Hand riveter

A hand riveter the main body of which has a fixed handlebar, a movable handlebar pivotally movable relative to the fixed handlebar, and a chuck for gripping a headed mandrel inserted through a rivet sleeve, the chuck being movable by the pivotal movement of the movable handlebar to pull and snap the mandrel off its head and thereby deform the rivet sleeve for setting the rivet, the hand riveter being characterized in that the riveter comprises an operating bar pivotably supported by the riveter main body and having one end pivoted to the chuck and the other end serving as an engaging portion, a pusher pivoted to the movable handlebar and having a series of grooved portions engageable with the engaging portion, and a bearing member pivoted to the riveter main body and formed with bearing grooves positioned alongside the grooved portions in corresponding relation thereto and engageable with the engaging portion, whereby when the movable handlebar is repeatedly turned, the pusher pushes the engaging portion in engagement with one grooved portion after another to engage the engaging portion correspondingly in one bearing groove after another and move the chuck by the resulting movement of the operating bar for setting the rivet.