GB537353A - Improvements in or relating to electric lamps for use with rafts, life-jackets, buoys and other buoyant marine life-saving apparatus - Google Patents

Improvements in or relating to electric lamps for use with rafts, life-jackets, buoys and other buoyant marine life-saving apparatus

Info

Publication number
GB537353A
GB537353A GB457940A GB457940A GB537353A GB 537353 A GB537353 A GB 537353A GB 457940 A GB457940 A GB 457940A GB 457940 A GB457940 A GB 457940A GB 537353 A GB537353 A GB 537353A
Authority
GB
United Kingdom
Prior art keywords
life
buoys
casing
contact
battery
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
GB457940A
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.)
ALBERT HENRY DOUBLE
Original Assignee
ALBERT HENRY DOUBLE
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 ALBERT HENRY DOUBLE filed Critical ALBERT HENRY DOUBLE
Priority to GB457940A priority Critical patent/GB537353A/en
Publication of GB537353A publication Critical patent/GB537353A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0414—Arrangement of electric circuit elements in or on lighting devices the elements being switches specially adapted to be used with portable lighting devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/42—Grouping of primary cells into batteries
    • H01M6/44—Grouping of primary cells into batteries of tubular or cup-shaped cells

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

537,353. Electric battery lamps for life buoys. DOUBLE, A. H. March 12, 1940, No. 4579. [Class 39 (ii)] [Also in Groups XXXVII and XXXVIII] Electric battery lamps for use with life-jackets, buoys and other life-saving apparatus comprise a battery container. on which the lamp 6 and glass cover 4 are mounted and a screwed-in extension 15 containing a float 34 which, on immersion of the casing, floats upwards to make contact between the extension and contact 39 in connection with the battery. The casing is mounted at a point above its centre of gravity in a bearing 26 which ensures that it will assume a vertical position with the lamp uppermost. Holes 17, 18 permit the entry of water. The float carries a pin contact 35 having a pigtail connection to the casing; when raised by the incoming water the contact engages the fixed contact 39 which is connected with the battery through a blob of mercury 41, a connection which is effective only when the casing is in the vertical position.
GB457940A 1940-03-12 1940-03-12 Improvements in or relating to electric lamps for use with rafts, life-jackets, buoys and other buoyant marine life-saving apparatus Expired GB537353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB457940A GB537353A (en) 1940-03-12 1940-03-12 Improvements in or relating to electric lamps for use with rafts, life-jackets, buoys and other buoyant marine life-saving apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB457940A GB537353A (en) 1940-03-12 1940-03-12 Improvements in or relating to electric lamps for use with rafts, life-jackets, buoys and other buoyant marine life-saving apparatus

Publications (1)

Publication Number Publication Date
GB537353A true GB537353A (en) 1941-06-18

Family

ID=9779811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB457940A Expired GB537353A (en) 1940-03-12 1940-03-12 Improvements in or relating to electric lamps for use with rafts, life-jackets, buoys and other buoyant marine life-saving apparatus

Country Status (1)

Country Link
GB (1) GB537353A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176005A (en) * 1985-06-06 1986-12-10 William Guy Fletcher Liquid level indicators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176005A (en) * 1985-06-06 1986-12-10 William Guy Fletcher Liquid level indicators

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