Patent GB-189728897-A (GB)
Title: Improvements in Type-writing Machines.
Inventor: BARNEY EDWIN EARL
Filed: 1897-12-07
Granted: 1898-04-09
Abstract: 28,897. Barney, E. E., and Tanner, F. J. Dec. 7. Type - writers. - The key levers 5, 7 are pivoted on rods 4 in grooves in an inclined bracket 3. The arm 7 of each key lever is slotted at its upper end 8 for adjustment purposes &c., and is connected by a rod 10 to a typebar 14. Each typebar is bifurcated at its lower end so as to straddle a plate or bracket 17 on which it is pivoted. On the rod 10 is a pin 13 engaging the lower branch of the heel of the type-bar, which is formed as shown. The rod 10 is also provided with a slot engaging a pin on the type-bar. The parts are so arranged that the movement of the type is stopped by the pin and slot, just before the type strikes the platen, the type moving on by its momentum to give a sharp impression. The brackets 17 are fixed on a quadrant 19, on which are also radial guides 20 for the type-bars. The quadrant 19 is hung on arms of a shaft 24, and on' this shaft are also arms carrying the front carriage guide-rail 28. The shaft 24 can be rocked by a lever or by a shift key to raise the quadrant 19 and move the carriage downward to bring the second set of types into operation. The rear of the carriage is supported by a bar 37. The carriage comprises end bars 38 in which the platen 40 is journalled, and which are connected at the rear by a rod 42 and in front by a rod 43. On the latter are bearing-bars 44 for a roller or rollers 45 running on the guide-rail 28. The rod 42 is supported in blocks 46 on the bar 37. A paper guide or apron 49 is pivoted on a rod 48. A frame 51, 52 is pivoted on the rod 48, and is provided with a line-spacing pawl carrier adjustable for a one or two line space. The frame 51, 52 is operated by the end 79 of a lever connected to a carriage shifting &c. bar. A pressing-roller 55 is carried by arms 54 pivoted at 48. The blocks 46 extend forward and carry a bar 81 on which is an escapement tooth engaging the rack 85. The movable escapement pawl is pivoted and slides on the bar 81, and means are provided for disengaging it from the rack to free the carriage. In rear of the bar 81 are rollers running on a bar 82. The carriage is connected at each end to a wire 109 passing round a spring wheel 102. The tension of the spring is regulated by a toothed wheel 106 and pawl 108. On the spring wheel is a gear-wheel 112 in gear with a transversely-sliding rack bar 75 operated by a lever at one side of the machine. This lever serves to shift and return the carriage, and re-winds the spring. The operation of this lever also operates the line-space lever 79. The spacing-rack 85 is carried by arms rocked by rods connecting them to the space keys &c. The wheel 112 drives a shaft 114 geared to a shaft 117 on which are bevel-wheels for driving the shaft of either of the ribbon spools 121. The ribbon passes round a guide b which is moved to raise the ribbon over the printing point by means of a bell-crank lever 126 connected by a rod 125 to the universal bar 124. The lever 126 is pivoted on a movable support, which is moved by the rail 28 when the carriage is shifted for upper-case work. 137 is a toothed bar having an adjustable tappet 139 which operates the hammer of an alarm, and then operates an arm on a rock shaft which permits a pivoted hook to fall and lock the universal bar 124. The bar may be released for printing one or more characters at the end of the line by operating a special key lever.