US107491A - Improvement in shoemakers edge-planes - Google Patents

Description

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ARTHUR P. HAZARD, 0F NORTH 'BRIDGEWATER MASSACHUSETTS.

Letters Patent N 107 ,491, dated-Saltwater 20, 1870.

IMPROVEMENT IN SHOEMAKERS EDGE-PLANES.

The Schedule referred to in th'ese Letters Patent and making part of the same To all persons to whom these presents may come:

Be it known that L ARTHUR l. HAZARD, of North Bridgewater, in the county ot' Plymouth and State of Massachusetts, have invented anew and useful Improvement in Shoemakers Edge-Planes; and I do hereby declare the same to be fully described in the following specification and represented in the accompanying-drawing, of which- Figure 1 denotes a side elevation;

Figure 2, a longitudinal section, l

Figure 3, a front end elevation and Figure 4, a rear end elevation of a shoemakers edge-plane, as constructed in accordance with my iuvention.

My present invention, like that patented by me on A the 19th day ot' July, A. D. 1870, relates to that class of devices termed edge-moldin g planes,7 as employed by shoemalrers in forming and molding the edges of boots and shoes, in which the lnolding-edge or part ot` the implement is formed in two portions, one of which is on the cutter, and the other on the guard; and

My present invention consists in a peculiar mode of applying the adjustable guard to the implement, whereby the guard, as the cutter becomes worn, may be so moved toward the cutter as not only to preserve the cutting-edge of the latter, iu due relation to the guard, to enable it to take o the desiredthickuess of shaving, but to so bring into correspondence the molding-surface ofthe guard as to cause it to maintain its normal or proper curvature, with respect to the molding-surface of the cutter, in order that both the molding-surface of the cutter and that of the" guard may rest* in contactwith the -edge of Va sole while being reduced.

Edge-molding planes, as heretofore constructed with a cutter and a movable gua-rd, have possessed no certain, reliable, and accurate means by which the guard,l

as the cutter' becomes worn, could be so accurately adj usted as to preserve its due relations with respect to the cutter and its moldinglsurface, but, as the edge of the cutter became more or less worn, and the guard was moved toward it to compensate l'or the wear, the requisite and nice correspondence of the moldingsurface of the guard and that of the cutter was destroyed, as neithera vertical Ynor a horizontal movement of the-guard alone can bring it into its true relative position with theedge of the cutter and its molding-surface. To accomplish this result it became necessary to take the implement to the factory for readjustment or tiling away of the parts, to enable them to be brought into their normal or relative correspond ence. l

To provide a simple and effective means by which a Shoemaker or workman, as -the cutter becomes worn, 'can readily so adjust the guard with respect to the cutting-edge and molding-surface of the cutter as to preserve all the parts in their due correspondence 'nntil the cutter becomes worn out or unfit for use, is'the object of my invention.

In the said drawing- A denotes thc stock ot' the said implement, the same being made of a block or piece of steel, and having an acute angular cutter, B, formed on its lower part, as shown in figs. 1 and 2.

' C denotes the throat or chip-passage the same extending transversely through the tool, as shownin the drawing.

D is the tang, which extends up from the stock into the handle E.

F is the adjustable guard, which has the form, as shown in gs. 1, 2, and 3, and is attached to the side or scarfed face of the stock A -by means of two screws, l) b', arranged in different horizontal planes, and which pass through slots, e c', made in the stock, and screw into t-hc guard; or the slots may be made in the shank of the guard, and the screws passed through themintn the stock.

These slots I make of a slightly curved, elongated form, and of a width somewhat greater than the diamcter of the Shanks of the screws.

l By meansof these screws and slots a compound increment can be given to the guard, whereby .the guard may not only be readily adjusted to the edge of the cutter, but the curvedA molding-surface of' the guard can be easily and accurately. adjustedto the desired degree of curvature, to operate to the best advantage with the curved molding-surface of the cutter, and so that each part shall have a firm bea-ring upon the edge of the sole to be reduced or mold; ed, whereby the tool is not only rmly supported, and enabled to cut an even shaving from the edge ot' the sole, but, at thc same time, to more or less condense and polish it.

In adjusting the guard in its proper position with respect to the cutter, I first bring the scarfed edge c of the guard to bear on the scnrted edge of the cut.- ter, andwith the molding-surlce oftheguard a little above the molding-surface oi' the cutter, and fasten the screw b. I

`Nefit, to adjust the guard at the proper distance. from the edge of the cutter, we have simply'to move the contiguous part of the guard away from the edge o t' the cutter a distancelcquai tov the thickness of the shaving we desire to remove, and tighten the screw b', and the tool is ready for use. j

I do not claim, in a sole-edge plane provided with acutter and a movable guard, making the guard thereof adjustable in a singlev plane, whether vertical o1' horizontal, as I am aware that such is not new.

Nor do I claim attaching the guard to the shank or stock in manuel' as shown in Letters Patent Nos. 20,882 or 27,840, as such will not effect the result attained by my invention.

What I claim as my invention is- My improved'sole-edge plane, having its movable guard applied to the stock A byl means of the screws b b', and the slots c c', as described, the same enabling the said guard to be adjusted with respect to the edge-of the eutteraud its molding-surface, yin manner and for the purpose set forth.

ARTHUR P. HAZARD.

Witnesses i F. I. HALE, ISAAC Lowe.

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