Patent GB-759823-A (GB)
Title: Improvements in text composing machines
IPC: B41B17/00
Filed: 1951-10-02
Abstract: 759,823. Photographic type-composing machines. WALDEN, L. M. Oct. 2, 1951 [Oct. 9, 1950], No. 14867/55. Divided out of 759,752. Class 98 (1). An intelligence carrier for a photographic type-composing machine comprises a supporting cradle, a pack of separable, selfcontained, substantially identical signal receiving members disposed in series relationship side - by - side on the cradle, and each in lateral abutting contact with the next adjacent one and capable of limited movement as a unit along the cradle, means forming a part of each member adapted to be coded with adjustments representative of character selection, and means forming a part of each member adapted to be coded with adjustments representative of character width. The coding for character width may be effected by expansion of the respective individual signal members supported by the cradle, and certain of the members may be further expanded to effect justification. As shown in Fig. 7, the cradle 30 consists of end brackets 72, 72<SP>1</SP> joined by a rectangular tube 73 and having projections 75, 75<SP>1</SP> joined by an L-section member 76 which guides the wedge portions 51 of patterns 30P (see Specification 759,824). The tube 73 passes through rectangular apertures in the patterns 30P and the right-hand pattern abuts against bracket 72<SP>1</SP>, while the left-hand pattern is engaged by the jaw-block 77 slidable on the tube 73 and engaged by the short end of an L-shaped blade 78 slidable in slots in the tube 73 and biased to the right by springs 79. The cradle 30 rolls on four pairs of rollers 81, each pair of rollers being at right angles and engaging supporting surfaces at level L2, Fig. 5. The cradle 30 is moved longitudinally between the " A " and " B " units (see Specification 759,822 by helical feed screws and from the " neutral " positions to the " A " and " B " unit proper positions by turntables having rollers contacting the guide shoes 97. The transmitter 30T, Figs. 5 and 13, in each cradle 30 has wheels 101 running on tracks 83, 83<SP>1</SP> which, at the same time, confine the pin carrier portions 50, Fig. 7, so that their top edges, cut as rack teeth, form continuous racks supplemented by the auxiliary rack 84, Fig. 13, to control the movement of the transmitter. The central portion of the transmitter is always located to the right of its setting or reading-out portion, and it moves, from left to right in setting and in the opposite direction during reading-out, so that it always engages the simulated rack at a completely contracted portion. The hook 85 operated by the bell-crank 86 and engageable with the ratchet 88 is provided 'to form a positive condensing means for the pattern assembly during reading-out. During reading-in, pattern expansion moves the blade 78 and the line guide bar 92 to the left and thus moves the stop 90 leftwards to control the spacing of characters at the " B " unit. The roller 931 on the extension member 93 of the bar 92 transmits, through lever 94, a measure of pattern expansion to a tabulator stop device at the front of the keyboard. The blade 78 has a rack 875 engaging a pinion 876 itself engaging a rack 879 carried. by a second blade 878. The stop 90 is carried by the sliding support 877 for the pinion 876, and the blade 878 carries a U-shaped member 885, the left-hand end of which is attached to supplementary blade 92 and is confined between the shoe 886 and a lock roller 887 carried on a swinging arm. The roller 887 is engageable in the notch 889 in the blade 78 and is confined therein by the action of the spring 890 interconnecting blades 78 and 92. When locking is effected, blade 878 carrying the stop 90<SP>1</SP> can be moved to the left without blade 78, but blade 78, when moved leftwards is locked to the blade 878. In centring, the blade 878 is moved to the left by a centring control at the keyboard to a position representing a full line of type and the stop 90<SP>1</SP> is pressed to its inward position out of the path of the camera control. At the same time, the sliding support 877 carries stop 90 only half the distance to the central position. For flush right copy, a quad is first inserted at the keyboard to make effective the locking action of roller 877 between blades 78 and 878, and the line centring handle at the keyboard is adjusted to set stop 90<SP>1</SP> at the appropriate position. The transmitter feed is effected by the provision on a shaft 104 carried by the transmitter of pinions 103, Fig. 13, engaging the simulated racks and of a pinion 105, Fig. 16, held against free turning by the pin 106 on the spring-biased bell-crank 107. The pinion 105 is rotatable stepwise in either direction by the left- and right-hand driving mechanisms associated with the " A " and " B " units respectively. The spring-biased lever 111 carries a roller 116 which is operated on by a transmitter driving linkage and is provided with a cam face 117 engaging a face 1171 on the spring-biased twotooth rack member 118 pivoted to the spring- biased lever 119. Clockwise movement of lever 111 imparted from the " A " unit mechanism tilts rack member 118 counterclockwise into engagement with pinion 105 and then pivots lever 119 until the lower end of member 118 'strikes the stop 122, a one pitch angular movement of pinion 105 being effected to move the transmitter 30T with respect to the cradle. When the pressure on the lever 111 is released, the initial counterclockwise movement thereof permits the member 118 to disengage from the pinion. 105 and move upwardly into its initial position. The transmitter carries .eleven pins 130, Figs. 5 and 13, having square upper sections and round lower sections, the nine central pins 130 being in alignment with the nine pattern pins 54 and the two outer pins 130<SP>1</SP> being aligned with the anvils 55 carried by the pattern pin frame 53 for the purpose of depressing the frame when pattern pins are to be re-set. Each pin 130 has a hole engaged by a lever 134 spring- biased downwardly but movable upwards during transmitter movement to avoid interference between the pattern pins 54 and the pins 130 by a bail 137 rockable by a pin lift plunger. The two outer pins 130<SP>1</SP> are normally spring-urged upwardly but can be depressed to engage the anvils 55 by depression of roller 1441 which effects depression of yoke 145 engaging the pins 130<SP>1</SP>. A lock bail 140 engageable under the ends of non-depressed levers 134 to lock them out of action in " B " unit operations is normally retained inoperative by the spring 142 but may be brought into action by the plunger 130<SP>11</SP>. The pins 130 and 1301 are set by power-operated means under the control of the keyboard as described in Specification 759,752.