US317759A - Peters - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

Z. T. FRENCH.

SOLE SEWING MACHINE. No. 317.759. Patented May 12, 1885.

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' Z. T. FRENCH.

SOLE SEWING MACHINE. N0. 317,759. Patented MaylZ, 1885.

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, SOLE SEWING MACHINE.

No. 317,759. Patented May 12, 1885.

llNl-TED STATES PATENT tries.

ZACHARY T. FRENCH, OF BOSTON, MASS, ASSIGNOR TO THE GOODYEAR & MOKAY SEWING MACHINE COMPANY, OF HARTFORD, CONN.

SOLE-SEWING MACHINE.

SPECIFICATEON forming part of Letters Patent No. 317,759, dated May 12, 18185.

' Application filed October 27, 1884. (No model.)

To aZZ whom it may concern:

Be it-known that I, ZAOHARY T. FRENCH, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Sole-Sewing Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to that class of solesewing machines adapted to sew turned-work or to attach welts, and is an improvement on United States Patent N 0. 190,709.

In the operation of the machines referred to it sometimes happens that the curved needle becomes sprung and draws the needle-guide back with it too far, and the guide held by the bent or sprung needle remains at or near the needle-segment rather than near the point of the needle, as it should do, and consequently, as the needle is moved to enter the stock, the guide fails to support the needle immediately back of its hook or barb.

To obviate this difficulty I have devised mechanism whereby the guide is moved positively in both of its directions and is always kept near the point of the needle when the latter is entering the stock; and one part of my invention, therefore, consists, essentially, in the combination, with a needle-segment, of a curved needle, and a needle-guide provided with a pin and a projection or shoulder, combined with a block, and an independentlymovable lever to operate as will be hereinafter described. I have also provided means for altering the length of the loop to be drawn by the needle, and also means for positively moving the welt-guide, as will be explained.

Figure 1, in front elevation, represents a sufficient portion of a sole-sewing machine to illustrate my invention; Fig. 2, a section in the line 00 m, Fig. 1; Figs. 3 and 4, details showing the sticker-bar and means for moving it. Fig. 5 is a section of Fig. 1 in the line m m. Fig. 6 is a detail in side elevation of the needle-segment and its connected actuating-link. Fig. 7 is a detail in elevation of the needlesegment, needle, and needleguide; and Figs. 8 to 10 are details to be referred to.

The needle-segmenta, curved needle a, the

block I) attached to it by the screw 2, the seg- 5o ment race or block in which the segment is reciprocated, the needle-guide b, the sticker 0, the welt-guide (1, its slide (1, the welt, the levers d (P, link (i rock-shaft d cams to move the levers (1 (P, the looper c which supplies the thread, the awl 6, (shown only in dottedlines,) which punctures and feeds the stock, and their operating devices, and the cam which actuates the lever e are all as usual in sole-sewing machines, so need not be herein fully described. The stud f, which receives the needlesegment and which connects with the bracket f by means of the screw 3, has applied to it, between the needle-segnient and the head 4 of the said stud, the needle-guide Z), which is provided with a toe or projection, 5. and with a pin, 6, the latter being free to move for a certain distance in a recess, 7, (see Fig. 9,) in the head 4. The studfhas at its outer end a shouldered screw, j, which receives upon it the guide-moving lever g, provided with a shoulder, 8, (see Fig. 10,) which, as the lever g is turned, acts on the pin 6 of the needleguide and forces it toward the work and the end of the needle a. The lever g, joined by a spring, 9, with the short arm of aleverlike link, g", having its fulcrum at g on the block I) attached to the needlesegment, is adjustably attached to the lever c by a bolt, extended through a curved slot, g of the said lever, adjustment of the bolt in the said slot causing the loop to be drawn longer or shorterthe nearer the bolt to the fulcrum e of the lever e the shorter the loop, and vice versa-the lever and link in any of its 8 5 adjustments always causing the point of the needle to descend to the same place. At each upward movement of the needlesegment the shoulder 10 of its connected block b strikes the toe or projection 5 of the needle-guide and 0 causes the latter to be lifted with the needle and to remain just above the barb of the needle to support the latter while the loop is being drawn to make the stitch; but at each descent of the needle-segment the spring connected 5 with the short arm of the link as the link commences to move the segment to cause the needle to enter the stock, compels the needleguide-moving lever g to turn on its fulcrum and act upon the pin 6 of the needle-guide,

thus forcing the latter toward, and so that the guide will always be brought close to, the work while the point of the needle is entering it, thus always supporting the needle correctly while it penetrates the work.

In solesewing machines upon which this invention is an improvement the welt-guide has been moved forward by means of a spring and backward by means of a pawl; but such construction is objectionable because the spring sometimes failed to throw the weltguide forward at the proper time so as to place the welt in proper position, and in case the guide was not properly moved forward the lever 0 in its descent to move the needle-segment, would strike against and break off the welt-guide. To obviate these difficulties I have provided means for moving the weltguide positively in both direction, such means being, as herein shown, (see Fig. 2,) the lever d, operated by a suitable cam, andthe slotted link (P, which embraces the screws tad d projecting from one side of the welt-guide slide d. In the slotofthislink d (see Fig. 2%) I have placed a block, 12, having a screwstud, 13, by which to adjust and secure the same in the slot of the said link, thus shortening or lengthening the said slot as it is desired to shorten or lengthen the throw of the welt-guide, the throw being shorter with light work. The spring d normally acts to keep the slide forward with its pin 14 against the adjustable stop 15, but in case the said spring (1 for any cause fails to bring the welt-guide forward, then the link (i in its forward movement, preparatory to the entrance of the needle in the work, acts against the screw-stud d and carries the welt-guide forward into correct position. After the needle arrives at its lowest position, and while it rises to draw the I loop, the welt-guide slide d is locked in its forward position by means of a pawl, 16, which engages a toothed block, 17.

In the machine represented in United States Patent No. 190,709, the sticker, (herein marked 0,) which enters the stock to hold the shoe in position while the stitch is being drawn, and which sticker acts to prevent the stock from being torn, is operated by a pin which enters a groove in the sticker-shank; but such construction is objectionable, as the single pin soon wears out. To obviate this I have provided the sticker-bar h with a series of teeth, and on the rock-shaft d" I have placed a gear, h, to engage the teeth of and move the sticker-bar, and to avoid cutting away a part of the pin which holds the needle-segment, as has heretofore been done to bring the straight sticker-bar in proper working position, Ihave somewhat extended the bracket f and placed the shank of the sticker-bar therein in front of the stud f, and have offset the lower end of the sticker-bar to receive the sticker, as shown best in Fig. 4.

The hollow tubet is employed to conduct heat in usual manner to the thread-controlling pulley 15 I claim- 1. The needle-segment, its attached curved needle, and the needleguide provided with a pin, 6, and a toe or projection, 5, combined with the block b and with the independentlymovable guide-moving lever, to operate the needle-guide, substantially as described.

2. The link 9', the needlesegment with which it is connected, the stud to support the said segment, and the needle-guide mounted loosely on the said stud and provided with a pin, 6, combined with the gnide-moving lever g and spring connected with the guide-moving lever, to operate substantially as described.

3. The needle-segment, the needle, the needle-guide, andlink g, combined with the lever 0', provided with a curved slot to receive the bolt by which the said link is adjustably connected with the said lever, the adjustment of the bolt in the slot altering the extent of movement or throw of the needle in but one direction to vary the loop drawn by the needle, substantially in the manner and for the purposes described.

4. In a sole-sewing machine, the welt-guide and the welt-guide slide, combined with means, substantially as described, to operate the said slide positively in both directions.

5. The welt-guide slide provided with the screw-nut d, the lever 01*, slotted link (2 and the adjustable block to Vary the extent of the positive throw of the said welt-guide slide and its attached welt-guide, substantially as described.

6. In a sole-sewing machine, the sticker-bar provided with teeth and offset, as described, combined with the gear h and the rock-shaft (Z and means to move it, substantially as described.

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

ZAGHARY T. FRENCH.

Witnesses:

G. W. GREGORY, B. J. NoYEs.

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