GB414298A - Improvements in interlocking arrangements for electric switches - Google Patents

Improvements in interlocking arrangements for electric switches

Info

Publication number
GB414298A
GB414298A GB168434A GB168434A GB414298A GB 414298 A GB414298 A GB 414298A GB 168434 A GB168434 A GB 168434A GB 168434 A GB168434 A GB 168434A GB 414298 A GB414298 A GB 414298A
Authority
GB
United Kingdom
Prior art keywords
key
depression
circuits
action
switches
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
GB168434A
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.)
CAREL AUGUST THEODOR WALDTHAUSEN
Original Assignee
CAREL AUGUST THEODOR WALDTHAUSEN
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 CAREL AUGUST THEODOR WALDTHAUSEN filed Critical CAREL AUGUST THEODOR WALDTHAUSEN
Priority to GB168434A priority Critical patent/GB414298A/en
Publication of GB414298A publication Critical patent/GB414298A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/26—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection operated by hand
    • H03J5/32—Stationary tuning circuits or elements selected by push-button
    • 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
    • H01H13/72—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 wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position

Landscapes

  • Push-Button Switches (AREA)

Abstract

414,298. Keyboard switches. WALDTHAUSEN, C. A. T., 4, Rembrandtlaan, Naarden, Holland. Jan. 17, 1934, No. 1684. [Class 38 (v).] A set of switches for controlling a number of circuits are arranged so that only one circuit can be closed at a time. In the form shown, three circuits are arranged to be controlled by keys 1, 2, 3 which actuate contact mechanism not shown. On depression of a key, its lower end enters between a row of balls 10 in a trough 9 displacing them against the action of springs 11, 12 and thus preventing the depression of any other key. The operated key is retained in its depressed position against the action of its return spring 5 by the engagement of a notch 15 with the edge of a common locking bar 13 pivoted at 19 and controlled by a spring 14. A release key 4 which does not control any contact is provided with a smooth flange 18 which, on depression, moves the locking bar without being locked itself, and releases the operated key.
GB168434A 1934-01-17 1934-01-17 Improvements in interlocking arrangements for electric switches Expired GB414298A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB168434A GB414298A (en) 1934-01-17 1934-01-17 Improvements in interlocking arrangements for electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB168434A GB414298A (en) 1934-01-17 1934-01-17 Improvements in interlocking arrangements for electric switches

Publications (1)

Publication Number Publication Date
GB414298A true GB414298A (en) 1934-08-02

Family

ID=9726217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB168434A Expired GB414298A (en) 1934-01-17 1934-01-17 Improvements in interlocking arrangements for electric switches

Country Status (1)

Country Link
GB (1) GB414298A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976434C (en) * 1955-03-18 1963-09-05 Telefunken Patent Magnetic sound device with push-button activation of the various drive types

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976434C (en) * 1955-03-18 1963-09-05 Telefunken Patent Magnetic sound device with push-button activation of the various drive types

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