GB528077A - Improved electric battery lamp - Google Patents

Improved electric battery lamp

Info

Publication number
GB528077A
GB528077A GB12574/39A GB1257439A GB528077A GB 528077 A GB528077 A GB 528077A GB 12574/39 A GB12574/39 A GB 12574/39A GB 1257439 A GB1257439 A GB 1257439A GB 528077 A GB528077 A GB 528077A
Authority
GB
United Kingdom
Prior art keywords
battery
electric battery
casing
improved electric
battery lamp
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
GB12574/39A
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.)
WILLIAM EWART SMITH
Original Assignee
WILLIAM EWART SMITH
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 WILLIAM EWART SMITH filed Critical WILLIAM EWART SMITH
Priority to GB12574/39A priority Critical patent/GB528077A/en
Publication of GB528077A publication Critical patent/GB528077A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

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

Abstract

528,077. Electric battery lamps; casings for galvanic batteries. HODGKISS, T. A., and SMITH, W.E. April 27, 1939, No. 12574. Drawings to Specification. [Class 39 (ii)] [Also in Group XXXVI] The casing of a battery, particularly that of a miner's lamp where the battery is locked within the casing is provided with a small window at its side so that a piece of wadding saturated with litmus or pheno-phthalein may be viewed through it to see when leakage of acid occurs from the battery into the casing.
GB12574/39A 1939-04-27 1939-04-27 Improved electric battery lamp Expired GB528077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB12574/39A GB528077A (en) 1939-04-27 1939-04-27 Improved electric battery lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12574/39A GB528077A (en) 1939-04-27 1939-04-27 Improved electric battery lamp

Publications (1)

Publication Number Publication Date
GB528077A true GB528077A (en) 1940-10-22

Family

ID=10007162

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12574/39A Expired GB528077A (en) 1939-04-27 1939-04-27 Improved electric battery lamp

Country Status (1)

Country Link
GB (1) GB528077A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922833A (en) * 1955-02-28 1960-01-26 Accumulatoren Fabrik Ag Fa Pressure responsive safety device
US2980754A (en) * 1959-03-23 1961-04-18 Union Carbide Corp Cell exhaustion indicator
US3046786A (en) * 1958-08-12 1962-07-31 Honeywell Regulator Co Condition responsive device
US5132176A (en) * 1990-05-03 1992-07-21 Gnb Industrial Battery Company Battery state of charge indicator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922833A (en) * 1955-02-28 1960-01-26 Accumulatoren Fabrik Ag Fa Pressure responsive safety device
US3046786A (en) * 1958-08-12 1962-07-31 Honeywell Regulator Co Condition responsive device
US2980754A (en) * 1959-03-23 1961-04-18 Union Carbide Corp Cell exhaustion indicator
US5132176A (en) * 1990-05-03 1992-07-21 Gnb Industrial Battery Company Battery state of charge indicator

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