An Endeavour To Secure Silent Gearing.

A Résumé of Recently Published Patent Specifications. H AD the specification No. 284,955 not borne the wellknown name of Panhard and Levassor we should have hardly thought it......

A Hydraulically Operated. Change-speed Gear.

THE gear shown, in the specification of Heinrich Bolts hauser,' No. 234,926, is of the type' in which all gears are in constant mesh, and at all times one pair of gears is being......