. The locomotive engineer . lorun under water, and without oil. Among otherthings tried was a bearing of wood pulp hardenedin molds under great pressure. This gave encoura-ing results, and he experimented with it further,Anally mixing with it a small quantity of bearing blocks were found lo he hard and torun well, and were tried in other places, and underother conditions in the shop. The result has beensomething of more than passing Inlere^l. Graphite is known to be a wonderful lubricant,but has generally been used with oils or other made bearings with greater perc
. The locomotive engineer . lorun under water, and without oil. Among otherthings tried was a bearing of wood pulp hardenedin molds under great pressure. This gave encoura-ing results, and he experimented with it further,Anally mixing with it a small quantity of bearing blocks were found lo he hard and torun well, and were tried in other places, and underother conditions in the shop. The result has beensomething of more than passing Inlere^l. Graphite is known to be a wonderful lubricant,but has generally been used with oils or other made bearings with greater percentages ofgraphite, using the wood pulp for strength, andsoon found that no lubricant was needed at put bearings made of this material to work Invarious places, wilh no means of oiling, and hadno trouble with them. Some Philadelphia capital-ists becoming inlerested, they employed J. H,Cooper, an old and well-known mechanic, formerlysuperintendent of the Southwark Foundry andMachine Company, lo investigate the ^ vented of lale, one of the most ingenious and sim-ple of which is illuslraled herewjib. II is the in-vention of Mr. Alfred P. Wapi. an employe of the(olorado Midland road, at Colorado City, Colo. As will be seen by the engraving, he employsa short shaft or spool, and a ratchet wheel, to Uikeup the slack of the brake chain. One lever, G. is pivoted loosely to Ihe pLston ofthe brake, and carries the pawl Af; the other endis pivoted to the frame of the car by a bracket brake chain passes over a roller ut L on thetioatiug lever, and to a permanent connection onthe shaft. There i$ another pawl on the pistonbead F. thai server to hold the ratchet from movingbackward at all. Wlion the brake is applied the Inner end of thelever O is carried ahead, and if there is an inch toomuch travel the pawl if drops Into another notch,and revolves the ratchet just that much, giving thepawl fa new ■■bite Thus it will be seen thatthis simple device will lake care of t
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1888
