| 摘要 |
A device for dispensing a selectively variable measured quantity of granular material from a container includes a cap adapted to be secured to the open end of the container, the cap including a generally cup-like coffer disposed in the neck of the container. A disk-like lid is rotatably secured to the cap in coaxial fashion, and includes a discharge port subtending a small angle therein. The cap includes a boss projecting radially inwardly in the coffer and disposed directly adjacent to an inlet port in the inner end wall of the coffer. An adjustment member is rotatably received in the coffer, and includes a radially extending wall parallel to the axis which is selectively variably spaced from the boss to define a chamber of variable volume communicating with the inlet port. A disk-like bottom cover includes an inlet opening therein, and is secured to the inner end of the cap and adapted for rotation in concert with the lid. With the container in the inverted position, granular material therein will fall gravitally through the opening in the bottom cover and the inlet port in the cap to fill the chamber in the coffer thereof to the extent permitted by the position of the wall of the adjustment member. The lid is rotated so that the bottom cover occludes the inlet port, after which the discharge port in the lid comes into registration with the chamber. The contents of the chamber fall gravitally through the discharge port, and spring means return the lid and bottom cover to their original angular positions. |
