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A school compendium of natural and experimental philosophy, embracing the elementary principles of mechanics, hydrostatics, hydraulics, pneumatics, ... electro-magnetism, magneto-electricity,; - Softcover
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1860 Excerpt: ... admission of cold water. M is the pump. N is the cistern of cold water in which the condenser is immersed. R is the safety-valve. When the valves are all open, the steam issues freely from the boiler, and circulates through all the parts of the machine, expelling the air. This process is called blowing out, and is heard when a steamboat is about starting. Now, the valves F and Q being closed, and G and P remaining open, the steam presses upon the piston and forces it down. As it descends, it draws with it the end of the working-beam, which is attached to the piston-rod J (but which is not represented in the figure). To this working-beam (which is a lever of the first kind) bars or rods are attached, which, rising and falling with the beam and the piston, open the stop-cock 0, ad The steam and the eduction pipes are sometimes made in forms liffering from these in the figure, and they differ mnoh in different engines. mining a stream of cold water, which meets the steam from the cylinder and condenses it, leaving no force below the piston to oppose its descent. At this moment the rods attached to the working-beam close the stop-cocks G and P, and open F and Q. The steam then flows in below the piston, and rushes from above it into the condenser, by which means the piston is forced up again with the same power as that with which it descended. Thus the steam-cocks G and P and F and Q are alternately opened and closed; the steam passing from the boiler drives the piston alternately upwards and downwards, and thus produces a regular and continued motion. This motion of the piston, being communicated to the working-beam, is extended to other machinery, and thus an engine of great power is obtained. The pump M, the rod of which is connected with the workingbeam, c...
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- PublisherRareBooksClub.com
- Publication date2012
- ISBN 10 1236208013
- ISBN 13 9781236208019
- BindingPaperback
- Number of pages144
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