John A. BOSMANS
Engine
Popular Science ( April 1927 )
"Amazing Engine Has Fewer Parts"
Of extraordinary design, a new auto motor having no connecting rods, wrist pins, or crank case, and said to allow 20 % more mileage to a gallon of gas, has just been invented by John A. Bosmans, of Brooklyn NY. Owing to its simplified construction, Bosmans says, its efficiency is doubled; and he can take the motor apart, remove the crank shaft and put it all together again in 30 minutes. The same simplicity, he declares, will decrease its cost of manufacture to a fraction of the present cost of an equally powerful engine.
Eight cylinders are set in horizontal blocks on opposite sides of the motor. There are 4 double-headed pistons, each working in two cylinders! As one cylinder fires, the gas in the opposite one is compressed, and a moment later the cycle is reversed. Power reaches the crank shaft through a 4-sided bearing that slides in a diagonal groove within the piston, and each revolving bend of the crank shaft is entirely contained inside the hollow piston shell.
More than twice as long as in ordinary motors, the unusual piston cannot wobble as much as a short one within the cylinder walls: hence it will not wear down the piston chambers and make regrinding necessary. Absence of vibrations and unusual fuel economy are other results claimed for this remarkable construction.
Power Plant
US1710721
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