GB190524877A - Improvements in Dynamo Electric Machines. - Google Patents

Abstract

24,877. Hills, A. F., Urquhart, D., and Honey, A. E. Nov. 30. Armatures; commutators. - The bands of wire wound round the projecting end conductors of a drum armature to retain the conductors in place are used as equalizing-rings to which to connect certain of the commutator lugs or certain symmetrical points on the end windings. The projecting end conductors b, lying upon, but insulated from, the end plates c, are wound round with wire f, g of high conductivity and tensile strength, e.g. phosphor-bronze, insulated from the armature, enough wire being employed to carry safely the equalizing-current. The combined equalizing and retaining bands are connected to the commutator lugs by lengths of flat copper strip h which passes beneath the equalizing-band and is folded over, the other end being bent so as to lie along the armature conductor, with which it is inserted into the commutator lug. The equalizing-ring may be connected directly to the armature conductors by means of strips i, Fig. 4, one end of which is folded round the bared conductor and the other end k bent around the equalizing-ring. The retaining-bands at both ends may be employed as equalizing-rings.