GB517589A - Improvements in and relating to miners' safety lamps - Google Patents

Improvements in and relating to miners' safety lamps

Info

Publication number
GB517589A
GB517589A GB2290238A GB2290238A GB517589A GB 517589 A GB517589 A GB 517589A GB 2290238 A GB2290238 A GB 2290238A GB 2290238 A GB2290238 A GB 2290238A GB 517589 A GB517589 A GB 517589A
Authority
GB
United Kingdom
Prior art keywords
miners
relating
safety
class
safety lamps
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
GB2290238A
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.)
GEORGE ARTHUR ATTACK
HAILWOOD AND ACKROYD Ltd
Original Assignee
GEORGE ARTHUR ATTACK
HAILWOOD AND ACKROYD 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 GEORGE ARTHUR ATTACK, HAILWOOD AND ACKROYD Ltd filed Critical GEORGE ARTHUR ATTACK
Priority to GB2290238A priority Critical patent/GB517589A/en
Publication of GB517589A publication Critical patent/GB517589A/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
    • F21L23/00—Non-electric hand-lamps for miners
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

517,589. Miners' safety lamps. HAILWOOD & ACKROYD, Ltd., and ATTACK, G. A. Aug. 3, 1938, No. 22902. [Class 75 (iv)] The inner glass G of a miner's safety lamp of the combustion tube type is formed on its outer surface with a groove G<2> below its rounded upper edge G' to receive a number of roundpointed supporting pins P carried by spring arms P<2> secured to a flange C<2> on the flared base of the lamp chimney C: Specification 18694/13, [Class 75 (iv)], is referred to.
GB2290238A 1938-08-03 1938-08-03 Improvements in and relating to miners' safety lamps Expired GB517589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2290238A GB517589A (en) 1938-08-03 1938-08-03 Improvements in and relating to miners' safety lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2290238A GB517589A (en) 1938-08-03 1938-08-03 Improvements in and relating to miners' safety lamps

Publications (1)

Publication Number Publication Date
GB517589A true GB517589A (en) 1940-02-02

Family

ID=10186905

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2290238A Expired GB517589A (en) 1938-08-03 1938-08-03 Improvements in and relating to miners' safety lamps

Country Status (1)

Country Link
GB (1) GB517589A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4006769A1 (en) * 1990-03-03 1991-09-05 Wila Leuchten Gmbh Compact fluorescent lamp overhead light fitting - has integral spotlight using parabolic inner reflectors to project beam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4006769A1 (en) * 1990-03-03 1991-09-05 Wila Leuchten Gmbh Compact fluorescent lamp overhead light fitting - has integral spotlight using parabolic inner reflectors to project beam

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