Corner post mount for weighing scale

In a platform-type scale comprising a base, a plurality of counterbalanced levers supported on the base, a weight-sensing mechanism operatively engaged with and responsive to movement of the levers, a cover mating with and shiftable vertically relative to said base, said cover depressing under an applied weight to pivot the levers, which, in turn, actuate the weight-sensing mechanism to indicate the magnitude of the applied weight, the improvement comprising a corner post mount associated with the base for supporting at least one of said levers for pivoting movement relative to the base, said corner post mount comprising:

• an upright member integrally molded with the base from a material that is incapable of defining a knife edge suitable for supporting said levers, said upright member defining a vertically extending opening;
• a metal insert having a body portion with flat, oppositely facing surfaces and defining an upwardly facing first knife edge, said insert positionable within said opening;
• an extension from said body portion and defining in conjunction with said body portion a downwardly facing opening which receives a wall of said upright member, said extension closely surrounding the wall of said upright member so as to confine movement of said insert relative to said upright member;
• and
• means associated with at least one of either said base or upright member engaging said oppositely facing surfaces of the insert and closely capturing said insert as to prohibit movement of said insert relative to said upright member transverse to the oppositely facing surfaces of the insert, said insert fit within said opening serving as a pivot for at least one said lever, said one lever having a second knife edge transversely disposed relative to and supported by said first knife edge for pivoting movement.

In a platform-type scale comprising a base, a plurality of counterbalanced levers supported on the base, a weight-sensing mechanism operatively engaged with and responsive to movement of the levers, a cover mating with and shiftable vertically relative to said base, said cover depressing under an applied weight to pivot the levers, which, in turn, actuate the weight-sensing mechanism to indicate the magnitude of the applied weight, the improvement comprising a corner post mount associated with the base for supporting at least one of said levers for pivoting movement relative to the base, said corner post mount comprising:

• a metal insert having a flat body with oppositely facing surfaces defining an upwardly facing first knife edge and having opposed, vertically directed edges converging toward the bottom of the body;
• an upright member molded integrally with said base from material that is incapable of defining a knife edge suitable for supporting said levers, said upright member defining a vertically extending opening to receive said insert;
• opposing sloped edges on said upright member, said sloped edges closely seating said converging edges of the body with the insert in a fully seated position as to confine relative movement of the insert and upright member in the plane of the insert and in other than the vertical direction;
• a pair of spaced, opposing edges associated with at least one of either the base or upright member and engaging said oppositely facing surfaces to prohibit relative movement of said insert and upright member transverse to the plane of the insert;
• and
• an extension from and in the plane of the body of said insert and defining in conjunction with the body a downwardly facing opening which closely receives an upwardly facing edge on a wall of said upright member, said insert introduced vertically within the upwardly facing opening and frictionally retained captive within said opening as to provide a rigid base for at least one said lever, said one lever having a second knife edge transversely arranged relative to and supported by said first knife edge such that said one lever can pivot about the corner post.