US2045366A - Self-sharpening safety razor - Google Patents

Description

June 23, 1936. T. J. PILLIOD 'ET' AL 2,045,366

SELF SHARPENING SAFETY RAZOR Filed June 20, 1953 2 Sheets-Sheet 1 7 Q l a I \QENTORS ATTORNEY- Patented June 23, 1936 PAT 'i QFFIE 1 2,045,366 SELF-SHARPENING SAFETY RAZOR Thomas J. Pilliod and Ferdinand C. Miiller, Swanton, Ohio, assignors to De Haven Razor Corporation, a corporation of Delaware Application .iune 20, 1933, Serial No. 676,628

11 Claims.

The object of our invention has been to provide a self-sharpening safety razor which is another species of the genus that is the subject of our application for patent executed of even date herewith Ser. No. 676,626, for a self-sharpening safety razor.

While we are illustrating the said species by the best embodiment thereof known to us, our invention is not to be limited to the said embodiment herein shown, but it is to be understood that changes may be made therein, without necessary departure from the principles herein involved.

In the accompanying drawings:

Figs. 1 and 2 are respectively side and rear elevations of a razor embodying our invention.

Figs. 3 and 4 are respectively a plan and a front elevation of the said razor, showing the blade in position.

Fig. 5 is a front elevation of the razor with the blade indicated in dot-and-dash to show the crowned seat for the blade.

Fig, 6 is a plan view of the razor without the blade showing in dot-and-dash lines the position of the combined guard and hone plate at the outer end of the sharpening stroke.

Fig. 7 is a vertical cross-section taken on the line l--'l of Fig. 4.

Figs. 8 and- 9 are respectively a plan and an edge view of the form of our razor blade shown in Figs. 1, 2, 3, 4 and 7 aforesaid; and

Fig. 10 is a view similar to Fig. 6 showing a modified form of our aforesaid razor in which the slots which guide the movement of the combined guard and hone plate are perpendicular to the cutting edge of the razor, which is the subject of the aforesaid application for patent.

Essentially our razor comprises a handle l0 carrying a head ll, said razor having means for so supporting a guard plate l2 having a hone plate Ila secured thereto, that they may be reciprocated transversely to the cutting edge it of the razor blade i i, so as to sharpen the razor edge. In the present instance, the razor blade 14 is formed of a single piece of metal thickenedat the back I7, and hollowed on the sides to give flexibility, cut away on the ends at Hi and Hi to accommodate the side bars of a spring 20. The said thickened rear portion ll of the blade rests in the angle between preferably vertical shoulders I8 and a seat 19 formed on a wall Hid on the head I l, at the foot of said shoulders, which seat preferably slopes downward in a direction toward the cutting edge of the razor. The said seat l9 preferably is curved or crowned as at Him, in

a direction parallel to the cutting edge of the razor blade. The under side of the blade rests on said crowning We of said seat, and it is free to rock on said crowning, to accommodate its cutting edge to the said hone plate, or if no hone plate be used, then to accommodate the said cutting edge to the guard.

The razor blade, in the present instance, is held against the said shoulders l8 and down upon the seat i9, and is also held down upon the hone plate iZa, by a spring 2o, which, in the illustrated embodiment, has trunnions' 2| that are engaged in holes formed in the ends of the blade, and that has a latch section 22 which is adapted to be sprung under a shoulder 23 that is formed on the said head, preferably at a level below the seat I9 and at a point sufficiently to the rear of the trunnions 2! so that forcing the said latch section 22 beneath the said shoulder 23 will pull the said yoke firmly against the said wall l8 and also pull it down upon the seat i9 and furthermore, will yieldingly pull the blade down upon the hone plate. 1

In the present instance the reciprocation of the guard and hone plates l2 and [2a is provided for 25 in the following extremely simple manner: The guard is supported upon the head preferably upon raised slides 25 which surround slots 26 formed in the under portion of plate 27 of the head. Cylindrical pins 28 are secured in the rear por- 30 tion of the guard and mounted in the aforesaid slots. They are also provided with heads 29 which engage. the under surface of the said plate 21. The pins are suificiently smaller in diameter than the width of the slots 26 so that they will not bind in the said slots. This construction therefore affords an extremely simple arrangement for permitting the reciprocation of the com bined guard and hone plate for the purpose of sharpening the blade. The slots may be straight and extend directly forward as shown in Fig. 10 or they may be diagonal in direction as shown in Figs. 5 and 6.

The diagonal direction has the advantage of giving the honing motion, is not only transverse to the razor edge but also has a component of movement lengthwise of the edge of the blade, which tends to remove any burr that may form.

The construction which is the subject of this application provides a self-sharpening razor of high efficiency with very great simplicity.

What we claim is:

1. A safety razor comprising a handle, a head, a plate on said head, a combined guard and hone plate slidably mounted upon said head plate,

said head plate having slots therein, and said guard having pins secured thereto and engaging said slots.

2. A safety razor comprising a handle, a head, a plate on said head, a combined guard and hone plate mounted on said head plate, said head plate' being provided with slots and said guard with pins engaging said slots, whereby reciprocation of said guard and hone plate is permitted and guided.

3. A safety razor comprising a handle, a head, a plate on said head, a combined guard and hone plate slidably mounted on said head plate, said head plate having slots therein, and said hone plate having headed pins secured thereto and engaging said slots.

4. A safety razor comprising a handle, a head, a plate on said head, a combined guard and hone plate mounted on said aforesaid plate, said head plate being provided with slots and said guard with pins engaging said slots, whereby reciprocation of said guard and hone plate is permitted and guided, said slots being diagonal to the edge of the guard.

5. A safety razor comprising a handle, a head, a plate on said head, a combined guard and hone plate slidably mounted on said head plate, said head plate having slots therein, and said hone plate having headed pins secured thereto and engaging said slots, said slots being diagonal to the edge of the guard.

6. A safety razor comprising a handle, a head, a plate on said head, a combined guard and hone plate slidably mounted on said head plate, said head plate having slots therein, and said hone plate having pins secured thereto and engaging said slots, said slots being diagonal to the edge of the guard, and means for supporting a razor blade in contact with said hone plate.

7. A safety razor comprising a handle, a head having a guard thereon, a seat on said head, a blade on said seat and means for yieldingly holding a blade on said seat, said seat being crowned near its middle portion to permit said blade to so adjust itself that its edge shall have a proper relation to said guard the upper surface of said blade being unobstructed.

8. A safety razor comprising a handle, a head,

- a plate on said head, a combined guard and hone plate mounted on said aforesaid plate, said head plate being provided with slots and said guard with pins engaging said slots, whereby reciprocation of said guard and. hone plate is permitted and guided, said slots being diagonal to the edge of the guard, and Wider than said pins.

9. A safety razor comprising a handle, a head, a plate on said head, a combined guard and hone plate slidably mounted on said head plate, said head plate having slots therein, and said hone plate having headed pins secured thereto and engaging said slots, said slots being diagonal to the edge of the guard, and wider than said pins.

10. A safety razor comprising a handle, a head having a guard thereon, a hone on said guard, a seat on said head, said seat being raised at its central portion so that the portion of the blade resting on said seat shall be free to rock on an axis transverse to the guard and hone plate to permit the cutting edge of the blade to adapt itself to the surface of said hone.

11. A safety razor comprising a handle, a head having a guard thereon, a seat on said head, said seat being raised at its central portion so that the portion of the blade resting on said seat shall be free to rock on an axis transverse to the guard to permit the cutting edge of the blade to adapt itself to the surface of the guard the upper surface of said blade being unobstructed.

THOMAS J. PILLI OD. FERDINAND c. MULLER.

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