GB531478A - Improvements in locks - Google Patents

Improvements in locks

Info

Publication number
GB531478A
GB531478A GB1912039A GB1912039A GB531478A GB 531478 A GB531478 A GB 531478A GB 1912039 A GB1912039 A GB 1912039A GB 1912039 A GB1912039 A GB 1912039A GB 531478 A GB531478 A GB 531478A
Authority
GB
United Kingdom
Prior art keywords
arms
lamp
casing
locks
apart
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
GB1912039A
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.)
CEAG Ltd
ROBERT JONAS PLUMMER
Original Assignee
CEAG Ltd
ROBERT JONAS PLUMMER
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 CEAG Ltd, ROBERT JONAS PLUMMER filed Critical CEAG Ltd
Priority to GB1912039A priority Critical patent/GB531478A/en
Publication of GB531478A publication Critical patent/GB531478A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets

Abstract

531,478. Locks. CEAG. Ltd., and PLUMMER, R. J. June 30, 1939, No. 19120. [Class 44] A lock for a miner's lamp &c. comprises a casing a hinged to one part of the lamp and housing a pair of arms c pressed apart by a spring e so that the ends c' engage behind slots in a plunger b carried by the other part b'. The upper ends of the arms are cut away at c<2> and chamfered to facilitate engagement. To release the arms, the casing a is pushed towards the part b', and the arms are then drawn apart by a magnetic key h, as in Fig. 4.
GB1912039A 1939-06-30 1939-06-30 Improvements in locks Expired GB531478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1912039A GB531478A (en) 1939-06-30 1939-06-30 Improvements in locks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1912039A GB531478A (en) 1939-06-30 1939-06-30 Improvements in locks

Publications (1)

Publication Number Publication Date
GB531478A true GB531478A (en) 1941-01-06

Family

ID=10124081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1912039A Expired GB531478A (en) 1939-06-30 1939-06-30 Improvements in locks

Country Status (1)

Country Link
GB (1) GB531478A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204087A (en) * 1987-04-29 1988-11-02 Philip Wortley Sparke Lock mechanisms
EP0463727A1 (en) * 1990-05-29 1992-01-02 Security Tag Systems, Inc. Pin-clutch mechanism for theft deterrent device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2204087A (en) * 1987-04-29 1988-11-02 Philip Wortley Sparke Lock mechanisms
GB2204087B (en) * 1987-04-29 1991-01-16 Philip Wortley Sparke Lock mechanisms
EP0463727A1 (en) * 1990-05-29 1992-01-02 Security Tag Systems, Inc. Pin-clutch mechanism for theft deterrent device

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