image/svg+xmlOpenclipartthe trip hammer drops on the crankshaft2008-03-04T21:10:02Wide Road Ahead! The Building of an Automobile by Henry B. Lent New York THE MACMILLAN COMPANY 1934 archive.org states as PDhttps://openclipart.org/detail/15455/the-trip-hammer-drops-on-the-crankshaft-by-johnny_automaticjohnny_automaticcarequipmentexternalsourcefactorymachinemanufacturetool