US507757A - schultz - Google Patents

Description

{No.Model.) 2 sheets-sheet '1* L.v SGHULTZ. QUILTINGv MACHINE.

Q No. 507,757. Patented 001;. 31,189.3. H nmilrllr K Il (D 2 Sheets-Sheet 2.

(NQ Model.)

L SCHULTZ QUILTING MACHINE.

f Patented Oct. 31, 1893.

r- MI.

Mind/w MTE STATES PATENT OFFICE.

LOUIS SCHULTZOF NEW YORK, N. Y.

QUILTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 507,757, dated October 31, 1893.

Application filed April 9, 1891. Serial No. 388,230. (No model.) i

To all whom it may concern.-

Beit known that I, LOUIS SOHULTZ, 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 a specification.

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

In the accompanying drawings, Figure l is a front elevation of a quilting machine embodying myimprovement, certain parts being shown in section. Fig. 2 is a plan or top view of the machine, the needle bar and other parts above the same being omitted. Fig. 3 is a horizontal section taken at the plane of the dotted line y y, Fig. 1. Fig. 4 is a vertical, transverse section taken at the plane of the dotted line a: Fig. 1 and made on a larger scale. Fig. 5 is a View of certain parts at the left hand end of the machine. Fig. 6 is a face View on a large scale of a piece of fabric stitched in the machine. Fig. 7 is a back view of the fabric shown in Fig. 6.

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

A designates the bed of the machine. As here shown, it is supported on legs A.

B B2 designate two side frames secured in the present instance to the bed A by bolts or otherwise to occupy parallel positions.

C designates the needle bar. This has secured to it a series of needles C which, in the present instance, are arranged in a single row.

Secured to theneedle bar are a number of upright rods c, which work vertically within brackets b attached to the front of a bar B2 which is fastened to the side frames B B2. At the upper end the rodsc are connected by links c with arms c2 affixed lto a rock shaft O2. The rock shaft is oscillated by means of a rod C2 deriving motion from an eccentric C4 arranged upon a shaft D. The rod Csconnects with a crank C20 mounted on the shaft C2. The shaft D derives motion from any suitable source of power as, for instance, a belt applied to a pulley xed upon said shaft.

It will be readily understood that the rock shaft C2 imparts a vertically reciprocating motion to the needle bar and needles. The only motion which the needles have in this maconstituting part of the frame of the machine.

The rods E3 are connected by links E5 with arms Eafixed to a shaft E7 that is journaled in brackets supported by the bed A. With one of the arms E6 is connected a rod E8, which is connected with an eccentric E9 affixed to the shaft D. The rocking motion imparted by the eccentric to the rock shaft E7 willproduce a reciprocating movement of the shuttle carriers E lengthwise of the race bars E.

The crank C20, whereby motion is transmitted from the rod C2 to the rock shaft C2 is loosely mounted upon the shaft C2 and is capable of being periodically interlocked there- With by means of a clutch. The clutch which I have l shown consists of a collar O21 surrounding the shaft C2 and movable lengthwise thereof, but it is engaged with the shaft by a spline or feather C22 so as to be incapableof independent rotary movement. When the collar C21 is moved up to the hub of the crank C20, a pin C23, preferably having a taper end, extending from the hub of this crank, engages with a corresponding recess in the clutch collar G21 and thereupon the clutch collar and crank become so engaged that the motion of the crank C20 will be imparted through the clutch C21 to the rock shaft C2. By the movement of the clutch collar lengthywise of the shaft the crank C20 may obviously be periodically disengaged from the crank so as to cause a suspension of movement in the shaft C2, and, consequently, an intermission in the movement of the needles. I have shown the clutch collar as operated bya mechanism consisting essentially of alever C24and cams C25 O26. The lever C24 is fulcrumed between its ends to a bracket C27 which is secured to the side piece B2 of the main frame of the machine. At the upper end this lever is forked and provided with pins which en.d

ter a circumferential groove formed in the clutch collar C21. The lower end of thelever is connected by a link C2S with a sliding plate C29 that is operated by the cams C25 C2G. The construction of these cams may best be understood by reference to Fig. 3. It will be seen that the sliding plate C has two antifriction rollers projecting upwardly from it to co-act with the cams. Thecam Cf5 consists of two long segments and is ot' considerably reduced diameter intermediate of these segments. The other cam, C2G, has two short segments and between these segments is reduced to the same diameter as the reduced portions of the cam C25. The relation of the cams should be such that the segments of the cam C26 will be opposite the reduced portions of the cam C25, or, in other words, opposite the spaces between the segments of the cam C25. These cams C25 C26 are secured to ashaft F6 which is supported in a bracket erected upon the bed A of the machine.

The shaft D has affixed to it a worm f25. This engages with a worm wheel im affixed to the upright shaft F6.

Obviously, the needles should occupy an elevated position whenever their operation is suspended. To insure this, I preferably employ a mechanism which is fully illustrated and described in an application for Letters Patent filed by me on the 24th day of July, 1890, and numbered 359,781. It comprises an arm C30, which is affixed to the rock shaft G2 (see particularly Fig. i). To this arm is con-I nected a spring C31 which is also. connected to an appurtenance of the side frame B. The action of this spring upon the arm C30 is such that it tends to effect the rotation of the rock shaft C2 in a direction to elevate the needles. Then the spring acts, it pulls the arm G30 down into a position approximately in line with that point at which the spring is secured to the side frame B', but it will not assume a position exactly in line because the weight of the needles, the needle bar and other parts will counteract the tendency of the spring to bring the arm C into the described position. Affixed to the shaft C2 is another arm C32, which may be formed integral with the arm C30. Then the spring C3'1 actuates the rock shaft C2, the arm C32 contacts with a stop C33 which is fastened to the side frame B. In this way the motion of the rock shaft C2 under the influence of the spring C31 will be arrested. It is not intended, however, that the arm C32 shall remain in contact with the stop C33. The weight of the needle bar, the needles and the appurtenances of these parts will cause the arm C32 to recoil or move away from the stop C33 after contacting with it. Preferably the stop C33 will be faced with resilient material on that side which is opposed to the arm C32.

In the machine which I have selected for an illustration of my improvement, the fabric to be quilted is intended to have no motion excepting one in the direction of its length. It is moved longitudinally beneath the needies by means of rollers F F2 journaled in the side pieces B B2 of the machine frame. The journals of the roller F2 are supported by bearings fitted to housings formed in the side pieces B B2. Springs press these bearings in such direction as to move the roller F2 toward the roller F', and the tension of such springs may be regulated by screws.

The fabric to be quilted usually consists of a sheet of wadding and a sheet of silk or some other like fabric. As here shown, the wadding is delivered from a roll R and the silk or other fabric from a roll R2. They pass thence over a work plate W, which is erected above the the race bars E and perforated to permit of the passage of the needles through it. In passing over this work plate they pass beneath a bar S, and, after turning around the front edge and traversing the top surface of the latter, they pass around the feed roller F and between the latter and the feed roller F2. Leaving the feed roller F2, they pass to a roll R3, upon which they are wound. The wadding and fabric are stitched together as they pass around the front edge of the bar S, the latter being notched at its edge to permit of the passage of the needle, through the material and fabric. The material and fabric are therefore united by stitching so as to form a quilted" fabric before passing to the feed rollers.

Before describing in detail the bar S and its functions, I will finish my description of the feed rollers. They are geared together at one end by gear wheelsfaffixed to adjacent journals. To the roller F is affixed a gear wheel f2 which derives motion from a gear wheel f3 afxed to a shaft F that is supported at one end in the side frame B2 of the carriage and at the other end in a bracket B erected upon the bed A. The shaft F has mounted on it a gear wheel]06 and the latter, and through it the shaft F, derives motion periodically from a toothed segmentfTaiTixed to a shaft F5. This shaft F5 is supported in the bracket B, and derives motion from the upright shaft F6, previously mentioned, through the agency of bevel gear wheelsf41 f42 with which this shaft F6 and the shaft F5 are provided. It must be understood that only when the segment f7 engages with the gear wheel f6 the feed rollers have any rotary motion. On the shaft F atoothed lock wheel f15 is affixed. Its teeth co-act with a sto flange or disk fi aiiixed to the shaft FG. The stop iiange or disk fg is circular lin form but has two notches oropenings at diametrically opposite points in its periphery. Except when one of these notches comes opposite the lock wheelfl, the stop fiange or disk engages with the lock wheel j'15 and holds the latter against rotation. While the shaft F carrying this lock Wheel is thus held against rotation, the feed rollers are precluded from rotating. One end of each notch or opening in the stop flange or disk comes opposite the lock wheel f15 just before one end of the toothed seg ment f7 enters into engagement with the gear IOS ITO

Il 12o gone out of engagement with the wheel f6.n

It follows, therefore, that the stop flange or disk locks the shaft F and the feed rollers at all times except when the toothed segment f7- engages with the wheel f6 to rotate the shaft F and the feed rollers.

It will be seen that the bar S is of triangu` lar form, tapering from the rear to the front, and that its front edge where the notches are made for the passage of the needles is quite thin. It is supported by means of screws s s2 passing through cheek pieces s3, which are supported from a stationary part of the machine; in the present instance by two uprights or brackets which sustain the rails E4 whereby the shuttle bars E are supported. The cheek pieces s3 are slotted horizontally; hence the screws can move forwardly or backwardly through the slots to permit of a corresponding movement of the bar S. The bar S may be adjusted by means of screws s4, en,- gaging with tapped holes in lugs extending from the cheek pieces and having a swiveling connection with the rear of the bar S. The fabric is stitched by the needles while double over the front edge of the bar S; hence the length of the stitch may be varied by moving the bar S forward or rearward, so as to cause the needles to stitch closer to or farther from the front edge of said bar. Preferably there will be a cavity or recess s formed in the upper surface of the bar S near its front edge to accommodate unevenness in the fabrics.

Over the bar S a bar T is arranged and serves to prevent an upward movement of the fabric with the needles. As shown, it has rearwardly turned ends which are longitudinally slotted. Screws t passing through these slots and entering tapped holes in the tops of the cheek pieces, serve to fasten this bar T in position in such manner that it may be adjusted forward or rearward to produce the best results.

The feed rollers only move periodically because they derive motion from the segment 5o f7. The operation of the sewing mechanism is also intermittent. Owing to this, there will only'be occasional stitches and the threads will be carried over the fabrics for theintervals between the stitches. The wadding is outermost as the fabrics pass around the front edge of the bar S, or in other words farther than the silk or other fabric fromsaid bar S, and, as the stitches caused by the descent of the needles will be made through both portions of the fabric at some distance rearward of the point where the fabrics are doubled, the thread of the stitch will show at the front of the face fabric of silk or like material. The stitches will be made undersuch tenslon that they will not interfere with straightening the fabrics out.

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

1. In a sewing machine, the combination of sewing mechanism comprising reciprocating needles, a bar laterally adjustable toward and from the needles and having a notched edge around which the fabrics to be sewed are fed and feed rollers for feeding the fabrics to be sewed over said bar, substantially as specified.

2. In asewing machine, the combination of sewing mechanism, comprising reciprocating needles, a bar adjustable laterally to and from the needles and havinga notched edge around which the fabrics to be sewed are fed and a bar arranged above the bar first mentioned for holding the fabrics down upon the first mentioned bar, substantially as specified.

3. In a sewing machine, the combination of sewing mechanism comprising reciprocating needles, a bar adjustable laterally to and from the needles and having a notched edge around which wadding and a face fabric are fed and passed with the wadding outermost, rollers arranged below the plane of the notched bar from which said wadding and face fabric are passed and feed rollers arranged above the plane of said notched bar by which said wadding and face fabric are moved along, substantially as specified.

In testimony whereof I have signedv my name to this specification in the presence of two subscribing witnesses.

' LoUIs soHULrz.

Witnesses:

EDWIN H. BROWN, MONTAGUE D. COHEN.

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