US1798820A - Safety razor - Google Patents

Description

March 31, 1931.

D. H. VAN HASSELT ET AL 1,798,820

SAFETY RAZOR Filed Sept. 10, 1928 l atented Mar. 31, 1931 a TED STATES PATENT OFFICE DMIWID LHARTOG VAN HAS SELT, OF BRUSSELS, BELGIUM, AND PIERRE MONNOYEUR, OF

PARIS, FRANCE sum RAZOR ltpplication filed September 10, 1928, Seriail No. 305,064, and in France May 12, 1928.

tlur invention relates to a safety razor with rigid blade, requiring no taking to pieces and practically not-to be Worn out.

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it consists essentially of a blade of variable section and thickness suitably mounted in a frame which constitutes a safety guide, and a special locking device which traverses the blade and maintains the frame against the blade, the whole thus constituted being supported by a handle metallic or not, and easily detachable for placing at different points of the razor, as will be explicitly explained hereafter.

"With this object in view, the invention essentially consists in the special arrangements and combinations of parts hereinafter fully described and claims.

tln the annexed drawings:

Fig. 1 is an elevation of the side on which the locking device fastens the frame on the blade.

Fig. 2 is also an elevation showing how the loclring device is actuated.

Fig. 3 is a view showing the frame movable round the base of the blade slightly displaced in reference to said blade.

Fig. l is a view showing the special locking device.

Fig. is a section through the blade, the frame being removed.

Fi 6 is a view showing how the handle may he placed.

The razor according to our invention conas stated, of three parts:

(1) of a blade 1 (Figs. 1 and 5).

(2) of a frame 2 pivoting at the base of the blade 1, in the boss 3 hereinafter referred to, of a handle 4 which screws either into said boss, or into the middle of the blade itself t'lEig. 6).

The blade has variable section and thickness, it has double cutting edges, and owing to its fixture in a kind of slide 5 suitably perforated (66) it can easily be detached; the middle is a hole 7 allowing it to be mounted as a knife or as at 8 in the shape of a scraper, as shown in Fig. 6. The blade may be in two parts, assembled between the slides.

pointed out in the appended The frame 2 is a safety device, which pivots in the boss 3, in which it is suitably fixed by screws threaded right and left hand 9 and 10. -In Fig. 3 it is clearly shown how the safety frame 2 pivots round the boss 3.

This frame comprises in its safety part a special locking device, which allows the latter to be fixed securely and to render movement impossible; it comprises a sleeve traversed through and through by a screw 12 of special shape. On one side (Fig. 2) it terminates in a milled head, by means of which it can be turned in the suitable direction. On the other side it terminates in a groove ex tending half way round the screw as shown in Fig. 1 at 13. It is evident that when the groove presses on the blade or on any part embodying the latter, the frame is firmly pressed against the blade without any movement being possible.

When on the other hand the screw 12 is turned through about 180, the out part of the groove allows the frame to be disengaged by pivoting round 3 (Fig. 3).

The muflle including the screw is held, in the example given, by screws with different threads, which allows the latter to be locked completely.

Finally the handle 4 screwed either into the bottom of the boss 3, or into the middle of the blade in the threaded hole 8, and in this case the razor appears as shown in Fig. 6.

The razor according to our invention is used either as a straight razor (knife shaped) or as a hand razor by screwing the handle in. the end of the blade or as a scraper razor, by screwing in the handle at right angles to the blade.

According to the device already described. it suffices to turn the lock half round to free the blade for stropping or cleaning after use, the placing in position being instantaneous.

The frame replaces advantageously the safety comb of the hitherto known razors, which is too easily fouled, it smooths the skin better than the comb, since it cannot form wads, being also extensible by several millimetres, it allows the blade to be removed in any way. It also allows the cut to be regu- (metallic or not) is lated as desired. The blade can. also be displaced from its axis so as to obtain the desired regulation, because the holes in the blade are larger than the-screws which pass through them. Being parallel and completely outside the cutting edges, the sidesof the frame make it impossible to turn the edgeof the razor, the blade no longer touching the skin when it is used as a scraper.

For this reason the life of the blade is increased, and the cost of regrinding is saved, a simple stropping on the hand or on a leather strep is suiiicient.

The razor according to our invention pos- 1s sess es many advantages and none of the numerous inconveniences of the known safety razors such as: disagreeable and dangerous handling of the spare blades and special grinding, costly and often badly done, is avoided. The rapid wearing out and onerous purchases of new blades are avoided. There is no risk of losing any part of or spoiling it by letting it fall. The parts of this razor constitute as has been seen, an homogeneous whole. Further it entails no loss of time, contrarily to the razors hitherto in use. As known, it is easy to turn the edge of the blades of said razors, because these act as a scraper if a suitable inclination is not given to the blade. With the razoraccording to our invention these disadvantages disappear, because its blade isfixed, thick and of unlimited life, not requiring any special grinding or mounting for same.

Finally since the blade never has to be removed, the razor is always ready for use.

What we claim is: 1. In a safety razor in combination a blade, a frame in which the said blade is mounted, a boss at the base of the said frame, means for holding the blade in the frame, a guard opposite end of the guard', a lock screw extending through the sleeve and formed with a recess with which a blade in the holder cooperates, a handle, and means by which the handle may be applied to the lug or to the blade carrying frame. In testimony whereof we have afiixed our signatures.

DAVID. HARTOG VAN HASSELT; PIERRE MONNOYEUR.

pivoted to the frame, a sleeve on one end of v the guard, a screw extending through said sleeve, the end of said screw having a half round groove therein which cooperates with the end of the blade, whereby to permit the frame to be disengaged from the blade, a bandle, and means whereby thesaid handle is adapted to be placed at diflerent points of the razor.

2. A safety razor comprising a blade carrying frame, a guard having parallel side members adapted to be parallel with opposite sides of a blade when the latter is held by the frame, means for pivotally mounting the guard at one end of the blade frame, and means at the opposite end of the blade frame for locking the guard-in operative position including a cooperating with the blade.

rotatable member mounted on the guard and

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