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GB191207085A - Improvements in and relating to Percussive Rock Drills. - Google Patents

Improvements in and relating to Percussive Rock Drills.

Info

Publication number
GB191207085A
GB191207085A GB191207085DA GB191207085A GB 191207085 A GB191207085 A GB 191207085A GB 191207085D A GB191207085D A GB 191207085DA GB 191207085 A GB191207085 A GB 191207085A
Authority
GB
United Kingdom
Prior art keywords
screw
drill
relating
rock drills
cushioning
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
John Drinnan
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
Application granted granted Critical
Publication of GB191207085A publication Critical patent/GB191207085A/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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/081—Screw-and-nut feed mechanisms

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

7085. Drinnan, J. March 22. Percussive drills.-In a hammer drill with a screw feed, a cushioning-spring is arranged axially between the drill and the feeding-means. The hammer drill a has a socket c in which a screwed spindle d is slidably mounted, the movement being limited by a screw c<1>. The screw d engages a nut e in a sleeve f, which may engage the roof &c. by its spiked end f<2> or may be connected to a denticulated support by trunnions f<1>. The screw d is rotated by a wheel d<2> or other means and imparts the feed to the drill through the cushioning-spring g.
GB191207085D 1912-03-22 1912-03-22 Improvements in and relating to Percussive Rock Drills. Expired GB191207085A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191207085T 1912-03-22

Publications (1)

Publication Number Publication Date
GB191207085A true GB191207085A (en) 1912-10-10

Family

ID=32570941

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191207085D Expired GB191207085A (en) 1912-03-22 1912-03-22 Improvements in and relating to Percussive Rock Drills.

Country Status (1)

Country Link
GB (1) GB191207085A (en)

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