GB254908A - Improvements in or connected with cutting machines for use in mining coal and other minerals - Google Patents
Improvements in or connected with cutting machines for use in mining coal and other mineralsInfo
- Publication number
- GB254908A GB254908A GB2280325A GB2280325A GB254908A GB 254908 A GB254908 A GB 254908A GB 2280325 A GB2280325 A GB 2280325A GB 2280325 A GB2280325 A GB 2280325A GB 254908 A GB254908 A GB 254908A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bolt
- abutment
- casing
- head
- race
- 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 1
- 229910052500 inorganic mineral Inorganic materials 0.000 title 1
- 239000011707 mineral Substances 0.000 title 1
- 238000005065 mining Methods 0.000 title 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/02—Locking equipment for slewable parts
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 Exploitation, And Mining Machines And Methods (AREA)
Abstract
254,908. Mavor & Coulson, Ltd., and Mavor, J. B. Sept. 12, 1925. Coal-cutting machines.-In a mining-machine comprising a cutter carrying member capable of being slued about the axis of the gear head-casing, a bolt, movable endwise and capable of being shot into the locking position, is provided for locking the member and head-casing against relative rotation, the endwise movement being produced by relative rotation between a helical race and an abutment. As shown, brackets 2, 3 on the head-casing have guides for the movable bolt C which carries an abutment 5 engaging a helical race D which has rests or indents at intervals and has a flat upper surface 6. The bolt is non-rotatable and is moved out of engagement with the cutter-carrier B by rotating the helical race by means of a tommybar inserted in an opening 9. In a modification, the helical race is fixed and the bolt rotatable, while in other forms the race is carried bv the bolt and the abutment by the head-casing, either the bolt or the abutment being rotatable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2280325A GB254908A (en) | 1925-09-12 | 1925-09-12 | Improvements in or connected with cutting machines for use in mining coal and other minerals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2280325A GB254908A (en) | 1925-09-12 | 1925-09-12 | Improvements in or connected with cutting machines for use in mining coal and other minerals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB254908A true GB254908A (en) | 1926-07-15 |
Family
ID=10185300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2280325A Expired GB254908A (en) | 1925-09-12 | 1925-09-12 | Improvements in or connected with cutting machines for use in mining coal and other minerals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB254908A (en) |
-
1925
- 1925-09-12 GB GB2280325A patent/GB254908A/en not_active Expired
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