US2953851A - Shaving honing unit - Google Patents

Description

Sept. 27, 1960 R. R. WHEELER SHAVING norms UNIT Filed July 5, 1957 v INVENTOR. RAYMOND 2. \dHeeLEz mm ATTO 2H E K$ Unite SHAVING HONING UNIT Raymond R. Wheeler, Chinook, Mont. (114' 18th St. 5., Great Falls, Mont.)

The present invention relates generally to a shaver having a head in which a blade with cutting edges rotates over a slotted hair guide, and specifically to a honing unit for such a shaver.

An object of the present invention is to provide a honing unit which lends itself to ready honing of the blade cutting edges of a shaver.

Another object of the present invention is to provide a honing unit which lends itself to the ready honing of the hair guide of a shaver over which rotates the blade cutting edges of the shaver.

A further object of the present invention is to provide a shaver honing unit which is of simple structure, one easily installed within the shaver head and as easily removed, one inexpensive to manufacture, and one which is highly eflective in action.

These and other objects and advantages of the present invention will be fully apparent from the following description when taken in connection with the annexed drawing, in which:

Figure 1 is an isometric view of a shaver having dual cutting heads;

Figure 2 is a sectional view on an enlarged scale taken on the line 22 of Figure 1, showing one of the cutting heads with the honing element of the present invention installed therein;

Figure 4 is a sectional view taken on the line 3-3 of Figure 2;

Figure 4 is a fragmentary sectional view on an enlarged scale taken on the line 44 of Figure 2, showing the honing element in a position for sharpening the cutting edges of the blades;

Figure 5 is a fragmentary sectional view similar to Figure 4, showing the honing element in the position for sharpening the flange or hair guide of the shaver head; and

Figure 6 is an isometric view of the honing element removed from the shaver head.

Referring in greater detail to the drawing in which like numerals indicate like parts throughout the several views, the honing unit, according to the present invention, is for use in combination with a mechanism adapted to shave and designated generally by the reference numeral 10, having a housing 12 open at one end and a rotatable shaft 14 positioned within the housing and having one end adjacent the housing open end. The mechanism has a hub 16 secured to the adjacent end of the shaft 14 for rotation with the latter and a plurality of spokes 18 project in spaced relation from the hub 16, each of the spokes 18 having on ,the free end thereof a cutting edge, as at 20 in Figures 4 and 5.

The mechanism 10 includes a circular hollow head 22 open at one end and closed at the other end, and positioned on the mechanism 10, so that the open end is adjacent the open end of the housing 12 with the closed end of the head 22 remote from the open end of the housing 12 and with the wall 24 of the head 22 surrounding the hub 16 and the spokes 18. Interlocking means,

States Patent if ice Patented Sept. 27,. 1960 as at 26 in Figure 2, embodying a shoulder and a lip. on the head and housing, respectively, is provided for detachably securing the open end of the head 22 to the open end of the housing 12. An annular shell 28 projects inwardly of the closed end of the head 22 and is spaced from the wall 24. A disc 30 closes the one end of the shell 28 remote from the end of the head 22 opposite to thev open end thereof. An annular flange 32 extends about the shell 28 adjacent the end of the latter remote from the disc 30 and has its periphery secured to the adjacent part of the wall 24 of the head 22. The flange is provided with a plurality of slots 34 arranged in spaced relation therearound. r a

The honing unit is designated generally by the reference numeral 36 and comprises a flat base 38 shaped to a ring and fabricated of resilient material, such as rubber, plastic, or the like, and a second or another ring 40 is conformably shaped to the base ring 38 and fabricated of an abrading and non-resilient material, such as cast oil stone, commonly used for the sharpening of razor cutting edges. The ring 40 is superimposed upon the base ring 38 and is bound to the base ring 38 by suitable cement.

In Figures 2 to 4, inclusive, the honing unit 36 is shown positioned within the head 22, so that the base ring 38 rests upon the flange 3'2 and extends over the slots 34 in the flange 32.

When the honing unit 36 is in this position within the cutting head 22, the cutting edges of the spokes 18 bear against the abrasive ring 40 and the portions of the base ring 38 adjacent the slots 34 project into the slots 34 a short distance. The upper face of the ring 40 is frictionally engaged by the cutting edges 20 of the spokes 18, anchoring the base ring 38 on the flange 32 and sharpening the cutting edges 20 of the spokes 18 when the shaft 14 is rotated.

In Figure 5, the honing unit 36 has been reversed within the housing 2 2, so that the resilient base ring 38 is uppermost and the abrasive ring 40 rests upon the flange 32. In this position, the cutting edges 20 of the spokes 18 bear against the base ring 38 and engage adjacent portions of the latter, effecting the rotation of the honing element 36 within the cutting head 22 with the outer face of the abrasive ring 40 frictionally engaging the flange 32 and sharpening the edges of the flange 32 adjacent the slots 34 when the shaft 14 is rotated.

In use, the honing unit 36 may be removably inserted within the cutting head 22 in either the position shown in Figures 2 to 4, inclusive, or in the position shown in Figure 5, to alternatingly hone the cutting edge 20- of the spokes 18 or hone the inner surface of the flange 32 at the portions of the flange 32 adjacent each of the slots 34, such flange portions constituting cutting teeth cooperating with the cutting edge 20 of each of the spokes 18 for severing a hair inserted through the slots 34.

While only a single embodiment of the present invention has been shown and described, other embodiments are contemplated and numerous changes and modifications may be made in the invention without departing from the spirit of the invention as set forth in the 3P? pended claim.

What is claimed is:

The combination with a mechanism adapted to shave,

said mechanism having a housing open at one end, a

open end of said housing with the wall of said head surrounding said hub and spokes and having the open end detachably engaging the housing open end, the closed end of said head having an annular shell projecting inwardly thereof and spaced from the wall of said head, a disc closing one end of said shell remote from the other end of said head, and an annular flange extending about the shell adjacent the other end and secured to the adjacent part of the wall of said head, there being a plurality of slots arranged in spaced relation in said flange, of a honing unit comprising a flat base shaped to a ring and fabricated of resilient material and another ring conformably shaped to said base ring and fabricated of abrading non-resilient material superimposed upon and bound to said base ring, said honing unit being positioned within said head so that the base ring rests upon said flange and extends over the slots in said flange with the References Cited in the file of this patent UNITED STATES PATENTS 2,292,931 Dicke Aug. 11, 1942 2,332,405 Smith Oct. 19, 1943 2,494,414 Snider Jan. 10, 1950 FOREIGN PATENTS 1,103,679 France May 25, 1955 Gallagher June 27, 1933

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