The Ventilation Of Motor Coaches.

A Résumé of Recently Published Patent Specifications. W E are glad te see that attention is being paid to the important subject of better ventilation of motor coaches. Although......

Spring-retaining Washers For Poppet Valves.

TO ensure a truly axial thrust on the stems of valves and thereby prevent binding is the main object of patent No. 295,212, Douglas Motors, Ltd., and C. G. Pullin. The......