US2010446A

US2010446A - Safety razor

Info

Publication number: US2010446A
Application number: US733478A
Authority: US
Inventors: Charles H Stuart
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-07-02
Filing date: 1934-07-02
Publication date: 1935-08-06
Anticipated expiration: 1952-08-06

Description

C. H. STUART SAFETY RAZOR Aug. 6, 1935.

Filed July 2. 1934 INVENTOR. M 4, W

ATTORNE Patented Aug. 6, 1935 PATENT OFFICE RAZOR Charles H. Stuart, Newark, N. Y.

Application July 2, 1934, Serial No. 733,478 6 Claims. (01. 30-12) I My invention relates more particularly to safety razors having a thin blade pressed between a toothed guard and cover plate and has for its object to provide a method by which soap or lather may be washed out from between the blade and guard without the necessity of unscrewing or otherwise disassembling the razoror removing the blade, as has been hitherto generally necessary. The present invention is an improvement upon the invention for which United States Patent No. 1,852,708 has already been granted me. In the invention of the said patent a stream of water was introduced through the hollow handle of the razor and directed thence between the blade and guard for the purpose specified. I have found, however, that if the water is too hot for comfort it may be inconvenient to hold the razor so as to direct the water through the handle. The present invention has for its object to obviate this difficulty by providing a port at one end of the razor guard through which water may be introduced to perform substantially the same function as before without heating the handle. I accomplish this object by means which will be understood by reference to the drawing, in

which:

Fig. 1 is a plan view of the razor showing the cover plate, edge of the blade and guard, drawn to an enlarged scale,

Fig. 2 is a side elevation of the same,

Fig. 3 is an end elevation of the closed end of the razor looking toward the right side of Fig. 2,

Fig. 4 is an end elevation of the open or ported end of the razor, looking toward the left side of Fig. 2,

Fig. 5 is a cross section taken along the line H of Fig. 1,

Fig. 6 is a cross section along the line bb of Fig. 2,

Fig. '7 is a plan view of the toothed guard, the blade and cover plate having been removed.

Referring to the figures:

I is the blade, 2 the guard and 3 the cover plate. 4 is the handle. In the embodiment illustrated, the blade is of the double edged, flexible type, normally flat, but adapted by virtue of its flexibility to be pressed into a curved form between the correspondingly curved guard and cover plate, as illustrated, particularly in Fig. 3. In a well known type of razor it is necessary, after using, to unscrew the handle, remove the cover plate and blade and wash the latter, during which operation, owing to the double edge, there is always a risk of cutting the fingers; moreover,

the operation requires appreciable time. My invention obviates this risk and saves time by making it possible to wash out the soap without disassembling the razor.

For this purpose I provide a port 5 by cutting away the guard 2 at one end, as will be clearly seen by comparing Figs. 3 and 4. The port 5 communicates with the hollow interior 6 of guard 2. The guard 2 is serrated at its sides to form teeth I. When screwing down cover 3 upon blade l, the cover presses the blade along its two edges 10 8, 8 and the guard presses the blade along its median. line 9. At each end of each row of teeth 7 are teeth I 0, which in the figures are shown as slightly wider than teeth 1. The teeth I are cut away as shown by the dotted lines in Fig. 4 and full lines in Fig. 5 to form clearances II between guard and blade, but teeth I I2 arenot so cut away. The cover plate 3 is provided with taper pins I2, I2 and a threaded shank IS, which are adapted to pass through corresponding holes in blade I and guard 2 thus fixing the position of coverplate 3 and blade I relative to guard 2, as illustrated in the figures. Holes I l and I5 pass through the hollow interior of guard 2. Hole I4 is provided with a boss I6, theupper end surface of which conforms to the curved contour of the guard, as will be clearly seen in Fig. 4. The hole I1 is formed in the surface of this contour and the teeth I 0 likewise conform to the same contour. When cover plate 3 is screwed down on blade I by screwing the handle 4 on shank I3, pins I2 enter holes I4 and I1,

edges

8, 8 press one side of blade I and boss I I5 and the corresponding metal surrounding hole I"! press the other side of the blade. When cover plate 3 has been screwed all the way down the edges of blade I are brought into contact with teeth In and lugs I8, which are left for the purpose when clearances II are cut through teeth I.

After use, the soap or lather is washed out of the razor without even loosening the handle 4 by merely holding the razor under a stream of water so as to direct the water into port 5. From port 5 the water passes through hollow interior 6 to clearances II, where the soap is principally accumulated. The soap is thus quickly washed away. The path of the water through port 5, hollow interior 6 and clearances II is clearly indicated by the arrows in Figs. 4, 5, 6 and 7.

Although the razor illustrated is of the double 50 edged, screw clamped type, it will be obvious that my invention is applicable to razors of the single edged type in which the cover plate is hinged at one side. In razors of the latter type it is comparatively easy to disengage the blade; neverthe- 55 less there is always a danger of cutting the fingers when washing safety razor blades and it is highly desirable to be able to wash the blades without handling them.

What I claim is:

1. In a safety razor, the combination of a blade having a cutting edge, a guard member carrying a guard therefor, a clearance between said cutting edge and said guard, a passage in said guard member communicating along a side with said clearance, said passage open at one end, and defleeting means at the other end of said passage, whereby water introduced through the open end of said passage is forcibly deflected laterally through said clearance to wash off shaving lather from said cutting edge.

2. In a safety razor, the combination of a blade having cutting edges along opposite sides, a guard member carrying guards therefor, clearances between said cutting edges and said guards, a passage in said guard member communicating along its sides with said clearances, said passage open at one end, and deflecting means at the other end of said passage, whereby water introduced through the open end of said passage is forcibly deflected laterally through said clearances to Wash oif shaving lather from said cutting edges.

3. In a safety razor, the combination of a blade having a cutting edge, a guard member carrying a guard therefor, stops on said guard member defining a clearance between said cutting edge and said guard, a cover member adapted to clamp said blade against said stops, a passage in said guard member communicating along a side with said clearance, said passage open at one end, and deflecting means at the other end of saidv passage, whereby water introduced through the open end of said passage is forcibly deflected laterally through said clearance to wash off shaving lather from said cutting edge.

l. In a safety razor, a flexible blade having cutting edges along opposite sides, a curved guard member carrying guards therefor, a cover member adapted to press said blade against said guard and flex it to conform to the curvature thereof,

stops defining clearances between said cutting edges and said guards when said blade is pressed tightly against said guard member, a passage in said guard member paralleling said cutting edges and communicating along its sides with said clearances, said passage open at one end, and deflecting means at the other end of said passage, whereby water introduced through the open end of said passage is forcibly deflected through said clearances to wash off shaving lather from said cutting edges.

5. In a safety razor, the combination of a blade having a cutting edge, a guard member carrying a guard therefor, said guard cut away from near one end of said cutting edge to near the other end of said cutting edge to form a narrow clearance closed at its extremities between said cutting edge and said guard, a passage in said guard member communicating along a side with said clearance, said passage open at one end, and closure means at the other end of said passage adapted to deflect through said clearance water introduced through the open end of said passage, whereby shaving lather is washed off from said cutting edge.

6. A safety razor comprising a hollow rectangular guard member, a cover member, a blade hav ing a straight cutting edge extending along one side of said guard member, means for clamping said, blade between said guard member and said cover member, said guard member carrying a guard for said cutting edge, a narrow elongated clearance between said guard and said cutting edge, an opening through one end wall of said guard member communicating through the hollow interior thereof with said clearance and a handle attached to said guard member, whereby water introduced through said opening in a direction generally parallel to said cutting edge impinges against the opposite end wall of said guard member and is thereby deflected through said clearance in a direction generally transverse to said cutting edge to wash ofi shaving soap from said cutting edge.

CHARLES H. STUART.