Switchable hole punch apparatus

摘要

An apparatus for punching holes is provided. The apparatus may include a base movable from a first position to a second position and first and second punch assemblies attached to and movable with the base. The punch assemblies may each include parallel punches movable relative to the base and having an end. The apparatus may include first and second cams fixed to a rotatable shaft and having an engagement portion for engagement with the ends of the respective punches at a predetermined rotation position of the shaft. When the base is in the first position, rotation of the shaft to the predetermined rotation position may cause movement of only one of the punches relative to the base. When the base is in the second position, rotation of the shaft to the predetermined rotation position may cause movement of only the other punch of the punch assemblies.

主权项

1. An apparatus for punching holes comprising:
a base movable from a first position to a second position; at least first and second punch assemblies attached to the base so as to move together with the base, each of the first and second punch assemblies including a punch movable relative to the base and having an end, the respective punches being parallel; and at least first and second cams fixed to a rotatable shaft, each of the first and second cams having an engagement portion for engagement with the ends of the respective first and second punches at a predetermined rotation position of the rotatable shaft, wherein, when the base is in the first position, rotation of the rotatable shaft to the predetermined rotation position causes movement of only one punch of the first and second punch assemblies relative to the base, and wherein, when the base is in the second position, rotation of the rotatable shaft to the predetermined rotation position causes movement of only the other punch of the first and second punch assemblies.