Baker and Valliant
of Wigan
1879 Made a horizontal engine to drive a Guidal fan at Pemberton Colliery 'from the designs of Mr. James Burrows, and having two cylinders, one at each end of the bed plate, 36 in. in diameter by 3 ft. 6 in. stroke. The crankshaft is placed between the cylinders, and ordinarily only one cylinder is used at a time, the other being merely kept as a stand by. The steam and exhaust valves are Cornish driven by one eccentric, and are capable only of providing for a very small range of expansion. This engine is of most massive and substantial design, indeed we are not acquainted with any engine having such a proportion of weight to cylinder volume; there is, however, nothing clumsy even in appearance about it, and we are convinced it is admirably adapted for the work it has had to do and that it can be thoroughly depended on to run day and night for months together without stopping.'[1]