Filed Wednesday, 17th July 1907
Published Tuesday, 6th April 1909
Inventor Harrison H. Boyce
Owner Gillette Safety Razor Company
Language EnglishCPC Classification:
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To all whom it may concern:
Be it known that I, Harrison H. Boyce, a citizen of the United States, residing in the city of New York, borough of Manhattan, county and State of New York, have invented certain new and useful Improvements in Safety-Razors, of which the following is a full, clear, and exact specification.
This invention relates generally to safety razors and particularly to razors of the flat, thin blade type. As usually constructed razors of this type comprise four principal parts: viz., a cap, a guard, a handle, and a rotary member independent of the handle for securing the guard and cap together so as to clamp the thin, flat blade between them.
The principal object of the present invention is to decrease the number of the principal parts to three and to cause the three parts to accomplish the same results as the four parts above enumerated.
With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in a razor construction wherein the handle, instead of serving the sole function of a handle in the usual manner, is caused to serve the two-fold function of a handle and a rotary locking member for drawing the guard and cap together, whereby the necessity of employing an additional or independent rotary locking member is avoided, and the razor construction is thus simplified and rendered less expensive in construction.
The invention also resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of invention herein disclosed can be made within the scope of the claims without departing from the spirit of the invention.
In the accompanying drawing forming part of this specification,
Like reference numerals indicate corresponding parts in the different figures of the drawing.
The reference numeral
The reference numeral
The most important improvements of the present invention relate to the means for locking the guard and cap together. In this connection it is proposed to swivel the handle of the razor on to the guard
In the modified construction illustrated in
The improved razor of this invention is strong, simple, durable, and inexpensive in construction, as well as thoroughly efficient in operation. By swiveling the handle on to the guard, said handle, as before explained, is caused to serve the two-fold function of a handle and a rotary locking member, and in this way the independent rotary locking member which is usually employed can be dispensed with, and the principal parts of the razor are reduced from four to three.
What is claimed is:
1. A safety razor comprising: a cap, a threaded shank thereon, a guard having an annular, shouldered recess, a flanged washer mounted in said recess and provided with an external shoulder adapted to pass under the guard, and an internal flange, a handle having a pair of shoulders engaging said internal flange, and internally threaded.
2. A safety razor comprising a cap, a threaded shank thereon, a guard, external lugs on said cap adapted to engage corresponding recesses in said guard, a handle having an annular recess, a flange on said guard entering said recess, and a threaded opening in said handle.
3. A safety razor comprising a cap, a threaded shank thereon, a guard having an annular, shouldered recess, an internally threaded handle having a ring swiveled to it at its upper end, and a flange on said ring engaging said shoulder.
4. A safety razor comprising a cap, a threaded shank thereon, a guard, a handle having a threaded opening, a swivel connection between said guard and handle comprising a flange on one and a pair of shoulders on the other, and means for preventing relative, lateral movement of the cap an guard comprising a projection on one adapted to enter a recess in the other.
In testimony whereof, I have hereunto set my hand in the presence of two subscribing witnesses.
Harrison H. Boyce.
Herman. J. Schwartz,
Charles A. Scheuber.