US2219090A - Power-operated safety razor - Google Patents

Description

Oct. 22, 1940. A. HENDERSON 2,219,090

POWER OPERATED SAFETY RAZOR Filed July 20, 1938 ALLEN HEN ons ON Patented Oct. 22, 1940 UNITED STATES PATENT OFFICE 2,219,090 POWER-OPERATED SAFETY RAZOR I Allen Henderson, Akron, Ohio Application July 20, 1938, Serial N0. 220,25!

This invention safety razors.

The general purpose of the invention is to provide a power-operated safety razor, comprising a head in which is a cutting element, there being ari improved cutting action between cutting element and the head.

A further purpose of the invention is to provide in such a razor, a blower for maintaining the cutting head cool and for blowing away the cut hair, as the shaver is being used.

A furtherobject of the invention is to provide in the cutter a removable cutting-edged blade, the cutter head being removable from the razor, so that the cutting element can be withdrawn and the blade changed so that sharp blades can be substituted for dull blades. c

The foregoing and other objects of the invention are attained in the shaver illustrated in the accompanying drawing and described below. It is to be understood that the invention is not limited to the specific form thereof shown and described.

- Of the accompanying drawing:

Figure 1 is a plan view of a shaver embody ing the invention.

\ Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is an inside end view of the outer end of the cutter head.

Figure 4 is a section on line l4 of Figure 2.

Figure 5 is a section on line 5-5 of Figure 2.

Figure 6 is a section on line 66 of Figure 2.

Figure 7 is a section on line of Figure 2.

Figure 8 is a view showing the cutting element removed and showing how a blade may be removed from the cutting element to be replaced.

Referring to the drawing, the numeral l0 designates a cutting head which is preferably of cylindrical shape and which has therein groups of apertures H, II placed preferably in angular rows with angular spaces l2, l2 between the groups to provide an effective combing action tending to cause the hairs on the face to project into the apertures II to be cut off. At the outer end of the cylindrical head Hi, there is a fixed cross-piece E3 on which is arranged at the center a fixed trunnion H on which is journalied one end of a sleeve l5 which carries a spider l5 (see Figure 4) at the outer end of the cutter so as to be rotatable therewith. This spider may be formed with a set of blades l6, IE to provide a blower fan. At its thereon a spider H. The spiders I6 and I1 provide supports in which the ends of blade mountings l8, I8 may be Journalled. The blade mountrelates to power-operated inner end sleeve l5 has 4 claimsl (Cl. 30-43) holders I9. accordance with .one purpose of this invention, the blades are to have a cutting edge so as to have a cutting acmay be remov- 6 tion on the hairs as distinguished froma mere I0 shearing clipper-like action as heretofore used.

Sleeve I5 is designed to be removably slipped on 'a square shaft 22 which is an extension of a motor shaft 23 arranged to be driven in any suitable manner handle 24, as will be'u'nderstood by those skilled in the art. Sleeve I5 is deformed as shown at Figures 2, 5 and 8) whereby sleeve i5 is squared at this point so as to be in such engagement thereby. The sleeve [5, however, is slidable on shaft 22 and is removable from said shaft as will be described.

Holders [9 are so arranged on the spiders l6 and if as shown in rect the blades 2! into contact with the inside of the cylindrical head ill in the direction of rotation of the shaft 22 and in order to hold the blades outwardly against the inside of the cylindrical head so passing contact with the perforated portion of the head to cut the hairs off as they project through the openings H, springs 25, 25 are provided,these springs normally serving to swing blades 2! thereby holding'them in contact with the inside of the cylindrical head as shown.

vIt is preferable to impart an axial oscillatory or reciprocatory movement to the rotary cutter by a motor housed in the shaver 15 with shaft 22 as to be rotated at) outwardly as shown in Figure 5 and 38 during the shaving operation to produce a saw- 40 l5, and 5 element 28 permits the spring 26 to move the cutter-slightly outwardly toward the end of the cutter head. As the depressions at [5* ride out of engagement with the cam 28, the'sleeve l5 and cutters will of course be moved backwardly against the action of springs 26 and thus the 5 as to have a cutting action in 30 Q 2 cutter will be given a slightoscillatory or reciprocatory movement axially while it is being rotated, which effectively provides a saw-like as well as shearing cutting action at the apertures II. The inner'end of sleeve I5 is open so that the blowing action provided by the blades IE on the spider IE will blow hairs from the inside the cutter head out of the inner end of the cutter head. This blowing action, of course/also serves to cool the razor head. The head Ill may be mounted on the razor handle 24 in cooperative relation with the shaft 22, 23 by means of the brackets 29, 29, which may be connected to a rectangular tube of metal 29, fitted into a correspondingly shaped socket 30 in the handle 24, the tube 29 may be removably secured to the handle 24 by set screw 3|.

In operation, the parts will be assembled as shown 'and the. motor in the handle 24 will be continuously driven as will belunderstood, thus rotating the cutter inthe head In and also giving slight reciprocatory or oscillatory movement to the cutter in the axial direction providing ajsawlike action aswell as arotary cutting action in the cutter head. The apertured portion of the head in will be applied against the skin to be shaved and it will be moved Wand fro over'the skin in the usual way. remove and replace blades the set screw 3! is loosened whereby the head I'll may be pulled off the handle 2'4 along with the rotary cutting element, the'sleeve 15 of which slides off the shaft 22. The cutter element can then be dropped out of the inner end of the head in, the blades removed and replaced as indicated in Figure 8 and then the parts can be re-assembledi as shown by first putting the cutter in the head and then slipping the head with the cutter back over the shaft 22 and attaching the head to the handle.

It will be apparent from the foregoing that a highly improved electric shaver has been provided by the invention. Obviously, modifications thereof may be adopted without departing from the spirit thereof or the scope of the appended claims.

What is claimed is:

1. A power-operated shaver comprising a hol- When itis desired to low cylindrical head, having a portion thereof apertured for application to a surface to be shaved and a rotary cutter in said head, one or more blades with sharp cutting edges carried by said rotary cutter and means for holding sides of the edges of said blades in contact with said casing at all times throughout rotation thereof to cause,

cutting edges of the blades to pass through hairs projecting into said casing through the apertures thereof, and means for simultaneously rotating and axially oscillating or reciprocating said outter inside of said head in association with said apertures.

2. A power-operated shaver comprising a hollow cylindrical head apertured for application to a surface to be shaved, and a rotary cutter in said head, one or more sharp blades carried by said cutter and means for yieldingly urging said blades outwardly whereby sides of the edges of said blades are urged into contact with the inside of said head to present sharp edges of said blades to hairs extending into said head.

3. A power-operated shaver comprising a hollow cylindrical head having hair-receiving apertures, a rotary cutter in said head, blade holders carried by said cutter, and cutting edged blades i removably mounted in said holders, and means for holding sides of said cutting edges in contact with -said head at all times throughout rotation of said cutter to present the cutting edges of said blades to hairs extending into said head, said cutter being removable from said head whereby said blades c an be removed and replaced.

4. A power-operated shaver comprising a hollow cylindrical head apertured for application to a surface to be shaved and a rotary cutter therein, said cutter having one or more sharpened or cutting-edged blades therein, means for rotating saidcutter and means for holding the sides of the cutting edges of said blades in contact with the inside of the head all the while said cutter is rotating and throughout rotation thereof to present the cutting edges of said blades to hairs extending into the apertured head.

ALLEN HENDERSON.

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