US1992107A - Safety razor - Google Patents

Description

Feb. 19, 1935. H, E 3 WHEELER 1,992,107

SAFETY RAZOR Filed June 16, 1933 2 Sheets-Sheet l INVENTOR Horatio F.deC.Wheeler ATTORNEY Feb. 19, 1935.

H. F. DE C. WHEELER SAFETY RAZOR Filed June 16, 1933 2 Sheets-Sheet 2 F .17 F .19 F .22 i .h 6 M531 #6 L5? 37 53 INVENTOR ATTORNEY Patented Feb. 19, 1935 a "3Q:UNITEDIASYTATESF PATENT F 'H0ratio Francis de Courcy Wheeler, Greenford, England 3 Claims. (01.30 12) This inventionrelates to that type of safety razoremploying a square blade, with each edge formed as a cutting edge, the transversely curved clamping plate and toothed or other guard being so constructed as to protect two opposite cutting edges when the whole are assembled, and allow of the other two opposite cutting edges of the blade being positioned for use.

,Forthe purpose of my invention, the square bladewith each of its four edges as cutting edges is formed with a large square or approximately square opening at the centre with the surround narrower than the width of the opening, and at the corners or sides'I form recesses, such recesses leading into the opening, or I may form the opening, square or the like and plain i. e. without the recesses at its edge, and by forming the blade with'such: a large opening a better flexing of the blade; when clamped to the plates is obtained without the possibility of the blade cracking.

The clamping plate, formed transversely curved as usual, is oblong in shape with twoopposite sides longer than the side of the blade, and the other two oppositev sides narrowerthan the blade and curved, and at the centre ispositioned the usual screw threaded post, and around the screwthreaded post is positioned four or it may be two projecting pins, arranged to correspond to and engage their respective recesses or the cor ners of the opening in theblade with a slight clearance when applied, or instead of pins I may arrange a recess surrounding the screw post.

The toothed guard plate is formed curved and provided with holes positioned to receive the four or two pins, or a projection for engaging the recess in the clamping plate and the screw threaded stem of the clamping plate and is curved to correspond with the curve of the clamping plate and is of the same width as the clamping plate from two opposite edges, but is provided with teeth or other extensions on'the other two opposite sides which project beyond the two edges of the clamping plate and the curve is between the two toothed edges.

The handle is of the usual internal screw threaded type.

My invention will be more clearly understood from the following description aided by the accompanying drawings in which several examples of carrying the invention into effect are shown.

Figure 1 is a plan, and Figure 2 a section of a square blade 30 having a square opening 31 centrally positioned, the opening 31 having a recess 32 at each corner, such recesses opening into the square 31.

Figure 3 is. a plan and Figure 4 a side view ofa cruved-clamping' plate 33 having a screw threaded stem 34 centrally-positioned and four projecting pins 35, these being positioned onthe r clamping plate 33 to correspond to the recesses 32 in the blade; l Figure 5 is a plan andFigure 6 a section of a curved guard plate 36 which is preferably oblog and is provided withacentral hole 37 and four other holes 38, the hole 37 being arranged centrally to correspond with the screw stem 34 and the holes138' to correspond with the pins 35 and the-teeth 39 along two opposite edges are as usual.

. Figure '7 is an elevation of the parts shown in Figures 1 to 6 with the handle 40 or the usual construction, and having an internal screw thread 40a-for connection to the stem 34, all the parts are shown detached, but at Figure v8 part sectional elevation, Figure 9 a top plan, part broken away, and Figure 10 an under plan of the blade clamping. plate, toothed guard plate and handle are positioned together for use as a razor.

Figure 11 is a, plan, and Figure 12 a section of a square blade'30 in w hich the square opening 31 isprovided with recesses 32 in the end walls thereof, instead of at the corners.

Figure 13 is a plan and Figure 14 a section of a curved clamping plate 33 having the central screw threaded stem 34 and two holes 42 in line with the stem 34 and corresponding in position with either two of the recesses 32 in the blade 30.

Figure 15 is a plan and Figure 16 a section of a toothed guard plate 36 having the centrally positioned hole 37 and two projecting pins 43 in line with the hole 37, and corresponding in position with the two holes in the clamping plate 33.

Figure 17 is an elevation partly in section of the parts shown in Figures 11 to 16 in position with the handle 40 as a razor.

Figure 18 is a plan of Figure 17 with a part of the clamping plate broken away.

In this construction either pair of recesses 32, are in alignment with the center of the opening in the blade and are positioned over the two pins 43 on the guard plate 36 according to which two edges of the blade required to be used, the clamping plate 33 is then positioned, the stem 34 passing through the holes 41 and 37 and the holes 42 in the clamping plate engaged with the pins 43 on the guard plate 36, and the handle screwed on to the stem 34 to hold the blade 30 firmly and flexed between the clamping plate and guard plate.

Figure 19 is a plan and Figure 20 is a section of a blade having a square opening 31 without holes being formed at the corners as in Figure l, or sides as at Figure 11.

Figure 21 is a plan and Figure 22 a section of a clamping plate 33 having a square recess 44 corresponding to the square hole 31 in the blade 30 and centrally positioned is the screw stem 34. Figure 23 is an under plan, and Figure 24 a section of a guard plate 36 provided with a square projecting portion 45 corresponding to the hole 31 in the blade 30, and Figure 25 is a top plan and Figure 26 a side view of the guard plate shown in Figures 23 and 24.

Figure 27 is a side view of a complete razor partly in section containing the elements shown in Figures 21 to 26 and Figure 28 is a plan,

partly broken away, of Figure 27.

In these figures, the hole 31 in the blade and recess 44 in the clamping plate 33 and projection 45 in the toothed guard plate 36 correspond in size, and when the handle 40 is connected to the stem 34 with the blade 30 and clamping plate 33, the projection 45 passes through the hole 31 in the blade 30 and into the recess 44 in the clamping plate 33, and firmly holds and flexes the blade 30 between them.

In all cases the blade 30 is held curved between the clamping plate 33 and the toothed guard 36 which are shaped accordingly and the holes or openings in the plate and the means on the clamping device are so constructed that either of two opposite edges of the blade are only exposed for shaving purposes whilst the other two are protected, and either of two opposite cutting edges of the blade can be used for shaving.

It is preferred that the corners of the blade 30 be rounded or squared ofi, so that they can be more easily handled by catching hold of them at the corners, and in the drawings Ihave shown them squared off as at 46, and to produce a further safeguard I form a head or guard lug47 at each corner of the toothed guard plate to engage or enclose these corners when in use.

What I do claim as my invention and desire to obtain by Letters Patent is:-

1. A safety razor having a normally flat blade provided with four cutting edges equal in length and a relatively large central opening whose marginal walls are parallel with adjacent cutting edges defining the solid portions of the blade materially narrower throughout than the width of the opening, a guard member having a surface convex in one direction engaged by the blade, a clamping plate member disposed over the blade having a blade-engaging surface curved reverse to the first mentioned surface to flex the blade 2. A safety razor according to claim 1 where-' in said plate member has one major dimension longer than the other whereby in usethe plate member covers the two cutting edges of the blade which are arcuate while exposing the remaining cutting edges thereof.

3. A safety razor having a normally flat blade provided with cutting edges each equal in length defining a geometrical figure, said blade having a relatively large central opening whose marginal walls are parallel with adjacent cutting edges defining the solid portions 01 the bladematetially narrower throughout than the width of the opening, the marginal edges of said opening having equidistant notches thereon, said blade being cut away across each corner, a guard member having a surface convex in one direction engaged by the blade, a clampingplate member disposed'over the blade having a blade-engaging surface curved reverse to the first mentioned suriace'to flex the blade into arcuate form in use, said clamping plate being cut away across each corner, guard lugs on the guard member at each corner adjacent the cut away portions of the blade and clamping plate, blade-positioning means on one of the members passing through said opening and notches and interfitted in the other member and normally preventing relative turning movement V of the members and blade, a handle, and means of clamping connection between the handle and clamping plate member. V

I-IORATIO FRANCIS n: QOURCY WHEELER.

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