Long Boiler Designs
The increased distance travelled by many trains highlighted problems with the fireboxes and chimneys. With the co-operation of the North Midland Railway at their Derby works, he measured the temperature of the exhaust gases, and decided to lengthen the boilers on future engines. Initially these "long-boiler" engines were 2-2-2 designs, but in 1844, Stephenson moved the trailing wheel to the front in 4-2-0 formation, so that the cylinders could be mounted between the supporting wheels. It was one of these, the "Great A" along with another from the North Midland Railway, which was compared with Brunel's "Ixion" in the gauge trials in 1846. In 1846 he added a pair of trailing wheels - the first with eight wheels. Another important innovation in 1842 was the Stephenson link motion.
Read more about this topic: Robert Stephenson And Company
Famous quotes containing the words long and/or designs:
“On desperate seas long wont to roam,
The hyacinth hair, thy classic face,
Thy Naiad airs have brought me home
To the glory that was Greece,
And the grandeur that was Rome.”
—Edgar Allan Poe (1809–1849)
“I have nothing against the Queen of England. Even in my heart I never resented her for not being Jackie Kennedy. She is, to my mind, a very gallant lady, victimized by whoever it is who designs the tops of her uniforms.”
—Leonard Cohen (b. 1934)