Coleman, William Francis, Rugg, Daniel Maltby · leaf 22
thesheaves on the top of this machine the original head was removed 1and a new one made of 15 inch channels (C.C.) substituted. A .piece of 4 inch shafting (S) milled at the ends to give a bearing surface of about 5 square inches, was seated on the top of thechannels. This shaft carried at… … bent around the sheave. Readings from hoth were taken from agraduated dial on which a pointer revolved. The motion of thepointer was due directly to the elongation of the rope,hut forconvenience the elongation shovm by the pointer v/as twice theactual amount, as the elongation measured was only…
