US890406A - Safety-razor. - Google Patents

Description

PATENTED JUNE 9, 1908.

L. H. COBB. SAFETY RAZOR. APPLICATION FILED 001 .5, 1906.

1 L man By g t %orneg ,tion, accompanied by part of the same,

. UNITED STATES PATENT OFFICE.

LYMAN H. COBB, OF FITGHBURG, MASSACHUSETTS, ASSIGNOR TO MARY ELIZABETH JOHN- SON, TRUSTEE, OF FITCHBURG, MASSACHUSETTS.

SAFETY -RAZOR.

Specification of Letters Patent.

Patented June 9, 1908.

Application filed October 5, '1906. Serial No. 337,528.

To all whom it may concern:

Be it known that I, LYMAN H. COBB, a citizen of the United States, residing at Fitchburg, in the county of Worcester and Commonwealth of Massachusetts, have invented a new and useful Im rovement in a Safety- Razor, of which the ollowing is a specificadrawlngs forming a in which Figures 1 and 2 represent front and side views respectively of a safety razor embodying my invention. Fig. .3 is a side elevation of the same with the head shown in central sectional view. Fig. 4 is a side view of the razor with the clamping plate raised to release the cutting blade. Fig. 5 is a sectional view through the head of the razor on line 55, Fig. 1. Fig. 6 is a top view of the razor head with the clamping plate removed, on line 66, Fig. 2, in order to disclose the cutting blade, and Fig. 7 is a perspective view of the end of the handle upon which therazor head is su ported.

Similar reference etters and figures refer to similar parts in the different views.

My present inventipn relates to an im proved means of holding the cutting blade in asafety razor by which the cuttingblade may be instantaneously released, and I accomplish this result by the construction and arrangement of parts as hereinafter described and claims.

Referring to the accom anying drawings 1 denotes the handle of t e razor, having a necl; 2 which is preferably provided with a rearward bend at 3 and a reverse or forward bend at 4, in order to bring the cutting blade 5 at an oblique angle to the axis of the handle, and with the cutting blade in a position in which the axis of the pass through the cutting blade at a point between 1ts exposed cutting edge 6 and the end of the handle, as represented in Fig. 3, in which the broken line acoc is drawn coincident with the axis of the handle.

The end of the handle is cut away on opposite sides as shown in' perspective view in Flg. 7, forming prongs 7, 7, and shoulders 8, 8, to recelve a bed plate'9 which is held in pointed out in the annexed position by a screw 10 entering a screw hole 11 in the end ofthe handle. The bed plate I 9 forms a support for the cutting blade 5 and is provided with upturned prongs 12, 12,

handle extended will opposite ends of the cutting blade 5 in order to position the cutting blade, and bring its exposed cutting edge 6 in registration with a row of beveled guard teeth 14 formed on the front edge of the bed plate 9. The cutting blade 5 is provided at its ends with the rounded wing pieces 15 which project beyond the ends of the bed plate 9 to enable the cutting blade to be seized at its ends between the thumb and finger of the operator to facilitate its insertion and removal from the head of the razor. The cutting blade 5 is securely held in position by means of a clamping plate 16 which rests upon the top of the cutting blade 5 and is bent downward at 17 over the rear ed e of the bed plate 9 and again forward ara lel with the clamping plate 16 to form a ug 18 inclosing the cylindrical end 19 of the handle and adapted to slide thereon. Inserted between the lug 18 and bed plate 9 is a spiral spring 20, with its tension applied against the lug 18 to separate it from the bed late 9 and draw the clamping plate 16 firm y against the cutting lade 5.

In Fig. 4 I have shown a modified form of the bent clamping plate 16 which consists in bending the plate at right angles at 21 and extending it ast the rear edge of the bed plate 9, and t en bending it outwardly at 22 in order to secure a broader bearing surface against the under side of the lug 18 to receive the pressure of the thumb in the operation of raising the clamping plate to release the cutting blade. The cutting blade is released by holding the azor in the position shown in Fig. 4, with the tip 23 of the thumb pressing against the under side of the lug 18, and with the fore fin er 24 bent around the rearward bend 3 of t e handle. This position of the razor in the hand allows a pressure to be exerted by the tip of the thumb, which is resisted by the embrace of the fore finger around the rearwardly bent section 3 of the handle, the thumb exerting a pushing, and the fore finger a pulling strain, resulting in the compression of the spiral spring 20 and the separation of the clamping plate 16 from the bed plate 9, as shown in Fig. 4, sufficiently to form a space 25 between the clamping plate and prongs cutting lade to be removed.

In order to insert a cutting blade it is held by the win s 15 between the tip of the thumb and fore finger and inserted through the 12 to allow the which may be brought space 25 between the clamping plate 16 and t proper re istration with the guard teeth 14.

The spiral spring 20 is then lowed to draw the clamping plate firmly against the cutting blade holding it securely in position on the bed plate 9. The cutting blade 5 is provided with a cutting edge 6 on-one of its longitudinal sides which is slightly shorter than the length of the bed plate 9, in order to prevent the sharpened edge of the cutting blade from projecting beyond the outermost guard teeth 143. As the opposite edges 6 and 26 are duplicates of each other, the edge 26 may be sharpened forming a cutting blade with two cutting edges, either of into use by reversing the blade end for end.

I claim,

1. In a safety razor, thecombination .with

' a'handle, of a bed plate for supporting a cutting blade, a clamping plate for holding the cutting blade a ainst the bed plate, said clamping plate being provided with a lug parallel with said bed plate, and a spring between said lug and said bed plate.

2. The combination in a safety razor, of a handle, a head supported on one end of said handle, and comprising a spring actuated clamping late, and a bed plate for holding a cutting p ate, said handle having a curved section between the body portion of the handle and the head.

3. The combination in a safety razor, of a handle, a bed plate attached to one end of said handle for supporting a cutting blade, said handle having a curved section adjacent to said head, whereby said head is held at an oblique angle to the axis of said handle, and with the axis of said handle extended passing through said head between the cutting edge of the blade and the end of the handle.

4. The combination, in a safety razor, of a handle, a bed plate attached to the end of said handle, a clamping plate, bent over one edge of said bed plate and having a lug parallel with said bed plate, and a s ira spring between said lug and said bed p ate,

with its tension applied to draw the clamping plate toward said bed plate.

5. In a safety razor, the combination ofa bed plate for supporting a cutting blade, a clamping plate for holding the cutting blade against the bed \plate, and a spring operatively connected with both of said plates and arranged to draw said plates together.

6. In a safety razor, the combination of a bed plate, a clamping plate on one side of said bed plate, a lug carried by said clamping plate and extending on the other side of said bed plate, and a sprin interposed between said lug and said be plate to draw the clam img plate toward the bed plate.

n a safety razor, the combination of a bed plate, a clamping plate bent downwardly over the rear edge of said bed plate, then rearwardly and forwardly to form a lug parallel with the clamping plate, and having an increased surface to receive pressure in releasing the cutting blade, and a spring interposed between said lug and said bed plate LYMAN H. COBB.

Witnesses: I p

O. A. BATOHELDER, FRANK H. SIBLEY.

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