GB523212A - Improved means for delivering granulous material from hoppers and the like - Google Patents

Abstract

523,212. Delivering material from hoppers. NICOLAS, J. H., and GOUSSEAU, F. X. A. E. L. Dec. 28, 1938, No. 37672. Convention date, Dec. 29, 1937. [Class 78 (i)] A number of orifices 15, Fig. 5, in the bottom of a main hopper are opened and closed by the sliding movement of obturator plates 23 which are mounted on a common wheeled carriage movable between stops 30, 31 by an anchor member 44 operated by a pivoted bridge 39, carrying the delivery hopper 32 trunnioned at 35a out of line with the bridge pivots 40. When the hopper 32 fills faster than it can discharge through the holes 54 in the outlet pipe, the weight eventually tips the beam into the position shown in Fig. 5 against the action of the springs 48a, 49a and so causes the fluke 45a of the anchor to close the orifices 15. After the initial tilt a ball 42 rolls to the lower end of the bridge to increase the preponderance of weight and effect a quick action of the carriage. As the hopper 32 continues to discharge after the orifices 15 are closed, the springs 48a, 49a and the counterweight 57 eventually restore the bridge to a position beyond the horizontal, and the ball then rolls to the other end to complete the movement and re-open the orifices. In a modification, the anchor member is replaced by flexible connections between each end of the bridge and the carriage. Details in the construction of the hoppers: The hopper 32 is fitted with rollers 55 so that it can slide on the outlet pipe 33 and is also fitted with brush sealing- means 56. The main hopper is faced with tongued and grooved boards 1, Fig. 1, nailed to posts 2 supported in channel-irons 3. These channel-irons are bolted to a lower framework comprising wooden beams encased in channelirons and carrying feet 6. The orifices 15 are formed at the base of inverted pyramidal recesses formed by cross-girders p of angle-iron flanged by inclined metal sheet 12, 12a and by wooden filling-pieces 14 at right angles to the cross girders. The obturators are spaced from the openings 15 by an amount greater than the size of the largest material handled (for example, wheat) so that they cannot crush any material in closing. They are also formed with slightly up-turned edges to prevent delivery of material when they are in the closed position.