This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: ...a nearly perfect vacuum in the working chamber just emptied of liquid. The steam valve-ball then changes its seat, so as to prevent the further admission of steam, and the atmospheric pressure outside forces a fresh supply of liquid into the working chambers, through the suction pipe, and past the valves in the foot ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: ...a nearly perfect vacuum in the working chamber just emptied of liquid. The steam valve-ball then changes its seat, so as to prevent the further admission of steam, and the atmospheric pressure outside forces a fresh supply of liquid into the working chambers, through the suction pipe, and past the valves in the foot-valve chamber and working chambers, which valves readily lift for admission, and close when the operation is reversed. The instant the steam valve-ball changes its seat, steam centers the second chamber, from which it forces the liquid into the discharge pipe in a-Fig. 9. The Pulsometer (Pulsometer Steam Pump Co., 18 Battery PI., New York). manner exactly like that just described. When this chamber is emptied, the steam valve-ball again changes its seat, steam enters the first chamber as before, condensation takes place in the second, creating a vacuum, the liquid is again expelled from the former and admitted to the latter, and in this manner a continuous outflow of liquid is maintained as long as steam and the liquid to be handled are supplied to the pump, the chambers being filled alternately with steam and liquid. The pulsometer is wasteful of steam but its cheapness, simplicity of construction and its ability to handle grit makes it useful in many instances. It has found favor in paper mills for handling liquid pulp and hot liquids, in print works for emptying dye vats, in tanneries for moving tan liquors and in potteries for raisng liquid clay. It can be set up anywhere at any time and attached to a steam line by a hose, etc. Hydraulic rams may now be obtained in large sizes and may be made to elevate water from 25 to 30 ft. for every foot fall available. Hence they are becoming much more used. As they cost nothing to operate, they may oft...
Read Less
