. Official proceedings . , the smooth wheels, although itmust he said that Trevithick was of the o]Mni(jn that the wheelsoutside surfaces should be roughened with bolt heads and other. Fig. 2—Blenkinsops locomotive of 1812. protuberances to make them hold the rail. There were other loco-motives after Trevithicks with more or less smooth wheels, butsome designers thought that a cog wheel and a rack were neededfor proper traction, for instance, Blenkinsop (Fig. 2). In orderto find out whether sufficient adhesion can be obtained with asmooth external surface of the wheels, Hedle}- in 1813 made at
. Official proceedings . , the smooth wheels, although itmust he said that Trevithick was of the o]Mni(jn that the wheelsoutside surfaces should be roughened with bolt heads and other. Fig. 2—Blenkinsops locomotive of 1812. protuberances to make them hold the rail. There were other loco-motives after Trevithicks with more or less smooth wheels, butsome designers thought that a cog wheel and a rack were neededfor proper traction, for instance, Blenkinsop (Fig. 2). In orderto find out whether sufficient adhesion can be obtained with asmooth external surface of the wheels, Hedle}- in 1813 made atest on a i)latform on wheels loaded with bars. The wheels weredriven by two men on the platform working on cranks connectedby gears to the driving wheels. This was the first ever made at a problem pertaining to locomotives. Hedlevstated I ascertained the proportion between the weight of the 80 experimental carriage and the coal wagons at that point when thewheels of the carriage w^ould surge or turn around without advanc-ing it, and further he said, This experiment, which was on alarge scale, was decisive of the fact that the friction of the wheelsof an eng
Size: 1752px × 1426px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidofficialproc, bookyear1901
