GB298935A - Improvements in or relating to fluid-actuated rock-drills and similar tools - Google Patents

Improvements in or relating to fluid-actuated rock-drills and similar tools

Info

Publication number
GB298935A
GB298935A GB1870927A GB1870927A GB298935A GB 298935 A GB298935 A GB 298935A GB 1870927 A GB1870927 A GB 1870927A GB 1870927 A GB1870927 A GB 1870927A GB 298935 A GB298935 A GB 298935A
Authority
GB
United Kingdom
Prior art keywords
drills
relating
fluid
similar tools
actuated rock
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
GB1870927A
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 GB1870927A priority Critical patent/GB298935A/en
Publication of GB298935A publication Critical patent/GB298935A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/16—Valve arrangements therefor
    • B25D9/22—Valve arrangements therefor involving a rotary-type slide valve

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
GB1870927A 1927-07-14 1927-07-14 Improvements in or relating to fluid-actuated rock-drills and similar tools Expired GB298935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1870927A GB298935A (en) 1927-07-14 1927-07-14 Improvements in or relating to fluid-actuated rock-drills and similar tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1870927A GB298935A (en) 1927-07-14 1927-07-14 Improvements in or relating to fluid-actuated rock-drills and similar tools

Publications (1)

Publication Number Publication Date
GB298935A true GB298935A (en) 1928-10-15

Family

ID=10117051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1870927A Expired GB298935A (en) 1927-07-14 1927-07-14 Improvements in or relating to fluid-actuated rock-drills and similar tools

Country Status (1)

Country Link
GB (1) GB298935A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1055466B (en) * 1955-01-11 1959-04-16 Herbert Jeschke Dr Ing Two-cylinder hammer drill
US3229775A (en) * 1962-11-30 1966-01-18 Atlantic Refining Co Rotary percussion tool for earth drilling
US3314488A (en) * 1963-05-23 1967-04-18 Vickers Armstrongs Ltd Hydraulically operated tool
US4633903A (en) * 1984-05-11 1987-01-06 Enfo Grundlagenforschungs Ag Distributing control valve with hydraulic control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1055466B (en) * 1955-01-11 1959-04-16 Herbert Jeschke Dr Ing Two-cylinder hammer drill
US3229775A (en) * 1962-11-30 1966-01-18 Atlantic Refining Co Rotary percussion tool for earth drilling
US3314488A (en) * 1963-05-23 1967-04-18 Vickers Armstrongs Ltd Hydraulically operated tool
US4633903A (en) * 1984-05-11 1987-01-06 Enfo Grundlagenforschungs Ag Distributing control valve with hydraulic control

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