J-JOHNSON

BATCHING PLANTS FOR MEASURING OUT THE CONSTITUENTS FOR BATCHES OF CONCRETE, CEMENT BATCHING PLANTS FOR MEASURING OUT BATCHES OF CEMENT, AGGREGATE BATCHING PLANTS FOR MEASURING OUT BATCHES OF AGGREGATES SUCH AS SAND AND GRAVEL, SCALES, WEIGH BATCHES EMBODYING WEIGH HOPPERS AND SCALES FOR WEIGHING SAID HOPPERS AND THEIR CONTENTS, AUTOMATIC BATCHING AND RECORDING UNITS ADAPTED TO BE INSTALLED IN BATCHING PLANTS TO CONTROL AND MAKE RECORDS OF THE OPERATION THEREOF, AND MOISTURE COMPENSATING DEVICES ADAPTED TO BE INSTALLED IN SCALE SYSTEMS OF BATCHING PLANTS FOR AUTOMATICALLY ALLOWING FOR THE MOISTURE CONTENT OF ONE OR MORE OF THE AGGREGATE CONSTITUENTS OF CONCRETE BATCHES IN WEIGHING OUT THE WATER FOR SAID BATCHES