US2105855A

US2105855A - Dry shaver

Info

Publication number: US2105855A
Application number: US124730A
Authority: US
Inventors: Caise Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-02-08
Filing date: 1937-02-08
Publication date: 1938-01-18
Anticipated expiration: 1955-01-18

Description

Patented lian. i8, i935 DRY SEAVEB Charles Caise, Brooklyn, N. Y. Application February 8, 1937, Serial No. 124,730

16 claims. (C1. sci- 43) My invention relates to the art of safety razors and more particularly to those known as dry shavers.

Primarily the invention has for an object to provide a dry shave razor of a simple, 4inexpensive construction by the use of which a close shave may be had without danger of cutting oneself.

Further, it is an object to provide a motor driven razor the cutting edge ofthe blade of which is held parallel to the skin and outer con" tour of the razor, a position in which the razor cannot chafe the skin.

Further, it is an object to provide a razor of the type stated in which the cutting edge of the blade is prevented from injuring the skin by means of a. very ne non-corrosive wire grating substantially paralleling the cutting edge of the blade and extending at right angles to the same.

Other objects willin part be obvious and in part be hereinafter set forth. A

To the attainment of the aforesaid objects and ends the invention further resides in those novel features of construction, combination and arrangement of parts which will be hereinafter rst fully described and then specifically pointed out in the appended claims, reference being had to the accompanying drawing in which s Fig. 1 is a magnified view in front elevation of a razor embodying vthe invention, parts being broken away.

Fig. 2 is a vertical section on the line 2-2 of Fig. '1.

Fig. 3 is a section on the line 3-3 of Fig. 2.

Fig. 4 is a top plan view, the cover being removed.

Fig. 5 is a perspective view on a of the blade carrier. l

Fig. 6 is a top plan view, on a reduced scale, of the guard plate head.

In the drawing in which like numbers of reference indicate like parts in all the figures, l represents the handle in which a suitable. electric rotary vmotor (not shown) drives a shaft 3 having an eccentric pin '4. The handle I is threaded at 2 to receive the threaded end of the tubular shank 5 in whose hollow 6 the blade reduced scale moving arm 25 is located. The' arm 25 has a.

concentric recess to receive the eccentric pin A whereby rotation of shaft 3 imparts a rotary motion to the lower end of arm 25. The shank 5 carries the guard plate head 1 which on its front and back sides i's provided with trough like passages 8 containing grating bars 9 spaced relatively a substantial distance apart. The head 1 has a pocket I0 in its top and is provided with Vblade guide surfaces I I over which the thin ilexible wafer blade 30 projects.

'I'he side ends I2 of the head 1 extend upwardly a suitable distance to support the cover I5.

Slots I3 in the head 1 serve to yreceive the wings 26 depending from the underside of the blade carrier plate 24.

` The cover I5 includes veryne wire gratings I1 and turned under portions Iii the former extending over the openings 8 while the latter clip around the edges I4. of the head 1 (see Figs.. 1 and 2).

Thexcover I5 is held in place by any suitable means, as for instance spring ngers I8 and lugs I9.

The blade carrier plate 24 has the arm 25 hereinbefore referred to and also the wings 26, the

latter having pivot bearing holes 21 to receive the bearing portions 28 of pivot pins screwed at 29 into the'ends vI2 of the head 1.

The blade 30 may be of the well known wafer type (Gillette, Probak, etc.) and is slotted to it over the rib or protuberance 22. 'Ihe blade is held down, in itsvbowed shape, on the plate 24 by means of a blade pressing cap plate 20 (also slotted at `2| to t overthe member 22) and screws and washers 23 or in any other suitable way. x

The shapes of the various part's are so designed that the cutting edges of the blade will lie approximately parallel to the" gratings I1 during their cutting .movements, and close to those gratings I1.

The razor is used in the same way as the well known Gillette razor.

The rotary motion of shaft 3 is converted into motion in the direction of the two arrows a and b in Fig. 4, i. e., a left and right movement (effecting a draw cut) and a front and back movement (effectingV a chopping cut); the front and backmovement of the .blade is very slight in practice, about one-sixteenth of an inch or so.V due to the leverage between pivotal axis 28-28 and the top and bottom of the member 25, while the movement above such axis is considerably less (about half as much).

thought that the construction, operation and advantages of the invention will be clear to those skilled in the art.

While I have herein described the preferred embodiment of the invention, it should be understood that changes in the details of construction and form ofthe parts may be made without departing from the scope of the invention as recited in the appended claims.

What I claim is:

1. In a dry shaver, a guard plate head having a tubular shank, a blade carrier, a wafer blade carried by said carrier and having a cutting edge, means pivotally mounting said carrier on an axis parallel to the cutting edge of the blade, said blade carrier including an arm located in said shank and a carrier plate located over said guard plate head, means for rocking i said blade carrier on its pivot and reciprocating it along its pivot axis, and a cove'r mounted on said guard plate over said pocket.

2. In a dry shaver, a guard plate head having a tubular shank, a blade carrier, a wafer blade carried by said carrier and having a cutting edge, means pivotally mounting said carrier on an axis parallel to the cutting edge of the blade, said blade carrier including an arm. lo-

cated in said shank and a carrier plate located over said guard plate head, means for. rocking said blade carrier on its pivot and reciprocating it along its pivot axis, a cover mounted on said guard plate over said pocket, and a grid over the cutting edges of the blade.

3. In a dry shaver, a guard plate head having a tubular shank, a blade carrier, a. wafer blade carried by said carrier and having a cutting edge, means pivotally mounting said carrier on an axis parallel to the cutting edge of the blade, said blade carrier including an arm located in said shank and a carrier plate located over said guard plate head, means for rocking said blade carrier on its pivot and reciprocating it along its pivot axis, a cover mounted on said guard plate over said pocket, said blade having two parallel cutting edges, and grids over said cutting edges, said guard plate having hair discharge openings below said cutting edges.

4. In a dry shaver, a guard plate head ofA spread U-shape in end view having a tubular shank, and having blade guide surfaces, a blade carrier having a blade carrier plate located over said guard plate head and having an arm projecting into said tubular shank, a, handle to which said shank is attached, a rotary shaft in the handle having a cam or eccentric-like connection with said arm, and means to mount said blade carrier on said guard plate head for movement back and forth in two paths at right angles to one another, vand a thin Wafer blade secured to said blade carrier and shaped so that the cutting edges or" the blade will lie substantially parallel with the face when the instrument is in operation.

5. In a dry shaver, a guard plate head vof spread U-shape in end View having a tubular shank, and having blade guide surfaces, a blade carrier having a blade carrier plate located over said guard plate head and having an arm projecting into said tubular shank, a handle to which said shank is attached, a rotary shaft in the handle having a cam or eccentric-like connection with said arm, means to mount said blade carrier o n said-guard plate head for movement back and forth in two paths at right angles to one another, a thin wafer blade secured to said blade the same along said axis;

7. In a dry shaver, in combination, a guard plate head, a blade carrier, a wafer blade having a cutting edge and being carried by said carrier, means to mount said carrier on said head to turn on an axis located parallel to said cutting edge and for movement along said axis rectilinearly, and means to effect simultaneous oscillation of said carrier about said axis and reciprocation of said carrier along said axis, thereby to impart a combined draw cut and chop cut to said blade.

8. In a dry shaver, a guard plate head, a blade carrier, a wafer blade having two parallel cutting edges and being carried by said carrier, a cover plate mounted over said carrier and blade and having provisions to leave the cutting edges of said blade exposed for action, means to mount said carrier on said head to turn on an axis parallel to said cutting edges and for movement along said axis, and means to eiect oscillation of said carrier about said axis and to reciprocate said carrier along said axis.

9. In a dry shaver, a guard plate head having a shank, a blade carrier mounted on said head, a wafer blade carried by said carrier, means to impart a combined draw cut and chop cut to said blade, said means comprising a rotary shaft, an arm carried by said blade carrier within a space in said shank, an eccentric cc'lnnection between said shaft and said arm in virtue of which rotary motion of the shaft will be imparted to said arm, and means to mount said blade carrier in virtue of which the blade will be given an orbital movement. i

10. In a dry shaver, a guard plate head having a shank, a blade carriermounted on said head, a wafer blade carried by said carrier, means to impart a combined draw cut and chop cut to said blade, said means comprising a rotary shaft, an arm carried by said blade carrier within a space in said shank, an eccentric connection be- `tween said shaft and said arm in virtue of which rotary motion of the shaft will be imparted to said arm, andmeans to mount said blade carrier in virtue of which the blade will be given a back and forth movement along two paths, one in a direction transverse of the other.

11. In a dry shaver, a guard plate head having a shank, a blade carrier mounted on said head, a wafer blade carried by said carrier, means to impart a combined draw cut and chop cut to said blade, said means comprising a rotary shaft, an arm carried by said blade carrier within a space in said shank, an eccentric connection between said shaft and said arm in virtue of which rotary motion of the shaft will be imparted to said arm., and means to mount said blade carrier in virtue of which the blade will be given 'a reciprocating movement along an axis and an oscillating movement on said axis as a pivot.

12. In a dry shaver, a guard plate head of I having a tubular shank beneath and a pocket in its upper face, said head having passages for cut hair to fall through, a razor blade carrier mounted in the pocket of said head and having an arm located in said tubular shank, a blade on said carrier, and means for imparting to said blade carrier a combined oscillating motion around an axis and a reciprocating motion along said axis.

13. In a dry shaver, a guard plate head of spread inverted U-shape in end elevation and having a tubular shank beneath and a pocket in its upper face, said head having passages for cut hair to fall through, a razor blade carrier mounted in the pocket of said head and having an arm located in said tubular shank, a blade on said carrier, and means for imparting to said blade carrier a combined oscillating motion around an axis and a reciprocating motion along said axis, said blade comprising a wafer having parallel cutting edges projecting partly across said passages.

14. In a dry shaver, a guard plate head of spread inverted U-shape in end elevation and having a tubular shank beneath and a pocket in its upper face, said head having passages for cut hair to fall through, a razor blade carrier mounted in the pocket of said head and having an arm located in said tubular shank, a blade on said carrier, means for imparting to said blade carrier a combined oscillating motion around an axis and a reciprocating motion along said axis, said blade comprising a wafer having parallel cutting edges projecting partly across said passages, and fine grids over said blade edges and said passages.

15. In a dry shaver, a guard plate head of spread inverted U-shape in end elevation and having a tubular shank beneath and a pocket in its upper face, said head having passages for ,cut hair to fall through, a razor blade carrier mounted in the pocket of said head and having an arm located in said tubular shank, a blade on said carrier, means for imparting to said blade carrier a combined oscillating motion around an axis and a reciprocating motion along said axis, said blade comprising a wafer having parallel cutting edges projecting partly across said passages, and fine grids over said blade edges and said passages, said grids lying approximately parallel to and adjacent the face of the blade at the cutting edges.

16. In a. dry shaver; the combination with a guard plate head having a shank, a blade carrier, a wafer blade havinga cutting edge and carried by said carrier, of means to mount said carrier removably on said head and means to move said blade carrier bodily simultaneously in two directions, one direction being parallel to the edge of the blade to produce a draw cut and the other direction being at right angles to the edge of the blade to produce a chop cut, thereby.

giving a combined draw cut and chop cut movement to the blade.

` CHARLES CAISE.