GB1264528A - - Google Patents

Info

Publication number
GB1264528A
GB1264528A GB1264528DA GB1264528A GB 1264528 A GB1264528 A GB 1264528A GB 1264528D A GB1264528D A GB 1264528DA GB 1264528 A GB1264528 A GB 1264528A
Authority
GB
United Kingdom
Prior art keywords
shaft
lever
degrees
swing shaft
clevis
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 GB1264528A publication Critical patent/GB1264528A/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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/025—Rock drills, i.e. jumbo drills

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB1264528D 1968-08-16 1969-06-13 Expired GB1264528A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75325768A 1968-08-16 1968-08-16

Publications (1)

Publication Number Publication Date
GB1264528A true GB1264528A (es) 1972-02-23

Family

ID=25029861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1264528D Expired GB1264528A (es) 1968-08-16 1969-06-13

Country Status (1)

Country Link
GB (1) GB1264528A (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4799556A (en) * 1986-04-02 1989-01-24 The Steel Engineering Co., Ltd. Drilling boom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4799556A (en) * 1986-04-02 1989-01-24 The Steel Engineering Co., Ltd. Drilling boom

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed