DYNAMOGRAPH MECHANISM WITH AN ELASTIC DIAPHRAGM

Tensile force F, applied to the dynamograph by means of reversing shackles 1 and 2, designed as plates held together by bolts, is transmitted to piston 3. Piston 3 acts through rubber diaphragm 4 on a liquid which fills the hydraulic capsule. The capsule is connected to a self-recording pressure gauge whose scale is graduated in units of the force being measured.
$4069$EHP,M$