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Updated: June 13, 2025
Typewriting, dictaphone, switchboard operating, telegraphy, osteopathy, massage, and salesmanship are to be taught to those who are fitted for these branches; and trades and occupations, including piano tuning, winding coils for armatures used in electric motors, joinery, mat and mattress making, broom and basket making, rug weaving, and shoe cobbling are to be taught to those who are not fitted for the professions.
The heat, of whatever origin, is applied from below, and the shaft being revolved, four of the armatures lose their magnetism constantly, while the other four gain it, so to speak. As the moving part revolves, therefore, currents of electricity are set up in the wires of the armatures and are collected by a commutator, as in an ordinary dynamo, placed on the upper end of the central shaft.
Here and there were heaped up piles of ashes, bleached by weather. There were fragments of burned planks and beams; posts to which clung rusted iron-work; armatures of metal twisted by fire; all the remnants of some intricate mechanism destroyed by the flames. Clearly at some period not very remote the hollow had been the scene of a conflagration, accidental or intentional.
He produced and displayed a number of pieces of apparatus of a generally useless kind which he had ordered on the strength of their much advertising, and he observed sententiously, "We armatures get badly imposed upon."
Through the delicately adjusted, complex mechanisms the destroying beams tore. At their touch armatures burned out, high-tension leads volatilized in crashing, high-voltage sparks, masses of metal smoked and burned in the path of vast forces now seeking the easiest path to neutralization, delicate instruments blew up, copper ran in streams like water.
'And we're even helping a little to win the war, he said, 'for these coils we are winding now are for some armatures to go in some big motors that are going to be used in making munitions. So you see, we are helping a little. Bless his heart! He didn't know how much he was helping every one, just by his big, brave courage.
He saw, during the appearance of the aurora borealis of November 17, 1848, the soft iron armatures employed in the electric telegraph between Florence and Pisa remain attached to their electro-magnets, as if the latter were powerfully magnetized, without, however, the apparatus being in action, and without the currents in the battery being set in action.
Henry Ford employs a number of blind men in his factory at Detroit. There the men fit nuts to bolts, wind armatures, assemble different parts of machinery, and fold paper boxes. In his factory Mr. Ford also employs other handicapped men, and has machinery especially devised for their use.
The generating machine is driven by a locomotive engine; the resistance of its field magnets is 5.68 ohms, and of the two armatures 33 ohms. The resistance of the two armatures of the receiving machine is 36.8 ohms, and the resistance of the line is 97 ohms; the generator and receiver field magnets are excited each by a separate machine.
The armature, or moving part of the machine, consists in reality of eight separate armatures all constructed of corrugated sheet iron covered with asbestos and wound with wire. These armatures are held in place by two circular iron plates, through the centre of which runs a shaft, carrying at its lower extremity a semicircular shield of fire-clay, which covers the ends of four of the armatures.
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