Abstract: A hand portable riveter includes a handle pivoted to a casing to move a pull shaft through a transmission mechanism, causing it to set a rivet or rivnut via a riveter tip assembly, wherein the transmission mechanism consists of a pressure bar pivoted about a pivot in the middle and having a front fork stopped around a neck portion on the pull shaft and a rear fork, and a roller mounted on the rear fork by a pin; turning the handle in one direction causes the pressure bar to press the pull shaft downwards; turning the handle in the reversed direction causes the roller turned along the casing to give a pressure to the pressure bar in lifting the pull shaft.

Abstract: A button feed unit to guide a button element from a button supply to a button applicator and arrange the direction of surface pattern provided on a front face of the button element. The button feed unit is adaptable for a variety of buttons of different sizes by exchangeable components of a feed path for the button element. The feed path for the button element is provided with a button rotating attachment having a button element guide path of a wedge-shaped cross section to pinch a part of the periphery of the button head and to urge the button head resiliently toward a cooperating feed path guide member, wherein at least the attachment is exchangeable.