Specifications for two horizontal direct-acting compound screw engines for a twin-screw vessel of 1,700 tons displacement each engine, with its auxiliaries of 1,650 i.h.p. under forced draught - Tapa blanda
Sinopsis
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. 1886 edition. Excerpt: ...also with ample oil and grease-cups with hinged covers, and fitted with tubes and wick-holders for each ring; the caps to be well secured in place by four wrought-iron bolts 1 j inches diameter. The blocks will rest on foundations built in the ship, to which they will be secured by four bolts, 2 inches diameter, and otherwise fitted with keys so that they can be accurately adjusted to line in any direction. (The above specification to be held subject to change by introducing a hydraulic registering device for showing the actual thrust on the shafting.) SPRING-BEARING. The line-shafting of forward-engine, where it passes through after-engine compartment, will be supported from the centerengine keelson by a spring-bearing having a length of at least 12 inches. JACKING-WHEELS. There is to be a cast-steel ring keyed on the periphery of the forward coupling of each thrust-shaft; to have an outside diameter of 33 inches and with 4 inches face, and to be drilled with fifteen 3-inch holes equispaced around the circle at a radius of 14 inches. The holes to be slightly tapered and smoothly reamed. Four steel pins will be required to fit the holes in jacking-wheels. FLEXIBLE COUPLINGS. The crank-shafts of both engines will be connected to their respective sections of shafting by 10 steel-pins, lf inches diameter where they pass through the crank-shaft couplingdiscs, in which they will be secured by finished steel nuts with suitable locking-device, and 2 J inches diameter where they project into the coupling-discs of thrust and line-shafting. These discs will stand off from the faces of crank-shaft coupling-discs about J of an inch, and each pin will be fitted with an approved automatic lubricating device. FRICTION-BANDS AND WHEEI3. Steel friction bands 4...
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Reseña del editor
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. 1886 edition. Excerpt: ...also with ample oil and grease-cups with hinged covers, and fitted with tubes and wick-holders for each ring; the caps to be well secured in place by four wrought-iron bolts 1 j inches diameter. The blocks will rest on foundations built in the ship, to which they will be secured by four bolts, 2 inches diameter, and otherwise fitted with keys so that they can be accurately adjusted to line in any direction. (The above specification to be held subject to change by introducing a hydraulic registering device for showing the actual thrust on the shafting.) SPRING-BEARING. The line-shafting of forward-engine, where it passes through after-engine compartment, will be supported from the centerengine keelson by a spring-bearing having a length of at least 12 inches. JACKING-WHEELS. There is to be a cast-steel ring keyed on the periphery of the forward coupling of each thrust-shaft; to have an outside diameter of 33 inches and with 4 inches face, and to be drilled with fifteen 3-inch holes equispaced around the circle at a radius of 14 inches. The holes to be slightly tapered and smoothly reamed. Four steel pins will be required to fit the holes in jacking-wheels. FLEXIBLE COUPLINGS. The crank-shafts of both engines will be connected to their respective sections of shafting by 10 steel-pins, lf inches diameter where they pass through the crank-shaft couplingdiscs, in which they will be secured by finished steel nuts with suitable locking-device, and 2 J inches diameter where they project into the coupling-discs of thrust and line-shafting. These discs will stand off from the faces of crank-shaft coupling-discs about J of an inch, and each pin will be fitted with an approved automatic lubricating device. FRICTION-BANDS AND WHEEI3. Steel friction bands 4...
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