US2278553A - Razor hone and holder - Google Patents

Description

April 1942- s. K. MORROW 2,278,553

RAZOR HONE AND HOLDER Filed Oct. 24, 1940 lnvenior': SAT K MORROW fim. M

Patented Apr. 7, 1942 UNITED STATES PATENT OFFICE 2,278,553 RAZOR BONE AND HOLDER- Sat K. Morrow, Bent County, Colo.

Application October 24, 1940, Serial No. 362,488

1 Claim.

This invention relates to improvements in razor bones and holders.

Barbers employing the ordinary razors find it necessary to hone and strop the same at frequent intervals in order to maintain them sharp. The

razors are nearly always hollow ground and are honed by moving the blade over the flat abrading surface of the hone. The angle of the surface adjacent the cutting edge is determined by the thickness of the razor back and the width of the blade and since material is removed from the blade each time it is honed, the angle changes gradually and in a comparatively short time the area of the surface that must be cut away during the sharpening increases thereby greatly increasing the time and labor necessary to sharpen the blade.

It is the object of this invention to produce a hone of such construction that it can be employed for the purpose of removing the bead between the bevel cutting edge and the hollow ground surface in such a way as to decrease the width of the bevel and thereby decrease the time and labor necessary to sharpen the razor blade.

The above object is attained by means of a construction and an arrangement of parts that will now be described in detail and for this purpose reference will be had to the accompanying drawing in which the improved hone and holder have been illustrated, and in which:

Figure l is a side elevation showing a razor hone holder with a hone positioned therein, a portion of the holder being shown in section taken on line I --I, Figure 2;

Figure 2 is a top plan view' of the hone and holder shown in Figure 1;

Figure 3 is a fragmentary view similar to that shown in Figure 1, and shows the position of a razor blade during the honing operation;

Figure 4 is a transverse section of a razor blade, to a somewhat enlarged scale, showing the angular relation of the bevelled sides of the cutting edge and the relation of the sides with the razor blade; I

Figure 5 shows the position of th razor blade and hone during the operation of removing the bead;

Figure 6 is a view similar to that shown in Figure 5 and shows the shape of the blade after the bead has been removed to the desired extent;

Figure '7 is a section similar to that shown in Figure 4 and shows the decreased width of the bevelled surfaces adjacent the cutting edge; and

of a bone constructed in accordance with this invention.

In the drawing reference numeral l0 designates a wooden block which is provided in its upper surface with a recess ll of the proper depth and size to receive a hone I2. The hone is of the usual size and shape and is somewhat thicker than the depth of the recess so that the abrading surface I3 thereof will project over the walls of the recess in the manner shown in Figure 1. One end of the holder extends a considerable distance beyond the end of the recess H. Extending along the inner end of the hone in a guide surface It that has been shown as outwardly and downwardly inclined with its highest point substantially at the level of the abrading surface. Extending upwardly from the outer edge of the surface 14 is a vertical guide surface l5. A razor blade I6 has been shown in position with the lower corner of its back resting on the surface I4 and its back engaging the vertical surface l5. It will be apparent that the lower rear corner of the blade is on a level below the abrading surface and therefore the bevel that is obtained by reciprocating the blade when positioned in the manner shown in Figures 1, 5 and 6 will be different from the corresponding bevel obtained when the blade is honed by moving it over the abrading surface l3 in the position shown in Figure 3.

In order to more clearly show the relationship of the bevel surfaces with respect to the back of the blade, a somewhat enlarged section of a blade has been shown in Figure 4 in which the lines a -b represent the plane of the abrading surface l3. It will be seen that adjacent the cutting edge two bevel surfaces I! are formed and the width of these surfaces depends to a great extent on the concavity of the sides of the razor blade. The line Where the bevel surfaces intersect the concave surfaces have been indicated by reference numeral l8 and will be referred to herein as beads. It will be apparent from an inspection of Figure 4 that as the blade is repeatedly honed, the material at the corners of the back will wear away and the bevel surfaces I! will also be moved closer to the center of the blade whereby they will be widened and this widening naturally increases the amount of material to be removed during each honing operation.

In Figure 5 the blade has been shown as it appears before the operation for removing the beads I8 has commenced. It will be seen that the cutting edge of the blade is above the abrad- Figure 8 shows a fragmentary side elevation 55 ing surface of the hone and therefore when the blade is reciprocated with its back in position against the wall IS, the bead I8 is being gradually removed and finally the blade assumes the appearance shown in Figure 6 in which the bevel surfaces I1 have been reduced to approximately one-half the width shown in the Figure 5.

After the blade has been changed to the shape shown in Figure 6, it is positioned on the hone as shown in Figure 3, and the honing carried out in the usual manner, until the desired edge has been formed.

In Figure 7 the appearance of the blade after it has been treated to remove the beads I8 and then sharpened has been shown and from this figure it will be apparent that the width of the bevel surface H has been greatly reduced, whereby the speed at which a blade can be sharpened will be greatly increased over that of a blade having the appearance shown in Figure 5.

Although the surface M has been shown inolined, this is not essential as it may be parallel with the abrading surface in the manner shown in Figure 6, because the lower edge of the back of the blade engages a very narrow portion of the surface and it is merely the position of this particular portion of the surface that is material.

In Figure 8 a specially constructed hone 12a has been shown. In this hone, which is intended to be used without a holder, the inclined surface Ida and the vertical surface la are both formed by the material of the hone which can therefore be used for removing the bead and also for sharpening the razor blade in the same manner as when an ordinary hone is employed in connection with a holder.

From the above description it will be apparent that by providing a holder with two angularly related guide surfaces positioned with their longitudinal elements parallel with the abrading surface of the hone and having one of the surfaces positioned beneath the abrading surface, an assembly is produced in which the blade is guided for the purpose .of removing the bead between the bevelled cutting edge and the concave surfaces of the blade and which can therefore be used for reconditioning razor blades that would otherwise have to be sent to a grinding embodiment for regrinding.

Having described the invention What is claimed as new is:

A razor hone holder and razor guide for use it reconditioning ordinary razor blades, comprising a block of material having its upper surface provided with a recess for the reception of a razor hone, the recess extending inwardly from one end of the block and terminating a short distance from the other end thereof, the walls forming the sides of the recess being lower than the upper surface of the end of the block, the upper surface of the end wall of the recess having a guide notch whose bottom surface intersects the end wall surface and the upper surfaces of the side walls, the bottom of the guide notch being positioned wholly below the upper surface of the end wall of the holder, and below the tops of the side walls of the recess, the bottom surface of the guide notch terminating in an upwardly ranging wall that in turn intersects the upper surface of the end wall of the block, the guide notch serving to receive the lower corner of the back of a razor blade to position and guide it relative to the upper surface of a hone positioned in the recess.

SAT K. MORROW.

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