US2462625A - Shaving machine - Google Patents

Description

Feb. 22, 1949. FLORMAN 2,462,625

SHAVING MACHINE Filed May '7, 1945 Patented Feb. 22, 1949 UNITED STATES PATENT OFFICE SHAVING MACIHNE Irving Florman, New York, N. Y.

Application May '7, 1945, Serial No. 592,295

4 Claims. 1

This invention relates to shaving machines and more particularly to that class of devices having relatively movable cutters and known as dry shavers.

The principal object of the invention is to provide a novel and improved shaver of this general type.

More specifically, it is an object of the invention to provide a shaving machine having a shearing head provided with a plurality of separated operative portions of substantially hemispherical configuration, whereby when applied to the face, the irregular or undulatory surfaces cause the skin to assume a contour most conducive to forcing the hair into the shearing openings.

Another object is to provide, in a razor or shaving machine of this type, a novel shearing assembly comprising a dome-like guard or gage plate having perforations therein and adapted to cooperate with a rotary cutting blade disposed beneath the plate and running with proper shearing clearance with the underside of the plate, the blade, of course, being of an arcuate configuration to conform to the concavity of the plate.

A further object of the invention is to provide in a razor or shaving machine of this class, novel cutting blades which cooperate with the guard or gage plate, said blades, in the preferred embodiment of the invention, being circular and freely rotatable on their central axes so that new arcuate portions of the blades are continually being brought into action as the operation proceeds.

Other objects and features of novelty will be apparent from the following specification when read in connection with the accompanying draw-- ings in which certain embodiments of the invention are illustrated by way of example.

In the drawings,

Fig. 1 is a view in side elevation of a shaving instrument embodying the principles of the invention;

Fig. 2 is a top plan view of the shaving head of the instrument showing one form of contact plate or guard;

Fg. 3 is a similar view showing another embodiment of this guard or gage plate;

Fig. i is a top plan view of the shaving head with the gage plate or cover removed;

Fig. 5 is a transverse sectional view taken through the shaving head taken on line 5-5 of Fig. 1;

Fig. 6 is a view of the upper portion of the instrument partly in side elevation and-partly in central vertical section, and on an enlarged scale; and

Fig. 7 is a fragmentar vertical sectional view showing one shaving blade in edgewise position with respect to the observer.

In Figs. 1 and 6 of the drawings, the shaving instrument, designated generally by the reference numeral H! is seen to comprise the body portion H and the shaving head !2. The body portion ii contains the electric motor or other power means for driving the operative parts and is provided at its lower end with wiring connec tions indicated at 13. As is conventional in this type of machine, the casing or housing of the body portion ii may be divided to provide a reiovable cover plate which is secured in position as by means of the screws M.

The driving motor contained within the body portion I i may be of any suitable or conventional type and it is operatively connected with the drive shaft l5 so as to rotate it during the shaving operation.

The inner framework N5 of the body portion of the shaver is surmounted by a circular flanged portion !8 which in turn has a disk l9 secured thereto as by means of the screws 20. Above the disk l3 there is disposed a bearing plate 22 which is provided with a central opening for the drive shaft i5 and a series of circumferentially spaced openings 23 to accommodate the lower ends of the cutting blade shafts 24. Each of these blade-carrying shafts 24 has a pinion 21 secured thereto immediately above the upper surface of the disk or plate 22. A driving pinion 23 secured to the drive shaft i5 is disposed in the same plane as the pinions 21 and is in mesh with each one of them.

The blade-carrying shafts 24 extend upwardly through openings 29 in the upper disk 30 which is secured in spaced relationship with the lower disk 22 by means of the set screws 32 and the spacing bushings or posts 33, best shown in Figs. 5 and 7 of the drawings. The posts or sleeves 33 are of a height slightly greater than the thickness of the pinions 2! and 28 so that the latter may have a good running clearance between the plates 22 and 30. An opening 34 is provided in the upper plate so for the upper end of the main driving shaft l5.

The shafts 24 are split or forked at their upper ends to receive the circular cutting disks 35 which are freely rotated and mounted with respect to the upper ends of the shafts 24 by means of the axles or pintles 36.

A guard or gage plate 40 surmounts the cutting head and is secured to the upper disk or plate 3! as by means of the screws M. The plate 4i! acts as a cover for the upper portion of the shaving head and is provided with cylindrical side walls :23 which are seated in rebbetted edges 44 'ofthe disk 30.

The cover or gage plate 48 is provided with dome-like-ara-ised portions or prctuberances .45,

there being as many :of these protuberances as there are cutting blades 35. These protuberances are preferably hemi-spherical, but Within the broader aspects of the invention may be of any convex configuration. These protuberancesfin the embodiment illustrated in Figs. 1,2, 6 and-'7 of the drawings, are provided with a multiplicity of small openings 46. The inner-surfaces of theprotuberances 45 fit with a fine shearing ,clearance with the upper arcuate edge portions of the blades and it will be readily understood that as'the blades 35 are rapidly rotated about the axes of the shafts 24,any hairs projecting into the openings 46 of the protuberances 45 will be sheared off between the edges of the blades 35 and the inner edges of the openings 46.

In operation the head 'ofthe shaver is passed over the skin surface and the area contacted by the plurality of rounded protuberauces 45 is flexed and kneaded,so to speak, so that each cutting protuberance, cooperates with the others and effectively forces the hairs into the openings 46 to be sheared off.

In Fig. 3 there is shown an embodiment of the shearing or cover plate designated 40' in which the protuberances 45. are provided with very narrow elongated slits beneath which the blades 35 rotate and cooperate to shear the hair entering .the slots. The. slits 46 extend at various angles and thus continually shift the angle of shear .at a given point .on the skin as the shaver progresses across the face.

ince the cutting blades 35 are freely rotatably mounted on the rotating shafts 24, the vibration of thedevice will cause the blades to rotate around the axes of the pintles 35 and thus the effective or active-arcuate cutting portions of thebl ades will be-continually renewed as the operation proceeds. This will double the wear of the blades and prolong, the life of the shaver.

The.- cutting blades, within the broader aspects of they invention, may be drivenlby any suitable means .whether mechanical or electrical, and the number of spherical cutting elements on the cutting head may be varied from two up to any number conveniently applicable to the surface of the cutting head of the razor..

Various changes and modifications may be made in-the embodiments illustrated-and described herein without depart-ing from the scope of the-invention as definedby the following claims.

Having thus described the invention, 'whatis claimed as new and desired 'to be secured by LettersxPa'tent is:

1. A shaving machine of the class described which comprises a shearing couple consisting of a dome-like plate the convex surface of which is adapted to contact the surface to be shaved, said plate being of a generally spherical configuration, a completely circular shearing blade rotatably mounted beneath said plate whereby the edge of said blade substantially defines a great circle of the sphere of which the plate is a part, and means for freely rotatably mounting said circular blade for rotation aboutits own aXis so asto continually renew the effective cutting arc of its periphery which cooperates with the concavity of the plate, during operation.

2. In a shaving machine of the class described having a shearing head a cutting mechanism comprising a. plurality of rotatable cutting blades displaced radially from the center of and in shearing ing therefrom, at least one opening in said protuberance through which a hair can pass, the convex side of said protuberance being adapted to engage the surface to be shaved and the concave-side being adapted to receive a cutter, means haunting a circular cutter for rotation as an arc of revolution for and in shearing engagement with said concave side, and further means for mounting said cutter for free rotation about its own axls.

4. A shaving machine of the class described having a shearing. head including a cutter plate provided with a plurality of concavo-convex embossments with openings therethrough, the convex sides of said embossments being adapted to engage the surface to be shaved, a plurality of rotatable cutting blades displaced radially from the center of said head, each of said blades being disposed in shear cutting relationship with the concave side of one of said embossments, a plurality of rotatable shafts carrying said blades, means mounting each blade for free rotation upon its axis on its respective shaft, a centrally disposed drive shaft, and means for driving said rotatable shafts from said drive shaft.

IRVING FLORMAN.

REFERENCES CITED The following references are of record in the file of this patent:

STATES PATENTS Number Name Date 2,164,425 Rand July 4, 1939 2,242,752 Meyer May 20, 1941 2,291,852 Weatherford Aug. 4, 1942 2,339,831 Anderson Jan. 25, 1944

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