Abstract: A rip-rap laying machine designed to lay approximately 270 tons of rip-rap per hour resembles a huge steel bridge frame. The self-propelled unit overlies an acutely angled bank of a waterway, channel, or canal and moves along the bank (40) to lay rip-rap uniformly. The machine uses two cable-controlled hoppers (34 and 36) mounted on rails (20 and 22). An operator rides with the feeder hopper (36) and controls a loading hopper (34) to run between a dump hopper (32) on one end of the bridge and the feeder hopper (36). The loading hopper (34) transfers rip-rap from a dump hopper (32) to the feeder hopper (36). The rip-rap is transferred from the feeder hopper (36) to a vibratory feeder (38), which vibrates the rip-rap onto deflector plate (44) before rolling gently onto sheets of filter cloth placed upon the bank (40). Uniform placement of the rip-rap on the bank (40) occurs as the vibratory feeder (38) travels from the bottom to the top of the bridge.

Abstract: A controlled-discharge door assembly for particulate material or liquids includes a door member with a curved surface engaged by a large diameter roller mounted to a pivotable lever. The roller diameter is large in comparison to the length of the lever arm and provides variable torque multiplication as the roller moves along the curved surface of the door so that greater force is applied against the door when it is nearly closed. Resilient seals are provided around the door opening, the seal compressed by the discharge doors during closing to prevent leakage. The lever is moved over-center to hold the door in a locked position.

Abstract: A car repair station is disclosed having sequential way stations along a continuous track for the assemblyline repair of railroad cars, preferably of the Hopper type. The car passes into and under paired gantries at a second way station. These paired gantries are positioned at each end of the car and include a vertically moveable, horizontal lifting beam which moves up and down the gantry. The lifting beams have protruding therefrom a bell crank. When the bell cranks fasten to the coupler pockets and additional fastening is made to other portions of the car body the car is lifted by raising of the lifting beams and rotated about a longitudinal axis which is substantially coincident with its center of gravity. The car trucks are wheeled away through a turntable system, and the car is rotated on its side and lowered to two platforms with the gantry cranes, horizontal lifting beam, and bell cranks releasing the car.