. Bulletin. Science. Figure 5.—Detail drawing of the radius-bar truck, patented by William S. Hudson in 1864, as applied to the New Jersey Railroad and Transportation Company No. ^. From Gustavus W^eissenborn, Americati Locomotive Engineering and Railway Mechanism, New York, 1871, pi. 8. the blocks, descend to the bottom of the inclines and the engine is prevented from acquiring a sidewise or oscillating motion. Bissell applied for a patent on April 23, 1857. His petition was initially denied. A weary debate of several months duration followed between the patent examiner and BisselPs atto
. Bulletin. Science. Figure 5.—Detail drawing of the radius-bar truck, patented by William S. Hudson in 1864, as applied to the New Jersey Railroad and Transportation Company No. ^. From Gustavus W^eissenborn, Americati Locomotive Engineering and Railway Mechanism, New York, 1871, pi. 8. the blocks, descend to the bottom of the inclines and the engine is prevented from acquiring a sidewise or oscillating motion. Bissell applied for a patent on April 23, 1857. His petition was initially denied. A weary debate of several months duration followed between the patent examiner and BisselPs attorneys. During this time Bissell was busy promoting the application of his truck even though he had no patent for protection. In May of 1857 he showed a working model of his improvement to Gilbert M. Milligan, secretary of the Central Railroad Company of New Jersey.^ Samuel L. Moore, master mechanic of that railroad, also inspected the model. Both were so impressed that it was decided to fit the device to the locomotive Lebanon, which at the time was undergoing repairs at the road"s Elizabeth Port, New Jersey, shops.^ Although the engine was less than 18 months old, her tires were badly worn and she oscillated at high speed. Early in June of that year a series of tests were held with the Lebanon. Moore said of these trials: ' 5 From a sworn statement of G. M. Milligan dated July 2, 1857. This along with letters, petitions, receipts, and other such material quoted in this discussion are from the Patent Office papers housed in the National Aichives, Washington, (hereafter referred to as Patent Office papers). * The Lebanon was a 4-4-0, used in freight service, that had been built by the New Jersey Locomotive and Machine Com- pany in December 1855. ' Letter dated July 2, 1857, from S. L. Moore (Patent Office papers). After the said invention of Bissell had been applied the engine was run out onto a curve which she turned apparently with nearly as much facility as she wo
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