File:Cassier's magazine (1904) (14582461609).jpg

Identifier: cassiersmagazi2719041newy (find matches)
Title: Cassier's magazine
Year: 1891 (1890s)
Authors:
Subjects: Engineering
Publisher: New York Cassier Magazine Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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p to floorlevel while retaining the advantages oflong connecting links. All the valves controlling the engineare brought together, and in cases ofemergency or accident the engine canbe stopped from any part of the mill.The governor is of the Porter pattern,and is very quick and sensitive in action.The valve gear is of the improved Dobson type, and actuates Corlissvalves. It will be observed that there is a very fine example of the highestclass of Lancashire engine builderswork. Messrs. Pollit & Wigzell, Ltd., ofSowerby Bridge, Yorkshire, are themakers of the two 1000 horse-power,cross - compound horizontal enginesshown in Fig. 2. This illustrationshows the interior of the power housefor one section of the SouthamptonCorporation Tramways. The frames of these engines are aninterestng departure from the almostuniversal trunk-bed style, being some-what on the lines of the familaf gas-engine bed, with the addition of a pairof flat planed slides on which the cross- 428 CASSIERS MAGAZINE
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THE MODERN HORIZONTAL STEAM ENGINE 429 head blocks work. The strength andsolidity of the design is noticeable, par-ticularly in the shape of the casting oneach side of the main bearing, the jawsbeing obviously strong enough to dis-pense with the usual overhanging capspanning the plummer block and actingas a tie. The cylinders, which arefitted with Messrs. Pollit & Wigzellstrip gear of the Corliss valves, are 19and 39 inches in diameter, with a strokeof 42 inches. The fly-wheels are each14 feet in diameter, weigh 20 tons, andmake 100 revolutions per minute. Thesteam pressure is 180 pounds per squareinch, superheated, and all the pistonrods and Corliss valve spindles are,therefore, fitted with metallic packing.The engine nearest the spectator isprovided with the Whitehead governor,and the further one with the Hartnellgovernor, with a view of testing oneagainst the other under identical work-ing conditions. The single-acting air pumps withwhich these engines are fitted were illus-tra

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