US105452A - Improved shoemakers edge-plane - Google Patents

Description

ARTHUR r; HAZARD, or NORTH BBIDGEWATER,MAssAoHUsErrs. I

` Letters Pdteat No. 105,452, dated July 19, 1870.

rMPnovsD sHonMAKnRs EDGE-PLANE.

To all persons `to whom these presents may` come:

Ie it known that I, ARTHUR P.' HAZARD, of North Bridgewater, in thecountyof Plymouth and State of `ll/Iassachusetts,,have invented a newand useful Improvement in Shoemakers `Edge-Planes; and I do `hereby deo-lare the saine to be fully described in the following specification, and represented in the accom- `panyingdrawing, of whichl i Figure-L denotes' aiside elevation'.

l VFigure 2,1a longitudinal section.

Figure 3, a frontend elevation; and 4 f i Figure 4, a rear-endview of a shoemakersfledgeplane, as constructed iu` accordance with my inven- My invention vrelates to thatclass of deviees'termed edge-molding planes, as used by shoemakers in rey ducing andmolding the edges of boots and shoes, in which the molding-edge or part of the implement is formed intwo portions, one offwhieh is on the cutter,

` and the vothe'rbn the guard; and 4 My invention consists ina peculiar mode of applying thecutter to the stock, whereby the cutter, as it ma y become worn, may not only have its cutting-edge moved up and preserved in due relation to the guard,

`but its molding-surface `so adjusted as to maintain its normal or proper curvature wit-h respect to the molding-surface of the guard, in order that the moldingsurfaces of the cutter and the guard may rest'in contact with the edge `of 'a sole'while being molded.,

12 It 'fact well known, that, ,in edge-molding planes, asmade with a guard and detachable knife, no adequate means hasbeen provided. by which the .cutter and `inolding-surface',`` as the former became worn, could he accurately adjusted, lto preserve its due correspondence with the guard and its curved molding-surfaces; but, as the ,cutter became more or less worn, and was moved toward the guard', the nice correspondence of the part'sjwas destroyed, and the tool had to Vhe takeuto the factory, and the parts readjusted or reduced, to compensate for-the wear.'

The object of `my invention is toenable a workman to readily adjust the parts, and keep them in their duerelation until the cutter is wornout, without any reconstruction whatever of the-parts'.

In the saiddrawingl A denotes the stock of the implement, the same being made of ablockor piece of steel, and having a guard, B, disposed ouits frontend.

` This guard may be formed inl one piece with the block, or 4.may be made separate therefrom, and so astov be adjustable thereon, andoonneoted .thereto in any suitablemanner, as may be' desirable. A

` "O denotes the' throat of the tool, which extends transversely through the same, as shown in the drawing. j `D is thetang, which extends down `from the stock intothe'handle,E.

a grindstone. y In adjust-ing the knifein its proper position with i respect to therguard, I l'irst bring the scarfed edge of `The schedule'referredto lnfthese Letters Patent end making part of the same.

F is a curved knife or cutter, which is formed as shown in gs. I, 2, 3,- and 4, and attached to thefside of the stock A by means of two screws, al a', which pass through slots, b b', made through the cutter, and screw into the said stock. 4 l These slots are of a slightly curved elongated form,

and of a width somewhat greater than the diameterl of the shanks of the screws.` x v:By means f these slots and screws I can not only readily adjust the edge of theknife-with respect to the guard, but, in case of wear of the knife, oras occasion may require, the curved molding-surface of such knife can be easily and accurately adjusted to the desired degree of curvature, to operate to. the best advantage with the curved molding-surface of the guard', andso that each part shall have a'rm bearing upon the edge of the sole to be reduced or molded, 'whereby the tool is not only firmly supportedaud enabled to cut an even shavingr from the edge, but serves, at nthe 'same time, to more or less condense and polish it.

By my peculiar construction and application .of the said knife to the stock, the grinding or sharpening of the knife, whenit has become dulled, is an easy operation, as all I have to dois to slightly turn vthe screw a and remove the screw a', the knife turning on the screw Va as a fulcrum, canv be readily turned` back a` suiicient distance to allow the edge to be reduced upon the knife to bear on the inclined surface of the guard, and fasten the screw a; next, to adjustv the cuttingedge of the knife at -the proper distance from the guard, I. have simply to raise that part of the knife the vdesired distance, and next tighten the screw a, and the implement is ready for use. v

I would remarktbat I do not confine myself to the formation of the slots in the 4shank of the knife, and passing the screws through these into the stock, as I sometimes make the slots in the stock and pass the screwsthrough them into the shank of theknife, in which case the heads of the screws would be on the opposite side of the stock.

` I do not claim in asole-edge plane making the knife, detachable and adjustable upon its curved shank, as

am awa-re that such is not new.

What I claim as my invention is 'lhe combination and arrangement of the screws a a', and the slots b b', with the cutter F, and the stock A, in manner-and for the purpose or purposes as set forth.

g ARTHUR RHAZARD. Witnesses: Y

F. I?. HALE, Isaac A. DUNHAn.

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