. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 171. TYPES OF SLIDE VALVES. Slide valve of the Chandler& Taylor tandem compound engine. The valve is of the gridiron type, and is double-ported for both steam andexhaust, making it possible to admitlarge amounts of steam into each end ofthe cyHnder quickly and with a
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 171. TYPES OF SLIDE VALVES. Slide valve of the Chandler& Taylor tandem compound engine. The valve is of the gridiron type, and is double-ported for both steam andexhaust, making it possible to admitlarge amounts of steam into each end ofthe cyHnder quickly and with a veryshort valve travel. The valve, beinglight and perfectly balanced by meansof the pressure plate on its top side, istherefore very easily acted upon by 84 STEAM POWER APPLIANCES. 172. TYPES OF SLIDE VALVES. Slide valve of the Brownellengine. The valve is of the box type, double-ported for both steam and exhaust, and practically perfectlybalanced. The steam pressure is re-moved from the back of the valve bymeans of a balance ring which bearsagainst the steam-chest cover. A coilspring serves to keep the ring against thechest cover, thus taking up the wearautomatically and preventing the ring
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