GB198840A - Improvements in actions for typewriting machines - Google Patents
Improvements in actions for typewriting machinesInfo
- Publication number
- GB198840A GB198840A GB905322A GB905322A GB198840A GB 198840 A GB198840 A GB 198840A GB 905322 A GB905322 A GB 905322A GB 905322 A GB905322 A GB 905322A GB 198840 A GB198840 A GB 198840A
- Authority
- GB
- United Kingdom
- Prior art keywords
- levers
- type
- links
- momentum
- stroke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J7/00—Type-selecting or type-actuating mechanisms
- B41J7/02—Type-lever actuating mechanisms
Landscapes
- Character Spaces And Line Spaces In Printers (AREA)
Abstract
198,840. Hess, E. B., and Royal Typewriter Co., Inc. March 29, 1922. Type-lever actions.-In noise-reducing actions adapted to complete the stroke of the type-levers by momentum, the momentum stroke is rendered uniform for all the type-levers, by attaching the actuating-members of the type-levers at different points from the centre to the sides of the system. As applied to the action described in Specification 182,427, the actuating-links of the middle typelevers are connected to the heels of the type-levers at points vertically beneath the type-lever pivot. whilst the actuating-links of the side type-levers are connected to the heels at points to the rear of the vertical line through the pivot. To avoid return movement of the key-levers during the momentum stroke, the action may include a yielding member; for instance, the actuating-link N, Fig. 2, of the type-lever D may consist of a closely-wound spring n connected to rods n<1>, n<2>, the spring stretching during the momentum stroke. In the action shown in Fig. 3, typelevers D mounted on an oblique segment Bare connected by links N, O to key-levers F, the links O being connected also to levers L. On depressing the key-levers, the links O and levers L come to the dead-centre position when the typelevers reach the position x<1>, and the stroke of the type-levers is completed by momentum, aided by gravity. In the action shown in Fig. 4, the typelevers D are connected by links N to levers N<1> having inclined slots n<1> engaging rollers n<2> on the key-levers F. The levers N<1> at the sides of the system are longer than those at the middle. The links and the type-levers come to the dead-centre position when the key-levers are depressed, and the stroke of the type-levers is completed by momentum. The levers N' prevent the typelevers from rising or rebounding from the rest E. The rest is secured to a plate A' formed with a comb for the key-levers, and a dust-shed a. Keys.-The returning-springs R, Fig. 3, for the levers L are connected to a rocking plate R<1> which can be adjusted by means of an eccentric s to vary the touch. An extension of the plate may form a comb for the key-levers F. Letter-spacing mechanism. - Universal-bar mechanism is operated during the momentum stroke of the type-levers. In one arrangement, the heels of the type-levers are connected to rearwardly-directed links having hooks which engage a universal bar during the momentum stroke of the type-levers. In the arrangement shown in Fig. 3, a universal bar Q at the front of the machine is carried by levers q connected by links V, Y and a lever V<1> to the dog rocker e<3>, the universal bar being engaged by the links O during the momentum stroke. The escapement mechanism and the link Y are shifted with the platen. In the arrangement shown in Fig. 4, a universal bar Q is carried by levers q connected by links R<3>, T<4> and a lever R<4> to the dog rocker, the type-levers being connected to links C<2> having hooks C adapted to engage the universal bar during the momentum stroke.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR551049D FR551049A (en) | 1922-03-29 | ||
GB905322A GB198840A (en) | 1922-03-29 | 1922-03-29 | Improvements in actions for typewriting machines |
DER55676D DE417061C (en) | 1922-03-29 | 1922-04-21 | Typewriter with intermediate lever drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB905322A GB198840A (en) | 1922-03-29 | 1922-03-29 | Improvements in actions for typewriting machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB198840A true GB198840A (en) | 1923-06-14 |
Family
ID=9864472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB905322A Expired GB198840A (en) | 1922-03-29 | 1922-03-29 | Improvements in actions for typewriting machines |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR551049A (en) |
GB (1) | GB198840A (en) |
-
0
- FR FR551049D patent/FR551049A/fr not_active Expired
-
1922
- 1922-03-29 GB GB905322A patent/GB198840A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR551049A (en) | 1923-03-26 |
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