US2112402A - Apparatus for vibrating the blades of safety-razors - Google Patents

Description

Ma ch 29,1938.

. JAFFE APPARATUS FOR VIBRATING THE BLADES OF SAFETY RAZORS Filed Sep t. 7. 1954 INVENTOR filchqrclJafe BY g g f Ma a ATTORNEY Patented Mar. 29, 1938 UNITED STATES APPARATUS FOR'VIBRATING THE BLADES OF SAFETY-RAZORS Richard Jafl, Sorengo-Lugano, Switzerland Application September 7, 1934, Serial No. 143,111 In Germany September 11, 1933 2 Claims.

Safety razors with relatively movable razor blades therein which are reoiprocated during the shaving operation by means of a motor or the like in the direction of the longitudinal cutting edges for the purpose of obtaining improved cutting action, are known.

The present invention relates to a vibrating device for producing the same eifect in safety razors with a fixed blade as is obtained in razors with movable blades. The vibrating device according to the invention consists in imparting to the safety razor with fixed blade, in addition to the manually effected movement, at least one supplementary vibratory movement whereby the razor and its blade have imparted thereto the cutting movement resulting from these movements.

The device consists of an apparatus for producing vibratory movements, said apparatus being held with the same hand as the safety razor, so that it transmits its vibrations to the hand and thus to the safety razor.

The device may also be directly connected with the safety razor. It may be actuated by a springactuated clock mechanism or by a small motor or the like.

An illustrative embodiment of the device for producing the vibratory movement is shown on the drawing.

Fig. 1 is a longitudinal section of a device disposed in the handle of a safety razor, and having a catch-actuated weighted pendulum.

Fig. 2 is a plan view of the device after removal of the upper closure cap.

Fig. 3 is a longitudinal section of the device driven by means of an electric motor and centrifugal pendulums arranged in the handle.

Fig. 4 is a view of the casing containing the driving mechanism afllxed to a hand razor.

Fig. 5 is a plan view thereof.

Fig. 6 is a longitudinal section of the device with a monolateral oscillating weight.

Arranged in an elongated casing I provided with a closure cap 2, concentrically about a shaft 3 which is provided with a double winged nut 4 at the end thereof which projects beyond the casing l, are spring housings 5 which serve to receive spiral springs 6. The spring housings 5 are provided with bosses I which have hooks 8 upon which are mounted the inner spring ends 9. The outer spring end I is attached to hooks H, which are fixed to the inner periphery of the spring housing. The lowermost spring is attached by its inner end to hook I2 which is fixed on shaft 3. By turning shaft 3 by means of the (Cl. 3H4) winged nut to the right, the springs H are tensioned gradually, ratchet wheel l3 preventing retrograde movement. The uppermost spring housing I4 is provided with a gear IS on its boss l5, said gear engaging wheel l8 journaled in false bottom l1, pawl wheel 20 being fixed on axis l9. This moves the pawl 2| which reciprocates the oscillating lever 22 with weight 23. The latter impacts against points 24 of the casing closure cap 2 and vibrates the latter and the casing I. The upper end of shaft 3 is rotatably journaled in bottom I! so that gear I6 may cooperate freely with wheel l8. A slide 25 enables the impact mechanism to be started and stopped.

According to this embodiment, the razor 26 of conventional construction is attached to the easing closure cap 2 by means such as a connecting piece 21, and the vibrations produced in casing l which serves as the handle are directly transmitted to the razor 26.

In the second embodiment illustrated in section in Fig. 3, an electric motor drives the driving shaft 3. The winding of motor 28 is fixed in casing I, which functions as the handle, while the armature 29 thereof is securely connected with shaft 3 and drives the latter when electric current is supplied. Fixed to shaft 3 is a gear l6 which engages gear l8. This is securely mounted on spindle 30 which carries the pendulums 3|. The latter is rotatably journaled in false bottom 30 i1. Upon rotation of pendulum 3|, these pendulums impact against the wall of casing closure cap 2, as a result of the centrifugal force, and set the closure and the razor connected thereto in vibration.

According to the embodiment shown in Figs. 4 and 5, the oscillation-producing vibration device 32 is secured to the razor 34 by two bands 33, and transmits the oscillations thereto.

Fig. 6 shows the fourth embodiment. Arranged in casing closure cap 2 is an eccentrically mounted, heavy, unbalanced rotational mass 35, which is rotatably journaled in the false bottom I! and is driven from the drive shaft 3 through the medium of gears 18 and I6, whereby it is 45 rotated. The mass 35 bumps against the wall of the casing closure cap 2, thereby oscillating the latter together with the entire casing 32. The

razor is aifixed to the latter at the top or side thereof. a

The casing transmits the vibrations to the hand and to the razor or directly to the latter.

The spring drive may be replaced by a motor or the like. In this event, the spring mechanism is eliminated. It is obvious that use may said pendulum and said ratchet wheel, so that the pawl imparts an oscillatory movement to said pendulum, said weight striking against the casing wall and thus vibrating the latter and the razor.

2. As a new article oi manufacture, a vibrating attachment for a safety razor having a handle comprising a casing, means ior firmly mounting the casing upon the handle 0! the razor, a weighted rock arm mounted within the casing, and means for rapidly oscillating said weighted rock arm to set up vibrations.

RICHARD JAFFE.

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