REPORT OF DRAFT GEAR TESTS

ISBN: 9780267881369 Géneros: TB Sinópsis: Excerpt from Report of Draft Gear Tests United State Railroad Administration Inspection and Test SectionWhen gears were tested under this requirement it was found that no useful information was obtained Gears of widely varying characteristics and excellence passed the prescribed test and it was soon appreciated that the specification requirement as well as this test were useless in obtaining draft gear informationWhen this absolute dearth of reliable knowledge on the subject was fully realized by the Committee on Standards and the Purchasing Committee they joined in requesting the Inspection and Test Section of the Division of Operation to conduct such a series of tests as would determine the mechanical value of each make and type of friction draft gear then regularly offered for sale to railroadsIn addition to the various tests which have been completed and which are given in the report the Section had definite plans made for train Operation tests and service tests Had the time been available and had circumstances permitted the Section would have completed these testsIt is much to be regretted that conditions on the railroads throughout the country during the war and immediately thereafter prevented the carrying out of these tests and this to a degree Operates to render the present work inconclusiveThe information covering the tests which have been made on new gears is definite and final To a limited degree tests were made on gears which had seen considerable service but the service tests themselves and the train operation tests were not made for the reasons givenIt is much to be hoped that arrangements will be made to complete the full series outlined by the Section and thereby render available accurate information concerning the action of gears in train operation and the ability of each type of gear to stand up in service With this added information mechanical officers and purchasing agents would be able