US158633A - Improvement in machinery f,qr forming an imitation-stitch upon the soles - Google Patents

Description

I 0'. S. DU-NBRACK & W.'B. VEZEX.

Machinery for Forming an Imitation Stitch Upb'n the Sale of aha} or Shoe.

N0. 158,633, PatentdJ gn.12,1875.

TATES PATENT ()FFIGE.

CHARLES S. DUNBRACK, or swAMrscorT, AND WILLIAM B. VEZEY, or MIL- FORD, MASSACHUSETTS, ASSIGNORS TO THOMAS COREY, TRUSTEE.

IMPROVEMENT m MACHINERYEOR Forums AN-IMITVATION-STITCH UPON THE SOLESDF A BOOT OR 7 Specification forming part of'Letters Patent No. 153,633, dated January 12, 1875; application filed July 3, 1874.

I To all whom it may concern:

"Be it known that ,we, CHARLES S. DUN: BRAGK, of .Swampscott, county of Essex, and

WILLIAM B, VEZEL ofiMilford, county ofv Worcester, in-. the State of Massachusetts, have invented an Improved Machine for Imi- V .tation Fair Stitch upon- Leather and like material, of which the following is a specification: 7 i

The "invention is a machine forimpressing an imitation fair stitch chiefly upon the-out ver and exposed upper-surgface of the soles of boots and shoes. It consists; of angiiiiitatio'nstitch-impressing device, revolving upon a shaft connected with niiafivapgwer. immediately, beneath said.inflitation-stitchdevice is a revolvingfeed wheel supporting the bottom of the sole as its upper'surface passes under the imitation-stitchdevice. Uponone extrem- -ityof the shaft revolving the imitation-stitch device-said device being at the other e'xtrem-.

ity of said shaft-are two ratchet-wheels-of the same size. The teeth of the said ratchet-wheels slope, or have their'longest sides in opposite directions, and one tooth crosses another at the middle of its side, or nearly so. Pawls play into the teeth of the ratchetrwheels, said pawls being connected with an arm or lever on one side of its fulcrum, and on the other end of the arm or lever being joined by a connecting-rod to an eccentric-wheel operated by a shaft driven by motive-power applied to the same. The effect of the machine thus operating is to' move forward the imitationstitch device and"the feed-whecl one notch 'andba-ckwardone-half notch, "so that the impressing imitation stitch is impressed .a'se'cond time, thus makingithe.impiessi'oiiffirifierf and ,Theobject ofiftheinvpntionis to do better work than heretofore accomplished by ma chines for the same purpose. 1

We design to make the machine portablethat is, so that it can be taken into any shop and placed upon a bench or floor, and the power applied to itsmachinery for instant work. And that others skillediu the art may better understand the operation of the machine, we explain that imitation fair stitch impressing deviceE and the feed-wheel D are not new in mechanism or in their operation, except that the feed-wheel D revolves on the end of the lever D as its axis, (see Fig. 2,) and said lever D is joined by a hinge at its other extremity to the frame 0, as shown in Bdldbigi, said lever or arm I)", by means of another lever or arm, D having a third arm,

D and weight D, and a rod, K, and spring K. Thelever J is operated by a treadle-to lower the feed-wheel to put the leather under the stitch device. Said treadle is'not shown in said Fig. 2. The imitationfair stitch deviceE is adjusted to the end of a shaft, E. Upon the otherend of said shaft E, within the posts'O G, will be observed (see Figs. 2 and 3) ratchet-wheels E and E joined together, having the same number of teeth, but the longest side and slope of the teeth run in opposite directions and cross each other, as shown. Into these teeth pawls F and F play. The

pawl-F, operating also as a lever, is attached to and has a fulcrum-pin or screw at one end ,of a lever or arm, F and plays into the ratchet E The other end of saidpawl F is operated by a spring, M, which is also atlever F at the end playing into the ratchet. Said pawl Ff hasa cross-piece, (see Fig. 3,) and oneeiid of said cross-piece plays into the ratchet, and the other end is operated upon by one end of the lever F and said lever F at its other-end, having-a short arm, is operated ,device E, so that while the advance is a whole motion or notch the backward motion is onehalf, and the indentation in the leather is passed over twice by the imitation-stitch "device, leaving a firmer and more perfect impression. Instead of thiseccentric and ratchet movement, two eccentrics, one on shaft E 'with cam movement, instead of ratchets E and E, and on shaft G as now. In Figs. 1 .and 3 will be observed the gear-wheelH, shaft H and crank 11 not used in the movement just described. By unshackling the eccentric G and the pawls F F, lever F and rod F, and shifting the gear H so as to mesh into the gear E we have a hand or power machine operating the forward movement of the imitation-stitch device and the feed-wheel I), accomplishing the same result, though less perfectly. I In Figs. 1 and 2 will be observed the yielding guard I, with its spindle extending upward through arms, with spring 1 around spindle, and two adjusting-nuts, l and 1 The two arms a a, holding spindle, are movable laterally on the guard-holder I, being slotted and held to the guard-holder by screws.

We claim- ,1. In an imitation fair stitch machine, the combination of the marking device 1* and the feed-wheel D, revolving upon a movable lever,

D, substantially as shown, and for the purpose described. 7 V

2. The combination of the ratchets E and E, the pawls F and F, the levers F and F, springs m and m, rod F, and the eccentric G, to produce forward and backward and continuous movement, substantially as shown, and

for the purpose described.

3. The combination of the levers D D D, and weight I), for the purpose shown and described.

4. The combination of the levers D D and J, for the purpose shown and described.

5. The combination of the adjustable guard l, the guard-holder 1 having movable arms an, the spring I, and nuts I and l, for the purpose shown and described.

CHARLES STORY DUNBR-AOK. WM. B. VEZEY.

" Witnesses J. L. NEWTON, v DANIEL F. FLYNN,

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