GB489182A - Improvements in or relating to electric battery lamps - Google Patents

Improvements in or relating to electric battery lamps

Info

Publication number
GB489182A
GB489182A GB255037A GB255037A GB489182A GB 489182 A GB489182 A GB 489182A GB 255037 A GB255037 A GB 255037A GB 255037 A GB255037 A GB 255037A GB 489182 A GB489182 A GB 489182A
Authority
GB
United Kingdom
Prior art keywords
battery
contact
chamber
casing
bulb
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
GB255037A
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.)
MAURICE COKER TERRY
WER MVL 1998 Ltd
Original Assignee
MAURICE COKER TERRY
Ever Ready Co Great Britain 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 MAURICE COKER TERRY, Ever Ready Co Great Britain Ltd filed Critical MAURICE COKER TERRY
Priority to GB255037A priority Critical patent/GB489182A/en
Publication of GB489182A publication Critical patent/GB489182A/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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/005—Electric lighting devices with self-contained electric batteries or cells the device being a pocket lamp
    • 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
    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/12—Flameproof or explosion-proof arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

489,182. Electric - battery lamps. EVER READY CO. (GREAT BRITAIN). Ltd., and TERRY. M. C. Jan. 28, 1937, No. 2550. [Class 39 (ii)] An electric-battery lamp is provided with a gas-tight contact chamber 5 formed within a block 4 of insulating material and housing two contact members 8, 11 which are normally held apart by a compressed spring 10, so that the upper end of the contact 8 is maintained in permanent abutment with the centre contact 19 of the lamp bulb, whereby upon relative movement between the bulb-carrying head and the chamber 5 the contact 8 is pressed against the contact 11 to complete the battery circuit, the contact 11 being normally in electrical connection with the battery 20. The contact 11 is mounted on a helical spring 13 located within a metal cup 12 which is secured to an insulating disc 6 forming the bottom of the chamber 5, and the centre contact of the battery 20 is held against the cup 12 by a helical spring between the bottom of the battery and the casing. Alternatively a flexible lead may connect the cup 12 to one pole of the battery, a return lead being provided between the bulb-carrying head and the other pole of the battery, thus enabling the battery to be carried as a separate unit in the pocket. The insulating block 4 is screwed into the upper end of the battery casing 1 which is screw-threaded externally so that the head 3 can be screwed downwardly thereon to switch on the light. A gas-tight and watertight connection is provided by a packing- ring 29 within a recess in the periphery of the casing located beneath a smooth unthreaded portion at the lower end of the cap 3. A sealed connection is also provided at the joint between the reflector 16 and cover glass 18 by packing-material 32 which is pressed against a flange 31 by means of a screwthreaded disc 30 located against the underside of the reflector. The bottom of the casing may be sealed either by soldering thereon the end cover 27 or, if screw-threaded, by a packing- ring 28. The plunger 8 fits closely within an aperture 7 into the chamber 5, so that an approximately gas-tight fit is provided. The chamber 5 and interior of the torch may be filled with an inert gas, or the chamber may be packed with an acid-free grease. The bulb holder 17 is a push fit within a neck 16a on the lower end of the reflector. In a modification the insulating block 4 is held in position by a bayonet-joint connection, and a similar connection is provided between the cap 3 and the torch casing.
GB255037A 1937-01-28 1937-01-28 Improvements in or relating to electric battery lamps Expired GB489182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB255037A GB489182A (en) 1937-01-28 1937-01-28 Improvements in or relating to electric battery lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB255037A GB489182A (en) 1937-01-28 1937-01-28 Improvements in or relating to electric battery lamps

Publications (1)

Publication Number Publication Date
GB489182A true GB489182A (en) 1938-07-21

Family

ID=9741563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB255037A Expired GB489182A (en) 1937-01-28 1937-01-28 Improvements in or relating to electric battery lamps

Country Status (1)

Country Link
GB (1) GB489182A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008000438U1 (en) 2008-01-11 2009-05-07 Pöllet, Wilfried Lamp with push-button
FR2927735A1 (en) * 2008-02-14 2009-08-21 Raymond Bertois Electrical apparatus i.e. submarine diving lamp, for use by diver, has lock system rigidly joining support and front connection plate by being locked by external case when case is closed and disconnecting support and plate when case is open

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008000438U1 (en) 2008-01-11 2009-05-07 Pöllet, Wilfried Lamp with push-button
FR2927735A1 (en) * 2008-02-14 2009-08-21 Raymond Bertois Electrical apparatus i.e. submarine diving lamp, for use by diver, has lock system rigidly joining support and front connection plate by being locked by external case when case is closed and disconnecting support and plate when case is open

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