FR379220A - Roller guide for shearers - Google Patents

Roller guide for shearers

Info

Publication number
FR379220A
FR379220A FR379220DA FR379220A FR 379220 A FR379220 A FR 379220A FR 379220D A FR379220D A FR 379220DA FR 379220 A FR379220 A FR 379220A
Authority
FR
France
Prior art keywords
shearers
roller guide
roller
guide
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
Other languages
French (fr)
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand 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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Application granted granted Critical
Publication of FR379220A publication Critical patent/FR379220A/en
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
    • E21C25/02—Machines slitting solely by one or more percussive tools moved through the seam

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)
FR379220D 1907-06-25 1907-06-25 Roller guide for shearers Expired FR379220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR379220T 1907-06-25

Publications (1)

Publication Number Publication Date
FR379220A true FR379220A (en) 1907-10-29

Family

ID=1425529

Family Applications (1)

Application Number Title Priority Date Filing Date
FR379220D Expired FR379220A (en) 1907-06-25 1907-06-25 Roller guide for shearers

Country Status (1)

Country Link
FR (1) FR379220A (en)

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