Patent GB-190525861-A (GB)
Title: Improvements in or relating to Means or Apparatus for Operating or Controlling Type-writing and Type-setting Mechanism by Means of Perforated Tape.
Inventor: CREED FREDERICK GEORGE
Filed: 1905-12-12
Granted: 1906-12-12
Abstract: 25,861. Creed, F. G., Coulsen, W. A., Brown, H. T., and Brown, N. P. Dec. 12. Typewriters; type, setting.-Relates to apparatus of the kind described in Specification No. 22,653, A.D. 1902, for operating typewriting or type-setting mechanism by means of perforated tape. The holes in the tape effect the re-arrangement of a number of sliding combs, each such arrangement permitting a bar to enter the recesses in the combs and connect a key-lever of the machine with an actuating-lever. The tape is guided between two vertical plates a, b, each having ten pairs of holes which coincide with the holes d' in the tape d, Fig. 9. The plates a, b are carried by a frame i, which is reciprocated horizontally by a cam k on the driving-shaft m. A perforated plate p, Fig. 7, secured to one of the plates a, b by a spring, enables the tape-guide to be cleared of any matter that accumulates therein. The feed-holes d<3>in the tape are engaged by a pinwheel r having on its shaft a pinion which can be engaged by a feed-rack sliding in a fixed vertical guide v, Fig. 8. A shutter 17 is held by a spring- actuated lever against the lower end of the feedrack. Opposite to the tape-guide a, b are plates 25 in which slide ten pairs of selector pins 27, each of which actuates one of a number of selector plates 21, pivoted on a vertical rod 22 and held in normal position by springs 24. To each pair of selector plates corresponds a stop plate 20, adapted to be moved by a spring 29 into the guide v in order to arrest the descent of the feed-rack. The horizontally-sliding combs 36 of the typewritercontrolling, mechanism are urged to the right by springs 38, and are controlled by a lever 40 and a cam on thedriving-shaft. The tape is passed up between the plates a, b until the first hole or holes d' comes opposite the top pair of holes in the plates a, b. Then, upon the machine starting, the tapeguide is moved by the cam k towards the pins 27. The pins which are opposite to holes in the tape remain at rest, but pins opposite to blank parts of the tape are moved to the left and displace corresponding selector plates 21. The combs 36, being released by the lever 40, move to the right against a stop, those combs which are opposite to displaced plates 21 being thereby prevented from moving. The blank part d<2> of the tape at the end of each letter causes both plates 21 of the corresponding pair to be displaced and a stop plate 20 to move into the guide v. The plates 21 are retained in their displaced positions by a hooked lever 47 actuated by a cam 49. The forward motion of the tape-guide moves the feed-rack out of gear with its pinion, and the rack is then caused to descend until it meets the displaced stop plate 20. The shutter 17 is thereby moved into. position to arrest all the combs 36 which are below the stop plate 20. The tape-guide is moved back by the cam k, and the feed-rack re-engages the pinion. The rack is then raised by a cam, and the tape is fed upwards to bring the next letter into position. After printing, the combs 36 are retracted by the lever 40 and the stop plate 20 by a rod actuated by a cam. When a blank space in the tape follows the last letter of a word, all the combs move forward until arrested by the shutter 17, except the first pair, which are prevented from moving by displaced selector plates, and a spacing movement of the typewriter is thereby effected. The typewriter-controlling mechanism comprises vertical bars 53, pivoted on a rod 54 and pressed by springs 58 against the combs 36. The bars 53 move hooked rods 63, pivoted to the key-levers 62 of the typewriter, beneath a lever 64 which is actuated by a cam or eccentric on the driving-shaft m. The driving-shaft is provided with a clutch mechanism consisting of a driving-cone 74 on a loose wheel 76, Fig. 6, and a driven cone 75 which can be moved along the shaft by means of a screwed sleeve 78 and spring 79. The clutch is controlled by a pivoted stop 83 actuated by a hand-lever 86. The clutch is automatically disengaged after a certain number of words have been written in a line by means of a cam 96, Fig. 3, which is rotated step by step from the lever 64. A bar 104 is pivoted on a shaft 105, carried by a lever frame 106 which is connected to the clutch stop 83. The bar 104 is vibrated by the bar 53 which actuates the typewriter space-bar. When a notch 103 in the cam 96 comes opposite a shoulder on the bar 104, the latter moves under a vibrating bar 110, the lever frame 106 is depressed, and the clutch is disengaged. The clutch may be similarly operated by a second cam after the line has reached a given length independently of the typewriter space-bar. The machine is automatically stopped at the end of a paragraph or message by a bar 53, which is operated by a special perforation in the tape and is connected to the lever frame 106. In a modification of the apparatus, the selector pins 27 are carried by the selector plates 21, and the plates which are not displaced arrest the motion of the combs 36.