The Marine Steam Engine; a Treatise for the Use of Engineering Students And Officers of the Royal Navy
The Marine Steam Engine; a Treatise for the Use of Engineering Students And Officers of the Royal Navy
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In our eReader you can find the full English version of the book. Read The Marine Steam Engine; a Treatise for the Use of Engineering Students And Officers of the Royal Navy Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Marine Steam Engine; a Treatise for the Use of Engineering Students And Officers of the Royal Navy
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This arrangement is practically equivalent to two slide-valves placed back to back. The steam is admitted to the space in the centre between the two faces of the valve and passes out through ports in the opposite faces, so that the valve is in equilibrium and no pressure is produced between the rubbing surfaces. These valves require great care in adjustment to bring the faces suffi- ciently close together to be steam-tight without causing them to press hard against each other.
255 CHAPTER XV.
S...TARTING AND REVERSING GEARS.
All marine engines must be arranged so as to be capable of being worked in opposite directions, in order that the ship may be driven either ahead or astern as may be required. It is necessary, therefore, that suitable re- versing gear should be fitted to enable the slide-valves to be placed in the proper positions to produce revolution of the crank-shaft in the desired direction, whether it be ahead or astern.
Loose eccentric. — In the earlier engines, that were used in paddle-wheel steamers, this was accomplished by means of a single eccentric, which, instead of being firmly keyed to the shaft, fitted loosely on it, and was driven by stops, fixed in suitable positions on the shaft, to give either ahead or astern motion as required.
What to read after The Marine Steam Engine; a Treatise for the Use of Engineering Students And Officers of the Royal Navy?
You can find similar books in the "Read Also" column, or choose other free books by Richard Sennett to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This arrangement is practically equivalent to two slide-valves placed back to back. The steam is admitted to the space in the centre between the two faces of the valve and passes out through ports in the opposite faces, so that the valve is in equilibrium and no pressure is produced between the rubbing surfaces. These valves require great care in adjustment to bring the faces suffi- ciently close together to be steam-tight without causing them to press hard against each other.
255 CHAPTER XV.
S...TARTING AND REVERSING GEARS.
All marine engines must be arranged so as to be capable of being worked in opposite directions, in order that the ship may be driven either ahead or astern as may be required. It is necessary, therefore, that suitable re- versing gear should be fitted to enable the slide-valves to be placed in the proper positions to produce revolution of the crank-shaft in the desired direction, whether it be ahead or astern.
Loose eccentric. — In the earlier engines, that were used in paddle-wheel steamers, this was accomplished by means of a single eccentric, which, instead of being firmly keyed to the shaft, fitted loosely on it, and was driven by stops, fixed in suitable positions on the shaft, to give either ahead or astern motion as required.
What to read after The Marine Steam Engine; a Treatise for the Use of Engineering Students And Officers of the Royal Navy?
You can find similar books in the "Read Also" column, or choose other free books by Richard Sennett to read onlineMoreLess
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