GB327516A - Improvements in or relating to sealing the ends of vessels against internal fluid pressure - Google Patents

Abstract

327,516. Dunlop Rubber Co., Ltd., Willshaw, H., Gorham, W. G., Mills & Co. (Engineers), Ltd., J., and Ramsbottom, E. Feb. 19, 1929. Doors, lids, and covers.-A door for sealing the end of an annular container is pressed against two rings of packing material on the container by the engagement of spaced inclined surfaces on the door with corresponding parts on the container. The annular door 1, Fig. 1, has its inner periphery flanged at 2 or 2<a>, and is provided with spaced bearing surfaces 3, Figs. 1 and 3, which contact with complementary surfaces 4 on the peripheral members 5. 8 attached to the walls 6, 9 of the container and carrying packing rings 16, 10. The door 1 is supported by four arms 17, and the central boss 13 is adapted to receive a shaft by which the door is rotated. The door may also be rotated to close it by means of a segmental rack 11 and pinion 12. The door when released may be withdrawn axially, or swung on hinges. An additional locking member 21a may be provided, which lies between lugs 22 on one of the arms 17 to prevent rotation of the door. This locking member may be operated by a shaft 20 and chain pulley 21. To take up wear on the contacting surfaces, the members 5<a>, 8<a>, Fig. 5, are secured to the members 5, 8 by adjustable screws 23, 24 and holding bolts 27, 29. The door may have brackets 29 to support a cylinder 30 for vulcanizing lengths of strip or sheet material.