US996617A - Safety-razor. - Google Patents

Description

L. H. COBB.

SAFETY RAZOR APPLICATION FILED SEPT. 24, 1906.

Patented July 4, 1911.

2 SHEETS-SHEET 1.

lnuerfior Lgman H. Cams.

Wdnesses .L. H. COBB.

SAFETY RAZOR.

APPLICATION FILED SEPT. 24, 1906.

Patented. July 4, 1911.

2 SHEETS-SHEET 2.

Invenior Lyman H. Babb W111 messes v UNrrED STATES PATENT OFFICE.

LYMAN H. COBB, 0F FITCHBURG, MASSACHUSETTS, ASSIGNOR T0 MARY ELIZABETH J'OHN SON, TRUSTEE, 0F FITCHBURG, MASSACHUSETT SAFETYFRAZOR.

To all whom it may concern:

Be it knownthat I, LYMAN H. COBB, a citizen of the. United States, residing at Fitchburg, in the county of \Voroester and Commonwealth of Massachusetts, have invented a new and useful Improvement in Safetyltazors, of which the following is a specification, accompanied by drawings forming a part of the same, in which Figure 1 represents in perspective View a safety razor embodying my invention. Fig. 2 is a side view of the head of the razor. Fig. 3 is a central transverse sectional view of the head of the razor. Fig. 4 is a top view. Fig. a top view with the upper clamping plate removed. Fig. 6 is a central longitudinal sectional view through the head of the razor. Fig. 7 IS an enlarged top view of one of the guard teeth. Fig. 8 IS a side view of the same. Fig. 9 is a sectional view' on the line 9 9,- Fig.' 7. Figs. 10 and. 11 show the head of the razor rotated on the handle with its longitudinal axis at an oblique angle to the handle. Fig. 12 shows the head of the razor rotated into a position opposite that shown in Fig. 1.

Similar reference letters and fingers refer to similar parts in the different views.

My present. invention relates to certain improvements in that class of razors known as safety razors in which a cutting blade is securely clamped between clamping plates contained in the head of the razor, and the edge of the cutting blade is protected by the guard teeth, and my invention consists in the construction and arrangement of the parts as hereinafter described and pointed out in the annexed claims. 8

Referring to the accompanying drawings, 1 denotes the handle, and 2 the head of my improved safety razor, said head comprising clamping plates 3 and 4 between which is clamped a cutting blade The clamping plate 4 is provided on one edge With a series of teeth 6, over the curved upper surface of which the cutting edge 7 of the blade 5 slightly projects in the usual manner in instruments of this class. The clamping plate 4 is attached to the end of the handle 1 by means of a screw 8 and a circular washer 9. The end of the handle 1 is cut away on diametrically opposite sides as shown atv 10, Fig. 6, and enters a correspondingly shapedhole in the washer 9, in order Specification of Letters Patent.

Application filed September 24, 1906.

Patented Juy 4, 1911.

Serial No. 335,867 E to prevent the washer 9 from turning on the end of the handle.

Journaled on the handle 1, between the plate 1 and an annular shoulder 11 of the handle, is a rotatable screw threaded sleeve 12, having a knurled flange 13 by which the sleeve may be turned by the operator. The screw threaded sleeve 12 enters a screw threaded hole 11 in the flange 15 which is a thereby releasing the "cutting blade 5, and

by lowering the flange 15 of plate 3 the cutting blade 5 is securely clamped between the two plates. v Lugs 18 at opposite ends of the plate 3 and integral therewith, are turned downwardly and engage corresponding notches 19 in the bpposite ends of the plate 1. The lugs. 18, 18 serve to guide the movements of the plates as they approach and recede from each other and also act as stops to limit the longitudinal movement of the cutting blade 5 as it clamped between the plates 3 and 4. The flange 15 and plates 3 and 4 are free to rotate 011 the end of the handle while the washer '9 is held from rotating by the handle, and the washer is' provided with equi-distant notches 20, preferably four in number, and thesenotches are successively engaged by the bent section '21 of the blade spring 22 attached by screws 23 to the real-edge of the plate 3. The notches 20 are so arranged on the periphery of the washer 9 that when they are engaged by the blade spring 22 the head would be maintained on the end of the'handle in either one of the four positions as shown in Figs. 1, 10, 11 and 12, as maybe most desirable for the application of the cutting blade to the face. If desired, the number of notches in the periphery of the washer 9 may be increased, and the number of positions in which the cutting blade may be held relatively to the handle correspondingly multiplied.

The guard teeth 6 which project from one broad to provide suitable bearing surfaces 25 to rest against theskin and in order to prevent the beard from being pressed down out of the way of the cutting edge ofthe blade by the width of the teeth, I cut away portions of the teeth on opposite sides as at 26, 26 in order to reduce the width of the bearing surfaceof the teeth at point 27 or dire'ctly in front of the .cutting edge of the blade, thereby enabling the beard which may have been pressed down by the broad tip of the teeth to rise and be suitably presented to the cutting edge of the blade.

Figs. 1, 10, 11 and 12 represent four different positions of the head of the razor relatively to the handle, in which position the head is locked by the engagement of the blade spring 22 with one of the notches 20 in the circular disk 9. These changesin position greatly facilitate manipulation when the razor is changed from one hand to the other, or from one side of the face to the other, or when the razor is held by one person in the operation of shaving another.- While the stilfness of the blade spring 22.is suflicient to securely hold the head of the razor in any desired position, it allows the immediate and rapid change of the head from one position to another, as may be desired in the operation of shaving.

I claim,

1. In a safety razor, a clamping plate bent upon itself to'form a flange parallel with said plate and having a screw threaded opening, a handle passing through said flange and provided with a shoulder, asecond clamping plate attached to the end of said handle, and a screw threaded rotatable sleeve journaled on said handle and held from longitudinal movement between said second clamping plate and said shoulder,

threaded opening in said flange.

2. In a safety razor, the combination with a handle and a pair of clamping plates for holding a razor blade held in parallel planes at the end of the handle, and arotatable screw threaded sleeve journaled on the end of said handle and held from longitudinal movement and operatively connected with one of said clamping plates, whereby it is moved toward or away from the other clampingplate by the rotation of said sleeve.

3. In a safety razor, the combination with a handle and a clamping plate attached to one end of said handle, of a second movable clamping plate outside said attached clamping plate, and having a flange extending around. one edge of said attached clamping plate and embracing said handle, and a screw threaded sleeve engaging said flange and rotatable on said handle, whereby said movable clamping plate is drawn toward said attached clamping plates.

4. In a safety razor, the combination with a'handle, of a circular washer non-rotatably attached to the end of said handle, and provided with a series of peripheral notches, a head comprising means for holding a razor blade and rotatable about the end of said handle, and means carried by said head for engaging the notches in said washer.

5. In a safety razor, the combination with a handle and a rotatable head for holding a razor blade, of a washer non-rotatably held on the end of said handle, and a blade spring carried by said head .and engaging said washer, whereby said head is locked in position. Dated-this nineteenth day of September 1906.

LYMAN H. COBB.

lVitnesses C. A. BATCHELDER, BLANCHE L. SMITH.

with its screw threads engaging the screw

Images