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Updated: May 18, 2025
"Serves 'em right for putting German compos in their thrust-blocks. She won't be in Fayal to-night! By the way, wouldn't you like to look round the engine-room?" I have been waiting eagerly for this invitation and I follow Captain Hodgson from the control-platform, stooping low to avoid the bulge of the tanks.
Overhead the dark and bulky cylinders cut against the reflected glimmer on the skylights; below, valve-gear and connecting-rod flashed across the gloom, and the twinkling cranks spun in their shallow pit. One saw the big columns shake and strain as the crosshead shot up and down; the thrust-blocks groaned with the back push of the propeller.
The considerations outlined regarding balancing pistons and dummy rings can be dispensed with in connection with impulse turbines of the De Laval and Rateau types, and also with double-flow turbines of a type which does not possess any dummies. The same general considerations respecting blade conditions and thrust-blocks are applicable, especially to the latter type.
She sends her shipwrights, carpenters, and other experts on board the afflicted one and, with a large wooden patch, more oakum, and buckets of red and white lead, the destroyer is made sufficiently seaworthy to proceed to the nearest dockyard. Again, there may be engine-room defects, such things as over-heated thrust-blocks, stripped turbines, and leaky valves.
Wind-noses for dirigibles Pegamoid, cane-stiffened, lacquered cane or aluminum and flux for winter work. Smoke-ring cannon for hail storms, swivel mounted, bow or stern. Compressed steel bow-screws for winter work. Fused Ruby or Commercial Mineral Co. bearings and collars. Agate-mounted thrust-blocks up to 4 inch. Radium batteries, all powers to 150 h.p. Helium batteries, all powers to 300 h.p.
After ascertaining the condition of the dummy rings, attention might next be turned to the thrust-block, which must not on any account be tightened up too much. It is sufficient to say that the actual requirements are such as will enable a very thin film of oil to circulate between each wall of the spindle thrust-grooves and the brass thrust-blocks ring.
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