GB1206114A - Roof support suitable for use in mines - Google Patents

Roof support suitable for use in mines

Info

Publication number
GB1206114A
GB1206114A GB4896366A GB4896366A GB1206114A GB 1206114 A GB1206114 A GB 1206114A GB 4896366 A GB4896366 A GB 4896366A GB 4896366 A GB4896366 A GB 4896366A GB 1206114 A GB1206114 A GB 1206114A
Authority
GB
United Kingdom
Prior art keywords
jack
roof support
mines
advancing
support suitable
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
GB4896366A
Inventor
Richard John Hollis
Henry Belfield Reeves
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to GB4896366A priority Critical patent/GB1206114A/en
Publication of GB1206114A publication Critical patent/GB1206114A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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

Abstract

1,206,114. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. 15 Jan., 1968 [1 Nov., 1966], No. 48963/66. Heading E1P. In an advancing mine roof support having an advancing jack 5, 6 pivotally secured to a relay bar 13 the ram 6 of the jack has a slide member 4 welded thereto which slides in a guide member 3 on the base 1 and serves to protect the jack from bending moments.
GB4896366A 1966-11-01 1966-11-01 Roof support suitable for use in mines Expired GB1206114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4896366A GB1206114A (en) 1966-11-01 1966-11-01 Roof support suitable for use in mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4896366A GB1206114A (en) 1966-11-01 1966-11-01 Roof support suitable for use in mines

Publications (1)

Publication Number Publication Date
GB1206114A true GB1206114A (en) 1970-09-23

Family

ID=10450620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4896366A Expired GB1206114A (en) 1966-11-01 1966-11-01 Roof support suitable for use in mines

Country Status (1)

Country Link
GB (1) GB1206114A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2307954A1 (en) * 1973-02-17 1974-08-29 Bochumer Eisen Heintzmann SHIELD EXTENSION FRAME FOR UNDERGROUND STRUTS. @
DE2339650A1 (en) * 1973-08-04 1975-02-20 Gewerk Eisenhuette Westfalia EXTENSION FRAME, IN PARTICULAR FOR EXTRACTION PLANTS WITH LARGE CUTTING DEPTHS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2307954A1 (en) * 1973-02-17 1974-08-29 Bochumer Eisen Heintzmann SHIELD EXTENSION FRAME FOR UNDERGROUND STRUTS. @
DE2339650A1 (en) * 1973-08-04 1975-02-20 Gewerk Eisenhuette Westfalia EXTENSION FRAME, IN PARTICULAR FOR EXTRACTION PLANTS WITH LARGE CUTTING DEPTHS

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees