Control means for a lens-edge grinding machine

Claim 1

Control means, for a lens-edge grinding machine of the kind including a frame structure, pivot means on said frame structure, a lens carrier assembly mounted by said pivot means on said frame structure and rockable about on and translatable linearly along the axis of said pivot means, and means biasing said lens carrier assembly in one axial direction along said pivot means, said control means comprising: (i) a mount linearly slidable on said frame structure parallel to the axis of the pivot means, (ii) means acting between said mount and said frame structure for adjusting said mount linearly thereon and for retaining said mount in a selected position of linear adjustment (iii) a pivot on said mount having its axis normal to the plane of linear adjustment of said mount, (iv) a linear edge cam supported rotatably on said mount by said pivot, (v) means acting between said linear edge cam and said mount for retaining said linear edge cam in a selected position of rotation about said pivot, and (vi) a follower on said lens carrier assembly position by said bias to coact with said linear edge cam for effecting linear movement of the carrier assembly as a function of rocking movement thereof, said linear edge cam retaining means comprising a locking element movably positioned in said mount for engagement in any selected one of a plurality of recesses in said edge cam, and means resiliently urging said locking element into engaged position.