
3B SCIENTIFIC
Steam Engine, Transparent  1002997 
Instruction sheet 
04/12 JS 
®
 PHYSICS 
1 Steam outlet 
2 Steam inlet 
3 Steam boiler 
4 Slide valve to determine steam input 
5 Flywheel 
6 Connecting rod 
7 Piston 
8 Cylinder 
1. Description 
A steam engine operates in a two-stroke cycle 
recognisable by the inward and outward motions 
of the piston. 
The outward motion of the piston is the working 
stroke and is powered by steam pressure, which 
is then transferred via the connecting rod to the 
flywheel. The return motion of the piston is propelled in the simplest instance either by the energy stored in the flywheel or by using a “double 
acting” piston whereby steam pressure is used 
to push the piston in both directions. 
The input of steam into the cylinder is controlled 
by a slide valve. 
2. Operation 
Additionally recommended: 
Overhead Projector (230 V, 50/60 Hz)  1003264 
or 
Overhead Projector (115 V, 50/60 Hz)  1003263 
•  Lay the transparency on the daylight projec-
tor. 
•  Move the components by hand to the places 
which correspond to the various strokes. 
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Subject to technical amendments 
© Copyright 2012 3B Scientific GmbH