US1950073A - Safety razor - Google Patents

Description

March 6, 1934- s. TRACHTENBERG SAFETY RAZOR Filed May 26, 1932 1 N V E N TOR.

5a/72uc/ 7706/2 fe/wery 7 ATTORNEY.

Patented Mar. 6, 1934 UNITED STATES PATENT OFFICE 3 Claims.

My invention relates to improvements in safety razors and more particularly that type of razor having a blade that is provided with four edges.

With the above objects in view, my invention consists of a razor preferably of rectangular design, and having two integral parts which when assembled are inseparable, thus permitting easy and more thorough cleaning of the guard and blade, avoiding misplacement of parts by the user and being more easily adjusted for use than the present style of razors.

A further object of my invention is to provide a safety razor in which a particularly novel mechanism is employed for holding and adjusting the blade in a manner satisfactory to the user.

A further object of my invention is to provide a safety razor of the character described in which the blade and guard are so deflected as to permit of easy removal of hair bristles, and which will be safer to use than the razors now on the market.

A further object of my invention relates to a general improvement in safety razors of this type obtained by providing simple and efficient method of construction thereof with a minimum num- 'ber of parts which, however, will afford a maximum number of shaves, and with a minimum amount of trouble, a razor which will be reliable, easy to manipulate, dependable, strong and well adapted for shaving purposes.

Further objects and advantages will appear in the following specifications, and novel details of the invention will be particularly pointed out in the appended claims.

The invention may be fully understood from the following description when read in connection with the accompanying drawing in which Fig. 1 is a top plan of the outside of the guard with a safety razor blade particularly adapted to flt said guard attached thereto.

Fig. 2 is a vertical cross section of said razor with blade in place, and adjusted ready for use.

Fig. 3 is a plan of the top of the guard on said razor showing the deflection of said guard and the safety guard in each corner.

Fig. 4 is a vertical cross section of the razor without guard or base plate in position ready for the blade to be applied.

Fig. 5 is a plan of a blade adapted for said razor.

Similar numerals of reference indicate the corresponding parts in the the several views.

1 in Fig. 1 designates the outside portion of the combined razor guard and base for the blade in rectangular design provided with suitable guard teeth or fingers on each of its edges and angular guards upon its corners.

2 of Fig. 1 designates the guard teeth which deflect downward at an angle of approximately 25 turning the edges to a proper angle for shav- 1118.

3 in Fig. 1 designates the extreme uppermost portion of the handle of said safety razor which is provided with a left hand screw thread and with a round head riveted in position on the extreme upper end thereof and which when the handle is revolved rises above the guard and permits the blade to be passed over the head and attached to or released from the guard plate. When the handle is turned to the right, owing to the left hand thread on its extremity, the guard and blade will be clamped tightly together.

4 in Fig. 2 designates the lower portion of the handle of said razor octagonal thus preventing slipping.

5 in Fig. 2 designates the angle of approximately 25 of the guard and blade.

6 in Fig. 2 designates the spiral threaded bolt protruding through the center portion of said guard having a round headed nut riveted on the upper portion of same. This bolt like member when the razor has been satisfactorily tightened or adjusted will firmly hold the blade in place.

6 in Fig. 4 designates the bolt-like projection above the guard of the razor in a position to receive the blade.

7 in Fig. 4 designates the round head riveted on threaded bolt used for tightening or adjusting a blade to said razor.

8 in Fig. 4 designates the safety guard of rectangular design located on each of the corners of said guard which prevents the corners of the blade from coming into contact with the, skin while using said razor.

5 in Fig. 4 designates the deflecting angle of the edges of said razor blade, said angle being approximately 25, said blade being concave and convex, and having in the center an interlocking and intersecting double key way.

9 in Fig. 5 represents the narrow portion of said keyway which is narrower than the round head on top of the threaded projection of said razor shown as No. 6, Fig. 4, and which when passed underneath said threaded projection No. 6 in Fig. 4, permits of ready adjustment of said blade upon the guard, and of clamping the blade upon the guard.

With the invention thus described, it is seen that what I have devised isan improvement in a more simplified razor utilizing more than one or two cutting edges now so commonly in use, and consisting of two integral parts of handle and supporting guard plate so placed that neither of them is removable from the other, and which is so made that it is more satisfactory to the user, is simpler, and because of the deflecting edge, is safer to use in removing hair from the skin. The sheet metal blade may be constructed with forming dies and may be generally concave convex in shape or may consist of a hollow frustum of a pyramid as illustrated in the drawing. This shape being preferred since it adapts itself readily to the formation of the straight cutting edges.

While I have shown a four edged razor, it is easily understood a three, five or six or any other reasonable number of. cutting edges may be employed'without departing from the spiritof my invention.

While I have set forth and illustrated a par? ticular construction suitable to carrying out my invention, I do not wish to be limited to;these details except in so far as the annexed claims shall limit me as alterations may be'made without-de= parting from the spirit of my. invention.

Having thus described my invention, what I wish to claim is:

1., A safety razor comprising a handle provided witha screw threadedouter extremity, a crowned angular. guard plate engaged with said screw threadedportion, said guardplate being provided with toothededgesand with angular guard ridges uponits corners and a crowned angular sheet metal blade superimposed thereon, the angles of said'blade beinggenclosed by said corner guards; aiterminali'head'upon said screw threadedportion of said handle; saidblade being provided witha key-hole slot'topermit its passage over saidlterminal headand 'iof its attachment to. anddetachment 'f-romtsaid' guard plate.

2. In a safety razor, a crowned angular guard plate having toothed edges inclined at an angle of approximately to the base plane of said plate, and provided with raised angular guards upon its corners, and a complementary concave convex sheet metal blade superimposed thereon and having its corners enclosed in said angular guards, a handle having a screw threaded portion passing through said guard plate, and adjustable thereon, and a terminal head upon said screw threaded portion, said blade being clamped betweensaid-head and guard plate.

3; In-a safety razor, a crowned angular guard plate having toothed edges inclined at an angle ofi approximately 25 to the base plane of said plate, and provided with raised angular guards uporrits corners; and a-complementaryconcave convex sheet metal blade superimposed thereonand having" its corners enclosed in said angular guards, a handle having a screwthreaded por- 35 tion passing through said guard plate, and-ad justable'thereon, and aterminal headupon said; screw threaded'portion; said-b1ade being'clamped between said' head and guard plate; andan opening irrsaid' blade permitting it to be passed-over 1 said head andsecuredbetween said' head and guard plate.

SAMUEL TRACHTENBE-RG:

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