Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 98
reporting favorable results. One set of the bearings (taken indifferently from a lot) was usedon the Pennsylvania Central Rail-road for one hundred days, runningeighty miles per day (making aservice of eight thousand miles)and oiled every two weeks. Eachchamber holds but four fluid ouncesand at…
Science · Technology · Meteorology · Patents
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