Skate sharpening apparatus
AssigneeUniversal Skate Sharpener Ltd.
InventorsJames H. Hannaford, Warren Myrfield, David H. Weiler, Frederick N. Trofimenkoff, Joseph A. Consay, Donald M. Dobie
Life of this patent
Estimating the term…
Abstract
Grinding apparatus is disclosed with the preferred embodiment being an automatic ice skate sharpening machine. The workpiece is secured to the frame, and a grinding wheel, mounted on a longitudinally moveable carriage, is biased against the workpiece for relative grinding movement. Sensing means are provided for detecting the grinding resistance of the workpiece on the grinding wheel, and control means responsive to the sensing means are provided for regulating the bias of the grinding wheel against the workpiece, in order to avoid chattering.
Claims16
Grinding apparatus comprising in combination clamping means for securing a workpiece;
- a grinding wheel and means for mounting said grinding wheel to said clamping means for relative movement of said grinding wheel with respect to said workpiece;
- sensing means for detecting the grinding resistance of said grinding wheel;
- means for producing a biasing force for biasing said grinding wheel such that engagement of said grinding wheel with a surface of the workpiece may be controlled;
- and
- coupling means, independent of said biasing force producing means and having a variable coupling coefficient and responsive to said sensing means, connected between said biasing force producing means and said grinding wheel so as to mechanically couple said biasing force producing means to said grinding wheel for controlling the biasing applied to said grinding wheel.
Skate sharpening apparatus for ice skates comprising in combination:
- clamping means for securing at least one skate blade;
- a thin flat grinding wheel pivotally mounted within a grinding wheel carriage assembly to engage said skate blade along its bottom edge, co-planar with the principal longitudinal plane of said skate blade and with its axis of rotation normal thereto and having its transverse cross-sectional profile shaped to the desired cross-sectional profile of the skate blade bottom edge;
- sensing means for detecting the grinding resistance of said grinding wheel;
- means for mounting said clamping means to said carriage assembly for relative longitudinal movement of said grinding wheel with respect to said skate blade;
- driving means for displacement of said grinding wheel relative to said skate blade;
- means for producing a biasing force for biasing said grinding wheel such that engagement of said grinding wheel with the skate blade may be controlled;
- and
- coupling means, independent of said biasing force producing means and having a variable coupling coefficient and responsive to said sensing means, connected between said biasing force producing means and said grinding wheel so as to mechanically couple said biasing force producing means to said grinding wheel for controlling the biasing applied to said grinding wheel.
Skate sharpening apparatus for ice skates comprising in combination:
- clamping means for securing both members of a pair of skates with the blades in co-planar alignment;
- a grinding wheel carriage assembly mounted to said clamping means for relative reciprocal movement with respect to said blades, including traversing means for such movement;
- a thin, flat grinding wheel mounted on said grinding wheel carriage assembly co-planar with the principal longitudinal plane of said pair of skates having a horizontal axis of rotation disposed normal to said longitudinal plane of said pair of skates and adapted to subsequently engage each member of said pair of skate blades along the bottom edge thereof and having its transverse cross-sectional profile shaped to the desired cross-sectional profile of the skate blade bottom edge;
- sensing means for detecting the grinding resistance of said grinding wheel;
- driving means for energizing said grinding wheel;
- means for producing a biasing force for biasing said grinding wheel such that engagement of said grinding wheel with the skate blade bottom edges may be controlled;
- and
- coupling means, independent of said biasing force producing means and having a variable coupling coefficient and responsive to said sensing means, connected between said biasing force producing means and said grinding wheel so as to mechanically couple said biasing force producing means to said grinding wheel for controlling the biasing applied to said grinding wheel.
Dependencies are inferred from the claim text.