US951036A - Safety-razor. - Google Patents

Description

lJ. K. WATERMAN.

SAFETY RAZOR.

APPLICATION FILED APILS, 1909.

Patented Mar. l, 1910.

ran -sATEs PATENT OFFICE.

JOHN' K. WATERMAN, 0F NORFOLK, VIRGINI.

SAFETY-Razon..

Speciicationl of Letters Patent.

Patented nai. i, raro.

` Application led April 8i, 1909. Serial No. 488,707.

To all whom "it may concern. l

Be it known that" I, JOHN K. WATERMAN, of Norfolk, in the county of Norfolk and in the State ofVirginia, have invented a certain new and useful Improvement in Safety- Razors, and do hereby declare that the following is a full, clear, and eXact description thereof.

The object of my invention is to provide a safety razor which will be adaptable to all portions of the face, and which will have a great extent of cutting edge, and withal will' be simple of construction and convenient of manipulation in assembling and separating its parts, and to such ends my invention consists in the safety razor having the construction substantially V as hereinafter specified and claimed.

'In the accompanyin drawing, Figure 1 is a perspective View o a safety razor embodying my invention; Fig. 2 a Vertical section; Fig. 3 a detail View in perspective of the blade adapted for use with the razor shown in the previous gurcs; Fig. 4 a per spective view of thc guard plate; vand Fig. 5 a similar View of a different form of blade.

My invention in the embodiment illustrated, as is common in safety razors, comprises a toothed guard plate 10, and a head 'or clamping plate 11, between which and the guard plate is placed the blade 12. In the construction shown, there is a handle 13 that projects from the guard plate that is tubular, and through which passes a shank or stem 1.4 attached to' lthe head or clamping plate which projects at one end beyond the Vhandle and has a nut by which the parts may be secured together.

In outline, the blade and the head and' guard plate are angular inform, and as I prefer it, they are square, although, as illustrated in Fio.- 5, for example, a triangular form ofy bla e and clamping members may be employed. rlFhe square form, however, is desirable, because it gives cutting edges of greater extent, since there are four sides, to the square. 'Ihe angular form is advan-` tageous because it enables one ormore of the edges to be straight as at a and the' remainder curved, thus presenting an assortment of edges suited to did'erences in the curvature or contour of the face.

is slit on diagonal lines from the angles or corners by slits or slots 15. To add to the securit of the blade to prevent its turning, the ho e 16 provided for the passage of the clamping rod or stem, has at one or more points radial notches 17, and the rod or stem has a. corresponding feather or key 18 to engage the same.

It will be seen that by reason of the curvature of certain of the cutting edges, access to portions of the face is possible, to which it is diiiicult to apply a straight edge, and by reason of the straight form of certain of the cutting edges portions of the face may be more comfortablyl and satisfactorily shaved than if only curved cutting edges were employed. The slitting of the blade as it renders each of the several edges independently adjustable, enables certain of the' ed es to be curved and others straight. It wiIl be observed that the side edges of each slit or slot diverge outwardly. rIhe object of this isl to enable the closin in of theside edges under the pressure of the clamping means, so that when wholly clamped said edges may be in contact.

Instead of making vthe blade of dexible or bendable material, it may be made of sufficiently sti material, so that in its original form. it has the concavo-convex shape to whichY the bendable blade is pressed, and in this case it is not necessary to provide the blade with slits because it always has the one form.

In' order to enable the blade to be reap plied, after the parts have been separated, in the same position, I suitably mark the corresponding portions of the blade'and of the head, as by numbers, using, for example, the numbers 1, 2, 3 and 4 on the respective corresponding parts. j I-Iaving thus described my invention, what I claim is- A safety razor comprising a handle, a

guard plate 'having a con'cavo-convex blade In testimony that I claim the foregoing I seat, the edges of which are straight and have hereunto set vmy hand.

curved a like shaped clampin plate a' blade between the guard plate an clam Z JOHN' K WATERMAN' 1n v 5 plate and means whereby the blade is llel l Witnesses:

t'o the straight and curved outline of the CHAs. J. WILLIAMSON, guard plate. F. J. EHLERS.

Images