US511666A

US511666A - Machine for shaping shoe-shanks

Info

Publication number: US511666A
Authority: US
Publication date: 1893-12-26
Anticipated expiration: 1910-12-26

Description

' No Model.) 2 sheets-sheet 2'.

. T. l?. TYLER. MAGHINE Hm sHAPINGs-Hof'; SHANKS.

No. 511,666. y Patented 1360.26.1893.

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UNTTi-n STATES FnTnNT Tries@ THADDEUS FRANK TYLER, OF LYNN, MASSACHUSETTS.

MACHINE FOR SHPING SHOE-SHANKS.

SPECIFICATION forming part of Letters Patent No. 511,666, dated December 26, 1893.

Application filed March 30, 1893.

To @ZZ wiz/0m t may concern:

Be it known that I, THADDEUS FRANK TY- LER, of Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Shaping Shoe-Shanks, of which the following is a specification.`

This invention relates to a machine for shaping leather-board shanks, such as employed in the manufacture of boots and shoes.

The object of the invention is to improve upon the present method of shaping the blanks, which consists in subjecting them to the action of rolls.

In carrying out my invention, I provide a machine which shall mold a blank into the desired shape at one operation; and by which the Shanks can be produced at much less expense than in the old way, by reason of the large amount of time and labor saved.

The accompanying drawings illustrate a construction by which the invention may be carried out.

Figure l shows a front elevation of a machine, with the die-plunger removed. Fig. 2 shows a vertical section, taken on the line 2-2 of Fig. l. Fig. 3 shows a perspective view of a portion of the machine. Fig. t shows a horizontal section, taken on the line a-et of Fig. 3, representing the die-plunger as withdrawn. Fig. 5 shows a similar seotion, representing the die-plunger advanced. Figs. 6 and 7 show detail sectional Views to be referred to hereinafter.

The same letters of reference indicate the same parts in all the gures.

In t-he drawings, the reference letter ct designates the stationary bed of the machine, upon the upper side of which is erected a rigid standard a. This standard is slotted vertically, and provided with a rearwardlyextending arm a2, supporting a rock-shaft as, on which isiixed an arm a4, connected at its outer end with `a pitman, which is indicated in broken lines in Fig. 2 and will be connected with some suitable rotary machine element, such asacrank. An armi) is loosely mounted on the rook-shaft a3, and extends through the slot in the standard a', and engages a pin b of a follower c fitted to slide in guide-ways c on the standard a. A spring b2 connects a projection on the arm b with a stationary part Serial No. 468,267. (No model.)

of the machine, and acts to drawthe follower downward. The stroke of the follower may be adjusted by means of a set-screw b4,which is supported in an arm b5 fixed on the shaft d3, the arm b resting upon the said set-screw. It will be obvious that a reciprocating motion will be imparted to the follower by the mechanism described.

The follower is composed of two members, one of which, c, engages the slide-way c', and, at the end of its downward stroke, abuts a block composed of two wedges d and d', which may be adjusted tothe stroke of the follower. The other member 0f the follower is in the form of a plate c2, which is ixedly secured to the first-named member, and extends over the front face of the machine-bed a, and between the latter and a rectangular frame c fastened to the said bed. The plate c2 is arranged to reciprocate across the opening of the frame e, and the blanks are fed from a chute e into said opening and under the follower, one by one, when the latter is at the upper end of its stroke.

Adjustable plates fare fastened to theframe e at the sides and top thereof, and are provided with iianges whichprojectinto the opening of said frame. By means of these plates, the feeding opening may be adjusted to different-sized blanks.

Laterally-adjustable strips g are fastened on the front of the maohine-bed,and serve as guides for the blank after it has been introduced under the follower.

Immediately below the frame e a lateral sliding plate 7L is mounted, at each side. Each of these sliding plates has a portion h', which projects over the guide-Way down which the blank passes, the plate having a double thickness to form this guide-way, as seen in Figs. 4E to 7. The projecting portions h are beveled at their upper edges, to facilitate the entrance of the blanks behind them, and in order to prevent au upward movement of the blank after being carried down by the follower, a pair of light spring lingers h2 are fastened to the projecting portions 7L', and extend over the beveled edges thereof and partly over the guide-way, so that the bla'nk willdisplace them, as it is moved down by the follower, and the said fingers, springing back into place after the blank has passed, will pre- ICO bed, the tension of these springsbeing adjusted by means of screws 7c', engagingfheads k2 on the plates and against which the springs bear. kLock-nuts 7a3 are employed to hold the adj usting-screws at any desired position.

yA female die m is countersunk in the front face ofthe machine-bed, and its cavity fm isl curved'in the direction of its length, and its sidesandf'ends are beveled.

A' die-plunger 'n' is mounted in any suitable manner, so as to be reciprocated toward andi away from the front of the machine, and this plunger carries the male die fn', which is curved in the vdirection of its length to conform'to'the curvature of the female die, and is for-lned'with a cavity similar to that of they female die, said cavity having beveled sides and ends.

The sliding plates h carry blocks h4, whose inner sides are beveled, and projections ont1 the sides of the diep-which, in the present in`- stance, are screw-heads hr-encounter thee beveled sides of the blocks h4 as the die-plunger "approachesthe female die, and the platest hare thereby moved outward so as to permit the passage of the die-plunger. provided for locking these plates in their outer positions until the die-plunger is withdrawn, and, in the present instance, this is@ accompllshedbymeans of sliding pins o, car-` riedv bythe plates and actuated by springs o which project them into depressions o2inthe" machine-bed when the sliding plates are moved outward in the manner already de-E scribed.'4 Said sliding pins have laterall 'portions 03, extending over the upper side of thedie-plunger, and the latter is provided with projections shown in the present instance as studs o6, which encounter the lateral portions ofthe vsliding pins upon the withdrawal of the plunger', and thereby disengage the sliding pins from the depressions o2 and permit thelslidingplates to move inward again to' their normal positions. The construction and operation o f'these sliding pins are best illustrated'in Fig. 7. f'

Sliding. ystuds p project from the faces of the'lnale yand female dies, and are pressed outwardby springs p', inserted behind them.' henthe die-plunger approaches-the female die, the'studs engage opposite sides of the blank" and Ihold it in position as it is compressed in the dies. l

The operation of the lnachine,briey stated,

Means are'y is as follows: The blanks, aspq (seeFig. 3), are set up on ledge in the chute e', and are pressed forward by any'suitable means, so that `each time the follower aseen ds a blank will be thrust into the guide-way below it, and, upon the follower descending, it will encounter the said blank and carry it down behind the projecting portions of the plates h and into a position directly in front of the cavity of the female'die.' As the die-plunger 'a advances, the sliding plates h are pushed outward in a manner hereinbefore described, and the male die n comes against the blankand presses it intothe'cavityof'the female die, the springpressed studs p preventing the blank from shifting. The lcurvature of the diesifin the direction of their length-imparts the desired curvature to the shank, and at the sametime the edges ofthe blank-are compressed by the beveled sides of the dieandabevcl thus impartedv to the edges of. the blank.v Thedieplunger is withdrawn, and the finished shank is removed in any suitable way. A Adjustable gage-arms a" are arrangedat the lower endof the feedingguide-way, for the blankrt restupon in its4 proper position linfront of'ftlie cavity of 'the-femaledie In the present-instance, these arms are pivotedat points frto the plates h, and are adj usted by Vmeans of slots r2 in said plates and set-screws r3 extending through said-slots'andengagingtthe arms a". It will be seen that-,witha machine of this kind,`leatherboard shanks maybe.

turned out Vwith'great rapidity and-atl agreat savingof time and labor, as compared with the old methods I i f It is evident that! theinvention-'may be embodied in different forms fromthat here shown; Ihereforel amnotlimited to theparticular form in which-I have/chosen-toillustrate the invention. Y Havingthus describedmy invention, what I claim as new, and desire to secure -b'y Letters Patent, is-y v y 1. A moldingllnachine, comprisingl-inits construction a guide-wayiintewhicli? the blanks are `fed'one by one, a-follower insaid-guide Way, laterally-movable guide-fplatesi'projecting over opposite sides ofV the vguide-way `and behind which-the blank-is carried bythefollower, and a die-plunger'reciprocating;at

right angles to the 'guidewayI and-adapted to spread the guide-plates as-itadvancesfupon the blank. l j

d 2. Amolding machine, compr-isingin its construction a guide-way'into which theblanks are fed one by one, a follower in said1 guideway, laterally-movable 'guide-plates proj eeting over opposite sides ofthe guide-way and behind whichfthe blank is:l carried by thefollower, said guide-platesbeing-yieldinglyheld against the surface -at each side of theguideway, and adie-plunger reciproeatifngfat right angles to the guide-way and! adapted' to spread the guide-'plates-'as it advancesupon the blanks.'

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3. Anioldingmachine, comprising inits construction a guide-way for the blanks, a feeding follower in said guide-way, guide-plates yieldingly held in a position where they project over the guide-way and provided with beveled projections, and a die-plu nger having lateral projections adapted to encounter the beveled projections on the guide-plates as said plunger approaches a blank, as and for the purpose described.

4. Amoldin g machine,oornprising in its construction a guide-way for the blanks, a feeding follower in said guide-way, guide-plates yieldingly held in a position where they project over the guide-Way and carrying sliding spring-actuated pins adapted to engage depressions in a stationary part of the machine, and a die-plunger adapted to spread said guide-plates as it approaches ablank, and pro- TIIADDEUS FRANK TYLER.

Witnesses:

NELLIE HAMMOND, IRA B. KEITH.