US1549225A

US1549225A - Safety razor

Info

Publication number: US1549225A
Authority: US
Publication date: 1925-08-11
Anticipated expiration: 1942-08-11

Description

Aug. 1-1, 1925.

H. A. sKlPwoRTH SAFETY RAZOR Filed Aug. 31 1922 Patented Aug. 11, 1925..

UNITED STATES HARRY A. SKIZPWORTI-I, 0F PORTLAND, OREGON.

SAFETY RAZOR.

Application filed August 31, 1922.

To aZZ whom t'may concern:

Be it known that I, HARRY A. SKIPWORTH, a citizen of the United States of America, and resident of Portland, in the county of Multnomah, in the State ofOregon, have invented certain new and useful Improvements in Safety Razors, of which the following is a specification, reference being had to the accompanying drawing.

My invention relates to that class of razors known as safety razors, and has for its object the production of such a razor which is comparatively cheap and simple but effective in construction, whose parts may be easily disassembled for cleaning and sharpening, whose blade is preferably of the hollow-ground type of the ordinary razor, and whose handle is readily convertible and adapted to be used either witha guard for shaving or without the guard for sharpening and keeping the bared blade in fit condition for use.

WVhat constitutes my invention will be hereinafter specified in detail and succinctly set forth in the appended claims.

In the accompanying drawing,

Figure I is a side elevation of my invention in present preferred form of embodiment complete, the blade and its guard being shown in end view, the contents of the hollow handle being shown in dotted lines.

Figure II isa plan view of Figure I taken at right angles thereto, and looking at it from above.

Figure III is a side elevation of a portion of the hollow handle detached from the guard and showing its screw hub reversed to present to view the stropper-blade-holder, with the blade partially introduced into it.

Figure IV is a side elevation of my razor guard detached, looking at it from the side to which the handle is attachable, and showing in dotted lines the spring clips which serve to hold the blade in place against the opposite side of it.

Referring to the numerals on the drawing, 1 indicates a razor blade of any suitable shape and dimensions, but preferably of the hollow-ground type. Fitting the blade 1 at all points is a guard substantially of the kind common to safety razors, except in respect to certain distinctive differences as specified. It is preferably made of one piece of suitable spring metal so as to include a row of teeth 3 of any usual or preferred Shape. The back, also, of the guard, towit,

Serial No. 585,368.

that portion of it that is disposed on the edge of it opposite to the row of teeth 3, is provided with two spring clips 4: and 5 shaped so as to fit snugly against the face of the blade 1, when they are bent into final shape towards one side of the guard as shown, for example, in Figure I.

Between the said clipsthe back of the guard is provided with a medial handleplate 6 which is bent towards and in operative juxtaposition to the opposite side of the guard from that towards which the clips 4 and 5 are bent. In the manufacture of my guard and in its parts appurtenant thereto as just described, a flat blank is made and cut or otherwise fashioned into desired shape to form the teeth 3 and the several members 4, 5, and 6. Afterwards'the teeth may be, if desired, bent to curvature as shown in Figure I, and the remaining members bent to shape as described and as shown also in that figure. The metal of the guard, it being preferably made of spring steel, is then properly tempered to give to it requisite hardness, and to give to the clipst and 5 the resilient degree of stiffness desired. If preferred the guard may be finished with a surface of silver or other plating.

It should be observed that the guard, as isshown clearly in Figure I, is made for the purpose specified below of varying thicknesses in respect to its several parts or members. The part 7 from which the clips 4 and 5 and the plate 6 extend and which may be designated its backbone, is of a maximum thickness such as will be sufficient to impart to its union with the plate 6, which is preferably of corresponding thickness, a rigid and unyielding stability. To each of the clips 4: and 5 a substantially corresponding thickness, may be imparted throughout so much of their longitudinal extent as is nec essary to form in each an arch 8. Beyond that arch from an angle 9 which bounds it on one side each clip is slightly tapered in cross-section or thickness so as to render the clip terminals at the same time stiff but resilient. The guard portion proper of the guard or that plate 10 which is disposed between the clips 4 and 5 and the handle plate 6 as illustrated in Figure I is imperforate and is made of such thickness of metal as may impart to the said plate a degree of resiliency which will permit itto yield under compulsion of an impinging screw 11 which is threaded through an aperture provided for its accommodation in the rigid plate 6. The 1105912 of the screw 11 is rounded and makes impingement against that slight concavity in the plate 1 that is conformable to the shape of the blade 1, with the efl'ect of driving the entire plate bodily towards the clips 4: and 5 in such manner as positively to lock the blade in place between the said plate and the said clips, the degree of resiliency of the clips being such as to prevent possibility of any breaking strain upon the blade.

At the same time the combined presence of the guard, the blade, and the clips 4L and 5, opposes resistance to the advance of the screw 11 through its threaded aperture in the plate 6, sufficient to jam the threads of the 'screw' into the threads of said aperture with nut-lock effect upon the screw. 7, v

The screw 11 is preferably terminally and .coaXially' carried upon one'end of a hub of v greater diameter than the screw and is provided with two externally threaded portions 'lee'and 15, separated by a projecting intermediate zonelli, disposed between them.

ofthe portions 1 1 and 15 is threaded to lit the internally threaded open end of a hollow l andle 17, which is thereby adapted toabe screwed upon either end of the hub and into close abutment against the zone 16 which, in either instance, acts as an annular stop-piece to the handle. The threaded portion 1a of the hub terminates in the screw 11 already described while its portion 15 terminatesin an oppositely extending blade 'holder consisting of a shank 18 and a pair of spring clips 19 and 20 z'tdapted to receive andliold the back of the blade 1 between them, after the manner of blade holders familiar in the art, and therefore, in new of the illustration made in the drawing,

unnecessary to describeniore in detail.

The transverse d mensions of the bladeholder are such as to adapt it to lit easily within the'hollow 'ot' the handle 17, which constitutes a case or covering for it while the razor is being used for shaving.

The following is brief description of my razor and its method of manipulation in use. Assuming that the hub and handle 17 are assembled as shown, for example, in Figure plate 100i. the guard.

the screw impinges against the plate 10 with the simultaneous effect of fastening the blade 1 and oi locking the screw 11 in place, respectively. After shaving, the screw 11 being loosened, the blade 1 may be readily ren'ioved from the guard. Then, upon separating the screw 11 from the plate 6, the handle 1? may be unscrewed from the hub, the'blade-holder withdrawn, and by reversal of the hub the blade-holder is made ready for reception or" the blade for honing or stroppingpurposes in the usual manner.

lVl'iat I claim is:

1. A safety razor comprising the combination of a blade, a guard formed in one piece with yielding plate, blade retainingmeans upon one side thereof and a r g1d handle- 2. A guard for a safety razor consisting of the combination of an integral member of varying thicknesses, comprising a handleplate orsul'licient thickness to render it. rigid, and blade'retaining means, with a platehctween said means and handle-plateof diminished thickness so torender it yieldingly resilient relatively to the rigid handleplztte, whereby a member operatively mounted on the handle-plate may be made to actuate the resilient plate with the blade-holding ,cfiect described. a i y In testimony whereof, I have hereunto set my nand in the presence of two subscribing witnesses.

HARRY A. SKIPWORTH." lVitnesses J OHN B. GLELAND, Josnrn L. A'rnms.