Shaft 1 with test-piece 2 rotates in bearings a. Lever 4 turns about fixed axis A and carries weights G₁ and G₂. Link 5 is connected by turning pairs B and C to links 4 and 3. Two-armed lever 3 is hinged to loading devices b. Acting on loading devices b, weights G₁ and G₂ produce a bending moment. Upon rotation of shaft 1, test-piece 2 is subjected to the simultaneous action of bending and torsion. Generator d of mass m serves to measure the magnitude of the transmitted torque.
$816$LW,M$