US2116229A

US2116229A - Electric razor

Info

Publication number: US2116229A
Application number: US112322A
Authority: US
Inventors: Edward G Bader
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-11-23
Filing date: 1936-11-23
Publication date: 1938-05-03
Anticipated expiration: 1955-05-03

Description

May 3, 1938.

E. G. BADER ELECTRIC RAZOR Filed Nov. 23, 1936 Patented May 3, 1938 PAT E N arr:

Edward G. er, Inglewood, Calif.

Application November 23, 1936, Serial No. 112,322

2 Claims.

" This invention relates to an electric razor.

An object of the invention is to provide a razor electrically operated in its preferred form, wherein there is a body or housing providing a stationa ary blade adjacent which there is a suitable guard and a bladed rotor driven by the electric motor and rotatably mounted adjacent the blade to cooperate therewith in shearing hair.

The present razor operates primarily on a shearing as distinguished from a cutting principle.

Another object of the invention is to provide a razor having a stationary blade adjacent which is rotatably mounted a bladed rotor and to provide a novel, simple, and durable construction for rotating the rotor at required speed to cause the construction to adequately shave all surface traversed by the razor. I

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Another object of the invention-is to provide a razor construction having a novel, simple, and advantageous guard construction so arranged as to expose the entire length of the stationary blade, affording an opportunity for hair traversed by the guard to freely stand immediately in front of the stationary blade so as to be sheared OE.

With the foregoing and other objects in view, which will be made manifest in the following detailed description, and specifically pointed out in the appended claims, reference is had to the accompanying drawing for an illustrative embodiment of the invention, wherein:

Fig. 1 is a view in side elevation of the improved electric razor. Fig. 2 is a partial view of the under side of the razor taken in the direction of the arrow 2 upon Fi 1.

Fig. 3 is a partial view in vertical section taken substantially upon the line 3--t upon Fig. 2. v Fig. 4 is a sectional view taken substantially upon the line fl-t upon Fig. 3. s

Fig. 5 is a front view in elevation of the razor, taken in the direction of the arrow 5 upon Fig. 3.

Fig. 6 is a view in elevation of the cutter or bladed rotor.

Referring to the accompany drawing, wherein similar reference characters designate similar parts throughout, the improved razor consists of a suitable tubular handle "I within which is mounted a small electric motor whichmay be of any preferred design and which is supplied with current preferably through a flexible cord II for attachment to a light socket.

The rotor shaft of the motor that is enclosed within the handle is indicated at l2 and preferably has a squared end as indicated at l3. With- (on. so-is) in the handle there is mounted a bearing block it held in position as by a set screw i5. This bearing block forms a bearing for a worm it, the upper end of which is socketed as at H to receive the squared end it on rotor shaft it. The worm is equipped with a thrust collar or "shoulder it which bears against the bearing block it and the tooth or thread 19 on the-worm is arranged to be located within a housing or body 2!) into which the end of the handle extends. The body 20 has its forward face covered by a cap it held in position as by screws it and this provides a bearing for the lower end of the worm.

A cylindrical bore it extends transversely through the body or housing very close to the bottom thereof. The bottom of the housing is preferably convexly shaped, as indicated at M, the curvature being somewhat greater than the radius of curvature of the bore 23. In this manner the bore 23 is very nearly tangent to the curved surface of the bottom of thehousing at approrrimately the center line of the bottom of the housing forming a stationary blade 25 that extends across the housing and which is directed forwardly or underneath the handle.

- The metal of the housing forwardly of the blade 25 is slotted as indicated by slots 26 forming the tines ll of a guard for the blade, the tines terminating a short distance in front of blade 25. In this manner the tines of the guard are not only integral with the housing in the preferred form but their upper surfaces define a portion of the interior surface of bore 23.

Within bore 23 there is disposed a bladed rotor 28 having a plurality of blades 29. In the preferred form of construction these blades have their outer edges'of reduced thickness as indicated at 30. The portions of reduced thickness form cutting edges designed to cooperate with the stationary blade 25 in shearing. The thickened portions of the blades 29 constitute the teeth of a worm wheel meshing with the thread or tooth IS on the worm. While the blades 29may extend transversely across the rotor, in the preferred form of construction they are given a very slight pitch as shown in Fig. 6 so as to be of slight helical contour.

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The ends of the rotor are provided with trun- The operation and advantages of the improved electric razor are as follows:

In the course 01' shaving the razor is moved across the face in a manner quite similar to that of a conventional safety razor. The guard tines 21 being located closely adjacent the blade 25 serve to prevent inadvertent cutting or lacerations. However, as the tines terminate forwardly of the blade 25, as shown on Fig. 2, any hair covered by a tine in the course of movement of the razor is afiorded an opportunity just ahead of the stationary blade 25 to stand freely before it is encountered by the stationary blade. The rotation of the motor produces rotation of the worm i6 which is turn rotates the bladed rotor.

In the construction shown, if the electric motor is designed to rotate at a speed of 1700 R. P. M. the relation between the bladed rotor and the worm is such asto cause 1700 shearing cuts to take place .per minute in as much as one blade is caused to sweep adjacent the stationary blade 25 for every revolution of the worm. This high succession of shearing cuts serves to easily and quickly cut all hair from the skin traversed by the razor without pulling due to the fact that cutting action by blade 25 is not relied upon except in con junction with the shearing action involved in the blade 29 moving across the stationary blade.

While the stationary blade 25 has its cutting edge quite thin, it need not be as thin as the edge of a razor blade-which is used for cutting as distinguished from shearing. A

From the above described construction it will be appreciated that the improved electric razor is of simple and sturdy construction, having arelatively few moving parts. It will enable shaving to be accomplished without pulling and cause all hair traversed by blade 25 to be sheared off. Due to the fact that the tooth on the worm engages the sides of the thick portions of the blades the thin portions of the blades which present the shearing edges are not engaged by the worm nor are their edges dulled in any manner.

The holes 35' formed in the front of the housing provide for egress of cut hair from bore 23. The present razor is primarily designed for use without requiring the application of lather or the equivalent and such being the case there is no necessity for frequent or regular cleaning. However, when cleaning is necessary this may be easily accomplished by removing one of the bearings 32, which enables the rotor to be withdrawn and cleaned. Likewise, removal of cap 2i permits removal of the worm for this purpose when occasion requires.

Various changes may be made in the details of construction without departing from the spirit or scope of the invention as defined by the appended claims.

I claim:

1. In a razor, a housing providing a stationary blade extending transversely thereof, a bladed rotor in the housing, the blades of which are arranged to sweep adjacent the stationary blade, a worm extending into the housing meshing with the blades of the rotor and serving to rotate the rotor, the edges 01' the blades of the rotor being of reduced thickness so as to present shearing edges which cooperate with the stationary blade and which will not be engaged by the worm, and means for rotating the worm.

2. In a razor, a housing providing a stationary blade extending transversely thereof, a bladed rotor in the housing, the blades of which are arran ed to sweep adjacent the stationary blade, a worm extending intothe housing meshing with the blades of the rotor and serving to rotate the rotor, the edges of the blades of the rotor being rebated to present shearing edges which cooperate with the stationary blade but which will not be engaged by the worm, and means for rotating the worm.

EDW. G. BADER.