Improvements in or relating to holders for egg production recording apparatuses

摘要

993,087. Egg-registering devices. H. E. BIRCH-JENSON. Aug. 29, 1963 [Sept. 6, 1962], No. 34240/63. Heading A1M. [Also in Division G4] A harness for a hen has a part located beneath the hen's tail root and provided with two projections 3, 3a directed forwardly to bear from behind against the posterior bone of the pelvic girdle. The operation of laying an egg depresses and then releases a lever 5 to operate a counter 4. Specification 915,242 is referred to.