FR572457A - Machine de havage ou d'abatage - Google Patents

Machine de havage ou d'abatage

Info

Publication number
FR572457A
FR572457A FR572457DA FR572457A FR 572457 A FR572457 A FR 572457A FR 572457D A FR572457D A FR 572457DA FR 572457 A FR572457 A FR 572457A
Authority
FR
France
Prior art keywords
cutting
felling machine
felling
machine
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
English (en)
Inventor
Igo Etrich
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR572457A publication Critical patent/FR572457A/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
    • E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
    • E21C25/10—Rods; Drums

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)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
FR572457D 1923-03-28 1923-10-30 Machine de havage ou d'abatage Expired FR572457A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8844/23A GB214429A (en) 1923-03-28 1923-03-28 Improvements relating to coal cutting machines

Publications (1)

Publication Number Publication Date
FR572457A true FR572457A (fr) 1924-06-06

Family

ID=9860307

Family Applications (1)

Application Number Title Priority Date Filing Date
FR572457D Expired FR572457A (fr) 1923-03-28 1923-10-30 Machine de havage ou d'abatage

Country Status (3)

Country Link
US (1) US1472641A (fr)
FR (1) FR572457A (fr)
GB (1) GB214429A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075755A (en) * 1958-12-17 1963-01-29 Eickhoff Maschf Eisen Cutting roller for cutting rock, ore, and the like
US4294183A (en) * 1980-04-14 1981-10-13 Suncor Inc. Cutter configuration for efficient ice disaggregation and clearing
US11578869B2 (en) * 2021-05-20 2023-02-14 General Electric Company Active boundary layer control in diffuser

Also Published As

Publication number Publication date
GB214429A (en) 1924-04-24
US1472641A (en) 1923-10-30

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