Crank wound tensometer for perforated paper strip - uses tensile force measuring sheet spring and dial gauges

摘要

The device the tensile strength and extension of a perforated paper strip. The strip is placed on the table (19) and held by clamps to the movable and fixed tensioning elements (3, 2). The crank (34) is wound and the push rod (36) deforms the sheet spring (26) and through the movable tensioning element, pulls the strip. The sheet spring deformation is a measure of the tensile force. The strip extension and the tensile force are recorded by dial gauges (6, 5). The dial gauge reading at strip rupture indicates the tensile strength.