Problems Created By Replacements.

C ONSIDERABLE difficulty is sometimes experienced in procuring replacement parts of commercial motors. In a. business such as that of transporting goods, time is money, and in......

A Novel Engine With A Scavenging Stroke.

Each Pair of Cylinders has a Common Combustion Chamber, One Cylinder Compressing Air and the Other a Combustible Mixture. A N INTERESTING engine, working on the four-stroke......