GB452808A - Improved paper-feeding apparatus for typewriters and like machines such as tabulating and calculating machines - Google Patents

Abstract

452,808. Typewriters &c. SHERMAN, J. Q., RR1 Philadelphia Drive, Dayton, Ohio, U.S.A. April 18, 1935, No. 12012. [Class 100 (iv)] Paper feeding and guiding arrangements.- The platen-roller is associated with pin-wheels and feed-rollers for alternative use in positively and frictionally feeding paper respectively; the pin-wheels being offset or eccentrically mounted with respect to the platenroller. In the apparatus shown in Fig. 2, pin-wheels 28 are mounted in a frame 21 arranged above the platen 1 and formed with paper-guides 21a, 24, forked ends 23 resting on the platen-shaft 2, and flanges 25 attached to the platen-carriage. The pin-wheel shaft 27 is geared to the platen by means of pinions 37, 38, 36. The pin-wheels are laterally adjustable on the shaft, and the pins 30 project through slots 29 in the paper-guide 21a, and slotted guides 35 which are laterally adjustable on a rod 33 secured to the frame. To prevent ready removal, the shaft 27 is mounted in slots in the frame and is retained by slidable catches 40. Feed-rollers 6, 7, co-operating with the platen, are carried by pivoted arms 17, 18, the arm 17 being in engagement with a stud 20 on the arm 18, and a bell-crank 15 having a roller 13 cooperating with a slot 12 in a release-lever 10. If positive-feed' is required, the feed-rollers are released, and the webs are passed upwards between the guides 21a, 35 and engaged by the pins. If positive-feed is not required, the feed-rollers are engaged and the web are passed under the guides 24, the pin-wheels being allowed to rotate idly, or the pin-wheel shaft being removed.' The guides 24 may be replaced by a feed-roller resting on the platen. In an alternative construction, the pin-wheel shaft is mounted on arms pivoted on the platen-shaft, the arrangement enabling the pin-wheels to be swung backwards when out of use. The arms are held in normal or backwards position by a clamping-screw passing through an arcuate slot in the frame. In the apparatus shown in Fig. 5, a shaft 27a carrying pin-wheels 28a is mounted in extensions of the feed-roller arms 18, release of the feed-rollers causing the pin-wheels to co-operate with the platen 1, and vice versa. The platen is formed with grooves for receiving the pins, the grooves being masked at and above the printing line by means of fingers 45.