US1942049A - Safety razor and stropping attachment - Google Patents

Description

Jan. 2, 1934. H. CORDREY H,942,U49

SAFETY RAZOR AND STROPPING ATTACHMENT Filed Feb. 4, 1951 INVENM'JR ama??? 80rd g. a I

ATTORNEY Patented Jan. 2, 1934 UNITED STATES SAFETY RAZOR AND STROPPING ATTACHMENT Hancil Cordrey, Chula Vista, Calif. Application February 4, 1931. Serial No. 513,245

3 Claims.

My invention relates to a safety razor and stropping attachment, and the objects of my invention are:

First, to provide a safety razor having a novel 5 form of blade;

Second, to provide a safety razor having a relatively rigid blade which requires no backing for supporting it in the proper position on the guard;

M Third, to provide a razor in which the blade is secured at its endsonly, thus leaving the entire upper surface exposed;

Fourth, to provide novel, readily shiftable clamp means for securing the blade in position;

Fifth, to provide a blade clamping means which may be readily engaged and released by the razor handle; Y

' Sixth, to provide a blade clamping means which may be released sufliciently for permitting removal of the blade without entirely removing the handle;

,Seventh, to provide a novel attachment for supporting the blade on the razor handle in a position for stropping;

Eighth, to provide a stropping attachment adapted to be normally carried within the handle of the razor;

Ninth, to provide a strapping attachment adapted to clamp the blade in position on securing the razor handle to said attachment, and, Tenth, to provide a combined safety razor and stropping attachment of simple construction and few parts which may be readily cleansed, and having a blade lending itself to repeated resharpening and which is extremely compact in form.

With these and other objects in view as will more fully appear hereinafter, my invention consists of certain novel features of construction, combination and arrangement of parts and portions as will be hereinafter more specifically described and particularly set forth in the appended claims, reference being had to the accompanying drawing, and 'to the characters of reference thereon, which form a part of this application,

in which:

Figure 1 is a partial perspective view of my novel razor; Fig. 2 is an enlarged end view in elevation; Fig. 3 is an enlarged plan view there-' of, with the handle removed, certain portions being broken away to facilitate the illustration; Fig. 4 is an enlargedlongitudinal sectional view thereof, certain portions being broken away and other portions being shown in elevation; Fig. 5 is a longitudinal view of the stropping attachment, showing the blade and handle in section, and Fig. 6 is a sectional view through the end of the blade and handle.

Similar characters .of reference refer to similar I parts and portions throughout the several views 00 of the drawing.

The principal parts of the invention in the form shown comprise the guard plate 1, clamp members 2 and 3, stud 4, socket member 5, handle 6, cap '7, bladestropping support 8, and jaw member 9, and blade 10.

The guard plate 1 is made preferably from a rectangular metallic plate of oblong form and has a slightly .arcuate transverse cross-section, as clearly shown in Fig. 2. The marginal portions of the guard are notched at intervals, forming spaced apart, substantially rectangular tongue portions 1a. These arebent downwardly at an angle to the central portion of the guard, as best shown in Fig. 2. From the mid point of the guard plate, perpendicular to the median line thereof, extends a stud 4, the outer portion thereof having screw threads 4a. Extending longitudinally with the guard plate from either side of said stud are the clamp members 2 and 3. 0 These members are substantially flat metallic strips, having reduced outer end portions 2a and 3a, respectively, which are bent to form hook portions 2b and 3b, as more clearly shown in Fig. 4. The inner surface of the tip portion 2c of the hook portion 2b is bevelled slightly, that of the hook portion 3b,being of the same form, but not appearing in the illustration. The purpose of this will appear in what follows.

The clamps 2 and 3 are held in position at their outer ends by means of the guide portions lb, preferably formed by bending a substantially U-shape portion formed fromthe guard plate 1, at right angles, as clearly shown in Figs. 2 and 4. The guide portions 1b bridge an aperture 1c in the guard plate 1, just inside its ends. This aperture permits of the clamp members 1 being disengaged from the guide portions lb when the blade -10 is removed,thus permitting all'parts to be disassembled for cleansing or replacement.

At a point'intermediate the ends. each clamp member is provided with a detent 2e, 3e, preferably formed by indenting the opposite surface of the clamp as indicated in Fig. 4. These detents 05 are so related to the handle, that they may be readily gripped by two finger tips while holding the handle, thus permitting the clamps to be easily and quickly moved by the hand gripping the handle to permit the removal of the blade v 7, the latter reference to Fig tend substantially well down.

pping the handle with their joint axis substantially coincident withthe axis of the stud 4. When placed with the inner ends of members 2 and 3 in abutment, as indlcated in Figs. 3 and 4, said protrusions 2d and 3d are substantially concentric with said stud 4, the threaded portion 4a thereof projecting therefrom. The handle 6 is'tubular in form and is internally threaded at its outer end to receive the complementarily threaded portion 7a of a cap being preferably knurled and of slightly larger diameter than the handle 6, The

opposite end of the handle 6 is provided with a substantially cylindrical socket member 5, rigidly secured to the handle in any suitable manner. Said socket member is provided with an axial screw threaded bore a,.adapted to" receive the screw threaded portion 4a of stud 4. The outer end portion of the socket member 5 is provided with an inwardly tapering counter bore 5b, forming a socket which is of a diameter sufficient to embrace the protrusions 2d, 3d, when the clamps 2 and 3 are shifted toward the center of the guard plate. v By virtue of the taperedsocket the clamps 2 and'3 are drawn together when the bandle is screwed onto the stud 4.

The blade is formed from suitable razor blade steel bars, ofa substantially triangular section bounded by an arcuate base 10a and arcua-te equilateral sides-10b, said base and sides being as to form concave surfaces to conform to'the curvature of grinding wheels. The blade thus has a relatively thick, central ridge portion 100 and oppositely tapering tions 10d, the concavity of the side and base 1 surfaces producing a naturally attenuated edge portion, which is formation inherently susceptible to the of a keen edge. It will be noted by 2, that the lower surface of the blade lies contiguous to the upper surface of the guard plate 1, and the cutting edges exalong theline formed by the root of the tongueportions. 1a. At each end, symmetrical with the median line ofthe blade profile, is provided-a recess 10c, extending lengthvwise with the blade and of a width and depth suflicient to readily receive the tip portions 2c and 3c of the clamps. As best shown in for the clamp member 2, the beveled lower surface of the tip 2c is adapted to bear against the lower edge of the recess 10e, so that, as the clamps are drawn inwardly, a downward pressure is simultaneously exerted on the blade at each end. The inherent resiliency of the clamps 2 and 3 is suflicient to allow for a slight bending thereof due to this pressure. The blade 10 is thus tightly gripped at both ends and rigidly held against the guard plate 1, when the handle is screwed It is obvious that the arrangement disclosed permits the blade to be removed after slackening the handle sumciently to allow the clamp tips to disengage the blade: ends. Thus, while gripand manipulating the clamps with one hand, the blade may be remo y e d or placed in position by the other hand.

Within the handle 6 is accommodated a strap,-

1 per attachment, comprising a bar 8 of substantially semi-circular crossesection and of a lengthsomewhat greater than the blade, -and having a blade.

blade por-" Fig'. '4

' plate, said razor blade extending longitudinally therewith, said blade 135 straight, flat, inner surface 8a, against which the blade is adapted to be placed in the manner illustrated in Figs. 5 and 6. Integral'with and at the one end of the bar 8 is a tip portion 8b, having an inclined lower surface, adapted to engage the upper edge of the recess 10a in the blade 10, when the latter is in position on the bar 8. The opposite end of bar 8 is completely cylindrical, forming a journal portion and a screw threaded stem portion 8d, the latter adapted to be received by the threaded bore 5a on the handle 6. Slidably mounted on the journal portion 80 is a tubular collar 9, having a projecting tip portion 9a, adapted to enter the contiguous recess lOe in blade 10. The upper surface of the tip 9a is bevelled in like manner to tip 8b, so that a downward pressure is exerted on the blade when the collar tip is forced against the This is efiected'by means of the handle 6, the socket portion 5 thereof engaging the outer endof the collar 8, when the handle is screwed onto the stem portion'8d.

With the blade mounted on the attachment, the rounded surface of the bar 8 is complementary to the ridge 100 of the blade 10, as best shown in Fig. 6.

It is obvious that the blade may be readily stropped'by the usual back and forth movement and tilting action at the end of each stroke, with either the ridge or the bar 8, resting on the stropper. This action may be manually or mechanically controlled accordingto the type of strqpper used.

As a result of the inherent rigidity of the blade, and the manner of securing it in position for use, all possibility of the user cutting himself is obviated, since there is no possibility of a flexure of the blade occurring while in use. In consequence of the formation of the'blade edge, the latter may. be maintained in a suitably sharp condition by repeated stroppings, the life of the blade, 'under ordinary conditions, being practically limitless.

In providing a stropping attachment adapted to be accommodated within the handle, thus taking up no extra space and obviating its misplacement when not required, the combination assumes an extremely practical and compact form.

While I have shown a particular arrangement and combination of parts and portions, I do not wish to be limited to such arrangement and combination, but desire to include all the arrangements and combinations as are covered by the appended claims.

'I claim:

' 1. In a safety razor, a guard plate, a razor blade adapted to be supported on said guard having a ridged portion being provided with recesses within the margins of each end of said ridged portion, clamps, means to slidably support said clamps at each end of said guard plate, said clamps having a tip portion provided with a beveled surface at one end shiftable in the longitudinal axis of said blade into and out of said recess, means comprising detents provided at points intermediate the ends of said clamps for manually shifting the latter relative to said recesses, handle means for said guard plate, andmeans comprising complementary truncated semi-conical protrusions on the other end of said clamps engageable within a tapered counterbore in said handle and operable on movement of said handle relative to said guard plate to shift said clamps toward the center of said guard plate and thereby exert a downward pressure of said beveled surface upon the lower edge of said recess whereby to force the face of the blade opposite said ridged portion in engagement with said guard plate.

2. The combination with a two edged blade having apertures in the ends thereof, a guard member including a stud at the mid-point thereof and perpendicular to its median line, and a handle provided with an inwardly tapering counterbore forming a socket and an axial screw threaded bore adapted to receive the threaded portion of said stud; of a pair of clamp members extending longitudinally with the guard member from either side of said stud and having reduced outer end portions which are bent to form tip portions, the inner surface of the tip portion of said hook portion being slightly beveled and engageable with the lower edge portion of said aperture, the inner end portions of the clamp members being provided with complementary truncated semi-conical protrusions, the joint axis of which is substantially coincident with the axis of said stud, said protrusions being substantially concentric with said stud with the threaded portion of said stud projecting therefrom when the inner ends of said clamps are placed in abutting relation, said socketbeing adapted to embrace said protrusions and draw said clamps together when said handle is screwed onto said stud whereby through the medium of said clamps to force said blade against said guard plate, means to slidably and detachably support said clamps to said guard plate and means to manually shift said clamps whereby to detach said blade upon partial release of said handle from said protrusions.

3. In a safety razor, a blade, ablade support, a handle securable to said support, clamp means shiftable on said support, said clamp means being provided at one end with a beveled tip portion engageable with said blade at its ends and within the margins thereof and with complementary truncated semi-conical protrusions at the other end engageable within an inwardly tapering counterbore in said handle, grip means formed intermediate the ends of said clamps for manually shifting said clamps relative to said recess upon partial release of said handle with said protrusions, and means to move said handle relative to said support whereby to draw said clamps inwardly and force said beveled tip in gripping engagement with said blade to clamp it to said support.

HANCIL CORDREY.

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