FR1224307A - Perfectionnements apportés aux chaînes coupant le charbon - Google Patents

Perfectionnements apportés aux chaînes coupant le charbon

Info

Publication number
FR1224307A
FR1224307A FR787264A FR787264A FR1224307A FR 1224307 A FR1224307 A FR 1224307A FR 787264 A FR787264 A FR 787264A FR 787264 A FR787264 A FR 787264A FR 1224307 A FR1224307 A FR 1224307A
Authority
FR
France
Prior art keywords
improvements made
cutting coal
chains
chains cutting
coal
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
FR787264A
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.)
Austin Hoy and Co Ltd
Original Assignee
Austin Hoy 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 Austin Hoy and Co Ltd filed Critical Austin Hoy and Co Ltd
Application granted granted Critical
Publication of FR1224307A publication Critical patent/FR1224307A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/22—Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
    • E21C25/28—Chains or chain guides

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)
FR787264A 1958-02-20 1959-02-20 Perfectionnements apportés aux chaînes coupant le charbon Expired FR1224307A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1224307X 1958-02-20

Publications (1)

Publication Number Publication Date
FR1224307A true FR1224307A (fr) 1960-06-23

Family

ID=10883897

Family Applications (1)

Application Number Title Priority Date Filing Date
FR787264A Expired FR1224307A (fr) 1958-02-20 1959-02-20 Perfectionnements apportés aux chaînes coupant le charbon

Country Status (1)

Country Link
FR (1) FR1224307A (fr)

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