US93684A - Improved rock-drill point - Google Patents
Improved rock-drill point Download PDFInfo
- Publication number
- US93684A US93684A US93684DA US93684A US 93684 A US93684 A US 93684A US 93684D A US93684D A US 93684DA US 93684 A US93684 A US 93684A
- Authority
- US
- United States
- Prior art keywords
- drill point
- rock
- drill
- improved rock
- parts
- 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 - Lifetime
Links
- 239000011435 rock Substances 0.000 description 2
- 241001274613 Corvus frugilegus Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
Definitions
- my invention consists in the con-l struct-ion or formation of the point of a rook-drill, as hereinafter more fully described.
- A is the body or shaft of the drill, a greater portion 'of which is broken away at x, a short distance from tionately as the same are reduced, (the required strength n for the cutting-parts being preserved,) and that the cutting has the effect tobreak away the rock at the central part-s, or the parts corresponding to the recessesof the drills,-in such a manner as to be a great economy of time and labor in drilling.
- the notches or recesses b can be made of any suitable shape, contiguration, or size, so as to reduce the length of the cutting-edge c, to admit of the rock opposite the recesses or depressions being easily broken oft' from the solid rook at the bottom -of the hole by the action of the parts of the drill-points'not removed.
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)
Description
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Letters Paten'tNo. 93,684, dated August 17, 1869.
lMPROVED ROCK-DRILL PDINT.
The Schedule referred t in these Letters Patent and makingjprt of the same.
To all whom it 'may concern 4Be it known that l', CHARLTON H. DAVIS, Of' San Francisco, in the count-y of San Francisco, and State of California, have|` invented a new and improved Rock- Drill Point; and I- do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to v make and use the same, reference being had to theV accompanying drawin gs, forming part of this specification, in which- Figures l, 2, and 3, represent my improvements in drills.' Y
Similar letters of reference indicate corresponding parts.
The nature of my invention consists in the con-l struct-ion or formation of the point of a rook-drill, as hereinafter more fully described. p
A is the body or shaft of the drill, a greater portion 'of which is broken away at x, a short distance from tionately as the same are reduced, (the required strength n for the cutting-parts being preserved,) and that the cutting has the effect tobreak away the rock at the central part-s, or the parts corresponding to the recessesof the drills,-in such a manner as to be a great economy of time and labor in drilling.
, The notches or recesses b can be made of any suitable shape, contiguration, or size, so as to reduce the length of the cutting-edge c, to admit of the rock opposite the recesses or depressions being easily broken oft' from the solid rook at the bottom -of the hole by the action of the parts of the drill-points'not removed.
Having thus described my invention, I claim as new, and Vdesire to secure by Letters Patent- Rock-drill points, provided with one or more notches or recesses b, substantially as herein shown and described, and for the purpose set forth.
The above specifica-tion of my invention signed by me, this 15th day of June, 1869.
CHARLTON H. DAVIS:
Witnesses:
FRANK BLOCKLEY, ALEX. F. ROBERTS.A
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US93684A true US93684A (en) | 1869-08-17 |
Family
ID=2163161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US93684D Expired - Lifetime US93684A (en) | Improved rock-drill point |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US93684A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2673714A (en) * | 1950-08-05 | 1954-03-30 | John M Hargrave | Rock or masonry drill |
-
0
- US US93684D patent/US93684A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2673714A (en) * | 1950-08-05 | 1954-03-30 | John M Hargrave | Rock or masonry drill |
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