GB1194977A - Improvements in or relating to Mining Machines - Google Patents

Improvements in or relating to Mining Machines

Info

Publication number
GB1194977A
GB1194977A GB20251/68A GB2025168A GB1194977A GB 1194977 A GB1194977 A GB 1194977A GB 20251/68 A GB20251/68 A GB 20251/68A GB 2025168 A GB2025168 A GB 2025168A GB 1194977 A GB1194977 A GB 1194977A
Authority
GB
United Kingdom
Prior art keywords
arms
reversal
pump
control
fluid
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
GB20251/68A
Other languages
English (en)
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.)
Lee Norse Co
Original Assignee
Lee Norse Co
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 Lee Norse Co filed Critical Lee Norse Co
Publication of GB1194977A publication Critical patent/GB1194977A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
    • E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
    • E21C31/04—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices imparting both a rotary and reciprocating motion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Transmission Devices (AREA)
GB20251/68A 1967-05-11 1968-04-29 Improvements in or relating to Mining Machines Expired GB1194977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63770767A 1967-05-11 1967-05-11

Publications (1)

Publication Number Publication Date
GB1194977A true GB1194977A (en) 1970-06-17

Family

ID=24557045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20251/68A Expired GB1194977A (en) 1967-05-11 1968-04-29 Improvements in or relating to Mining Machines

Country Status (5)

Country Link
US (1) US3460868A (enExample)
BE (1) BE715014A (enExample)
DE (1) DE1758314A1 (enExample)
FR (1) FR1564325A (enExample)
GB (1) GB1194977A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192551A (en) * 1978-10-10 1980-03-11 Bethlehem Steel Corporation Remote control system for mining machines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979319A (en) * 1958-08-07 1961-04-11 Goodman Mfg Co Mechanical miner having offset rotary heads
US3353871A (en) * 1964-08-05 1967-11-21 Lee Norse Co Continuous mining machine with oscillating rotary cutter heads
US3333895A (en) * 1964-09-25 1967-08-01 Joy Mfg Co Mining machine having synchronized oscillating cutter heads
US3333894A (en) * 1964-09-28 1967-08-01 Joy Mfg Co Mining machine having cutter arms oscillated in opposite directions and in phase
US3302974A (en) * 1966-02-18 1967-02-07 Westinghouse Air Brake Co Ripper type mining machine having oppositely moving oscillating ripper heads

Also Published As

Publication number Publication date
US3460868A (en) 1969-08-12
BE715014A (enExample) 1968-09-30
FR1564325A (enExample) 1969-04-18
DE1758314A1 (de) 1971-01-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee