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Title: |
1891 Article-Wallis & Steevens, Steam Road Roller |
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Source: |
The Engineer Magazine, 26 Jun 1891, pgs. 506 & 507 |
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Insert Date: |
1/3/2013 8:09:03 PM |
A steam road roller, exhibited by Messrs. Wallis and Steevens, is illustrated by the engraving on page 507. The roller is, of course, primarily for rolling, but it is equally suited for driving stone breakers and other machinery, or to be used—when supplied with road wheels—as a traction engine to haul the stones, &c., for the road repairs, or other work. By this means the roller can he kept in constant work. The design of the engine parts is similar to that of the same makers‘ traction engines. The cylinder is steam jacketed, being in direct communication with the boiler. The steam is carried over the cylinder to a domed chest before passing into the steam chest, to prevent any priming. The piston-rod, crank, second motion shaft, and main axle are made of steel. The gearing is of the best cast crucible steel, and completely protected. The crank-shaft bearings are carried on wrought iron saddle box, which is carried up from the boiler, thus obtaining rigidity. The boiler is made of steel plates, longitudinal seams double riveted, the riveting being done by machinery under a pressure of about fifty tons. The fire-box is of Lowmoor iron, and lap-welded tubes are used. The tender is of thick steel plates, and contains water tank and coal bunker. The boiler is lagged with wood and sheet iron. The wheels have wrought iron spokes, and cast iron rims of hard tough iron. The hind wheels are provided with holes for insertion of frost spikes or short spikes for picking up roads, which can be put in when required. The roller is fitted with two speeds, the slow one for use when rolling, and the fast one for use when traveling from place to place or hauling. The roller can be turned in a space not much exceeding its own length. The regulator, reversing lever, steering wheel, &c., are arranged so that they all come readily to hand, and can be easily worked by one man.
Image Courtesy of Grace's Guide
http://www.gracesguide.co.uk/File:Im1891EnV71-p507.jpg |
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1891 Wallis & Steevens, Steam Road Roller
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