Low range automatic weighing device

A weighing device comprising:

• a frame;
• a pan element for supporting a load to be weighed;
• means connected to said pan for retaining a plurality of weight elements in a vertically movable manner;
• a motor supported within said frame;
• a shaft member operatively connected to and extending from said motor and supporting said pan element;
• a plurality of support members each having top end portions adapted to receive and lift one of said weight elements;
• first and second camming arms, each secured to said shaft member and each extending in a direction toward said support members;
• and
• switching means for energizing said motor when said pan is depressed by a weighted load said motor turning said shaft member and guiding said first and second camming arms alternately into contact with successive support members in a step-by-step manner to alternately raise said weight elements diametrically across from each other and thereby lift a corresponding number of said weights substantially equal to the weight of said load.

A weighing device comprising:

• a frame;
• a pan element for supporting a load to be weighed;
• means connected to said pan for retaining a plurality of weight elements in a vertically movable manner;
• a motor supported within said frame;
• a shaft member operatively connected to and extending from said motor and supporting said pan element;
• a plurality of collapsible support members;
• each of said support members secured at one end thereof to said frame and each having top end portions adapted to receive and lift one of said weight elements when said member is in an extended and non-collapsed position;
• first and second camming arms, each secured to said shaft member and each extending in a direction toward said support members;
• and
• switching means for energizing said motor when said pan is depressed by a weighted load said motor turning said shaft member and guiding said first and second camming arms alternately into contact with successive collapsed support members in a step-by-step manner to place a number of said support members in a non-collapsed position to alternately raise said weight elements diametrically across from each other and thereby lift a corresponding number of said weights substantially equal to the weight of said load.