GB844296A - Improvements in earth digging appliances - Google Patents
Improvements in earth digging appliancesInfo
- Publication number
- GB844296A GB844296A GB37615/58A GB3761558A GB844296A GB 844296 A GB844296 A GB 844296A GB 37615/58 A GB37615/58 A GB 37615/58A GB 3761558 A GB3761558 A GB 3761558A GB 844296 A GB844296 A GB 844296A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bucket
- shaft
- hole
- cutters
- square
- 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
Links
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
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
- E21B10/327—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 the cutter being pivoted about a longitudinal axis
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)
Abstract
844,296. Borehole apparatus. EDWARDS BUILDING SERVICES PTY. Ltd. Nov. 21, 1958 [Dec. 6, 1957], No. 37615/58. Class 85. A bucket adapted to be attached to an auger shaft and lowered into a hole cut by a standard auger has extending cutters which enlarge the bottom of the hole. The bucket 10 has a boss 12, with a square hole in it, mounted on the beams 11. Sliding in the boss is a square shaft 14, the movement of which is limited by a pin 19 running in slots 20 in the bush. The shaft 14 has an extension of circular cross-section which reaches nearly to the bottom of the bucket, is contained within a hollow shaft 15 which extends to the bottom of the bucket, and is supported at its upper end by a bearing 16. The shaft 15 is free to rotate relative to the bucket, but vertical movement is prevented by two collars 18. The bucket is supported by the pin 19 while being lowered into a hole but when it strikes the bottom of the hole, the shaft 14 moves down and projecting pins 21 move along spiral slots 22 in the hollow shaft 15 and turn it. As the shaft 15 turns a cross-beam 23 secured to it operates two links 25 which extend the cutters 26. In a modification (Fig. 6) the linkage for the cutters comprises a square shaft 114 which can move vertically, but not rotate, relative to the bucket 110. When the bucket strikes the bottom of the hole the links 125 move from the dotted line position to the full line position and extend the cutters.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU844296X | 1957-12-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB844296A true GB844296A (en) | 1960-08-10 |
Family
ID=3761929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37615/58A Expired GB844296A (en) | 1957-12-06 | 1958-11-21 | Improvements in earth digging appliances |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB844296A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0162981A1 (en) * | 1984-05-15 | 1985-12-04 | Katsumi Kitanaka | Divided-bucket type rotary excavator |
CN103485724A (en) * | 2013-09-09 | 2014-01-01 | 浙江鼎业基础工程有限公司 | Underreaming drill bit |
CN109138846A (en) * | 2018-10-17 | 2019-01-04 | 北京探矿工程研究所 | Double-core drilling tool with three blades |
CN114733901A (en) * | 2022-04-23 | 2022-07-12 | 湖南千山万水建设工程有限责任公司 | Farmland soil prosthetic devices |
-
1958
- 1958-11-21 GB GB37615/58A patent/GB844296A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0162981A1 (en) * | 1984-05-15 | 1985-12-04 | Katsumi Kitanaka | Divided-bucket type rotary excavator |
US4616720A (en) * | 1984-05-15 | 1986-10-14 | Katsumi Kitanaka | Divided-bucket type rotary excavator |
CN103485724A (en) * | 2013-09-09 | 2014-01-01 | 浙江鼎业基础工程有限公司 | Underreaming drill bit |
CN109138846A (en) * | 2018-10-17 | 2019-01-04 | 北京探矿工程研究所 | Double-core drilling tool with three blades |
CN109138846B (en) * | 2018-10-17 | 2023-09-15 | 北京探矿工程研究所 | Double-core drilling tool with three blades |
CN114733901A (en) * | 2022-04-23 | 2022-07-12 | 湖南千山万水建设工程有限责任公司 | Farmland soil prosthetic devices |
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