Weighing apparatus with automatic feed or discharge for weighing-out batches of material

GPHYSICS G01Measuring instruments G01GWEIGHING

G01G13/00Weighing apparatus with automatic feed or discharge for weighing-out batches of material

G01G13/003Details; specially adapted accessories G01G13/006Container supply or discharge mechanism G01G13/02Means for automatically loading weigh pans or other receptacles G01G13/022Material feeding devices G01G13/024by gravity G01G13/026by mechanical conveying means G01G13/028by pneumatic carrying means G01G13/04involving dribble-feed means controlled by the weighing mechanism to top up the receptacle to the target weight G01G13/06wherein the main feed is effected by gravity from a hopper or chute G01G13/08wherein the main feed is effected by mechanical conveying means G01G13/10wherein the main feed is effected by pneumatic conveying means G01G13/12Arrangements for compensating for material suspended at cut-off G01G13/14Arrangements for determination of, or compensation for, the tare weight of an unloaded container G01G13/16Means for automatically discharging weigh receptacles under control of the weighing mechanism G01G13/18by valves or flaps in the container bottom G01G13/20by screw conveyors in the weigh receptacle G01G13/22by tilting or rotating the weigh receptacle G01G13/24Weighing mechanism control arrangements for automatic feed or discharge G01G13/241Bulk-final weighing apparatus G01G13/242Twin weighing apparatus; weighing apparatus using single load carrier and a plurality of weigh pans coupled alternately with the load carrier; weighing apparatus with two or more alternatively used weighing devices G01G13/243using a single load carrier G01G13/244with a single weighing receptacle divided into two or more alternatively used sections G01G13/245the weighing receptacles being rockable or oscillating G01G13/246the weighing apparatus being rotatable G01G13/247Checking quantity of material in the feeding arrangement G01G13/248Continuous control of flow of material G01G13/26involving fluid-pressure systems G01G13/28involving variation of an electrical variable which is used to control loading or discharge of the receptacle G01G13/285involving comparison with a reference value G01G13/2851for controlling automatic loading of weigh pans or other receptacles G01G13/2852involving dribble-feed means controlled by the weighing mechanism to top up the receptacle to the target weight G01G13/2853wherein the main feed is effected by gravity from a hopper or chute G01G13/2855wherein the main feed is effected by mechanical conveyingmeans G01G13/2856wherein the main feed is effected by pneumatic conveying means G01G13/2857Arrangements for compensating for material suspended at cut-off G01G13/2858Arrangements for the determination of, or compensation for, the tare weight of an unloaded container G01G13/29involving digital counting G01G13/2906for controlling automatic loading of weigh-pans or other receptacles G01G13/2912involving dribble-feed means controlled by the weighing mechanism to top up the receptacle to the target weight G01G13/2918wherein the main feed is effected by gravity from a hopper or chute G01G13/2925wherein the main feed is effected by mechanical means G01G13/2931wherein the main feed is effected by pneumatic conveying means G01G13/2937Arrangements for compensating for material suspended at cut-off G01G13/2943Arrangements for determination of, or compensation for, the tare weight of an unloaded container G01G13/295for controlling automatic loading of the receptacle G01G13/2951involving dribble-feed means controlled by the weighing mechanism to top up the receptacle to the target weight G01G13/2952wherein the main feed is effected by gravity from a hopper or chute G01G13/2954wherein the main feed is effected by mechanical conveying means G01G13/2955wherein the main feed is effected by pneumatic conveying means G01G13/2957Arrangements for compensating for material suspended at cut-off G01G13/2958Arrangements for the determination of, or compensation for, the tare weight of an unloaded container G01G13/30involving limit switches or position-sensing switches G01G13/32involving photoelectric devices G01G13/34involving mechanical linkage motivated by weighing mechanism