FR425434A - Improvements made to mining machines - Google Patents

Improvements made to mining machines

Info

Publication number
FR425434A
FR425434A FR425434DA FR425434A FR 425434 A FR425434 A FR 425434A FR 425434D A FR425434D A FR 425434DA FR 425434 A FR425434 A FR 425434A
Authority
FR
France
Prior art keywords
improvements made
mining machines
mining
machines
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 FR425434A publication Critical patent/FR425434A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/28—Mineral freed by means not involving slitting by percussive drills with breaking-down means, e.g. wedge-shaped tools

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)
FR425434D 1911-01-31 1911-01-31 Improvements made to mining machines Expired FR425434A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR425434T 1911-01-31

Publications (1)

Publication Number Publication Date
FR425434A true FR425434A (en) 1911-06-10

Family

ID=1468098

Family Applications (1)

Application Number Title Priority Date Filing Date
FR425434D Expired FR425434A (en) 1911-01-31 1911-01-31 Improvements made to mining machines

Country Status (1)

Country Link
FR (1) FR425434A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1172208B (en) * 1958-06-11 1964-06-18 Hauhinco Maschf Extraction machine pulled back and forth by a chain strand on a face conveyor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1172208B (en) * 1958-06-11 1964-06-18 Hauhinco Maschf Extraction machine pulled back and forth by a chain strand on a face conveyor

Similar Documents

Publication Publication Date Title
FR425434A (en) Improvements made to mining machines
FR422284A (en) Improvements made to mining machines
FR422285A (en) Improvements made to mining machines
FR422286A (en) Improvements made to mining machines
FR401146A (en) Improvements made to mining machines
FR22192E (en) Blasthole digging machine
FR443627A (en) Improvements to mine punches
FR457567A (en) mine prop
FR415729A (en) Improvements to shearers
CH70878A (en) Blasthole digging machine
FR448065A (en) Devices for indirect rock blasting, to prevent firedamp explosions
AU1090413B (en) Mining machine
FR543358A (en) Improvements to mining machines
FR13364E (en) Improvements to mining machines for coal mines, or similar applications
FR459165A (en) Improvements in safety devices for mining machines
FR514286A (en) Improvements to machinery intended for use in the exploitation of coal mines, etc.
FR412115A (en) Improvements made to waterproof caps for mine bits
FR472497A (en) Mine
FR438762A (en) Mine for submarines
FR438896A (en) Frame for mine galleries
FR424596A (en) Sieve for mine lamps
FR17442E (en) Sieve for mine lamps
FR469740A (en) Underwater mine
FR465669A (en) Underwater mine
FR17428E (en) Underwater mine