Abstract: A multiply extensible lifting frame is provided having a standing mast and one or more middle and inner masts slidable relative to one another, at least one lifting press cylinder connected with the standing mast having a piston connected to the intermediate mast, at least one chain connected at one end with the standing mast and at the other end with the inner mast and supported over a roller on the middle mast, a second lifting press connected with the inner mast and carrying a chain over a roller thereon, the chain connected at one end to the inner mast section and at the other end to the lift slide the improvement in which the at least one chain is carried in a plane parallel to the longitudinal median plane of the vehicle, at the at least one lifting press cylinder is in the same plane, and a lateral boom to which the at least one chain is fastened, is fastened at the lower end of each inner mast column.

Abstract: A multiply extensible lifting frame is provided having a standing mast and one or more middle and inner masts slidable relative to one another, at least one lifting press cylinder connected with the standing mast having a piston connected to the intermediate mast, at least one chain connected at one end with the standing mast and at the other end with the inner mast and supported over a roller on the middle mast, an additional hydraulically actuated element connected with the inner mast and carrying a chain over a roller thereon, the chain connected at one end to the inner mast section and at the other end to the lift slide the improvement in which hoses provided for supplying the additional hydraulically actuated element connected with the farthest extensible mast section are carried in the same plane and which the at least one chain connected with the standing mast and the farthest extensible mast and each hose is connected with a connection in one end, a bore hold on the side of the front flange of the col

Abstract: A load-lifting assembly for a fork-lift truck has a mast formed of three telescoping tubes, an inner tube secured to the support, an intermediate tube slidable on the inner tube, and an outer tube slidable on the intermediate tube and carrying a carriage on which the fork is mounted. A cable or chain has one end secured to the intermediate tube and is passed over a roller on the top end of the outer tube and secured to the carriage. The three-stage ram has a first member inside the inner tube and secured to the support, a second tubular member slidable on the first member and linked to the intermediate tube, and a third member slidable on the intermediate member and secured to the outer tube. The effective piston area of the third member is greater than that of the second member so that on pressurization of the interior of the ram the third member will move up relative to the first and second members before the second member moves up.