Patent GB-190313985-A (GB)
Title: Improvements in Printing Presses
Inventor: PROUTY WASHINGTON
Filed: 1903-06-23
Granted: 1903-07-23
Abstract: 13,985. Lake, H. H., [Prouty, G. W., and Kimball, W. H.]. June 23. Platen presses; inking-apparatus.-The press is operated by a pulley shaft 3, Fig. 4, which is geared to a shaft 7, carrying a crank 8. The crankpin is connected by a rod 9 to a lever 10, which is pivoted on a shaft 11. The lever 10 is connected by a link 13 to one arm of an elbow lever 14, the other arm of which terminates in a tubular hub 16,'extending across the machine. The hub carries a shaft 17, which is connected by links 18 to the shaft 19, upon which the platen yoke 20 is mounted. The platen yoke is supported on radius arms 21 carried by a shaft 23, and is also actuated by arms 22, one end of the arms being pivoted to ears on the yoke and the other ends being mounted on an eccentric pin 25 carried by bearings in the framing. The pin is secured to a slotted arm 27 which is held in any desired position by a clamping- screw, so as slightly to raise or depress the front of the platen. The shaft 11 fits into an elongated hole in the end of the lever 10, so that the lever may be moved endwise during a certain portion of its vibration. The lower end of the lever 10 is forked, a pin 80, carrying a roller 81, being secured in the fork. The roller engages in the slot 32 of a cam-plate 31 on the shaft 11, the slot being shaped so that the platen is at rest for a quarter of each revolution. For inking the type, two ink fountains and distributing-mechanisms are employed, one being situated above and the other below the forme. An ink fountain 33, an inksupply roll 34<a>, and a distributing-disc 34, are arranged above the forme, the ink being spread over the type by rollers 35. A second fountain 41 and loll 42 are mounted on the framing below the type. A roll 48 and vibrator 49 of well-known construction are carried by the forked upper ends of levers 43 which are mounted on a shaft 45. The lower ends 43<a> of the levers are pressed by springs 46 against a cam 30 on the shaft 23, and thereby caused to oscillate. As the roll 48 is moved away from the ink-distributing roll 42, it comes against the distributing cylinder 55, which is driven by gearing from the shaft 3, the ink thus being transferred to the cylinder. The rollers 35 are inked by the cylinder at the lower part of their motion, the rollers then being situated behind the distributing-mechanism, leaving the latter easily accessible. The gripper mechanism is carried by arms 59 on the lower edge of the platen. A lever 62 is attached to the gripper bar 60, the other end of the lever being pivoted to one end of a rod 63, the other end of which slides in a tubular handle 64, and the sliding being limited by a pin 65 which works in a slot in the handle. A notch in the handle engages a pin in the left-hand radius arm 21. A coiled spring 69 round the rod 63 keeps the gripper fingers 61 pressed upon the tympan sheet on the inner face of the platen. The platen is yieldingly secured to the yoke by bolts and springs. For regulating the impression relative to the right and left ends of the forme, two wedge-shaped blocks 74, Fig. 5, are contained in a groove between the platen and yoke. A shaft 73 carrying a right and left-handed screw, passes through holes in the blocks and also through ears 72 projecting from the yoke 20. Sleeves 77, screwed to fit the shaft 73, fit into the holes in the blocks and are secured by bolts 78. The distance of the platen from the yoke may be adjusted by turning the shaft.