Scale tester

Claim 2

Apparatus for testing a scale of the type which includes a platform and a weight indicating means connected to said platform which is responsive to a weight supported by said platform, said testing apparatus comprising: a. a first support means having means thereon connecting the same to said platform so as to be supported by said platform; b. a calibrated weight supported by said first support means in a testing position; c. a base; d. a second support means mounted on said base; and e. means selectively moving said second support means into and out of supporting engagement with said calibrated weight selectively to move said calibrated weight into and out of supported relation with said first support means whereby when said calibrated weight is supported by said first support means and thereby said platform, said weight indicating means are responsive to said calibrated weight.

Claim 3

An apparatus as claimed in claim 1 wherein said first support means comprise a plurality of hangers connected to said platform and depending therefrom.

Claim 4

An apparatus as claimed in claim 1 wherein said calibrated weight comprises an elongated bar and at least one weight member connected to said bar intermediate the respective opposite ends thereof and for movement therewith, the respective opposite ends of said bar being engageable with said first support means and said second support means.

Claim 5

An apparatus as claimed in claim 1 wherein said base comprises a frame disposed beneath said platform independently thereof, said second support means being connected to said frame for movement with respect thereto.

Claim 6

An apparatus as claimed in claim 4 wherein said second support means comprise a plurality of levers pivotally connected to said frame and means interconnecting said levers for simultaneous movement thereof.

Claim 7

Apparatus for testing a scale of the type which includes a platform and weight indicating means connected to said platform which is responsive to a weight supported by said platform, said testing apparatus comprising: a. first support means having means thereon connecting the same to said platform; b. a calibrated weight supported by said first support means in a testing position; c. a base comprising a frame disposed beneath said platform independently thereof; d. a second support means comprising a plurality of levers pivotally connected to said frame and means interconnecting said levers for simultaneous movement thereof; and e. at least one jack screw journalled to said frame and threadably interconnected with at least one of said levers for selectively moving said levers into and out of supporting engagement with said calibrated weight selectively to move said calibrated weight into and out of supported relation with said first suppoRt means.

Claim 8

Apparatus for testing a scale of the type which includes a platform and weight indicating means connected to said platform which is responsive to a weight supported by said platform, said testing apparatus comprising: a. first support means having means thereon connecting the same to said platform; b. a calibrated weight supported by said first support means in a testing position; c. a base comprising a frame disposed beneath said platform independently thereof; d. a second support means comprising a plurality of levers pivotally connected to said frame and means interconnecting said levers for simultaneous movement thereof; and e. at least one jack screw journalled to said frame and threadably interconnected with at least one of said levers for selectively moving said levers into and out of supporting engagement with said calibrated weight selectively to move said calibrated weight into and out of supported relation with said first suppoRt means.

Claim 9

An apparatus as claimed in claim 6 wherein said first support means comprise a plurality of hangers mounted on said platform and depending therefrom, each said hanger being adjustably mounted on said platform to permit selective adjustment of said testing position.

Claim 10

An apparatus as claimed in claim 6 wherein said means for moving said second support means further comprise a reversible electric motor connected to said at least one jack screw in driving relationship therewith.

Claim 11

An apparatus as claimed in claim 8 and including two electric circuits selectively and alternatively actuating said reversible electric motor for movement thereof in opposite directions, two limit switches, each interposed in a respective one of said electric circuits, each said limit switch opening the respective one of said electric circuits in response to engagement with said limit switch of one of said levers when said one of said levers is in a respective one of two limiting positions.