Edge control device for grinding machine

Claim 2

Edge control device for a grinding machine having a driven grinding wheel with a substantially cylindrical grinding surface with a V-shaped groove therein, said machine having means rotatably mounting a disk-shaped object between its opposed faces for movement thereof toward and away from said groove, as well as means to allow movement of said object from side to side in said groove, whereby a projecting bevel is formed around the edge of said object, said device comprising a bracket arm adjacent one side of said grinding wheel and extending at a right angle from the axis of said wheel beyond the outer periphery thereof, an extension from said bracket arm overlying a portion of the cylindrical surface of said wheel and movable over said V-shaped groove, said extension being curved to correspond to said cylindrical grinding surface and being engageable with a face of said object, and means for adjustably moving said bracket arm from side to side to deflect the object to one side of said Vshaped groove.

Claim 3

The device according to claim 1 wherein the means for adjustably moving said bracket arm from side to side comprises a support, a rack mounted for linear reciprocation on said support and secured to the free end of said bracket arm, a pinion in operative engagement with said rack, and means for rotating said pinion.

Claim 4

The device according to claim 2 wherein the means for rotating said pinion comprises a shaft, one end of said shaft being secured to said pinion, a knob secured to the other end of said shaft, and shaft support means journaled on said shaft between said pinion and said knob.

Claim 5

The device according to claim 1 wherein said extension is composed of non-abrasive material that is softer than the material composing said object.

Claim 6

Edge control device for a grinding machine having a driven grinding wheel with a substantially cylindrical grinding surface with a V-shaped groove therein, said machine having means rotatably mounting a disk-shaped object between its opposed faces for movement thereof toward and away from said groove, as well as means to allow movement of said object from side to side in said groove, said device comprising a support surrounding a portion of said grinding wheel, a rack having a plurality of teeth mounted for linear movement on said support in a direction substantially parallel to the axis of said grinding wheel, a bracket arm secured on said rack and extending adjacent one side of said grinding wheel, lateral extension from said bracket arm overlying a portion of the cylindrical surface of said wheel and extendable upon movement of said bracket arm over said V-shaped groove, said extension being curved to correspond to said cylindrical grinding surface and being engageable with onE face of said object, a shaft rotatably supported on an axis normal to the grinding wheel axis, a pinion secured at one end of said shaft and having teeth engageable with teeth on said rack, and grasping means associated with said shaft for manual rotation thereof.

Claim 7

Edge control device for a grinding machine having a driven grinding wheel with a substantially cylindrical grinding surface with a V-shaped groove therein, said machine having means rotatably mounting a disk-shaped object between its opposed faces for movement thereof toward and away from said groove, as well as means to allow movement of said object from side to side in said groove, said device comprising a support surrounding a portion of said grinding wheel, a rack having a plurality of teeth mounted for linear movement on said support in a direction substantially parallel to the axis of said grinding wheel, a bracket arm secured on said rack and extending adjacent one side of said grinding wheel, lateral extension from said bracket arm overlying a portion of the cylindrical surface of said wheel and extendable upon movement of said bracket arm over said V-shaped groove, said extension being curved to correspond to said cylindrical grinding surface and being engageable with onE face of said object, a shaft rotatably supported on an axis normal to the grinding wheel axis, a pinion secured at one end of said shaft and having teeth engageable with teeth on said rack, and grasping means associated with said shaft for manual rotation thereof.

Claim 8

The device according to claim 5 wherein said rack has an upstanding head portion, an aperture through said head portion parallel to the direction of movement of said rack, a guide extending through said aperture beyond both sides of said head portion, and means for supporting the ends of said guide whereby said rack is slidable on said guide.

Claim 9

The device according to claim 6 wherein the means for supporting the ends of said guide comprise a pair of spaced lugs secured to said support, an upper surface of said rack on both sides of said head portion being slidable along respective bottom surfaces of said lugs.

Claim 10

The device according to claim 5 wherein a stationary shaft support is provided around said shaft between said pinion and said grasping means, and alignable indexing means is provided on said grasping means and said shaft support to enable a predetermined adjustment of said shaft.

Claim 11

The device according to claim 5 wherein a vertical stop extends from said bracket arm and abuts a flange extending from said support.