US658060A - Rock-drill head. - Google Patents

Rock-drill head. Download PDF

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Publication number
US658060A
US658060A US2435100A US1900024351A US658060A US 658060 A US658060 A US 658060A US 2435100 A US2435100 A US 2435100A US 1900024351 A US1900024351 A US 1900024351A US 658060 A US658060 A US 658060A
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United States
Prior art keywords
rock
drill head
drill
head
chisels
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Expired - Lifetime
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US2435100A
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William Archer Dudley
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William Archer Dudley
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/62Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

Description

No. 658,060. Patented Sept. I8, I900.

' A. DUDLEY.

DRILL HEAD.

(Application filed July 21, 1900.)

(No Model.)

WITNESSES IN VEN TOR v EQ WM 9% A TTOHNEY NITED STATES PATENT ()FFICE.

W'ILLIAM ARCHER DUDLEY, 0F PETERSBURG, VIRGINIA.

ROCK-DRILL HEAD.

SPECIFICATION forming part of Letters Patent No. 658,060, dated September 18, 1900.

Application filed July 21, 1900. Serial No. 24,351. (No model.)

T0 at whom it may concern:

Be it known that I, WILLIAM ARCHER DUD- LEY. a citizen of the United States, residing at Petersburg, in the county of Dinwiddie and State of Virginia, have invented certain new and useful Improvements in Rock-Drill Heads; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the'art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the lettersof reference marked thereon, which form a part of this specification.

The invention relates generally to rock-drill heads which are screwed or otherwise secured to the piston-rod or tube and provided with packing around the exterior.

The special object of the invention is to make a reversible head which can'be used alternately to make a primary cut around the core which is to be subsequently removed by an ordinary core-breaker and then reversed to cut out the projections left between the first set of chisels.

Figure 1 of the drawings is a side elevation of my improved reversible drill-head, showing the local relation of the two sets of chisels on the opposite ends. Fig. 2 is a plan view showing clearly the radial position of the cutting edges of the chisels to a common center. Fig. 3 is a vertical section showing how a bisecting line through the convex angle of one dial to a common center and are preferably 7 eight in number, while a line D, bisecting a convex angle in one set of chisels, bisects a concave angle in the other set, thus allowing one set to cut out what has been left by the other.

My double reversible drill-head is made with a slight concavity E around the middle thereof, so that the packing may always be kept exactly-in its true position.

Having thus described all that is necessary to a full understanding of my invention,what I claim as new, and desire to protect by Let ters Patent, is-- A double, reversible drill-head provided with a circle of chisels on each end, the said chisels being V-shaped,with the cutting edges radial to a common center,substantially as shown and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

WM. ARCHER DUDLEY.

Witnesses:

R. J. J. SPRATLEY, R. G. SPRATLEY.

US2435100A 1900-07-21 1900-07-21 Rock-drill head. Expired - Lifetime US658060A (en)

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US2435100A US658060A (en) 1900-07-21 1900-07-21 Rock-drill head.

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519861A (en) * 1947-01-14 1950-08-22 John D Bilbao Double-acting drill bit
US2558341A (en) * 1949-03-11 1951-06-26 Cory Frank Lawrence Auger rock drill bit
US2575239A (en) * 1950-06-13 1951-11-13 Marathon Coal Bit Company Inc Reversible bit and holder therefor
US2602639A (en) * 1948-07-19 1952-07-08 Gwylam G Green Rock drill bit
US2746722A (en) * 1950-07-17 1956-05-22 Schneider Jacob Reversible drill bit
US2821364A (en) * 1954-07-01 1958-01-28 Godfrey Grant Two-way bit
US3015365A (en) * 1959-08-18 1962-01-02 Griffin Wellpoint Corp Sliding weight holepuncher for the installation of wellpoints
US3295618A (en) * 1960-05-09 1967-01-03 Fischer Artur Dowel bit and method of manufacturing the same
US3339649A (en) * 1965-01-19 1967-09-05 Atlas Copco Ab Rock drill bits
US3651960A (en) * 1968-12-30 1972-03-28 Dale Corp Van Wall cleaner
US3847236A (en) * 1973-06-28 1974-11-12 J Coalson Drill bit
US20080251297A1 (en) * 2007-03-14 2008-10-16 Overstreet James L Passive and active up-drill features on fixed cutter earth-boring tools and related methods

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519861A (en) * 1947-01-14 1950-08-22 John D Bilbao Double-acting drill bit
US2602639A (en) * 1948-07-19 1952-07-08 Gwylam G Green Rock drill bit
US2558341A (en) * 1949-03-11 1951-06-26 Cory Frank Lawrence Auger rock drill bit
US2575239A (en) * 1950-06-13 1951-11-13 Marathon Coal Bit Company Inc Reversible bit and holder therefor
US2746722A (en) * 1950-07-17 1956-05-22 Schneider Jacob Reversible drill bit
US2821364A (en) * 1954-07-01 1958-01-28 Godfrey Grant Two-way bit
US3015365A (en) * 1959-08-18 1962-01-02 Griffin Wellpoint Corp Sliding weight holepuncher for the installation of wellpoints
US3295618A (en) * 1960-05-09 1967-01-03 Fischer Artur Dowel bit and method of manufacturing the same
US3339649A (en) * 1965-01-19 1967-09-05 Atlas Copco Ab Rock drill bits
US3651960A (en) * 1968-12-30 1972-03-28 Dale Corp Van Wall cleaner
US3847236A (en) * 1973-06-28 1974-11-12 J Coalson Drill bit
US20080251297A1 (en) * 2007-03-14 2008-10-16 Overstreet James L Passive and active up-drill features on fixed cutter earth-boring tools and related methods
US8047309B2 (en) * 2007-03-14 2011-11-01 Baker Hughes Incorporated Passive and active up-drill features on fixed cutter earth-boring tools and related systems and methods

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