GB191513142A - Improvements in Rock Drills or Impact Engines. - Google Patents

Improvements in Rock Drills or Impact Engines.

Info

Publication number
GB191513142A
GB191513142A GB191513142DA GB191513142A GB 191513142 A GB191513142 A GB 191513142A GB 191513142D A GB191513142D A GB 191513142DA GB 191513142 A GB191513142 A GB 191513142A
Authority
GB
United Kingdom
Prior art keywords
engines
impact
rock drills
rock
hand
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
Inventor
George William Howell
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
Publication of GB191513142A publication Critical patent/GB191513142A/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
    • B25D9/18—Valve arrangements therefor involving a piston-type slide valve

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)

Abstract

13,142. Howell, G. W. Sept. 14. Drawings to Specification. Hand, foot, and like gear.-A rock-drill is oontrolled by a hand-actuated valve arranged on the exhaust outlet.
GB191513142D 1915-09-14 1915-09-14 Improvements in Rock Drills or Impact Engines. Expired GB191513142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191513142T 1915-09-14

Publications (1)

Publication Number Publication Date
GB191513142A true GB191513142A (en) 1916-09-14

Family

ID=32650568

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191513142D Expired GB191513142A (en) 1915-09-14 1915-09-14 Improvements in Rock Drills or Impact Engines.

Country Status (1)

Country Link
GB (1) GB191513142A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2737949A (en) * 1952-01-04 1956-03-13 Pfizer & Co C Disposable cartridge for hypodermic syringe
US2753866A (en) * 1952-01-21 1956-07-10 Jean U Koree Combined ampule and injection apparatus
US3974832A (en) * 1975-01-07 1976-08-17 Vca Corporation Interchangeable hypodermic needle assemblage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2737949A (en) * 1952-01-04 1956-03-13 Pfizer & Co C Disposable cartridge for hypodermic syringe
US2753866A (en) * 1952-01-21 1956-07-10 Jean U Koree Combined ampule and injection apparatus
US3974832A (en) * 1975-01-07 1976-08-17 Vca Corporation Interchangeable hypodermic needle assemblage

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