Home-made Toy Motors / A practical handbook giving detailed instructions for building simple but operative electric motors

The handbook explains the basic principles of magnetism and how electric motors convert electricity to mechanical motion, then gives step-by-step instructions, diagrams, and material lists for building simple home-made motors and small engines. It covers several designs — two- and three-pole armatures, an overtype and Manchester model, magnetic-attraction and laminated-frame constructions, and experimental induction and power motors — and describes winding, commutators, brushes, bearings, wiring, and assembly techniques. Emphasis is on inexpensive materials, safe assembly, and practical adjustments to produce operative toy motors suitable for hobbyists and classroom demonstration.