GB775662A - Improvements in or relating to electric torches - Google Patents

Improvements in or relating to electric torches

Info

Publication number
GB775662A
GB775662A GB29532/53A GB2953253A GB775662A GB 775662 A GB775662 A GB 775662A GB 29532/53 A GB29532/53 A GB 29532/53A GB 2953253 A GB2953253 A GB 2953253A GB 775662 A GB775662 A GB 775662A
Authority
GB
United Kingdom
Prior art keywords
casing
contact
torch
plunger
reflector
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
GB29532/53A
Inventor
John Chandler
John William Chandler
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.)
D S PLUGS Ltd
Original Assignee
D S PLUGS 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 D S PLUGS Ltd filed Critical D S PLUGS Ltd
Priority to GB29532/53A priority Critical patent/GB775662A/en
Publication of GB775662A publication Critical patent/GB775662A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54—Testing for continuity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H2085/0216—Tools for controlling fuses or the line associated with the fuses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

775,662. Electric tests. D.S. PLUGS, Ltd. Oct. 4, 1954 [Oct. 26, 1953], No. 29532/55. Class 37. [Also in Group XI] An electric torch or flash lamp, of the type having a metal casing 10 which houses a battery 11 and is included in the circuit between the battery and the bulb 13 when the latter is illuminated, is adapted for the testing of cartridge fuses or the continuity of a circuit by providing on the casing an auxiliary external contact 19 which is completely and permanently exposed and insulated from the casing, so that when one end of a conductor is placed on the contact 19 and the other end on the casing 10, the lamp will be illuminated. In the example the auxiliary contact 19 is substantially in the form of a bifurcated rivet with its head insulated from the casing by a disc 20 provided with a tubular shank through which the two retaining limbs of the rivet are inserted, one limb 21 being shown extended upwardly to bear upon a conical reflector 15 which is held in position by a lens 16 secured in the upper end of the casing. A convention switch 16a can be operated to bring aal contact strip 17 against the reflector 15 for normal operation of the torch. In a modification, Fig. 4 (not shown), the auxiliary contact comprises a small slidable plunger which is normally pressed radially outward of the casing by a surrounding helical spring, the part of the plunger within the casing being provided with a lateral contact stem which is normally held apart from the adjacent end of a contact strip mounted on the end of the reflector. In testing a cartridge fuse one end is held against the torch casing and the other end pressed down upon the plunger.
GB29532/53A 1953-10-26 1953-10-26 Improvements in or relating to electric torches Expired GB775662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB29532/53A GB775662A (en) 1953-10-26 1953-10-26 Improvements in or relating to electric torches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29532/53A GB775662A (en) 1953-10-26 1953-10-26 Improvements in or relating to electric torches

Publications (1)

Publication Number Publication Date
GB775662A true GB775662A (en) 1957-05-29

Family

ID=10293023

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29532/53A Expired GB775662A (en) 1953-10-26 1953-10-26 Improvements in or relating to electric torches

Country Status (1)

Country Link
GB (1) GB775662A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480440A1 (en) * 1980-04-09 1981-10-16 Herrmann Henry Combined safety lamp and fuse continuity tester - comprises fuse holder in series with lamp and battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480440A1 (en) * 1980-04-09 1981-10-16 Herrmann Henry Combined safety lamp and fuse continuity tester - comprises fuse holder in series with lamp and battery

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