GB628799A - Groove-boring machines for mining coal and like minerals - Google Patents
Groove-boring machines for mining coal and like mineralsInfo
- Publication number
- GB628799A GB628799A GB2795847A GB2795847A GB628799A GB 628799 A GB628799 A GB 628799A GB 2795847 A GB2795847 A GB 2795847A GB 2795847 A GB2795847 A GB 2795847A GB 628799 A GB628799 A GB 628799A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drill
- machine
- drills
- pairs
- compressed air
- 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 2
- 238000005065 mining Methods 0.000 title abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 title 1
- 239000011707 mineral Substances 0.000 title 1
- 238000005520 cutting process Methods 0.000 abstract 2
- 238000005553 drilling Methods 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21C27/22—Mineral freed by means not involving slitting by rotary drills with breaking-down means, e.g. wedge-shaped drills, i.e. the rotary axis of the tool carrier being substantially perpendicular to the working face, e.g. MARIETTA-type
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)
- Drilling And Boring (AREA)
Abstract
628,799. Drilling-machines. YARMAK, J. Oct. 20, 1947, No. 27958. [Class 83 (iii)] A drilling machine for mining coal and the like comprises one or more pairs of tubular drills 11, 12, each pair of which is provided with a screw drill 19 so as to drill one or more pairs of ring-shaped cuts 56, 57. Fig. 7, of relatively large diameter and simultaneously to drill one or more holes 58 of relatively small diameter. The hole 58 is connected to the cuts 56, 57, to enable cuttings from the latter to be readily removed by the drill 19. Compressed air or water may be supplied to the tubular drills to assist in removing cuttings. The drills are rotated in the directions indicated by the arrows by means of toothed gearing enclosed in a casing 16 containing lubricant and operated either directly from an electric or compressed air motor or through a flexible shaft 27. The machine is provided with grips 47, 48, for hand operation. In a modification, Figs. 9 and 10 (not shown), the machine is fed by means of a manually-operated pinion engaging a rack bar carried by a prop supported between the roof and floor of the seam.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2795847A GB628799A (en) | 1947-10-20 | 1947-10-20 | Groove-boring machines for mining coal and like minerals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2795847A GB628799A (en) | 1947-10-20 | 1947-10-20 | Groove-boring machines for mining coal and like minerals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB628799A true GB628799A (en) | 1949-09-05 |
Family
ID=10268007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2795847A Expired GB628799A (en) | 1947-10-20 | 1947-10-20 | Groove-boring machines for mining coal and like minerals |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB628799A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE970413C (en) * | 1951-11-10 | 1958-09-18 | Wolfgang Ebeling Dipl Ing | Drilling machine for the production of large boreholes for mining or the like with a guide in the pilot hole |
DE1188017B (en) * | 1958-02-21 | 1965-03-04 | Siemens Ag | Fully mechanical extraction machine for underground mining |
-
1947
- 1947-10-20 GB GB2795847A patent/GB628799A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE970413C (en) * | 1951-11-10 | 1958-09-18 | Wolfgang Ebeling Dipl Ing | Drilling machine for the production of large boreholes for mining or the like with a guide in the pilot hole |
DE1188017B (en) * | 1958-02-21 | 1965-03-04 | Siemens Ag | Fully mechanical extraction machine for underground mining |
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