US951306A - Razor. - Google Patents

Description

T. G. DURHAM.

RAZOR. APPLIGATION FILED MAR. a, 1909.

951,806, I Patented Mar.8,1910.

' \NVENTOR 10 formed therein boss 11 extended from a clamp 12 arranged 1 vide a simple UNITED STATES PATENT OFFICE.

THOMAS CLAUDE DURHAM, or NEW iron I RAZOR COMPANY, .A 00320 To all whom it may concern:

Be it known that I, THoMAs CLAUDE DUR- HAM, a citizen of the United States, residing at New York, in the county and State of New York, have invented anew and useful Razor, of which the following is a specificatlon. I

This invention relates in razors and one of the objects thereof is to provide a safety guard that will "not inter-- fere'with the strop'ping of the blade and which forms a simple eflicient device that can be used in the same'manner as a razor of the ordinary type. V

Another object of the invention is to proetficient device in which is used a thin detachable blade that can be stropped without removing the safety guard. I lVith these and other objects, not specifically mentioned, in view, the invention consists in certain constructions and combina-- tlons which will be hereinafter fully depointed out in scribed and then specifically the claims hereunto appended.

In the accompanying sdrawings which form a part of this s cification and in which-like characters 0 reference indicate g the same parts, Figure I illustrates-a form of razor in which a thin detachable blade is used, and which is constructed in accordance with the invention. Fig. 2 is an edge view of a portion of the device illustrated inFig. 1. Fig. 3 is an enlargedcross sectional view on the-line.4.4 in Fig. .1. .Fig. 4 is an enlarged end view of the device illustrated in Fig. 1, and Fig. 5 illustrates a blade used in connection with the device illustrated in Figs. 1 to 4, inclusive.

In carrying the invention into effect, there is provided a blade and a cooperatin safety guard, both of which may vary within wide limits.

In the device illustrated in Figs. 2 to 5-, inclusive, which is a preferred construction, there is provided a handle 7 to which is pivoted a shank 8 carrying a support -9 extended therefroim This support 9 has a slide-Way which is engaged by a to cooperate with the support 9 to hold a de tachable, perforated blade 13 in position, the blade being disposed between the sup ort and clamp. The structure so far described;

constitutes what may be termed a mount for the guard wholly included within a prism to an improvement x, N; 'Y., .Assmnoa T0 DURHAM DUPLEX: Barron or NEW YORK.

j the apex of which theistructure shown RAZOR.

Serial No. 482,143.

is the cutting edge ofthe blade and the base of which includes the upper edge of the mount. It is obvious that means for holding the support and clamp together other than ;t he

em loyed. A safety guard 14 is. employed an is mounted on the clamp 12- before re ferredto, so that it may swingacross the operative edge of the blade. In the best constructions, the clamp 12 has formed'thereon a pair of lugs 15 depending below the edge of the support, and the safety guard is pivoted at 'l6l7 to these ln s. The clamp 12 has its upper edge turne over to form. a back of substantial thickness the upper sur-' face 12' of which isalso the upper side of' the mount for the guard. For the purpose b s ,and-s ide:way fore referred to, may,'1n some 1nsta11ces,,be

Specification of Letters Patent] Patentd Mar 3, 1910 Application filed'MarchS, 1909.

of limiting the movement of the guard there i is provided one or more stops 18 on the guard which contact with the lower end of the l'ugs15 before referred to. It is well known that razor blades are shaped and ground so that the edges thereof are formed by two angular faces, the included angle of the'faces being very small, a very small angle having been found in many years of experience, the'best. In order to maintain the highest efficiency of. the blade,'when it be-, comes necessary to sharpen it, the initial angle or included an le of the faces of the edge must be reserved. If the blade issharp ened so t at a wider angle is formed on the edge, the edge will be blunterthan before, and consequently less efiicient. If sharpened to a narrower angle the edge will lose its rigidity andbecome too .flexible. In the present invention, the structure employed is sive, the bladeimay be strop'pedin the usual ',manner .without removing the guard, slnce the latter is'free to swing from one'side of the blade to the other across its edge. 1

1 Changesand variations may be made in the structure by which the invention is carried into effect. The invention, therefore, is not to be limited to the precise details of i and described. Whatiisclaimed is ed s-f 'm dby two "zor, t "e combination with 'a I guard beyond the edge of the blade,

4 across of a pivoted cooperating safety edge of the blade, and a mount for the guard wholly included within a prism the apex of which is the edge of the blade and the base'of which includes the upper surface of the mount, whereby the blademay be sharpened at its initial angle, substantially as, described.

2. In a razor, the combination with a blade having an edge formed by two angular faces, of a pivoted cooperating safety guard beyond and out'of contact with the and a mount for the guard wholly included within a prism the apex of lar faces,

' which is the edge of the blade' and the base of which includes the-upper surface of the mount, whereby the blade may be sharpened at its initial angle with the guard in position, substantially as described.

3. In a razor, the combination with a blade having an edge formed by two angular faces, of a pivoted cooperating safety guard beyond and adapted to swing across the edge of the blade, and a mount for the guard wholly included within a rism the apex of which is the edge of the ldlade and the base of which'includes the upper surface of the mount, whereby the blade may be sharpened at its initial angle with the guard in position, substantially as described.

4. In a razor, the combination with a blade having an edge formed by two-angular faces, of a pivoted cooperating safety guard beyond and adapted to swing freely the edge of the blade, and a mount for the guard including a pivot the mount being wholly included within a prism the apex of which is the base of which includes the up er surface of the mount, whereby the blade may be sharpened at its initial angle with the guard in position, substantially as described.

the edge of the blade and 5. In a razor, the combination with a blade having an .edge formed by two angular faces, of a pivoted cooperating safety guard beyond and adapted to swin freely across the edge of, the blade, a stop or limiting the movement of the guard, and a mount for the guardwholly included Within l a prism the apex of which is the edge of the l blade and the base of which includes the upper surface of the mount, whereby the blade may be sharpened at its initial angle with the guard in position, substantially as described. 5 6. In a razor, the'combination with a support, of a clamp, a detachable blade dis- "posed between the support and clamp, means for holding the support and clamp together, lugs formed on the clamp and depending below the su port, and .a safety guard pivoted to the ugs to swing across ,the edge of the, blade to similar opposite positions with respectv to the blade substantially as described. 1 1 7. In' a razor, the combination with a support, of a clamp, a detachable blade disposed between the means for holding the support and clamp l together, lugs formed on the clamp and depending below the support, a safety guard p'voted to the lugs to swing across the edge of the blade to similar opposite positions with respect to the blade, and a stop to limit the movement of the guard, substantially as described. In testimony whereof, I have signed my two subscribing witnesses.

THOMAS CLAUDE" DURHAM.

Witnesses: SYDNEY I. PRESCOTT,

L. L. BROWN.

support and clamp,

\ name to this specification in the presence of

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