US416571A - Sewing-machine - Google Patents

Description

7(No Model.) 7 4 SheetsSheet 1'. 1). H. OOLES. SEWING MACHINE.

No. 416,571. Patented Dec, 3, 1889.

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Patented Dec. 3,1889.

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UNITED STATES PATENT OFFICE.

DAVID l-I. COLES, OF BROOKLYN, NElV YORK.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 416,571, dated December 3, 1889.

Application filed \Tune 6, 1889- Serial No. 313,346- (No model.)

To all whom it may concern.-

Be it known that 1 DAVID H. COLES, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Sewing-Machines, of which the following is a specification.

This invention relates to certain improvements in sewing-machines, as pointed out in the following specification and claims, and illustrated in the accompanying drawings, in which Figure 1 represents a side elevation. Fig. 2 is a plan or top view. Fig. 3 is an inverted view of the front end of the main arm or goose-neck. Fig. 6 is a front view of parts contained in the goose-neck, showing the upper feed, the stripper, and the needle-bar. Fig. 7 is a similar view showing some parts not shown in Fig. 6. Fig. 8 is a vertical section of the shuttle-driver in the plane 0000, Fig. 10. Fig. 9 is a similar section in the plane y y, Fig. 10. Fig. 10 is a transverse section in the plane 2.2, Fig. 1, on a larger scale than this figure. Fig. 11 is a longitudinal vertical section inthe plane a? 00, Fig. 3. Fig. 12 is a transverse vertical section in the plane 3 y, Fig. 1. Fig. 13 is a similar section in the .plane 2' 2, Fig. 1. Fig. 14 is a longitudinal vertical section in the plane 00 00 Fig. 2, showing the upper feed-slide. Fig. 15 is a plan or top view of parts shown in Fig.

-14. Fig. 16 is a side elevation, and Fig. 17 is a plan or top View, of the lower feed-slide. Fig. 18 is a vertical section in the plane 3 11 Fig. 1. Fig. 19 is a horizontal section in the plane 5 .2 Fig. 18. Fig. 20 is a side view of one of the oblique feed-cams and the. devices for imparting a rising-and-falling motion to the same. Fig. 21 is a plan or top View of said devices. Fig. 22 is a front elevation of the top feed-dog or presser-foot detached. Fig. 23 is a side elevation of the top feed-dog or presser-foot and the stripper. Fig-2 1 is a partial rear view of the machine.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates the work-plate, from which rises the goose-neck B, which forms the bearing for a shaft 0. On the front end of this shaft is mounted a disk a, which carries an eccentric-pin b, that a Fig. 4 is a front view. Fig. 5 is aside engages a heart-shaped cam-slot c, which is firmly secured to the needle-slide D, so that by revolving the shaft 0 the requisite movement is imparted to the needle-slide. On the shaft 0 close behind the disk a is mounted a cam d, which engages a fork e, extending from a lever E, Figs. 6, 18, and 19, which is connected to the presser-bar F and also to the stripper-slide G, Fig. 23. The connection between the stripper-slide G and the lever E is formed by a pivot f, while the connection between the presser-bar F and the lever E is formed by a universal joint H, Fig. 19, which consists of a swivel-pin g, mounted in a socket h in the lever E and carrying an open head 2', through which extends the presser-bar F, and which forms the bearings for a pin j, on which the presser-bar can swing.

By referring to Fig. 19 it will be seen that the swivel-pin g extends at right angles to the pin j, so as to allow the presser-bar to swing in two planes which are at right angles to each other. Vith the stripper-slide G is connected the ordinary lifter I, Fig. 7, and if this lifter is turned up, so as to raise the stripperslide, the presser-bar F, which is connected to the stripper-slide G by the lever E, is carried up also, and both can be raised as far as the fork e of the lever E, Fig. 23,will permit. A wire spring 1 Fig. 7, is secured at one end to the face-plate of the goose-neck B and at the other end to the stripper-slide G, and the tendency of this spring is to depress the stripper-slide and presser-bar F, the latter being compelled to follow the up-and-down movement of the stripper-slide.

F is the presser-foot, and G" is the stripper, and it will be readily understood from the foregoing description that the presser-foot and the stripper adjust themselves simultaneously and automatically to the varying thickness of the material or work to be sewed.

The upper end 70 of the presser-bar F is ballshaped and fitted into a box Z, Figs. 14 and 15, which is formed on or secured to the outer end of the lever J. (See Figs. 2, 14:, and 15.) This lever swings on pivots m m, secured in a slide K, which moves in suitable guides on the top of the arm of goose-neck B.

By referring to Figs. 2 and 15 it will be seen that the lever J is made with two arms, which embrace the fr0nt end of the slide K.

This slide is provided near its middle with an oval eye 1), into which is fitted ablock 72, Fig. 14, which is held in place by a screw-stud n", so that the block, together with the slide, can swing on the stud a", while the slide is permitted to move backward and forward on the block n. In order to steady the slide K during its movements, a strap 0 is provided, which extends over the slide. (Best seen in Figs. 2 and 14.) On the front end of the slide K is formed a lip 19, which serves to steadythelever J as the same is raised or lowered, and on the inner end of said slide is formed a circular eye g, which embraces the box L, into which is titted the oblique cam M, which forms the principal part of the universal feed motion. This oblique cam is rectangular in cross-section, Fig. 15, and it fits into a corresponding opening formed in the box L, so that if the oblique camis turned round the box L is compelled to turn with it in the eye q of the slide K. oblique cam M is formed a circular groove 1', which engages a fork s, (best seen in Fig. 21,) mounted on pivots s s, which have their hearings in arms 1, extending from a rockshaft 21. If a reciprocating rotary motion is imparted to this rock-shaft, the oblique cam M is moved up and down and a reciprocating motion is imparted to the slide K, thereby causing the presser-bar F to swing in its universal joints II and It l. The direction in which the presser-bar F swings can be changed by turning the oblique cam M in the eye (1 of the slide K, and in order to be able to turn said cam it is mounted loosely on an arbor n, which is mounted in center points a ct, one of which extends up through the goose-neck B, while the other is secured in a standard N, secured on the top of the goose-neck.

The lower portion of the arbor v is square and passes through a plate 12, Fig. 14, which is firmly secured to the bottom end of the oblique cam and has a square hole fitting the square portion of the arbor. On this arbor is mounted a bevel-wheel Z), which engages a bevel-wheel c, mounted on the outer end of a shaft (1', which has its bearings in boxes (1", secured to the goose-neck B, and which is geared together with a vertical arbor c, that extends down beneath the cloth-plate and is geared together with a horizontal arbor f, Figs. 3 and 24, which in its turn is geared together with a vertical arbor g, on which is firmly secured the handle 0. By turning this handle the oblique cam M is turned and the direction in which the resser-bar F is caused to swing is changed.

The rock-shaft it, which serves to impart to the oblique cam M a rising-and-falling motion on its arbor 'v, carries an arm '11 which connects by a rod h with a bell-crank lever, 11, which has its fulcrum on a rock shaft or stud t", and connects by a rod 7", Figs. 1, 2, and 3, with an arm 7t", which extends from a rock-shaft Figs. 3 and 12. From this rockshaftextends an arm Z, which connects by a On the lower end of the per oblique cam M is mounted in the arbor v.

If a rising-aud-falling motion is imparted to the oblique cam M, this motion is transmitted to the oblique cam I, and vice versa.

The arbor p of the oblique cam P is geared together with the vertical arbor e by an arbor q, (see Fig. 1,) and if the handle 0 is turned the lower oblique cam P is turned simultaneously with the upper oblique cam M, and the movement imparted to the lower slide R corresponds exactly to that imparted to the upper slide K. On the lower slide R is firmly secured a plate \V, which is situated directly beneath the presserfoot F" and forms the support for the work, and also the throat-plate.

The rising-and-falling motion ofthe oblique cams M I is produced by the fecd-lever S, which is actuated by the feed-cam T. This feed-cam is mounted on a shaft U, which is geared together with the driving-shaft V, as indicated in Figs. 1, 2, and 24, and it (the feedcam) acts upon a cage 9', Figs. 1, 3, and 13, which connects with the feed-lever S. The fulcrum s of the feed-lever is movable in a slot s, Fig. 1, so that the stroke of the feedlever, and consequently the length of the stitch, can be adjusted, and the rear end of said feed lever connects with an arm t, which extends from the rock-shaft 7;, Figs. 3 and 12, so that by the action of the feedlever motion is imparted to the rock-shaft 7t, and through this rock-shaft to both oblique cams M and 1, and consequently the presser-foot F and the cloth-support \V are moved simultaneously in the direction for which the oblique cams have been adjusted by the handle 0, and, since the material to be sewed is firmly clamped between the presserfoot and the support \V a universal feed motion is imparted to the portion of the material which is held between the presser-foot and the support, so that large articles*such as quilts-can be readily finished on my machine.

On the front end of the shaft U is mounted a disk u, Figs. 1 and 4, having an eccentric wrist-pin a", which connects with an arm a mounted on a rock-shaft A, on which is also mounted the shuttle-driver B. (Best seen in Figs. 8, 9, and 10.) On the upper end of the shuttle-driver is firmly secured the cradle C, which carries the shuttle D, and which is provided with ahook c, that catches over the nose of the shuttle. \Vith this cage is combined a latch E, which swings 011 a pivot c and is provided witha spring-catch F. (Best seen in Fig. 8.) If this spring-catch is drawn back, the latch Edrops down as far as the stop f will permit-that is to say, to such a position that the shuttle can be readily withdrawn from the cradle. If the sh uttle is again placed into-the cradle and the latchis moved up, it (the latch) is locked automatically by the spring-catch F. By these means the operation of removing and reinserting the shuttle is materially facilitated.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination, in an organized sewing-machine, .of a presser-foot F", a work-support W, an upper oblique cam M, connections between the latter and the presser-foot, a.

means for operating the cam, substantially as described.

3. The combination, with the feed-lever S and feed-cam T, of two rock-shafts t" 70, one above and the other below the cloth-plate A, an oblique cam M, connected to the rock-shaft c", the feeding presser-foot F", actuated by the oblique cam M, an oblique cam P, and the work-support WV, actuated by this cam and situated directly beneath the presser-foot, substantially as described.

4. The combination, with the stripper G and the stripper-slide G, of the feeding presser-foot F and its bar F, the universal joint H, made to connect the presser-bar with the stripper-slide, the slide K, the lever J, the universal joint Z 70, made to connect the presser-bar with the lever J, the oblique cam M, and means for imparting to the oblique cam a rising-and-falling and a rotary motion, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses. 7

DAVID H. COLES.

Witnesses:

J. VAN SANTVOORD, ERNST F. KASTENHUBER.

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