US1390277A - Safety-razor - Google Patents

Description

W. J. DAVIDSON.

SAFETY RAZOR.

APPLICATION FILED FEB. 26, 1919.

PatentedSept. 13, 1921.

' ATTORNEY.

STATES OFFICE.

WILLIAM JOSEPH DAVIDSON, 0F NEW YORK, N. Y.

SAFETY-RAZOR.

Application filed February 26, 1919. Serial No. 279,270.

To all whom it may concern:

Be it known that I, W'ILLIAM J. DAVIDSON, a subject of the King of Great Britain, and resident of New York, in the county and State of New York, have invented certain new and useful Improvements in Safety- Razors, of which the following is a specification.

This invention relates to safety razors, and it has for its object to provide a simple and improved razor of this class in which the blade will be effectively protected and which can be conveniently stropped without removal of the protective guard for the blade and without disassembling the bodyholder, blade and guard.

A further object of my invention is to provide an improved safety razor which can be variably employed, without substitution of any parts, either as a safety type razor having the handle at right angles to the blade or as an ordinary type razor having the handle in line with the blade.

In the drawings- Figure 1 is a perspective view illustrating my improved safety razor with its parts adjusted for use as a razor of ordinary type.

Fig. 2 is a detail cross-section, on the line 40-00, Fig. 1.

Fig. 3 is a detail cross-section on the line g -g Fig. 1.

Fig. 4 is a detail sectional view, on the longitudinal plane indicated by the line 2-2, Fig. 2.

Fig. 5 is a detail perspective View illustrating the reliminary adjustment of the handle portion for use as a razor of the usual safety type having a right-angular relationship between the blade and handle.

Fig. 6 is a detail perspective view illustrating the final adjustment of the handle from the position shown in Fig. 5.

Fig. 7 is a detail perspective view illustrating a modified construction of the body bar and handle for use solely as a razor of ordinary type having the handle in line with the blade.

Corresponding parts in all the figures are denoted'by the same reference characters.

Referring to the drawings ,1 designates the main body bar of the razor, which is of a longitudinal extent related to the length of the blade employed and is of suitable or desired external contour. In the bottom surface of the body bar is provided a longitudinal recess, 2, for the slidable reception of a removable blade, and said recessed port on has opposite inwardly projecting longitudinal flanges or lips, 3-8, for engag ng corresponding shoulders, 44, at opposite sides of the top of the blade, to support the blade within the body bar after it is slid and set into position therein.

The removable blade, 5, may be of any suitable or adapted construction, but the blade shoulders t-4 are preferably formed by the bottom terminal ends of a longitudinal top socket, 6,. within which the cutting blade element is fixed and carried.

7 designates the safety guard member, which is detachably mounted upon the body bar 1 so that it has a swinging or pivotal movement laterally with relation thereto. The guard member has a longitudinal extent related to the length of the blade, and in its preferred construction comprises end plates, 8--8, connected by longitudinal parallel bars or plates, 9-9, located intermediately of the bottom and top plane of the guard and separated a distance slightly in excess of the thickness of the blade, between which side bars or plates the blade is positioned and the swinging or pivotal move ment of the guard laterally is limited by said side bars or plates in their action as side stays against the blade. The outer end plate Sis provided with a lengthwise slot, 10, to enable the insertion and removal of the blade to position without removal of the safety guard from the body bar. In the preferred construction for detachably mounting the guard 7 upon the body bar 1 and permitting its lateral swinging or pivotal movement thereon, the upper ends of the end plates S8 are respectively provided with perforations, 11, receiving a set screw, 12, and the set screws at opposite ends of the guard engage threaded recesses, 1%, respectively in the opposite ends of the body bar 1, the guard thus having its pivotal bearing upon said securing screws and the latter being adjustable to regulate the freedom of the pivotal action of the guard.

The safety element of the guard is constituted by a longitudinal roller member, 15, which is mounted in bearings, l616, at the lower ends of the end plates 88 of the guard member and extends between the same. Said roller is spirally grooved circumferentially, as at 17, which groove operates as a guide in the angle of movement both in the cutting action of the blade in shaving and in the operation of stropping. The relative association and arrangement of parts is such that the cutting edge of the blade, when the members are in assembled operative position, will extend on a plane immediately above and just a short distance from the roller member 15.

The variable construction as illustrated in Figs. 1 to 6 comprises a short connection member, 18, slidably mounted upon and straddling the body bar 1 and conforming in cross-section to the cross-section of said bar. To the inner end of said connection member is pivotally connected, as at 19, an extended handle member, 20, so that the latter will be permitted a lateral swinging action with respect to said connection member. The body portion of said extended handle member 20 preferably conforms in cross-section to the cross-sectional contour of the body bar 1, having longitudinal side wings, 21-21, connected by a top portion, 22, and is permitted a slidable movement longitudinally upon and with respect to the body bar. Said side wings, at their inner terminal ends just adjacent the pivotal connection 19 are .cut away, as at 23, so that when the handle member 20 is swung to position at right angles to the body bar (as shown in Fig. 6) said edges will conform to the side of the body bar and operate as a brace or stay against the same to maintain the relative right-angular position of the handle.

The operation of the variable handle construction as just described is such that when the slidable members 18 and 20 are brought to the position upon the body bar 1 in which the body portion of the member 20 has a longitudinal engagement with said bar, as shown in Fig. 1, the handle member will be maintained in a position extending in line with the blade and the safety razor is thus adapted. for use as an ordinary razor of this handle type. l/Vhen it is desired to use the razor as the usual safety type having the handle at right angles to the blade, without disassembling the associated members of the construction, the pivotally-connected members 18 and 20 are slid upon the body bar 1 toward the inner end of the latter until the handle member 20 is free from the bar and can be swung laterally to the position as shown in Fig. 5, after which the connection member 18 is slid back to a central position on the body bar 1 and the handle member 20 is brought to and fixed in the position as shown in Fig. 6, in which it projects at right angles to the blade. To enable the use of the razor under the same conditions and circumstances as an ordinary type razor having the handle in line with the blade, when the slidable members 18 and 20 are both in longitudinal engagement with the body bar 1 in the position shown in Fig. 1, the outer end portion or extension of the extended handle member 20 is provided with a pivotally-mounted swinging arm, 24, which will correspond in use to the body handle of an ordinary razor which receives the blade when the razor is in closed position, and this swinging arm is preferably of a cross-sectional contour corresponding to the cross section of the extension of the handle member 20, so that it will fold downwardly neatly upon the same into a positionconforming thereto when the handle member is employed at right angles to the blade, as shown in Figs. 5 and 6.

In the foregoing construction involving a slidable handle structure, the top surface of the body bar 1 is preferably inclined at an angle, as at 25, which will afford a slant in which the handle member will have the proper angle of position with relation to the fiat plane of the blade when the razor is used under the conditions and type as illustrated in Fig. 6. I

In Fig. 7 I have illustrated one of the modified constructions involved in the general types of improved safety razors having theleading features of my invention, which modified construction relates to the adaptation of the improvements to a razor designed solely for use as the ordinary type in which the handle is in line with the blade. In this construction as shown, the slidable and pivoted handle members as before described are dispensed with and the body bar 1 is extended rearwardly beyond the blade-carrying portion and the safety guard, as at 26, this extension being preferably integral with the body bar 1 and bowed or curved upwardly. Said extension thus forms a handle in line with the blade, as in an ordinary razor, and in this type of construction the body bar 1 is preferably of rounded exterior shape, as at 27, at its head or top, to give a more graceful contour and lighter body. Adjacent the outer end of the extension handle 26, is pivotally mounted, as at 28, the usual supplementary handle member, 29, of this type of razors, which consists of separated side pieces or plates between which the main cutting portion of the razor is received when the razor is closed and out of use.

The operation and advantages of my inventlon will be readily understood. The improvements provide a safety razor, which may be adaptable for use variably either as a razor of ordinary type in which the handle. is in line with the blade or as the usual safety type in which the handle is at right angles to the blade, in which the blade is readily and conveniently insertible to and removable from position and the safety guard is detachably and adjustably carried by the body bar, the improved construction being such that the safety guard has a swinging or pivotal movement laterally with relation to the blade a sufficient and operatively-limited distance to guard the action of the cutting edge of the blade either in the act of shaving or in the act of stropping, and thus the razor may be used just as an ordinary razor having a fixed blade and correspondingly stropped without removal of the safety guard and under the safety action of the guard member.

I do not desire to be understood as limiting myself to the detail features of construc tion as herein shown and described, as it is manifest that variations and modifications therein may be resorted to, in the adaptation of my invention to varying conditions of use, without departing from the spirit and scope of my invention and improvements. I therefore reserve the right to all such variations and modifications as properly fall within the scope of my invention and the terms of the following claims.

Having thus described my invention, I claim and desire to secure by Letters Patent:

1. A safety razor, comprising a main body member carried in connection with the operative handle of the device, a blade insertible to fixed position in connection with and projective from the under side of said combined body and handle member, members pivotally connected with said body member and depending therefrom respectively at opposite ends of the blade, side bars extending longitudinally between said depending pivotal end members and connecting the same in fixed relation, said side bars being located between the under side of the body member and the lower ends of said depending end members and respectively at opposite sides of the blade and operative longitudinally against opposite sides of the blade as a stay throughout the longitudlnal extent thereof to limit the pivotal movement of said end members, and a bottom guard bar journaled in the lower ends of said re spective pivotal end members and extend ing longitudinally between the same beneath the cutting edge of the blade.

2. In a safety razor comprising a main body member for carrying the blade in depending position therefrom, a safety guard member consisting as an entity of end members having a pivotal connection with said body member and depending therefrom respectively at opposite ends of the blade and side bars extending longitudinally between said end members and connecting the same in fixed relation, said side bars being located in the plane of the face of blade and respectively at opposite sides thereof and operative longitudinally against the opposite sides of the blade as a stay throughout the longitudinal extent thereof to limit the pivotal movement of said end members, and a bottom guard bar journaled in the lower ends of said respective connected pivotal end members and extending longitudinally between the same beneath the cutting edge of the blade.

3. In a safety razor, the combination, with a guard member pivotally depending from the main body member which carries the blade and comprising end members respectively at opposite ends of the blade and side bars carried by said end members and operative as a stay against sides of the blade to limit the swinging movement of said guard member, of a roller member journaled in the lower ends of said respective pivotal end members of said swinging guard and extending longitudinally between the same beneath the cutting edge of the blade.

42. A safety razor comprising a body bar, a connection member slidably operative longitudinally upon said bar, and a handle member pivotally connected with said connection member and slidably operative longitudinally upon said bar, the pivotal relationship being such that when the connection member and handle member are in normal position upon the body bar the handle member will be retained in line with said bar and when only the connection member is in position upon the body bar the handle member can be swungupon its pivot laterally with relation to the body bar, whereby the position or projective angle of the handle with relation to the body bar may be varied.

5. A safety razor comprising a body bar, a member slidably embracing said bar laterally, a handle member slidably embracing said bar laterally and having an end extension pivoted upon said first named member, the sides of said handle member constituting means for retaining said handle member in position in line with said bar, and the ends of said sides back of the pivotal extension constituting means for retaining said handle in operative position upon its pivotal mounting at an angle to said bar.

In testimony whereof I have signed the foregoing specifications.

WILLIAM J OSEPH DAVIDSON.

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