Patent GB-200782-A (GB)
Title: Improvements in machines for the photographic composing of letterpress and the like matter
IPC: B41B27/32
Filed: 1922-01-10
Abstract: 200,782. Hunter, E. K. Jan. 10, 1922. Type-composing.-In printers' composing-apparatus comprising, as described in Specification 195,104, a stencil-film divided longitudinally into areas bearing different founts or styles of characters which are arranged according to case on different longitudinal lines, strip-controlled means is provided for traversing the stencil-film longitudinally to select a fount, and a character of that fount, and for moving the stencil-film laterally for case-shift. The stencil-film 1, wound on spools 2, 3 and passing over guide-spools 4, 5, is traversed to bring the selected character into the axis of a camera provided with focussing-mechanism for enlarging or reducing. The spindle 32 of the spool 1 is connected by a coupling 33 to a sleeve bearing a pinion 31 gearing with a pinion 29 which is geared to a shaft 28, a pinion 34 on the sleeve of the pinion 31 being geared by pinions 37 to a pinion 36 which is connected by a magnetic clutch 39 to the spindle 38 of the spool 3. The spindle 46 of the spool 4 carries a snail-disc formed with peripheral notches co-operating for character-selection with an adjustable stop, and the spindle 42<a> of the spool 5 is geared to a snail-disc 41 formed with peripheral notches co-operating with an adjustable stop for fount-selection. The gearing 49 - - 52 for the disc 41 is arranged so that spool 5 malces several revolutions for one revolution of the cam. The coupling 33 is employed to traverse the stencil film for character-selection, the clutch 39 being cut out. For fount-selection, the clutch 39 is energized, the coupling 33 slipping. The character-selecting disc is formed with a slot through which the associated stop passes idly when the stencil-film is traversed for fount-selection. The character and fount-selecting stops are operated under strip-control, preferably by the stop-setting mechanism described in Specification 200,127, the character-perforations 119 on the strip 9 controlling one or more contacts in circuit with the coils of the mechanism. The perforations may be arranged on longitudinal areas 127, 128 .., having code-values 1, 2, 4 .. ; each character or symbol being assigned a code-value equal to the sum of the code-values of the perforations representing the character or symbol. The stencil-film is formed with perforations engaging projections on the spools, and a roller provided with fast and loose toothed discs 16, 17, the disc 17 being moved into engagement with the disc 16 by means of an electromagnet 18 to adjust accurately the position of the stencil-film. The character-perforations 119, in conjunction with the word-spacing, perforations 150 and justifying perforations 126, may control the spacing and justifying devices described in Specifications 200,046 and 200,532. To permit caseshift, the spool-mechanism is mounted on a vertically-movable frame 19 provided with a rack 21 driven by a pinion 22. A stop 23 on the rack co-operates with one of three stops 24, 25, 26 on a revoluble spindle 27 which is set by mechanism controlled by perforations in the areas 133, ' 134, 135 of the strip.