US2044698A

US2044698A - Safety razor

Info

Publication number: US2044698A
Application number: US619571A
Authority: US
Inventors: John Robert
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-06-27
Filing date: 1932-06-27
Publication date: 1936-06-16
Anticipated expiration: 1953-06-16

Description

R. JOHN SAFETY RAZOR June 16,1936.

Fild June 27, 1932 3 PW (114m 06072 John Patented June 16, 1 936 I T t r UNITED STATES PATENT OFFICE SAFETY RAZOR Robert John, New York, N. Y. Application June 27, 1932, Serial No. 619,571

19.0laims. (01. 30- 50) This invention relates v to safety razors and pins i for registering the clamp with the guard. particularly to blades usedtherein of the type The structure thus far described corresponds to a where a thin flexible steel provided with two conventional razor now in popular use. cutting edges is employed. The numeral 8 is a razor blade constituting my An object of the invention is to provide a blade invention having oppositely disposed cutting adapted to fit any conventional razor whichmay edges 9 and I and provided with side wings H be employed either singly or in pairs at the option and I2 which project laterally from the ends of of the user. the clamp and guard, as shown in the dotted The invention represents an improvement upon line I3. This blade may have a longitudinal lo the broad idea of providing a'plurality of safety recess l4. Adjacent one of the cutting edges 19 razor blades to present a plurality of cutting only of the blade is a narrow elevated strucedges during each stroke of the razor. The adture running lengthwise of the blade as indicated vantages and theory underlying the mode of operby reference numeral l5. This elevated strucation of this broad idea is clearly set forth in ture may consist of a narrow strip of material United StatesPatent No. 1,024,509, dated April such as celluloid or metal foil, cemented to the 15 30, 1912. blade, or it may be formed by punching a de- In the patent aforesaid and others existing in pression upon the opposite side of the blade before the domestic and foreign arts, however, the pairs hardening an grinding, or i may be a sin of blades employed separator plates or spaces straight line elevation. Again it may consist of 20 which I have discovered as highly objectionable, a broken line comprising elevated dots in a 20 and the present invention contemplates, among straight row. The height of the elevation is other things, a structure wherein no separator governed by the amount of spacing desired beplates are employed between the clamping portween the two cutting edges; I find that an elevations of the razor parts. tion of from five to ten thousandths of an inch A further object of the invention is to provide gives a satisfactory paration between the two 25 means for separating the cutting edges of the cutting edges for average use although this may pairs of blades so that varying cutting angles are be materially increased or decreased for special produced. purposes. A further object of the invention is to provide When it is desired to use myblade in single means for securing accurate registration of the form in the conventional way, it is merely placed 30 pairs of blades so that the mere act of tightening in the usual holder with the projection disposed them in the holder insures that the cutting edges downwardly, whereupon the cutting edges assume are parallel'and that each of the blades is exthe exact position which they would assume in actly centered with respect to the other. the case of the regular blade minus the projec 5 Other and subordinate characteristics of my tion. If, however, it is desired, to secure the invention will be apparent to those skilled in the advantages of my invention, to use the blades in art from a reading of the following specification pairs, all that is necessary to do is to place the in conjunction with the drawing attached blades together in such a position that the prohereto and forming a part hereof in which: jection of one blade is near one edge of the pair 40 Fig. 1 is a side elevation of the razor with a pair while the projection of the other blade is near the 40 of blades positioned therein before the clamp has other edge of the pair. The pair is then simply been drawn down in a manner to fiex the blades; inserted in the regular holder which, when Fig. 2 is a similar view showing the razor in tightened, tends to force the cutting edges of the operative condition; lower blade downwardly, apart from those of the Fig. 3 is a top view of one of the blades conupper blade. The projections, being close to the 45 stituting my invention; cutting edges, are spaced outwardly of the under- Fig. 4 is a sectional view thereof; and clamping surface, with the result that, when used Fig. 5 is a view showing in dotted lines the dissingly or in pairs, the standard clamping device of position of a cooperating blade when pairs of the razor lies inside the'projection or projections,- blades are employed. whereby the clamping operation is in nowise 50 Now, referring more specifically to the inveninterfered with. This is clearly shown in Fig. 2 tion, I indicates a razor of any desired form of the drawing. When using the blades in pairs having a guard 3 provided with a channel 4 and it is imperative that the cutting edges be pera. clamping portion 5. The numeral 6 represents fectly aligned in parallel; otherwise, the advan- 65 the usual curved upper clamp having suitable tages of the double cutting edge are nullified and the cutting characteristics of the razor are disadvantageously altered. In order to provide exact, automatic registration of my blades when used in pairs, I provide four punched-up projections on the wing portions of each blade which project laterally from the holder and are thus outside the clamping mechanism. These projections may conveniently take the form of conical bosses of about ten thousandths of an inch in height, projecting on one side and indented on the other, two of said bosses nearest one cutting edge of the blade being disposed upwardly, as indicated at 56, while the other two nearest the other cuttingedge are disposed downwardly, as indicated at IT. Said bosses, being outside of the clamping mechanism of the razor holder, perform no function and present no interference when the blade is used singly. However, when the blades are used in pairs and their projection sides or wings are brought face to face, it will be seen that the upward conical formation of one blade fits into the downward conical formation of the other blade, as indicated in Fig. 5 at [8 and i9 respectively, and vice versa, and because of the conical structure, the mere act of tightening the clamp centers and aligns the blades with relation to each other.

From an examination of the drawing, it will be seen that my new blade, when used in pairs, presents certain advantages over ordinary blades used with separators, to-wit: (1) The upper blade is closer to the guard than is possible when separators are used since the space between the clamps is represented by two razor blades, whereas, when a separator is. used, the space between the clamps is represented by the thickness of the blades plus the thickness of the separator. Throwing the upper blade outward even by the space of a thin separator may place it in a posi tion where it is so far out of its alignment with its original design that the smoothness of its cutting function may be interfered with. By eliminating the separator, the present invention minimizes this difficulty and, in fact, brings the upper blade to a position frequently employed when close, smooth shaving is desired; and (2) The lower blade, being bent downward outside the clamping device, presents a slightly different cutting angle than the upper blade instead of possessing the same angle, which it gives when a separator is used, said separate angles of the two cutting edges providing smoother and more eifective shaving at a single stroke than when the cutting edges are at the same angle.

What I claim is:

l. A safety razor comprising a clamping mechanism, a pair of blades secured therein in face to face relationship, and means for separating the adjacent cutting edges of said blades when the clamping mechanism is actuated to clamp the blades so as to impart variant cutting angles to said blades.

2. A safety razor of the class described including clamping mechanism, a pair of blades secured within said clamping mechanism in face to face relationship, and means for automatically separating the adjacent cutting edges of said blades during the tightening adjustment of said clamping mechanism.

3. A safety razor of the class described comprising a. clamping mechanism, a pair of blades secured thereby and means provided on said blades for separating the adjacent cutting edges upon tightening adjustment of the clamping mechanism.

4. A safety razor mechanism of the class described comprising a guard and a clamp, said guard being provided with a longitudinal channel, a pair of thin flexible safety razor blades disposed between the guard and clamp, means disposed between the blades outside the clamping area of the guard for separating the eges of the blades.

5. A safety razor of the class described comprising a guard and an upper clamp, said guard being provided with a longitudinal channel, a pair of safety razor blades positioned in face to face relationship disposed between the guard and clamp with portions of the blades contacting, means for separating the cutting edges of the blades, said means being adapted, upon the adjustment of the clamp, to cause the cutting edge of the lower blade to project downwardly into said channel whereby to provide cutting edges of said pair of blades of different angles.

6. A safety razor of the character described comprising a guard and a clamp, means for adjusting the relative positions of the guard and clamp, said guard having a longitudinally extending channel, a pair of blades disposed between the guard and clamp with portions of the blades contacting, the under surface of said clamp being uniformly curved, means for separating the cutting edges of said pair of blades,

. said means being disposed'above said channel portion of the guard whereby, upon adjustment of the clamp, relative to the guard the lower blade is caused to be flexed downwardly to produce a cutting angle greater than that of the upper blade disposed directly beneath said clamp.

7. A safety razor of the class described comprising a clamping mechanism, a pair of blades disposed within said clamping mechanism and 'mterfitting means carried by the blades for maintaining their edges in parallel position upon actuation of the clamping mechanism.

8. A safety razor of the character described comprising a clamping mechanism, a pair of flexible blades mounted within said clamping mechanism, means for adjusting said clamping mechanism to flex the blades, and interfitting means carried by said blades to maintain their edges in parallel position when the adjusting mechanism is actuated.

9. A safety razor of the character described comprising clamping mechanism, a pair of blades disposed in contact with each other within said clamping mechanism and adapted to be flexed thereby, interacting means between the pair of 'blades for preventing relative movement thereof during said flexing movement.

10. A safety razor of the character described comprising clamping mechanism, a pair of blades disposed in contacting face to face relationship, within said clamping mechanism, an intervening separator having means for separating the cutting edges only of said blades and interacting means between the pair of blades for preventing relative movement of the blades when the clamping mechanism is actuated.

11. A safety razor of the character described comprising a razor blade having opposite longitudinally disposed cutting edges, an elevated portion provided closely adjacent one of the cutting edges only of said blade, a similar complemental razor blade superimposed directly thereon in such a position that the respective elevated portions of the blades cause separation of the opposite cutting edges thereof, and interfitting means between the blades for causing automatic registration thereof when adjusted within the clamping mechanism of a razor.

12. A safety razor blade of the character de- 5 scribed made of thin flexible metal, an elevated structure disposed longitudinally and in close proximity to one of the cutting edges only of said blade, laterally projecting portions provided by the blade normally disposed beyond the clamping area of the clamping mechanism of a razor,

the elevated portion provided by the other blade adapted to separate the cutting edges along the adjacent sides of the blade, the oppositely disposed bosses of one blade being adapted to interflt with the similar bosses of the other to secure registration of the blades when positioned within the clamping mechanism.

13. A safety razor of the character described comprising a guard and a clamp, a pair of contacting razor blades disposed between said guard and'clamp, the opposing surfaces of said guard and clamp being formed to cause the two blades to. assume a curved position when clamped and means to maintain the blade positioned adjacent said guard in a position of greater curvature than the outer blade.

14. A safety razor of'the class described comprising a clamping mechanism, a pair of flexible blades positioned therein, and means provided on said blades for flexing the blades and causing the edges thereof to assume variant angles upon actuation of the clamping mechanism.

15. A safety razor comprising a clamping mechanism, a pair of blades secured therein in face to face relationship, and means provided on said blades for imparting variant angles to the cutting edges of said blades when the clamping mechanism is tightened. 45 16. A safety razor comprising a clamping mechanism, a pair of blades secured therein in face to face relationship, means carried by said blades for imparting variant angles to the cutting edges of said blades when the clamping mechanism is actuated, and separate interacting 6 means carried by said blades for maintaining the cutting edges in parallel position.

17. A safety razor oi the cla's's described comprising a.- clamping mechanism, a pair of blades secured thereby, each blade being provided with 10 means for separating the adjacent cutting edges upon the tightening adjustment of said clamping mechanism.

18. A safety razor blade having a cutting edge along each side, an elevated structure disposed 15 longitudinally and in close proximity to one cutting edge only, said blade being adapted to be employed in a clamping mechanism with a complemental blade having a similar formation whereby, when the clamping mechanism is tightened, the elevated portion of one blade iscaused to separate the cutting edges along one side of the pair of blades and the elevated portion provided on the other blade is caused to separate the cutting edges along the opposite side of the 25 blades.

19. A safety razor blade having a cutting edge along each side, an elevated structure disposed longitudinally and in close proximity to one cutting edge only, and bosses provided on the blade, 30 said blade being' adapted to be employed in a clamping mechanism with a complemental blade having similar formations whereby, when the clamping mechanism is tightened, the elevated portion of one blade causes the cutting edges along one side of the pair of blades to assume variant angles and the elevated portion provided on the other blade causes the cutting edges along the opposite side of the blades to assume variant angles, the bosses of one blade being adapted to interfit with the similar bosses of the other blade to maintain the adjacent cutting edges of the blades in parallel position.

nonna'r sons; 4