GB374494A - Improvements in mining machines - Google Patents
Improvements in mining machinesInfo
- Publication number
- GB374494A GB374494A GB742931A GB742931A GB374494A GB 374494 A GB374494 A GB 374494A GB 742931 A GB742931 A GB 742931A GB 742931 A GB742931 A GB 742931A GB 374494 A GB374494 A GB 374494A
- Authority
- GB
- United Kingdom
- Prior art keywords
- internal gear
- speed
- cage
- gearing
- variable
- 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
- 238000005065 mining Methods 0.000 title abstract 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
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)
- Retarders (AREA)
Abstract
374,494. Variable-speed gearing. DEHN, F. B., 103, Kingsway, London.- (Goodman Manufacturing Co. ; 4834, South Halsted Street, Chicago, U.S.A.) March 10, 1931, No. 7429. [Class 80 (ii).] Variable speed planet gearing in a mining machine comprises differential planet gears 63, 67, driven from a pinion 62 and carried by a cage 65, the gears 63, 67, respectively engaging an internal gear 66 controlled by a band brake 72 and an internal gear 68 ; a clutch 73 is engageable with either the cage 65 or the internal gear 68 to vary the speed of the driven shaft 58.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB742931A GB374494A (en) | 1931-03-10 | 1931-03-10 | Improvements in mining machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB742931A GB374494A (en) | 1931-03-10 | 1931-03-10 | Improvements in mining machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB374494A true GB374494A (en) | 1932-06-10 |
Family
ID=9832941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB742931A Expired GB374494A (en) | 1931-03-10 | 1931-03-10 | Improvements in mining machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB374494A (en) |
-
1931
- 1931-03-10 GB GB742931A patent/GB374494A/en not_active Expired
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