129,178. Lightfoot, T. W. Oct. 7, 1918. Limbs, artificial.-An ankle joint is constituted by two interlocking eyes formed on the ends of bolts C, one of which is fixed to the leg member A and the other to the foot B. Surrounding the joint, between the leg and foot members, is a ring of india-rubber D, which is retained in compression by nuts on the bolts C at the ends away from the joints. A block F of rubber limits the flexion of the ankle in the forward direction. Reference is made to Specifications 15139/87. 9462/06, and 118,571.
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