Maatschappij Van Berkel's Patent N.v.

Mathijs M Engels

Albert H Devoogd

Weighing apparatus for measuring loads and/or calculating the value of loads which includes a weighing device and an evaluating device. The weighing device is provided with a movement responding to the load being weighed and producing a corresponding electrical measurement signal, while the evaluating device translates the electrical measurement signal into a digital readout and also is capable of calculating the value of the load in accordance with a scheduled value for the load being weighed. An electrical cable connects the evaluating device with the weighing device for the purpose of transmitting electrical signals from the weighing device to the evaluating device. A data storage unit is permanently connected to the weighing device for storing constants that modify the output of the movement to compensate for errors inherent in the movement when it is manufactured. Additionally, the data storage device may contain constants for correcting the electrical signal going to the evaluating device in accordance with the environmental conditions in which the weighing apparatus is operated. The data storage unit is sealed and therefore tamperproof and may be located within the housing of the weighing device or in a coupling member attached to the electrical signal transmitting cable extending between the weighing device and the evaluating device, wherein the cable is permanently secured to the weighing device. The coupling member is structured to mate with a coupling member on the evaluating device whereby the weighing device may be used with any evaluating device and be capable of producing accurate weight measurements.

Weighing apparatus

A weighing apparatus having an evaluating device connected to the movement for determining the weight value of a load to be weighed from a series of continuously repeated weight measurements which includes a store or memory for the individual results of the weight measurements and a digital indicating device controlled thereby which shows that particular weight value from the measurement series, for which a certain minimum number of the latest consecutive individual results in the measurement series are the same.

A weighing apparatus for measuring loads having a movement with one or more vibrating strings where the mechanical elements of the movement are non-adjustable and further including an evaluating device with arithmetic logic units for introducing constants into the evaluating device that can be adjusted during initial calibration of the apparatus to remove errors inherent in the movement.

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Koudekerk aan den Rijn, Netherlands

Mathijs M Engels