GB217274A - Improvements in and connected with picks or cutters for coal cutting and like miningmachines - Google Patents

Improvements in and connected with picks or cutters for coal cutting and like miningmachines

Info

Publication number
GB217274A
GB217274A GB467823A GB467823A GB217274A GB 217274 A GB217274 A GB 217274A GB 467823 A GB467823 A GB 467823A GB 467823 A GB467823 A GB 467823A GB 217274 A GB217274 A GB 217274A
Authority
GB
United Kingdom
Prior art keywords
bit
cutters
coal
miningmachines
picks
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
GB467823A
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.)
JOSEPH NELSON OCTAVIUS ROGERS
WILFRID JOHN LEONARD
Original Assignee
JOSEPH NELSON OCTAVIUS ROGERS
WILFRID JOHN LEONARD
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 JOSEPH NELSON OCTAVIUS ROGERS, WILFRID JOHN LEONARD filed Critical JOSEPH NELSON OCTAVIUS ROGERS
Priority to GB467823A priority Critical patent/GB217274A/en
Publication of GB217274A publication Critical patent/GB217274A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor

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)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

217,274. Leonard, W. J., and Rogers, J. N. O. Feb. 17, 1923. Coal-cutting machines.-A pick or or cutter for coal-cutting &c. machines comprises two oppositely inclined bits b, b<1> on a common shank a and so disposed that one bit cuts when the pick is moved in one direction and the other bit cuts in the reverse direction of movement, the inoperative bit moving in the, path cut by the operative bit. The bits may have chisel points. The shank a is of reduced section, leaving a shoulder a<1> which facilitates setting of the cutters. Specification 207,368 is referred to.
GB467823A 1923-02-17 1923-02-17 Improvements in and connected with picks or cutters for coal cutting and like miningmachines Expired GB217274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB467823A GB217274A (en) 1923-02-17 1923-02-17 Improvements in and connected with picks or cutters for coal cutting and like miningmachines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB467823A GB217274A (en) 1923-02-17 1923-02-17 Improvements in and connected with picks or cutters for coal cutting and like miningmachines

Publications (1)

Publication Number Publication Date
GB217274A true GB217274A (en) 1924-06-17

Family

ID=9781699

Family Applications (1)

Application Number Title Priority Date Filing Date
GB467823A Expired GB217274A (en) 1923-02-17 1923-02-17 Improvements in and connected with picks or cutters for coal cutting and like miningmachines

Country Status (1)

Country Link
GB (1) GB217274A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746764C (en) * 1941-01-03 1944-08-23 Wilhelm Knapp G M B H Maschf Mining machine with chain cutter arm on the side, tools for chopping up behind and attached conveyor
US2745655A (en) * 1954-11-19 1956-05-15 Andrew J Vojtush Two-way coal cutting bit
CN104018834A (en) * 2014-06-04 2014-09-03 苏州博讯仪器有限公司 Cutting tooth

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746764C (en) * 1941-01-03 1944-08-23 Wilhelm Knapp G M B H Maschf Mining machine with chain cutter arm on the side, tools for chopping up behind and attached conveyor
US2745655A (en) * 1954-11-19 1956-05-15 Andrew J Vojtush Two-way coal cutting bit
CN104018834A (en) * 2014-06-04 2014-09-03 苏州博讯仪器有限公司 Cutting tooth

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