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Title: |
1904 Article-Allchin & Co., Steam Traction Engine |
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Source: |
English and American Steam Carriages and Traction Engines 1904 pg 294 |
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Insert Date: |
8/15/2011 12:41:24 PM |
MESSRS. W. ALLCHIN AND CO.
Fig. 186 shows the gearing side of a single-cylinder general-purpose traction engine. The cylinder is steam jacketed and efficiently drained, the liner is of special cast-iron to ensure durability. Some portion of the gearing is placed between the bearings of the side plates, thus avoiding over-neck pinions on the crank-shaft. Most of the leading makers now use the inside gearing four-shaft type of traction engine, of which this is an example. The winding - drum contains sixty yards of steel wire rope, which can be run out as the engine travels forward. It will be seen from the illustration that the feed-pump is placed inside the horn-plate on the gearing side; the steerage is also arranged on the same side. A bored guide is adopted in lieu of slide bars. Some of the bearing brackets are riveted to the horn-plates; by this arrangement all the strain is taken by the plates, the rivets merely keeping the brackets in place.
It is a question whether hot-riveting the castings on is preferable to well-fitting bolts driven in with a heavy hammer. In some instances known to the writer rivets not being a good fit in the holes have worked loose; the only remedy under the circumstances was the removal of the rivets, and their places taken by bolts. No manhole is provided in the boiler barrel, but a filling hole is arranged in the cylinder-foot on the steam-chest side. Flat rods are used for the link-motion; the reversing lever and the brake are placed on the flywheel side as shown. A box is hung from the front axle for carrying loose tools. The working pressure is I40 lbs. to the square inch, while the hydraulic test pressure is 300 lbs. to the square inch. |
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1904 Allchin & Co., Steam Traction Engine
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