Patent ID: 8109189

Claim:
A hole punching device comprising: a base including a plurality of punch holes; two first punching members and a second punching member, with each of the first and second punching members including a punch pin, with the second punching member including a frame removably secured to the base, with the punch pin of the second punching member slideably mounted in the frame; a first lever arm pivotally moving with respect to a proximal end of the base and abutting with and moving the punch pin of one of the two first punching members into one of the plurality of punch holes upon depression of the first lever arm; a second lever arm pivotally moving with respect to a distal end of the base and abutting with and moving the punch pin of another of the two first punching members into another of the plurality of punch holes upon depression of the second lever arm; and a third lever arm pivotally mounted to the frame and moving with respect to the punch pin of the second punching member and abutting with and moving the punch pin of the second punching member into another of the plurality of punch holes upon depression of the third lever arm, with the frame and the third lever arm being movable and locatable at different positions intermediate the two first punching members; wherein the first lever arm has a longitudinal length longer than those of the second and third lever arms, with the second lever arm being longer than that of the third lever arm; and wherein the first lever arm actuates the second and third lever arms upon depression of the first lever arm.