US1807342A - Safety razor - Google Patents

Description

May 26, 1931 F. PELDSI 1,807,342

SAFETY RAZOR Filed May 28, 1930 Patented May 26, '1931 earner orator FRANK PELOSI, OF HAVERHILL, IVIASSACHU$ETTS SAFETY RAZOR Application filed May 28,

This invention relates to safety razors and has for its principal object the provision of an improved razor of this type which comprises a relatively few parts of simple and economical construction, which permits easy and speedy insertion or removal of a separable blade, and which may be small in size and light in weight without sacrifice of operative efiiciency. Further objects and specific features of construction and arrangement of the improved razor will be apparent from the following description and will be pointed out in the appended claims.

A recommended embodiment of the inven- 115 tion is illustrated in the accompanying drawings, in which:

Fig. 1 is a front view of the improved safety razor containing a blade secured in posi tion for use;

Fig. 2 is a rear view thereof;

Fig. 3 is a section on line 3-3 of Fig. 1, with certain parts in elevation;

Fig. 4 is a similar section showing the position of the parts when the blade is to be inserted or removed;

Figs. 5 and 6 are rear and bottom views respectively of a lock plate forming part of the razor;

Fig. 7 is a top view of a guard member which cooperates with the lock plate to hold the blade in fixed position at a proper shaving angle, a portion of the blade being shown to indicate its normal disposition with respect to the guard; and v Fig. 8 is a section on line 88 of Fig. 7.

In the particular embodiment chosen for the purpose of illustration, the razor comprises a handle 10 having an axial opening 11 theretl'irough, a guard member 12 mounted in one end of the handle, a rotatable knob or lock nut 13 at the opposite end of the handle, a lock plate 14 arranged to cooperate with the guard to hold a blade 15 therebetween, and an adjusting. stem 16 extending through the hollow handle and having one end engaging a threaded opening 17 in the nut 13 and its opposite end passing through an aperture 18 in the guard 12 and secured to the lock plate. as by a rivet or pin 19 which projects through an opening 20 in plate 1 1 1930. Serial No. 456,425.

and is headed over on the top surface of the plate. The stem and lock plate may thus be moved longitudinally of the handle by rotating the lock nut to secure the bladein working position (Fig. 3) or to separate the plate from the guard member and permit insertion or removal of the blade (Fig. 4).

In order to prevent separation of the several elements of the razor (except the blade) and hence to provide a unitary and compact assemblage, inward movement of the stem relatively to the threaded lock nut 13 is preferably limited by a washer 21 which is affixed to the stem end as by a rivet 22 and which is received within an annular recess 23 at the outer end of the nut and seats at the bottom of said recess, when the nut is loosened as far as possible. This feature of my invention is highly advantageous in obviating possible damage to the razor elements which tend to fall apart when the member connecting a group of separable parts is cost of producing the razor and does not detract frointhe pleasing external appearance of the handle.

The guard member 12 may have the usual teeth 24 and is preferably provided with strong and rigid side wings 25 which protect the teeth from injury and which are preferably formed with opposed recesses 26 for re ceiving the forward corners of the razor blade. As best shown in Fig. 7 the rearward. corners of the blade project over the wing shoulders 27 so that the blade may be readily removed from the guard by lifting one of said projecting corners with a finger tip. The face of the guard member may also have an upstanding ledge 28, parallel to its toothed edge, to assist in aligning the blade upon its flat seat.

The razor blade is rigidly clamped in seated position by tightening the lock nut against the end of the handle, thereby drawing the forward portion of the lock plate 14 against the upper face of the blade, so that the blade is gripped between the plate and the guard. The guard preferably has arearwardly projecting central boss 29, and the plate is provided with spaced rearward flanges 30 engaging the back of the guard on opposite sides of the projection 29, the latter being received within a complemental recess 31 between said flanges, so that the plate is held in proper cooperative relation to the guard during the :uljustment of its position. To this end, the flanges 30 are suliiciently deep to engage their eomplemental guard surfaces when the plate is most remote from the guard,

shown in Fig. 4t, thereby previ-mting relative rotation between the plate and guard in any position thereof.

The structural parts of the razor above described may be manufactured economically and assembled with a minimum of labor and expense. F or example, the handle 10 may be made 01" a well known, phenolic condensation product. hard rubber or other suitable composition, in attractive colors if desired; or it may consist of metal tube or other rigid material. guard member 12 maybe a die casting requiring no further machining operations. The lock plate l lmay be a pressed metal part of simple manufacture. And the lock nut 13, stem 16 and washer 21 are easily produced on stand, automatic machines.

The external surfaces of the metal parts may be nickle-nlated or gilt-plated to enhance the pleasing appeance of the product. The several elements are quickly assembled as a unitary device by securing the lock plate and washer at opposite ends of: the central stem, after mounting the handle, guard and lock nut thereon. A common type of flat and thin steel blade, either single or double edged, may be sat sfaetorily used with my improved razor. lit will be apparent however that the guard and lock plate may be arranged to accomn'iodate other types of blade while retaining the meritorious features of my invention; and that other structural details may be varied within limits without departing from the essence of this invention or defined in the followin claims.

As heretofore indicated, my improved razor may be made in small sizes, particular ly suitable for use by ladies in shaving at the arm pits; and for such purposes the toothed edge of the guard and the blade edge may desirably be curved to conform to the contour of the underarm.

I claim:

1. A safety razor comprising a. hollow. handle, a guard member mounted at one end of the handle, a stem extending through the handle and guard, a locking plate secured at one end of the stem and cooperating with the guard to hold a blade therebetween, nut threading on the opposite end of the stem and bearing against the end of the handle to draw the plate toward the guard member and clamp the blade therebetween, and means on the stem engaging the nut to limit outward rotation of the nut.

2. A safety razor comprising a hollow handle, a guard member mounted at one end of the handle, a stem extending through the handle and guard, a locking plate secured at one end of the stem and cooperating with the guardto hold a blade therebe ween, a nut threading on the opposite end 01" the stem and bearing against the end of the handle to draw the plate toward the guard member and clamp the blade therebetween, and a washerfixed on the stem and seating against thenut when the latter is loosened to permit removal ot the blade, thereby to limit rotation of the nut.

3. A safety razor comprising a hollowhandle, a guard member mounted at oneend of the handle, a stem extending through the handle and uard, a. locking plate secured at one end of the stem and cooperating with the guard to hold a blade therebetween, a nut threading on the opposite end. of the stem and bearing against the end of the handle to draw the plate toward the guard member and clamp the blade therebetween, the nut having a recess in its outer end, and a washer fixed on the opposite end of the stem and seating -ithin said recess whenthe nut is loosened to permit removal of the blade, thereby to limit rotation of the nut and prevent complete separation of the razor elements.

4. A safety razor comprising a hollow handle, a guard member mounted at one endof thehandle, a stem extending through the haudie and guard, alocking plate at one end of the stem and cooperating with the guard to hold a blade therebetween, a nut threading on the opposite end of the stem and bearing against the; end of the handleto draw the plate toward the guard member and clamp the blade therebehveen, means for limiting rotation of the nut to prevent accidental separation of the razor elements, and means associated with the guard member and locking plate for preventing relative rotation therebetween.

Signed by meat Boston, l /lassaehnsetts, this 26th day of May, 1930.

FRANK .PELOSI.

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