Abstract: A coin testing device comprising two parts carrying coin sensor elements, the two parts being capable of relative movement apart from each other for access to the space between them. When the parts are closed, their relative positioning is defined by features at four positions. At three of those positions the features are such as to determine the spacing between the two parts and at two of those positions the features are such as to prevent relative translational and rotational movement of the two parts in their own plane. A loose hinging arrangement is provided so that only the features of those four positions, and not features of the lid, determine the relative position of the two closed parts.

Abstract: A coin guiding device comprises a surface disposed normally in use in the path of a coin, and inclined downwardly toward one side of the path to cause coins which have engaged the surface to tend to move toward that side. The surface is moveable under the weight of the coin in a direction out of the plane of the coin to permit the coin to pass, and is so arranged that the effective leverage caused by the coin increases as the coin moves toward the side of the path.