Section on the line of dip and rise, showing the general effect of the overlying strata upon the buildings.
Scale 6 feet to an inch.
Scale 60 yards to an inch.
This diagram shows two lifting pumps installed in a colliery. The pumps are mounted on a horizontal platform at the surface. Each pump consists of a vertical shaft that extends down into a vertical shaftway. The shafts are connected to a common horizontal beam at the top, which is supported by a triangular frame structure. The shafts are shown with various mechanical components, including what appear to be valves or strainers, and they terminate in a central shaftway that leads down into the ground.
This diagram provides a detailed view of the lifting pumps installed in a colliery shaftway. The shafts are shown extending from the surface down into the shaftway, which is lined with a material (possibly brick or stone). The shafts are equipped with various mechanical components, including valves, strainers, and a central shaftway that leads down into the ground. The shafts are shown with various mechanical components, including what appear to be valves or strainers, and they terminate in a central shaftway that leads down into the ground.
This diagram shows forcing pumps installed in a colliery shaftway. The pumps are mounted on a horizontal platform at the surface. A vertical shaft extends from the surface down into the shaftway. The shaft is connected to a horizontal beam at the top, which is supported by a triangular frame structure. The shaft is shown with various mechanical components, including what appear to be valves or strainers, and it terminates in a central shaftway that leads down into the ground. The shaftway is lined with a material (possibly brick or stone) and has a central shaftway that leads down into the ground.
REFERENCE
- doors
- hammers
- air currents
- direction of air currents
- building and stowing
REFERENCE
- doors
- hammers
- direction of air currents
Showing the method of working whole, coal, and pillars at the same time.
ON AN ENLARGED SCALE.
| Drawing Roads | |
| Roads cut off | |
| Building & Stowing | |
| Air split | |
| Brattice doors | |
| R.R. air regulators | |
| Air crossing | |
| Solid coal |
For preventing loss of life by "Choke Damp" in cases of explosion.
Scale 60 yards to an inch.
Published by A & C Black, Edinburgh, 1854.
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COAL SEAM
SIDE VIEW
FLOOR
ROOF
Stop
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END VIEW
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