Patent GB-206261-A (GB)
Title: Improvements in portable typewriting machines
IPC: B41J3/36
Filed: 1922-08-10
Abstract: 206,261. Burg, H. Aug. 10, 1922. Portable type-lever machines.-In a machine having the intermediate mechanism arranged at the level of the key-levers to reduce the height, the universal bail operates a lever mounted at the middle of the machine and connected to letterspacing and ink-ribbon mechanisms. The machine is secured to the base 68 of a casing, comprising sides 79, flaps 67, 70, 74 and a jointed flap 76. The flaps 67, 70, 74 are dropped to support the machine when in use, the flap 67 being supported by a strut 67<1>, and the flaps 70 having pins 73 entering holes in the flaps 74. Horizontal typelevers 10 are each formed with a slot 8 engaging a pin 9 on a link 7 connected to a bell-crank 4 operated by key-levers 1, the links having pins 11, 12 for engaging the type-lever during the forward and return strokes respectively. On depressing the key-lever, the pin 11 effects an easy start of the type-lever, the stroke being completed by the slot 8 and pin 9. On release of the key-lever, a spring 6 returns the parts, the movement of the type-lever being initiated by the pin 12. The type-levers have circular ends 15 which are slotted to engage a pivot-wire 13, and are supported on blocks 16, 17, the blocks 17 being removable to permit detachment of the typelevers. The type-rest 14 is provided with a pad 77, of cloth or the like, formed with grooves for the type-heads 78. Letter-spacing mechanism. - A universal bail 18, operated by the key-levers, has fingers 18<a> engaging a pin 21 on a lever 22 arranged at the middle of the machine and mounted loosely on a shaft 23. A rod 35<a> on the lever engages a lug 35<b> on a rocking arm 37 mounted loosely on the shaft 23 and connected by a link 38 to a rocker 50 provided with escapement dogs which co-operate with a rack 80 on the carriage. The universal bail consists of four arcuate sections which are pivoted independently, the two outer sections engaging pins on the two inner sections. Space-key actions.-A lever 39<a> .supporting the space-key 39 engages a finger 40 on the arm 37, the universal bail remaining at rest when the space-key is depressed. Ink-ribbon mechanism. - A rocking arm 24, mounted loosely on the shaft 23 and having a lug 36 engaging the rod 35a, is connected to a link 25 for operating a vibrator 55, and is provided with an arm 26 carrying a pawl 28 which engages a ratchet-wheel 29 on a feed-shaft 30. The ribbonspools have pinions co-operating with pinions on the feed-shaft, and a hand-lever is provided for moving the feed-shaft longitudinally to reverse the feed. The spools are mounted on pins secured to pivoted arms which are raised to permit detachment of the spools. The vibrator 55 sldies on a support 55a and is connected to a lever 53 which is operated bv the link 25. To adjust the vibrator for platen-shift, the pivot 54 of the lever 53 can slide in a slotted support 58 and is connected by a link 59 to the rocking platen-support 61. Accenting-arrangements. - An accenting-key lever rocks a bell-crank connected by a link to a lever 45, Fig. 3, abutting on a lug 47 on the link 25, referred to above, the arrangement enabling the accenting-key lever to operate the ink-ribbon mechanism without moving the universal bail and the spacing-mechanism.