GB191407857A - Improvements in Boring Machines for use particularly in Coal Mines. - Google Patents

Improvements in Boring Machines for use particularly in Coal Mines.

Info

Publication number
GB191407857A
GB191407857A GB191407857DA GB191407857A GB 191407857 A GB191407857 A GB 191407857A GB 191407857D A GB191407857D A GB 191407857DA GB 191407857 A GB191407857 A GB 191407857A
Authority
GB
United Kingdom
Prior art keywords
coal mines
use particularly
boring machines
gear
rotated
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 Marshall Stevenson
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 GB191407857A publication Critical patent/GB191407857A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

Abstract

7857. Stevenson, J. M. March 28. Drilling-machines. - A machine for drilling coal &c. comprises a frame a carrying nuts d in which a screw spindle c is rotated by a bevelgear i feathered thereon. The spindle c carries the drill, and the gear i is rotated by a gear l on a squared pin k, which is engaged by ratchet or other driving-means. The frame consists of four straps e, f, h, g, the last serving as a handle, and has enclosing-tubes b, b, provided with the usual prongs &c. (not shown) secured to it by set-screws m.
GB191407857D 1914-03-28 1914-03-28 Improvements in Boring Machines for use particularly in Coal Mines. Expired GB191407857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191407857T 1914-03-28

Publications (1)

Publication Number Publication Date
GB191407857A true GB191407857A (en) 1915-02-11

Family

ID=32582720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191407857D Expired GB191407857A (en) 1914-03-28 1914-03-28 Improvements in Boring Machines for use particularly in Coal Mines.

Country Status (1)

Country Link
GB (1) GB191407857A (en)

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