Mechanical Principles.

As Applied to the Loading and Unloading of Vehicles. M ANY OF THE detail improvements in commercial motor vehicles we owe directly or indirectly to the drivers. Taken in the a......

A New American Tractor Notion.

The Latest Improvements in the Knox Tractor Truck. By Henry Sturmey. Some three years ago, shortly after the outbreak of war, I described in the pages of THE COMMERCIAL Moron......