US1384044A - Safety-razor - Google Patents

Description

C. R. BURKE.

SAFETY RAZOR.

APPLICATION FILED IuIIE I9, 1920.

Patented July 112, WZL

...IiIhI IliIIlllI-nl ,lll Ilm CHARLES FR'. BURKE, @F CHICAGO, ELMNOIS.

SAFETY-Mimi.

nee-enea,

Speciicaton of Letters Patent.

Application lfilled June 19, 1920. Serial No. 390,080.

To all whom t my concern.'

Be it known that ll, CHARLES R. BURKE, a citizen of the United States, residin at Chicago, in the county of Cook and tate of Illlnois, have invented certain new and useful improvements in Safet -Ravzors, of which the following is a speci cation.

This invention relates to a razor which, in addition to the guard that prevents the blade contacting with the face at a dangerous angle, has its holder for the blade mounted to reciprocate in a frame, and so connected with a roller that traverses the surface to be shaved that the blade receives a movement in the direction of its edge while it is being drawn over the surface.

rlhe object of the present invention is to improve the construction of a razor of this general type.

According to one feature of the invention, the razor carries upon its frame, in addition to the usual guard for the edge of the blade, aA face plate that overlies the blade in a manner to prevent contact of the blade with the face except at its shaving edge, thereby leaving the blade free to reciprocate, and to act with the edge guard in determining the proper shaving angle. rlhe face plate preferably extends straight across from side to side of the frame, but is convexed in the di rection of the shaving stroke.

According to another feature of the invenn tion, the blade holder is mounted upon the frame through the medium of a pair of oppositely extending projections which are held in a pair of brackets or standards on 'the frame with freedom to slide longitudinally of the projections, so that a blade confined in the holder may be reciprocated but with close confinement against any turning movement so that the holder will retain the blade at the precise angle desired notwithstanding its freedom of reciprocation.

According to another feature of the invention, the means for imparting reciprocating movement to the blade holder comprises a pair of rollers spaced apart on the frame, with a shaft of relatively small diameter extending between them, a rotary cam, acting in the direction of the axis of the shaft, mounted on the shaft between the rolls, and a connection between the cam and the blade holder through which the cam transmits its movement to the latter; such connection being preferably in the form of a fin er projecting rigidly from the blade hol er and The invention will be fully understood upon reference to the accompanying drawing, in which- Figures 1, 2, and 3 are, respectively, a front elevation, an end view, and a rear elevation of a razor embodying the several features of the invention; and

F ig. 4 is a section on the line 4*--4X of Figs. l and 3.

1 represents the frame, preferably composed of a base plate 2 and cheek plates 3 with intermediate extensions 4 that carry the face plate 5, and with forward extensions 6 that carry the roller shaft 7. 8 represents a blade holder adapted to receive the blade 9 and hold it therein through means of the spring 10 and mounted, through end projections 11 Working in slots 12 of the brackets 13, in such manner that it can receive a limited reciprocation transversely to the direction of shaving while being sustained by the brackets in the exact angular position in which the blade should be presented for safe shaving. A linger 14 projects from the blade holder 9 downwardly through an opening 15 in the base plate 2, and thence forwardly and upwardly into engagement with a cam 16 on the shaft 7- Rollers 17 on the ends of the shaft 7 impart rotation to the latter and revolve the cam to develop reciprocation in the blade holder. A guard 18, in addition to assuming the usual controlling relation to the edge of the blade, is in the present instance located over the shaft 7 between the rollers 17, and is preferably formed of an extension of the base plate 2 of the frame 1.

Face plate 2 coacts with the edge guard 18 and rollers 17 to position the razor upon the face and define the proper shaving angle. t also revents frictional contact of the blade and lade holder with the face,

Patented July 112, 1192110.

and thus leaves them free from interference in their reciprocating movement. r)The rounding of the contact surface of the face plates not only insures smooth travel of the plate over the face, but insures control of the shaving angle jointly by the face plate and edge guard, and prevents the face plate from supporting the razor with the driving rollers out of contact with the face.

A razor constructed as above described, when drawn across the face through means of the handle 19, will not only present the cutting edge of the blade 9 in cutting relation to the beard, but will develop in said edge a rapid reciprocation which greatly increases the cutting effect and consequent smoothness of ,the shaving operation.

I claim:

1. In a safety razor, a frame, a blade holder mounted to reciprocate in said frame, a cam shaft havin connection with the blade holder throug which it reciprocates the latter, and a guard overlying the cam Shaft.

2. In a safety razor, a frame, a blade holder mounted to reciprocate in said frame, a cam shaft havin connection with the blade holder throng which it reciprocates the latter, and a guard overlying the cam shaft; said cam shaft having driving rollers at the ends of said guard.

3. In a safety razor, a frame, a blade holder reciprocating in said frame, a pair of drive rolls on said frame having a shaft extending between them, a cam on said shaft, a connection between the cam and the blade holder for reciprocating the latter, and a guard lying between the rollers and overhanging said shaft.

4. In a safety razor, a frame, a blade holder having means for mounting a blade therein, means for reciprocating the blade holder in the frame, face contacting driving' rolls for actuating the blade reciprocating means, an edge guard carried by said frame in the same line of facial contact with the driving rolls, and a face plate mounted upon nena-a the frame in position to. overlie a blade mounted in the frame and prevent contact of the blade with the face; said face plate and edge guard coacting to define the angle at which the razor traverses the face.

5. In a safety razor, a base plate, a shaft mounted at the front side of said base plate, guardrollers on said shaftjmparting rotat1on thereto, a reciprocating blade holderv on one side of said base late adapted to present a blade with its e ge adjacent said rollers on one side of the shaft, a cam on said shaft, and an actuating finger reciprocating with the blade-holder, extending therefrom through the base plate, and deflected beyond the base plate into coacting relation to the cam on the opposite side of the shaft from the blade holder.

6. In a safety razor, a base plate having cheek plates projecting on one side of the plane thereof, a roller and cam shaft mounted in said cheek plates at the front side of the plate, said plate having an extension at said front side from the plane of the base plate 1n the same direction as the cheekplates but inside of said shaft, said extension being deflected forwardly to provide a guard over said shaft, and a reciprocating'blade holder supported from said base plate and adapted to present a blade with its edge in position to be controlled b said guard.

7. In a safety razor, a ase plate, cheekplates projecting from the plane of said base plate, brackets also projecting from said base plate between the cheek plates but spaced inwardly therefrom, a roller shaft mounted in said cheek-plates carrying face rollers and a cam, a reciprocating blade holder mounted in said brackets adapted to present a blade with its edge adjacent said rollers, and an operating finger projecting from the blade holder between the brackets and into coperative relation to the cam.

Signed at Chicago, Illinois, this 9th day of June, 1920.

CHARLES R. BURKE.

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