Pa′per-per′fo-rating ma-chine′.
1. A machine for perforating paper, as with postage-stamps in sheets, to make a weak line which may enable them to be separated by tearing.2. (Telegraphy.) A machine to perforate strips of paper according to a code, the holes allowing the circuit to be closed, so that the circuit may be made and broken in a given sequence to indicate characters. Eddison's machine for this purpose is shown at Fig. 3535. a is the machine; b, a portion of a strip perforated for the use of an automatic telegraphing apparatus. A range of finger-keys is provided, and also a range of slide-plates operating upon punches. A presser-lever is connected by a cam with each finger-key, and contiguous thereto are projections upon such of the slide-plates as are to be actuated by the said finger-key; thereby, on striking the finger-key, the proper punches are actuated to punch the perforations necessary for the message complete; and on releasing the finger-key, the paper is drawn along the proper distance by a peculiar feeding mechanism, and the perforations are made in two lines, so that where three or more perforations are placed triangularly, a long pulsation may result from the metallic connection being made through these perforations successively, the contact being made through the second perforation before ceasing through the first, and so on. See also Little's patents, Nos. 91,240, 91,241.
 |
| Eddison's perforating-machine |
 |
| Paper-polishing machine |
 |
| Machine for polishing enameled paper |
 |
| Paper-polishing machine |
