GB1133754A - Digging machines - Google Patents
Digging machinesInfo
- Publication number
- GB1133754A GB1133754A GB3967666A GB3967666A GB1133754A GB 1133754 A GB1133754 A GB 1133754A GB 3967666 A GB3967666 A GB 3967666A GB 3967666 A GB3967666 A GB 3967666A GB 1133754 A GB1133754 A GB 1133754A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boom
- movement
- solenoids
- ram
- digging
- 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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
- E02F9/123—Drives or control devices specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
1,133,754. Shovelling machines. DOWTY TECHNICAL DEVELOPMENTS Ltd. 30 Oct., 1967 [6 Sept., 1966], No: 39676/66. Heading E1F. The speed of movement of a shovel-carrying boom swingably about a vertical axis, is as the boom approaches a digging, position, automatically reduced by control means appropriately associated with the means swing- ing the boom. Preferably electrically actuated solenoids control chokes in the supply and return pipe to a hydraulically actuated ram. The solenoids are connected to a rotary switch having a contactor drum mechanically coupled to for movement in unison with the boom when the boom is swung horizontally on operation of a manual control valve actuating the ram.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3967666A GB1133754A (en) | 1966-09-06 | 1966-09-06 | Digging machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3967666A GB1133754A (en) | 1966-09-06 | 1966-09-06 | Digging machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1133754A true GB1133754A (en) | 1968-11-20 |
Family
ID=10410861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3967666A Expired GB1133754A (en) | 1966-09-06 | 1966-09-06 | Digging machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1133754A (en) |
-
1966
- 1966-09-06 GB GB3967666A patent/GB1133754A/en not_active Expired
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