Specifications for Two Horizontal Direct-Acting Compound Screw Engines for U.S.S. Charleston, of 3,730 Tons Displacement, the Engines, with Their Auxi (English, German, Paperback)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1886 edition. Excerpt: ... boilers are to be separate up to a short distance above the main deck, where they will be united. Above the smoke-pipe hatch, an oval jacket, with a 6-inch annular space, will surround the smokepipe for 2 feet 3 inches, and be covered by a hood with sufficient opening for the escape of hot air. There will be plates in uptakes, as shown, to protect the ends of boiler-braces. UPTAKE DOORS. The uptake doors are to be constructed the same as walls of uptakes where in conta ct with flame. They will be in four parts for each boiler, do uble-hinged as shown. They will be provided with wrought-iron hinges and latches of approved pattern. DAMPERS. There is to be a damper in uptakes for each boiler. These are to be so fitted as to be easily worked from their respective fire-rooms. They will conform to detail drawings, if furnished. Otherwise they will be made of such pattern as may be submitted by the contractor and approved. SMOKE-PIPE. There is to be one smoke-pipe, flat-sided, with rounded ends, 60 feet in total height above the upper grate-bars. It is to be made of-A-inch wrought-iron, with all joints butted and strapped, and is to be fitted with internal stiffening stays as required. The pipe is to be provided with eyes, stays, and shackles of approved dimensions and pattern, and is to be so supported as to relieve the uptake of its weight. It is to be finished at top by a ring of flat and half-round iron, as shown. A permanent ladder reaching to the top of the pipe on the outside is to be fitted as directed. From the top of uptakes to a short distance above the upper de3k the shell of the pipe will be double and filled with silicate cotton the same as uptake casings. Four single-sheaved blocks to be fitted on top rim of pipe for slinging...