US2161981A

US2161981A - Razor

Info

Publication number: US2161981A
Application number: US110448A
Authority: US
Inventors: Ruskin Henry
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-11-12
Filing date: 1936-11-12
Publication date: 1939-06-13
Anticipated expiration: 1956-06-13

Description

H. RUSKIN June 13, 1939.

RAZOR Filed Nov. 12, 1956 skin INVENTOR.

Henzy Ru BY 04W 5 HIS ATTOZEY.

Patented June 13. 1939 UNITE STATES PATENT OFFICE SClnilnl.

This invention relates to shaving instruments.

It is an object of this invention to provide an improved shaving instrument which is relatively simple and inexpensive in construction and high- 1y efllcient in use.

Another object of this invention is to provide a shaving instrument of such a construction that it may be easily handled by the user when applying it to the various parts of the face of the individual being shaved.

A further object of this invention is to provide a cutting member, in a shaving instrument, which will by its movement remove the cut hair from the body containing the cutting member.

Other objects will appear hereinafter.

The invention consists in thenovel combination and arrangement of parts to be hereinafter described and claimed.

The invention will best be understood by reference to the accompanying drawing in which:

Fig. 1 is a perspective view of the new shaving implement;

Fig, 2 is a horizontal sectional view taken along lines 2--2 in Fig. 1;

05 Fig. 3 is a fragmentary elevational view as seen from lines 3-3 in Fig.2;

Fig. 4 is a vertlcal'sectional view taken along lines 4-4 in Fig. 2;

Fig. 5 is a fragmentary elevational view as 30 seen from lines 55 in Fig. 2;

Fig. 6 is a perspective view of a face guard which forms a part of the structure illustrated in the foregoing figures of drawing; and

Fig. '7 is an enlarged fragmentary vertical sectional view taken at line I in Fig. 4.

Referring to the drawing, the new shaving implement is illustrated comprising a handle portion l0 and a gear drive and cutter housing II. The housing I I is constructed in a manner to support 40 a drive shaft l2 for axial movement by a power unit such as a conventional electric motor 3, which may be disposed within the handle II or which may be joined to the drive shaft l2 within the handle Ill by means of a flexible drive cable. 5 For this reason the drive shaft I2 is disposed in a plane parallel to the long axis of the handle Ill.

Mounted upon the free end of the drive shaft I2 is a bevel gear i3 having driving engagement with a second bevel gear II which is formed at 0 one end of a bearing it which has an enlarged head It at its opposite end. A bearing member I! is positioned in the housing H with spaced relation to the bearing member ll, both members It and I1 having the same axis for rotary move- 55 ment in their respective bushings i3 and II. A

helical cutting member 23 is disposed between the members i3 and I1, one end 2i of the member 20 being bent crosswise of the latter and being disposed in a keyway 22 formed diametrically across the head It of the bearing II, the opposite end 23 5 of the member 2|! likewise being bent and disposed in a keyway 25 formed diametrically across the head portion 26 of the bearing ll.

The helical cutting member is enclosed by the concave portion formed in the housing II, and 10 the bight portion 21 of a U-shaped member 23, which is fastened to the housing H by means of threaded members 23 (Fig. 4), in a manner to form a cylindrical space 24 therebetween.

There is formed in the U-shaped member 23 a 13 plurality of elongated slits 30 which extend circumferentially on the bight portion 21 of the member 23, leaving space plates 31 which are engaged in the concavity of the portions 21 by the periphery 32 of the helical member 20. of the plates 31 have a cutting edge 34 for a reason presently to be disclosed.

As is illustrated in Fig. 7 of the drawing, a section through the helical member 20 shows the latter to be a spiraled element 20 having its side 25

walls

33 and 33 tapered from the periphery 32 toward the inner surface 32'.

Formed axially through each of the bearing members l5 and I1 is a cylindrical opening l5 and i1 respectively, through which openings air 30 may circulate and clippings may be removed in a manner to be described presently.

The member 28 is formed of lighter gauge material, and due to its structure the major portion thereof, particularly the

wings

35 and 36 and the 35

edges

31 and 33, are supported by the housing I I. Likewise due to the structure of the member 28, the space plates 3| of the bight portion 21 are rigid and conveniently constitute a face guard as well as forming a part of the shearing implement. 40

In the use of the new shaving device, because of the angle provided by the structure, the handle may be gripped and the surface of the guards 3| moved across the bearded surface being shaved, without obstructing the view had by the user in 5 a mirror or the like. The implement is moved over the face of the user in a direction parallel to the long axis of the slits 30, the convexity of the surface 21 wherein the slits 30 are formed permitting the passage of the bristles through the latter in a relatively erect posture at right angles to the surface being shaved.

The motor imparts -a rotary movement to the drive shaft I2 which, by way of the gears l3l4, imparts a rotation to the bearing II, it being Each 20 noted that by a gear ratio the speed of the bearing l5 and the helical cutter 20 linked thereto, is increased relative to that of the drive shaft l2.

The direction of rotation of the stud or hearing I5 is such that the helix will be urged by centrifugal force and reaction against the guard, thus further assuring close cutting relationship therewith and avoiding the possibility of pulling hairs into the razor, it being further observed in this connection that the guard slots and helix and the cutting movement of the latter are designed to eilect a clean cut and avoid any unpleasant pulling or drawing of hairs into the guard.

The cutter 20 rotates clockwise as seen in Fig. 4, from bottom to top, Figs. 2 and 3, thus causing the elements 2!! to cross the slits 30 from right to left as seen in Figs. 2, 3, and 7. The surface 33 of the elemental sections 29' bear across the space 30 to engage in shearing action with.

the edges 34, and any bristles extended within the space 30 will be sheared by this action.

The speed of the helix 20 will create a swirling of air within the compartment 24 and the spiral of the helix will create a movement of the swirling air from right to left (Fig. 2) whereby the bristles clipped by the shearing surfaces 33-34 will be picked up by the air current and passed out through the opening 15' at the left-hand end of the housing II,

The cover plate 28 may be detached from the housing Ii by the removal of the bolts 29 for the purpose of cleaning the compartment 24, or for removing the cutters 2D. The latter may be accomplished by pressing the cutter 20 toward the left, until the end 23 of the helix is withdrawn from the slot 25 in bearing ll, whereupon the cutter may be removed and likewise the bearing l'l.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:

1. In a shaving implement comprising a handle structure, a bearing structure and a U-shaped cover for the latter, a drive shaft linked at one end thereof to power means within said handle structure, the other end thereof drivingly engaged to a spiraled cutting element, sa d cutting element being adapted to rotate axially in a plane at an angle to said drive shaft and being disposed within a chamber formed between said bearing structure and the bight portion of said U-shaped member, the bight portion having slits formed therein providing plates thereon and bearing against the periphery of said cutting element whereby the leading edges of the latter will cross said slits in shearing action with an edge of said space plates, and an opening formed through said bearing structure on the axis of said spiraled cutting element whereby particles of hair may be removed from the cylindrical chamber.

2. In a dry shave device, a pair of axially spaced revoluble bearings and an axially compressible cutter expanded between said bearings and supportably engaging one of the same at each of its axial ends, said cutter being compressed for removal from said bearings, and means drivingly engaging at least one of said bearings to rotate said cutter.

3. In a device of the class described, a pair of revoluble bearings spaced apart axially, an axially expanding helical cutter having diametric mounting members at its axial ends, said cutter being expanded between said bearings for support on the latter with each of said diametric mounting members engaged in a corresponding one of said bearings to key the cutter for rotation withsaid bearings, means for rotating said cutter, and means providing a stationary shear cooperable with said cutter.

4. In a dry shave implement, a support including a handle, motor means in said handle, a pair of rotatable bearings spaced apart axially on said support and each having a diametric slot in its end facing the other, a helical cutter expanded between said bearings for supporting engagement therewith and having diametric axial end formations engaged in corresponding diametric slots in said bearings to eifect conjoint rotation of the bearings and cutter, said bearings being arranged to dispose the axis of rotation of the cutter at an angle to the major axis of said handle, shaft means driven by said motor and extended at an angle to said axis of the cutter, and means drivingly interconnecting one of said bearings with an axial driving end of said shaft, together with stationary shear means cooperable with said cutter.

5. In a dry shaving implement, spaced bearings mounted for rotation about a common axis, each of said bearings having a diametric slot in its end opposite the other, a revoluble cutting element in the form of a helical spring having portions at each of its axial ends turned in to provide diametrically extending fingers, said spring being mounted for rotation between said bearings with said fingers thereof disposed in said diametric slots in the bearings by expansive action of the spring, a stationary cutting member arranged close against the periphery of said spring and against which said spring cutting element yieldably rotates, and motor means for rotating said cutting element.

6. In adry shaving implement, spaced bearings mounted for rotation about a common axis, each of said bearings having a diametric slot in its end opposite the other, a revoluble cutting element in the form of a helical spring having portions at each of its axial ends turned in to provide diametrically extending fingers, said spring being mounted for rotation between said bearings with said fingers thereof disposed in said diametric slots in the bearings by expansive action of the spring, a stationary cutting member arranged close against the periphery of said spring and against which said spring cutting element yieldably rotates, and motor means having driving connection with one of said bearings for rotating said cutting element.

'I. In a dry shaving implement, spaced bearings mounted for rotation about a common axis, each of said bearings having a diametric slot in its end opposite the other, a revoluble cutting element in the form of a helical spring having portions at each of its axial ends turned in to provide diametrically extending fingers, said spring being mounted for rotation between said bearings with said fingers thereof disposed in said diametric slots in the bearings by expansive action of the spring, a stationary cutting member arranged close against the periphery of said spring rotation of the cutting element and having a free end portion terminating substantially opposite one of said bearing. members, and means drivingly connecting said bearing member and said end portion.

8. In a device of the class described, a helical cutter and mounting means therefor and including a helical spring having end portions turned back to extend diametrically across its axial ends, revoluble bearing members arranged at opposite ends oi the spring and mounted for rotation coaxially with the latter, the oppositely facing or inner axial ends of said bearings being each provided with a diametric slot and said spring being extended between said bearings and fitted around each of the same with said diametric end portions respectively fitted into corresponding diametric slots in the bearings, the convolutions of said spring having peripheral edge portions constituting shearing edges, and a stationary shearing member mounted close against the periphery of said spring for cooperation therewith.

HENRY RUSKIN.