GB191410549A - Improvements in Relays connected with Electric Signalling in Mines and the like. - Google Patents

Improvements in Relays connected with Electric Signalling in Mines and the like.

Info

Publication number
GB191410549A
GB191410549A GB191410549DA GB191410549A GB 191410549 A GB191410549 A GB 191410549A GB 191410549D A GB191410549D A GB 191410549DA GB 191410549 A GB191410549 A GB 191410549A
Authority
GB
United Kingdom
Prior art keywords
cores
parallel
mines
signalling
electro
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
Inventor
Henry Davies
Max John Railing
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191410549A publication Critical patent/GB191410549A/en
Expired legal-status Critical Current

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  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

10,549. Davies, H., and Railing, M. J. April 29. Electro-magnetic switches.-Relays for use in mines or other places having explosive atmospheres are constructed with an electro-magnet having parallel cores A, a spring or gravity controlled armature H mounted on an axis F parallel with the cores so as to rotate in front of and parallel with the pole-faces, and shortcircuited windings or conducting - sleeves E placed on the cores A for the purpose of checking inductive rise of voltage and thus suppressing sparking at the signalling-contacts. A dipping-contact K and mercury-cup L make and break a local circuit between terminals N, and the relay coils are connected to a battery and the signalling-lines by terminals M. Platinum or other contacts may be used. In a modification, a bipolar magnet and armature replace the four-pole form shown.
GB191410549D 1914-04-29 1914-04-29 Improvements in Relays connected with Electric Signalling in Mines and the like. Expired GB191410549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191410549T 1914-04-29

Publications (1)

Publication Number Publication Date
GB191410549A true GB191410549A (en) 1915-04-29

Family

ID=32583692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191410549D Expired GB191410549A (en) 1914-04-29 1914-04-29 Improvements in Relays connected with Electric Signalling in Mines and the like.

Country Status (1)

Country Link
GB (1) GB191410549A (en)

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