GB1119028A - An apparatus for conveying and weighing packages - Google Patents

Abstract

1,119,028. Weighing apparatus. CORLEYMILLER, Inc. April 19, 1967 [Aug. 3, 1966; Dec. 12, 1966], No. 17897/67. Heading G1W [Also in Division B8] Apparatus for conveying and weighing packages comprising intermittently drivable feed and transfer conveyers which are driven alternately and which convey packages in succession to a conveyer overlying a scale platform 13 is provided with a retractable stop member 36 which is arranged to block the path of travel of a package from the transfer conveyor to the scale conveyer when the feed conveyer is being driven and to free the path of travel when the transfer conveyer is being driven. The feed, transfer and scale conveyers may comprise a plurality of parallel rollers 35, 37 and 38, and 45 respectively which are rotatably mounted at their ends in side plates of the apparatus, the rollers of the feed and scale conveyers bearing on belts 76 and 122 respectively which are intermittently driven by a cam actuated drive chain arrangement 32, 70, 71 and by a cam controlled pivoted drive-wheel 134, the transfer conveyer defined by freely rotatable rollers 37 and 38 being engageable for drive purposes with a tiltably mounted drive belt 100 which is tiltable by a cam and follower arm arrangement 105,106. The scale conveyer which may be intermittently driven over the scale platform 13 in such a way that a package is stationarily supported by the scale conveyer for weighing purposes may, in an alternative embodiment be continuously driven in which case it is vertically positionable relative to the platform in such a way as to deposit a package on to a grid structure formed by upstanding parallel plates 29, (Fig. 12) on the platform for weighing purposes before being lifted by the scale conveyer and conveyed to a labelling location. In this alternative embodiment the scale conveyer may be pivotally mounted on a frame 221 which is vertically movable by a cam arrangement 230, 231. Some of the rollers forming the feed conveyer may be so mounted in a frame 202 (Fig. 12) which is rotatable by a cam arrangement that these rollers are lifted from their associated drive-belt when the drive is inoperative so as to freely rotate while the transfer conveyer is being driven. The cams of the various cam arrangements may be driven by a common motor through a gear unit and the various cam followers associated with the cams may be spring-biased into engagement with the cams. A package detector (40) Fig. 3 (not shown) which may be in the form of a tiltable plate arranged adjacent the transfer conveyer and which may be arranged to prevent operation of the scale conveyer if no package is present on the detector may be positioned adjacent the stop member 36 which is vertically movable also by a cam arrangement (94,95) Fig. 3 (not shown).