Patent ID: 8365864
Filing Date: 2013-02-05
Classification: E04G

Abstract:
1. A working seat for safe and secure temporary support of a construction worker by providing secure temporary attachment to a flange of an at least temporarily erected structural beam including but not limited to structural beams formed by a rolling operation comprising: (a) an elongated supporting and leverage arm adapted to be clamped to a structural beam so as to extend generally transversely of said beam to support a construction worker in a working position transversely of said beam and having established first and second ends the first of which is adapted for attachment by clamping to the beam and the second of which is adapted to support a structured worker; (b) a first plate secured by welding to the elongated supporting and leverage arm at a first end of the said elongated supporting and leverage arm and adapted for temporary intimate frictional contact with the lower surface of a beam flange; (c) a second plate secured by welding to the elongated supporting and leverage arm at a second end of the arm removed from the first end said second plate being adapted to serve as a temporary working seat for a construction worker; (d) an adjustable clamping means adjacent the first end of the first plate, the clamping surface of which adjustable clamping means is secured by welding to the elongated supporting and leverage arm and is restricted in size when compared to the surface area of the first plate and adjustable in clamp spacing with respect to the first plate which serves as a friction plate and is adapted to clamp the first plate and working seat structure as well as the intermediate supporting and leverage arm as a whole to a flange of a structural beam, and wherein the relative size of first plate and the position of the clamping means with respect to the first plate and the beam flange is effective to convert weight force applied to the second plate into leveraged pressure of the first plate against the lower surface of the beam flange compensating against any tendency for the seat to slip from its temporary attachment to the beam flange in proportion to the weight of a construction worker making use of the seat as a working seat; (e) a foot support attached to the elongated supporting and leverage arm extending downwardly from the side opposite which the first and second plates are secured and spaced further from the second plate than the first plate.