GB971697A - Improvements in mine roof supports and advancing mechanisms therefor - Google Patents

Improvements in mine roof supports and advancing mechanisms therefor

Info

Publication number
GB971697A
GB971697A GB3801660A GB3801660A GB971697A GB 971697 A GB971697 A GB 971697A GB 3801660 A GB3801660 A GB 3801660A GB 3801660 A GB3801660 A GB 3801660A GB 971697 A GB971697 A GB 971697A
Authority
GB
United Kingdom
Prior art keywords
mine roof
roof supports
rack
mechanisms therefor
advancing mechanisms
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
GB3801660A
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.)
Rheinstahl Wanheim GmbH
Original Assignee
Rheinstahl Wanheim GmbH
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 Rheinstahl Wanheim GmbH filed Critical Rheinstahl Wanheim GmbH
Publication of GB971697A publication Critical patent/GB971697A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

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)
  • Transmission Devices (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

971,697. Advancing mine roof supports. RHEINSTAHL WANHEIM G.m.b.H. Nov. 4, 1960 [Jan. 22, 1960], No. 38016/60. Heading E1E. In an advancing mine roof support comprising frames A, B alternately advanced by a power-driven rack and pinion mechanism 11, 12, 14, the racks 14 are guided in a transmission housing 13 which is of I-section with inturned flanges 10b and has a length corresponding to that of a rack. Rack projections 10c are secured by releasable pins 15 to claws 16 vertically guided in the 5, 6. Specification 951,593 is referred to.
GB3801660A 1960-01-22 1960-11-04 Improvements in mine roof supports and advancing mechanisms therefor Expired GB971697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER27163A DE1146465B (en) 1960-01-22 1960-01-22 Feed device for mining operations

Publications (1)

Publication Number Publication Date
GB971697A true GB971697A (en) 1964-09-30

Family

ID=7402386

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3801660A Expired GB971697A (en) 1960-01-22 1960-11-04 Improvements in mine roof supports and advancing mechanisms therefor

Country Status (2)

Country Link
DE (1) DE1146465B (en)
GB (1) GB971697A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1207318B (en) * 1963-07-26 1965-12-23 Roger Louis Redhaber Striding expansion team for mining operations
DE1214629B (en) * 1964-07-07 1966-04-21 Konrad Grebe Feed device for an expansion team
DE1280183B (en) * 1964-11-17 1968-10-17 Dowty Mining Equipment Ltd Wandering longwall mining

Also Published As

Publication number Publication date
DE1146465B (en) 1963-04-04

Similar Documents

Publication Publication Date Title
GB971697A (en) Improvements in mine roof supports and advancing mechanisms therefor
CA594133A (en) Hydroxynitriles as flotation modifiers
CA573185A (en) Greenhouse roof bar assembly
CA624259A (en) Solution mining
AU290833B2 (en) Improvements relating to advancing mine roof supports
AU242872B2 (en) Improvements relating to electrolytic furnaces
CA607524A (en) Boring bar
AU245034B2 (en) Adipic acid production
AU257938B2 (en) Adipic acid production
AU244566B2 (en) Injectable solution
AU4821064A (en) Improvements relating to advancing mine roof supports
AU258551B2 (en) Electrolytic cell or reaction unit
CA617921A (en) Roof bar arrangements, especially for mines
CA592344A (en) Promoted carbonylation reaction
CA597050A (en) Gluconic acid monohydrate
CA589126A (en) Boring bar
AU6780660A (en) Improvements relating to electrolytic furnaces
AU238924B2 (en) Iodised acid amides
CA687760A (en) Reaction of chlorides with nitric acid
CA597980A (en) Mine door
AU272101B2 (en) Improved nts in or relating to window guide means
CA583916A (en) Rigid boring bar
AU266069B2 (en) Improvements relating to driving mechanism
AU829961A (en) Adipic acid production
AU246559B2 (en) Acrylonitrile recovery process