. India rubber world. th the three mills operating light,the clutch and brake circuits being opened simultaneously, andan 18-pound weight being used on the brake lever. Under theseconditions the travel of the drive roll was inches. Duringthis test it was noted that the brake applied considerably in ad-vance of the releasing of the clutch. The weight on the brake lever was next changed from 18 to31 pounds, and two tests were made with this weight on thelever—one with the mills operating light, and the other withone mill loaded. Under the first condition the travel of the front roll before
. India rubber world. th the three mills operating light,the clutch and brake circuits being opened simultaneously, andan 18-pound weight being used on the brake lever. Under theseconditions the travel of the drive roll was inches. Duringthis test it was noted that the brake applied considerably in ad-vance of the releasing of the clutch. The weight on the brake lever was next changed from 18 to31 pounds, and two tests were made with this weight on thelever—one with the mills operating light, and the other withone mill loaded. Under the first condition the travel of the front roll before stopping was inches, and with one millloaded the travel was inches. On both of these tests itwas noted that the brake applied considerably in advance of therelease of the magnetic clutch, and in one case the mills werepractically at rest before the clutch fully released. It was, there-fore, determined to accelerate the releasing of the clutch byarranging to reverse the dircciion of current flow in its wind-. Showing Inst.\\tion of Clutch .\xd ing, a preventive resistance being included in the circuit, whichwas of such value as to prevent the re-engagement of the clutchafter release. Two tests were made with the reverse switch in-stalled, the first of which was made with 18 pounds on thebrake lever and one mill loaded, under which conditions thetravel was 4 inches; the second with 31 pounds on the brakelever and one mill loaded, under which conditions the distancetraveled after operation of the safety switch was only 2 inches. As a result of these tests it was determined to install a re-verse switch and to leave the equipment with the 18-poundweight on the brake arm. Under these conditions, as alreadynoted, the travel of the roll periphery, after operation of thesafety switch, will be 4 inches with one mill loaded, and lessthan 4 inches in case more than one mill is loaded. It wasnot deemed advisable to install the 31-pound weight perma-nently, o
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