Patent GB-191324015-A (GB)
Title: Improved Ribbon Guide Controlling Mechanism for Typewriting Machines.
IPC: B41J35/00
Filed: 1913-10-23
Granted: 1914-07-09
Abstract: 24,015. Wanderer Werke vorm. Winklhofer & Jaenicke Akt.-Ges., and Buschmann, T. E. Oct. 23. Ink-ribbon mechanism; accenting-arrangements.- The vibrator 17 is provided with a multicolour and stencil adjustment, and can be operated either by the ordinary keys or the accent keys through a common driving-member consisting of a threearmed lever 10. (1) The vibrator is carried by a lever 14 pivoted at 15 to the shift-frame 40, and counterbalanced by a spring 29, Fig. 4. The lever 14 is formed with a slot 14<a> engaging a pin 13 on a member 12, which is guided at the bottom by a slotted plate 41 and is formed with aT-slot 12<a> engaging a pin 10<a> on the lever 10. The member 12 is adjustable, in the manner described below, to vary or silence the stroke of the vibrator. The lever 10 is pivoted at 11 to the shift-frame, and is connected by a link 9 to a lever 8 pivoted on one of the arms 6 that carry the universal bar 4, 4<a>. The lever 8 is held by a spring 35 against an adjustable screw-stop 20 on the arm 6. The ordinary keys operate the universal bar, and thereby the vibrator, by means of heels on the associated type-levers. The accent-keys 1<a> are arranged over a rod 38 carried by arms, which are loose on a shaft 21 and are provided with an arm 34 adapted to engage a pin 10<b> on the lever 10. When an accent-key is depressed, the universal bar 4, 4<a> is not operated, but the arm 34 is rocked and the vibrator is operated. The lever 8 yields idly on its pivot during the operation of the accent-keys. (2) For adjusting and slencing the throw of the vibrator, the member 12 is adjusted relatively to the slot 14<a> and the pin 10<a> by means of a lever 24 formed with a slot 24<a> engaging the pin 13. The lever 24 is connected by a link 23 to a crank 22 on the shaft 21, which can be rocked by a ribbon-key (not shown), to set the member 12 in the position shown or in a position in which the pin 13 is towards the right-hand end of the slot 14<a> and the left-hand end of the slot 12<a> engages the pin 10<a>, these two positions being used respectively for the "black" and the "red" adjustments. The vertical movements of the member 12 are limited by an adjustable bottom-stop 18 and by adjustable topstops, not shown. The lever 24 is provided with an arm 25, Fig. 4, which moves between adjustable stops 26, 26<a> and is provided with a roller 27 engaging a retaining-spring 28. The throw of the vibrator is silenced for stencillirg, by setting the member 12 so that the vertical part of the slot 12<a> is presented to the pin 10<a>. This adjustment is effected by turning a disk 30 in the direction of the arrow from the position shown in Fig. 1 to that shown in Fig. 2<a>. The disk is provided with a pin 31 engaging a slot 32<a> in a crank 32 on the shaft 31. On turning the disk in the reverse direction, the member 12 is set in the normal or "black" position. The disk is effective to set the member 12 in the stencil position irrespective of whether the previous setting was for "black" or "red." If the member is in the "red" position, the pin 31 will be in the lower angle of the slot 32<a> and on rotating the disk the pin 31 will be brought to the same position, namely that shown in Fig. 2<a>, as that to which it is brought when the memter was initially in the " black " position. A stop 33 is provided to prevent frictional or accidental lifting of the member 12 when this is in the "stencil" position. Keys.-To compensate for inequalities in the strokes of the accent-keys 1<a>, these may be each provided with a pivoted shoe 37 engaging the rod 38. the shoe being tensioned by a spring 36 and being formed with a l p overhanging the key.