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July, 1914 struction is untsually rugged and heavy for marine work, but it is part- ly necessitated by the comparatively high blade speed of the impulse wheels, which is 525 ft. a second at full power. As the effective mean diameter of the ahead and astern re- action sections of the turbine are the FIG, same, a single dummy located between the two impulse wheels serves for both the ahead and astern reaction sections. However, any slight unbal- anced end thrust which may arise in either the fore or aft direction, is amply taken up by a Kingsbury thrust bearing, which is clearly shown in the longitudinal cross section. It THE\:MARINE REVIEW will be recalled that the Kingsbury thrust bearing consists of a number of independent babbitted shoes, each supported on a spherical seat formed in a ring, which itself is spherically seated in the bearing housing, thus permitting each shoe te] adjast i self independently so as to obtain a 9 uniform bearing pressure over its en- tire surface, and the spherical seating of the shoe supporting ring permits the individual shoes to distribute : single collar on the shaft thus serves of the numerous collars used in the older type of thrust adjusting load equally among each other. in place bearing. 279 The turbine bearings are of the standard Westinghouse spherical seated type, with loose keys and shims, permitting centering the tur- bine spindle without the necessity of rebabbitting and boring the bearings exactly concentric with the bearing housing. The turbine glands are a modified type of labyrinth packing, as shown in Fig. 10, consisting of a brass sleeve A on the shaft, in which a snap ring B fits and packs the sleeve C. The sleeve. C, which is made in halves, is held together by the rings DD, which are screwed on tapered threads. The sleeve C fits snugly, but not tight, on the sleeve A and rotates with the shaft, but end movement of the sleeve C relative to the shaft is permitted so that the collars of the sleeve C, which fit in the bushing E with a few thousandths clearance, will not bind or press too heavily against the busi E when the spindle moves endwise from expansion or in taking up the slight end motion of the spindle in the thrust adjustment bearing. A feather key G partly recessed in the sleeve A and partly in sleeve C, drives the latter with the turbine shaft. Stationary Reaction Blades The bushing E is screwed into a second bushing, as shown, thus per- mitting the whole stuffing box to he removed from _ the turbine without removing the turbine cover. Steam for sealing and lubricating the laby- rinth is supplied. through the inlet /. The stationary reaction blades in- stead of being held in the turbine cylinder proper, as is customary in marine turbines, are held in loose cast steel rings, which are doweled in the turbine cylinder so that they can be easily removed. This obviously permits the carrying of spare rings, biaded ready for use, thus facilitating rapid repairs in the event of damage to either the ahead or astern reaction blading. The loose reaction blade rings are clearly shown in Fig. 3, which shows the starboard turbine on the test floor with the upper half of the turbine casing removed. The frontispiece shows the upper half of the reaction cylinder blade rings re- moved, exposing the spindle to view. The auxiliary steam inlet to the ahead reaction blading connects into the space 4, Fig. 8, and through the holes shown in the reaction cylinder blade rings to the low pressure ahead blading. The pressure at the point of admission of the auxiliary exhaust is about 16 lbs. absolute at full power. The valve shown, connecting the astern impulse wheel chamber with the condenser, is provided to permit