GB466791A - Improvements in mechanically operated typewriting machines - Google Patents

Improvements in mechanically operated typewriting machines

Info

Publication number
GB466791A
GB466791A GB33603/35A GB3360335A GB466791A GB 466791 A GB466791 A GB 466791A GB 33603/35 A GB33603/35 A GB 33603/35A GB 3360335 A GB3360335 A GB 3360335A GB 466791 A GB466791 A GB 466791A
Authority
GB
United Kingdom
Prior art keywords
shaft
driving
lever
eccentric
type
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
Application number
GB33603/35A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympia Bueromaschinenwerke AG
Original Assignee
Olympia Bueromaschinenwerke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olympia Bueromaschinenwerke AG filed Critical Olympia Bueromaschinenwerke AG
Priority claimed from GB771537A external-priority patent/GB491971A/en
Publication of GB466791A publication Critical patent/GB466791A/en
Expired legal-status Critical Current

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
    • 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
    • B41J7/18—Levers having moving or variable fulcra to alter the mechanical advantage during the stroke

Landscapes

  • Handling Of Sheets (AREA)
  • Rolling Contact Bearings (AREA)
  • Tires In General (AREA)
  • Labeling Devices (AREA)

Abstract

466,791. Typewriters. EVANS, O. (Olympia Buromaschinenwerke Akt.-Ges.) Dec. 4, 1935, No. 33603. [Class 100 (iv)] Relay-type-lever actions.-The selected typelever is raised into proximity to the platen by means of a driving-shaft, and impression is effected silently by co-operation of the typelever with a rotating pressure-device which is arranged in front of the printing point and is driven in synchronism with the driving-shaft. In the action shown in the Figure, the type-lever 6 is provided at each side with a stud or roller 7 for co-operation with an impression-cam 2<a> on a shaft 3 geared to the driving-shaft 8. The type-lever is connected by means of a bell-crank 9 to a bell-crank 10 co-operating with an eccentric 18 which is frictionally coupled to the driving-shaft by means of a spring- urged block 34. The eccentric is provided with a spring-urged pawl 19 for co-operation with teeth on the driving- shaft. The pawl is normally held in disengaged position by co-operation of a lug 19<a> thereon with a lug 21<a> on a spring-urged bell-crank 21. A latch 24 for the bell-crank co-operates with a dog 26 which is pivoted on the key-lever 25 and co-operates with an adjustable abutment 28. During one revolution of the driving-shaft the cam 2<a> makes as many revolutions as there are teeth on the driving- shaft. On depression of the keylever, the latch 24 is depressed, the bellcrank 21 rocks forwardly, the pawl moves into the path of the driving-shaft teeth, and the eccentric commences to rotate. An abutment 30<a> prevents premature engagement of the pawl with the teeth, and the friction-coupling 34 prevents shock. During the latter part of its revolution, the eccentric restores the bell-, crank 21, the lug 21<a> gradually releases the pawl from the driving-shaft tooth, and at the end of a revolution the eccentric is arrested by co-operation of the lugs 19<a>, 21<a>, the friction-coupling 34 preventing shock. During the first part of the revolution of the eccentric, the type-lever is raised into proximity to the platen, springs 12, 13 causing the type-lever to move at a uniform speed. The studs 7 then co-operate with the cams 2<a>, and the type-lever is advanced to effect impression. After impression, return of the type-lever is initiated by a tappet 2b on the cams, and is completed under control of the eccentric.
GB33603/35A 1936-02-18 1935-12-04 Improvements in mechanically operated typewriting machines Expired GB466791A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEE47995D DE679178C (en) 1936-02-18 1936-02-18 Pressure device for the type lever of a power-driven typewriter with noise-damped type imprint
DEE48019D DE679179C (en) 1936-02-18 1936-02-22 Lifting device for the type lever of a power-driven typewriter with a noise-dampened imprint
GB771537A GB491971A (en) 1937-03-16 1937-03-16 Improvements relating to type bar operating mechanism for typewriters

Publications (1)

Publication Number Publication Date
GB466791A true GB466791A (en) 1937-06-04

Family

ID=32045555

Family Applications (2)

Application Number Title Priority Date Filing Date
GB33603/35A Expired GB466791A (en) 1936-02-18 1935-12-04 Improvements in mechanically operated typewriting machines
GB8063/37A Expired GB491975A (en) 1936-02-18 1937-03-19 Improvements in operating mechanism for typewriters

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8063/37A Expired GB491975A (en) 1936-02-18 1937-03-19 Improvements in operating mechanism for typewriters

Country Status (4)

Country Link
US (2) US2114659A (en)
DE (3) DE658285C (en)
FR (3) FR797574A (en)
GB (2) GB466791A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3098453A (en) * 1963-07-23 Railroad track maintenance machines
DE1141300B (en) * 1954-03-03 1962-12-20 Siemens Ag Noise-dampening type lever auxiliary drive for auxiliary typewriters
DE1110183B (en) * 1954-10-25 1961-07-06 Adlerwerke Kleyer Ag H Device for changing the key stroke on power-driven typewriters and similar machines
US2900063A (en) * 1956-10-04 1959-08-18 Commercial Controls Corp Power driven type action for character-by-character printers
DE1276055B (en) * 1965-03-20 1968-08-29 Grundig Emv Electromagnetic drive device for type carriers in power-driven typewriters or other writing office machines
GB1108616A (en) * 1965-08-25 1968-04-03 Oliver Pell Control Ltd Improvements in or relating to intermittently operated power-driven mechanisms
DE1927227U (en) * 1965-10-02 1965-11-18 Olympia Werke Ag COUPLING FOR POWER-DRIVEN WRITING OR SIMILAR MACHINERY.
US4328290A (en) * 1980-12-29 1982-05-04 Gould Inc. Battery vent plug
US4668112A (en) * 1985-07-02 1987-05-26 Xerox Corporation Quiet impact printer
US5066150A (en) * 1990-04-18 1991-11-19 Xerox Corporation Low cost quiet impact printer

Also Published As

Publication number Publication date
FR797574A (en) 1936-04-29
DE679178C (en) 1939-07-31
FR48627E (en) 1938-04-19
FR48441E (en) 1938-02-08
DE658285C (en) 1938-03-28
DE679179C (en) 1939-07-31
GB491975A (en) 1938-09-13
US2119928A (en) 1938-06-07
US2114659A (en) 1938-04-19

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