GB300017A - Improvements relating to coal-cutting machines - Google Patents

Improvements relating to coal-cutting machines

Info

Publication number
GB300017A
GB300017A GB3084827A GB3084827A GB300017A GB 300017 A GB300017 A GB 300017A GB 3084827 A GB3084827 A GB 3084827A GB 3084827 A GB3084827 A GB 3084827A GB 300017 A GB300017 A GB 300017A
Authority
GB
United Kingdom
Prior art keywords
coal
rope
cutting machines
spring
controlled
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
GB3084827A
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.)
Anderson Boyes and Co Ltd
Original Assignee
Anderson Boyes and Co 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 Anderson Boyes and Co Ltd filed Critical Anderson Boyes and Co Ltd
Priority to GB3084827A priority Critical patent/GB300017A/en
Publication of GB300017A publication Critical patent/GB300017A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
    • E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
    • E21C29/14—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains by haulage cable or chain pulling the machine along the working face
    • E21C29/145—Means for tensioning the haulage chains or cables

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)
  • Harvester Elements (AREA)

Abstract

300,017. Anderson, A., and Andersen, Boyes, & Co., Ltd. Nov. 17, 1927. Coal-cutting machines.-In a coal-cutting machine with a safety rope device for use in inclined seams, one end of the rope 1 is connected to a balance weight 9 or a spring or the equivalent, either directly or through levers or pulleys, so as to maintain an even tension on the tail end of the rope. The rope passes round a ratchet drum 2 and also round a brake drum 3 with internal brake shoes 10 controlled by a hand nut 15, link 13, and a pivoted lever 12. The brake drum may be positively locked by a spring- pressed cluch member 16 keyed to a stationary shaft 17 and controlled by a member 22 with a transverse pin 23 cooperating with a channel 24 to hold the clutch member in inoperative position.
GB3084827A 1927-11-17 1927-11-17 Improvements relating to coal-cutting machines Expired GB300017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3084827A GB300017A (en) 1927-11-17 1927-11-17 Improvements relating to coal-cutting machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3084827A GB300017A (en) 1927-11-17 1927-11-17 Improvements relating to coal-cutting machines

Publications (1)

Publication Number Publication Date
GB300017A true GB300017A (en) 1928-11-08

Family

ID=10314081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3084827A Expired GB300017A (en) 1927-11-17 1927-11-17 Improvements relating to coal-cutting machines

Country Status (1)

Country Link
GB (1) GB300017A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973203C (en) * 1948-10-02 1959-12-24 Henry Neuenburg Method and device for the mechanical dismantling of steeply positioned floeze

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973203C (en) * 1948-10-02 1959-12-24 Henry Neuenburg Method and device for the mechanical dismantling of steeply positioned floeze

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