. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. sed, and aremade in rheostatic or resistance type, or in seriesparallel type for shunting or short-circuiting one ofthe motors. 407. COMMUTATOR CONSTRUCTION. Edison type. Acast-iron or brass sleeve s is bored to fit the shaft. On the back end is secured a steel collar
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. sed, and aremade in rheostatic or resistance type, or in seriesparallel type for shunting or short-circuiting one ofthe motors. 407. COMMUTATOR CONSTRUCTION. Edison type. Acast-iron or brass sleeve s is bored to fit the shaft. On the back end is secured a steel collar /, which is coned^^^3[^^^ at ^to fit the conical ends of the bars, a conical steel ring A slips up against theother end, and the bars are clamped upby means of the steel nut k. The insula-tion is entirely of mica, as this is the onlyinsulating material that has been found suitable for the insulation ofcommutators. The sleeve s is insulated by a cylindrical body insula-tion 7n, against which the bars are clamped. The end insulations /and / are of mica built up into conical form and pressed into shape insuitable molds. With this particular style of commutator the leads rfrom the armature wmding are soldered into an ear or cup / which isscrewed tc the ear w on the commutator bar a by means of flat-headed,countersunk 170 ELECTRIC POWER AND DEVICES. 408. SPRING BINDING POST. A quickmethod of changing electric-wire connections—press the spring and push in the wire. A most convenient binding post.
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
