Stephen Balzer of New York, a former watchmaker, constructed rotary engines in the 1890s.

The facility constructed and tested engines for the Mercury and Gemini programs until its contract ended in 1968.

But that seemed to confirm their earlier suspicion that it was possible to construct superluminal engines that were quite compact.

Three prototypes were constructed, each one making gradual refinements to the machine's handling both in the water and in the air, and finally fitting more powerful engines.

During the first world war the brothers work a pedal-powered lathe, producing pieces for a Brussels workshop under the rafters of the family home; they also construct engines.

Two newly constructed 6-cylinder engines and new 4.2 and 5.6 litre V8's were added, and other engines were further upgraded.

Edward Bull started constructing engines for Boulton and Watt in Cornwall in 1781.

This one is a treatise on how to construct various engines, from wine and olive presses to artillery and siege machines.

The company constructed only two-stroke engines until 1982, when it started building four-stroke engines and aircraft engines.

He was an experienced mining engineer, able to survey, sink shafts, to construct railways, tunnels and stationary engines.