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4 is a wiring diagram showing the control circuit for the motor.

3 is a fragmentary sectional view showing the auxiliary poise and its carriage, the section being taken at line 3-3 of Fig. 2 is an enlarged fragmentary view of mechanism mounted in the dial head Fig. 1 is a rear elevational view of a dial scale with the back plates removed, showing the means of our invention mounted in the scale housings Fig. These and other improvements and advantages will be hereinafter described. When a load which is greater than the normal indicated scale capacity is placed on the weighing platform the means of our invention function automatically, in response to the abnormal loads, to change the so-called scale constants to enable the weighing mechanism to determine and indicate properly the weight of the abnormal load. H-owever, whereas heretofore the means provided for increasing the capacity of the scale were manually actuated and controlled, the means of the present invention, in fulfillment of the principal object of the present invention, are operated by an electric motor under fully automatic control. Thus, an auxiliary counterpoise of predetermined weight value, which normally is operatively disassociated from the weighing mechanism, is placed by mechanical means on the weigh beam to increase the counterbalancing force thereon, such means also functioning to modify the dial indicia in accordance with the changes made in the weighing mechanism.

scribed and illustrated herein for accomplishing the purpose aforesaid are similar in general nature to the means employed in patents referred to above. 2,014,275 granted to Alfred Bousfield, September 10, 1935. Scales equipped with means of this character are shown and described in U.

This invention relates to weighing scales and more particularly to improvements in means for changing the load counterbalancing components of the weighing mechanism of a dial scale and for effecting appropriate changes in its dial chart, whereby to adapt the scale to loads which are in excess of its normally indicated chart capacity.