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US Patent: 26,074
Portable Traction Locomotive
Joseph Barrans - Peckham, Surrey County, England

USPTO Classifications:
180/40, 301/36.1, 301/43

Tool Categories:


Not known to have been produced

A. S. Lodge
J. Henry Johnson

Patent Dates:
Granted: Nov. 08, 1859

Patent Pictures:
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This invention has for its object improvements in traction and portable steam engines as suited for various uses. For these purposes in constructing such kinds of engines in order to support the weight of the boiler and the steam cylinder or cylinders a beam or lever is applied at the under part thereof, the hinder end of this beam or lever moves on an axis the bearings of which are fixed to the boiler. The beam or lever carries a box or apparatus for receiving a vulcanized India rubber spring or a spring of other suitable material and the smoke box end of the boiler rests on, and is supported by, the spring. The fire box end of the boiler is carried by the axle of the hinder or driving wheels there being vulcanized India rubber or other suitable springs interposed between the axle and the bearing parts of the boiler. The fore end of the lever beam is formed into an axle on which the fore carriage and locking motion are arranges, to turn so as to admit of the fore axle inclining to the one side or to the other as regards the horizontal line in the event of passing over an uneven surface thus either front wheel may rise without interfering with the due horizontal level of the engine framing. The driving wheels are driven by spur pinions gearing into cog wheels fixed to the driving wheels and by preference there are two sizes of pinions used, so as to give at different times different speeds of driving, and when such is the case it is preferred to have the cog wheels which are fixed to the driving wheels cogged on their inner and outer surfaces and in order to keep the axle of the driving wheels and the axes of the pinions correctly distanced they are connected by suitable links or framing and the two pinions which drive either of the cog wheels are arranged in such manner that when the slow speed is desired, the pinion on the axis which receives its motion from the engine, slides on its axis out of gear with its cog wheel into gear with an intermediate wheel which is on the axis of the other pinion and the axis of such pinion is moved into and out of position by an eccentric or otherwise. In constructing the driving wheels, each wheel consists of two or more parts or rings which are so arranged that all may press on the ground and act as one wide ring thereon or only one or more of the parts or rings of which a wheel is composed may bear on the ground and one or more of the rings are made plain on their peripheries while another or others is made with fixed teeth or transverse projections to give them a more secure holding preferring that such teeth or projections shall not go from side to side of a wheel or extend right across the wheel face but only partly so and that they shall alternate. The fore wheels may also each be composed of two or more parts or rings.

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