| 摘要 |
<p>A coin testing device comprising two parts (2, 4) which in an operating, closed, condition of the device define between them a narrow space (6) in which coins travel edgewise, and one or more coin sensor elements (12, 12', 14, 14', 16, 16') mounted on at least one of the parts, the two parts being capable of relative movement apart from each other for access to the space between them, characterised in that the two parts are provided with location-defining features (20, 20', 22, 22', 24, 24') at three positions which are spaced apart to form a triangle, that when the two parts are being brought together from their apart position they are sufficiently displaceable relative to each other to be able to adopt final closed positions determined only by contact between the location-defining features, and that means (28, 56) is provided for urging the parts towards each other at a position within said triangle. Accurate location of the two parts relative to each other is achieved despite manufacturing tolerances.</p> |
