US2052495A - Electric sanitary safety razor - Google Patents

Description

Aug. 25, 1936. J. ONNE 2,052,495

' ELECTRIC SANITARY SAFETY RAZOR Filed June 17, 1935 INVENTOR 3 ATTORNEY WITNESS Patented Aug. 25, 1936 UNITED s'mras PATENT UFFHQE 3 Claims.

This invention relates to a power driven safety razor and has for the primary object the provision of a device of this character which is convenient to use, easy to clean and maintain in a sanitary condition and is capable of shaving dry. moist or lathered skin without irritation thereto and is self-sharpening and reversible so that either group of cutting mediums thereof may be used while the other group is being sharpened during the use of the device.

With these and other objects in view, this invention consists in certain novel features of construction, combination and arrangement of parts to be 4 hereinafter more fully described and claimed.

For acomplete understanding of my invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a vertical sectional view illustrating a power driven safety razor constructed in ac cordance with my invention.

Figure 2 is a transverse sectional view taken on the line 2-2 of Figure 1.

Figure 3 is a transverse sectional view taken on the line 33 of Figure 1.

Figure 4 is a plan view, partly in section, showing the rotor and retainer of the razor.

Figure 5 is a sectional view taken on the line 5-5 of Figure 1.

Figure 6 is a fragmentary transverse sectional view illustrating a modified form of my invention.

Figure 7 is a fragmentary plan view, partly in section, showing the form of rotor employed in my modified form of invention.

Referring in detail to the drawing, the numeral l indicates a handle of a suitable shape so as to permit convenient use oi the razor. The handle II has journaled therein an arbor 2, one end of which is shaped for connection with a shaft or drive medium of a power source (not shown). It is to be understood that the power source may be of any form such as an electric motor and its connection to the arbor 2 be through a flexible shaft. Removably mounted in the handle 6 is a bearing sleeve t acting as a journal for areduced portion t of the arbor. Ihe reduced portion t provides to the arbor spaced annular shoulders b. The ends of thebearing sleeve abut said shoulders to prevent endwise movement of the arbor in the handle but still permit free rotation or oscillation of the arbor. While I have referred to the arbor as being driven by an electric motor, it will be understood that some conventional type of power source may be empioyed which will impart to the arbor an oscillatory movement.

One end of the handle,is reduced and slotted to form a chambered split type clamp 6 having apertured ears i to receive a bolt or like fastener 8. The clamp receives one end of a shell 9 and provides an effective means of detachably securing said shell to the handle. The shell is of tubular formation and includes companion sections It. Adjacent edges of the companion sections l0 are beveled or cut away to define cutting edges H. The cutting edges H are spaced to define a longitudinal slot in the shell. The other edges of the companion sections are spaced so that said companion sections through the manipulaton of the clamp may be adjusted toa rotor l2 operating in the shell for the'purpose of compensating for wear. The rotor is of tube form and extends substantially the full length of the shell 9 and has one end constructed to form a detachable drive connection with the end of the arbor 2. The free end of the shell 9 is closed by a removable cap i3 which acts to prevent endwise movement of the rotoraway from the arbor 2 and also aids the clamp in supporting the companion sections I U of the shell in proper relation to one another. Itis to be understood that the cap it can be removed from the shell'to permit removal of the rotor for cleaning purposes. Located in and extending substantially the full length of the rotor is a tubular receiver Ht which also projects through an opening in the cap in the form of a finger piece it. A projection it is formed on the receiver Ml and enters a notch of the cap to hold said receiver against rotation. '35

The receiver is provided with a longitudinal slot Ni arranged opposite the slot defined by the cutting edges ii in the shell 9.

The receiver it acts to collect hair removed by the cutting edges it and the rotor during the movement of the device over a persons skin. They receiver it can be easily removed and emptied after the shaving operation.

The rotor i2 is of tubular formation and has series of relatively spaced slots l'i formed therein, the end walls of which are undercut or beveled or otherwise shaped to define cutting edges it. Therefore, it will be seen that the rotor constitutes a series of closely related cutting edges for cooperation with the cutting edges ii in severing hair that may pass into the slots l'i between the cutting edges it during rotation or oscillation of the rotor and the movement of the shell over the skin. The slots ll of one group are staggered relative to the slots of the other group.

While I have described the rotor as being slotted to define the cutting edges, cutting edges l8 may be formed by providing in the rotor rows of closely related openings wherein the openings of one row are staggered relative to the open-- ings of the adjacent rows. The shapes of the openings may vary.

The construction of the first rotor described by employing the slots I! will provide to said rotor four groups of cutting edges II so that during rotation of the rotor in one direction one pair of groups of cutting edges cooperate with the cutting edges II in severing the hair while 'the other pair of groups of cutting edges have wiping contact with the cutting edges I i and thereby become sharpened and also have a sharpening action on the cutting edges II. The rotor is constructed so that it may be reversed in the shell 9 whereby another group of cutting edges l8 may be caused to operate in conjunction with the cutting edges II when the other group of cutting edges ill have dulled from use and the last-named cutting edges I8 then are sharpened during the use of the device.

In operation, the shell is brought lightly in contact with the skin and moved over the skin in a direction at right angles to the razor. The hair of the skin enters the slot of the shell defined by the cutting edges H and is cut by the moving cutting edges oflthe rotor cooperating with the cutting edges H. The severed hair enters the receiver H by way of the slots therein. Irritation .or' the skin is prevented by the skin contacting the non-cutting part of the razor when the cutting parts thereof become active. For a delicate skin, with soft hair the cutting edges H of the shell are brought closer to each other by loosening the fastener 8 and turning the companion sections of the shell slightly until the desired adjustment or the cutting edges H is reached. Thus the irritation of the skin is almost completely eliminated. After the shaving operation, the receiver may be readily removed and washed due to the fact that one end of the receiver is entirely open so that water may readily surge into and out of the receiver thoroughly cleasing the latter.

Having described the invention, I claim:

1. A safety razor comprising a handle, a shell secured to said handle and having spaced longitudinally extending cutting edges adapted to be arbor journaled in said handle and adapted for connection to a power source, a shell detachably connected to the handle, relatively spaced cutting edges provided to the shell and forming therein a slot, a rotor journaled in the shell and connected to the arbor, groups of cutting edges provided to the arbor and the cutting edges of said groups being closely related and arranged in staggered relation to the edges of adjacent groups for cooperation with the cutting edges of.

the shell in severing hair during the turning of the rotor, a removable cap closing one end of the shell and non-rotatable relative thereto, and a slotted receiver mounted in the rotor with its slot opposed to the cutting edges of the shell to permit severed hair to pass therein and collect, and a detachable connection between the cap and the receiver.

3. A safety razor comprising a handle, an arbor journaled in said handle and adapted for connection to a power source, a shell detachably connected to the handle, relatively spaced cutting edges provided to the shell and forming therein a slot, a rotor journaled in the shell and connected to the arbor, groups of cutting edges provided to the arbor and the cutting edges of said groups being closely related and arranged in staggered relation to the edges of adjacent groups for cooperation with the cutting edges of the shell in severing hair during the turning of the rotor, a removable cap closing one end of the shell and non-rotatable relative thereto, a slotted receiver mounted in the rotor with its slot opposed to the cutting edges of the shell to permit severed hair to pass therein and collect, a detachable connection between the cap and the receiver, said shell including companion sections whereby said shell may be decreased in diameter to bring about a comparatively snug fit with the rotor when wear occurs.

JOHN SONNE.

Images