GB190424355A - Improvements relating to Typewriting Machines - Google Patents

Abstract

24,355. Deutsche Schreibmaschinen- Ges. Nov. 11, A.D. 1903 [date applied for under Patents Act, A.D. 1901]. Type-writers.-Relates to means for varying the force of the impression in type-writers having the type-bars guided by parallel links such as those described in Specification No. 14,601, A.D. 1901. A number of characters are carried by a type-bar 16 which is supported by links 14, 15, 17. By the depression of one of the keys 6, 23, 7, 39, the correct character is impressed. The key-lever is connected by a piece 40 with a two-armed lever 170 having a pin-and-slot connection with a rod 42 which is attached to the short arm 172 of the lever 17. A tension spring 175 acts on the end of the rod 42 so as to hold the type-bar away from the paper roller. When a key has reached the end of its downward stroke, the lever 17 and rod 42 continue their travel, the pin 174 at the end of the rod 42 moving back in the slot 173. When the type-bar meets the paper roller, the spring 175 draws back the lever 17 and rod 42. The force of the impression is varied by altering the length of the rod 42. This may be done by screwing the end of the rod in or out of a pivot at the end of the arm 172. A screwed coupling-sleeve 178 on the rod 42 may also be employed. The lengths of the rods 14, 15 may be varied by suitable devices, or the lever 170 may be adjusted so as to alter the position of the slot 173, or the position of the pin 174 may be varied. Instead of screw devices, other adjusting-means such as keys, wedges, racks, or the like may be used. The adjustment may also be effected by the displacement of the pins 43, 171. The device may be applied to type-writers of other kinds, such as those in which the type-blocks are carried by simple striking-levers instead of a type-bar.