US672611A - Guide-operating mechanism for sole-sewing machines. - Google Patents

Description

N0. 672,6". Patented Apr. 23, mm.

- F. E. BERTRAND.

GUIDE OPERATING MECHANISM FOR SOLE SEWING MACHINES.

, (Application filed Oct. 11, 1900.)

(No Model.)

....fiIIIIIIIHIIH-IIII 1 F3. fly 5 IIIIIIIIIIIIIIIIIIIIIIIII I so Invader. EedtrzlcEflerlr,

UNITED STATES FFICE.

PATENT FREDERIO E. BERTRAND, OF BOSTON, MASSACHUSETTS.

SPECIFICATION forming part of Letters Pateilt No. 672,611, dated April 23, 1901.

Application filed October 11, 1900. Serial No. 32,711. (No model-l To all whom it may concern:

l I Be it known that I, FREDERIC E. BERTRAND,

of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Guides for Sole Sewing Machines and Mechanism for Operating the Same, of which the following, taken in connection with the accompanying drawing machines and mechanism for operating ings, is a specification. v

My invention relates to guides for sole-sewthe same; and it consists in certain novel features of construction, arrangement, and combination of parts, which will be readily understood by reference to the description of the accompanying drawings and to the claims hereto appended and in which my invention is clearly pointed "out.

Figure 1 is a side elevation of a sole-sewin machine to which myinvention is applied. Fig. 2 is a front elevation of so much of said machine as relates to my present invention. Fig. 3 is a sectional elevation, the cutting plane being on line A A on Fig. 2 and looking toward the left of said figure. Fig. 4 is an elevation of the parts shown in Fig. 2 looking toward the right of said figure. Fig. 5 is a partial sectional elevation of the same parts on line B B on Fig. 2 looking toward the right of said figure, and Fig. 6 is a plan of the supplementary guide.

In sewing the outer soles of boots and shoes to the welts it is desirable that a suitable mechanical guide or guides should be employed to properly determine the distance of the line of stitching from the edge of the sole, which usually extends at a uniform distance from the edge of said sole entirely around the sole,

, 1 and the work support or table is constructed and arrangedto also serve as a guide for the boot or shoe by bearing against the upper on the last at its junction with the welt all around the shoe, if the projection of the sole is uniform throughout. 'If, however, the boot or shoe is to be finished with a Baltimore edge, so called, in which the sole has a considerably greater projection on the outer side of the ball than upon the inner side, it becomes necessary to provide a supplementary guide, which shall be readily adjustable to vary the distance of the line of stitching from the junction of the upper and welt, the boot or shoe being guided by pressing the rough rounded edge of the sole into contactwith bearing in its front edge the endewise movable bar 4, having secured to its lower end the presser-foot 5 and having setin its upper end the stud 6, upon which is mounted the block 7, which is embraced by the forked end of the lever 8, by which and a suitable cam acting upon its rear end said bar and presserfoot are moved in one direction,while a spring attached to the rear arm of said lever, but not shown, moves them in the opposite direction, all as described in said before-cited patent. In the awl-segment 3 is mounted the awl 9. 10 is the work-support, and 11 is the shuttle-race, all of which are constructed, arranged, and operate in connection with a curved barbed needle (not shown) substantially as in said prior patent.

The pendent arm 2 has formed in its lefthand side a shallow .rectangular groove extending transversely thereof, in which is fitted, so as to be movable endwise therein, the guide-plate 12, provided at its front end with the laterally-projecting guide'finger 13 and having formed in its upper edge a series of rack-teeth, and also having cut through its main body the slot 14, through which the stud 15, upon which the awl-segment 3 is mounted,

passes and then through the arm 2-, in which teeth of which engage the teeth on the upper edge of the guide-plate 12, and has secured to its opposite end the gear-segment 19,

with which a toothed segment, formed on the lower end of the lever 20, engages, asshown in Fig. 3. The lever 20 is pivoted at 21 to the right-hand face of the arm 2 and extends upward between the stand 22 and the bar 23, and adj ustably secured to said stand 22 by the clamping-bolts 24:, said bar 23 having secured to its inner facethe stripv of leather or other suitable frictional material 25, whereby said le-veris held in the desired adjusted position until force is applied thereto to readjust it to a new position.

The lever 20 has set therein or formed thereon above the stand 22 the lug 26, in

which is adj ustably fitted the threaded stopscrew 27, the front end of which contacts with said stop-screw 27.

the rear face of the steam-box 28 or any other convenient fixed part of the machine when the front. of the guide-finger 13 is in its fore-f most desired 'position'for the meantime, such position. being regulatedby the adjustment of The operation of my invention is as follows: The several parts of the machinebeing' inthe position shown in Figsf2, 3, t, and of the drawings, the boot or shoe is placed in position, with the welt resting upon the worksupport 1O at theheel-seat, with the toe of the 5 per on the last pressed hard againstthe front shoe toward the right, of Fig, 2 and the upedge of the work-support, with the presserfoot bearing 'upon the tread-surface of the sole,"and thelguide-finger 13 to a position at ajdistance a to the rear of'the path of the needle where it enters the work equal to the desired distance of the line of stitching from the rough rounded edge of the sole. The

shoe is then'fe'd toward the left until that "part of the sole is reached where the projection from the upper begins to increase, when theoperator gradually moves-the upper end ofthe lever 'toward the front, while the sewing continues atsuch a speed that when the point inthe soleis reached where. the divergence from the upper'ceases the front end of-the stop-screw 27 comes in contact with the upper end'ofthe lever 20is gradually =n1ove'd to the rear, therebymoving the guidefinger- 13'to the rear at such a rate of'speed' relative tothe feed of the shoe that when the stitched to the welt.

the steam-chest 28 or anyother fixed portion of the machine and said forward motions of the lever" 20 and the guide-finger 13 are arrested. The sewing continues tothe point where the curve of the toe commences, when center of the curve of the toe has reached the needle the guide-finger will have receded to r its former position and the upper is again in 55 contact with the'front edge of the work-support, which. serves as the guide for the shoe while the other half of the sole is being The foregoing refers to the stitching of a boot or shoe for the left foot; having a Baltimore edge. When the mate to this boot or shoe is to be stitched,

the shoe is placed in the same position on the work-support and the shoe is fed forward, with the upper bearing against the edge of the work-support until the'center of the curve of the toe has reached the needle,

when'theupper end of the lever 2 Ois grad- I ually moved forward to move the upper away from the edge of the work-support until the end of the stop-screw 27 comes in contact with a fixed portion of the machine and the stitching around the toe is completed, [when the work continues to be fed toward the left without further movement of said lever 20 'orthe guide-finger 13 until the rear of the ball is reached, when the lever 20 is gradually moved backward, thereby causing a rearward movement of the guide-finger 13 until the upper bears against the edge of the work-support, which again serves as a guide while the shank is being stitched.

. What I claim as new, and desire to secure by Letters Patent of the United States, is 1. In a sole-sewing machine the. combination with'a Work-support constructed and arranged to bear against the upper in close proximity to the welt, to guide the shoe while sewingthe shank; a resser-foot; a stitchforming mechanism, a feed-slide provided with a pende'nt'arm and an aWl-segment car-, ried by said arm, of a supplementary, adj ustable guide-plate provided with a laterallyprojecting finger and a series of rack-teeth and mounted in a bearing extending transversely, from front to rear, of said arm; a

rocker-shaft mounted in a bearing in said arm at rightangles to said guide-plate and provided with gear-teeth which engage the rackteeth on said guide-plate; a toothed segment carried by said rocker-shaft; a pivoted handlever having a toothed segment formed thereon, and engaging the segment on said shaft, whereby a movement of said hand lever about its pivot will cause a partial rotation of said rocker-shaft and a reciprocation of said guide-plate.

2. In a sole-sewing machine the combinationwith a work-support constructed and arranged to also serve as a guide for the shoe by contacting with the upper in close proximity to the welt, a presser-foot, stitch-forming mechanism, a horizontally-reciprocating feed-slide provided with a pendent arm, and

an awl-segment carried by said arm, of the guide-plate 12 provided with the finger 1'3'and ried by said arm, of the guide-plate 12 provided with the finger 13 and witha series of rack-teeth; the rocker-shaft 17 the gears 18 and 19 carried by said shaft; the pivoted lever 20 provided with a tooth-segment to engage gear-teeth on said shaft; a friction name to this specification, in the presence of device to act upon said lever to hold it in the two subscribing witnesses, on this 6th day of desired adjusted position; and an adjustable October, A. D. 1900.

stop,constrnctedand arranged to contact with FREDERIG E. BERTRAND 5 some fixed part of the machine, to limit the Witnesses:

forward movement of the guide-plate 12 13. N. G. LOMBARD,

In testimony whereof I have signed my J. HOUSTON STEVENSON.

Images