Show Patents on Trolley Device Granted Patent rights for mechanical and and- electrical overhead trolley switching switching devices have been granted Jed I- I F. F Woolley Jr chief engineer of the Utah Light and Traction company and L. L J. J Long foreman in the way and structures department by the United States patent bureau the men were Manufacture and sale of the devices devices de de- vices has been taken over by the Ohio Brass company of Mansfield Ohio The devices are essential m in operating trolley coaches and arc used in practically all cities where trolley coaches are in use The idea was vas when coaches were first placed in operation here |