Patent GB-191516923-A (GB)
Title: Improvements in Typewriting Machines.
Inventor: JAMES REGINALD WILLIAM
IPC: B41J19/54
Filed: 1915-12-01
Abstract: 16,923. James, R. W., [Remington Typewriter Co.]. Dec. 1. Type-lever machines; letter-spacing mechanism.-Two key-operated universal bars are arranged to act successively on the escapement. As shown, the dog-rocker 126 is operated initially by a universal bar 117 arranged under the key-levers and is operated finally by a universal bar 152, which is operated initially by the universal bar 117 and finally by the type-levers 11. The universal bar 152 effects a uniform tripping of the escapement, and the universal bar 117 relieves the type-levers from starting the dog-rocker and the universal bar 152. The universal bar 117 is secured to arms 118 on a rock-shaft 119, the middle arm carrying a lever 121 which is connected by a link 125 to the dog-rocker 126 provided with dogs 135, 136. The lever 121 is pivoted at 120 to the middle arm, and is formed with a slot 122 engaging a pin on the arm and also with a lug 124 for engaging the space-bar lever. The universal bar 152 is operated by shoulders 11<a> on the type-levers and consists of a flanged segmental plate secured to a skeleton frame 155, which can slide horizontally and is supported by a plate 81 on the type-lever segment 16. The frame is provided at the front with pins 160, Fig. 6, sliding in apertures in the plate 81, and is provided at the rear with a block 163 sliding on a rod 165 secured to the plate. The rocker 126 is connected by a link 173 to a lever 168 pivoted on a lug 170 on the plate 81 and connected by a link 171 to a lug 172 on the universal bar 152. On depressing the keys, the universal bar 117 starts the dog-rocker and the universal bar 152, and when the type-levers approach the impression position, the shoulders 11<a> overtake the universal bar 152 and complete its movement, and the movement of the dog-rocker independently of the universal bar 117, a slot connexion 190 in the link 125 permitting of the necessary lost motion. The frame 155 is returned by a spring 167, and a stop 166 on the rod 165 limits the movement of the frame. The typelever segment 16 is movable vertically for change of case, the universal bar 152 moving bodily with the segment and the link 173 moving idly.. Case-shift mechanism.-The type-lever segment 16 is guided vertically by ball races 28, 30 and is connected bv links 44 to cranks 47 on a rock-shaft 49 provided with arms 53 bearing rollers engaged by the shift-key levers 60, 61. The segment is depressed for case-shift, and is normally held raised by springs 78 connected to pins 79 on the shaft 49 and to hooks 80 threaded for adjustment in studs 62, on which the shift-key levers are pivoted. The movements of the segment are limited by the engagment of lugs 33, 34 on the segment with resilient stops, each consisting of a longitudinally adjustable plate formed with an inclined end which is slitted to provide two resilient tongues. Key locks.-A latch 73, Fig. 1, pivoted on the shift-key lever 60 is moved under an abutment 75 by a spring 76. The latch is released by a pin 77 on the shift-key lever. Ink-ribbon mechanism.-The universal bar 117 is connected by a link 110 to the usual adjustable vibrator mechanism comprising a slotted lever 108 which carries the vibrator 95.