GB923931A - Improved earth boring under-reaming tool - Google Patents

Improved earth boring under-reaming tool

Info

Publication number
GB923931A
GB923931A GB24712/59A GB2471259A GB923931A GB 923931 A GB923931 A GB 923931A GB 24712/59 A GB24712/59 A GB 24712/59A GB 2471259 A GB2471259 A GB 2471259A GB 923931 A GB923931 A GB 923931A
Authority
GB
United Kingdom
Prior art keywords
container
superstructure
blades
spoil
earth boring
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
GB24712/59A
Other languages
English (en)
Inventor
Gustav Wolfgang Amann
Reginald John Woolgar
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.)
Economic Foundations Ltd
Original Assignee
Economic Foundations 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 Economic Foundations Ltd filed Critical Economic Foundations Ltd
Priority to GB24712/59A priority Critical patent/GB923931A/en
Priority to DE19601484454 priority patent/DE1484454B1/de
Priority to CH797260A priority patent/CH385118A/de
Priority to LU38952D priority patent/LU38952A1/xx
Publication of GB923931A publication Critical patent/GB923931A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB24712/59A 1959-07-17 1959-07-17 Improved earth boring under-reaming tool Expired GB923931A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB24712/59A GB923931A (en) 1959-07-17 1959-07-17 Improved earth boring under-reaming tool
DE19601484454 DE1484454B1 (de) 1959-07-17 1960-06-02 Erdbohrer zum unterscneiden von bohrloechern
CH797260A CH385118A (de) 1959-07-17 1960-07-13 Erdbohrwerkzeug
LU38952D LU38952A1 (cs) 1959-07-17 1960-07-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24712/59A GB923931A (en) 1959-07-17 1959-07-17 Improved earth boring under-reaming tool

Publications (1)

Publication Number Publication Date
GB923931A true GB923931A (en) 1963-04-18

Family

ID=10216052

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24712/59A Expired GB923931A (en) 1959-07-17 1959-07-17 Improved earth boring under-reaming tool

Country Status (4)

Country Link
CH (1) CH385118A (cs)
DE (1) DE1484454B1 (cs)
GB (1) GB923931A (cs)
LU (1) LU38952A1 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118148502A (zh) * 2024-05-09 2024-06-07 河南普申建筑工程有限公司 一种工程建设用地质勘察用扩孔装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US21241A (en) * 1858-08-24 Railroad-rail
DE551838C (de) * 1930-02-04 1932-06-04 Johannes Busch Bohrgeraet, insbesondere zur Herstellung von Hohlraeumen fuer die Fussverbreiterung von Ortspfaehlen
GB395408A (en) * 1932-01-16 1933-07-17 Arthur Brannan Holmes Improvements in or relating to earth-boring apparatus
FR740514A (fr) * 1932-07-26 1933-01-27 Appareil d'élargissement des puits et forages
US2031353A (en) * 1935-08-16 1936-02-18 Woodruff Harvey Ellis Underreamer
GB480848A (en) * 1937-07-23 1938-03-01 Frank Smith Improvements in and relating to earth boring apparatus
US2397652A (en) * 1944-02-03 1946-04-02 Jr Woyman B Dunlap Underreamer
US2631013A (en) * 1948-04-19 1953-03-10 Darin & Armstrong Inc Hole digging apparatus
US2613063A (en) * 1949-10-31 1952-10-07 Ralph A Ransdall Undercutting earth auger
US2697586A (en) * 1949-11-26 1954-12-21 Dolen O Talley Earth underreamer
FR1013033A (fr) * 1950-02-20 1952-07-22 Cie D Entpr S Electr Dispositif pour creuser un épanouissement à la base d'une fouille

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118148502A (zh) * 2024-05-09 2024-06-07 河南普申建筑工程有限公司 一种工程建设用地质勘察用扩孔装置

Also Published As

Publication number Publication date
CH385118A (de) 1964-11-30
LU38952A1 (cs) 1960-10-14
DE1484454B1 (de) 1969-09-04

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