Electricity for everybody; by Atkinson Philip

Author:Atkinson, Philip. [from old catalog]
Language: eng
Format: epub
Tags: Electricity
Publisher: New York, The Century co.
Published: 1907-03-25T05:00:00+00:00

Fig. 56.

DYNAMOS.

127

mounted directly on the shaft, round which they curve at each end, as shown, crossing spirally from one side of the

cylinder to the other, so that there is no interior wire, as in the ring armature; and their ends are attached to the commutator, as shown.

This core is also laminated, being composed of sheet-iron disks, insulated as above, one •of which is shown in Fig. 58. In its centre is a hole for the shaft, and around this are four holes for ventilation, which, being placed in line in the several disks when the core is constructed, make four ventilating tubes which, in some armatures, connect with narrow openings, at intervals, between the disks.

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