FR636995A - Improvements to shearers - Google Patents
Improvements to shearersInfo
- Publication number
- FR636995A FR636995A FR636995DA FR636995A FR 636995 A FR636995 A FR 636995A FR 636995D A FR636995D A FR 636995DA FR 636995 A FR636995 A FR 636995A
- Authority
- FR
- France
- Prior art keywords
- shearers
- 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 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
- E21C29/06—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains anchored at one or both ends to the mine working face
- E21C29/10—Cable or chain co-operating with a winch or the like on the machine
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US136446A US1815872A (en) | 1926-09-20 | 1926-09-20 | Mining machine |
Publications (1)
Publication Number | Publication Date |
---|---|
FR636995A true FR636995A (en) | 1928-04-20 |
Family
ID=22472895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR636995D Expired FR636995A (en) | 1926-09-20 | 1927-07-04 | Improvements to shearers |
Country Status (4)
Country | Link |
---|---|
US (1) | US1815872A (en) |
DE (1) | DE528735C (en) |
FR (1) | FR636995A (en) |
GB (1) | GB277621A (en) |
-
1926
- 1926-09-20 US US136446A patent/US1815872A/en not_active Expired - Lifetime
-
1927
- 1927-06-08 GB GB15290/27A patent/GB277621A/en not_active Expired
- 1927-06-14 DE DES80166D patent/DE528735C/en not_active Expired
- 1927-07-04 FR FR636995D patent/FR636995A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE528735C (en) | 1931-07-06 |
US1815872A (en) | 1931-07-21 |
GB277621A (en) | 1928-09-10 |
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