COMPUTER TAPE SPROCKET DRIVE WITH 40 PERCENT PIN AND 60 PERCENT FRICTIONAL TRANSMISSION

摘要

A sprocket for translating perforated tape by means of a ring of pins and at least one cylindrical elastomer sleeve adjacent to the pins. Translational forces are exerted upon the perforations of the tape by the pins and upon one surface of the tape by contact with the elastomer. This structure gives a very much longer accurate tape life by reducing sprocket hole damage, particularly where frequent starts and stops are involved.