| 摘要 |
A mail piece weighing scale for use with automated mail processing apparatus in which a plurality of mail processing components are disposed along a feed path for processing mail pieces moving seriatim along the feed path. The weighing scale has a platform, the upper surface of which is aligned with and forms a segment of the feed path. A transport means for moving mail pieces across the scale platform is mounted on the platform so that the platform and the transport means form an integral unit which constitutes the tare weight of the scale when it is calibrated to register 0 weight. The transport means includes a pair of transport units mounted beneath the scale platform with drive elements thereof protruding through apertures in the platform so as to contact mail pieces disposed on the upper surface, and a resilient pressure means is mounted on the scale platform in overlying relationship to both of the transport units so as to press mail pieces into firm driving engagement with the drive elements of the transport means. The platform and transport means assembly is mounted on a load cell which in turn is mounted in a base frame, with the result that the transport means does not have to be retracted beneath the surface of the platform in order for the scale to weight mail pieces.
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