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Title: |
1904 Article-Marshall, Sons & Co., Compound Steam Traction Engine |
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Source: |
English and American Steam Carriages and Traction Engines 1904 pgs 344 & 347 |
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Insert Date: |
8/19/2011 7:59:06 PM |
MESSRS. MARSHALL, SONS, AND CO.
One of this firm's general-purpose compound traction engines is illustrated by Fig. 212. The steam-jacketed cylinders are mounted on a steel-plate seating near the smoke-box end of the boiler, as shown; the ends of the guides are provided with a similar seating-block. The slide-valves are placed near the top of the cylinder casing; the valve faces are set at an angle, so that the valve-rods point to the centre of the crank-shaft; by this plan the valves are fairly easy of access for setting and adjustment and for scraping up the valve faces when worn. Guides for the valve-rods are mounted on the trunks, the governors also are provided with a seating on the bored guides near the valve-rods.
The sides of the fire-box shell are carried upward and backward for supporting the bearings of the crank-shaft, the counter-shafts, and axle in the usual manner. Flanged cross-plates connect the two side-plates together. The throat or saddle-plate is flanged to a large radius, so that the mud-holes can be placed at the corners. The worm and worm-wheel of the steerage gear are placed inside the chain-barrel brackets. The next engine is illustrated by Fig. 213; it is a compound traction engine fitted with a fore tank, and side-plates for screening the working parts. It will be seen that the general details are similar to the one previously illustrated. The steering-gear is fixed on the fore tank, the stay bar is attached to the tank also. A wood rack in the tender, and a box on the front axle, are included in the outfit of the engine. The first-motion gearing is placed between the bearings of the box brackets; the rest of the gearing is well cased in to protect it from mud and dust. |
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