Abstract:
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.
Abstract:
A spindle for rotatably supporting a reel having both positive and frictional engagement between the spindle and the reel. The positive engagement is made at one end of the spindle, as by means of plural pins which engage plural recesses in the reel. The frictional engagement is made at the other end of the spindle and is provided by a radially expansible elastomer which is expanded by a locking arm. This dual engagement advantageously holds two-piece reels together as well as to the spindle.