Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)
Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 197
710. SHUTTLE ARMATURE, made with soft sheet-iron plates riveted to-gether. The strongest current armaturefor small two-pole generators. … 711. MULTIPLE BRUSH COM-MUTATOR.—The brushes are adjust-able on the pivots of the handle bar, andare given an even pressure on the com* mutator by springs. 712. Front view. ELECTRIC POWER AND CONSTRUCTION. igj
Mechanical movements
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