Transport mechanism for stationary encoders
AssigneeEsselte Pendaflex Corporation
InventorRichard A. Edwards
Life of this patent
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Abstract
A mechanism is disclosed for feeding tag stock having spaced-apart drive holes and comprises a pair of slidably mounted carrier arms beneath the tag stock each having a plurality of spring loaded pins on an end thereof. The pins of each carrier arm are alternately brought into engagement with the tag stock by means of a rotating cam which engages a follower on the carrier arm. A pin in each of the carrier arms will alternately engage a hole in the tag stock in registery therewith to sequentially advance the tag stock a desired increment of distance as the cam continues to rotate.
Claims7
A mechanism for feeding tag stock perforated at varying predetermined lengths and having drive holes at said perforations, said mechanism comprising:
- (a) guide means for supporting said tag stock;
- (b) first and second spaced-apart carrier arms mounted for oscillatory swinging and reciprocating movement beneath said supported tag stock, each of said carrier arms having cam follower means thereon;
- (c) a set of spaced-apart pins, each slidably mounted in one end of each of said carrier arms, each of said pins in each of said sets being spring-urged away from said ends toward said tag stock;
- and
- (d) first and second cam means rotatably driven at the same speed and in the same direction in engagement with said cam follower of said first and second carrier arms respectively, whereby upon rotation of said first and second cam means each of said sets of pins is alternately brought into contact with said tag stock whereupon a pin in each of said sets will alternately engage a hole in registry therewith to sequentially advance said tag stock a desired increment of distance, there being a pin of one of said sets in driving engagement with a hole in said tag stock at all times.
Dependencies are inferred from the claim text.