Patent GB-111985-A (GB)
Title: Improvements in or relating to Justification Mechanism for Typographic Composing Machines.
IPC: B41B25/00
Filed: 1917-07-26
Abstract: 111,985. Lanston Monotype Corporation, (Lanston Monotype Machine Co.). July 26, 1917. Strip - perforating machines; justifying type. - To facilitate tabular composition on machines such as are described in Specification 17199/08, a manuallyoperated device is provided for coupling and advancing a linemeasuring and the justificationindicating mechanisms at any point in the line. The device shown consists of a shaft 50 actuated by a knob 61<1> and provided with pinions 52, 51 adapted to gear with the units-wheel 7 and a pinion 53 on the justificationindicator drum 8 respectively. The shaft 50 is mounted in a carrier 54 formed with a lateral sleeve which can rock in a bearing 56. A spring 57 normally holds the carrier and the shaft in an inclined position in which the pinions are out of gear. By depressing the knob, the pinions are put into gear and, on pushing the knob inwards, a lip 62, Fig. 5, enters a recess in the knob and holds the carrier in the horizontal position. Retraction of the shaft 50 is then prevented by means of a pin 68 which is caused to enter a groove 72 in the shaft by depressing a finger lever 63 arranged near the knob. The plunger is pressed outwards by a spring 70 and engages a lug 67 on the hub 64 of the finger-lever. The shaft 50 is engaged by a brake-shoe 81 formed on a sleeve 80 pressed by a spring 82. The hub 64 of the finger-lever is formed with an arm 66 engaging the usual lever 74 for releasing the retaining-pawl 12 of the units-wheel, the lever 74 being operated by a motor 79 and coupled to a link 92, Fig. 4, for releasing the rack 85 which carries the justification pointer 14<x>. The shaft 50 is locked by the pin 68 before the pawl 12 is released from the units-wheel. In operation, composition is effected in the ordinary manner until the line-scale pointer 14<1> is within the justification area of the column or section. The knob 61<1> is then depressed and pushed inwards and the finger-lever 63 is depressed thereby rocking the lever 74 through a limited distance sufficient to release the pawl 12 but not the rack 85, The knob is then turned until the line-scale pointer reaches the graduation at which the next column commences and the justification fraction is read and applied in the ordinary manner. After this operation, the justification pointer is returned in the ordinary manner by means of the motor 79, the line-measuring devices being meanwhile held stationary by the knob 61<1>. The composition of the other sections, except the last, is effected in the manner described above, the justi. fication fraction of the last section being indicated in the usual manner. To facilitate the setting of the pointer 14', a pointer, reading over a dial 83, Fig. 3, is driven by multiplying-gearing from the units-wheel, the dial-pointer making one revolution for an em-movement of the pointer 14<1>, and the dial being graduated in eighteenths of an em. The hub 64 of the finger-lever may be provided with an arm 69 for operating a latch 101 which controls an illuminating-device for the justification-scale. The retaining-pawl 12 can be adjusted by means of a hooked bolt 89, Fig. 3. Since the gearing described above causes the knob 61<1> to rotate the justification-indicator drum in the direction opposite to that due to the normal operating- devices, means are provided for preventing obstruction to the reverse movement of the normal operating devices. As applied to the operating- devices described in Specifications 27264/13 and 110,773, the motors 12a, 25a and the slot 16<a>, Fig. 5, in the rack-member 9 are lengthened; further. the stop 22a, Fig. 3, for the rod 19<a> within the member 9, is made of smaller diameter than the rod so that the sleeve 21a on the member 9 can pass over the stop. The stop may consist of a threaded rod secured in adjusted position by a nut.