Patent ID: 8707866

Claim:
A mandrel trip apparatus comprising: a mandrel support block retaining a mandrel, said mandrel being cylindrical and having a longitudinal axis, wherein said mandrel support block is connected to a shaft mounting block in a manner such that said mandrel support block is reciprocatingly movable relative to the shaft mounting block in the direction perpendicular to said longitudinal axis of said mandrel; mandrel trip actuator means comprising a piston and a cylinder housing receiving said piston, wherein said cylinder housing reciprocates in the direction parallel to said longitudinal axis of said mandrel; a front plate member and a rear plate member mounted to a rotating shaft in parallel; a rail guide mounting assembly comprising a base mount assembly and a rail support assembly, said rail support assembly connected to said shaft mounting block; said rail support assembly comprising a depending plate member having front and rear bearing mounts each retaining linear bearing rails, said base mount assembly comprising bearing-containing front and rear linear rail guides receiving said linear bearing rails and at least one brace member mounted to said front and rear plate members, whereby said rail support assembly linearly reciprocates relative to said base mount assembly.