. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. ng of the shutterswhich suits a given engine when working with its highest speed and power, will also approximatelysuit it when eased down to its lowest. It seems therefore tliat, alike as to the dimension of instrument suited to engines of very highpower, and as to the adaptability of a given instrument to engines of greatly varied power, therequisite conditions are satisfactorily fulfilled. Having thus shown how the moment of rotation of the screw shaft is wholly communicated tothe casing, which is to be
. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. ng of the shutterswhich suits a given engine when working with its highest speed and power, will also approximatelysuit it when eased down to its lowest. It seems therefore tliat, alike as to the dimension of instrument suited to engines of very highpower, and as to the adaptability of a given instrument to engines of greatly varied power, therequisite conditions are satisfactorily fulfilled. Having thus shown how the moment of rotation of the screw shaft is wholly communicated tothe casing, which is to be dynamometrically prevented from rotating, and is thus to subject the engineto a restraint equivalent to that of obliging it to wind up a weight out of a well of indefinite depth,it remains to be explained in detail how it is proposed to carry out the operation in dealing withany given ship. In order to render it easy to connect the instrument with any given screw shaft, the boss ofthe turbine must be bored out to a diameter considerably larger than that of the largest shaft to which it can have to be applied ; and, to fit it to a given shaft, an internal collar must be prepared,which will fit externally the interior of the turbine boss and internallv the exterior of the screwshaft; and a proper keyway will be required for each fitting. The turbine thus mounted will runtrue on the screw sliaft. The ship, before she leaves the dock for the trial of her machinery, will have the instrumentmounted as described, in place of her screw, Fig. 1086. The casing will be provided with proper 1087.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
