Abstract: A stropping device of a blade for safety razors, capable of allowing an existing razor blade to be repeatedly used, is disclosed. The stropping device consists of a main body and an adhesive sheet attached on the back surface of the main body. A guide groove part is longitudinally formed on a front portion of the main body, while a protrusion is integrally and horizontally formed on a top portion of the main body. Also, side walls are formed at both side ends of the main body in such a manner that their outer surfaces are smoothly curved. A stropping plate member, produced from a leather material such as a natural or synthetic leather or suede, is attached on the bottom surface of the guide groove part by an adhesive means. In addition, a recess is formed on a rear portion of the protrusion in such a manner that a nail, driven in a wall in a house, is inserted into the recess.

Abstract: Apparatus for sharpening a razor blade including a sharpening member, a housing for securing the sharpening member therein and for guiding a razor blade in back-and-forth sharpening movement within the housing. The housing has a transverse slot for inserting a head of a razor blade holder therein, and a longitudinal slot in a top plate thereof for linear movement therein of the handle which carries the blade holder. The sharpening or honing member is preferably made of a plate of glass secured to the bottom wall of the housing.

Abstract: Novel methods and apparatus for providing a facet on opposed surfaces of a cutting instrument such as a razor blade or the like. Essentially, the methods and apparatus are designed to initially abrade opposed surface portions of the instrument concurrently with a relatively high degree of coarseness at a relatively low included angle and thereafter concurrently abrading the opposed surface portions with progressively decreasing degrees of coarseness at progressively increasing included angles. The facets provided by the methods and apparatus on the opposed surfaces of the instrument have a surface in which the included angle decreases as the distance from the edge of the instrument increases.

Abstract: A knife is supported on a movable saddle support member and the knife blade maintained at a set predetermined angle with respect to a sharpening stone during the sharpening process.

Abstract: A device is disclosed for sharpening both the blade and the screen of a circular blade type electric shaver. A cup is provided which seats in the well from which the screen and blade have been removed. The blade is seated in the cup and engaged to the drive post or shaft of the shaver. By driving the blade from the motor of the shaver while an abrasive surface is held against the blade its cutting edges are sharpened. To hone the inside of the screen a rotor is placed in the cup. The top of the rotor has an abrasive surface. When a screen is pressed against the abrasive surface and the rotor is driven by the shaver motor, the inside surface of the screen is honed.

Abstract: Blade sharpening apparatus including two final honing wheels of substantially cylindrical geometrical configuration. The wheels are nominally five inches in length and six inches in diameter, the diameter of the exit end of the wheel being approximately 0.0015 inches greater than the entrance end. The wheel mounted on either side of a continuous blade strip rotate about parallel axes which are also parallel to the edge of the blade strip. A spiral helix is formed on the surface of each wheel such that when the wheels are intermeshed a nip running along and parallel to the blade edge is formed. The material from which the wheels are fabricated is selected to have sufficient resiliency so as to form a final facet on the blade of substantially convex geometry.

Abstract: A manual hone for the plural cutting surfaces of a rotary electric razor cutter. A flat stone of rounded peripheral contour is mounted in an encircling plastic retainer. The retainer provides shock absorption and prevention of inadvertent passage of any cutting surface over an edge of the stone. A cushion or cushions may be provided within the retainer for absorbing excess finger pressure and additional shock absorption.

Abstract: A method of grinding a toothed cutter for hair-cutting apparatus, the cutter having at least one strip-shaped row of cutting teeth, comprises pressing the entire row into engagement with the circumferential surface of a rotating grinding shaft while longitudinally orienting such row of cutting teeth parallel to the axis of the grinding shaft.

Abstract: The disclosed invention is an accessory for an electric shaver of the type having a removable cutting head equipped with one or more motor driven cutting blades. The accessory has a rigid body provided with a cutting blade receiving pocket or recess. The top face of the pocket is closed and has exposed to the cutting blade an abrasive material suitable for sharpening the blade. The body is of a size and shape that it may be interchanged with all or a portion of the cutting head on the razor and permits engagement between the razor's drive mechanism and a cutter blade while the same is engaged with the abrasive material so that operation of the razor's blade drive will drive the cutter blade while it engages the abrasive surface.