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Safety Razor

Patent US830105

Invention Safety-Razor

Filed Tuesday, 26th April 1904

Published Tuesday, 4th September 1906

Inventor Ernst Scharff

Language English

CPC Classification:   

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A PDF version of the original patent can be found here.

United States Patent Office.

Ernst Scharff, of Frankfort-on-the-Main, Germany. Safety-Razor.
No. 830,105. Specification of Letters Patent. Patented Sept. 4, 1906.
Application filed April 26, 1904. Serial No. 204,940

To all whom it may concern:

Be it known that I, Ernst Scharff, manufacturer, residing at 18 Fahrgasse, Frankfort-on-the-Main, German Empire, have invented new and useful Improvements in Safety-Razors, of which the following is a specification.

My invention relates to safety-razors, and more especially to the means whereby the razor-blade is clamped in the casing.

In the accompanying drawings, Figure 1 is a perspective view of a safety-razor embodying my invention, and Fig. 2 is a side elevation thereof.

a is the casing made in the usual way.

r is the razor-blade, which is pressed against the casing by clamps.

f g are the two arms of a bell-crank lever pivoted at the point c to the casing. This bell-crank lever is provided at the end b with a presser-roll n, which forms a practically-unyielding stop to facilitate the placing of the blade into its working position. The end of the lever-arm g is screw-threaded and carries a pressing-screw d. This screw extends through a hole h in the casing and is provided with a head m to allow its turning by an appropriate key. By this arrangement of the screw-head m at the rear side of the casing it is easily accessible, and yet does not protrude at a place where it could interfere with the working of the razor.

The roller n forms a practically-unyielding stop, limiting the forward movement of the blade r when the same is inserted, and thus accurately determining the position of the blade relatively to the casing. By means of the adjusting-screw d the position of the presser-roll or stop-roll n may be varied so as to allow the blade r to be pushed farther forward when its edge has been reduced by grinding.

I am aware that set-screws have been applied to one-armed levers in safety-razors and that bell-crank levers have been used before my invention, especially in connection with springs; but

What I claim as my invention, and desire to protect by Letters Patent, is the following:

1. In a safety-razor, the combination of the casing forming a support for one side of the blade, a practically-unyielding stop arranged to engage the other side of the blade, a bell-crank lever pivoted on the casing at the rear thereof and having one arm carrying said stop, and an adjusting device rigidly connecting the other arm of the bell-crank lever with the casing to move said stop toward or from the adjacent portion of the casing.

2. In a safety-razor the combination of a pressing-lever with a pivotal connection at the rear side of the casing and a pressing-screw protruding through the rear wall of the casing and having a head which bears against said wall.

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

Ernst Scharff.


Peter Hadler,

Hans Hahn.