US950808A - Razor-hone. - Google Patents

Description

S., J. SMITH Razon Hom.

APPLICATION FILED APB..28,1909.

Patented Mar, 1, 1910. T3

W5 ab w m J W. \m. di 5 WITNESSES:

iTEn sTATEs PATENT oEEroE.

SQUIRE 1T. SMITH, OF VANCOUVER/BRITISH COLUMBIA, CANADA, ASSIGNOR OF ON- HALF TO GILBERT P. MONTAGU, 0F VANCOUVER, CANADA.

RAZQR-HONE.

p Specification of Letters Patent.

Patented Mar. 1, 1ero.

Application filed April 28, 1909. Serial No. 492,762.

Be it known that I, SQUIRE J. SMITHv citizen of the United States of America, re-

siding at Vancouver, in the Province of British Columbia, Canada, have invented a new and useful 'Improvement 1n Razor- Hones, of which the following 1s a specification.

This invention relates t0 a hone or set-.

stone on which the edges of razors or other knlfe blades requiring a fine cutting edge are set, and my object has been to provide a surface on that hone that will facilitate the work of )utting a fine cutting edge on a knife bla e by providing recessed interruptions in the plane of the abrading surface the edges of which will remove the Wiring which forms on the edge of the'knife during the operation of honing.

In the operation of honing a knife blade on a set-stone having a plane uninterrupted surface the wire7 edge as -it forms curls upward from the surface Aof the stone until it is by repeated honing separated fromits attachment to the blade, but by providing recessed interruptions in the plane of the surface this tendency to curl upward is lessened as it approaches the point of severance and the wiring is removed by contact with the edges of the recesses. Further where the abrading surface is not interrupted the particles of the removed wire edge'lie 'on the surface of the hone and injure the edge of the knife, but by providing recessed interruptions the particles of the wired edge as they are removed fall intoY the recesses 'and leave clear the plane abrading surface of the hone.

The invention is'particularly described in the ,followino specification, reference being made to the drawings by which it is aecompanied, in which: s

Figure l is a -plan of a hone having my improved surface, Fig. 2, a cross section of the same, and Flg. 3, a plan showing a modllication 1n the form of the recesses.

.In these drawings 2 represents the body 0f Y,

the hone, 3 being the surface to which my improvement is applied.

This improvement consists in providing a series of recessed interruptions in the plane of the honing surface, which interruptions may be of any form, but preferably consist as shown in Fig. l of a series of uniformly distributed circular holes 4. By 'providing the recesses to penetrate only a short distance in, as shown in Fig. 2, the other surface 5 is retained intact and may be used for a preliminary or ra id honing where the edge of the. knife is su ciently dull to require such.

The recessed apertures may be of any desired form such as elongated Grooves 6 in the surface, and as shown in i1ig. 3, these grooves 6 may be curved to avoid the edge of the blade catching on the edges of the grooves. I

Having now particularly described my invention and the object to be attained thereby, I hereby declare that what I claim as new and desire to be protected in by Letters Pat@ ent, is:

' A blade sharpening hone or set-stone comprising a rigid stone having a. smooth unilr terrupted surface on one side and having its other side provided with depressions spaced apart to interrupt the surface of said side,

substantially as shown and for the purposes described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SQUIRE J. SMITH.

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