Charles S Weisman

US Patent:

39888657, Nov 2, 1976

Filed:

Feb 18, 1975

Appl. No.:

5/550321

Inventors:

Charles Weisman - Valley Stream NY

International Classification:

B24B 1900

US Classification:

51228

Abstract:

An improved clamp is disclosed in which a carrier plate is mounted slidably within a housing and is moved in one embodiment in a linear direction by means of an actuator. First and second arms are mounted in the housing and in angularly oriented guide slots within the carrier plate whereby, when the actuator moves the carrier plate, the arms move so that jaws at the ends of the arms converge at a clamping position. A pin in each arm is engaged in its own slot in the housing to insure that the jaws move along a predetermined path. In one embodiment of the invention only one of the arms is movable and the other arm is fixed. In a second, self-centering embodiment of the invention both arms move towards each other and equal and opposite bending stresses are induced in the arms which bend the arms within the elastic limit of the metal. The aforementioned Abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.

US Patent:

39568571, May 18, 1976

Filed:

Nov 29, 1974

Appl. No.:

5/528232

Inventors:

Charles Weisman - Valley Stream NY

International Classification:

B24B 2116

US Classification:

51141

Abstract:

For sharpening an ice skate blade or the like, apparatus is provided including a substantially flat reference surface relative to which is mounted a frame that supports a drive motor. A flexible, endless abrasive coated belt is trained about a pulley system that is coupled to and is driven by the output shaft of the drive motor. A convex, movable platen and hold down means cooperating therewith are provided for shaping the belt to the platen. Means are provided for fixing the longitudinal centerline of the platen with respect to the reference surface. On one embodiment of the invention where the platen is movable the last mentioned means provide for moving the platen only in a plane substantially parallel to the plane of the reference surface and for preventing vertical displacement of the platen. The article to be sharpened is held in a suitable jig and clamp arrangement that is positioned on the reference surface whereby the article may be brought into engagement with the abrasive portion of the belt. The aforementioned Abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.