GB114484A - Improvements in Fishing Tools for use in Well Boring. - Google Patents

Improvements in Fishing Tools for use in Well Boring.

Info

Publication number
GB114484A
GB114484A GB502717A GB502717A GB114484A GB 114484 A GB114484 A GB 114484A GB 502717 A GB502717 A GB 502717A GB 502717 A GB502717 A GB 502717A GB 114484 A GB114484 A GB 114484A
Authority
GB
United Kingdom
Prior art keywords
spring
box
ring
rods
mandrel
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
GB502717A
Inventor
Hugh Slade Cairns
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
Priority to GB502717A priority Critical patent/GB114484A/en
Publication of GB114484A publication Critical patent/GB114484A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00Fishing for or freeing objects in boreholes or wells
    • E21B31/12Grappling tools, e.g. tongs or grabs
    • E21B31/18Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

114,484. Cairns, H. S. April 10, 1917. Grab-forks.-A fishing tool for use in well-boring comprises jaws K pivoted to a mandrel B which is slidably connected to a box A fixed to the drill rods, a ring D carried by the mandrel and adapted to engage trip rods C, which may be of spring steel or pivoted and spring-pressed, and a sliding member H secured to the trip rods and adapted, when the conical end of the box A disengages the trip rods from the ring D, to be pressed downwards by a spring G and close the jaws K through the medium of slots E and bolts. To enable the tool to penetrate debris &c. before being operated, a further spring may be provided between the ring D and the box A.
GB502717A 1917-04-10 1917-04-10 Improvements in Fishing Tools for use in Well Boring. Expired GB114484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB502717A GB114484A (en) 1917-04-10 1917-04-10 Improvements in Fishing Tools for use in Well Boring.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB502717A GB114484A (en) 1917-04-10 1917-04-10 Improvements in Fishing Tools for use in Well Boring.

Publications (1)

Publication Number Publication Date
GB114484A true GB114484A (en) 1918-04-10

Family

ID=32481759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB502717A Expired GB114484A (en) 1917-04-10 1917-04-10 Improvements in Fishing Tools for use in Well Boring.

Country Status (1)

Country Link
GB (1) GB114484A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105822246A (en) * 2016-05-10 2016-08-03 惠州市公路管理局 Opening-closing type salvaging device for drilled pile drill bits
CN110331954A (en) * 2019-06-05 2019-10-15 张希录 A kind of throw in catcher and its application method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105822246A (en) * 2016-05-10 2016-08-03 惠州市公路管理局 Opening-closing type salvaging device for drilled pile drill bits
CN105822246B (en) * 2016-05-10 2018-02-23 惠州市公路管理局 Open-close type drilled pile drill bit fishing device
CN110331954A (en) * 2019-06-05 2019-10-15 张希录 A kind of throw in catcher and its application method
CN110331954B (en) * 2019-06-05 2021-11-09 张希录 Throwing and fishing device and using method thereof

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