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Title: |
1876 Article-Charles Burrell & Sons, Ltd., 6 H. P. Steam Traction Engine |
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Source: |
The Engineer Magazine, 04 Feb 1876, pg. 79 |
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Insert Date: |
1/22/2013 9:30:23 PM |
Messrs. Burrell, of Thetford, have long been known as eminently successful makers of road locomotives. Indeed, Mr. Burrell was one of the first to take up the construction of this class of machinery in England, and he made one of the most successful of Boydell’s engines.
At the last Smithfleld Club Show, Messrs. Burrell exhibited the engine, which we illustrate in the accompanying engravings. The cylinder, which is placed at the forward end of the boiler, is 8 in. diameter and 10 in. stroke. The driving wheels are 5ft. 6 in. diameter by 12 in. wide, and are made with cast iron naves, wrought spokes and wrought rims, with diagonal cross plates riveted on. These wheels are fitted with wrought iron case-hardened bushes, and revolve on the axle, which is stationary. The leading wheels are 8 ft. 9 in. diameter by 9 in. wide, and are made in a similar manner. The boiler is of the ordinary locomotive type, with straight top and is extra stayed to bear a working pressure of 120 lb. to the square inch.
The heating surface is 115 square feet. The water tank holds 110 gallons. The steerage is worked from the foot-plate. Weight of engine 5 tons 17 cwt. The driving power is transmitted from crank shaft by spur gearing on to an intermediate wheel, which also acts as a speed wheel to make the engine travel at two velocities; this speed wheel gears into a spur wheel on the countershaft, which has a pinion at each end driving direct on to internally geared rings fastened to the driving wheels. The spur wheel on the countershaft is fitted with differential gear or compensating motion, shown enlarged in the detail drawing above, which enables the engine to turn the sharpest curves with ease. Provision is also made to set this compensating gear fast in the event of the engine getting into a difficulty, and requiring the whole power to be applied to one wheel.
Image Courtesy of Grace's Guide
http://www.gracesguide.co.uk/File:Im1876EnV41-p079.jpg |
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1876 Charles Burrell & Sons, Ltd., 6 H. P. Steam Traction Engine
1876 Charles Burrell & Sons, Ltd., 6 H. P. Steam Traction Engine (Differential Gear)
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