121,415

PATENT SPECIFICATION

Application Date , Mar. 28, 1918.   No. 5447/18 Complete Left, Sept. 19, 1918. Complete Accepted, Dec.19, 1918.

PROVISIONAL SPECIFICATION. Improvements in Safety Razors

We, Henry Thomas Gill, of 17, Herbert Road, Bearwood, Birmingham, in the County of Warwick, and Harry Lucas, of 57, Sycamore Road, Erdington, Birmingham, aforesaid, Engineers, do hereby declare the nature of this invention to be as follows:—

Our invention comprises improvements in safety razors and refers more particularly to that class of such in which a two-edged or a single-edged blade is adapted to be clamped between two members or plates, the edge or edges of one of these plates being of a comb-like form to provide a safety guard. The invention is particularly applicable to the well-known “ Gillette ” type of razor in which the plates are laterally curved so as to provide a means for — Read “of” See erratum adjusting the edges of the blade relatively to the guard, but it may be applied to similar razors of a non-adjustable type.

In this class of razor as heretofore made a complete contact between the blade and guard plate prevents the free escape of the hair removed with the result that the razor clogs and becomes inefficient in use.

The primary object of the present invention is to overcome this defect and in accordance therewith the guard member is provided with a series of channels or passages disposed transversely across it.

The guard may be conveniently cast from aluminium or the like, being made of greater thickness than usual, say three sixteenths of an inch thick, and the surface which contacts with the blade is then provided with a series of parallel grooves, say eleven, which extend right across the laterally curved surface of the guard. These grooves may be conveniently cast on to the guard member. Intermediate between each groove a high or surface portion in the form of a rib is left against which the blade is clamped, leaving channels through which the hair and soap may freely pass when the razor is being used.

The outer plate member may be provided with a screwed member and a pair of upstanding pegs which engage with suitable holes in the blade, the screwed member engaging with the handle in well-known manner.

   Dated this 27th day of March, 1918.

We, Henry Thomas Gill, of 17, Herbert Road, Bearwood, Birmingham, in the County of W arwick, and Harry Lucas, of 57, Sycamore Road, Erdington, Birmingham, aforesaid, Engineers, do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement:—

Our invention comprises improvements in safety razors of the class in which a two-edged blade is adapted to be clamped between two members or plates, two opposite edges of one of these plates being of a comb-like form to provide a safety guard. The invention is particularly applicable to the well-known “ Gillette ” type of razor in which the plates are laterally curved so as to provide a means of adjusting the edges of the blade relatively to the guard, but it may be applied to similar razors of a non-adjustable type.

The primary object of the present invention is to prevent clogging of the razor with hair and in accordance therewith a series of channels or passages are provided running from one toothed edge to the other of the guard and disposed intermediate between the teeth of such edges. These channels or passages are formed in the guard member or in the blade of in both the guard member and the blade, and not only serve to allow the free escape of hair, but also, guide to one cutting edge lather removed by the other cutting edge of the blade.

In order that our invention may be fully understood and more readily carried into practice we have caused to be appended hereunto a sheet of drawings illustrating two constructional examples, wherein

Figure 1 represents a front view, in elevation of a safety razor of the “ Gillette ” type constructed in accordance with our invention.

Figures 2 and 3 are views perspective of the handle and outer plate member respectively of the razor.

Figure 4 is a view in longitudinal section, Figure 5 is a plan view and Figure 6 a view in perspective of the guard member of the razor.

Figure 7 is a vieiv in perspective, of a razor blade,

Referring more particularly to Figures 1 to 6 of the drawings, a is the guard which may be conveniently cast from aluminium or the like, being made of greater thickness than usual, say three sixteenths of an inch thick. The surface which contacts with the blade is provided with a series of parallel grooves b, say eleven, which extend right across the laterally curved surface of the guard a. These grooves may be conveniently cast on to the guard member. Intermediate between each groove a high, or surface portion in the form of a rib c is left against which the blade is clamped, leaving channels through which the hair and soap may freely pass when the razor is being used.

The outer plate member d may be provided with a screwed member e and a pair of upstanding pegs f which engage with holes g in the guard, the screwed member e engaging with the handle h in well-known manner.

In lieu of channels or grooves in the guard member, or in addition thereto, shallow grooves or channels i, see Figure 7, may be provided in one or both surfaces of the razor blade, such grooves being laterally directed and starting behind the cutting edge of the blade. Ribs j are left between the grooves and form the surface which is clamped against the guard, the channels i then permitting the hair and soap to move away clear of the cutting edge of the razor. The usual holes k are provided in the blade for positioning and securing the same.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim is:

1. A safety razor of the specified kind comprising a plurality of transverse channels or passages running from one toothed edge to the other of the guard and disposed intermediate between the teeth of such edges.

2. A safety razor according to Claim 1, wherein the transverse channels or passages are situated between the guard member of the safety razor and the blade thereof, said channels or passages being adapted to permit hair and soap to pass through and to guide lather from one cutting edge to the other.

3. A safety razor according to Claim 1, wherein transverse channels or passages are provided alternating with transverse ribs extending from one toothed edge to the other in alignment with the teeth on said edges and forming a bearing surface between said guard member and said blade; said channels or passages being adapted to permit soap and hair to pass through them.

4. A safety razor according to any of the preceding claims, wherein said channels or passages are provided in the bearing face of the guard member, or in the face or faces of the shaving blade or in both.

5. For use in a safety razor of the specified kind, a shaving blade provided on one or both faces with transverse channels or passages for the hereinbefore specified purpose.

6. An improved safety razor or an improved blade therefor substantially as hereinbefore described with reference to the accompanying drawing.

   Dated this 18th day of September, 1918.

Page 1, line 10, for “ for ” read “ of.”

Patent Office,

   June 11th, 1919,