US2543725A - Dry shaving device - Google Patents

Description

Feb. 27, 1951 F, W, KNOWLES v2,543,725

DRY SHAVING DEVICE Filed June l1, 1947 r "Il gmm Patented Feb. 27, 1951 Frederick Wilfred Knowles, London, England, as-

signor to The Wilkinson Sword Company Lim f ited, London, England, a British corporation Application June 11, 1947, Serial No. 753,924 In Great Britain October 24, 1942 Section 1, Public Law 690, August 8, 1946 Patent expires October 24, 1962 3 Claims. l

This invention relates to shaving devices of the type known as dry shavers.

The object of the invention is to Aprovide a dry Shaver of simple and reliable construction employing a minimum number of parts.

A further object of the invention is to provide a dry shaver which can be cheaply produced by mass production methods.

A further object of the invention is to provide a dry shaver in which self-sharpening of the blade is produced when the shaver is in use.

'Iwo forms of dry shaver, in which these objects are achieved, are illustrated in the accompanying drawings wherein Fig. 1 is a sid-e elevation of one form of dry shaving device constructed according to this invention;

Fig. 2 is a front elevation;

Fig. 3. is a side view in section;

Fig. 4 is a front View in section;

Fig. 5 is a front view in section of a second constructional form of the invention;

Fig. 6 is a side view in section;

Fig. '7 is a view in plan, and

Fig. 8 is a side elevation.

The device shown in Figs. 1-4 comprises a frame having two side plates, 2, 2 the lower edges of which are arcuate and inwardly turned as at 3, 3 and connected together at the ends by cross pieces 4, 4. The edges of a perforated shield I of thin stainless steel sheet are soldered over the inwardly turned arcuate edges 3, 3 whereby the shield is maintained flexed in corresponding arcuate shape. The side plates 2, 2 are linked to a handle 5 by an arbor 6 passing through apertures in the side plates and through a transverse bore 'I in the handle and retained by a screw 8. A slotted rectangular blade 9 is carried on the lower end of the handle 5 and is bent in such a way as to have two parallel sharpened edges I0,

I Il pressed into contact with the shield I.

In the modied construction shown in Figs. 5-8 the frame similarly to the frame shown in Figs. 1-4 comprises two side plates II, Il having inwardly turned lower edges I2, I2 of arcuate shape to which the edges of a perforated shield I3 of thin stainless steel sheet are soldered thereby maintaining the shield flexed in corresponding arcuate shape. In this modication, however, the side plates I3, I3 of the frame are each formed with a closed slot I4 in which a sliding member I5 hingeably connected to the lower end of a handle I6 is mounted so asA to be capable of sliding therein. A slotted rectangular blade I1 similar to the blade 9 of Figs. 1-4, is carried on the lower face of the sliding member I5 and, like the blade 9, has two parallel sharpened edges pressed into contact with the shield I3.

In both the constructions above described the shield I or I3 is so mounted that in being moved over the surface to be shaved itY partakes of a rocking motion. In the case of Figs. 1-4 the extent of the rocking motion is limited by the cross pieces 4, 4, and in the case of Figs. 5-8 by the ends of the slots I4, I4. In both cases the rocking movement is sufficient to enable the blade to slide to and fro across the perforated area of the shield.

Further, in both cases the .blades are of a springy nature and the cutting edges in contact with the inner surface of the shield are arranged at a suitable angle to produce a self-sharpening action on the blade when in use.

In use, the handle is operated to slide the blade to and fro on the inside surface of the shield thereby shearing hairs protruding through the perforations in the shield, the frame carrying the shield being simultaneously rocked from end to end over the surface to be shaved.

The blade may be held in contact with the shield by pressure with the handle or by spring tension. More than one blade may be provided.

What I claim and desire to secure by Letters Patent is:

l. A manual dry shaving device comprising a handle, a frame having an arcuate edge, a perforated shield fixed to said arcuate edge whereby the shield has a corresponding arcuate shape, a blade fixed to said handle so as to be movable thereby over, and in contact with, the inner surface of the arcuate shield and pivotal means for rockably connecting said handle and said frame so that both said handle and said frame can rock relatively to each other around said pivot.

2. A manual dry shaving device according to claim l wherein said handle is adapted for pivotal connection intermediate of its ends to said frame and said rockable connecting means comprise a pivot pin passing through said handle and frame, means being provided for retaining the pivot pin in the frame.

3. A manual dry shaving device according to claim 1 wherein said frame comprisestwo side plates each having a'closed slot therein and said rockable connecting means comprise a member connected to one end of said handle and slidably mounted in said slots, said blade being carried on said slidably mounted member.

FREDERICK WILFRED KNOWLES.

(References on following page) l 3 REFERENCES CITED Number The following references are of record 1n the z'g'gg le of this patent: A 2 'l UNITED STATES PATENTS` Number Name Date Number 58 '103 2,331,500 Rana oct. 12, 1943 5 Name Jate Jepson Mar. 28, 1944 Beatty June 18, 1946 FOREIGN PATENTS Country Date Great Britain Jan. 1'?, 1944

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