Patent GB-190213341-A (GB)
Title: Improvements in Type Justifying Machines.
Inventor: LOCK WILLIAM HENRY
Filed: 1902-06-12
Granted: 1903-06-11
Abstract: 13,341. Lock, W. E., [Thorne Type Setting Machine Co.]. June 12. Type, setting.-The composed lines of types t, with their separators s, are moved upwards through a type channel 12 by a pawl 11, past a retaining- paw 17 which supports each line during the measuring operation. The separators are cylindrical but have reduced ends. The channel 12 is formed of two plates 13, 14 and end-plates separated by spaces through which the ends of the separators s project. A measuring-slide 18 is mounted in bearings 19, 20, and carries a collar 23 to which is attached a spring for pulling the slide down to its lowest position. A dividing-bar 25 is pivoted to the slide 18, and connected to a gauge 26 which slides through a bracket 28, and an arm 27. In order to support the bar 25 in a position corresponding with the fractional parts into which the measured shortage of each line is to be subdivided, a series of pins 29, arranged helically upon a cylinder 30, may be employed, these pins passing beneath a rib 34 on the bar 25. In the apparatus shown in Fig. 1, the pins are arranged so as to cause the gauge 26 to move through eighteen times the thickness of each justifying-space ; in a modified form of apparatus, the pins are arranged so as to cause the gauge to move through the thickness of one space. The particular pin 29, required for dividing the shortage of a line into as many parts as there are word spaces, is brought into position beneath the rib 34 in consequence of the rotation of the cylinder by means of gearing 31 and ratchet-wheels 35 engaging with the ends of the separators s. Motion is transmitted from the cylinder 30 through gearing 38, 39, 40, 42, and 43 to a vertical setting-shaft 41, which slides through a measuring-bead 45, which is clamped to the measuring-slide 18 at a height above the pawl 17 suitable for measuring lines of the required lengths. The head 45 carries a sector 50 having teeth 52 on its approximately volute-shaped periphery ; the pitch of these teeth is equal to the thickness of a separator s, and their function is the elimination from the measurement of each line of the aggregate thickness of the separators ; thus, if a line has four word spaces, the fourth tooth is brought above the line of types. The movements of the sector 50 are effected by means of a similarlytoothed and curved arm 53 secured to the shaft 51 of the sector 50. This arm engages with a sliding pawl 55 carrying a rack 56, which engages with a pinion splined on the shaft 41. Therefore, the sector 50 and the cylinder 30 are simultaneously set by the separators s in positions suitable for measuring and dividing the shortage of a line in accordance with its number of word spaces. A coiled spring tends to swing the sector 50 across the line of types, but can do so only under the control of a. cam 68, which actuates a clutch on shaft 51 by means of a cam lever 67, sliding rod 65, and toothed gearing. The measuring-slide 18, with the head 45, is pulled down upon the types by its spring, after the cylinder 30 has been set and the sector 50 swung into position ; this is effected under the control of a cam 71 acting on a cam lever 73 connected to the slide. The slide is locked by a bent arm 79 actuated by a cam-piece 84, which acts upon extensions 82, 83 of the arm.