Patent GB-190813680-A (GB)
Title: Improvements in Typewriting Machines.
Inventor: FELL JOHN CORRY
Filed: 1908-06-27
Granted: 1909-03-18
Abstract: 13,680. Fell, J. C., [Union Typewriter Co.]. June 27. Typewriters. - Inking- apparatus for typewriters is shown applied to a front-strike machine employing type-bars 6 and a platen 8, the spindle of which is supported in end plates 29, the latter being in turn supported by parallel links 31 from the carriage 9. A bar 30, connecting the plates 29, carries a roller 32 traversing a shift rail 33 which is connected by rods 34 with a bar 35 carried by rods 36 pivotally c o n - nected to shift key-levers. The ink - ribbon 41 is wound upon spools 42 mounted upon spindles 43 having bevel-gear connexion with a shaft 46, Fig. 2, which is driven through bevel-gearing by the spring drum driving the platen carriage. The shaft may be moved endways so as to cause either set of bevel - gearing to drive the associated ribbon spool. The ribbon passes through a vibratory carrier 49 guided on the arms of a bracket 51 secured to the top plate 3 of the machine, the bifurcated lower end of the carrier being provided with a pin 52 engaging an arm 53 which is pivoted at 57 in a slot 55, Fig. 4, in a pivoted lever. The latter comprises two parts 56, 58 connected together by rivets 59, or in any other suitable manner, but may consist of a single part. The part 58 is pivoted by a screw 61 to a bracket 60 depending from the plate 3 and is slotted for the reception of a pin 64 secured across the bifurcated end of a link 66 which is connected to a bell-crank lever 17 actuated by members 21, 22, 25, 26 from a universal bar 27 extending beneath the key-levers. A link 16 connected to the lever 17 operates the carriage escapement mechanism. The link 66 presses against a controller on the shaft 46 comprising concentric disks 70, 71 and an eccentric disk 72 connected together by cone surfaces 73, 74. The controller is moved endways on the shaft by an arm 77 on a shaft 79 having a pin 82 engaging an arm 84 which is rotatable by a hand crank 87. The latter has a pin which may engage one of three holes 89 opposite the positions marked N, B, R. Circumferential grooves 70<a>, 72<a> allow oscillation of the part 58. The eccentric 72 provides a continuously variable throw to the carrier 49, when the crank is in position N, which is adapted for use with a single colour ribbon. When the ribbon comprises two colours, for example black and red, the adjustment of the crank 87 to positions B and R varies the throw of the part 58 so as to bring the black and red portions of the ribbon respectively opposite the printing point when a key is operated. An arm 91 on the part 53 engages a hole in an extension 92 of a block 93 slidable on the member 56. A link 94 pivoted to the block 93 is grooved at 96 for guidance to the end 62 of the pin 61 and has a screw stud 97 operating in a cam slot 98 in an arm 99 rigidly secured to the bar 35. A rise of the latter for change of case alters the angular relation of the part 53 with regard to the part 58, thus raising the carrier 49 into a position from which it can be vibrated, as before, to and from the printing point. The pivoted link 94 may be replaced by a member rigidly secured to the block 93.