GB249259A - Improvements in or relating to coal-cutting machines and trolleys therefor - Google Patents
Improvements in or relating to coal-cutting machines and trolleys thereforInfo
- Publication number
- GB249259A GB249259A GB158225A GB158225A GB249259A GB 249259 A GB249259 A GB 249259A GB 158225 A GB158225 A GB 158225A GB 158225 A GB158225 A GB 158225A GB 249259 A GB249259 A GB 249259A
- Authority
- GB
- United Kingdom
- Prior art keywords
- machine
- coal
- axis
- trolley
- rollers
- 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 OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
- E21C29/22—Propulsion of machines for slitting or completely freeing the mineral from the seam by wheels, endless tracks or the like
- E21C29/24—Trucks carrying the machine while working
- E21C29/26—Trucks carrying the machine while working with means for adjustably positioning the machine on the truck
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)
- Turning (AREA)
Abstract
249,259. Rimmer, G., and Hoy, A. Y. Jan. 19, 1925. Coal-cutting machines. - For a coal-cutting machine of the swinging-jib type, such as that described in Specification 211,475, a railway trolley is provided with a mounting so constructed as to receive the machine and to enable such machine to be rotated about a longitudinal axis so as to alter the position of the plane of the cutters 5. Fig. 1 shows a trolley 1 with a segmental runway 2 into which fits a similarly curved attachment 4 of the coal-cutting machine 3, which may be rotated so that the cutter 5 may be moved through 90‹, as shown in full and chain lines. Rollers may be fitted between the parts 2, 4. The machine shown in Fig. 3 has T-section attachments 4 running on rollers 8 in the trolley. It may be removed bodily, and is secured in position by sliding bolts and by flanged gripping-jaws 14 operated by a screw 16. The rotation of the machine about its axis may be effected manually or mechanically. The truck is driven by the motor of the machine through a shaft 22 coaxial with the axis of the attachments 4; the shaft 22 has a clutch 24 for connecting up the gearing 23, 29, 30, 32, 33 for driving the track wheels 31. If this gear is locked, for example by a detent 34, the reaction of the motor will cause the machine to rotate about its axis. A track brake 35 is fitted, and a band-brake 36 is associated with the jib to control it. These have controls 37, 38. Specification 197,970 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB158225A GB249259A (en) | 1925-01-19 | 1925-01-19 | Improvements in or relating to coal-cutting machines and trolleys therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB158225A GB249259A (en) | 1925-01-19 | 1925-01-19 | Improvements in or relating to coal-cutting machines and trolleys therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB249259A true GB249259A (en) | 1926-03-25 |
Family
ID=9724448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB158225A Expired GB249259A (en) | 1925-01-19 | 1925-01-19 | Improvements in or relating to coal-cutting machines and trolleys therefor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB249259A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5307257A (en) * | 1991-02-22 | 1994-04-26 | Matsushita Electric Industrial Co., Ltd. | Transformerless power-supply unit for supplying a low DC voltage |
-
1925
- 1925-01-19 GB GB158225A patent/GB249259A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5307257A (en) * | 1991-02-22 | 1994-04-26 | Matsushita Electric Industrial Co., Ltd. | Transformerless power-supply unit for supplying a low DC voltage |
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