US1979404A - Safety razor - Google Patents

Description

Nov. 6, 1934. R. w. PAUTLER SAFETY RAZOR Filed Oct. 8, 1932 I N VEN TOR. 169V [4/ P7074156 BY A TTORNE Y.

Patented Nov. 6, 1934 UNITED STATES PATENT OFFICE 1 Claim.

My invention relates to improvements in safety razors.

It is a well known fact that the best shaving action is obtained when the razor is moved over 5 the face with its cutting edge at an angle to the path in which it travels, thus obtaining full benefit of the microscopic "saw teeth of the blade edge and producing what is known as the shearing cut. With the ordinary razor, this action is difficult to obtain and requires that the hand be held at an unnatural angle and position.

Withthe above in'view, it is the prime object 'of my invention to provide a razor by which the desired shearing cutting action will be obtained easily and naturally, and in reality will be the normal action of the razor as it is manipwhich the blade has angularly disposed and re-,

lated laterally opposed cutting edges which converge from one end of the blade toward the other, and a suitable supporting and clamping means for the blade, including a handle of square cross section so arranged that its opposite sides or faces nearest the cutting edges of the blade are disposed at equal oblique and acute angles to these edges, but in parallelism with i the major or longitudinal axis of the blade, while the opposite and intermediate faces of the handle are disposed at larger oblique, angles to the cutting edges and at right angles to the axis of the blade.

,0 With the foregoing and other objects in view, my invention resides in the novel construction and arrangement of parts as hereinafter set forth and claimed, reference being had to the accompanying drawing, wherein Figure 1 is a side view of a safety razor constructed and arranged in accordance with my invention.

Figure 2 is a top plan view. Figure 3 is a fragmental side view, partially in cross section, showing the parts of the razor separated to illustrate their connection.

Figure 4 is a plan view of the blade alone.

Figure 5 is a diagrammatic view of the blade and handle alone as viewed in inverted plan or looking at the end of the handle, to show the 'fere with the edges of the blade in use.

relation between the angular cutting edges of the blade and the square handle and the path through which the razor is moved in shaving.

'As shown in the drawing, the razor is formed of four major parts comprising a handle 1, a guard plate 2, blade 3 and clamp plate 4, which are connected and arranged in substantially conventional manner. In accordance with my invention, however, the guard plate 2, blade 3 and clamp plate 4 are all of similar somewhat triangular form or shape with their opposite lateral margins converging from one end to the other, but terminating considerably shortof a meeting point or junction, so that the narrower ends of the parts are relatively wide and blunt as shown. The handle 1 is of elongated form made of any suitable material, and has in what is herein termed-its upper end, an axially extended threaded socket 5, the handle throughout its length being of square cross section for a useful purpose to be set forth, and preferably having its four faces thus formed knurled or roughened as indicated at 6 in Figure 1. v

The guard plate 2 has the usual spaced and laterally projecting guard teeth 7 formed along its converging and angular side margins, and has a central aperture 8 and outwardly spacedapertures 9 and 10 all located in line along its longitudinal axis as shown. The clamp plate 4 is substantially conventional in form, with its upper surface rounded off towards its converging angular side margins 11, which are thus tapered and thinned down so as to not inter- The clamp plate 4 has a central elongated, threaded stud 12 extended from its under side and relatively short lock studs 13 and 14 spaced outwardly from the stud 12, and all located along 'the longitudinal axis of the clamp plate, the arrangement being, of course, such that the threaded stud 12 may pass through the control aperture 8 in the guard plate 2, and the lock studs 13 and 14 may enter the apertures 9 and 10 to hold the parts together. The threaded stud 12 projects through the guard plate 2 a considerable distance to enter the socket 5 in the handle 1, and the parts may then be clamped together in usual manner by turning the handle 1.

The blade 3 is formed of thin, fiat steel, or similar material, and as aforesaid, is of somewhat triangular shape with its opposite lateral and angularly converging margins 15 sharpened -to act as cutting edges, while its ends 16 and 1'7 are left blunt. The blade has a central aperture 18 to pass the threaded stud 12 when the blade is mounted between the guard and clamp plates 2 and 4, and has outwardly spaced apertures 19 and 20 to pass the lock studs 13 and 14, whereby the blade will be securely locked and clamped between the plates when the handle 1 is turned to draw the parts together, the cutting edges 15 of the blade, of course, -projecting from the margins of the clamp plate 4 a short distance for the usual purpose. Attention is called to the fact that the lock stud 13 and the apertures 9 and 19 adjacent the smaller end of the clamp plate 4, guard plate 2 and blade 3, are all considerably smaller than the corresponding studs and apertures adjacent the larger ends of these parts. By virtue of this arrangement, the smaller end of the blade 3 is not weakened as it would be were the two apertures 19 and 20 of equal and the usual large size. The aperture 19 may be made extremely small and the larger stud and apertures depended upon to provide the greater part of the necessary rigidity and locking action. The handle when screwed up tight with the parts in the position shown is adapted to and must come to rest with two of its flat and parallel faces, as 21 and 21a, disposed in parallelism with the longitudinal axis of the blade 3 and the remaining intervening or connecting faces 22 and 22a, of course, at right angles to this axis, the relation between these faces and the blade being of importance and cooperatingwith the angular cutting edges 15 of the blade to provide the shearing cutting action desired in a natural manner, as will be pointed out. The converging lateral cutting edges 15 of the blade are, ofcourse, disposed and extended at an acute angle relative to the faces 21 and 21a of the blade, but this angle may be varied within certain limits, to secure the best shaving action, and such variation is considered within the scope of my invention.

In use, the razor is grasped by the handle 1 and brought to contact with the face and the usual straightaway stroke made. As shown in Figure 5, the path through which the razor blade travels in this stroke (indicated by the arrows 23) is parallel to the faces 22 and 22a of the handle and to the longitudinal axis of the handle, but the cutting edge 15 in use is at an angle to the path or stroke. The desired angular and shearing cutting action of the blade is thus obtained when the razor is moved with the usual and natural motion, which is in line with the axis of the handle and at right angles to the axis of the blade. The use of the square and relatively large handle 1 causes this action to be obtained with the normal grasp of the razor in which the thumb and forefingers of the hand grip the faces 22 and 22a, and so prevents the user from turning the razor at an angle to bring the cutting edge 15 at right angles to the stroke, as would happen were the handle round and easily turned in the hand. The utility of this square handle is thus evident and cooperates with the particular angular formation of the blade to provide an efficient means for readily obtaining the angular and shearing cutting action. v

I am aware that razors for the same general purpose as that set forth herein have been projected, but these have in the greater part made use of a razor head set at an angle to the longitudinal axis of the handle, while a few have employed a blade with angularly disposed andarranged cutting edges, but none have provided 3 my particular and advantageous combination of angular blade and square handle, as described herein. With these facts in mind, what is claimed is:

In a razor, the combination of a blade and handle, the said blade tapering from one end to the other and including converging lateral cutting edges, and the handle being square in cross section with one opposite pair of faces adjacent the cutting edges disposed at acute angles there- 1 to and parallel with the longitudinal axis of the blade whereby the remaining faces of the handle act as finger grips disposed in parallelism with the intended line of travel of the razor in use.

RAY W. PAUTLER.

Images