Abstract: A plurality of catalyzer beds are arranged in series in a reactor jacket. Associated with each catalyzer bed is a plurality of distributor pipes for supplying a fresh catalyst and a plurality of draining pipes for draining off the used catalyst. In one embodiment, the reactor jacket is rotatable and the plurality of distributor pipes are connected to an upper edge of the catalyzer bed while the plurality of draining pipes are connected to a lower edge of the catalyzer bed so that when the reactor jacket is rotated to a position that tilts the catalyzer beds the used catalyst will drain off. In another embodiment, the lower surface of the catalyzer beds are formed of two pivotable plates which pivot downwardly and away from each other to allow for the draining of the used catalyst.

Abstract: A hydraulic system for opening and closing hopper barge comprises at least one and preferably two fluid pressure cylinders which are adapted to be positioned on one of the barge parts and a piston which is slidable in the cylinder which is adapted to be connected through its piston rod to the other barge part. The cylinder is connected by a first conduit at its piston rod end and by a second conduit at the opposite end, and a pump and a return line are connected to the respective first and second conduits. A pilot valve is located in the first and second conduits and includes three separate positions. In one position a pump discharge is connected to one end of the cylinder and the other end is connected to the return, and in another position, the opposite is true. In a third position, the first conduit is connected to a check valve and the pump discharge is connected to a return line in order to short circuit the pump.

Abstract: A hopper barge bottom seal construction comprises a barge having a first and second pivotal part which extend longitudinally and are oriented with their lower ends extending obliquely together but spaced apart at their lower ends. A seal is provided below the lower ends of the parts for sealing the space therebetween and it comprises a first support which is positioned below the first pivotal part as a first top generally horizontal member engaged below the first part and secured to the bottom end thereof. A second support has a second top substantially horizontal member alongside the first top horizontal member and it is secured to the second pivotal part and both supports are movable inwardly toward each other and outwardly in an opposite direction during assembly. The first support has a lower support plate which extends below the second support and an elastic seal body in the form of a hollow tubular member is disposed between the bottom of the second support and the top of the lower support plate.