Patent GB-190004174-A (GB)
Title: Improvements in Type-writers.
Inventor: CARMONA MANUEL SANCHEZ
Filed: 1900-03-05
Granted: 1900-04-21
Abstract: 4174. Carmona, M. S. March 5. Type - writers. - Relates to machines in which a small number of keys, for example five, is used, which singly or in combination govern the type-locating mechanism and the printing-device. The box of the machine consists of two sections 20, 21, and two end plates 27. The section 21 is fixed to a shaft 23 journalled in bearings 22 on the section 20, and the end plates are fixed to shafts 26 mounted on the section 20 and connected by bevel gearing 24, 25, with the shaft 23, so that, when the top section 21 is turned down, the end plates are also turned down in order to serve as supports for the bottom section 20. The keys, 28 to 32, are movable vertically on guides 38 and are normally retained in the upper position by a rod 76. 77 fixed to a spring pressed shaft 78, Figs. 1 and 9. Each key is provided with a horizontal guide-way between blocks 33, 34, Fig. 9, for a roller 36 mounted on a pin 44 which passes through the type-locating bar. This bar, Figs. 3, 4, and 5, consists of a number of sections 45, 47, 51, 54, 57, and 60, alternately overlapping each other, and provided with slots through which pass the pins 44. The section 45 is fixed, but the others are free to move horizontally in guide-ways. When a key is depressed, its pin 44 travels down a pair of slots in adjacent sections and causes motion of the sections to the right or, in the case of the last section, to the left, the amount of motion varying with the key or combination of keys depressed. The type-locating bar, by means of a rack 62 and gearing 63, 65, communicates its motion to the carriage 69, in which the type-bars 73 are pivoted on a shaft 72, and brings the selected type-bar over the impression lever 92. This lever is then actuated by a shaft 91, pinion 90, rack 89, lever 87, and a slide 83 which is moved along the shaft 23 by a lever 80 engaged by the arm 77 beneath the key. The type-bars carry three series of types, and the carriage 96 of the impression roller 93, which is normally in its highest position, is lowered to the two other positions by keys 108 and 110 respectively. The letter-spaciog mechanism, Figs. 1 and 11, comprises a spring 116 tending to rotate a wheel 115 which gears with a rack 114 on the paper carriage and is connected by a wheel 117 with a pinion 118 normally fixed to a shaft 119 by a clutch 120, 121. This shaft carries a fixed disc 130 and two loose discs 129, 131. A pin 132 fixed to the disc 130 passes through slots in the loose discs, and springs 139, 143 draw these discs against the pin. A pawl 133 normally engages one of the notches in the disc 129, and the shaft 118 is thus held stationary. When a key is depressed and the slide 83 is moved, a cam piece 138, on a rod 136 fixed to the slide 83, lifts the pawl 133 so that it first engages the disc 130 and then liberates the disc 129. The latter then moves as far as the slot in it permits. When the pawl is allowed to descend, it engages the next notch in the disc 129, and liberates the disc 130, thereby allowing the shaft 119 to partially rotate and feed the paper carriage. For word-spacing, a finger-piece 140, which brings the disc 131 down into gear with the pawl 133, is depressed, and when it is released by withdrawal of the rod 136, after the printing operation, the pawl successively engages the discs 130 and 129, and a double movement of the shaft 119 is allowed. When the carriage is approaching the end of a line, a projection 151 thereon engages a toothed wheel 150, which causes a hammer 148 to strike a bell 147.