Patent GB-190718382-A (GB)
Title: Improvements in or relating to Linotype or Matrix Justifying Mechanism
Inventor: BOULT ALFRED JULIUS
IPC: B41B3/06
Filed: 1907-08-14
Granted: 1908-02-13
Abstract: 18,382. Boult, A. J., [Electric Compositor Co.]. Aug. 14. Linotype and like machines; type, setting.-Relates (1) to justifying-mechanism of the kind described in Specification No. 22,995, A.D. 1904, and (2) to co-operative means in a, linotype machine for transferring the line and starting the casting- mechanism. (1) The temporary spaces 7, Fig. 3, which are flexibly connected to the lower ends of the tubes 6, Fig. 10, communicating with the permanent-space magazines, 4, are solid instead of tubular, about half the height of a matrix, and of the form shown in Fig. 6, provided with a dovetailed notch 8 in the rear end for threading on a dovetailed front edge of a slide 9, a V-shaped groove on the top to receive the permanent space from the tube 6, and a notched ear 7<a> for conrexion to a bent arm on the tube 6 by an intermediate piece and pivots at right-angles to each other. The upper end of each tube 6 is flared at the sides 60 and bears against ribs 57 between the mouths of the magazines 4, and is provided at the rear with a bent finger engaging between the magazine block and a flange thereon. Normally, the spaces 7 are held in a closely-packed rank against the end of the slide 9 by a spring-actuated packing- slide 12, and when the space-key 53 is depressed, the left-band space is projected over the assembling- rail 1 by a slide 30, for engagement on the slide 9 by the line-packer 15. The line detent 18 embraces the dovetailed edge of the slide 9 and is connected with a slide 17 by a lug 19 and slot 16, so that it moves transversely with the slide 17 and longitudinally with the slide 9. The spaces 7 pass under a guard rail 26 which prevents withdrawal of the permanent spaces with the spaces 7. The slide 9 is actuated by means of a rock-shaft 173 advanced by a spring and returned through an arm engaged by a rod 177, Fig. 18, lifted against the action of a spring 178 by a cam 163 on a one-revolution shaft 150 started by the line-key. Before the rod 177 is lifted, it is moved downwards slightly to relieve the line of the pressure of the detent 18, through a lever 180 carrying a weighted pawl 182 cooperating with a rack on the detent side 17. The pawl 182 is withdrawn from the rack on the upward movement of the rod 177, and the detent slide 17 is returned by means of a lever 183 and a cam on the shaft 150, the detent sweeping the temporary spaces on the slide 9 back to the rank. The slide 30, Fig. 3, is operated from a rock-shaft 63 having an arm 62 provided with a spring pawl 71 normally held out of the path of a shoulder 36 on a constantly-reciprocating slide 35 by a spring-actuated detent 69, which is released by the impact of a ball 68 rolling in a pivoted trough 67 normally supported by a rocking detent 56 operated by the space-key 53. The trough 67 is returned to normal position by engagement of an arm 50 on the reckshaft 63 with an inclined end wall 72 of the trough. The Elide 12 is advanced indirectly by a spring connected to one arm 44 of a three-armed lever 40, of which an arm 43 advances the slide 12, the arm 44 lowers a vertically-movable bar 90, which thus indicates the number of temporary spaces used, and the third arm raises a vertically-movable bar 74 connected by a pin and slot to a stepped eliminator lever, which is operated when the line reaches justifiable length by a lever on a block adjustable on the detent slide 17, to raise a vertically-movable bar 84, which thus indicates the length of the line less. the width of the temporary spaces. The eliminator lever is pivoted on a horizontallymovable bar 79 guided by parallel levers 81, and the bar 84 is pivoted on an arm 83 of one lever 81. When the full number of temporary spaces have been inserted in the line, a finger 89 on the bar 90 engages a bell-crank lever 136 connected by a bar 137 to a detent lever 138, so that the latter is swung to prevent movement of the trough 67, and the bar 137 swings a lever to make connexion between the space-key 53 and the escapement of a magazine containing spaces of average width for assembly in the ordinary way with the matrices. A line scale 27 is arranged in front of the assembling-rail and is advanced with the line when a temporary space is added, through a distance equal to the difference of the width of the temporary space and a standard or ideal space, by means of a rock-shaft 34 actuated by an arm 73 of the bar 90. The device for selecting and operating the proper escapement levers of the permanentspace magazines is a cylinder 100, Fig. 20, having rotary and longitudinal adjustments determined, respectively, by the bars 84, 90, Fig. 3. The cylinder is divided longitudinally into, for example, six magazine sections, each subdivided into seven channel sections, each subdivided into six sections corresponding in width to the step-by-step endways movement of the cylinder as controlled by a stepped wedge 91. The cylinder is also divided circumferentially into as many equal sections as there are units in the maximum line shortage. Peripheral projections, some long and some short, are placed empirically in the various squares formed by the subdivisions of the cylinder, in the case of the lefthand magazine section in the right-hand subdivision of each channel section only, in the next magazine section in the two right-hand subdivisions of each channel section, and so on. The projections are on disks which together with intervening spacing- disks make up the cylinder 100 on a shaft 108. Each projection disk is provided with a key to engage a keyway in the shaft 108, and the disks are not all different in respect to the number, position, and size of the projections, the requisite differentiation being effected by the angular position of the key. The shaft 108 is mounted in vertically-movable boxes 110 and is moved endways against the wedge 91 by means of a spring piston 114 bearing against a fixed cap 135. The wedge 91 is guided in an adjustable block 120 and receives its motion from the bar 90. Rotary movement of the shaft 108 is effected from the bar 84, through a rack 85 and pinion 216. The cylinder is lifted to operate the selected escapements by means of a rocker 130, which rests on an adjustable stop and is raised by. a bar 115 connected to a bar 115a, Fig. 18, actuated by a cam 151 on the shaft 150 through an arm 105, against the action of a spring 106. A yoke 144 moving with the cylinder 100 returns and normally locks the escapement levers. Lifting of the 'cylinder is prevented until the cylinder has moved at least one step to the left, and for this purpose, the upper end 116 of the bar 115 is pivoted and is, normally, deflected into an inoperative position, against the action of a spring 122, and retained by an arm of a rock-shaft provided with a second arm normally held up by a projection on the wedge 91. In order to correct for slight errors in the filling of the teeth of the rack 85 and pinion 216, the shaft 108 is provided with a ratchet-wheel 208 for co-operation with a dog on a spring-tensioned rock-shaft 210, which is normally retained by a projection on the bar 115 so that the dog is inoperative, and the rack 85 is yieldingly retained by a spring 118 in a socket in a bar 85<a> to allow of the further rise of the cylinder after the latter is locked by the dog. Exact positioning of the cylinder, both -in the rotary and longitudinal adjustmen's, is ensured by means of a toothed wheel 227 and a thin V-edged disk 228 on the shaft 108, and a block 230 on the framing provided with a spur 231 over the wheel 227 and six grooves 226 over the disk 228. The wedge 91 is raised to normal position from the rock-shaft 173, Fig. 3, through an arm 149 engaging in a slot in a link connected to the arm 44 of the ]ever 40. The steps of the wedge are connected by inclines, so that the shaft 108 is returned by the rising wedge. In order to prevent the permanent spaces from bounding forward out of the line, a guard plate 93, Fig. 18, on a spring-retained rocking-arm 95 is swung down in front of the assembling- rail by means of an arm 134 on the bar 115<a>. (2) The shaft 150, Fig. 18, carries a constantlydriven loose gear provided with a ratchet clutch member 152 co-operating with a spring pawl 157 carried by a rock-shaft 156 on a cam 154 on the shaft, and an arm 155 on the rockshaft 156 is normally held so that the pawl 157 is in inoperative position, by an arm 158 on a spring- tensioned rock-shaft 160, on which is a second arm 161 connected with a transversely-movable slide normally retained by an arm of the line-key. The cam 154 co-operates with a projection 159 on the arm 158 to return the rock-shaft 160 and slide and to set the arm 158 in the path of the arm 155 to determine one revolution of the shaft 150. The line-transfer slide 25, Figs. 3 and 18, is operated by a lever 191, a cam 166 on the shaft 150, and a spring 194. A one-revolution shaft 187 for driving the casting-mechanism is driven from a gear 189 through a pawl-and-ratchet clutch 190, 188 controlled by a lever 195 actuated from the cam shaft 150, through a rod 170 connected by a pin 164 and slot 197 with the lever 195 and raising the latter by abutting against a spring pawl 198 thereon. In order to be able to prevent the starting of the casting-mechanism, means is provided for placing the pawl 198 out of the path of the rod 170. An arm 202 for displacing the pawl 198 is provided on a rock-shaft 200 operated by an arm or key 201. A spring detent on the lever 195 holds the pawl 198 in the displaced position and is automatically withdrawn by the rod 170 during its descent.