US474297A - Carl hoffmann - Google Patents
Carl hoffmann Download PDFInfo
- Publication number
- US474297A US474297A US474297DA US474297A US 474297 A US474297 A US 474297A US 474297D A US474297D A US 474297DA US 474297 A US474297 A US 474297A
- Authority
- US
- United States
- Prior art keywords
- balls
- rock
- drill
- boring
- bore
- 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 12
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 210000001138 Tears Anatomy 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 235000005824 corn Nutrition 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
Images
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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/06—Fishing for or freeing objects in boreholes or wells using magnetic means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Description
(No Mod-e1.)
C. HOFFMANN.. APPARATUS FOR RGK BORING.
g ,MJ wf 4 w im .md S f f NrTED STATES ATENT OFFICE.
CARL HOFFMANN, OF OIIARLOTENBURG, ASSIGNOR TO SIEMENS &
IIALSKE, OF BERLIN, GERMANY.
APPARATUS FOR ROCK-BORING.
SPECIFICATION forming part of Letters Patent No. 474,297, dated May 3, 1892.
Application fiied'novemterzt, 1891. serai No. 413,119- (No modem T0 LZ-Z whom, t may concern:
Be it known that I, CARL HOFFMANN, a subject of the King of Irussia, residing at Charlottenburg, Prussia, have invented certain new and useful Improvements in Rock-Drills; and I do hereby 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.
My invention relates to rock-drills; and it consiste of certain novel features hereinafter described and claimed.
In the accompanying drawings, in which similar letters refer to similar parts throughout the views, Figure l represents a vertical section of one form of drill-head constructed according to my invention, and Fig. lfL represents a view of the lower end of the same looking upward. Figs. 2, 3, 4, and 5 represent modiiications of the device shown in Fig. l; and Figs. 2f, 3, 4E, and 5a represent views of the bottom of the said modifications, respectively, looking upward.
In Figs. l to 5 illustrations are given of various methods of manufacturing drill-heads to carry out the process above described.
In the device shown in Fig. l, R represents any long iron or steel tube, which at its upper end is attached to a drilling machine or mandrel. The steel piece St, Fig, l, attached to the bottom part of the tube R, is provided at the bottom with a semicircular groove intended for the reception of one or more chilledsteel, cast-iron, or other solidmetal balls, preferably magnetic, which, when the borerod is turned, are rolled under pressure over the bottom of the bore-hole. At the center of the steel piece St there is a hole 7i, through which water iiows between the boring-balls. In order to prevent the boring-balls'from falling down from the bore-rod when the borer is Withdrawn or when the same shouldhappen to meet cavities in the rock, both parts are kept together in a permanent connection by magnetic attraction. Thisis shown in Figs. l to 4f.
In Fig. l, Strepresent apermanent magnet.
In Fig. 2 the bottom surface of the borerod consists of the two concentric poles N and S of apot-shaped electro-magnet. The annuter of the bore-hole leaves a core standing.
Fig. 5 shows an enlarging-drill as used, for instance, in bore-holes which, owing to the unevenness of the rock, were not run straight.
The boring itself is done in the following manner: The bore-rod is firmly pressed upon the globes or balls and made to turn. The balls, rolling around in the groove, follow the rotary motion of the axis, and, as they always touch the rock at but few points, upon such points a strong pressure is exerted and the rock at such points is crushed without the occurrence of a sliding friction between it and the balls, which might subject the balls to considerable wear and tear. The iinely-pulverized rock is removed by the jet of water introduced through the hole 71,. The rock at the center of the bore-hole not directly struck by the balls cornes oft in small pieces, owing to the lateral pressure exerted'by the balls, which particles fall below the balls and are here likewise crushed by them. It is, however, not necessary to make the boring-balls and the boring-heads of magnetic or, as the case may be, of magnetizable material. One may just as well make use of bronze or any other alloys or metals sufliciently capable of resistance and of any special stopping or catching apparatus which would prevent the balls from falling out of the end of the drillhead when the latter is withdrawn from the bore-hole or the pressure on the balls is removed.
In the inode of arrangement, as illustrated by Fig. 5, for instance, the middle shoulder enlarged toward the bottom of thebore-head fully suffices to hold the balls and to draw them out by means of the boring-rod without additionally using the magnetic attractive force. In a similar manner one could proceed in case of the remaining forms of construction.
IOC
Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-
l. In a rook-drill, the combination, With a rotary drill-head having an annular groove in the front end thereof, of a plurality of hardmetal balls suitably held in but protruding from and free to roll in said annular groove, substantially as described. i
2. In a rook-drill, the combination, With a rotating drill-head having a conduit for Water therein and having an annular groove in the front end thereof, of a plurality of hard-metal balls free to roll in said groove, but suitably held therein and protruding therefrom, substantially as described.
3. In a roek-drill, the combination, with a magnetized rotating drill-head having an annular groove in the front end thereof, of a plu- CARL HOFFMANN.
Vitnesses: n
B. Roi, E. KOLLINER.
Publications (1)
Publication Number | Publication Date |
---|---|
US474297A true US474297A (en) | 1892-05-03 |
Family
ID=2543155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US474297D Expired - Lifetime US474297A (en) | Carl hoffmann |
Country Status (1)
Country | Link |
---|---|
US (1) | US474297A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2626128A (en) * | 1951-09-24 | 1953-01-20 | Reed Roller Bit Co | Drill bit |
US2687875A (en) * | 1951-11-20 | 1954-08-31 | Hughes Tool Co | Well drill |
US2721726A (en) * | 1949-08-10 | 1955-10-25 | Howard L Johnson | Drill head |
US2982367A (en) * | 1956-07-30 | 1961-05-02 | Reed Roller Bit Co | Detritus trap for well drill |
US3078934A (en) * | 1959-05-13 | 1963-02-26 | Jersey Prod Res Co | Drilling of earth formations by extrusion |
US3130801A (en) * | 1961-02-09 | 1964-04-28 | Reed Roller Bit Co | Drill bit having inserts forming a reamer |
US3186500A (en) * | 1961-02-09 | 1965-06-01 | Reed Roller Bit Co | Gage maintaining arrangement for drill bit cutters |
US4125167A (en) * | 1977-06-06 | 1978-11-14 | Smith International, Inc. | Big hole bit |
US4226285A (en) * | 1979-02-12 | 1980-10-07 | Moseley Jr Meekie D | Magnetic junk retriever |
RU2634596C1 (en) * | 2017-02-16 | 2017-11-01 | Николай Митрофанович Панин | Drilling bit |
-
0
- US US474297D patent/US474297A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2721726A (en) * | 1949-08-10 | 1955-10-25 | Howard L Johnson | Drill head |
US2626128A (en) * | 1951-09-24 | 1953-01-20 | Reed Roller Bit Co | Drill bit |
US2687875A (en) * | 1951-11-20 | 1954-08-31 | Hughes Tool Co | Well drill |
US2982367A (en) * | 1956-07-30 | 1961-05-02 | Reed Roller Bit Co | Detritus trap for well drill |
US3078934A (en) * | 1959-05-13 | 1963-02-26 | Jersey Prod Res Co | Drilling of earth formations by extrusion |
US3130801A (en) * | 1961-02-09 | 1964-04-28 | Reed Roller Bit Co | Drill bit having inserts forming a reamer |
US3186500A (en) * | 1961-02-09 | 1965-06-01 | Reed Roller Bit Co | Gage maintaining arrangement for drill bit cutters |
US4125167A (en) * | 1977-06-06 | 1978-11-14 | Smith International, Inc. | Big hole bit |
US4226285A (en) * | 1979-02-12 | 1980-10-07 | Moseley Jr Meekie D | Magnetic junk retriever |
RU2634596C1 (en) * | 2017-02-16 | 2017-11-01 | Николай Митрофанович Панин | Drilling bit |
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