No part
zoom_out loupe Click on this icon or hold down the shift key to magnify while moving over the patent image. zoom_in
home Home help_outline Help

Razor with Square Blade

Patent US1582707

Invention Safety Razor

Filed Monday, 2nd May 1921

Published Tuesday, 27th April 1926

Inventor David H. Trevor

Language English

CPC Classification:   

For a full resolution version of the images click here

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

Patented Apr. 27, 1926. 1,582,707
United States Patent Office.

David H. Trevor, of Newark, New Jersey. Safety Razor Application filed May 2, 1921.Serial No. 466,020. Renewed September 28, 1925.

To all whom it may concern:

Be it known that David H. Trevor, citizen of the United States, and resident of Newark, county of Essex, and State of New Jersey, has invented certain new and useful Improvements in Safety Razors, of which the following is a specification.

My invention relates to safety razors and the object of my invention is to provide a razor that embodies four cutting edges formed on a single plate and means for identifying the respective cutting edges or blades.

A further object is to provide means to hold the blades in proper relation to the holder.

Referring to the drawings which form a part of this specification.

Fig. 1 is a perspective view of a razor construction embodying my invention;

Fig. 2 is a sectional view taken on line X—X of Fig. 1;

Fig. 3 is a perspective view of the top plate razor plate and guard plate of the razor.

Figure 4 is an elevation of the blade.

A indicates a handle having a threaded socket A′ formed in one end thereof and provided with a flat annular surface A2. B indicates a screw which engages the thread in the socket A′ and is formed with a shank B′ of smaller diameter than that of the threaded portion thus providing a shoulder B2 against which the guard plate E is held by a screw D which extends through the central opening E′ therein. A similar opening E2 is formed in the razor plate F so that the screw B may hold all three plates together on the handle.

The top plate C and guard plate E are formed in the shape of a rectangular pyramid, the outer edges G—G—G—G respectively of which are disposed on a common plane. They are formed by a die and pressed from thin sheet metal and are rendered stiff and unyielding by the operation of pressing and, are consequently adapted to maintain their shape when finished.

The top plate is provided with pins H—H respectively which pass through holes I—I respectively formed in the razor plate F and guard plate G to hold them in proper relative position.

The razor plate F is flexible and is slotted as indicated at J—J—J—J respectively to permit the blades K—K—K—K to bend and conform to the surface of the guard-plate as will be readily understood and the razor plate is provided with two additional holes I′—I′ respectively so that all four cutting edges L—L—L—L respectively may be brought successively opposite any side of the guard plate and the respective numbers 123 or 4 thereon brought opposite the opening M in the top plate so that the user may know which blade is to be used for the next shave, etc.

It will be observed that all the plates may be easily separated for cleaning and a new razor plate inserted when desired.

Having thus described my invention, I claim as new and desire to secure by Letters Patent :—

1. A safety razor comprising a handle, a blade member having a plurality of cutting edges, identifying numbers on the blade adjacent each edge thereof, a guard plate and a cap plate having an opening through which one of said numbers may be seen and means for clamping said blade member between said plates.

2. A safety razor comprising a handle, a blade having a plurality of cutting edges, identifying numbers on the blade adjacent each edge thereof, the blade having a hole adjacent each number, a guard plate having two openings therein and a cap plate having two projecting pins adapted to extend through the openings in the guard plate and two of the holes in the blade, said cap plate having an opening adapted to register with one of the numbers whereby the number may be seen.

Signed at the city of New York, in the county of New York and State of New York, this 30th day of April, 1921.

David H. Trevor.