Patent GB-190928912-A (GB)
Title: Improvements in Machines or Apparatus for the Automatic Justification of Lines of Type.
IPC: B41B27/00
Filed: 1909-12-10
Granted: 1910-12-12
Abstract: 28,912. Pulsometer Engineering Co., and Adcock, E. A. Dec. 10. Justifying type.-Relates to machines of the kind in which the spaces in the line, which is always underset, are in succession replaced by others of slightly greater thickness until the line is justified. The line 3, Fig. 1, is held in an expansible type-holder comprising two parts 4, 5 adapted to slide one on the other and to be adjusted to suit any required length of line. The line is confined between a fixed jaw 1 on the part 4 and a movable jaw 2, which slides on the part 5, is pressed against the end of the line by a spring, and is moved to the left as the line expands. When the line is justified, the movement of the jaw 2 releases a spring-pressed pivoted plate 17, Fig. 6, which prevents the further operation of the space - changing mechanism. The space-changing mechanism comprises a support having a guideway 37, Fig. 16, through which the line of type in the holder is moved from a trough 38. On the support is mounted a slide 42, which can move to a limited extent in the direction of the length of the line against the action of a spring In the slide 42 is mounted a slide 50, which is normally pressed by a spring into the guideway 37 and is pushed back by the advancing line of type. To the slide 50 is connected by a lever 53 a second slide 52 or gapfinder which, when the slide 50 is pushed back, is pressed forwards against the line of type. When, during the passage of the line, one of the spaces, which are made shorter than the types, comes opposite to the gap-finder 52, the latter moves forwards into the recess above the top of the space. The further movement of the line carries the slide 42 with it, whereby a clutch is operated which arrests the feed of the line and starts the space-changing mechanism. The space is pushed out of the line by an horizontal pusher into a vertical channel, down which it is drawn, and is then pushed into a receiving-trough. A slightly thicker space is raised into the line from below by a vertical pusher. The gap-finder 52 is then withdrawn by a cam and the slide 42 is drawn back by its spring, whereby the line-feeding mechanism is again started. This operation is repeated for each space in the line until the line is justified. The plate 17, Fig. 6, then prevents the movement of the gap-finder 52 so that the remaining spaces are not changed. The line is passed through three sets of space-changing mechanism A, B, C, Fig. 7, in succession. The line enters a stationary trough 38 from the type-setting machine, and passes through the changing- mechanism A into one of a pair of movable troughs 139, 140, by which it is raised to the level of the mechanism B, through which it is fed in the reverse direction into one of a pair of movable troughs 161, 162. The line is then raised to the level of the mechanism C, through which it is fed into a galley 164. The two pairs of movable troughs 139, 140 and 161, 162 are carried by endless chains passing over sprocketwheels which are intermittently rotated so that when one trough is raised to bring the line opposite to the upper changing-mechanism B or C, the other is lowered into position to receive a line from the lower changing-mechanism. Three lines can thus be dealt with by the machine at once. The lines are fed through the changing-mechanism by pushers attached to nuts travelling on screws 41, 41<a>, 41<b> which are driven through reversing- clutches 109 from spindles 91 connected with a constantly-running main shaft 138. When the nuts reach the end of their travel they permit a sliding bar 269 to fall, whereby a clutch is operated which connects the main shaft for one revolution to a secondary shaft passing through it. Cams connected with the secondary shaft then act on the reversing-clutches 109 so that the feed-screws 41, 41<a>, 41<b> are rotated in the reverse direction and the nuts thereon are brought back to the starting position. The movable troughs of each pair are simultaneously caused to change places, and the line that has passed through the changing-mechanism C is pushed into the galley. Galley mechanism. - At the entrance to the galley is a type-trough 165, Fig. 28, one side of which is formed by a vertically movable plate 170, which is drawn down to permit the line to be pushed on to the galley 164 by. a reciprocating plate 178, which is adjustable to suit lines of different length.