ich the shoes, C, protrude. The projections boss, there is obtained a spring-carried engine.” and three-quarters broad, and is set in a magnificent This engine, says the Mechanical World, is very pow- Gothic case. It shows the seconds, minutes, quarter connecting piece, D, bridging the portion of… … until spring. The great face of the clock the experimenter. The acid content Fig. 2. Fig. 4. has thirty-two distinct compartments. A itself had disappeared. Upon these ob- SPRING WHEELS FOR TRACTION ENGINES. whole series of movable pictures are ex- servations Professor Simmler based his hibited in…
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