Patent GB-772184-A (GB)
Title: Improvements in discharge mechanisms for liquid containers
IPC: B65D47/20
Filed: 1954-07-26
Abstract: 772,184. Stoppers. SCHLICKSUPP, T. F. July 26, 1954 [July 27, 1953 ; July 19, 1954], No. 21748/54. Class 125(3). [Also in Groups XXVIII and XXIX] A discharge mechanism for liquid containers comprises a spout member 2 tiltable with respect to a body part 1 adapted to be fixed to the container, a post 5 fixed at its inner end to the body part 1 and projecting into an axial passage in the spout member so as to leave a space between the post and spout members and a valve member 6 adjacent the end of the post closing a discharge aperture 3 adjacent the end of the spout member when the spout and post members are in co-axial relation, the discharge aperture being opened to permit the contents of the container to be emitted when the spout member is tilted away from the co-axial position against the action of resilient means tending to hold the valve closed. In Fig. 1, the spout has an enlarged base part 8 with a part spherical surface co-operating with an inturned part 10 of the body part 1 to form a ball joint connection. The post 5 is formed integrally with an apertured plate 15 secured within the body part 1 by a sleeve 25 which is screwed to the neck of the container 7. The ball joint connection is sealed against the contents of the container by a diaphragm 17 clamped at its outer periphery between a shoulder on the body part and a flange 19 on the plate 15. The diaphragm is clamped to the spout member by a flanged sleeve 20. The post 5 has an axial passage 23 with a counterbore containing a spring 22 which presses a ball 6 against a seat surrounding the discharge aperture 3. When the spout 2 is tilted, the conical internal surface 29 acts camwise on the ball and the aperture 3 is displaced relative to the ball. The ball re-seats itself automatically when pressure on the spout is released. In a modification, however, the part of the spout surrounding the aperture is plane and the ball retains the spout in its tilted position until the spout is moved positively to the co-axial position. In a further modification, the ball and the axial passage 23 are dispensed with and the spout is formed in two telescopically engaging parts the inner of which cooperates with a fixed valve member formed by the rounded outer end of the post member. In Fig. 7, the spout member 40 is formed of flexible and resilient material such as nylon or polyethylene or thin resilient metal. It comprises a body portion 44 fitted over a collar 46, a bellowslike part 41, and a head portion 45, an aperture 4b in which co-operates with the rounded end 6b of the fixed post 5b. The bellows formations 43 permit the spout to tilt and also move axially relative to the post. Passages 49 are formed in the base of the post 5b. In a further modification, the bellows-like part 41 is replaced by a straight cylindrical portion united to the body portion by a part having annular folds or convolutions. In a development of the lastmentioned modification, the post has an axial passage in which slides a spring pressed conical ended valve of substantially triangular crosssection. In Fig. 13, the spout member 40b has a lateral discharge aperture 59 near its upper end and is united to a body portion 44a by a small radial flange portion 64 with sufficient flexibility to permit the spout member to be pushed away from a fixed valve 58 against a spring 63 located in a cross-bore 61 in the head of a post 5e having an axial passage 59a. The spring 63 engages a head 60 on the valve engaging a thin vertical wall 62.