Davenport, Iowa. Filed Oct. 11, 1909. Serial No. 522,029.
The patent for the two-cycle explosion engine Sieverkropp
1. An explosion engine having like cylinders in parallel
relation, said cylinders being spaced apart and intercommunicating
at each end, with both ends of each cylinder normally closed to the
atmosphere and the two cylinders at the adjacent walls each having
a longitudinal slot matching that of the other cylinder, pistons in
the cylinders, a connecting member for the pistons traversing the
slots in the cylinders, an inlet port in one cylinder controlled by
one end of the piston in the said cylinder, an exhaust port in the
same cylinder controlled by the other end of said piston, a port at
the power end of the other cylinder controlled by the piston in
said other cylinder, the last named port communicating with the end
of the same cylinder remote from the power end, a base or support
for the cylinders, a crank shaft mounted in said base, and a pitman
between the crank shaft and the connecting member for the pistons,
the base constituting a closure for the corresponding ends of the
cylinders where engaging said cylinder ends.
2. An explosion engine having like cylinders in parallel
relation, said cylinders being spaced apart and inter-communicating
at each end, with the ends of the cylinders normally closed to the
atmosphere, pistons in the cylinders connected for movement
simultaneously in the same direction, an inlet port in one cylinder
controlled by one end of the piston in said cylinder, an exhaust
port in the same cylinder controlled by the other end of said
piston, and a port at the power end of the other cylinder
controlled by the piston in the said other cylinder, the last named
port communicating with the end of the same cylinder remote from
the power end.
Pictured on the left is a Sieverkropp 1 HP 1910 Model 2 cycle, 2
cylinder but one spark plug, hopper water-cooled, buzz coil battery
ignition. Engine on the right is a Waterman inboard boat engine
with copper water jacket, 2 cycle, 3 HP, buzz coil, battery
ignition, brass water-cooled muffler.
This large engine is a Red Wing 2 HP, 1907 boat engine made by
the Red Wing Boat Company, Red Wing, Minnesota. It has steel
water-cooled muffler, buzz coil, battery ignition and weighs 200
lbs.
Two views of an engine found in a dump. Dimensions 20′ high,
13′ wide, approximately 2-1/2′ bore 4′ stroke. Frame is
bronze rods and eccentric rods are bronze. It is an upright and
concave mounting for side of boiler. Who can tell what it is. Also
a chain sprocket in center. It will be restored.