Patent GB-353126-A (GB)
Title: Improvements in or relating to duplicating arrangements for use on typewriting-machines
IPC: B41J17/00
Filed: 1930-05-09
Abstract: 353,126. Typewriters. WADE, H., 111, Hatton Garden, London.-(United Autographic Register Co. ; 2316, West 43rd Street, Chicago, U.S.A.) May 9,1930, No. 14378. [Class 100 (iv).] Web feeding and guiding arrangements.-In a duplicating-arrangement for typewriters, webs pass over a guide-plate on the carriage and are registered longitudinally by means of oscillatable register-pins. Transverse register may be effected by joggers arranged to tap the edges of the webs. In the apparatus shown in Figs. 1, 5 and 9, a frame C secured to the carriage B<1> of a typewriter B is provided with guide-rods 15, 16 for webs J, and a shelf C<1> having a projection 38 for supporting the webs at the front of the platen B<2>. The webs are taken from a roll having a core I<1> mounted in arms 59 on a yoke I detachably mounted on the typewriter stand A. The shaft 61 of the core rests in slots in the arms and is provided with an adjustable brake-collar 62. The webs hang in loops, and the top loop receives a tension-roller 60a which is guided by slots 59a in the arms. A spring-tensioned shaft 22 mounted in the frame C is provided with pins 22e carrying register-pins 22a having flanges 22f which engage springs 22g, and arms 23b on a shaft 23 mounted in the frame. The arms normally prevent the register-pins from projecting through slots 27 in the shelf. A crank 31a, Fig. 1, on the carriage is connected by a link 35 and arm 36a to a shaft provided with a cam 36b engaging an arm 23a on the shaft 23. The crank is connected also to a link 34 abutting on an arm 20b on a shaft 20, Fig. 5, provided with a finger 20a co-operating with an arm 19a on one of a pair of bell cranks 19 supporting an apron carrying feed-rollers 18. When the crank 31a is raised, the feed-rollers are released, and the cam 36b and arm 23a permit forward movement of the arms 23b thereby permitting the register-pins to protrude. The webs are then drawn upwards and if out of register, registering- perforations therein are fitted over the registerpins. Joggers 24, Fig. 9, for transversely registering the webs are pivoted on pins 25 on the shelf C<1> and have front and rear extensions 24b, 24c for engaging the edges of the webs, the front extensions passing through slots 30 in the shelf. The pins 25 are mounted in slotted brackets 26 on the shelf and can be adjusted laterally. The joggers have inclined arms 24a engaging arms 22c on the shaft 22, engagement being maintained by springs 24d. When the register-pins are protruded, the shaft 22 is rocked by means of a finger lever 22b and the joggers are rocked to register the webs transversely. Web-cutting arrangements.-A tearing-edge 39, Figs. 5 and 9, for the webs J is arranged below the register-pins 22a and is detachably mounted on the shelf C<1>, headed pins on the shelf engaging slots in the tearing-edge. Ink-ribbon mechanism.-Duplicating-ribbons 11a, Fig. 5, passing along the printing line are wound on spools G, Fig. 1, operated alternately by means of a slotted bar G<1> which can be applied to either spool and engages either of a pair of pins H<1> on a yoke H secured to brackets 57 on the typewriter. The ink-ribbon mechanism may be omitted, in which case carbon webs are interposed between the webs J.