US1387465A - Safety-razor - Google Patents

Description

G. BROWNING.

SAFETY RAZOR.

APPLICATION FILED DEC.29, I9I9.

1 ,387,465. Patented Aug. 16, 1921.-

#BJ l MFI safety while obtaining such draw-cut.

UNITEDw lSTATES PATENT OFFICE.

GEORGE BROWN IN G, OF CHICAGO, ILLINOIS, ASSIGNOR TO LEE RAZOR MANUFAC- TURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F DELAWARE.-

SAFETY-RAZOR.

Specification of Letters Patent.

Patented Aug. 1o, 19211.

Continuation of application Serial No. 317,861, filed August 15, 1919. This application led December 29, 1919. Serial No. 347,900.

To all whom t may concern.'

Be it known that I, GEORGE BROWNING, a subject of the King of Great Britain, residing vat Chicago, inthe county of Cook-andv State of Illinois, have invented certain new and useful Improvements in Safety-Razors, of which the following is a specification, reference being had to the accompanying drawings, forming'a part thereof.

This application is a continuationof my application No. 317,861 filed, August 15, 1919, presenting the `saine inventionbshown in that application with certain detail modifications.l The purpose of the invention is to provide an improved safety razor having among other advantages that of insuring the drawcut of the blades in shaving, and particularly insuring the positioning of the blades at an angle of inclination to the surface to be shaved proper for efficiency and t consists in the elements and features of construction shown and described as indicated inthe claims.

In the drawings:

Figure 1 is a back plan view of a safety razor embodying this invention.

Fig. 2 is a front elevation of the same.

Fig. 3 is a front elevation with the bladeclamping plate removed. r Fig. 4is a section at the line 4--4 on iig. 2.

Fig. 5 is av plan view of the blades removed from the holder.

Fig. 6 is a section at the line, 6 6, on Fig. 4.

The distinguishing feature of this invention is that it comprises two fiat blade mem bers l, 1, each with a straight cutting edge at 1, said two blade members being mounted 'upon a unitary seat member 2, having two flat seats, 2a, 2a, at a Widely obtuse angle to each other, said seats having their edges at member 3, said clamp member having clamping faces, 3a, 3a, making the same obtuse angle to each other as is made by the two seats, 2a, 2a. But neither in the seat member nor in the clamp member do the two seats meet at a perfect angle, but preferably the angle is blunted or rounded at the rear or upper part, and the two blades have each a lug, l", for pivoting them together, said lugs necessarily lapping upon each other and being flexed at the angle of the seat and clamp when the clamp is tightened to hold the blades to the seat as hereinafter described. The seat member has a comb edge, 2", and a hollow boss, 2, projecting back from the side opposite the clamp in a direction bisecting the angle -of the two seats. Said seat member has also two dowels, 4 4, projecting from the two seats near their remote ends for engaging apertures, 1c, in the blade ,members respectively, said dowels fitting said apertures so as to position the blade members on the seats accurately with. respect to each other and with respect to the seat, that is, so that their cutting edges have the proper relation to the comb edge 2b of the seat. The positioning of the blades, particularly with respect to the angle between their cutting edges, is further effected by the pivot connectlon formed by an eyelet, l", which forms a boss projecting from one surface of the blades engaging a recess, 2", in' the seat member of the holder, said recess being a counterbore around the aperture through which the stem, 3a, of the clamp member, 3, extends, when extending also through the, eyelet, le, and thus, of course, through the apertures in both the blades at which they are pivotally connected by the eyelet and through the hollow boss, 2, of the seat member. 'The clamp member, 3, has apertures 3", forthe dowels, 4, 4, whereby the clamp member is positioned with respect;

to the seat member of the holder. The stem, 3, of the clamp member, 3, has pivoted to its inner end a threaded terminal, 3, and the inner end of the boss, 2c, is beveled at an acute angle to the plane of the blade seat produced inwardly-that is, beyond the cutting edge, -the pivot of the threaded terminal, 3, to the stem, 3, being substantially at the plane of said bevel. 5 is a handle which is axially apertured and threaded for screwing onto the threaded terminal, the end of the handle seating as a shoulder against the beveled end of the boss, 2", and thereby causing the clamp member' to be bound firmly against the blades to bind the blades agalnst ,their seats on the seat member by stress so nearly at rightl angles to the seat as to 'be aS effective as a direct right-angular pressure, while the handle which effects this clamping extends obliquely, as seen in Fig. 6, as is desirable for properly incliningthe blades as a whole with respect to the handle when in use.

the most essential function of the holes in the two blades at which they are pivotally connected by the eyelet, 1", is not thus pivotally connecting them together, but the most essential function is the engagement of the blades respectively for positioning their proximate ends while their remote ends are to each other adapts them to operate with a draw-cut, and insures that one or the other,

if not both the blades have a draw-cut;-

and that this angle is a widely obtuse angle in order that both the edges may be opera.-

Ative when they are inclined to the surface to be 'shaved at a proper angle for effective and safe operation. It has heretofore been proposed to make a razor with two blades' having their cutting edgesat right angles to each other; but upon consideration it will be evident that with the edges at a right angle, the blades could not be inclined properly to the surface to be shaved but could operate practically only lying fiat upon the surface; and that in order to have the two edges in touch with a plane surface to be shaved when the blades are inclined to that surface at the proper angle for shaving, the angle between the cutting edges must be widely obtuse as in the construction herein shown; and it is for this reason that this construction is adopted.l

I claim :-A

1. A safety razor comprising in combination with a holder, two blades each having two apertures, the holder having means for en aging said apertures positioned for positioning the blades with their cutting edges at an angle to each other.

2. .In the construction defined in claim 1, foregoing, the two blades being at a distance back from the intersection of their cutting edges lapped endwise one upon the other and pivotally connected together.

Upon consideration, it will ,be seen that 3. A safety razor comprising in combination for seating the blades, two blades pivoted together for adjustment to bring their cutting edges either in line with each other, for sharpening, or at an obtuse angle to each other for operation, and means on the holder for positioning them at said obtuse angle.

4. In the construction defined in claim 1 foregoing, the two blades being lapped one upon the other and pivotally connected together at their lap, the pivotal connection be# mg formed to afford a projecting boss, and one of the holder members having recess in the Seat of the blades thereon in which said boss seats for positioning the pivot of the blades with respect to the holder member.

5. In 'the construction defined in claim 1 the holder comprising two members between which the blades are clamped; dowels for relatively positioning the two members rooted in one of said two members and extending into apertures in the other, the two blade members .being pivoted together, their pivotal connection being formed to afford a projecting boss, and one of the holder members having a recess in the seat of the blades thereon in which said boss seats, and the blades having respectively apertures through y which the dowels extend; whereby the connected blades are positioned at three points with respect to their seat in the holder.

6. In the construction defined in claim 1, the holder comprising two members between which the blades are clamped, one of said members having a stem provided with a threaded terminal which pro'ects through the o ther member, and a handle adapted to be screwed onto the terminal and operating as a nut to bind the two holder members together and clamp`the blades between them.

7 In the construction defined in claim l, the holder comprising two members between which the blades are clamped, one of said members having a hollow boss projecting from the side oppositethe seat of the blade, the' other member having a stem which ex.- tends through said hollow boss; a threaded terminal pivoted to the stem substantiall at the transverse plane of the ends of the holY low boss, said ends being beveled in a plane which makes an acute angle with the plane of the blade `seat extended beyond the guard margin on the holder, and a handle adapted to be screwed onto said threaded terminal for seating against said beveled end of theV boss; whereby such handle extends obliquely with respect to the plane of the blade and serves to bind the clamp by the two members together for clamping the blade by stress at right angles to that plane.

In testlmony whereof, I have hereunto set my hand at Chicago, Illinois, this 23d day of December, 1919.

GEORGE BROWNING.

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