Ideal Home Life - online book

A valuable and well-organized system for home education(homeschooling) 3 to 12 years.

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342                          IDEAL HOME LIFE
by wrapping a narrow strip of adhesive tape over one end, as shown in drawing D. You can now wind four turns of
No. 30 wire around the screws. (Note arma­ture winding, also direc­tion of wire in drawing W, Figure. 41.)
The opposite ends are soldered on the opposite sides of the commutator, F and F. A small alco­hol lamp and blow-tube will be necessary for this operation, as solder­ing iron is too clumsy. It will be necessary to poke the shaft through the cork armature so that it will be in posi­tion before soldering. Four layers of wire are wound on the upright part of the field. Leave enough end to act as a brush from one side and to connect to battery wire on the other end, as shown at W, Figure 41. Also note direction of wiring. Begin at K, go to M, and back to K, then repeat, cross over to N and wind up and back twice, leaving end to connect with the commutator acting as one of the brushes. The other brush is from the battery, as shown at X-2. The field can be fastened to the base with flat-head staples. Be sure your armature barely clears the arc formed by the Venetian iron field.
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