430,904. Ink - ribbon mechanism. SMITH & CORONA TYPEWRITERS, Inc., L. C., 701, East Washington Street, Syracuse, New York, U.S.A. Nov. 24, 1933, No. 32910. Convention date, Dec. 2, 1932. Addition to 429,431. [Class 100 (iv)] The apparatus described in the parent Specification is modified by employing a single roller and a stationary, closely-adjacent member which co-operate to raise a film of ink to the rotary transfer-device during rotation of the roller in either direction. The apparatus may supply ink directly to the ink ribbon of the machine, or to a non-absorbent or absorbent conveying-ribbon which is interwound with the ink ribbon. The apparatus shown in Figs. 1, 4 and 6 applies ink to a narrow conveying-ribbon 22 which is attached at the ends by means of eyelets to the ink-ribbon proper 10 and is wound therewith on the spools 17. The apparatus comprises a rotary roller 53 fitting closely in a stationary tube 51, the film of ink raised by the roller being transferred by means of a disc 57 to the conveying-ribbon as it passes over a cork-faced pulley 37 driven thereby. The roller and tube are mounted in a reservoir 29 which is secured beneath the top plate 24 of the machine, the disc 57, pulley 37, and grooved pulleys 36 for guiding the conveying-ribbon around the pulley 37 being mounted on a plate 34 which is secured to the top of the reservoir and is arranged in a gap 29 in the top plate. The roller, tube, and disc are made from steel, brass, or other non-absorptive material. The pivot 38 of the pulley 37 is carried by a pivoted arm 39 which abuts on a pin 43 and is secured by a screw 42 passing through a slot 41, the arrangement enabling the pulley to be swung forwards to facilitate threading of the conveying-ribbon. The tube 51 extends nearly to the base of the reservoir and is formed at the top with a slot 56 through which extends the disc 57. The roller is formed with a groove 55 for preventing ink from rising above the top of the tube, and the bottom of the slot and top of the tube are formed with bevels for draining back superfluous ink. The disc is of skeleton form and has a bevelled edge. A sleeve on the disc is loosely mounted on a hub 49 revoluble on a stud 50, and is provided with pins 60 engaging. vertical slots in the hub. A light spring 62 maintains the disc in contact with the roller 53 and conveying-ribbon, the pins allowing the disc to float horizontally. The hub 49 is provided with pinions 47, 48 co-operating with pinions 46, 54 on the pulley 37 and roller 53 respectively, the pulley, disc, and roller having the same peripheral speed. In operation, a very thin film of ink is raised by the roller 53, and a minute line of ink is deposited by the disc on the conveying-ribbon and is transferred thereby to the ink ribbon.
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