GB904373A - Improvements in and relating to earth-drilling equipment - Google Patents
Improvements in and relating to earth-drilling equipmentInfo
- Publication number
- GB904373A GB904373A GB20855/59A GB2085559A GB904373A GB 904373 A GB904373 A GB 904373A GB 20855/59 A GB20855/59 A GB 20855/59A GB 2085559 A GB2085559 A GB 2085559A GB 904373 A GB904373 A GB 904373A
- Authority
- GB
- United Kingdom
- Prior art keywords
- kelly
- toggles
- plates
- plate
- rams
- 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
- 238000005553 drilling Methods 0.000 title 1
- 230000000994 depressogenic effect Effects 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
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
904,373. Boring earth. ECONOMIC FOUNDATIONS Ltd. Feb. 24, 1960 [June 17, 1959], No. 20885/59. Class 85. Feed pressure is applied to a kelly bar by a member which rotates with the kelly and has at least two members operable to grip or release kelly on opposite sides thereof, means being provided to apply downward thrust to the rotating member and thus to the kelly. In Fig. 4, a plate 17 having a square central hole to fit the kelly 18 is secured to a lower circular plate 21 having a spacing flange 22 which forms an annular recess for slippers 15 which support the plates 17, 21 from a stationary ring 14. The ring is carried by hydraulic rams 12 which raise the plates on the kelly and then reverse to pull the kelly down. The thrust is transferred from the plate 17 to the kelly by toggles 24 comprising plates which are accommodated in recesses between the plates 17, 21 or in inserts 25 in those recesses. The toggles 24 are shaped to embrace the square kelly and have lateral extensions which are engaged at diametrically opposed points by two means, each comprising spaced abutments 33, 34 on a rod 30 slidable in the plate 17 and having a spring 32 adjustable by a nut 31. The springs tend to keep the edges 27 of the toggles in operation against the kelly. When the plates 17, 21 are raised by the rams 12, heads on the rods 30 strike a stationary framework 36, the abutments 33, 34 being depressed to disengage the toggles 24 from the kelly. When the rams 12 again descend, the heads are released and the springs 32 bring the toggles into action.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20855/59A GB904373A (en) | 1959-06-17 | 1959-06-17 | Improvements in and relating to earth-drilling equipment |
BE588406A BE588406A (en) | 1959-06-17 | 1960-03-08 | Improvements to sounding equipment |
CH327360A CH383298A (en) | 1959-06-17 | 1960-03-23 | Load device for driving rods of auger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20855/59A GB904373A (en) | 1959-06-17 | 1959-06-17 | Improvements in and relating to earth-drilling equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
GB904373A true GB904373A (en) | 1962-08-29 |
Family
ID=10152881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20855/59A Expired GB904373A (en) | 1959-06-17 | 1959-06-17 | Improvements in and relating to earth-drilling equipment |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE588406A (en) |
CH (1) | CH383298A (en) |
GB (1) | GB904373A (en) |
-
1959
- 1959-06-17 GB GB20855/59A patent/GB904373A/en not_active Expired
-
1960
- 1960-03-08 BE BE588406A patent/BE588406A/en unknown
- 1960-03-23 CH CH327360A patent/CH383298A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH383298A (en) | 1964-10-31 |
BE588406A (en) | 1960-07-01 |
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