewing-Machines, of which the following is Va specication.

My improved sewing-machine is designed to sow patterns of various forms upon fabrics. I employ a gang of needles which work in unison and all sew similarpatterns. The.

goods to be sewed are borne upon a carriage, which has a four-Way motion or a motion fore and aft and from side to side of the machine. The goods have also an independent forward feed.

I will describe the machine in detail, and then point out the novel features in claims.

In the accompanying drawings, Figure lis a plan or top View of the machine, partly in section, the parts shown in' section being taken on the plane of the dotted liney y, Fig. 2. Fig. 2 is a vertical section of the machine, taken on the dotted line x rc, Fig. l, and looking in the direction of the arrows at the ends of said line. Fig. 3 is a detail view, on an enlarged scale, of certain pattern-cams employed in the machine. Fig. d illustrates a modification of certain parts. Figs. 5 and Gillustrate different arrangements of 'needles and patterns, which may be sewed by such arrangements.

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

A designates the main shaft, to which motion is imparted by a belt on a pulley A. This shaft is journaled in suitable bearings a, extending upwardly from the bed of the machine, and also in side portions B B of the frame of the machine. A crank d is mounted upon the end of the main shaft beyond the portion B of the frame. This crank imparts motion to a rock-shaft d2, through an intermediate crank rod a3. The rock-shaft a2 is journaled in suitable bearings in the portion B B of the frame and imparts motion to a needle-bar d4, in which ofneedles is secured. Motion is transmitted fron-1V the rock-shaft to the needle-bar by arms d, rigidly keyed to the rock-shaft and pivotally connected to links a, which are in turn pivotally connected to vertical sliding rods a7, working in suitable guides as in the frame. The needle-bar is rigidly secured to the rods a7.

Upon the main shaft, adjacent to the crank a', is an eccentric a9, operating through an ec- 5 5 centric-rod am and rock-shaft c. to impart' motion to shuttles. Theshuttles and shuttledrivers and other complementary mechanism for operating the shuttles I havegnotsillns-`- trated, as they do not form part of my inven- 6o tion and would only serve to obscure the drawings. They are of the usual or any desired construction. A presser-bar Ct13,operated by toes au on the rock-shaft coming in contact with projections a on the upper ends the forward and back movement of the goods other than the feed of the goods, and the patternwheels C2 C3 govern the side-to-side movement of the goods. The pattern-wheels O O are arranged at right angles to the pattern-wheels C2 O3. is employed, by which the forward feed of the goods is controlled. The pattern-wheels O O are mounted uponvthe horizontally-extending shaft Cjournaled in suitable bearings ex- Another pattern-Wheel O4 8o tending' upwardly from the bed-plate of the 85 machine. The shaft C5 bears near one end a beveled gear-wheel O, which niesheswith another beveled gear-wheel O7, rigidly keyed upon a shaft C8, extending in approximate right angles to the direction of the length of 9o the shaft The shaft OS bears near one of its ends a ratchet-wheel O9. This ratchetwheel derives motion from a pawl e, which pawl is mounted upon a rocking pawl-carrier e', loosely hung upon the shaft OS. carrier e derives motion from an eccentricrod e2, which latter is actuated in turn from an eccentric e3 upon the main shaft A. It will be readily seen that when the main shaft is rotated rotary motion is transmitted to the.

The pawl- IOC shaft C3, and consequently to the patterncams C C. The pattern-cams C2 C3 are rigidly keyed upon the shaft CS, and consequently derive motion from the eccentric e3 in the manner just described. The pattern-wheel C4 is mounted upon the shaft D, journaled in suitable bearings CZ, extending upwardly from the bed of the machine. The shaft D has also keyed upon it aratchet-whcel CZ. The ratchetwheel d receives motion from a pawl d2, carried by a rocking pawl-carrier d3, deriving motion from au eccentric rod di, which latter is in turn actuated from an eccentric d5 upon the main shaft A.

I have shown a friction device T, provided with jaws bearing against the sides of the ratchet-wheel d and secured to the bed-plate of the machine, which will prevent the rotation of the ratchet-wheel CZ in any but the desired direction. This friction device is of ordinary construction. I have also shown a stop-pawl C17 for the same purpose mounted upon an upwardly-extending bracket d8 adjacentl to the ratchet-wheel d.

I will first describe the manner in which q the godsarc fed by the feed-rollers. When the ratchet-wheel d is rotated, it of course transmits motion to the pattern-cam C4. This pattern-cam operates in conjunction with a sliding rod .I5 to transmit motion to a ratchetwheel f, mounted upon a shaft f', journaled in suitable bearings on the frame of the machine. The shaft f is in the example of my #improvement shown squared near one end 3 5 and is adapted to slide freely through a squared aperture in a gear-wheel f2, which gear-wheel is free to rotate in a bearing f4 on a carriage I,comprised in the machine. This gear-wheel is provided with a collar f5 upon 4o its hub extending outside of the bearing f4, which prevents the gear-wheel from being moved lengthwise by the movement of the shaft f. This gear-wheel f2 meshes with a gear-wheel f6, mounted on a shaft f7, having in this example of my improvement a squared portion, which extends through a squared aperture in a gear-wheel fg, journaled in manner similar to the gear-wheel]2 in a bearmwming` fB upon a carriage I, comprised in the 5o machine. During the movement of the carriage I fore and aft the machine the gearwheel fg may be slid freely to and fro upon the shaftf. The gear-wheel f meshes with a gear-wheel flo, mounted upon a shaft fu,

5 5 journaled in -bearings upon the carriage I, which shaft bears a gear-wheel flz. The gear-wheel f12 meshes with a gear-wheel fls, mounted upon the axle of one of a pair of feedrollers G G2. The feed-rollers G G2 are 6o journal'ed in side portions G3 G4, extending upwardly from the carriage I. The rollers are geared together .near one of their ends, so that they will rotate in unison. The feed- 4' `rollers G G2 always rotate in the same direction, 0r,.in other words, to feed the goods forward or toward the rear of the machine. When the goods are being fed forward, the

feed is an intermittent one, a pause occurring` each time the needles are passed into the goods, in order to facilitate the completion of the stitch by the shuttles. The conformation of the pattern-cam C* is such that the speed with which the goods are fed forward may be varied at will, in order to provide for sewing irregular patterns upon the goods. The conformation of the pattern-wheels C C C2 C3 is such as to provide for the movement of the carriages I I in such directions aud at such rates of speed as shall accomplish the same. result. Y

J desi gnates a bar extendingfore and aft the machine ad!) acentto the pattern-wheel C4. This bar extends near its rear end through a guide jg on a portion of the frame of the machine. The spring jg, surrounding the rod between said guide and a shoulder j Qn the rod, tends to force the rod toward the front of the machine. The rod bears at its front end a roller or bowl j, which is acted upon by a cam J 11, mounted upon the main shaft A. As the main shaft rotates the shaft J5 is moved backwardly against the resistance of the springjs. The rod bears upon it apin or projecti0nj16,which latteris held constantly in contact with the peripherical portion of the pattern-cam C4. The

pattern-cam C4 is of peculiar constructionthat is to say, it is provided upon its periphery with notches or indentations, into which during the rotation of said cam the pin or projectionj16 may be sprung through the action of the spring js. It will be quite clear that when such action takes place, or, in other words, when the pin drops into one of the indentations on the periphery of the cam, the rod J5 will be shot forward toward the front of the machine and the roller or bowl js moved into a position where it will be acted upon to a greater extent by the cam J 11 than is the case when the pin j is riding upon the periphery of the cam. IVhen the ping'1li has thus dropped into a notch in the periphery of the cam, the cam J operates to move the pawl-carrier e5, with which the rod J 5 is connected, backwardly, and when the cam J is rotated into such position as to be removed from contact with the roller or bowl the rod J5 will be moved forward by the springj to cause the rotation of the ratchet-wheel f through the medium of the pawl-carrier e5 and its pawl c6, and consequently of the feedrollers G G2, in manner previously described. Of course it is to be understood that the forward feed of the goods does not in this machine transpire unless it isdesired to feed the goods directly forward, so as to sew lines in the direction of the length of the goods. Then the cam C4 has rotated far enough, the pin or projection jl will ride up upon the periphery of the cam, and the roller or bowl f will. not then be acted upon by the cam'J11 to cause a rotation of the ratchet-wheel f, and

thus of the feed-rollers.

Before proceeding to a description ofthe IOC IIO

mode of operation and construction of the pattern-cams for varyin g the direction and degree of movement of the carriages I I', I will describe said carriages briefly. The carriages I I constitute a support for the work to be sewed. The carriage I, or'the lower of said carriages, is the one which receives motion from side to side of the machine. It consists, as herein shown, ot plate-sections, one upon each side ot the work-bed of the machine, joined together by a connecting piece 11. The plate-sections are supported upon anti-friction rollers h, traveling in guideways h on the base of the machine. Guides 't' on the base of the machine serve to guide the carriage I in its to-and-fro movements. The carriage I consists of platesections I2, mounted upon the carriage I', and adapted to be slid to and fro in guideways fi upon the carriage I. The carriage I has a movement fore and aft the machine, which movement is independent of the movement rte tn tlg'.l carriage I. The carriage I', 1however, when it moves from side to side of the machine carries with it the carriage I. The carriages I I constitnte in effect a single carriage. It is necessary in order to sew a pattern such as I have illustrated that the motions of the carriages should be variable, or, in other words, should be capable of moving different distances in a given direction. In sewing the pattern shown, for instance, the carriage will move a portion of the time directly toward the right or left. At other times it will move directly toward the front or rear, and at other tiines the movement will be a combined side to side and forward and backward. NVhen this combined movement transpires, it will be apparent that the deviation from lines running parallel with or at right angles to the direction ot' the forward feed of the goods will be very slightin some instances. In order to provide for these slight deviations and produce a symmetrical figure, I have divided each stitch into ten arbitrary equal parts, so that a deviation Erom a right line which a stitch may take will equal one-tenth of a stitch taken at right angles to a line from which the irst stitch deviates. Such deviation from a rightline may equal any number of tenths of the length of a stitch which may be desired, according as the curve or angle of the pattern be lslight or great.

The deviation of the stitches from a right line are produced as follows: Each iigure of the pattern illustrated, for instance, contains one hundred and fifteen stitches. Each of the pattern-wheels C C C? C3 is divided radially into one hundred and `fifteen sections c, corresponding to the number of stitches in the pattern. Consequently when the pat tern-wheels have made one complete revolution each of the needles has sewed a complete ligure. Each separate movement of the pattern-wheels occasioned by the ratchet and pawl CD e moves each of the wheels a distance equal to the length ot' one of the sections on the periphery of the wheel. The periphery of each of the wheels is stepped thronfiout,

each step corresponding to one of the radial sections c and representing a single stitch taken lin the goods. The depth of these steps varies according as it is desired that the stitcl shall deviate more or less from a right line.

In order to cause variation in the speed with which the carriages are moved, the contour ot the periphery of the cams C C C2 CS is irregular, the irregularity being such as will cause the movement of the carriages only in such direction and to such extent as is necessary to produce a desired pattern. Of course these pattern-cams may be changed at will in order to provide for the sewing of different patterns on the goods.

Extending from the carriage I is an arm CO, which arm extends between the patternwheels C C. Upon this arm are pins erprojections j, one ot which bears upon the periphery of the cani C and the other of which bears upon the periphery ot' the cam C at diametrically-opposite points. The arm C10 is provided about midway in its length with a longitudinal slot, which extends about the shaft C, whereby free longitudinal movement of said rod is permitted. As the cams C C rotate, the pins or projections j, bearing upon their peripheries, are moved into and out of the steps upon the peripheries ot' the cams, and, according as the greater projection from the center of rotation of the cams is upon one side or the other, the arm Clo will be moved, and will consequently move the carriage C to one side or the other ot the machine, as the case may be. It is to be understood in this connection that the diametrical distance between those portions of the peripheries of the cams which. are in contact with the pins j is always the same. In other words, an increased diameter upon one side of one ot the cams is met by a correspondingly-decreased diameter upon the diametrically-opposite side of the other of said cams. One of the pair ot cams C C causes the carriage I to move in one direction, while the other of said pair ot' cams causes the movement oi said carriage in the other direction. As previously stated, the cams C2 C3 cause the movement of the carriage I in a direction fore and aft the machine.

The construction of the cams C2 C:i is like that of the cams C C', previously described, and they operate by similar means to transmit motion to the carriage I, excepting that the rod C20, acting in conjunction with these cams, has upon it a rack Z, which rack en- IOO gages a' gear-wheel Z upon a shaft L, journaled in bearings upon the carriage I. The shaft L bears gear-wheels Z2, engaging racks Z5'upon the carriage I. When the rod C20 is moved longitudinally, it operates to rotate the shaft L, which latter, through the gearwheels Z? and racks Z, causes a fore-and-aft motion of the carriage I. The gear-Wheel Z is made with very long teeth, so that it may be slid along upon the teeth of the rack Z during the side-to-side movement of the carriage I without becoming disengaged from said rack.

I have shown the work-bed of the goods as npported upon an upright frame II, secured upon the base of the machine and'extending upwardly and about a connecting-piece into a suitable position beneath the needles.

P'designates a delivery-roller for the goods, and P a take-up roller. These rollers are shown as jon-'rualcd in suitable brackets in the carriage I.

In Fig. 4 I have shown a dierent means for transmitting motion to the shaft C8. In this case insteadl of mounting the ratchetwheel C9 upon the shaft C8, I mount it upon a separate shaft C15, journaled in suitable bearings on the base of the machine. 0n the shaft C15 is keyed a gear-wheel C16, which gear-wheel meshes with another gear-wheel C, keyed upon the shaft C8. By this means motion is transmitted from She rchet-wheel CJ to the shaft C8. The gear-wheel C1G contains a fewer number of teeth than the gearwheel C, and by varying the size of the gearwheel Cl any desired degree of speed may be imparted to the shaft C8. vThis arrangement therefore enables me to use larger ratchet-teeth on the ratchet-wheel C, whereby a very positive and uniform intermittent movement will be imparted to the patterncams. Vhen this arrangement of parts is used', I do not consider it essential that the peripheries of the cams C C C2 C3 should be stepped, as described.

Any number of rows of needles may be used, and these may be operated in any desired manner. In Figs and G I have shown that more than one row of needles may be employed in the machine. In Fig. 5 two rows ot' needles are indicated, the needles of one row being arranged directly behind those of the other row. In Fig. (i two rows of needles are delineated, the needles of one row being at a distance from and intfzmedztte 1.1" the needles of the other rows', se that a line drawn between the needles of the two rows will be a zigzag line. The resultant movement of the goods beneath the needles is such as to Yproduce the respective patterns delineated.

I have filed an application for United States Letters Patent, Serial No. 199,412, of April 19, 1886. In said application I show and describe -a work-supporting carriage and mechanism for imparting motion thereto in two lines at right angles to each other in a single plane. I- do not herein claim anything claimed therein.

In pending applications numbered, respectiveiy, 109,412, 263,560, 280,110, and 201,320, I have shown and claimed mechanism similar to that shown, but not claimed herein.

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

1. In a sewing-machine, the combination, with sewing mechanism, ot' a support for the work, a main shaft, a shaft extending parallel with the main shaft and deriving` m ion therefrom, two pattern-cams mounted on said second shaft, a third shaft deriving motion from the second-named shaft and extending at right angles thereto, two pattern-cams mounted on said third-named shaft, and' gearing, substantially such as described, operated from the pattern-wheels mounted on the second-named shaft, for causing a fore-and-aft motion of the said work-support, and an arm operated from the pattern-wheels mounted on side movement of said work-support, substantially as specified.

2. In a sewing-machine, the combination, with a sewing mechanism, of a support for the work, a main shaft, two pairs of pattern-cams for imparting motion to said work-support,

and arms extending between said patterncams, each of said arms bearing two -pins or projections, one of which pins or projections 'bears upon one of the camsV of the pairk with which it co-operates and the other of said pins Vor projections bears upon the other of said pair of cams, said arms serving to transmit motion to the work-support, substantially as specified.

3. In a sewing-machine, the combination, with sewing mechanism, of a support for the work, a pair of pattern-cams, a shaft upon vwhich said cams are mounted, an arm provided with projections bearing upon the peripheries of said cams, said arm being provided wit-h a rack, a gear-wheel with which said rack engages, a shaft upon which said gearwheel is mounted, other gear-wheels mounted on said shaft, and racks upon the work-support, with which the last-named gear-wheels engage, substantially as specified. y

4. In a sewing-machine, the combination, with sewing mechanism, of a support for the work, a rack and pinion for impartinga movement to the support, a shaft upon which said pinion is mounted, a pinion provided with elongated teeth, also mounted on said shaft, a rack engaging said last-named pinion, and. pattern-Wheels imparting alongitudinal movement to said last-named rack, substantially as specified.

5. In a sewing-machine, the combination, with sewing mechanism, of a support for the work, a pair of pattern-cams, a shaft upon which said cams are mounted, an arm provided with projections bearing upon the periphries of said cams, said arm being provided with a rack, a shaft mounted on the work-support so as to move with the latter, a gear-wheel engaging said rack and mounted on the last-named shaft so as to move with the same, other gear-wheels mounted on said last-named shaft, and racks upon the worksupport, with which said last-named gearwheels engage, substantially as specified.

6. In asewing-machine, the combination, with sewing mechanism, of a support for the work, a shaft, a pattern-cam controlling the 'the' third-named shaft for causing a side-to- IOO IIO

rotation of said shaft, a gear-wheel rotated by gear-wheel first named,a.shaft mouriteduponv the said work-support 'and bearing the gearwheel last named, a third gearwheel rotatedv by the second-named shaft, said gear-whee1s and. shafts being connected 'to have a relative sliding movement, feed-rollers', 'and gearing intel-mediate of said,lastn'amed gear-wheel und the feed-rolleis foi' ltraifismittngmot-ion: to the latter, substantially as specified.

with sewing mechanism, ofa support for the worka a.V shaft, a pattern-Caml controlling the, rotationv of said shaft, feed-rollers,'a seoond shaft, iavrmittenlyoperatigg `bevel':gemav whgglgforfransmitting motion'from the rst 15 the seeondnamed'saft, other iuizexffA mittently-operati-g bevel Agoaa'wvheels for transmitting motion from the Second-mined shaft to the feedxollers, one of snidlast-named vgearwheels 4Deinginuwabl-e leng'thwise onfthe :9" -ecmd-nmed shaft, Substantially as ,speoi- 7. Inv a sewing-machine, the combination,H

. MATTHIASQKOCH. Witnessesr v

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