Automatic check weigher
First Claim
1. An automatic weighing machine capable of weighing an object as it passes through said machine, "on-the-fly," and checking that weight against a predetermined weight value entered thereon, comprises:
- a transducing means for providing an electric circuit characteristic as a function of bearing weight;
means associated with said transducing means for feeding said object onto said transducing means;
discharge means associated with said transducing means for carrying said object away from said transducing means;
means connected with said transducing means for transferring said object across said transducing means; and
electric circuit means connected to said transducing means for providing electric power thereto, for continuously monitoring said transducing means electrical circuit characteristic whereby from said monitored characteristic said electric circuit means determines when said object is fully bearing on said transducing means, while being transferred across thereof, and determines the average weight of said object as a function of said continuous monitored characteristic.
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Accused Products
Abstract
A high speed weighing machine, for determining the weight of a package "on-the-fly", with respect to a predetermined weight range, as the package travels across a weigh cell weighing platter, incorporates apparatus for interpreting multiple samplings of the weight bearing on the weighing platter for determining the interval during which the package is fully on this weighing platter and for calculating the average weight registered by the weighing platter during that interval wherein three periods are defined for each weighing operation.
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Citations
15 Claims
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1. An automatic weighing machine capable of weighing an object as it passes through said machine, "on-the-fly," and checking that weight against a predetermined weight value entered thereon, comprises:
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a transducing means for providing an electric circuit characteristic as a function of bearing weight; means associated with said transducing means for feeding said object onto said transducing means; discharge means associated with said transducing means for carrying said object away from said transducing means; means connected with said transducing means for transferring said object across said transducing means; and electric circuit means connected to said transducing means for providing electric power thereto, for continuously monitoring said transducing means electrical circuit characteristic whereby from said monitored characteristic said electric circuit means determines when said object is fully bearing on said transducing means, while being transferred across thereof, and determines the average weight of said object as a function of said continuous monitored characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A process for automatically checking the weight of a package against a predetermined desired weight including the steps of:
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loading said package onto a weight detecting transducing medium; transferring said package across said weight detecting transducing medium; continuously electrically powering said weight detecting transducing medium; successively sampling said electrical output from said weight detecting trandsducing medium; establishing a predetermined threshold range; determining when said successive output samples are increasing in increments greater than said predetermined range and when they are decreasing in increments greater than said predetermined range; determining a storage sampling period when said successive output samples are within said predetermined range and not within a quiescent state range and said transferring step is in progress; storing successive output samples obtained during said storage sampling period; calculating the average of said stored samples at the end of said sampling period which calculating is initiated upon the determination of said successive samples decreasing in increments greater than said predetermined values; and transferring any said calculated average into a display of weight. - View Dependent Claims (14, 15)
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Specification