GB309894A - Improvements in or relating to lifting-dogs or like devices - Google Patents
Improvements in or relating to lifting-dogs or like devicesInfo
- Publication number
- GB309894A GB309894A GB161228A GB161228A GB309894A GB 309894 A GB309894 A GB 309894A GB 161228 A GB161228 A GB 161228A GB 161228 A GB161228 A GB 161228A GB 309894 A GB309894 A GB 309894A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jaws
- spindle
- working
- dogs
- relating
- 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
- 241000239290 Araneae Species 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
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)
Abstract
309,894. Zell, O. S., and Milliken Bros. & Blaw-Knox, Ltd. Jan. 17, 1928. Borehole apparatus.-A tool intended particularly for picking up stones or small objects from boreholes comprises gripping-jaws 10 pivoted at 18 on a spider 16 working on a screwed spindle 15. Cam-shaped extensions 12 of the jaws are engaged by sleeves 20 on a nut 19 working on an oppositely-threaded part 14 of the spindle. The jaws are opened and closed by rotating the spindle. Specification 204,636, [Class 68 (ii), Subaqueous buildings &c.] is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB161228A GB309894A (en) | 1928-01-17 | 1928-01-17 | Improvements in or relating to lifting-dogs or like devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB161228A GB309894A (en) | 1928-01-17 | 1928-01-17 | Improvements in or relating to lifting-dogs or like devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB309894A true GB309894A (en) | 1929-04-17 |
Family
ID=9724954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB161228A Expired GB309894A (en) | 1928-01-17 | 1928-01-17 | Improvements in or relating to lifting-dogs or like devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB309894A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2437572A (en) * | 1944-01-13 | 1948-03-09 | Leo N Walter | Power excavating apparatus |
US2490836A (en) * | 1944-10-10 | 1949-12-13 | Robert G Schriefer | Tuning means |
GB2243801A (en) * | 1990-04-21 | 1991-11-13 | Hope Leslie | Clamps |
-
1928
- 1928-01-17 GB GB161228A patent/GB309894A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2437572A (en) * | 1944-01-13 | 1948-03-09 | Leo N Walter | Power excavating apparatus |
US2490836A (en) * | 1944-10-10 | 1949-12-13 | Robert G Schriefer | Tuning means |
GB2243801A (en) * | 1990-04-21 | 1991-11-13 | Hope Leslie | Clamps |
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