Patent GB-189917941-A (GB)
Title: Improvements in and connected with Typewriting Machines.
Inventor: FISHER ROBERT JOSEPH
Filed: 1899-09-05
Granted: 1899-10-21
Abstract: 17,941. Fisher, R. J. Sept. 5. Type-writers.-Relates to machines adapted more particularly for bookwork. Fig. 21 shows atable 89 supporting a book 92, of which the leaves to be written upon are passed through a slot 102 in the platen 101 and turned over so as to rest upon it. The platen is hinged upon the rod 104, upon which it is also free to slide. The platen-supporting bars 91 are vertically adjustable by means of racks actuated from the handle 100 through worm gearing. The bars 1 upon which the type-writer is supported are laid on the exposed page, and are provided with racks 1<a> to enable the machine to be moved as a whole for line spacing. A single platen may he used instead of a double or slotted one, or the book may be supported upon a vertically-adjustable table beneath a pair of hinged platens flush with a fixed table. Fig. 2 shows the type-writer in vertical section. The frame 2, 3 is supported on the bars 1, and is provided with a series of aligning-notches which enable the bars to be spaced apart to suit the width of the page. The pinions 8, which gear with the racks 1<a>, are similarly adapted for adjustment on their supporting-shaft 24, being locked in position by the dogs 25. Line spacing is effected by a lever having a pawl engaging the teeth of a ratchet-wheel on the shaft 24. The carriage, comprising the keyboard and pendent crescent-shaped type-bar supporting- ring 12, moves on the carriage guides 4, 5, any suitable form of feed-mechanism being employed to operate the pinions 19, 20 which mesh with the racks 21, 22 on the carriage guides. The type-bars 13 are carried by the ring 12, and are operated from the keys 14 through the medium of levers 15 and spring-controlled rods 16. The type-bars may be provided with ball bearings as shown in Fig. 34, where each block 2 has an upwardly-standing disc provided with ball races on each side and adapted to fit within the slot 11. Discs 9 provided with ball races internally are screwed into place to retain the balls and complete the bearing. The inking-ribbon 35, Figs. 2 and 4, is mounted on spools 34 which turn on a sleeve 36 adapted to slide on a rod 33 mounted on the type-writer frame. A bracket 54, secured to the hanging rods 43 which support the rear end of the type-bar supporting-ring 12, is provided with an arm 59 having a terminal fork fitting in a circumferential groove in the sleeve 36, and serving to give rigidity to the pendent portion of the carriage, while at the same time causing the ribbon spools to move to and fro along the bar 33 as the carriage moves. The ring 12 is also steadied by means of grooved guides 62, Fig. 2, supported on the frame and engaging with vertical tongues 63 on the type-bar supporting-ring. Two pairs of pawls 48, 49 are used to turn the spools 34, a trip lever 53 being adapted to throw one or other pair out of action. The pawls are actuated by a rock-shaft 46, linked by the rod 83 to an arm 82, which is operated by means of a universal bar on the depression of any key. The ribbon 35 passes over guide-pins 65, 66, and through openings in the ribbon guide 67, the forward portion of which is hinged at 68, Fig. 2. After the depression of each key the ribbon-guide is lifted by means of the rod 76 so as to expose the writing. To facilitate adjustment of the machine on the bars 1 so as to write upon any desired line, a "line finder" 85 can be depressed by the key 87, the head 86 being then aligned with the desired ruling.