GB401330A - Improvements in or relating to pit props - Google Patents

Improvements in or relating to pit props

Info

Publication number
GB401330A
GB401330A GB3892/32A GB389232A GB401330A GB 401330 A GB401330 A GB 401330A GB 3892/32 A GB3892/32 A GB 3892/32A GB 389232 A GB389232 A GB 389232A GB 401330 A GB401330 A GB 401330A
Authority
GB
United Kingdom
Prior art keywords
wedge
prop
members
screw
received
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
GB3892/32A
Other languages
English (en)
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.)
Bochumer Eisenhuette Heintzmann GmbH and Co KG
Original Assignee
Bochumer Eisenhuette Heintzmann GmbH and Co KG
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
Priority to BE386166A priority Critical patent/BE386166A/fr
Application filed by Bochumer Eisenhuette Heintzmann GmbH and Co KG filed Critical Bochumer Eisenhuette Heintzmann GmbH and Co KG
Priority to GB3892/32A priority patent/GB401330A/en
Publication of GB401330A publication Critical patent/GB401330A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/60—Devices for withdrawing props or chocks
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
GB3892/32A 1932-02-09 1932-02-09 Improvements in or relating to pit props Expired GB401330A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE386166A BE386166A (enrdf_load_stackoverflow) 1932-02-09 1932-02-02
GB3892/32A GB401330A (en) 1932-02-09 1932-02-09 Improvements in or relating to pit props

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3892/32A GB401330A (en) 1932-02-09 1932-02-09 Improvements in or relating to pit props

Publications (1)

Publication Number Publication Date
GB401330A true GB401330A (en) 1933-11-09

Family

ID=9766831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3892/32A Expired GB401330A (en) 1932-02-09 1932-02-09 Improvements in or relating to pit props

Country Status (2)

Country Link
BE (1) BE386166A (enrdf_load_stackoverflow)
GB (1) GB401330A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559696A (en) * 1947-07-11 1951-07-10 John E Anderson Trestle bracket
DE757802C (de) * 1939-11-15 1953-11-23 Wilhelm Hinselmann Eiserner Grubenstempel
DE927148C (de) * 1938-12-28 1955-05-02 Karl Gerlach Stahlgrubenstempel
DE937341C (de) * 1937-08-20 1956-01-05 Karl Gerlach Grubenstempel
DE973953C (de) * 1948-05-21 1960-07-28 Gerlach Karl Setzvorrichtung fuer Stahlstempel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937341C (de) * 1937-08-20 1956-01-05 Karl Gerlach Grubenstempel
DE927148C (de) * 1938-12-28 1955-05-02 Karl Gerlach Stahlgrubenstempel
DE757802C (de) * 1939-11-15 1953-11-23 Wilhelm Hinselmann Eiserner Grubenstempel
US2559696A (en) * 1947-07-11 1951-07-10 John E Anderson Trestle bracket
DE973953C (de) * 1948-05-21 1960-07-28 Gerlach Karl Setzvorrichtung fuer Stahlstempel

Also Published As

Publication number Publication date
BE386166A (enrdf_load_stackoverflow) 1932-03-31

Similar Documents

Publication Publication Date Title
GB1323873A (en) Tubular rivet
GB401330A (en) Improvements in or relating to pit props
GB475560A (en) Improvements in mine props or the like
GB840741A (en) Improvements relating to anchor bolts
GB396454A (en) Improvements in or relating to pit props and chock pieces for use in coal mines and the like
GB433831A (en) Improvements in or relating to pit props
GB453684A (en) Improvements in the setting of two-part iron pit props
GB720383A (en) Improvements in or relating to hydraulic pit props, chocks and like hydraulic miningappliances, hydraulic jacks and the like
GB448824A (en) Improvements in and relating to pit-props
GB410565A (en) Improvements in or relating to chock releases for use in mines and similar workings
GB711603A (en) Improvements in and relating to yielding pit-props
GB390027A (en) A releasing device for attachment to existing pit props of section metal, tubes or timber
GB337617A (en) Improvements in or relating to rock drills
GB433504A (en) Improvements in electromagnetic and other brakes
GB404102A (en) Improvements in or relating to piston rings
GB428612A (en) Yieldable pit prop
GB552833A (en) Improvements in and relating to pit props
SU21521A1 (ru) Приспособление к прокатному стану дл определени давлений и трени при прокатке
ES165009U (es) Una pieza de anclaje de tipo cuña.
GB369212A (en) Improvements in or relating to pit props
GB443273A (en) Improvements in resilient iron mine props
GB407321A (en) Improvements in, or relating to, pit props
GB742788A (en) An improved pit prop made of steel or light metal
GB550650A (en) Roof supports for coal mines
GB401369A (en) Improvements in or relating to pit props