GB300017A - Improvements relating to coal-cutting machines - Google Patents
Improvements relating to coal-cutting machinesInfo
- Publication number
- GB300017A GB300017A GB3084827A GB3084827A GB300017A GB 300017 A GB300017 A GB 300017A GB 3084827 A GB3084827 A GB 3084827A GB 3084827 A GB3084827 A GB 3084827A GB 300017 A GB300017 A GB 300017A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coal
- rope
- cutting machines
- spring
- controlled
- 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 OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
- E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
- E21C29/14—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains by haulage cable or chain pulling the machine along the working face
- E21C29/145—Means for tensioning the haulage chains or cables
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)
- Harvester Elements (AREA)
Abstract
300,017. Anderson, A., and Andersen, Boyes, & Co., Ltd. Nov. 17, 1927. Coal-cutting machines.-In a coal-cutting machine with a safety rope device for use in inclined seams, one end of the rope 1 is connected to a balance weight 9 or a spring or the equivalent, either directly or through levers or pulleys, so as to maintain an even tension on the tail end of the rope. The rope passes round a ratchet drum 2 and also round a brake drum 3 with internal brake shoes 10 controlled by a hand nut 15, link 13, and a pivoted lever 12. The brake drum may be positively locked by a spring- pressed cluch member 16 keyed to a stationary shaft 17 and controlled by a member 22 with a transverse pin 23 cooperating with a channel 24 to hold the clutch member in inoperative position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3084827A GB300017A (en) | 1927-11-17 | 1927-11-17 | Improvements relating to coal-cutting machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3084827A GB300017A (en) | 1927-11-17 | 1927-11-17 | Improvements relating to coal-cutting machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB300017A true GB300017A (en) | 1928-11-08 |
Family
ID=10314081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3084827A Expired GB300017A (en) | 1927-11-17 | 1927-11-17 | Improvements relating to coal-cutting machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB300017A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE973203C (en) * | 1948-10-02 | 1959-12-24 | Henry Neuenburg | Method and device for the mechanical dismantling of steeply positioned floeze |
-
1927
- 1927-11-17 GB GB3084827A patent/GB300017A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE973203C (en) * | 1948-10-02 | 1959-12-24 | Henry Neuenburg | Method and device for the mechanical dismantling of steeply positioned floeze |
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