USRE8063E - Improvement in sewing-machines - Google Patents

Description

2 Sheets-Sheet 1 A BECK. Assigno'r to L. 8n J. Dm roos. Sewing-Machines.

No. 8,063. R eissued Jan. 29,1878.

A ah ii r m 2 Sheets-Sheet 2.

A. BEG'K. Assig'ilor to L. &: J. Dnnoos.

Sewing-Machines.

No. 8,063. Reissued Jan. 29,1878.

NFETEWS, PHoTo-UTHcGRAPHiER, WASHINGTON. D C.

UNITED STATE s PATE NT OFFICE.

AUGUST BECK, on NE YORK, N. Y.,

ASSIGNOR "TO LOUIS nnizroos Ann JOSEPH DRYFOOS.

IMPROVEMENT IN. SEWING-MACHINESr Specification forming part of Letters Patent No. 190,184, dated May 1, 1877; Reissue No. 8,063, dated January 29, 1878 application filed January 2, 1878.

To all whom it may concern:

Be it'known that 1, AUGUST BECK, of the city, county, and State of New York, have invented certain new and useful Improvements in Quilting-Machines, of which the following is a specification:

The machine to which my invention relates is a sewing-machine to be used for quilting fabrics. It may be used, however, for sewing.

ornamental patterns of various kinds.

My invention consists of certain improvements on the quilting-machine described and shown in my Letters Patent No. 159,884, dated February 16,1875, these improvements having reference to the pressenfoot, the feed, and the mechanism for laterally reciprocating the sewing frame. They will be explained by reference to the accompanying drawing, in

which Figure l is a perspective view of the machine. Fig. 2 is a rear elevation of the same.

Fig. 3 is aside elevation, on an enlarged scale,

of the mechanism through the intermediary of which the feed is effected. Fig. 4 is apattern of the stitching made by the machine.

' I shall give but a general and brief description of such parts of the machine as are not imm ediately related to my improvements. The general organization does not materially diifer from that of the machine described in my above-recited Letters Patent. b

In the use of my patented machine difliculty was experienced in the use of the presser-feet,

which, under the arrangement described in the patent, were apt to rub and drag on the cloth, which was, therefore, at times caused.

They aremade vertically yielding by being in part composed of spirally-coiled wire springs, asshown.

The needle-holding frame (marked A) moves up and down in guides in the laterally-reciprocating sewing-frame B, this up-and-down movement being imparted from 1 a rock-shaft, C, which is operated by a crank and drivingshaft, D, through the medium of a connectingrod, E, jointed to a slotted arm on shaft 0,111 which arm its joint-pin is adjustable to or from the axis of shaft 0, in order to regulate the length of needlestroke. The drivingshaft D is rotated by gearing F G, the gearwheel F having fixed bearings, and being connected with the shaft D by a spline-and-groove connection, which permits the shaftjto laterally reciprocate with the sewing-frame independently of the driving-gear.

In my patented machine theregular forward feed of the goods was effected by feedrollers intermittingly rotated by means of a pawl and ratchet. No adequate provision was there made for a change of feed, and when conical bodies of skirts or skirt-borders were to be quilted it was", necessary to drag the material through on one side, at the same time crowding it back on the other,as is:done on ordinary sewing-machines. This, while be ing easily and readily effected on such machines, and the material being turned under and around a single needle, without any inconvenience to the operator, and without injury to the fabric, or to the parts of the mechanism which hold the material, cannot be done, in connection with a gang of needles, with a feeding mechanism holding the material both intermittingly during the intervals of stitches and continuously between sets of rollers, without great manual difficulty to the operator and without such strain upon the material and friction upon the feeding mechanism as will endanger the quality of the work and the operation of the machine.

'To remedy this I nowuse a diiferent mechpose made of conical shape, and of such taper or relative diameters at their respective ,ends as to conform to the shape of the skirt or border to be quilted.

The cloth to be sewed passes over the clothplate I, under and back of the lower roll; thence up between the two rolls, and to the front of the upper roll, over whichit finally passes. The rolls are made conical only for thepurpose above mentioned. To feed straight goods they are made cylindrical. They do not move with the sewing-frame. They have no movement of lateral reciprocation, but revolve in bearings formed in a stationary frame, H. They act intermittingly, resting during the formation of the stitch, and feeding the goods when, the'needles are out of the cloth. The intermittent movement of rotation is produced as follows: The lower roll is the one that is positively acted 011-: The other roll has movable boxes, acted on by springs, which cause it to bear with a yielding pressure on the lower roll, the two rolls being geared together, as

shown.

The shaft or journal of the lower roll is at one end prolonged to extend beyond its bearing, and on this prolonged end is mounted a hub, the periphery of which is encircled by a spring-ring-like clasp, c, which is not a continuous ring, but has separate ends, one of which, 61., carries a yoke, 01. The other end 6, directly above the end 0?, is free, and normally is somewhat separated from the other. Pivoted at f in the yoke cl is a lever, 9, whose shorter arm overhangs the end 0, and whose longer arm is ill-contact with a cam, tappet, or eccentric, h, on the driving-shaft, said part h being of a width sufficient to allow it to reciprocate with the sewing-frame without quitting the lever.

When the longer arm of the lever is raised by the cam,.its shorter arm bears on the end 0 of the spring-clasp, and first forces it down toward the other end, and so causes the clasp to clutch the hub. The, continued movement of the lever now causes the hub to make a movement of partial rotation, thus operating the feed-roll. The extent of movement of the roll is determined by the amount of lost motion of the lever, and this lost motion is regulated by means of a screw, 9, in the shorter arm of the lever, which may be caused to approach the ;end 0 of theclasp; more or less, as required. I I thus, in effect, have a friction-clutch, which is caused to engage and operate the feed by means of a vibratory lever, which is caused to act on the clutch sooner or later in its stroke, according to the length of stitch required.v The lever is held down to the eccentric h by a spring, h.

The same kind of mechanism is employed to give movement to the-laterally reciprocating sewing-frame. In this case, howeverfas seen in the drawing, the mechanism is duplicated, one friction-clutch, i, .and,lever j being re.- quired to move the frame in one direction, and one friction-clutch, k, and lever Z being required to move the frame in the other direction. The mechanisms are mountedone on one side, and the other on the other side of a central flange, m, on a shaft, 02, which is rocked back and forth by the action of the clutches, and is connected with the sewingframe by a rod, 0, jointed at one end to an I arm projectin g from the sewing-frame, and at the other 'end to a radial arm projecting from the shaft n or from the flange m thereon.

The levers j and l are held by springs p 1) against the pattern cams, by which they, respectively, are acted on; and this brings me to the last portion of my improvements, which relatesto a pattern mechanism, or mechanism for giving to the sewing frame the lateral movement required for the particular pattern to be made.

In 'mypatented machine I use for this purpose a peripherally camgrooved patternwheel.

This wheel is required to be changed not only for each regular feedi. 6., for varying length of stitches-but also for every figure or pattern. I To remedy inconveniences arising from this plan I have now adopted a permanent wheel, J, gearing with the driving mechanism, and carrying on its opposite faces the cams s, which operate the levers of the friction-clutches. These cams are removable from the wheel, and may be replaced by others, so that with the same wheel any number of pattern-cams can be interchangeably used. The cam-points .9 may be in one piece with the central disk S, or they may be made separate from the disk, and attached independently of one another to the wheel. The wheel is of a size to make one element of the design or pattern, so that at each revolution of the wheel one ele ment of the design will .be completed. For instance, the cams shown in the drawing will make the zigzag pattern shown in Fig. 4, and that pattern is composed of a number of elements, each of which consists of up-and-down lines in V form. While the series of cams on one side of the wheel act on one lever the other lever is opposite the open space on the cam-disk on the other side of the wheel. Thus the one set of cams, acting on one lever by-a series of intermittent impulses, draws the sewing-frame in one direction. Those cams then become inactive, and the opposite set commences to act on the other lever, causing the frame to move in a similar manner in the other direction, thus, in conjunction with the regu- .lar forward feed, causing a pattern to be pro (luced like that shown in Fig. 4.

I have described only so much of the machine as required to, illustrate my improvements. The stitch-forming mechanisms, one for each needle, may be of any approved pattern, embracing tension, take-up, spool-holder, shuttle, or hook forthe under thread, &c.

Having described my improvements, what I claim, and desire to secure by Letters Patent, 1s-

1. The combination, with a series of vertically-reciprocating needles mounted in a laterally-reciprocating sewing-frame, of conical feed-rolls, acting intermittingly during the intervals of the formation of stitches, substantially as herein shown and described.

2. The combination, substantially as set forth, with a series of vertically-reciprocating needles, of a like number of vertically-yielding and elastic annular Presser-feet, one for each needle, each presser-foot surrounding its needle, and attached to and moving with the needle bar or holder, and rising from the clothplate when the feed takes place.

3. The combination of the laterally-reciprocating sewing-frame and independent forward feed with a series of needles carried by said sewing-frame, and a like number of verticallyyielding annular presser-feet, one for each needle, each presser-foot surrounding its needle, and attached to and moving with the needle bar or holder, as shown and set forth.

4. The described mechanism for operating the feed, consisting of a friction-clutch clasping the feed-shaft, in combination with a vibratory pivoted lever supported on. one end of the clutch, and having one of its arms overhanging, but not attached to, the other and free end of the clutch, substantially as set forth, so that the movement of said lever shall cause the clutch first to close upon the shaft, and

. then to rotate the same, as set forth, whether the said mechanism be used to operate the forward or lateral feed.

5. The combination of the friction-clutch,

the feed-shaft embraced by the same, and the vibratory lever provided at that end, which acts on the clutch, with means of adjustment, whereby the lost motion of the lever may be increased or decreased at pleasure, to regulate the length of the feed.

6. The combination, with the sewin g-frame, of the pattern-Wheel and removable patterncams, one set on each face of the wheel, the one set designed to move the sewing-frame in one direction, the other set in the other direction, each set acting alternately on the frame, and both being removable to allow different sets of pattern-cams to be interchangeably used on the same wheel.

7. The pattern-wheel, with removable pattern-cams, one set on each face of the wheel, in combination with friction-clutches and their operating-levers, one set for each set of pattern-cams, and a rock-shaft, on which said clutches are mounted, connected with and imparting alaterally-reciprocating movement to the sewing-frame, substantially as herein shown and set forth.

In testimony whereof I have hereunto signed my name this 28th day of December, A. D. 1877.

AUGUST BECK.

Witnesses:

GEORGE F. LANGBEIN, W. S. D. EHABT.

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