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Title: |
1904 Article-Port Huron Engine & Thresher Co., Steam Traction Engine (pt 1) |
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Source: |
English and American Steam Carriages and Traction Engines 1904 pgs 403-407 |
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Insert Date: |
8/29/2011 5:19:42 PM |
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THE PORT HURON ENGINE AND THRESHER CO. — Their neatly got up catalogue commences as under: "There are three classes of traction engines. Heavy Weight, as English makes.—Built much heavier in some parts than necessary for the work they have to do. Middle Weight.—Port Huron, correctly proportioned. Each part designed especially for the work it has to do and the strain it has to stand. Light Weight.—Those American and Canadian makes built with the sole idea of making them of light weight without regard to correct proportions." Our readers will form their own opinions respecting the above remarks. The Port Huron traction engines are speeded to run at 220 revolutions per minute; this gives a travelling speed of 2.1 miles an hour. A round-bottom locomotive boiler is used. The round-bottom fire-box is most convenient for cleaning, as the mud all settles in one place, where it is easily removed; the flat fire-box top is stayed to the shell, as shown; longitudinal stays are also employed. The straw-burning fire-box is shown by Fig. 245. The straw is fed through a funnel of the ordinary shape. A deflecting plate is shown inside the fire-box, which directs the straw and draught from the door in a downward direction, which aids combustion and prevents the chaff from being drawn up by the draught around the deflecting plate towards the tubes. The compound cylinder is illustrated by Fig. 246. One valve admits steam to both cylinders. It will be seen that there are only two stuffing-boxes; metallic packing is used between the two cylinders. Fig. 247 shows a compound traction engine fitted with a cab and canopy; the cylinders are placed well forward; the engine frame is on the ordinary lines. The distribution of cast-iron is such that all strains by the piston bring the line of tension within the greatest resistance for weight of metal used. The tables (pp. 405-6) give some useful information. |
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1904 Port Huron Engine & Thresher Co., Compound Steam Traction Engine
1904 Port Huron Engine & Thresher Co., Compound Steam Traction Engine Fire-Box
Compound Steam Traction Engine Compound Valve & Cylinders
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