Method for manufacturing diamond pick-up stylus
AssigneeDiamagnetics, Inc.
InventorGeorge F. Hughes
Life of this patent
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Abstract
A method is provided for forming a pick-up stylus having a record engaging edge located at a predetermined angle with respect to an electrically conductive surface. Two identical jewel elements each having a flat surface, joined together along their flat surfaces. The forward end of the joined work product is ground to a conical tip and the work product is then separated into the two elements each now having a semi-conical tip. A pair of flats are gound on each tip on opposite sides of the semi-cone apex. The flats extend from the previously joined flat surface and intersect each other along an edge which defines the predetermined angle with the previously joined flat surface.
Claims4
A method for forming a pick-up stylus for playing back pre-recorded signals on a record disc, said method comprising the steps of:
- (a) providing a pair of elongated jewel elements, each of said elements having a generally flat surface extending parallel to the longitudinal axis of said element;
- (b) joining said jewel elements along said flat surfaces whereby to form an elongated work product having a forward end;
- (c) rough grinding said work product forward end to a conical surface;
- (d) separating said work product along said joined flat surfaces into two jewel elements each having a semi-conical surface at the forward end thereof;
- and,
- (e) fine grinding pair of planes onto each jewel element semi-conical surface, said planes extending from said jewel element flat surface and intersecting along a line defining a record engaging edge.
Dependencies are inferred from the claim text.