GB296020A - Feed controlling apparatus for percussive tools - Google Patents
Feed controlling apparatus for percussive toolsInfo
- Publication number
- GB296020A GB296020A GB20197/28A GB2019728A GB296020A GB 296020 A GB296020 A GB 296020A GB 20197/28 A GB20197/28 A GB 20197/28A GB 2019728 A GB2019728 A GB 2019728A GB 296020 A GB296020 A GB 296020A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drill
- passages
- percussive
- pressure fluid
- handle
- 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
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
- 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
Abstract
296,020. Chicago Pneumatic Tool Co., (Assignees of Nell, G. M.). Aug. 23, 1927, [Convention date]. Percussive drills.-The admission of pressure fluid to the space above 'the feed piston b<1> of a stoping or other percussive drill is controlled by a differential valve 9 which is moved into the position shown, that is, to close the passage b<3>, when the operator places his thumb over the open end 14a of a vent passage 14. The drill then descends as air escapes from the piston chamber through passages 13, 16, 18, which action may be more) or' less checked by the provision of a small inlet port 19. The handle is screwed into a tapered socket 8 which may be adjusted about its own axis by means of a cross pin 22 taking into different peripheral sockets 23. Lubricant from a recess 28 in the handle passes to the working parts by passages 30, 32. The main throttle valve 5 controls the pressure fluid inlet 4 supplying both the drill cylinder and the feed piston.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US214822A US1845805A (en) | 1927-08-23 | 1927-08-23 | Feed controlling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB296020A true GB296020A (en) | 1929-05-09 |
Family
ID=22800544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20197/28A Expired GB296020A (en) | 1927-08-23 | 1928-07-11 | Feed controlling apparatus for percussive tools |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1845805A (en) |
| GB (1) | GB296020A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2777424A (en) * | 1953-11-16 | 1957-01-15 | Thor Power Tool Co | Automatic water valve for rock drills |
| US3602103A (en) * | 1969-07-31 | 1971-08-31 | Powers Wire Products Co Inc | Slide-latch valve for air-driven tools |
-
1927
- 1927-08-23 US US214822A patent/US1845805A/en not_active Expired - Lifetime
-
1928
- 1928-07-11 GB GB20197/28A patent/GB296020A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1845805A (en) | 1932-02-16 |
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