GB269571A - Improvements in or relating to gallery or other props - Google Patents

Improvements in or relating to gallery or other props

Info

Publication number
GB269571A
GB269571A GB10222/27A GB1022227A GB269571A GB 269571 A GB269571 A GB 269571A GB 10222/27 A GB10222/27 A GB 10222/27A GB 1022227 A GB1022227 A GB 1022227A GB 269571 A GB269571 A GB 269571A
Authority
GB
United Kingdom
Prior art keywords
props
recess
cam
gallery
relating
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
GB10222/27A
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
Publication of GB269571A publication Critical patent/GB269571A/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
    • E21D15/28—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)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Braking Arrangements (AREA)
  • Clamps And Clips (AREA)
  • Emergency Lowering Means (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

269,571. Pelabon, C. L. April 16, 1926, [Convention date]. Mine props are formed with an upper I-section iron a and a lower channel-section iron c, the two parts being relatively adjustable and secured together with a predetermined pressure by means of an enclosing band d and a pivoted cam g operated by a lever i. In a recess on the side of the band opposite the cam is disposed a friction pad e which prevents slip and removable packing may be inserted in the recess beneath the pad to take up wear.
GB10222/27A 1926-04-16 1927-04-13 Improvements in or relating to gallery or other props Expired GB269571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE333312A BE333312A (en) 1926-04-16 1926-04-16

Publications (1)

Publication Number Publication Date
GB269571A true GB269571A (en) 1927-08-04

Family

ID=12101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10222/27A Expired GB269571A (en) 1926-04-16 1927-04-13 Improvements in or relating to gallery or other props

Country Status (4)

Country Link
BE (2) BE333312A (en)
DE (1) DE507981C (en)
FR (1) FR632897A (en)
GB (1) GB269571A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890854A (en) * 1956-01-09 1959-06-16 Gutehoffnungshuette Sterkrade Torsion pit prop
US20070261338A1 (en) * 2006-05-12 2007-11-15 Mccracken Robert Spring assembly for reshore posts

Also Published As

Publication number Publication date
DE507981C (en) 1930-09-22
BE333312A (en) 1926-05-31
FR632897A (en) 1928-01-16
BE335281R (en) 1926-08-31

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