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GB1169457A - A Keyboard Comprising Keys having Head Portions of Transparent Material. - Google Patents

A Keyboard Comprising Keys having Head Portions of Transparent Material.

Info

Publication number
GB1169457A
GB1169457A GB0847/67A GB184767A GB1169457A GB 1169457 A GB1169457 A GB 1169457A GB 0847/67 A GB0847/67 A GB 0847/67A GB 184767 A GB184767 A GB 184767A GB 1169457 A GB1169457 A GB 1169457A
Authority
GB
United Kingdom
Prior art keywords
keys
key
guide plate
lenses
jan
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
GB0847/67A
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.)
Wirth Gallo and Co
Original Assignee
Wirth Gallo and Co
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 Wirth Gallo and Co filed Critical Wirth Gallo and Co
Publication of GB1169457A publication Critical patent/GB1169457A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • 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
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • 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
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/12—Construction of key buttons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20468—Sliding rod

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

1,169,457. Typewriters &c. WIRTH, GALLO & CO. 13 Jan., 1967 [31 Jan., 1966], No. 1847/67. Heading B6F. In a calculating machine the banks of key levers 4, Fig. 1, are provided with transparent key buttons 8 which constitute lenses whose focal lengths correspond to the distance between the lower surfaces of the lenses and a guide plate 9 so that in the undepressed state of the keys the characters associated with the keys and, which are provided on the guide plate below the key buttons, are rendered indistinct due to excessive magnification, Fig. 3, and in the depressed state of the keys are rendered visible on account of the fact that the flat lower surfaces of the lenses are in contact with the guide plate. In another embodiment the key button is made from two components, an upper concavoconvex lens 11, Fig. 8, and a lower plano-convex lens 12 whose lower planar surface 10, is provided with parallel ribs to enhance the effect of rendering the character indistinct in the undepressed state of the key. The ribs may be replaced by a matt undersurface.
GB0847/67A 1966-01-31 1967-01-13 A Keyboard Comprising Keys having Head Portions of Transparent Material. Expired GB1169457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH140766A CH450461A (en) 1966-01-31 1966-01-31 Keyboard with key tops made of transparent material

Publications (1)

Publication Number Publication Date
GB1169457A true GB1169457A (en) 1969-11-05

Family

ID=4209712

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0847/67A Expired GB1169457A (en) 1966-01-31 1967-01-13 A Keyboard Comprising Keys having Head Portions of Transparent Material.

Country Status (7)

Country Link
US (1) US3387693A (en)
AT (1) AT267212B (en)
CH (1) CH450461A (en)
DE (1) DE1547547B2 (en)
FR (1) FR1506033A (en)
GB (1) GB1169457A (en)
NL (1) NL6700483A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464532A (en) * 1967-08-30 1969-09-02 Burroughs Corp Keyboard pushbutton with character visible in depressed position
US3507378A (en) * 1968-06-10 1970-04-21 Ibm Keyboard for displaying one of a plurality of symbolic sets stored therein
US3731988A (en) * 1971-08-27 1973-05-08 R Lynch Magnifying lens devices
US3871506A (en) * 1973-08-08 1975-03-18 Luders Kirill Von Exchangeable keyboard for ball typewriters
US4565460A (en) * 1984-03-05 1986-01-21 Kline Alva C Convex key top configurations
US5145270A (en) * 1991-07-22 1992-09-08 Darden Jody J Reverse slope keyboard
DE19844249A1 (en) * 1998-09-26 2000-03-30 Audi Ag Legend plate, especially for vehicle gear knob, has display symbol formed on rear by mouldings/colored coatings, and is similar to lens with different front and rear radii of curvature
GB0206227D0 (en) 2002-03-16 2002-05-01 Weatherford Lamb Bore-lining and drilling
US6953096B2 (en) 2002-12-31 2005-10-11 Weatherford/Lamb, Inc. Expandable bit with secondary release device
CN105378379A (en) * 2013-08-30 2016-03-02 西门子公司 Operating button

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US430774A (en) * 1890-06-24 Emery m
US2642226A (en) * 1953-06-16 Keyboard
US2228780A (en) * 1941-01-14 System of light control for
US867868A (en) * 1901-04-18 1907-10-08 Erl V Beals Type-writer.
US1286769A (en) * 1918-09-10 1918-12-03 William P Quentell Adding-machine.
US1575784A (en) * 1924-07-16 1926-03-09 American Optical Corp Magnifier
US2265626A (en) * 1937-10-01 1941-12-09 Burroughs Adding Machine Co Calculating machine
US2234954A (en) * 1938-10-03 1941-03-18 Paul R Bergman Illuminated push button
DE196601C (en) * 1963-03-01

Also Published As

Publication number Publication date
DE1547547A1 (en) 1970-03-05
AT267212B (en) 1968-12-27
NL6700483A (en) 1967-08-01
US3387693A (en) 1968-06-11
FR1506033A (en) 1967-12-15
DE1547547B2 (en) 1971-04-22
CH450461A (en) 1968-01-31

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