| 摘要 |
An ash tray comprising an inner cup-shaped receptacle surrounded by an outer cup-shaped receptacle. Both receptacles have an upper smooth edge so that a cigarette can rest on the two edges; the upper edge of the inner receptacle is lower than that of the outer receptacle, so that a line tangent to the two edges is inclined to the horizontal at an angle lying between 10 DEG and 40 DEG . The distance from the upper edge of the inner receptacle to the opposite wall of the inner receptacle (as measured along an extension of the line tangent to both edges) is between one-eight and one-half the length of a cigarette, and the distance between the two edges on the same line of tangency is between one-half and full length of a cigarette minus the distance from the upper edge of the inner receptacle to the opposite wall of the inner receptacle. The inner receptacle may be circular with a downwardly and inwardly sloping inner surface and a downwardly and outwardly inclined outer surface. The outer receptacle has a downwardly and inwardly sloping wall.
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