US Patent: 737,275
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| Governor
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Patentee:
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| Francis M. Rites (exact or similar names) - Ithaca. Tompkins County, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 08, 1902 |
| Granted: |
Aug. 25, 1903 |
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Patent Pictures:
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Joel Havens
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Description: |
| Abstract:
My invention relates to means for governing multiple-cylinder fluid-pressure motors, such, as steam-engines, and for preventing racing thereof. My invention consists in the combination, with a multiple-cylinder engine, of a governor or governors arranged when the engine exceeds a predetermined speed to move to a reversing position, and thereby to oppose one or more cylinders of the engine against other cylinders thereof, and in other novel features of combination, construction, and arrangement, as hereinafter pointed out in the claims, The objects of my invention are to prevent racing of engines, and particularly of marine engines, in which expansion is conducted in a plurality of successive stages, and to make the governing mechanism simple, compact, effective, and automatic in operation. It is very desirable that multiple-cylinder engines, which are subject to extreme and sudden variations of load, shall be provided with governors which shall control the engine in whichever direction the engine may be running, which may be adjusted while the engine is running to maintain any desired speed, and which shall be quick-acting. Thus accidents to marine engines or the shafts and propellers driven thereby often occur, owing to racing of the engine when, owing to the tossing of the vessel, the propeller leaves the water. At such times the engine, if uncontrolled, gains speed rapidly, thereby imposing excessive strain upon the parts of the engine and the shaft, and when the propeller again enters the water the sudden checking of its speed imposes other very severe strains on the propeller, its shaft, and the engine. For this reason it is often necessary to run the engine of a vessel at a reduced speed at the very time when the most power is desired. - The troubles mentioned are encountered in an extreme degree in torpedo-boats and the like, for such vessels are -relatively small, light, and of small draft, and hence toss violently in a seaway, while their engines, although intended to be driven at a very high speed, are very light in proportion to the power developed and have a very low factor of safety in their parts.
Claim:
In a multiple-cylinder engine, the combination with a plurality of expansion cylinders or chambers having means for transforming energy of fluid-pressure into work, of reversing means for one of said cylinders or expansion-chambers, arranged to reverse the operation thereof with respect to another cylinder or expansion-chamber, and thereby to oppose the action of one such cylinder or chamber to that of another of such cylinders or chambers. |
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