Patent GB-385948-A (GB)
Title: Pocket typewriting machine
IPC: B41J3/37
Filed: 1931-04-01
Abstract: 385,948. Typewriters. HAAS, O., 5, Jahnstrasse, Wiesbaden, Germany. April 1, 1931, No. 9824. Convention date, April 2, 1930. Void [Published under Sect. 91 of the Acts]. [Class 100 (iv).] Pocket type-lever machines; type-carriages; letter-spacing mechanism.-A base is provided with collapsable or attachable extensions for supporting a type-carriage, or alternatively a keyboard is provided at the rear with extensions for supporting a paper carriage. In the machine shown in Figs. 1, 2, and 3 a base 1 has arms 4, 5 supporting telescopic shafts 7, 8 carrying a roller platen 6, slidable extensions 2, 3 of the base being connected by arms 9, 10 to the shafts. A type-carriage 34, supporting type-levers 45, key-levers 44, and escapement mechanism, is mounted on a plate 77 having rails 35, 36 mounted in tracks 26, 27 which are secured to a plate 13 and have hinged extensions 30, 31, 28, 29. The plate 13 is provided with arms 14, 15 connected to linkage 22, 24, 23, 25 so arranged that the plate and type-carriage can be lifted to permit introduction of a sheet. The tracks support sliding extensions 32, 33, the extension 33 being connected to the cord of a spring drum mounted on the plate 77. The type-levers are connected by links 48 to the key-levers and have heels 63 for operating a universal bail 62 carried by rocking arms 64, 65. Escapement dogs 54, 55 are pivoted at 56 on the type-carriage and co-operate with a rack formed on the tracks 26, 30, 31. The normally disengaged dog 55 abuts on the dog 54 and has an arm 69 engaging an extension 64<1> of the arm 64. The escapement mechanism may be replaced by a positive feed mechanism comprising a pinion gearing with the tracks 27, 28, 29 and connected to a ratchet-wheel operated by the universal bail. Case-shift mechanism.-The type-carriage 34, Fig. 1, is mounted in guides 78, 79 on the plate 77 and is movable to the front or rear for caseshift by means of a rocking shift-key. The typecarriage is held in the normal position by cooperation of a pin 82, Fig. 2, thereon with a pair of spring-connected levers. Space-key actions; carriage-releasing arrangements.-A space-bar 60, Fig. 1, carried by rocking arms has a pin 68 engaging the arm 69 of the escapement dog 55. A carriage-releasing key 61 rocks a lever engaging a pin on the escapement dog 54. Line-spacing mechanism.-The platen shaft 7, Fig. 9, has a ratchet wheel co-operating for line-spacing with a pawl 135 connected by a link 134 to a threaded pin 130 engaging a pin 133 on a block 129. When the type-carriage 34 arrives as line-end position, the pin 130 is displaced and the platen is turned for line-spacing. Line-spacing adjustment is effected by adjusting the pin 130. The block 129 has a spring for engaging holes 128 in the extension 32. Sheet feeding and guiding arrangements.-The platen 6, Figs. 2 and 3, co-operates with feed rollers 17, 19. The rollers 17 are carried by springs 18 on the plate 13, and the rollers 21 are carried by the linkage 22, 24, 23, 25, the arrangement effecting release of the rollers when the plate is raised. Ink-ribbon mechanism; accenting arrangements.-A vibrator 107, Fig. 16, for the ribbon 106 engages a bell crank 110 operated by a lug 113 on the universal bail 62. The accenting keys are caused to operate the vibrator without effecting letter-spacing by omitting the lugs 63 from the accenting type levers, and providing them with fingers 118 for engaging a lever 119 co-operating with the bell crank 110. The ribbon spools are mounted on the type carriage 34, Fig. 3, and have ratchet wheels co-operating with pawls connected to the universal bail 62. In another feed arrangement, the ribbon spool is connected by a flexible shaft to a friction roller mounted on the type-carriage and engaging the track 27.