US18392A - Manufacture of artificial howes - Google Patents

Description

UNITED STATES PATENT OFFICE.

TIMOTHY DEMING, OF EAST HARTFORD, CONNECTICUT.

MANUFACTURE F ARTIFICIAL I-IONES.

Specification of Letters Patent No. 18,392, dated October 13, 18,57.

To all whom t may concern.' i

Be it known that I, TIMOTHY DEMING, of East Hartford, in the county of I-Iartford and State of Connecticut, have invented a new and useful Improvement in the Con struction of Artificial Hones; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this speciiication, in which- Figure l, is a perspective View of my improvement. Fig. 2, is a longitudinal section of the same.

This invention relates to an improvement in the construction of that class of artificial hones which are formed of glue and emery.

The object of the invention is to produce a more compact and solid hone one more etticient in its operation and more durable than the kind hitherto constructed and one resembling in every essential respect a natural stone o-r hone.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

In Figs. l and 2 A represents a fiatwooden stock on which the mixture or compound viz. glue and emery is placed. I cover one or both sides ot the stock as may be desired with a series of thin layers (a) (a) (a) of the above composition, and compress each layer after it is applied to the stock the pressure being suliiciently powerful to render the mixture solid and very compact. Any number of layers may be applied to the stock according to the thickness required.

By having the mixture placed on the stock in thin layers, each layer being compressed separately avery solid hone is produced and a good tooth as it is technically termed is obtained. These hones are usually constructed by having the mixture applied at once and merely allowed to cool and harden without pressure and therefore are not suiiiciently firm, the emery is readily detached by the friction of the article while being sharpened. By subjecting the mixture to pressure and in layers separately, this dilliculty is obviated. If the whole amount necessary to form a hone of the requisite thickness were applied to the stock at once and then compressed, the hone would not be so compact and it would be quite liable to be of unequal density.

I would remark that the proportion of emery and glue may be varied as circumstances may require, the proportion ot' course being varied according to the size or neness of the emery and the quality of hone desired. j

I would also remark that the layers when applied being of course warm and in a semifluid state, are allowed to cool to a certain degree so as to be of a rather stiff plastic or doughy consistence when subjected to pressure.

This composition emery and glue, when applied in vlayers and subjected to pressure as herein described forms a very compact and durable hone and closely resembles in essential points, viz: cutting quality and durability the natural hone. Any number of layers may be applied according to the thickness required and any proper press or device may be employed for compressing the composition or mixture.

I do not claim a compound of glue and emery for constructing or forming artificial hones, for this is a well known composition and is commonly used for such purpose; but.

I claim as new and desire to secure by Letters Patent,

The particular mode of applying such composition as herein described, that is ,to say, forming or constructing the hone by placing the composition in thin layers on the stock or bed and subjecting each layer to a requisite degree of pressure.

TIMOTHY DEMING.

IVitnesses:

SYLvnsrER ROBERTS, E. S. GOODWIN.

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