. Science of railways . Valve to admit water from Con-denser to Oil Reservoir. 0-0-0âRegulating Feed Valves. ,C-CâAuxiliary Oilers operative withThrottle open or closed. P-PâAuxiliary Oiler Filler Valves. R-RâAuxiliary Oiler Feed Valves. ^->S->SâLifting Stems to hold Auto-matic Check Valves off theirSeats so Glasses will fill withWater of Condensation whenempty. F-F-FâValves to drain Sight-FeedGlasses without emptying OilReservoir. K-K-KâRemovable Plugs for renew-ing or cleaning Sight-FeedGlasses. 7âGauge Glass, GâValve to drain Oil Reservoir. 452 LOCOMOTIVE APPLIANCES MICHIGAN SIGHT-FEE
. Science of railways . Valve to admit water from Con-denser to Oil Reservoir. 0-0-0âRegulating Feed Valves. ,C-CâAuxiliary Oilers operative withThrottle open or closed. P-PâAuxiliary Oiler Filler Valves. R-RâAuxiliary Oiler Feed Valves. ^->S->SâLifting Stems to hold Auto-matic Check Valves off theirSeats so Glasses will fill withWater of Condensation whenempty. F-F-FâValves to drain Sight-FeedGlasses without emptying OilReservoir. K-K-KâRemovable Plugs for renew-ing or cleaning Sight-FeedGlasses. 7âGauge Glass, GâValve to drain Oil Reservoir. 452 LOCOMOTIVE APPLIANCES MICHIGAN SIGHT-FEED LUBRICATOR. The maniifacturers of this lubricator claim toovercome the *hold-up* of oil in the tallow pipes,and to insure a delivery of oil direct to the steamchest with wide open throttle and any position ofreverse lever. The principle by which it is claimed that thishold-up of oil in the tallow pipes is prevented isshown in Fig. 2, which illustrates the automatic AUTOMATIC S7£AM CHCST PLl/Q GHOHC. ^,CffO*tC Fig. 2. Vertical longitudinal section of Michigan automatic steam chest plug, bhowing the large area and its ball valve, associated with a constant choke at the side thereof. steam chest plug. This device has a ball valve, theseat of which is about equal in area to the inside of the LOCOMOTIVE APPLIANCES. 453 tallow pipes of the locomotive, and having at one sideof this seat the choke opening. The cylinder feedsJ J, Figs. 1 and 3, have no chokes within the lubri-cator. Hence a full current of steam is delivered fromthe boiler through the steam tube, condenser, equaliz-ing tubes and tallow pipes to these automatic plugsat each steam chest, thus giving a complete steamarea from the boiler to the steam chest about equal tothat of the tallow pipes. Consequently, when thelocomotive throttle is wide open, the forward pressurefrom the lubricator practically equalhng the backpressure from the steam chest, the ball in the steamchest plug drops by gravity from its seat
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidscienceofrailway14kirk
