US2088401A

US2088401A - Razor blade sharpener

Info

Publication number: US2088401A
Application number: US55944A
Authority: US
Inventors: Winchester H Bodecker
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-12-24
Filing date: 1935-12-24
Publication date: 1937-07-27
Anticipated expiration: 1954-07-27

Description

July 27, 1937. w. H. BoDEcKER 2,088,401

` RAZOR BLADE SHARPENER I Filed Dec. 24, 1955 A -lmmlll l .ll Il ,ZT 157 'f BY I l ATTORNEY Patented July 27, 1937 V RAZOR BLADE SHARPENER` Winchester H. Bodecker, Tenaly, N. J.A

Application December 24, 1935, Serial No. 55,944.`

3 Claims.

lThis invention relates to an improvement in razor blade Sharpeners and particularly to a means whereby the proper honing angle of the blade relative to a flat honing surface is attained during the honing operation.

In the past efforts have been made to provide a razor blade holder which held the blade in position to enable the blade to be moved along the flat surface of a honing stone, and one of the objections inherent in these holders is that the angle at which the blade is presented to the cont-acting honing surface is dependent upon the manual Y pressure imposed upon the blade holder. Thus, when considerable pressure is imposed on the holder the angle of presentation of the cutting edge of the blade to the surface of the hone is quite different from the angle at which it is presented when relatively light pressure is imposed on the holder. Accordingly, the sharpening result attained by different users was dependent upon the ability of the user to apply just the right pressure to present the cutting edge of the blade at the correct angle to the honing surface.

The primary object of this invention is to provide a blade holder which automatically presents the cutting edge of the blade at the correct angle to the surface of the hone to enable the maximum of sharpening satisfaction to be had regardless of the extent of manual pressure imposed during the sharpening operation.

Reference is to be had to the accompanying drawing forming part hereof, in Which Fig. 1 is a side elevation of the improved blade holder showing a blade in place, and the holder resting on a fiat honing surface; Fig. 2 is a similar View with part of the base of the holder shown in section Yand the clamping member of the holder in raised position; Fig. 3 is a plan View of the structure shown in Fig. 2; Fig. 4 is a vertical sectional vieW through the structure of Fig. l; and Fig. 5 is a side elevation of the device, with the lower portion of it in section, in position for the sharpenin-g operation.

In the drawing, 6 indicates the base or body portion of the holder, which is provided with a flat underface 'l extending slightly upwardly at its forward end, as indicated at 8. At its rear end, the base 6 is provided with spaced lugs `9 between which the upper or clamping member I0 of the holder is pivoted by means of the pivot pin Il. Both the base 6 and clamping member I0 may be composed of metal or, if desired, of any one of the phenolic plastic materials. The base is formed on its upper face with an inclined seat I2 having a slightly concave surface, on `which the razor blade I3 is received.

Extending longitudinally of the seat is an elongatedY rib I-t constituting a keying means for holding the blade properly positioned on the seat I2. It will be understood that said rib I4 may be made in various shapes to accommodate the differently shaped openings found in various makesof wafertype razor blades. At its opposite ends Ythe base is reinforced by the upstanding Walls 25; The clamping member I0 is formed with a curved under-surface I5, complementary to the curved face of the seat I2 and member II! is also formed with anelongated recess ory groove I6 into which the upst'anding rib It projects when the clamping memberV I0 is brought down upon the blade I3, as the blade rests upon the seat I2 with a minor portion of it, including one of its cutting edges,

'projecting beyond the front of the holder.

ing member with the curved face of the seatA I2, the blade is flexed, as clearly shown in Figs. 1, 4 and 5. This exing movement of the blade causes one of the converging surfaces I9 of the blade, adjacent to the cutting edge 20 thereon to be brought perfectly flat against the honing surf-ace 2|.

The holder with the blade in position as PART GHCE shown in Figs. 1, 4 and 5 is then moved in the direction of the arrows in those figures. Since the greater portion of the blade is disposed within the holder and is exed between the co-operating surfaces of the members 6 and I0 of the holder, and the converging edge portion of the blade is brought into the same plane as the at surface 'I of the base member by the flexing operation, the amount of manual pressure imposed upon the holder during movement of the holder along the honing surface does not in any way affect the angle at Which the edge of the blade is presented to the honing surface. The formation'of a keen cutting edge by an inexperienced person, as well as by those expert in honing, is therefore assured.

To facilitate the movement of the blade holder along the face of the honing stone, the clamping member I0 is provided with fnger-engagingrecesses'ZZ in its opposite ends. These recesses also facilitate Ythe raising of the clamping member I0 when it is desired to reverse the position of the blade in the holder. The base member 6 of the holder is formed with laterally extending lugs 23 to enable it to be held down on the face of the honing stone by one hand while the clamp is being lifted by the other. In operating the holder, with a blade in position, the holder should be moved in one direction only, or in the direction of the arrows shown in Figs. l, 4, and 5, and not with a reciprocatory motion, as the proper honing of a safety razor blade is procured by moving the cutting edge of the blade forwardly only.

What I claim is:

1. A razor blade Sharpener comprising a pair of hinged clamping members between which a exible type blade is flexed and held with one of its cutting edges in a projecting position, one of the clamping members having a flat face for contact with a honing surface facing the convex side of the flexed blade and said surface extending on a line with one of the converging edge portions of the blade adjacent to its cutting edge when the blade is clamped whereby said converging edge portion rests flat upon the honing surface when the holder is placed with its flat face in contact with the honing surface and the flat face of said holder prevents changes in. angular presentation of the cutting edge of the blade to the honing surface.

2. A razor blade Sharpener having a base formed with a flat under surface for slidable reception upon a flat honing surface, the upper surface of said base being formed with an inclined, transversely curved blade seat for receiving a blade and holding it with a. convexly curved face directed toward the honing surface and with a cutting edge projecting forwardly beyond the front limit of the base, a clamping member for forcing the blade against the inclined curved seat so that one of the converging edges of the blade adjacent to its projecting cutting edge will be brought into the same plane as the flat under surface on the base.

3. A razor blade Sharpener comprising a blade holder having a ilat face adapted to be slidably held against a honing surface, and means on said holder for clamping a wafer-type flexible blade and flexing it to hold it with a convex face directed toward the honing surface and with one of its cutting edges projecting out of the holder with one of the converging edge portions of the blade adjacent to said projecting cutting edge brought into the same plane as the ilat face on the holder and constantly maintained in said plane lduring the honing operation regardless of the amount of manual pressure imposed on the holder.

WINCHESTER H. BODECKER.