FR640620A - Improvements to signaling devices for mines, wells and other similar sites - Google Patents

Improvements to signaling devices for mines, wells and other similar sites

Info

Publication number
FR640620A
FR640620A FR640620DA FR640620A FR 640620 A FR640620 A FR 640620A FR 640620D A FR640620D A FR 640620DA FR 640620 A FR640620 A FR 640620A
Authority
FR
France
Prior art keywords
mines
wells
signaling devices
similar sites
sites
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
Other languages
French (fr)
Inventor
Arthur Ernest Moore
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 filed Critical
Application granted granted Critical
Publication of FR640620A publication Critical patent/FR640620A/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)
  • Mechanically-Actuated Valves (AREA)
FR640620D 1926-08-05 1927-08-05 Improvements to signaling devices for mines, wells and other similar sites Expired FR640620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1934726A GB279189A (en) 1926-08-05 1926-08-05 Improvements in or relating to signalling apparatus used in mines, shafts and like places

Publications (1)

Publication Number Publication Date
FR640620A true FR640620A (en) 1928-07-18

Family

ID=10127817

Family Applications (1)

Application Number Title Priority Date Filing Date
FR640620D Expired FR640620A (en) 1926-08-05 1927-08-05 Improvements to signaling devices for mines, wells and other similar sites

Country Status (2)

Country Link
FR (1) FR640620A (en)
GB (1) GB279189A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8100479B2 (en) * 2006-08-11 2012-01-24 Battelle Memorial Institute Miner acoustic communication and location system
CN113217079B (en) * 2021-03-01 2023-07-14 柴兆喜 Pressure equalizing circulation mine gas extraction coal hole
CN113309559A (en) * 2021-06-09 2021-08-27 中建八局广西建设有限公司 Tunnel escape pipeline installation device and installation method thereof

Also Published As

Publication number Publication date
GB279189A (en) 1927-10-27

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