GB640414A - Improvements in props - Google Patents

Improvements in props

Info

Publication number
GB640414A
GB640414A GB7017/48A GB701748A GB640414A GB 640414 A GB640414 A GB 640414A GB 7017/48 A GB7017/48 A GB 7017/48A GB 701748 A GB701748 A GB 701748A GB 640414 A GB640414 A GB 640414A
Authority
GB
United Kingdom
Prior art keywords
ram
cylinder
compressed air
valve
liquid
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
GB7017/48A
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.)
Mavor and Coulson Ltd
Original Assignee
Mavor and Coulson 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 Mavor and Coulson Ltd filed Critical Mavor and Coulson Ltd
Priority to GB7017/48A priority Critical patent/GB640414A/en
Priority to NL150091A priority patent/NL71059C/xx
Priority to US130839A priority patent/US2638075A/en
Priority to DEM771A priority patent/DE872192C/de
Priority to FR1001031D priority patent/FR1001031A/fr
Publication of GB640414A publication Critical patent/GB640414A/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
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • 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
    • E21D15/46—Telescopic props with load-measuring devices; with alarm devices
    • E21D15/465—Telescopic props with load-measuring devices; with alarm devices with essential hydraulic or pneumatic details

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)
  • Fluid-Pressure Circuits (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
GB7017/48A 1948-03-06 1948-03-06 Improvements in props Expired GB640414A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB7017/48A GB640414A (en) 1948-03-06 1948-03-06 Improvements in props
NL150091A NL71059C (enrdf_load_stackoverflow) 1948-03-06 1949-11-24
US130839A US2638075A (en) 1948-03-06 1949-12-02 Pneumatically controlled hydraulic prop
DEM771A DE872192C (de) 1948-03-06 1949-12-03 Grubenstempel
FR1001031D FR1001031A (fr) 1948-03-06 1949-12-06 étai extensible perfectionné

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7017/48A GB640414A (en) 1948-03-06 1948-03-06 Improvements in props

Publications (1)

Publication Number Publication Date
GB640414A true GB640414A (en) 1950-07-19

Family

ID=9825052

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7017/48A Expired GB640414A (en) 1948-03-06 1948-03-06 Improvements in props

Country Status (5)

Country Link
US (1) US2638075A (enrdf_load_stackoverflow)
DE (1) DE872192C (enrdf_load_stackoverflow)
FR (1) FR1001031A (enrdf_load_stackoverflow)
GB (1) GB640414A (enrdf_load_stackoverflow)
NL (1) NL71059C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023435B (de) * 1951-06-09 1958-01-30 Eisenwerk Wanheim G M B H Hydraulischer Grubenstempel
DE973341C (de) * 1951-03-13 1960-01-28 Ewald Wiemann Maschf Ventil fuer hydraulische Grubenstempel

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL191038A (enrdf_load_stackoverflow) * 1953-09-24 1900-01-01
US2830563A (en) * 1954-03-26 1958-04-15 Burton B Burckhalter Automatic jack leg
BE553227A (enrdf_load_stackoverflow) * 1955-06-10
DE1078516B (de) * 1956-07-17 1960-03-31 Bwg Bergwerk Walzwerk Nachgiebiger hydraulischer Grubenstempel
DE1089349B (de) * 1957-04-15 1960-09-22 Hermann Schwarz Kommanditgesel Mehrteiliges Stuetzelement fuer den Grubenausbau
US2984000A (en) * 1957-05-01 1961-05-16 Taylor Wilson Mfg Company Pipe coupling screw-on machine controls
DE1143469B (de) * 1957-07-30 1963-02-14 Gewerk Eisenhuette Westfalia Ventil zur Steuerung hydraulicher Ausbaugestelle fuer bergmaennische Gewinnungsbetriebe
US2970577A (en) * 1958-01-28 1961-02-07 Anderson Clayton & Co Hydraulic lift
DE1193458B (de) * 1958-08-11 1965-05-26 Dobson Ltd W E & F Wandernder Grubenausbau
DE1168849B (de) * 1958-10-30 1964-04-30 Wilhelm Steinkopf Hydraulischer Grubenstempel
NL248713A (enrdf_load_stackoverflow) * 1959-02-23
US3112676A (en) * 1959-06-16 1963-12-03 Amalgamated Dental Co Ltd Hoist
GB962543A (en) * 1959-08-21 1964-07-01 Acrow Eng Ltd Improvements in and relating to hydraulic props
DE1244092B (de) * 1963-08-17 1967-07-13 Glueckauf Guenther Klerner Mas Sicherungsvorrichtung fuer die Abspannvorrichtung eines Strebfoerderers
DE1229966B (de) * 1964-06-25 1966-12-08 Hoesch Bergbautechnik G M B H Doppeltwirkender hydraulischer Grubenstempel
DE1301026B (de) * 1964-11-14 1969-08-14 Reinhard Hoernlein Kg Holz Und Hydropneumatisches Hebeaggregat, insbesondere fuer hoehenverstellbare Tische und Stuehle
US3311026A (en) * 1965-12-27 1967-03-28 Caterpillar Tractor Co Bypass valve for hydraulic jacks
US3415342A (en) * 1967-06-28 1968-12-10 Joyce Cridland Co Vehicle lifting apparatus
US3693500A (en) * 1970-06-01 1972-09-26 Gilbert & Barker Mfg Co Fluid pressure controlled power unit
FR2300894A1 (fr) * 1975-02-12 1976-09-10 Bennes Marrel Dispo
FR2358412A1 (fr) * 1976-07-13 1978-02-10 Parcor Procede de preparation de la vincamine et d'alcaloides apparentes
US4281585A (en) * 1978-03-13 1981-08-04 The Bendix Corporation Hydraulic brake booster and valve member
US5516070A (en) * 1990-10-01 1996-05-14 Leonard Studio Equipment, Inc. Camera pedestal drive column
DE102007029017B4 (de) * 2007-06-23 2009-12-17 Herrmann Ag Vorrichtung zum Heben von Objekten, insbesondere für Fahrzeuge
DE202007016572U1 (de) * 2007-11-27 2008-02-21 It Industrietechnik Ltd. Ausbaustütze für den untertägigen Berg- und Tunnelbau
US20130193626A1 (en) * 2012-01-31 2013-08-01 Alphonso Woodburn Adjustable height turntable device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1797297A (en) * 1931-03-24 Begtrlating vaiate
US250103A (en) * 1881-11-29 reynolds
US1299668A (en) * 1918-04-10 1919-04-08 August Blomquist Air lifting-jack.
US2085961A (en) * 1929-04-03 1937-07-06 John G Dorward Hydraulic lift
US1899534A (en) * 1930-05-05 1933-02-28 Curtis Mfg Co Automobile lift
DE621526C (de) * 1933-02-10 1935-11-08 Hugo Schramm Aus zwei ineinanderverschiebbaren Teilen bestehender nachgiebiger Grubenstempel
US2336808A (en) * 1941-11-21 1943-12-14 Globe Hoist Co Hydraulic hoist

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973341C (de) * 1951-03-13 1960-01-28 Ewald Wiemann Maschf Ventil fuer hydraulische Grubenstempel
DE1023435B (de) * 1951-06-09 1958-01-30 Eisenwerk Wanheim G M B H Hydraulischer Grubenstempel

Also Published As

Publication number Publication date
US2638075A (en) 1953-05-12
FR1001031A (fr) 1952-02-19
DE872192C (de) 1953-03-30
NL71059C (enrdf_load_stackoverflow) 1952-10-15

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