GB240614A - Improvements in connection with coal-cutting machines - Google Patents
Improvements in connection with coal-cutting machinesInfo
- Publication number
- GB240614A GB240614A GB2064124A GB2064124A GB240614A GB 240614 A GB240614 A GB 240614A GB 2064124 A GB2064124 A GB 2064124A GB 2064124 A GB2064124 A GB 2064124A GB 240614 A GB240614 A GB 240614A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gear
- shaft
- turntable
- head
- jib
- 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
- 238000010276 construction Methods 0.000 abstract 1
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)
- Jib Cranes (AREA)
Abstract
240,614. Hurd, F. W. Sept. 2, 1924. Coal-cutting machines. - A coal-cutting machine has a gear head carrying the turntable, a driven gear and gear-head shaft within and carried entirely by the gear head, a motor-driven shaft carrying a pinion in mesh with the driving gear, a cutter actuating member with bearings therefor carried entirely by the turntable and a flexible driving connection between the driven gear and the cutter actuating member. In a chain machine the motor shaft 1, 2 is divided at the gear head, the parts being automatically connected by a centrifugal clutch 3, 4, on starting of the motor, while a member 5 may be moved by a lever 6 to disengage the clutch. The shaft section 2 is supported in bearings 2<a> 2<b>, and carries a bevel gear 8 meshing with a crown wheel 9 fixed to a hollow shaft 10 entirely supported in the gear head 11, which may be split vertically. A turntable 14 carries the jib and entirely supports the chain driving sprocket 12 which is connected to the shaft 10 by a hexagonal, square, splined or castellated shaft 13 engaging corresponding bores in the parts 10, 12 and having sufficient freedom to avoid non-torsional stresses. The shaft 13 may be lifted by hand or screw means to interrupt the drive of the sprocket 12 &c. The turntable 14 has a bevel rack 15 engaged by bevel pinions 16, driven manually or from the haulage gear to slue the jib; a toothed segment 17 connected to a screw 18 may be moved by means of a rotatable nut 19 to engage the rack 15 to lock the jib. The construction may be modified for use with cutter-bar machines.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2064124A GB240614A (en) | 1924-09-02 | 1924-09-02 | Improvements in connection with coal-cutting machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2064124A GB240614A (en) | 1924-09-02 | 1924-09-02 | Improvements in connection with coal-cutting machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB240614A true GB240614A (en) | 1925-10-08 |
Family
ID=10149265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2064124A Expired GB240614A (en) | 1924-09-02 | 1924-09-02 | Improvements in connection with coal-cutting machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB240614A (en) |
-
1924
- 1924-09-02 GB GB2064124A patent/GB240614A/en not_active Expired
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