US70139A - warfield - Google Patents

Description

y @uiten tatrs atut @ffice IMPROVED MACHINE FOR SHAPING BOOT-HEBLS. l

dire SrL-chuis mann to' iu tlgcsc ilcitas 331mm u1u nmkiugjnirt nf the sume.

TO ALL-'W HOM IT MAY CONCERN: i

Beit known that I,VGE0R GE'W. WARFIELD, of Hudson, in the county of Middlesex, and4 State of Massaehusetts, have invented an improved Machine for Shaping or Trimming the Heels of Boots orShoes; and do hereby declare the following to be alfull, clear, and exact description thereof, reference being. had to the accom- Ashaft, 1t, an endless belt, o, travels, and puts the said shaftj in rotation.

panying drawings, making part of this specification, and in whieh Figure 1 is a. side elevation,

Figure 2 a front end elevation,

Figure 3 a plan, and Figure 4 a vertical and longitudinal section of such machine. Figure 5 is an under side view of the Vclamp-plate, and

j Figure G a perspective view of the heel-receiving'former, to be hereinafter described.

This invention is to provide a ready and expeditious means of not only shaping a heel for application to a.

I boot or shoe, but at the same time to prick or indent the tread of theheel as 'a guide for punching the nailholes in applying the heel to such boot. l I l The invention consists in a revolving plate for supporting the heel to be trimmed, and serving at the same time as a former or patternto regulate the cut of the rotary cutter, the said plate being supported in a suitable frame, and having a mechanism applied to it for clamping the heel to its upper surface, essentially as hereinafter described. The invention further consists in forming the clamp-plate, which secures the heel to the formcr, with a series of pointers or pins, which impress upon the outer surface of the heel a. range of dots or indentations for marking the position of the nail-holes which are to be punched in such heel.

In the accompanying drawings, A denotes the frame of the machine, it beingof the proper shape to support the working parts thereof, and being provided with a shelf or operatingtable, a, at its upper part. The rotary cutter is shown at B, as supported in journals b Za, upheld in bearings made in the upper extremities of the urms c e of. a vibrating carriage or head-stock, C, the shaft or base d of such carriage revolving vin suitable bearings e c,- applied to crossbraccs ff, making part of the frame of the machine, the carriage G being pressed forward to the hce`l-former by a spring suitably applied to the frame A. The mandrel of the cutter B has a pulley, g, fixed to it, around which an endless belt, 7L, travels, and puts it in rotation, the said belt also extending around a pulley, z', fixed to a horizontal shaft, j, supported by cross-braces .7c 7c of the machine frame; this shaftj having a second pulley, l, fixed to its opposite end, around which and a pulley, m, fixed to a driving- 'lhe supporting and shaping-bed or former is shown at p as supported upon the upper end of a vertical shaft, q, revolving in suitable bearings made in the frame A, and in a step, r, formed therein; the revolutions of the shaft g and former p being effected by a worm-gear, s, ixed to the lower part of such shaft, and which meshes into a worm, t, secured to.

n. horizontal clutch-shaft, u, supported in suitable boxes 'a 11, upheld by the frame A, and revolved by means of an Yendless belt, w, which passes around a pulley, z, supported by such, shaft and a pulleyf, y, fixed to the driving-shaft n, before mentioned. The pulley :l: revolves freely uponthe shaft u, and has a semi-clutch, z, formed upon its inner end, which operates in connection with a semi-clutch, al, formed upon the said shaft, as represented in the drawings. The movements of the pulley :v and semi-clutch e are controlled by a shippinglever, b, the fork of which spans the arbor of such pulley, and whose upper end extends through a slot, c', made in the table of the machine, and is provided with a handle, ol", for readily operating it. The fulcrum of this lever p is a staple, e', suitably applied to any contiguous part of the frame A. A sliding cross-head, f', surmounts the former']1, and is supported by two vertical rods y g', whose lower ends are secured to and sustained by a cross-bar or carriage, h', which inl turn is supported upon the upper c nd of a rod, 2", the lower end'.

of such rod being fixed to a tueadle, j,.attached to a rocker-shaft', le', upheld by the frame A. A clampplate, l', is disposed abovc the former j), and is upheld by a revolving stud, m', depending from the cross-headf, as shown in fig. 4 of thewdrawings. The under side of this clamp-plate Z has a series of points or pins nl nl u",

etc arranged upon it, as shown in figs. 4 and 5. A spiral. spring, a2, encirclcs cach the upper part of each of therods g y', and between the table a and thc eross-hea-df, these springs serving to force such cross-head upward, and raise the clamp-.plate l from o the former p. The shape of this former or cam plate is given in iig. 6 of the drawings as approximating to that of an oval, the larger part, n2, of such former being thev required shape to be imparted to the heel. The pointed or elongated portion o of such former is for the purpose of pressing against the side ofthe carriage C, and forcingr the cutter B away from such former, and from the heel placed upon it after the curved portion of such heel has been trimmed into shape by the` cutter.

A stop, p', is formed upon the upper surface of the formerp, as shown in the saidig. 6, and servos as n gauge p or abutment for the inner or fiat edge of the heel to rest against, as well as to guide and retain the clampplate in its due relation to such former, and cause it to revolve with it.v The axis ofthe shaft of the cutter B should be such a distance above the surface of the formerp as to give the necessary angle tov the sides of the heel. To accomplish this theshaft q may be providcd'with a'set-screw, a4, at its bottom, for raising and lowering it. I

In operating with the above-described machine, the heel, having previously been formed nearly into proper shape, is to be placed upon the upper surface cf the formerp, andwith the flat or front edge of such heel in contact with the stop p', the point of said former being in the position shown in 4 of the drawings, as pressing the cutter B away from contact with it.. The foot of the workman is next to be pressed upon the treadle j', and the clamp-plate Z forced down upon the heel, which will not only securely hold such heel in place upon the former, under the action of the cutter, but by means of its points nl al nl will indent the tread of the heel with the necessary line of dots for marking the positionV of the nail-holes. The handle of the shippingdevcr Zi is now to be pressed inward, which throws vthe two portions z. and a1 of the clutch into engagement with each other. The revolutions of the pulley y in the direction of the arrow thereon will cause corresponding revolutions of the Worm t. These revolutions of the worm t put the worm-gear sin rotation, and with it the former p. As the pointed portion o of the formerp recedes from the front face of thecarriage C, or a ledge or guard bz applied to its front part, the remainingportion of the former brings up against such guard b2, and brings the heel in contact with suchl cutter The former continues to rotate, and subject 'the heel to the action of the cutter until it has vcompleted one revolution, and its cam or peint o again bringsr up against the cutter-carriage and forces the cutter away from such heel. At this point the clutch is to be disengaged, which will stop the motion of the former and allow the heel to be removed after.roleasing the pressure upon the treadle.

I elaimv 1. The employment of the revolving cam-plate or formerp for the purpose both of supporting zthc heel and giving the required outline to it,under the action of the rotary cutter, substantially as hereinbefore described.

2. I claim, in combination with such cutter I3, and in a machine for trimming boot-heels, the fender or ledge b2, applied to the cutter-carriage C as set forth and explained.

3. `I claim the construction and mode of application of the clamp-plate l', in manner, and operated by tho treadle j', as before explained.

4. I claim the peculiar construction of the former p, as composed of the oval-shaped plate for giving the necessary movements to the cutter-carriage C, and of thestop or abutinentp, as and for the purpose set forth. I

5. I claim the general combination and arrangement ofthe machine as herein shown and described, cousisting of the revolving cutter B, the former pl, and the clamp Z', these several parts bcingeporatedby their respective mechanisms in manner as before referred to and explained. y

GEO. W. WRFIELD. Witnesses:

W. F. Tnownrnen,

W. H. CHAMBERLAIN.

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