GB481537A - Improvements in or relating to fluid-actuated rock drills or like tools - Google Patents

Improvements in or relating to fluid-actuated rock drills or like tools

Info

Publication number
GB481537A
GB481537A GB2507836A GB2507836A GB481537A GB 481537 A GB481537 A GB 481537A GB 2507836 A GB2507836 A GB 2507836A GB 2507836 A GB2507836 A GB 2507836A GB 481537 A GB481537 A GB 481537A
Authority
GB
United Kingdom
Prior art keywords
tools
relating
fluid
holman
ports
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
GB2507836A
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.)
Holman Brothers Ltd
Original Assignee
Holman Brothers 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 Holman Brothers Ltd filed Critical Holman Brothers Ltd
Priority to GB2507836A priority Critical patent/GB481537A/en
Publication of GB481537A publication Critical patent/GB481537A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/26—Lubricating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

481,537. Percussive drills. HOLMAN, A. T., HOLMAN, P. M., COCK, B., and HOLMAN BROS., Ltd. Sept. 14, 1936, No. 25078. [Class 124] Live air, conveying small quantities of oil passes from the cylinder 2 through ports 12 into reservoirs 11. These ports are uncovered by the piston just prior to opening the exhaust ports' 13, on both strokes. Oil collects in these reservoirs and is conveyed by passages 14. 15 to the front chuck. Grooves 17 serve to retain the oil. Specification 328,685, [Class 12 (ii)], is referred to.
GB2507836A 1936-09-14 1936-09-14 Improvements in or relating to fluid-actuated rock drills or like tools Expired GB481537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2507836A GB481537A (en) 1936-09-14 1936-09-14 Improvements in or relating to fluid-actuated rock drills or like tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2507836A GB481537A (en) 1936-09-14 1936-09-14 Improvements in or relating to fluid-actuated rock drills or like tools

Publications (1)

Publication Number Publication Date
GB481537A true GB481537A (en) 1938-03-14

Family

ID=10221843

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2507836A Expired GB481537A (en) 1936-09-14 1936-09-14 Improvements in or relating to fluid-actuated rock drills or like tools

Country Status (1)

Country Link
GB (1) GB481537A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738769A (en) * 1953-05-11 1956-03-20 Holman Brothers Ltd Rock drilling apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738769A (en) * 1953-05-11 1956-03-20 Holman Brothers Ltd Rock drilling apparatus

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