Endurbætur á eða í sambandi við dreifara fyrir fljótandi efni

1,156,864. Fertilizer distributer. PORTER ENG. CO. Ltd. and IVISON & DIXON. 5 Jan., 1968 [27 Jan., 1967], No. 4069/67. Heading A1D. A spreader for fluent materials consists of a container 20 with a screw conveyer 21, the shaft 22 of which extends through the casing either end of the container. At one end, the shaft is connectible to a power supply, at the other it is connected to the distributing means 23 which consists of a short pipe 24 extending through the wall of the container and a drum 25 rotatably mounted on the pipe and fixed to the shaft 22 externally of the container. The drum is provided with three outlet ducts 26 curved as shown such that their ends are substantially parallel to the axis of the shaft, each duct being closed by a hinged door 27. Each door is maintained closed by a spring 31 and is caused to open, when the drum rotates, by centrifugal force acting on counterweight 30 at the free end of lever 29. Tension in the spring is adjustable by having one end removably fixed in one end of a chain 32, the three chains being joined together at the other end. The container is mounted on a chassis with wheels 11 and is provided with a towbar 13 of adjustable length.