---------------+-------------+-----+--------------+------+------+---- MAKERS' NAME | CYLINDERS. | | HORSE-POWER. | | | AND +-----+-------+ +-------+------+ | | RESIDENCE. | A | B | C | D | E | F | G | H ---------------+-----+-------+-----+-------+------+------+------+---- | |Inches.| In. | | | | | Clayton, | | | | | | | | Shuttleworth | 1 | 7 | 12 | 4 | 4.42 | ... |121.65|3.73 & Co., Lincoln | | | | | | | | | | | | | | | | Brown & May, | | | | | | | | Devizes | 1 | 7-3/16| 12 | 4 | 4.19 | 11.48|125.65|4.44 | | | | | | | | Reading Iron- | | | | | | | | Works Company, | 1 | 5-3/4 | 14 | 4 | 4.16 | ... |145.7 |4.65 Reading | | | | | | | | ---------------+-----+-------+-----+-------+------+------+------+---- These were horizontal engines, attached to locomotive boilers. At a similar exhibition held at Bury, in 1867, considerably better results even than these were reported, as below, from engines of similar size and styles: KEY: A: Number. B: Diameter. C: Stroke. D: Nominal. E: Dynamometric. F: Point of cut off. G: Revolutions per minute. H: Pounds coal per horse-power per hour. ---------------+-------------+-----+--------------+------+------+---- MAKERS' NAME | CYLINDERS. | | HORSE-POWER. | | | AND +-----+-------+ +-------+------+ | | RESIDENCE. | A | B | C | D | E | F | G | H ---------------+-----+-------+-----+-------+------+------+------+---- | |Inches.| In. | | | | | Clayton, | | | | | | | | Shuttleworth | 1 |10 | 20 | 10 | 11.00| 3.10 | 71.5 | 4.13 & Co., Lincoln | | | | | | | | | | | | | | | | Reading Iron- | | | | | | | | Works Company, | 1 | 8-5/8 | 20 | 10 | 10.43| 1.4 |109.4 | 4.22 Reading | | | | | | | | ---------------+-----+-------+-----+-------+------+------+------+---- With all these engines steam-jackets were used; the feed-water was highly and uniformly heated by exhaust-steam; the coal was selected, finely broken, and thrown on the fire with the greatest care; the velocity of the engines, the steam-pressure, and the amount of feed-water, were very carefully regulated, and all bearings were run quite loose; the engine-drivers were usually expert "jockeys."