. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fio. 79. DfsruziLi Via. Hti.—Fritsohf and Pischon dynamo DYNAMO-ELECTRIC MACHINES. 231 The Fritsche and Pischon Dynamo is illustrated in Fig. 80, and is known as the dynamo, owing to the peculiar shape of the armature. The armature-bars consist of specially shapedpunchings of sheet-iron and sheet-copper, which areriveted together. They are long and thin, and areillustrated in Fig. 80a. The punchings are sol
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fio. 79. DfsruziLi Via. Hti.—Fritsohf and Pischon dynamo DYNAMO-ELECTRIC MACHINES. 231 The Fritsche and Pischon Dynamo is illustrated in Fig. 80, and is known as the dynamo, owing to the peculiar shape of the armature. The armature-bars consist of specially shapedpunchings of sheet-iron and sheet-copper, which areriveted together. They are long and thin, and areillustrated in Fig. 80a. The punchings are solderedand riveted at the top and bottom to the speciallyshaped brass castings A and B. Copper bars arescrewed on to the castings A, which are then turnedoff on the circumference and serve as commutator-blocks. As the armature-loops are connected inseries, two sets of brushes only are required. Thelower castings B are mortised on both sides, andby this means the whole armature is clamped to-gether with strong cast-iron hubs, C, which havebrass end-rings, A in order to magnetically insu-late the hub from the armature-bars. Pressed-board uisulation, E, is used between the ring D andthe armature-spokes.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
