Usm Corporation

501 Usm Corporation

Michael J Moran

Tadeusz Kemnitz

Joseph B Lohr

James M Suttle

In a bagmaker, two pairs of opposed jaws to draw a web of material about a former and seal the web to form separate bags, each set of jaws are cantilevered on a support and have electromagnetic assist to provide pressure during sealing.

Jaws for a bag former

A product handling and weighing apparatus having a rotary paddle wheel with vanes forming product pockets therebetween to hold the product and transfer the product through a weighing bucket.

Product handling and weighing apparatus

An improved method of taking tare weights is provided for automatic weighing machines. Periodically, the sequence of weighing cycles is interrupted in order that a tare cycle may be executed. During the tare cycle, all the weighing buckets of the weighing machine which were emptied in the last weighing cycle are weighed in their empty state. The new values for the tare weights are stored and the old values are discarded. By introducing a tare cycle between successive weighing cycles, all weighing buckets are available in each weighing cycle for finding the best combination.

Method for taking tare weights in automatic combination weighing machines

A computerized scale in which each weighing bucket is formed by two side-by-side compartments and by a single door which shuttles back and forth between two positions beneath the compartments. Each time the door changes positions, it closes one compartment to permit product to be dropped into and weighed in such compartment and, at the same time, opens the other compartment to permit previously weighed product to fall therefrom. As a result, one compartment is filled as the other compartment is being emptied so as to significantly increase the cycle rate of the scale.

Weighing apparatus with compartmentalized weighing bucket

A weighing bucket receives product dumped from an overlying holding bucket and causes an underlying load cell to produce an electrical signal representative of the weight of the product in the weighing bucket. After being weighed, the product is swept out of the weighing bucket by a high volume blast of low pressure air produced by an air entraining nozzle. As a result of using air to empty the weighing bucket, the weighing bucket requires no doors or other moving parts and thus may be constructed with high stiffness and with a high natural frequency to reduce low frequency disturbances of the weight signal and to improve the accuracy of such signal as well as to reduce the time required for the weighing cycle.

Growing community of inventors

Raleigh, NC, United States of America

Michael J Moran