GB485211A - Improvements in, and relating to, drill shafts and detachable bits for use with rock drills - Google Patents

Improvements in, and relating to, drill shafts and detachable bits for use with rock drills

Info

Publication number
GB485211A
GB485211A GB3445436A GB3445436A GB485211A GB 485211 A GB485211 A GB 485211A GB 3445436 A GB3445436 A GB 3445436A GB 3445436 A GB3445436 A GB 3445436A GB 485211 A GB485211 A GB 485211A
Authority
GB
United Kingdom
Prior art keywords
distortion
screw
bit
threaded
socket
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
GB3445436A
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.)
RIP BITS Ltd
Original Assignee
RIP BITS 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 RIP BITS Ltd filed Critical RIP BITS Ltd
Priority to GB3445436A priority Critical patent/GB485211A/en
Publication of GB485211A publication Critical patent/GB485211A/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods

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)

Abstract

485,211. Percussive rock drills. RIP-BITS, Ltd., and PADLEY, L. Dec. 15, 1936, No. 34454. [Class 124] In a solid or hollow rock drill, which is subjected to a rotary motion, and in which the shaft a and detachable bit b are operatively connected together with their end faces g, h in abutment with each other by means of a screw-threaded connecting member c engaging screw-threaded sockets i, k in the shaft and bit respectively, the length of the member c being less than the combined length of the two sockets, the bit and connecting member are made fast to one another after assembly together by a distortion or interruption of the screw-threaded engagement within the entrance of the socket k by displacement of metal m forming part of the face h. For this purpose the metal at the face h is left unhardened or is tempered for a short depth and the distortion is effected by a hollow caulking or like tool. In order to increase the distortion, one or more of the threads on the member c may have their crests wholly or partially removed or omitted as at n. The edge of the socket i also may be rounded or countersunk as at j.
GB3445436A 1936-12-15 1936-12-15 Improvements in, and relating to, drill shafts and detachable bits for use with rock drills Expired GB485211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3445436A GB485211A (en) 1936-12-15 1936-12-15 Improvements in, and relating to, drill shafts and detachable bits for use with rock drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3445436A GB485211A (en) 1936-12-15 1936-12-15 Improvements in, and relating to, drill shafts and detachable bits for use with rock drills

Publications (1)

Publication Number Publication Date
GB485211A true GB485211A (en) 1938-05-17

Family

ID=10365845

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3445436A Expired GB485211A (en) 1936-12-15 1936-12-15 Improvements in, and relating to, drill shafts and detachable bits for use with rock drills

Country Status (1)

Country Link
GB (1) GB485211A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290739A (en) * 1961-01-16 1966-12-13 Vesuvius Crucible Co Stopper for a ladle or similar receptacle
US3318621A (en) * 1963-10-11 1967-05-09 Joseph Dixon Crucible Co Stopper assembly with sections having a series of concentric undulating interfitting ribs and grooves

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290739A (en) * 1961-01-16 1966-12-13 Vesuvius Crucible Co Stopper for a ladle or similar receptacle
US3318621A (en) * 1963-10-11 1967-05-09 Joseph Dixon Crucible Co Stopper assembly with sections having a series of concentric undulating interfitting ribs and grooves

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