Massey Harris SAWYER-MASSEY

The register lists here five versions with 7.4 to 18.6 kW, or 10.1 to 25.3 hp, from four-cylinder engines of 4,417 to 16,088 cm³ displacement, unladen weights from 2,359 to 7,983 kg, lengths from 3,378 to 4,826 mm, widths from 1,549 to 2,743 mm and speeds from 600 to 680 rpm.

In the early days of the tractor industry, such makers stood alongside the big US brands such as International Harvester and Case for the transition from steam to internal-combustion traction; the heavy, low-revving engines were designed to drive threshing machines and other stationary equipment via the belt pulley.

Surviving examples are museum and collector's pieces; the condition of cylinder bores and cooling, the tightness of the kerosene or petrol carburettors and the completeness of the belt pulley and drawbar gear matter, since spare parts can be sourced almost exclusively through new-made parts from specialists in historic farm machinery.