ed to rollers become worn on their peripheries, the bearings erting its pressure against the sides of the valve, so may be moved nearer to each other. The sharpening that it only rests by its own weight in the bottom of an engine, and the tender arrives opposite the frame, rollers are preferably… … the middle of the upper plate is a WARD'S SLIDE VALVE FOR ENGINES. In view of this, Dr. Orton urges the hopper, opening downward through imperative necessity for cities and States to take action restricting the lavish and wasteful use of gas. Even the strictest regulations cannot pre- shown in…
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