GB991007A - Mining apparatus - Google Patents

Mining apparatus

Info

Publication number
GB991007A
GB991007A GB20198/62A GB2019862A GB991007A GB 991007 A GB991007 A GB 991007A GB 20198/62 A GB20198/62 A GB 20198/62A GB 2019862 A GB2019862 A GB 2019862A GB 991007 A GB991007 A GB 991007A
Authority
GB
United Kingdom
Prior art keywords
piston
advancing
supports
conduit
roof
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
GB20198/62A
Inventor
Michael Charles Potts
Douglas Herbert Hewlett Bolton
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 GB20179/63A priority Critical patent/GB991012A/en
Priority to GB20198/62A priority patent/GB991007A/en
Priority to DED41599A priority patent/DE1189504B/en
Priority to DED41616A priority patent/DE1176087B/en
Priority to US282412A priority patent/US3217603A/en
Priority to US282396A priority patent/US3228300A/en
Priority to FR936001A priority patent/FR1356892A/en
Priority to FR936000A priority patent/FR1356891A/en
Publication of GB991007A publication Critical patent/GB991007A/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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith
    • 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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • 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
    • E21D23/12—Control, e.g. using remote control
    • E21D23/14—Effecting automatic sequential movement of supports, e.g. one behind the other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8326—Fluid pressure responsive indicator, recorder or alarm

Abstract

991,007. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. May 21, 1963 [May 25, 1962], No. 20198/62. Heading F1P. [Also in Division G4] In a roof support assembly wherein a series of fluid pressure operated roof supports are advanceable in a predetermined sequence, the number of roof supports advanced, is counted by means sensitive to variations in the condition of. fluid in a conduit along which fluid flows when each support undergoes an advancing operation. As shown, the number of supports advanced is recorded by a counter 20 sensitive to changes in pressure in a supply conduit connected to the roof supports. The counter 20 comprises a piston 24 slidable in a bore 25, and having a piston rod 23 connected by a lever 22 to the operating shaft 21 of a counting mechanism 18 which has a display window 19. The piston 24 is continuously urged towards a stop 27 by a spring 28 and by fluid pressure supplied to the bore 25 through a port 29. Pressure in the supply conduit is communicated through a port 32 to a chamber 31 so that each time a roof support undergoes an advancing operation, the fall in pressure which occurs in the supply conduit allows the piston 24 to move to the position shown and thereby move the shaft 21 to add one to the number shown in the window 19. A port 34 of a piston housing 38 is connected to a further conduit which becomes pressurised when an advancing sequence has been completed to thereby move a piston rod 39 and return the counter to zero. In a second embodiment a flowmeter located in a return conduit from the supports, senses the advancing operations and operates a counting mechanism. Specification 991,008 is referred to.
GB20198/62A 1962-05-25 1962-05-25 Mining apparatus Expired GB991007A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB20179/63A GB991012A (en) 1962-05-25 1962-05-25 Roof support assembly
GB20198/62A GB991007A (en) 1962-05-25 1962-05-25 Mining apparatus
DED41599A DE1189504B (en) 1962-05-25 1963-05-21 Method and device for monitoring a migrating longwall structure
DED41616A DE1176087B (en) 1962-05-25 1963-05-22 Wandering longwall construction with step counter
US282412A US3217603A (en) 1962-05-25 1963-05-22 Mining apparatus
US282396A US3228300A (en) 1962-05-25 1963-05-22 Mining apparatus
FR936001A FR1356892A (en) 1962-05-25 1963-05-25 Mine support assembly comprising a device indicating the stop of the successive automatic advance of the roof supports
FR936000A FR1356891A (en) 1962-05-25 1963-05-25 Mine support set comprising a device for counting the number of roof supports having automatically advanced

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20198/62A GB991007A (en) 1962-05-25 1962-05-25 Mining apparatus

Publications (1)

Publication Number Publication Date
GB991007A true GB991007A (en) 1965-05-05

Family

ID=10142036

Family Applications (2)

Application Number Title Priority Date Filing Date
GB20179/63A Expired GB991012A (en) 1962-05-25 1962-05-25 Roof support assembly
GB20198/62A Expired GB991007A (en) 1962-05-25 1962-05-25 Mining apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB20179/63A Expired GB991012A (en) 1962-05-25 1962-05-25 Roof support assembly

Country Status (4)

Country Link
US (2) US3217603A (en)
DE (2) DE1189504B (en)
FR (2) FR1356892A (en)
GB (2) GB991012A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1023827A (en) * 1963-06-21 1966-03-23 Dowty Mining Equipment Ltd Roof support assembly
GB1022469A (en) * 1964-02-11 1966-03-16 Dowty Mining Equipment Ltd Roof support assembly suitable for use in mines
GB1123975A (en) * 1964-10-12 1968-08-14 Dowty Electrics Ltd Hydraulically-operated advancing mine roof supports
GB1126902A (en) * 1964-10-22 1968-09-11 Fairey Eng Improvements relating to hydraulic control systems
US3318328A (en) * 1965-05-26 1967-05-09 Combustion Eng Alarm system
FR1463082A (en) * 1965-10-22 1966-06-03 Botalam Installation for automatic control of hydraulic cylinders, or the like
US3455329A (en) * 1966-08-05 1969-07-15 Gabriel Roth Pneumatic indicating device
DE1583080A1 (en) * 1966-10-14 1970-04-23 Dowty Mining Equipment Ltd Pit ceiling extension
US3657964A (en) * 1969-07-14 1972-04-25 Gardner Denver Co Control system for nutsetter

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1312787A (en) * 1919-08-12 Intermittent-grip device
DE1069548B (en) * 1959-11-26
US627661A (en) * 1899-01-06 1899-06-27 Wilson E Symons Emergency-recorder for air-brakes.
US758819A (en) * 1902-10-28 1904-05-03 Robert G Callum Electric system for indicating the temperature of a distant point.
US2711634A (en) * 1949-05-25 1955-06-28 Joy Mfg Co Mine roof supporting means
US2753036A (en) * 1952-03-06 1956-07-03 Joy Mfg Co Mine roof support-equipped mining apparatus
US2749536A (en) * 1953-09-16 1956-06-05 Sperling Gustav Electrically operated leak detector
AT184539B (en) * 1954-04-12 1956-01-25 Kloeckner Bergbau Victor Icker Wandering expansion with expansion spans actuated by a pressure medium
US3045627A (en) * 1956-05-24 1962-07-24 Robert C Eck Depth control system
US2959156A (en) * 1956-08-03 1960-11-08 Sarl Ratier Aviat Marine Hydraulic servo-device for controlling linearly or rotatably movable members, with indication of the position thereof
FR1201174A (en) * 1957-08-10 1959-12-29 Gewerk Eisenhuette Westfalia Method and device for controlling a hydraulic support, usable in particular in mines
DE1109629B (en) * 1958-09-20 1961-06-29 Hoesch Bergbautechnik G M B H Arrangement for mechanized longwall mining

Also Published As

Publication number Publication date
US3228300A (en) 1966-01-11
US3217603A (en) 1965-11-16
DE1189504B (en) 1965-03-25
FR1356892A (en) 1964-03-27
DE1176087B (en) 1964-08-20
FR1356891A (en) 1964-03-27
GB991012A (en) 1965-05-05

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