GB919989A - Improvements in control knobs for rotatable members - Google Patents

Improvements in control knobs for rotatable members

Info

Publication number
GB919989A
GB919989A GB3769660A GB3769660A GB919989A GB 919989 A GB919989 A GB 919989A GB 3769660 A GB3769660 A GB 3769660A GB 3769660 A GB3769660 A GB 3769660A GB 919989 A GB919989 A GB 919989A
Authority
GB
United Kingdom
Prior art keywords
bush
key
grooves
rotatable members
control knobs
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
GB3769660A
Inventor
Glen Atkins
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.)
Wipac Development Ltd
Original Assignee
Wipac Development Ltd
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 Wipac Development Ltd filed Critical Wipac Development Ltd
Priority to GB3769660A priority Critical patent/GB919989A/en
Publication of GB919989A publication Critical patent/GB919989A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/28—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for preventing unauthorised access to the controlling member or its movement to a command position
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • G05G1/10—Details, e.g. of discs, knobs, wheels or handles
    • G05G1/12—Means for securing the members on rotatable spindles or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/285—Locking mechanisms incorporated in the switch assembly and operable by a key or a special tool

Abstract

919,989. Securing knobs on shafts. WAPAC DEVELOPMENT Ltd. Oct. 27, 1961 [Nov. 2, 1960], No. 37696/60. Class 80 (2). [Also in Group XXXVII] A pointer knob for a rotary switch &c. 10 comprises an inner bush 16, secured to a shaft 15 by a spring clip 17, and an outer member 18 freely rotatable about bush 16 but held against axial movement by an extension 23 of the bush 16. The bush 16 and the member 18 are each provided with grooves 26, 27 respectively into which when they are aligned, a key 28 can be inserted to lock member 18 to the shaft. A forked bracket 25, co-operating with grooves in the key, is provided to ensure that the key can only be removed in one position of the switch, in this case the central off position.
GB3769660A 1960-11-02 1960-11-02 Improvements in control knobs for rotatable members Expired GB919989A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3769660A GB919989A (en) 1960-11-02 1960-11-02 Improvements in control knobs for rotatable members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3769660A GB919989A (en) 1960-11-02 1960-11-02 Improvements in control knobs for rotatable members

Publications (1)

Publication Number Publication Date
GB919989A true GB919989A (en) 1963-02-27

Family

ID=10398352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3769660A Expired GB919989A (en) 1960-11-02 1960-11-02 Improvements in control knobs for rotatable members

Country Status (1)

Country Link
GB (1) GB919989A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417837A1 (en) * 1978-02-17 1979-09-14 Lucas Industries Ltd CONTROL KEY MECHANISM OF AN ELECTRICAL SWITCH
EP2110730B1 (en) * 2008-04-17 2012-01-04 Harman International Industries, Inc. System including device for securing the states of electronic controls

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417837A1 (en) * 1978-02-17 1979-09-14 Lucas Industries Ltd CONTROL KEY MECHANISM OF AN ELECTRICAL SWITCH
EP2110730B1 (en) * 2008-04-17 2012-01-04 Harman International Industries, Inc. System including device for securing the states of electronic controls

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