US2141028A - Noise silencing type bar actuating arrangement for typewriters - Google Patents

Noise silencing type bar actuating arrangement for typewriters Download PDF

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Publication number
US2141028A
US2141028A US90497A US9049736A US2141028A US 2141028 A US2141028 A US 2141028A US 90497 A US90497 A US 90497A US 9049736 A US9049736 A US 9049736A US 2141028 A US2141028 A US 2141028A
Authority
US
United States
Prior art keywords
lever
type
key
levers
type bar
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 - Lifetime
Application number
US90497A
Other languages
English (en)
Inventor
Benzing Hugo
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.)
AG Vorm Seidel & Naumann
Seidel & Naumann AG
Original Assignee
Seidel & Naumann 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 Seidel & Naumann AG filed Critical Seidel & Naumann AG
Application granted granted Critical
Publication of US2141028A publication Critical patent/US2141028A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • Figures 1 and 2 show an amplification of the 'type bar actuating arrangement with positive guiding of the key lever parts by means of an elastic organ interpolated between the key levers and the type bars, and a device for stopping the key levers.
  • the guide 45 is provided with a projection 63, adapted to lie against the upper lever 46, when the keys are in their rest positions.
  • the projection 63 is so calculated, that the type bars remain still a, little above the rest seating 64, so that even the noise of the falling back of the type bar is ,very much reduced. If it is required, a noise damping insertion may be interpolated between the projection 63 and the lever 46, but this need only be thin, because, when the levers 46 stop, they and the projection 63 move in the same direction but at different speeds. As the very softly, so that very soft indeed.
  • a typewriter having a platen, a pivoted key lever and having a pin, an auxiliary lever connected to'the tyne lever and having an oversized hole containing the pin, means pivotally connecting the intermediate and auxiliary levers, said intermediate and auxiliary levers and their connections shifting the type lever to a "ready position upon a depression of the key lever, means for arresting the motion of the key and intermediate levers so that the momentum of the type lever in its subsequent flight to the printing position against the platen will displace the auxiliary lever in respect to the intermediate lever because of the loose connection afforded by the pin and oversized hole, and a spring carried by the intermediate lever, being in constant contact with a portion of the auxiliary lever but being flexed by said displacement of the auxiliary lever to brake the printing impact.

Landscapes

  • Mechanical Control Devices (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
US90497A 1936-07-02 1936-07-14 Noise silencing type bar actuating arrangement for typewriters Expired - Lifetime US2141028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18396/36A GB474997A (en) 1936-07-02 1936-07-02 Noise silencing type bar actuating arrangement for typewriters

Publications (1)

Publication Number Publication Date
US2141028A true US2141028A (en) 1938-12-20

Family

ID=10111733

Family Applications (1)

Application Number Title Priority Date Filing Date
US90497A Expired - Lifetime US2141028A (en) 1936-07-02 1936-07-14 Noise silencing type bar actuating arrangement for typewriters

Country Status (5)

Country Link
US (1) US2141028A (hu)
BE (1) BE416312A (hu)
DE (1) DE649546C (hu)
FR (1) FR809388A (hu)
GB (1) GB474997A (hu)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3327829A (en) * 1966-01-25 1967-06-27 Friden Inc Control-bar key-lever-actuation structure for keyboard mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1064078B (de) * 1954-07-03 1959-08-27 Erich Neumann Tastenwerk an Schreib- und aehnlichen Maschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3327829A (en) * 1966-01-25 1967-06-27 Friden Inc Control-bar key-lever-actuation structure for keyboard mechanism

Also Published As

Publication number Publication date
FR809388A (fr) 1937-03-02
DE649546C (de) 1937-08-26
BE416312A (hu)
GB474997A (en) 1937-11-11

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