A Library of Steam Engineering

Front Cover
Ohio Valley Company, 1894 - 803 pages
 

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Page 410 - ... employs any other means or device whereby the boiler may be subjected to a greater pressure than the amount allowed by the inspectors...
Page 412 - ... and each spring-loaded valve shall be supplied with a lever that will raise the valve from its seat a distance of not less than that equal to one-eighth...
Page 410 - ... intentionally deranges or hinders the operation of any machinery or device employed to denote the state of the water or steam in any boiler, or to give warning of approaching danger, or...
Page 412 - ... so as to give an effective area equal to that of the aforementioned spring-loaded safety valve, may be used in lieu of the common lever-weighted...
Page 409 - ... machinery, and the appurtenances, may be safely employed in the service proposed in the written application, without peril to life. They shall also satisfy themselves that the safety-valves are of suitable dimensions, sufficient in number, and well arranged; and that the weights...
Page 337 - ... knowledge and experience of the duties of an engineer employed in navigating vessels by steam, and also of the construction and use of boilers, and machinery and appurtenances therewith connected, is able to form a reliable opinion of the strength, form, workmanship, and suitableness of boilers and machinery to be employed, without hazard to life from imperfection in the material, workmanship, or arrangement of any part of such apparatus for steaming.
Page 336 - ... his practical knowledge of shipbuilding and navigation and the uses of steam in navigation is fully competent to make a reliable estimate of the strength, seaworthiness, and other qualities of the hulls of...
Page 456 - Lap-welded flues required to carry a steam pressure exceeding 60 pounds per square inch, and not exceeding 120 pounds per square inch, and having a diameter not exceeding 16 inches and a length not exceeding 18 feet, and made in sections not exceeding 5 feet in length, and fitted properly one into the other and substantially riveted : and AH such tubes and flues shall have a thickness of material according to their respective diameters, as prescribed in the following table: Outside diameter.
Page 337 - Commission ; and if, upon full consideration, they are satisfied that his character, habits of life, and physical condition are such as to authorize the belief that he is a suitable and safe person to be entrusted with the powers and duties of such a station, they shall grant him a license, authorizing him to be employed in such duties for the term of...
Page 332 - A, is measured by employing a scale corresponding to the number of the spring used in the indicator. The distance thus found is the mean effective pressure, expressed in pounds per square inch of piston. The...

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