US2238148A

US2238148A - Shaver

Info

Publication number: US2238148A
Application number: US229687A
Authority: US
Inventors: Oswald F Zahn
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-09-13
Filing date: 1938-09-13
Publication date: 1941-04-15
Anticipated expiration: 1958-04-15

Description

ril 15, 1941" O. F. mm mm SHAVER Filed Sept. 13, 1938 IE l INVENTOR.

BY 05am F1 Z mm @aW W ATTORNEY.

Apr. 15, 1941 UNITED (STATES PATENT OFFICE smvEa v Oswald F. Zahn, San Diego, Calif. Application September 13, 1938, Serial No. 229,687

' gel. 30-43) 8 Claims.

ll/Iy invention relates to shavers for shaving hair and the objects of my invention are:

First, to provide a shaver with vacuum means in connection therewith for drawing the skin and hair into cooperative relation with the shearing blade of the shaver so that an extremely close shave may be attained;

Second, to provide a vacuum operated means for causing a vacuum in connection with the shaver head and shaver blade for drawing the skin into curved form in close relation with the shaver blade and holding the same in said curved close relation while the shaving is edected;

Third, to provide a shaver head that is so shaped and constructed that a vacuum may be eniciently and effectively applied thereto for drawing the skin into close relation with the shaver blade during the shaving operation;

Fourth, to provide a shaver head and shaver blade and vacuum means in cooperative relation therewith that tend to raise the hair outwardly for close cutting while operating the shaver;

Fifth, to provide a shaver of this class in which i the vacuum means may be utilized for the pur- Eight, to provide a shaver of this class whichis very simple and economical of construction, easy to operate, easy to clean, emcient in its ac tion and while will not readily deteriorate or get out of order.

With these and other objects in view as will appear hereinafter, my invention consists of certain novel features of construction, combination, and arrangement oi parts and portions as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawing and to the characters of reference thereon which form a part of this application in which:

Figure l is a side elevational view of my shaver showing the body and vacuum bulb tube fragmentarily; Fig. 2 is a bottom view of a fragmentary portion thereof; Fig. 3 is an enlarged fragmentary sectional view taken from the line l---t of Fig. 2 and showing some of the parts in elevation to facilitate the illustration: Fig. i is a fragmentary sectional view taken from the line t-d of Fig. 3 showing some of the parts in elevation to facilitate the illustration; and Fig. 5 is 2. diagrammatic view showing the application of the shaver head to the skin and hair with the application of the vacuum showing the relation of the hair with the skin before, during and after the shaver passing over the skln and the shape of extended tubular portion the'skin relative to the shaver head during the shaving operation.

Similar characters of reference refer to similar parts and portions throughout the several views of the drawing:

The shaver head i, shaver blade 2, drive shaft 3, journal member I, vacuum bulb 5, and body member 6 constitute the principal parts and portions of my shaver. v

The shaver head i is provided at its face engaging side with an elongated concave-convex portion la, leaving side edge face engaging portions in and lo, and end edge engaging portions id and le, all of said edges being on the same plane. This member i is relatively thin and provided with a plurality of holes if therethrough and extending upwardly and outwardly from these edges lb to ie inclusive are the side mornhers is and in and end members it and i7 forming an upwardly tapered rectangular shaped upper end into which is secured the body member ii as shown in Fig. l of the drawing, thus providing a hollow head member i.

ilommunicating with the side member in is an it: over which is stretched the one end oi. a tube be which connects at its opposite ends with a bulb b which is hollow and without any openings therein so that tall air passing in and out of the bulb i must pass til through the openings if. Positioned on the elongated convex surface of the portion to of the shaver head i and reciprocally mounted longitudinally thereon is the shaver blade i, which is provided with an elongated curved surface conforming to the convex surface of the portion in andadapted to reciprocate thereon in engagement with the portion is. This portion l is provided with a plurality of holes to therein conforming substantially with the holes 11 in the portion la. it is provided with a central lug lib which is provided with a central recess to therein in which is mounted the eccentric end to of the the blade member ll longitudinally on the surface ,of the portion is of the shaver head I]. This shaft 3 may be connected with any power producing mechanism such as a motor, air compressor or the like for mechanically or electrically operating the blade 2, the motor not shown.

The shaft 3 is mounted in a journal member t whichis provided with packing la to form a substantially tight joint around the shaft 3. This journal member I is supported by means of a partition 411 secured to the inner side walls of the shaver head I slightly above the tubular member lb and forms an air tight partition in said shaver head I and confines the air and vacuum in the small space below the partition 4b as shown best in Fig. 3 of the drawing.

The operation of my shaver is substantially as follows: Power is applied to the shaft 3 for revolving the same by any power producing mechanism. The bulb 5 is compressed in the hand of the operator and the shaver head is placed against the skin to be shaved, the edges face of the skin and the blade 2 reciprocated over the portion I a by the revolution of the shaft 3,

receiving openings therein, all of which are spaced I shaver operating mechanism communicating Y with the interior of the shaver head.

the skin being drawn against the concave side of the member I and the hair drawn through the holes I] and 2a. where it is sheared by the reciprocation of the blade 2 over the portion la. In Fig. 5 is shown a diagrammatic view of the position of the skin during the shaving operation, the direction of the shaver movement being shown by the arrow in Fig. 5. It will be noted that the skin is drawn tightly in substantially convex outer surface form against the concave under surface of the portion la which tends to raise the hairs upwardly out of the skin as shown in Fig. 5 at the middle and they are cut off while in this projected position so that after the shaver has passed over, their ends are substantially below the surface of the skin as shown at the right in Fig. 5 of the drawing. It being noted that not only are the hairs raised outwardly as shown in Fig. 5 of the drawing, but at the same time as the hairs enter the cutting openings, they are drawn still farther out of the skin.

Though I have shown and described a partic ular construction, combination and arrangement of parts and portions, I do not wish to be limited to this particular construction, combination and arrangement, but desire to include in the scope of my invention, the construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Pat'- ent is: I

1. In a shaver of the class described, the combination of a shaver head provided with an elongated concave portion with a' substantially rectangular face engaging edge provided with hair receiving openings therein, all of which are spaced inwardly from said edge and said shaver head being whollyair tight surrounding said openings and edge and a shaver blade shiftably mounted in contact with the inner side of said concave portion.

2. In a shaver of the class described, the combination of a shaver head provided with an elongated concave portion with a substantially rectangular face engaging edge provided with hair receiving openings therein, all of which are spaced inwardly from said edge and said shaver head being wholly air tight surrounding said openings and edge, a shaver blade shiftably mounted in contact with the inner side of saidv concave portion, and expandable vacuum means independent of the operating means of said shaver communicating with the interior of said shaver head.

3. In a shaver of the class described, the combination of a shaver head provided with an elongated concave portion with a substantially rectangular face engaging edge provided with hair 4. In a shaver of the classdescribed, the combination of a shaver head provided with an elongated concave portion with a substantially rec-i tangular face engaging edge provided with hair receiving openings therein, all of which are spacedinwardly from said edge and said shaver 'head being wholly air tight surrounding said openings and edge, a shaver blade shiftably mounted in contact with the inner side of said concave portion, said shaver head being entirely enclosed and air tight except for the hair receiving openings therein and expandable vacuum means operated independently of the shaver operating mechanism communicating with the interior of the enclosed portion of said shaver head.

5. In a shaver of the class described, the combination of a shaver head provided with an elongated concave portion with a substantially rec tangular face engaging edge provided with hair receiving openings therein, all of which are spaced inwardly from said edge, said shaver head being wholly air tight surrounding said openings and edge, a shaver blade shiftably mounted in contact with the inner side of said concave portion, and a resilient vacuum bulb communicating with the interior of said shaver head, said resilient vacuum bulb being entirely closed except for its tube connection.

6. In a shaver of the class described, the combination oi a shaver head provided with an elongated concave portion with a substantially rectangular face engaging edge, which face engaging edge is wholly on substantially the same plane, said concave portion provided with hair receiving openings therein, all of which are spaced inwardly from said edge and said shaver head being wholly air tight surrounding said openings and edge and a shaver blade shiftably mounted in contact with the inner side of said concave portion.

7. In a shaver of the class described, the combination of a shaver head provided with concave portion with a face engaging edge provided with hair receiving openings therein, all of which are spaced inwardly from said edge and said shaver head being wholly air tight surrounding said openings and edge, a shaver blade shiftably mounted in contact with the inner side of said concave portion, and expandable vacuum means independent of the operating means of said shaver communicating with the interior of said shaver head.

8. In a shaver of the class described, the combination of a shaver head provided with concave portion with a face engaging edge provided with hair receiving openings therein, all of which are spaced inwardly from said edge, said shaver head being wholly air tight surrounding said openings and edge, a shaver blade shiftably mounted in contact with the inner side of said concave portion, a resilient vacuum bulb communicating with the interior of said shaver head, saidresilient vacuum bulb being entirely closed except for its tube connection.

OSWALD F. ZAHN.