Automatic weighing apparatus and method
First Claim
1. An automatic weighing apparatus comprising;
- weighing means for weighing out articles having variable specific gravity, to obtain a batch thereof having a weight corresponding to a target weight value and which is within preset allowable limits of the target weight value;
shaping means for shaping said batch of articles into a fixed volume;
pressure sensing means for sensing the pressure which develops when the weighed out articles are shaped into the fixed-volume batch, and for providing a corresponding output; and
target weight value adjusting means responsive to said output from said pressure sensing means for adjusting means for adjusting said target weight value within the preset allowable limits, for subsequent operation of said weighing means, so as to render the volume of batches of weighed out articles substantially constant.
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Abstract
An apparatus for automatically weighing out articles of a type having an apparent specific gravity which is not constant includes means for weighing out the articles into a batch having a target weight, means for filling a constant volume with the weighed out batch of articles, a pressure sensor for sensing pressure that develops when the articles have been introduced into the constant volume, and means responsive to the pressure sensed by the pressure sensor for automatically adjusting the target weight value within preset allowable limits so that the weighed out batch of articles will have a fixed volume. The weighed out batch of articles introduced by the filling means are shaped into the fixed volume. The weight of the batch and the volume thereof within a package are both within preset allowable limits.
15 Citations
9 Claims
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1. An automatic weighing apparatus comprising;
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weighing means for weighing out articles having variable specific gravity, to obtain a batch thereof having a weight corresponding to a target weight value and which is within preset allowable limits of the target weight value; shaping means for shaping said batch of articles into a fixed volume; pressure sensing means for sensing the pressure which develops when the weighed out articles are shaped into the fixed-volume batch, and for providing a corresponding output; and target weight value adjusting means responsive to said output from said pressure sensing means for adjusting means for adjusting said target weight value within the preset allowable limits, for subsequent operation of said weighing means, so as to render the volume of batches of weighed out articles substantially constant. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method automatically weighing out articles of a type having a variable specific gravity, comprising the steps of:
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weighing out the articles to obtain a batch having a weight corresponding to a target weight value and which is within preset allowable limits of said target weight value; introducing the weighed out batch of articles into a vessel and shaping the batch of articles into a batch having a fixed volume; sensing the pressure that occurs when the articles are subject to said shaping; and adjusting the target weight value within the preset allowable limits, for subsequent weighing out of batches of said articles, on the basis of the sensed pressure, so as to render the volume of weighed out articles substantially constant. - View Dependent Claims (8, 9)
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Specification