US2269875A

US2269875A - Power driven razor

Info

Publication number: US2269875A
Application number: US206969A
Authority: US
Inventors: Huntington Howard
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-05-10
Filing date: 1938-05-10
Publication date: 1942-01-13
Anticipated expiration: 1959-01-13

Description

Jan. 13, 1942. H. HUNTINGTON 2,269,875

POWER DRIVEN RAZOR Filed May 10, 1938 INVENTOR (04mm fla/vm/sn/v Patented Jan. 13, 1942 UNITED- STATES PATENT OFFICE f rowan 23; mzon I Howard Huntington, Stratford, Conn. Application May 10,1938, Serial No. 2 os,9sc-

. 3 Claims. This invention relates'to power driven razors and particularly to a type in which the hair cutting element is rotated within a inder.

Its principal object is' to enable the user in a single device to shave rapidly and closely regardperforated cylless of the condition of his beard. It provides for ease of handling during the shaving operation,

freedom from vibration, long life and ready accessibility to all bearded surfaces of the face.

The construction is such that the cutting toolis driven directly by the motor in the handle. The handle may be ellipsoid in shape. The

cutting head isof tubular formation,- perforated and in alignment with the axis of the handle. The cutting tool contacts its inner surface which, preferably, is eccentric to its outer surface. Thus long hairs may thus be more readily clipped by holding the thicker walls to the face; the shorter hairs, by using the thinner side. On the thicker walls of the head, especially, the holes are preferably of larger outside than inside diameter or di mension, to permit the hairs more readily to approach the smaller size openings at the inner surface.

The housing has a rounded end. This enables theuser to comfortably hold the razor to portionsof his face that would not otherwise be so accessible. The entire or greater part of the surface of the cylinder and a part of itsrounded end are perforated. The holes are preferably in staggered array thus presenting in a given stroke the maximum opportunity for cutting. To provide for long life the cutting portion of the rotating member may be an elongated blade fitting a longitudinal slot in the shaft. Two or more such blades may be provided. Thus, when the cutting edge of the blade or the inner wall of the cylinder I wears, the blade slips outwardly in its slot to maintain th desired contact therebetween. Such a blade may also be arranged to slip longitudinally to maintain contact at the rounded end.

In the drawing Fig. l is a general view of the head 5 of cylindrical shape. There is preferably one opening 6, or more, for the egress of clipped hairs. Y

Over thegreater part of the head a multiplicity of perforations provide for the entrance of the hairs to .be cut. The outer end 8 is rounded and the perforated area includes a portion of such .end. As shown the perforations are countersunk on the outside of the head or are otherwise made larger in dimension than the openings 9 to theg The blades may lie in longitudinal slots IQ of an integral or direct coupled extension ll of the shaft 3. The lower ends I2 of such blades are bevelled to engage corresponding bevelled surfaces it at the ends of the slots so that under centrifugal force the blades not only tend to move radially in the slots to press against the inner surface of the cylindrical part of the cutting head but also press longitudinally against the rounded end. A further force to press the blades laterallymay be supplied by springs ifi-i i extending laterally through holes in the shaft H. The motor shaft 3, Fig. 2, drives the blade holding extension H by the engagement of a. tongue i5 on the former with a corresponding slot in the latter. Both the motor shaft 3 and the extension ll may be carried in ball bearing i'i. The motor 2 may be of the ordinary D. C.-A. 'C. type and controlled by a switch it at thebase of the handle. This switch has a flat bottom so that the razor, as a whole, will stand uprlght,' when not in use. When in use, a plug i9, Fig.1,

is inserted in the switch bottom to provide for an electric energy source through a conductor cord 26.

I claim:

1-. In a razor the combination of a handle, a

perforated head attached thereto havingatubular section and an end section, a power shaft within the head having a longitudinal slot, and a blade conforming to said head carried by said shaft within said slot and radially slidable therein into contact with the tubular section of said head. one end of said blade "and the shaft at the corresponding end of said slot having complemental bevelled surfaces adapted under the iniiuenee of centrifugal force to cam the blade longitudinally into engagement with the end section 0! said head.

2. In a razor the combination of a handle, a perforated head attached thereto having a tubuiar section and an end section, a blade within said head, and a power shaft having a bevel ended slot carrying said blade, said blade being movable radially in said slot under centrifugal force into contact with the tubular section of said head and terminating at one end in a camming mn'lace ccmplementinathe beveled end of said clot and adapted thereby to be pressed simulcombined surfaces.

HOWARD HUNTINGTON.