USRE2578E - Alfeed b - Google Patents

Description

FFICE.

ALFRED B. ELY, 0F NEKNTGN, MASS., SSlGlEE 0F REUBEN iV. DREW?.

iMPR'-VEMNT EN SEWSNGMACHENES Specification forming part of Letters Patent No. 33,677, dated November 5, 186i; reissue No. 2,578, dated April 30, 1367.r

Division A.

To whom jit may conoermi Be it known that REUBEN W. DREW., oi' Abington, inthe State oi' Massachusetts, has :invented certain Improvements in liiechines for Sewing on the Soles of Boots and Shoes,

which are folly described in the Atollen-ing specifications and accompanying drawings.

Figure l is a perspective View oi the ina: chine. Fig. 2 is a vertical section of a side elevation. Fig. 3 is a frontview of the parts iiinderneeth the table. Fig. Li is a View oi' the adjusts-hic eccentric.

A. patent has heretofore heen issued to one Lyman R. Blake fore, lmachine in which a rest was placed on the end of an arm to reach in to the toe of a shoe, but it was not adapted to sewing around toes or heels, or otherwise around circles or short curves or angles, as no eicient means were provided for placing the 'thread across the barb of the needle as -the Work progressed round a curve, or keeping 'the needle and thread iii the saine relative position to the changing line oi the seam, hesides other deficiencies in practice.

These improvements, which ore considerable in number and importance, have regard,

` among other things, to such a construction and arrangement of the parts that the lines of the arm shall he straight instead of in a curve; that the-needle andits adjustments, as also the thread-guide, may he continuously revolved, and correspondingly changed in position for sewing circles, cnrves,`and an giesthat is, that the needle may he presented to the Work resting on the arm and thread, in such manner that the barb oi' the needle shall strike at right' angles t0 the line ot' seam, While the thread shall he laid across the barb of the needle and in the line ot' the seam; that the throw of the eccentric or crank, and also the length of the needle-bar, may he altered and adjusted for diiierent kinds and thicknesses ot' Work; that the feed may foi-1n a guiding-point for the needle and space the stitches; and that the cast-oft' as Well as other parts may eo'ni'orm to different thicknesses of material, while it also forms a support for the needle.

- v The following is a' description of the drawings and. machine: Ar is the hody or traine, B is the standard il, the goose-neck, haring strapped to its end e hollow chanihered revolving cylinder, EE, through whic i passes the needle-oar, and in which are placed the devicesi'or operating, hy inea-ns ci' the needlehar, the castoii' and B is the main si1art,nnd E the i'ialancerrheel. F is anadjnstahle eccentiic'on the' it D, G being the eccentric-rod, the strap of which is tightened op at p". The upper end of the eccentric-rod is pivote-d at d to one end of a Walking-beam, H, oscillating neer the center ot' the goosenecit at l). To the other end of the Walking?l hen-n1 at o is pivoted a. strap, d, with a prejeotinp; tongue or pin, of', on the under side. This pinA o" passes through one end of a. sinaii har or cap-plate, c, and is confined at a greater or less altitude hy a setscrew, g, i'or the purpose of graduating the length oi' the needlehar when the throwei' the eecen tric is changed so as to keep the lowerinost point of descent oi" the needle unchangedn ".lo the other end oli' this plate e the needle-har I is hung and pivoted oy means of the screw or heltf. The needlebar l, with a barbed needle,`J, at its end, passes through the cylinder S, while, h5' vmeans ot' the feather e on its side, taking into a corresponding' groove in the head of the cylinder, the needle-har, 'with its accessories, revolves with the cylinder' freely in either di ree'tion, and can he operated in any position of its revolution. i( is the arni placed at an acute angle with the bed ot' the machine, and fastened toit at f". This angle is such as to enable the rest it, at the end ot' the arm', to enter freely into the toe ot' the hoot or shoe. The lines ot' the arm. are straight instead ci' curved. L is a eaincyiinder hung so as to be moved longitndinallyon the main shaft D, and revolving` with the shaft by means ci' theieather e on the shaft taking into a corresponding groove in the cylinder. t the end, and on a collar or" this cam-cylinder, is a strap, y, in which the cam-collar revolves. Freni the rear oi' this strap y projects a pin, e, extending' through a siot, (t, cut in the running in,the cam-groove h.

rear side of the machine-frame. h is a slotted cam-groove cut in the cylinder L, in which plays a friction-roller, 'M is a bent lever pivoted to the bed-plate of the machine at j, and having at one end the" friction-roller@l By this means a lateral reciprocal motion, as the cam L revolves, is given -to the other end of the lever M, which is slotted perpendicularly at k. N is a straight ratchet or gearedbar runnin g in ways m m across the under side of the machine, with its gear-teeth at an angle correspondiu g with that of the arm K, and having at one end a pin, l, projecting downward and into the slot k of the bent lever M. By this means a reciprocal motion back and forth across the machine is given to the bar N. O is a rod passing up through a supporting-box, o, and the lower side of the arm K, and having a gear-wheel, n, at the lower end, the teeth of which take into the teeth of the bar N. By this means the reciprocal motions of N oscillate or rotate back and forth the rod O. The upper end of O is geared beveling at p, and these gear-teeth take into the gear-teeth of a circular thread guide or whir, r, in closed in the rest R of the arm K. Thus while the needle is recprocated up and down by the action of the eccentric walking-beam and needle-bar,

the thread guide or whir is reciprocated round and back for the purpose of presenting the loop to the needle by the action of the cam,

bent lever, geared bar, and gear-rod, and this presentation of the loop can be properly made Whatever the position of the needle.` On the top of the rest R is a small plate, fastened down by a screw at q. T is the cast-oil', made with a circular eye embracing the needle at u', and U is the feeding-point, both being operated by the motions of the needle-bar. The

feed-point U is made fast by a set-screw to a.

plunger, 5,7which extends upward into a chambered feed-rod, 3, which is pivoted to the upperhead of the cylinder at 4, and has a lateral play on this pivot. Within the chamber of the rod 3 is a spiral spring, 6, to press the feedpoint to the work. On the opposite or back side, Fig.'2, upward from the plunger 5, extends a rod, d', with a pin,`c, projecting back- Ward near-its top. j is a dat spring, fastened to the cylinder at k, and pressing the rod 3 and feeding device outward and away from the needle. The cast-od T, with its hollow pointu encircling the needle, and materially strengthening and aiding it in drawing up the stitch, is made fast by a set-sorew to a plunger, 8, which passes through a hollow rod, 7, fastened to the lower head of the cylinder S, and having a spiral spring, 9, in its upper part to press the cast-oli' to the work and adapt it to different thicknesses oi'matcrial. At the upper end of the plunger 8 is a small notch, h, into which the shoulder of the spring g takes when it ascends. l() is a thin slotted sliding plate on the `under side of the lower head of` the cylinder, surrounding both the swinging Arod 3 and the needle-bar I, and held up to cylinder by screws through the slots at w. g a flat spring fastened to the lower head of the cylinder at i, and projecting upward and having a shoulder, as shown.. f is a small plate fastened on the side of the needle-har l, naving a quadrant-shaped pin projecting out from its rear, as shown by red; lines at if.' it is a post rising from the lower head of the cylinder and standing on the' back side oi' the needlearm, to the top of which post, at b', is pivoted a lever, a', one and of which acts underneath and upon the pin c to raise the feed-plunger 5. To the other end isV fastened a small spiral spring, e', fastened at its other end to the cylinder at k. i is alsmall screw or pin project-Y ing from the plunger 8 of the cast-ofi' and sliding up and 'down in a slot, gsof the hollow rod 7. j is a cam-projection fastened to the needle-bar below the cylinder, and capable of he ing adjusted to any proper height, having a step and an inciine, the one to strike a reinst the pin i and raise the cast-oli' plunger the other to strike against the sliding plate le), and, by moving it inward, give a side swing to the feed-bars 3 and 5 andV feed-point U toward the needle.

When the needle-bar I descends the projection l" strikes upon the top oi one end of the lever a', Vforcing the other endnpward against the pin c', and thus raises the feedpoint. The lower edge of the plate f', striking against the -top ofthe spring g and pressing it back, `releases its shoulder from. the

notch h" in the cast-oft' plunger and allows' the cast-oli' to'descend and rest npon the per surface ofthe material. When the needlebar ascends the step in the cam-prejectionj meets the pin e" and raises the cast-od' till the shoulder ot the spring g"takesinto the notch. h, and holds it suspended till the needle again descends. At the same time (the pressure oi' the quadrant-shaped pin Z upon the lever a having been released l the feed-plunger descends, and the incline on j', striking against the sliding plate 1 6, inoves inward the feed..

point toward the needle, when it is ready for another descent of the needle-bar.

b and e" are straps for supporting and holding the cylinder S to the goose-neck (l, allowing it t0 turn freely round.: Y, Fig. l, is a volving standard, bracketed to the goose-neel; at the side and back of the revolving cylinder S. This standard has a gear-wheel, 2, on its top, meshing into the geared head l ot the cylinder. Z isa wheel at the bottoni oi the standard, for handling and turning it by hand. V is a bent lever pivoted to the lower nach side of the frame at X', and having pivoted to it at one end the connecting-rod 'W, which extends up through the standard B, and is 'pivoted at its upper end at e to a cross-beam, X, which oscillates at u upon bearings, andhas at its further end a friction-roller, t, which runs in a cam-slot, s, cut in the periphery of the revolving cylinder S. At the other end ci' the bent .bar N, and rod O, the thread guide or whir r `is correspondingly revolved with the revolutions ofthe cylinder S and the needle-bar and needle, so that in this manner, while the position of the barb of the needle is changed, the position or direction of the thread is corre spondingly changed, each preserving to the other the saine relative position to enable the needle to take up the loop andthe operator to sew around corners and curves or angles, the object being to keep the direction of' the thread along the line of seam and across the barb of the needle, so that `the needle shali strike with `its barb perpendicularly to the line ofthe scam, (the slot of the barb being in the line of the sea1n,) While the thread is thrown across the barb and in the line ofthe sea-n1.

In sewing'boot and shoe soles the needlebarb should enter at ri ghtV an gies to thc edge, and the thread must be laid across it parallel with the edge of the soie; and in going around the toe, the thread and thread-guide, iollowing and conforming to the curvature ofthe material and seam, must constantly change their throw so as to strike across the barb of the needle with their loop.

Ordinarily, in the sewin g of curves, dsc., it is necessary to control the movement step by step as the work progresses, and for this reason l1 have adapted the standard Ywi th its handle Z, that I may control the change and revolutions ofthe needle and thread guide or whir, stitch by stitch. But in order that a regular change of the position of the needle and thread, in cases where a certain defined circle, or part o' a circle, is to be sewed, may be made automatically, the following mechanism is devised: k' is a bent lever, on the outside of the gooseneck pivotcd to it at l. 'm' is a pin, iixed in the rear end oi' thc walking-beam H, and passing through a slot in the upper end of the lcvcr k at n. To the other end of lever k' is pvotcd, at one end of it, a rod, o', having its other cud pivoted at 1" to a projection, s, on a Strap, e, passing round the cylinder S, and moving loosely on it. d is a circle ol' geartceth, cut in the periphery of the cylinder S, or on au annular' wheel secured thereto innuediately above the strap c. t is a forked dog, with a handle, q', pivotcd ou the projection s ol' the strap c at r', and having a spring, fw', so arranged that either or neither oi" the ends `of the dog t may take into the gear-teeth d.

In this way, the up-und-down motion of the walkuig-beam being communicated by the pin m through the lnnl` lever l." and rod o to the dog l', the cylinder is revolved either way, or not at all, at will. In a bracket, fastened to to the standard B at m, is hung the spool l) in bearings at rr gf, the latter being in a llat spring, n, set into the back of' the bracket and parallel with the end. A set-screw, z, passes through the further end of the bracket and strikes against this spring n and regulates the tension on the spool. q is the thread, passing through the channel Q and up through the threadguide or whir r. l also use an adjustable eccentric, so as to change the throw of the eccentric or crank, &c. O is an elongated shaft-hole of the eccentric F, the strap of the eccentric-rod being,` tightened up at p. q r is a face-plate and collar, on the main shaft l), havin g a set-screw, n, through the collar behind and opposite 0" to secure it io the shaft. Through the face-plate are two slots, if', with set-screws s" to secure the eccentric to the .lace-plate at any position in the slots.4 With these slots and screws and the elongated shaft-hole of the eccentric, am enabled to change the position of the eccentric to the shaft, and to alter and adjust the throw oi the eccentric as I mayind desirable, and adaptit to diii'crent thicknesses and quality of material. ly means of the pin o, in the cap-plate c o the needle-bar, and the set-screw g, I am also enabled to alter and adjust the operating length of the needle-bar, so that while I alter the throw of the eccentric I am enabled to preserve unchanged the point to which the needle must descend to take the loop. The leerling-point U, striking ou and into the material in advance of the needle, and feeding up the work, spaces the distances between the stitches, aud forms a guidingpoint for the needle, impressing the place where it shall strike.

The method of forming the stitches in qucnce is as follows: The thread having been carried up through the thrczui-guide, the shoe is placed ou the arm with the restinsidc. The needle is brought down through the sole, upper, and insole into the whir. When at its lowost point the whir is thrown around and the thread laid across the barb. rlhe needle is retracted, drawing up the loop. rlhe shoe is l'ed Forward one stitch, and the needle again descends. 'lhc loop is shed i'roxn the barb, the cast-oli' descends to the work, and the loop is now round the cast-oli' and needle. The 'needle takes another loop and ascends through the former loop. rlhe cast-oil.' rises andthe needle draws up the stitch. The shoe is then l'cd ibi-ward aga-in, the needle descends each time through thc sole with its barb across the liuc of scam, and the thread is thrown across the barb iu the line of seam, and this is done following any curve ol" the work. To this the revolution ot' the whir is necessary.

(Harinas.

i. Rotating and operating positively the thread-guide, within a supportinghorn for entering the work so that tho thread shall be laid in the path of the hook of the needle, whatever the form, direction, or length of seam, by means substantially as described.

2. Rotating; and operating the thread-guide or wliir by means ot' a geared rod, constructed and operati-ng substantially as and for the purposes described.

3. The combination of siiding camL, racki'iar N, rod O, and Whir, or their equivalents, snbstantiaiiy as and for the purposes described.

4. Se constructing and arranging the Whir, i

in relation toits actuating devices, that it may be rotatedand operated by a geared rod, substantially as described.

5. The combination of a' horn, for entering and supporting the Work, with a rotating geared `rod for operating the Whir, and a Whir1 for presenting the loop to the barb of vthe needle, substautially.as described.

l A.VB. ELY.

Witnesses: f

COBNELS J mons,

J oHN P. JACOBS.

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