GB1264645A - - Google Patents

Info

Publication number
GB1264645A
GB1264645A GB1264645DA GB1264645A GB 1264645 A GB1264645 A GB 1264645A GB 1264645D A GB1264645D A GB 1264645DA GB 1264645 A GB1264645 A GB 1264645A
Authority
GB
United Kingdom
Prior art keywords
roller
rollers
rock
backing
moved
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)
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 filed Critical
Publication of GB1264645A publication Critical patent/GB1264645A/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
    • E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels

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)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
GB1264645D 1968-08-02 1969-07-01 Expired GB1264645A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA684996 1968-08-02

Publications (1)

Publication Number Publication Date
GB1264645A true GB1264645A (enExample) 1972-02-23

Family

ID=25561224

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1264645D Expired GB1264645A (enExample) 1968-08-02 1969-07-01

Country Status (6)

Country Link
US (1) US3645579A (enExample)
JP (1) JPS5022485B1 (enExample)
BE (1) BE735845A (enExample)
DE (1) DE1938619A1 (enExample)
FR (1) FR2017956A1 (enExample)
GB (1) GB1264645A (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2159351C3 (de) * 1971-11-30 1981-02-26 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter Bohrgerät mit wenigstens einer mit einem Unwuchtvibrator versehenen Schneidrolle
US4371210A (en) * 1978-04-10 1983-02-01 Kennametal Inc. Freely rotatable pick bit holder on rotary driven member and method
RU2168018C1 (ru) * 1999-12-02 2001-05-27 Институт горного дела - научно-исследовательское учреждение СО РАН Устройство для образования направленных трещин в скважинах

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1276686A (en) * 1917-06-20 1918-08-20 Joseph Petermann Apparatus for cutting and breaking asphalt or concrete.
US1404835A (en) * 1920-01-14 1922-01-31 John M Christine Means for cutting kerfs in mining
US2024764A (en) * 1932-12-03 1935-12-17 Frank E Hill Road surfacing machine
US2184068A (en) * 1939-03-24 1939-12-19 John A Zublin Turbine drill bit
US2606012A (en) * 1949-04-09 1952-08-05 Meyer John Henry Floor chipping machine
US2664281A (en) * 1949-08-27 1953-12-29 Tennant Co G H Machine for cutting, cleaning, grooving, and treating surfaces
US2639896A (en) * 1950-02-14 1953-05-26 Daniel H Francis Rotary rock drilling bit
US2894727A (en) * 1955-05-17 1959-07-14 Homer I Henderson Drilling bit
US3041055A (en) * 1959-07-13 1962-06-26 Goodman Mfg Co Rotatable cutter head

Also Published As

Publication number Publication date
DE1938619A1 (de) 1970-09-03
US3645579A (en) 1972-02-29
FR2017956A1 (enExample) 1970-05-29
JPS5022485B1 (enExample) 1975-07-31
BE735845A (enExample) 1970-01-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees