GB233557A - Improvements in and relating to electrically operated percussive tools - Google Patents

Improvements in and relating to electrically operated percussive tools

Info

Publication number
GB233557A
GB233557A GB16298/24A GB1629824A GB233557A GB 233557 A GB233557 A GB 233557A GB 16298/24 A GB16298/24 A GB 16298/24A GB 1629824 A GB1629824 A GB 1629824A GB 233557 A GB233557 A GB 233557A
Authority
GB
United Kingdom
Prior art keywords
twist
relating
electrically operated
operate
position shown
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
GB16298/24A
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.)
DAVID HENRY LAMAR
Original Assignee
DAVID HENRY LAMAR
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 DAVID HENRY LAMAR filed Critical DAVID HENRY LAMAR
Priority to GB16298/24A priority Critical patent/GB233557A/en
Publication of GB233557A publication Critical patent/GB233557A/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
    • E21B1/00—Percussion drilling
    • E21B1/12—Percussion drilling with a reciprocating impulse member
    • E21B1/22—Percussion drilling with a reciprocating impulse member driven by electromagnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Transmission Devices (AREA)
  • Transplanting Machines (AREA)

Abstract

233,557. Lamar, D. H. July 7, 1924. Percussive haitd tools.-An electrically-operated hand tool for use in mining can be set to operate with or without twist as desired. For this purpose a ratchet-faced disc 33 with peripheral lugs 56 is held by a spring 36 against a ratchet face 37 on a guide block 32, the lugs engaging twist grooves 55 in the inner casing 11. In the position shown in Fig. 2, the twist mechanism does not operate, but by advancing the hammer piston 22 to the position shown in Fig. 3, and screwing in the set screw 53, the disc and guide block reciprocate with the piston. The reversals are effected by two solenoids 12, 13 excited alternately by means of a switch 41 with an inertia member 44 pivoted between contacts 42, 43. Air valves 27, 28 are provided.
GB16298/24A 1924-07-07 1924-07-07 Improvements in and relating to electrically operated percussive tools Expired GB233557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB16298/24A GB233557A (en) 1924-07-07 1924-07-07 Improvements in and relating to electrically operated percussive tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16298/24A GB233557A (en) 1924-07-07 1924-07-07 Improvements in and relating to electrically operated percussive tools

Publications (1)

Publication Number Publication Date
GB233557A true GB233557A (en) 1925-05-14

Family

ID=10074785

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16298/24A Expired GB233557A (en) 1924-07-07 1924-07-07 Improvements in and relating to electrically operated percussive tools

Country Status (1)

Country Link
GB (1) GB233557A (en)

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