US1823367A - Excavating device - Google Patents
Excavating device Download PDFInfo
- Publication number
- US1823367A US1823367A US333367A US33336729A US1823367A US 1823367 A US1823367 A US 1823367A US 333367 A US333367 A US 333367A US 33336729 A US33336729 A US 33336729A US 1823367 A US1823367 A US 1823367A
- Authority
- US
- United States
- Prior art keywords
- holders
- bore
- hole
- excavating
- blades
- 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
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 241000239290 Araneae Species 0.000 description 1
- 238000010276 construction Methods 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
Definitions
- My invention relates to a device for excavating the earth underneath a bore-hole to produce a cavity of definite dimensions.
- a socle or a '5 supporting base is produced of a certain defined size giving a sure support for the pile to be erected within the bore-hole.
- the pile is thus enabled to carry a much greater load than it has been hitherto possible, inasmuch In as the pressure of the supporting base on the ground can now be calculated and its limits are known.
- the primary feature of my device resides in the arrangement of resilient steel knifeblades kept in' contracted position by their own resiliency and adapted to be bent outwards by moving the holders of the blades against each other while theyare working underneath the bore-hole.
- FIGs. 1 and 2 show the new device in two different elevations.
- the enlarging boring device comprises two or more resilient steel knives s. The ends 0 I of the knives are articulated to the toot-plate w and to the head plate 1". The latter is fastened to the square bar a while the plate w is fastened to the square tube '0. The bar it is guided within the pipe n so that the plates '41] and 9" may be moved against each other while they are simultaneously rotating.
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
Sept. 15, 1931. LORENZ 11,823,367
EXCAVATING DEVICE Filed Jan. 18, 1929 I -Fzg 2.
ave/liar:
Batented Sept. 15, 1931 UNITED STATES PATENT OFFICE EXCAVATING DEVICE Application filed January 18, 1929, Serial No. 333,367, and in Germany December 8, 1927.
My invention relates to a device for excavating the earth underneath a bore-hole to produce a cavity of definite dimensions. By filling this cavity with'concrete a socle or a '5 supporting base is produced of a certain defined size giving a sure support for the pile to be erected within the bore-hole. The pile is thus enabled to carry a much greater load than it has been hitherto possible, inasmuch In as the pressure of the supporting base on the ground can now be calculated and its limits are known.
The primary feature of my device resides in the arrangement of resilient steel knifeblades kept in' contracted position by their own resiliency and adapted to be bent outwards by moving the holders of the blades against each other while theyare working underneath the bore-hole.
Other objects of my invention and certain details of construction will be apparent from the following description and the annexed drawings, in which .Figs. 1 and 2 show the new device in two different elevations. I p I The enlarging boring device comprises two or more resilient steel knives s. The ends 0 I of the knives are articulated to the toot-plate w and to the head plate 1". The latter is fastened to the square bar a while the plate w is fastened to the square tube '0. The bar it is guided within the pipe n so that the plates '41] and 9" may be moved against each other while they are simultaneously rotating. By
these means the knives are rotated in a reliable manner. A spider t keeps the knives s apart at a distance greater than the distance of their articulation on the plates 0", w. When neath the bore-hole, and
path in order to exert a better grip on the earth.
What I claim is:
1. In a device for excavating the earth underneath a bore-hole, resilient steel knit'cblades kept in contracted position by their own resiliency, two holders of the knife blades adapted to be moved at will relatively to each other for bending the said knifeblades outwardly while being underneath the bore-hole, and pivotal connections between the holders and the ends of the knife-blades.
2. In a device for excavating the earth underneath a bore-hole, resilient steel knifeblades kept in contracted position by their own resiliency, two holders of the knifeblades not rotatable against each other, but
adapted to be moved at will lengthwise relatively to each other for bending the said knife-blades outwardly while being underivotal connections between the holders an the ends of the knife-blades.
3. In a device for excavating the earth underneath a bore-hole, resilient steel knifeblades kept in'contracted position by their own resiliency, two holders of the knifeblad-es adapted to be moved at will relatively to each other for bending the said knife blades outwardly while being underneath the bore-hole, pivotal connections between the holders and the ends of the knife-blades, and adjustable means on one of the said holders for limiting the relative movement of the holders.
In testimony whereof I affix my signature.
ERNST LORENZ.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1823367X | 1927-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1823367A true US1823367A (en) | 1931-09-15 |
Family
ID=7744825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US333367A Expired - Lifetime US1823367A (en) | 1927-12-08 | 1929-01-18 | Excavating device |
Country Status (1)
Country | Link |
---|---|
US (1) | US1823367A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2634957A (en) * | 1950-07-31 | 1953-04-14 | William E Coyle | Flare drill |
US2998074A (en) * | 1959-08-11 | 1961-08-29 | Camo Tool Company Inc | Oil and gas well cleaning apparatus |
WO2009116963A1 (en) * | 2008-03-17 | 2009-09-24 | Attaya James S | Methods and apparatus for expanding the diameter of a borehole |
-
1929
- 1929-01-18 US US333367A patent/US1823367A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2634957A (en) * | 1950-07-31 | 1953-04-14 | William E Coyle | Flare drill |
US2998074A (en) * | 1959-08-11 | 1961-08-29 | Camo Tool Company Inc | Oil and gas well cleaning apparatus |
WO2009116963A1 (en) * | 2008-03-17 | 2009-09-24 | Attaya James S | Methods and apparatus for expanding the diameter of a borehole |
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