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Title: |
1893 Article-Huber Mfg. Co., Return Flue Steam Traction Engine (Part 2) |
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Source: |
The Engineer Magazine, 08 Sept 1893 pg. 234 |
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Insert Date: |
12/27/2014 7:21:13 PM |
The valve is a plain slide valve driven by one eccentric, and fitted with the Woolf reversing gear. In this gear—see Fig. 20—the end of the short eccentric rod slides by means of a block in a link, one end of which is movable by the reversing lever, and which, therefore, can be set at different inclinations to the stroke of the valve, which is at right angles to that of the eccentric rod. The gear is one of the earliest forms of radial valve gear. The exhaust orifice is variable, as shown in Fig. 21. By opening the globe valve, the exhaust steam escapes through a larger area, and so decreases back-pressure. The driving wheels are 56 in.
in diameter, and have a 14 in. steel tire. The wheel revolves on trunnions, the axle being fixed, and the
springs are between the trunnions and axle, as seen in Figs. 22 and 23, so that they do not interfere at all with the driving gear. The large gear wheels on the drivers are not rigidly attached to them, but have intervening springs, which enable the load to be put on gently. The compensating gear is similar to that of the engine last described, consisting of two spur wheels connected by two spur pinions. There is, however, a special device locking the spur wheels together when desired, as, for instance, when one wheel gets in a soft place in the road. The device consists of a. foot lever driving a collar over against lugs on two of the pinions, and thus preventing them revolving.
Images courtesy of Grace's Guide:
http://www.gracesguide.co.uk/images/e/eb/Er18930908.pdf |
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1893 Huber Mfg. Co., Return Flue Steam Traction Engine Reversing Gear
1893 Huber Mfg. Co., Return Flue Steam Traction Engine Double Exhaust Nozzle
1893 Huber Mfg. Co., Return Flue Steam Traction Engine Clutch Gear
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