GB935012A - Improvements in and relating to coal cutting machines - Google Patents
Improvements in and relating to coal cutting machinesInfo
- Publication number
- GB935012A GB935012A GB112259A GB112259A GB935012A GB 935012 A GB935012 A GB 935012A GB 112259 A GB112259 A GB 112259A GB 112259 A GB112259 A GB 112259A GB 935012 A GB935012 A GB 935012A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tools
- coal
- tool
- hardness
- cutting
- 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
- 239000003245 coal Substances 0.000 title abstract 6
- 239000000463 material Substances 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 239000000969 carrier Substances 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/32—Mineral freed by means not involving slitting by adjustable or non-adjustable planing means with or without loading arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
935,012. Mining-machinery. CLARKE, CHAPMAN & CO. Ltd., T. THOMPSON, and E. L. J. POTTS. Dec. 31, 1959 [Jan. 12, 1959], No. 1122/59. Class 68 (1). A coal plough comprises a number of cutting-tools, one above the other, which are so adjustable that the tool working on the most easily cut layer leads the other tools which are arranged to the rear of the leading tool to an extent depending on the hardness of the layer being cut. In Fig. 2, four tools 11a-11d are carried by a head 1, pivoted on a vertical axis on a tractive body 3, to present the operative cutters to the coal face and to relieve the trailing cutters therefrom, the tools being secured on the ends of shanks 13a-13d of non-circular section which are slidable in carriers 10 attached to the head 1, the tools being held in the positions of adjustment by studs 15a-15d which pass through holes 14. The body 3 is steadied by extensions 16 which move along the floor beneath the face conveyer. In a modification, the tools are pre-set, symmetrically about a vertical line central with respect to the plough, by mounting each tool on the ram of an hydraulic jack with a built-in pump operable by a detachable handle. In another modification, the adjustment of the tools is effected automatically according to the hardness of the layers encountered, the tools being each mounted on the ends of a plunger rod which has a central piston and projects at both ends from the cylinder. The cylinders are mounted in a vertical series and are interconnected by conduits in such manner that excess pressure built up by one tool meeting a hard layer is transferred to the cylinders of tools dealing with less hard layers, so that the first tool is pressed rearwardly and the other tools advance in the direction of cutting so that they all take positions in which they attack the soft coal first and progressively to the hardest coal last. In all the embodiments, the tools may be mounted on percussive units carried by the shanks 13a- 13d, or by the plunger rods. The units may be pneumatically or electro-hydraulically operated and may be vibrated constantly during the coal cutting, or only during a period when the tools are being automatically adjusted according to the hardness encountered, e.g. by a control actuated by an increase in pressure in the toolcarrying hydraulic cylinders caused by meeting hard material. The control may effect vibrations in all the percussive units, or only in the unit meeting the hard material.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB112259A GB935012A (en) | 1959-01-12 | 1959-01-12 | Improvements in and relating to coal cutting machines |
BE586443A BE586443A (en) | 1959-01-12 | 1960-01-11 | Improvements in and relating to hard coal mining machinery |
FR815451A FR1244892A (en) | 1959-01-12 | 1960-01-12 | Coal scourers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB112259A GB935012A (en) | 1959-01-12 | 1959-01-12 | Improvements in and relating to coal cutting machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB935012A true GB935012A (en) | 1963-08-21 |
Family
ID=9716540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB112259A Expired GB935012A (en) | 1959-01-12 | 1959-01-12 | Improvements in and relating to coal cutting machines |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE586443A (en) |
FR (1) | FR1244892A (en) |
GB (1) | GB935012A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3361479A (en) * | 1964-08-12 | 1968-01-02 | Gewerk Eisenhuette Westfalia | Coal planer arrangement with independently positionable cutters |
US3445138A (en) * | 1967-09-05 | 1969-05-20 | Gewerk Eisenhuette Westfalia | Mining planer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3202350C2 (en) * | 1982-01-26 | 1984-08-23 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen | Cutting and breaking tool for a hydromechanical mining machine |
-
1959
- 1959-01-12 GB GB112259A patent/GB935012A/en not_active Expired
-
1960
- 1960-01-11 BE BE586443A patent/BE586443A/en unknown
- 1960-01-12 FR FR815451A patent/FR1244892A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3361479A (en) * | 1964-08-12 | 1968-01-02 | Gewerk Eisenhuette Westfalia | Coal planer arrangement with independently positionable cutters |
US3445138A (en) * | 1967-09-05 | 1969-05-20 | Gewerk Eisenhuette Westfalia | Mining planer |
Also Published As
Publication number | Publication date |
---|---|
BE586443A (en) | 1960-05-03 |
FR1244892A (en) | 1960-10-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1520984A (en) | Mining machine and a method for mining of minerals | |
US1704866A (en) | Method of mining and mining apparatus | |
GB935012A (en) | Improvements in and relating to coal cutting machines | |
ES448233A1 (en) | Tool feeding device for use in a work forming machine | |
US2336487A (en) | Stone-quarrying apparatus | |
US2499620A (en) | Pneumatic hammer for dozer blades | |
GB1180494A (en) | Improvements in or relating to Pneumatic Percussive Tools | |
GB1079274A (en) | Coal-winning arrangement | |
US3857609A (en) | Impact ripper shank | |
US1250521A (en) | Asphalt-cutter. | |
GB1060371A (en) | Apparatus for gripping and vibrating an article | |
GB689985A (en) | Earth working tool and method of mounting same on a rotary digging machine | |
GB962018A (en) | An air powered angle and bar guillotine | |
GB1162825A (en) | Support for a Powered Device for Cutting, Drilling or Breaking Rock, Concrete or like material | |
DE734894C (en) | Extraction machine for coal and other minerals that creates a cavity | |
GB573102A (en) | Improvements relating to earth excavating machines or scrapers | |
GB402506A (en) | Improvements in or relating to mole-draining apparatus | |
US2808251A (en) | Adjustable trimmer bar for boring type mining machine | |
SU507273A1 (en) | Stump cutting machine | |
SU740914A1 (en) | Vibrated-percussive soil-loosening device | |
US940297A (en) | Pneumatic surfacing-machine. | |
AT205901B (en) | Process and press for the production of pressed products from clay and ceramic masses | |
DE931697C (en) | Device for the production of artificial grains or for the introduction of pores in wood | |
GB882608A (en) | Improvements in or relating to track packing machines | |
GB654868A (en) | Improvements relating to a method and apparatus for mining |