GB505451A - Improvements in or connected with steel posts, props, pillars and the like, particularly posts for use in mines - Google Patents

Improvements in or connected with steel posts, props, pillars and the like, particularly posts for use in mines

Info

Publication number
GB505451A
GB505451A GB3144337A GB3144337A GB505451A GB 505451 A GB505451 A GB 505451A GB 3144337 A GB3144337 A GB 3144337A GB 3144337 A GB3144337 A GB 3144337A GB 505451 A GB505451 A GB 505451A
Authority
GB
United Kingdom
Prior art keywords
bracket
wedge
bar
posts
clamping member
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
GB3144337A
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.)
GEORGE MACDONALD BUCHANAN
Mavor and Coulson Ltd
Original Assignee
GEORGE MACDONALD BUCHANAN
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 GEORGE MACDONALD BUCHANAN, Mavor and Coulson Ltd filed Critical GEORGE MACDONALD BUCHANAN
Priority to GB3144337A priority Critical patent/GB505451A/en
Publication of GB505451A publication Critical patent/GB505451A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type

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)
  • Clamps And Clips (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

505,451. Brackets for posts, props, &c. MAVOR & COULSON, Ltd., and BUCHANAN, G. M. Nov. 16, 1937, No. 31443. [Classes 20 (i) and 20 (ii)] [Also in Group XIV] A bracket 4 is supported wholly by friction on a H- or I-section bar by providing the bracket with wedgepieces 7 which taper inwardly towards the web of the section-bar B, and are adapted to be forced into contact with the inside surfaces of opposed flanges of the bar by means of a clamping member 5, embracing the section bar. The clamping member may comprise a U-shaped saddle with rear wedge piece 10 and apertured limbs to receive a transverse wedge 8 bearing against the bracket. Alternatively, the clamping member may comprise bolts 14, Fig. 6, pivoted to the bracket and a wedge-shaped rear clamping bar 15, secured' by wing-nuts to the bolts. Upstanding projections are provided on the upper face of the bracket to receive a wedge 13 between them for supporting a cross-member. A separate wedge may be used at the rear of the saddle to clamp the bracket to the post.
GB3144337A 1937-11-16 1937-11-16 Improvements in or connected with steel posts, props, pillars and the like, particularly posts for use in mines Expired GB505451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3144337A GB505451A (en) 1937-11-16 1937-11-16 Improvements in or connected with steel posts, props, pillars and the like, particularly posts for use in mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3144337A GB505451A (en) 1937-11-16 1937-11-16 Improvements in or connected with steel posts, props, pillars and the like, particularly posts for use in mines

Publications (1)

Publication Number Publication Date
GB505451A true GB505451A (en) 1939-05-11

Family

ID=10323162

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3144337A Expired GB505451A (en) 1937-11-16 1937-11-16 Improvements in or connected with steel posts, props, pillars and the like, particularly posts for use in mines

Country Status (1)

Country Link
GB (1) GB505451A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471675A (en) * 1944-08-28 1949-05-31 Lou R Crandall Poultry house
DE851036C (en) * 1942-04-10 1952-09-29 Gutehoffnungshuette Oberhausen Pit punch with console arranged on the inner punch
DE852235C (en) * 1943-03-09 1952-10-13 Gutehoffnungshuette Oberhausen Attachment, especially for wooden pit stamps
DE959725C (en) * 1941-01-18 1957-03-14 Gerlach Karl Steel pit stamp
DE973606C (en) * 1944-01-27 1960-05-19 F W Moll Soehne Maschinenfabri Longwall construction with caps and stamps

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959725C (en) * 1941-01-18 1957-03-14 Gerlach Karl Steel pit stamp
DE851036C (en) * 1942-04-10 1952-09-29 Gutehoffnungshuette Oberhausen Pit punch with console arranged on the inner punch
DE852235C (en) * 1943-03-09 1952-10-13 Gutehoffnungshuette Oberhausen Attachment, especially for wooden pit stamps
DE973606C (en) * 1944-01-27 1960-05-19 F W Moll Soehne Maschinenfabri Longwall construction with caps and stamps
US2471675A (en) * 1944-08-28 1949-05-31 Lou R Crandall Poultry house

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