SEMI-AUTOMATIC GUN MOUNT

A semi-automatic gun mount allowing an operator to fasten together respective members to form a plurality of lineally spaced joints, characterized by at least one rail, referred to as a monorail, disposed adjacent the location where the lineally spaced joints will be formed; a carriage guidably supported on the monorail with minimal lateral extension; a first means, such as spaced apart wheels gripping the monorail and a vertically disposed rail, for facilitating movement of the carriage longitudinally of the monorail with minimal friction, for retaining the carriage on the monorail with sufficient force to carry a cantilevered gun and for facilitating removal and installation of the carriage and its gun from and onto the monorail; vertically movable support plate on the carriage for supporting the gun; stop for limiting vertical movement of the support plate; and adjustable biasing means yieldingly urging the support plate upwardly into its uppermost position in engagement with the stop. The support plate is movable downwardly by an operator against the force of the adjustable biasing means to position the gun in a plurality of vertically spaced nailing positions adjacent each joint. Also disclosed are specific preferred embodiments.