| 摘要 |
A torque wrench capable of pre-setting specified torque values is disclosed which comprises an elongated housing and an output drive shaft. Pivotally secured to and located within the housing are a plurality of levers. A first lever is journalled to the output shaft for rotation therewith and the remaining levers are pivotally secured to the housing adjacent their first ends at spaced intervals along the longitudinal center line of the housing and, with the exception of the last of these levers, have second ends which engage the first end of the next, adjacent lever whereby pivoting of the first lever results in pivoting of each of the levers through their interconnections. Further included is a torque value setting assembly which acts between the housing and at least one of the levers to apply a force to the lever which must be overcome in order for that lever to pivot. The torque value setting assembly is readily adjustable to alter the pivoting resistance by varying the position along the length of the lever upon which the device acts. The torque wrench includes an indicating arrangement which provides an audible indication when the torque value set by the torque value setting assembly has been reached.
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