Countersinks and countersunk-headed rivets for hot riveted joints

摘要

318,736. Goebel, E. Aug. 24, 1928. Rivets. - The countersunk surface of a hot rivet is formed with one or more shoulders, each consisting of portions of the surfaces of cones with differing semivertical angles a. The hole in one of the plates to be secured together is similarly formed to receive these shoulders, thus preventing the slackening of the rivet by contraction during cooling.