GB1441609A - Mining machinery - Google Patents
Mining machineryInfo
- Publication number
- GB1441609A GB1441609A GB5682973A GB5682973A GB1441609A GB 1441609 A GB1441609 A GB 1441609A GB 5682973 A GB5682973 A GB 5682973A GB 5682973 A GB5682973 A GB 5682973A GB 1441609 A GB1441609 A GB 1441609A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head
- helical
- steps
- helix
- vanes
- 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 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 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)
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
1441609 Mining machines GREEN & BINGHAM Ltd 29 Nov 1974 [7 Dec 1973] 56829/73 Heading E1F A rotary cutting head for a mineral mining machine comprises a tubular body shell 1 around which is arranged one or more helical or part-helical vanes, or one or more helical or part-helical runs of overlapping or butted plates, the vanes or plates having pick holders, and the pitch of the or each helix or parthelix varying in at least two steps, e.g. 3 or 8, from a minimum value at the face side of the head to a maximum value at the machine side of the head. The change in pitch angle, e.g. 3‹ to 10‹, may be the same at each step or greater at steps closer to the machine side of the head than at steps closer to the face side of the head. In the embodiment where the number of steps is infinite the developed outline of the or each helix or part-helix takes the form of a continuous curve, e.g. part of a parabola.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5682973A GB1441609A (en) | 1973-12-07 | 1973-12-07 | Mining machinery |
DE19742457317 DE2457317A1 (en) | 1973-12-07 | 1974-12-04 | ROTARY HEAD FOR MINING MACHINERY |
BE151226A BE823032A (en) | 1973-12-07 | 1974-12-06 | DEVELOPMENTS RELATING TO MINING MACHINES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5682973A GB1441609A (en) | 1973-12-07 | 1973-12-07 | Mining machinery |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1441609A true GB1441609A (en) | 1976-07-07 |
Family
ID=10477650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5682973A Expired GB1441609A (en) | 1973-12-07 | 1973-12-07 | Mining machinery |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE823032A (en) |
DE (1) | DE2457317A1 (en) |
GB (1) | GB1441609A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0202478A1 (en) * | 1985-04-22 | 1986-11-26 | Hans Krummenauer GmbH & Co. KG | Cutting head of a heading machine |
US20200392677A1 (en) * | 2019-06-12 | 2020-12-17 | Caterpillar Paving Products Inc. | Milling rotor |
-
1973
- 1973-12-07 GB GB5682973A patent/GB1441609A/en not_active Expired
-
1974
- 1974-12-04 DE DE19742457317 patent/DE2457317A1/en not_active Withdrawn
- 1974-12-06 BE BE151226A patent/BE823032A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0202478A1 (en) * | 1985-04-22 | 1986-11-26 | Hans Krummenauer GmbH & Co. KG | Cutting head of a heading machine |
US20200392677A1 (en) * | 2019-06-12 | 2020-12-17 | Caterpillar Paving Products Inc. | Milling rotor |
US10982397B2 (en) * | 2019-06-12 | 2021-04-20 | Caterpillar Paving Products Inc. | Milling rotor |
Also Published As
Publication number | Publication date |
---|---|
DE2457317A1 (en) | 1975-06-12 |
BE823032A (en) | 1975-04-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
433D | Application made for revocation (sect. 33/1949) | ||
433G | Case decided by the comptroller ** application refused (sect. 33/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |