GB398056A - Improvements in electric signalling and control systems - Google Patents

Improvements in electric signalling and control systems

Info

Publication number
GB398056A
GB398056A GB3273032A GB3273032A GB398056A GB 398056 A GB398056 A GB 398056A GB 3273032 A GB3273032 A GB 3273032A GB 3273032 A GB3273032 A GB 3273032A GB 398056 A GB398056 A GB 398056A
Authority
GB
United Kingdom
Prior art keywords
relay
signalling
bell
lamp
circuit
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
GB3273032A
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.)
WILLIS HORABIN
Original Assignee
WILLIS HORABIN
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 WILLIS HORABIN filed Critical WILLIS HORABIN
Priority to GB3273032A priority Critical patent/GB398056A/en
Publication of GB398056A publication Critical patent/GB398056A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Selective Calling Equipment (AREA)

Abstract

398,056. Electric signalling and remote-control systems. HORABIN, W., Rock House, Stanton-Gate, Derbyshire. Nov. 19, 1932, No. 32730. [Class 40 (i).] The closure of a signalling circuit energizes a relay which completes a secondary circuit including a signalling device, such as a bell, and a slow-to-energize relay, which, on fully energizing, breaks the circuit of the signalling device and connects up a second device, such as a lamp, or completes a control circuit. When the wires 10 are connected, either by means of a switch 13 or by clipping the two wires together, relay 12 energizes, connecting relay 17 and a bell, not shown but connected across 21a, 21b, to the electric power leads connected to 16a, 16b. After a predetermined time, adjustable by dashpot 23, relay 17 makes contacts 26, 27 and breaks contacts 19, 20, replacing the bell by lamp 25. The lamp 25 may be replaced by a control circuit. The condenser 28 eliminates sparking.
GB3273032A 1932-11-19 1932-11-19 Improvements in electric signalling and control systems Expired GB398056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3273032A GB398056A (en) 1932-11-19 1932-11-19 Improvements in electric signalling and control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3273032A GB398056A (en) 1932-11-19 1932-11-19 Improvements in electric signalling and control systems

Publications (1)

Publication Number Publication Date
GB398056A true GB398056A (en) 1933-09-07

Family

ID=10343156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3273032A Expired GB398056A (en) 1932-11-19 1932-11-19 Improvements in electric signalling and control systems

Country Status (1)

Country Link
GB (1) GB398056A (en)

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