Patent GB-374109-A (GB)
Abstract: 374,109. Typewriters. REMINGTON TYPEWRITER CO., Ilion, New York, U.S.A.-(Assignees of Hart, F. A.; 2021, Stanley Road, New Britain, Connecticut, U.S.A.) March 3, 1931, No. 6641. Con. vention date, Jan. 24. [Class 100 (iv).] Relay type-lever actions.-In a computing typewriter the counter is actuated by the spring-effected movement of a member from normal position and the restoration of the member is effected positively by the motor power and is utilized to operate the numeralprinting device. The letter-printing levers are operated by a separate drive-member. The invention is described as embodied in the known Remington machine. The typewriter and computing mechanisms are arranged in a structure 1, Fig. 23, removably hinged at 5 to the base portion 2 supporting the motor 7, the letter type-lever driving-roller 8, and the computing and numeral type-lever driving-shaft 13. The motor drives the roller and shaft through an endless belt passing also over a pulley secured to a shaft 209, Fig. 22. The structure 1 may be guided by dowels 6 and be supported in the raised position by struts 276. The letter-type keys 44, Fig. 1, are each provided with a foot portion 48 to rock a spring-controlled bell crank 52 carrying a pivoted finger 59. When a lever 44 is depressed its finger rocks a pawl 65 pivoted on the lever into engagement with the motor-driven elongated ratcher roller 9 which thus rocks the lever until the pawl disengages. The lever is pin-and-slot connected at 80 with the type-carrier actuating- lever 81. Each numeral key 130 has a foot 128 adapted to rock a latch 125 away from a pawl 102 pivoted on a cam 12, there being a cam, pawl, and latch for each digit. When a pawl is thus freed its spring urges it into engagement with an adjacent pinion 96 fast on the motor-driven shaft 13, thus causing rotation of the cam for one revolution whereupon the latch, meanwhile restored by its spring 116, effects disengagement of the pawl. The cam in its rotation first allows a lever 144 under the influence of a spring 157 to descend and through a link 172 rock the corresponding cam plate 180 actuating the counter. The cam then raises the lever again and through a spring-controlled pivoted finger 161 positively operates a lever 134 and connections similar to 78, 81 to strike the numeral type against the platen. Carriage-returning mechanism.-The carriage is automatically returned by the motor at the end of its travel by the rocking of a shaft 221, Fig. 22, arms on which control clutches on shafts 209, 215 to convey the motor drive to shaft 215 geared with the carriage. Another arm 225 of the shaft 221 engages a nut on a rod 227 connected at 232, Fig. 1, with a bar 233 the bevelled end of which, when the shaft 221 rocks, is thrust upwardly between two adjacent detent plates 204 to prevent operation of any of the cams 180. The rod 227 and its connections are also operated to lock the cams by means of the usual tabulator keys 225, Fig. 22, depression of which rocks a corresponding lever 258, Fig. 22, to thrust a lever 262 into the path of a stop 265 on the carriage. At the same time a universal bail 267, operating through links 243, 245, rocks a lever 249 to raise the carriage feed rack 252 out of engagement with the pinion 254, and through arms 240, 231 thrusts forward the rod 227 to lock the cams 180. An extension from the link 245 also controls the clutches to ensure breaking of the carriage-return drive from the motor.