Compressed air practice in mining by Penman David

Author:Penman, David
Language: eng
Format: epub, pdf
Tags: Compressed air, Mining engineering, Mining machinery
Publisher: London C. Griffin
Published: 1922-03-25T05:00:00+00:00

COMPRESSED AIR PRACTICE IN MINING

its own casing, in a hole drilled through the crank shaft, to each bearing and to the gudgeon-pin bearing at the piston end of the connecting-rod. The oil pump is omitted from Fig. 65 for the sake of clearness,

Fig. 65. Broom and Wade's Compressor.

but is shown in outline in Fig. 66. In this figure is also indicated the air-goveming device.

ACTION OF AIR-GOVERNOR. —Fig. 67 shows in detail the action of the air-govemor. When the desired air pressure is reached in the receiver, the air pressing upon the valve G pushes it from its seat and forces the valve H on to its seat, moving the adjusting screw J and putting a strain upon the spring L through the toggle levers K. The air passing the valve G is admitted to the small cylinder containing

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