Albert Dunkin

40194329, Apr 26, 1977

Jan 21, 1976

5/651149

Albert Dunkin - South Norwalk CT

B21K 158

10 13

A rivet making machine and method in which a stationary set of angularly spaced head forming tools and a ram supported reciprocable set of body working tools are aligned at angularly spaced stations with each other and with a set of body dies carried by a rotatable indexing disc for successive positioning at the work stations. The body dies are independently movable axially of the indexing plate as necessary for cooperation of the head forming and body working tools on a blank carried by each body die. Blank cut-off is effected by a shearing die pair, one die pair being established at the end of each body die opposite the end thereof cooperating with the head forming tools. The other of the shearing die pair may be a fixed die in which relative movement of the shearing die pair is accomplished by indexing movement of the body dies. Alternatively, a shearing tool establishing the other die of the pair may be moved independently of body die indexing.

40527638, Oct 11, 1977

Nov 11, 1976

5/740923

Albert Dunkin - South Norwalk CT

B21K 144
B21K 158

10 27R

A rivet making machine and method in which a stationary set of angularly spaced head forming tools and a ram supported reciprocable set of body working tools are aligned at angularly spaced stations with each other and with a set of body dies carried by a rotatable indexing disc for successive positioning at the work stations. The body dies are independently movable axially of the indexing plate as necessary for cooperation of the head forming and body working tools on a blank carried by each body die. Blank cut-off is effected by a shearing die pair, one die pair being established at the end of each body die opposite the end thereof cooperating with the head forming tools. The other of the shearing die pair may be a fixed die in which relative movement of the shearing die pair is accomplished by indexing movement of the body dies. Alternatively, a shearing tool establishing the other die of the pair may be moved independently of body die indexing.

D2519836, May 29, 1979

Jun 13, 1977

5/805633

Albert Dunkin - Norwalk CT

Whedon-Brome Corp.
Vanderburgh Enterprises, Inc.

D2301

D23 35

46727779, Jun 16, 1987

Mar 6, 1986

6/836847

Albert Dunkin - Bridgeport CT

B24B 354

51128

A knife sharpening device having a base removably supporting a pair of grinding wheels at an acute angle to the horizontal. A housing encloses the base and includes a slot for receiving a knife edge, which when inserted in the housing will seat between the wheels. The wheels are biased into clamping engagement with the knife edge so that to and fro movement in the slot will cause the wheels to contact and grind the edge of the knife.