Патент USA US2409185код для вставки
Oct.v 15, 1946. A. J. BERNESK! 2,409,184 GENERATOR CONSTRUCTION Filed March 5, 1945 WITNESSES :‘N 4% INvEm‘roQ /7/? 2770/1] J. 56/778555" ATTOR N EY Patented Oct. 15, 1946 2,409,184 UNITED STATES PATENT OFFICE 2,409,184 GENERATOR CONSTRUCTION Anthony J. Berneski, Latrobe, Pa., assignor to Westinghouse Electri c Corporation, East Pitts burgh, Pa., a corporation of Pennsylvania Application March 3, 1945, Serial No. 580,879 1 Claim. My invention relates to rocker-ring mountings for commutator-type dynamo-electric machines, and while my invention is of general application, it is more particularly designed for machines in which space-requirements are at a premium, and in which it is necessary to occasionally loosen the clamping-means for the rocker-ring, in order to angularly adjust the rocker-ring within the ma (Cl. 171-324) 2 chine from the front end thereof, before the front endbell 9 is attached in place. According to my present invention, a plurality of removable segments I8 are ,removably secured to the inner periphery of the front frame-ring, as by means of bolts I9, after the rocker-ring I5, with its brushholder—assembly, has been inserted in the machine, and before the front endbell 9 has been attached to the machine~frame I. The front endbell 9 is then secured to the front frame ring I0. I also provide rocker-ring clamps 2I, which endbell. are accessible through the commutator covers I2, The object of the invention is to provide an im~ proved rocker-ring clamping-means, having re 15 to clamp the rocker-ring I5 back against the shoulders which are provided by the removable movable segments which are bolted to the inner segments I8, clamping-bolts 22 being utilized for periphery of the front frame-ring, after the rock this purpose. er-ring, with its attached brushholder-assembly, In operation, when the machine is in service, has been put in place, and before the front end if it is necessary to adjust the angular position bell has been secured to the machine. In this 20 of the brushes I1 with respect to the commutator way, I provide an abutment against which the 5, it is only necessary to remove the commutator rocker-ring may be clamped, by clamps which covers I2, and reach in and loosen the clamping are subsequently accessible through'the remov bolts 22, after which the rocker-ring I5 may be able commutator-covers of the machine. With the foregoing and other objects in view, 25 rotated to its desired adjusted position, after which the clamping~bolts can be retightened, my invention consists in the parts, structures, thus drawing the clamps 2| against the face of combinations, and assemblies, hereinafter de the rocker-ring I5, and again holding the latter scribed and claimed, and illustrated in the ac securely in place. It will be observed that this companying drawing, wherein chine, so as to properly position the brush-rigging with respect to the commutator. More particu larly still, my invention was designed for a par tially enclosed generator, with a drip-proof front Figure 1 is a longitudinal view, partly in sec 30 adjustment is accomplished by clamps 2!, and clamping-bolts 22, which are altogether acces tion and partly in elevation, showing a three-wire sible from the spaces covered by the removable direct-current generator embodying my inven commutator covers I2, so that there are no loose tion, and parts, back of the rocker-ring I5, that is, be Figs. 2 and 3 are detail views of the improved rocker-ring clamping means and of the remov 35 tween the rocker-ring I5 and the front endbell 9, so that it is not necessary to remove the front end able segmental abutments for the rocker-ring. bell 9, which supports the front end of the rotor In Fig. 1, I have illustrated my invention as be~ shaft 3, through a bearing 23. At the same time, ing applied to a three-wire direct-current gen~ the provision of the removable abutment-seg erator, having a framel, and a rotor member 2 which is mounted on a shaft 3. The rotor mem 40 ments I8 makes it possible to assemble the brush holder structure in the ?rst place, that is, in the ber 2 comprises an armature 4, a commutator 5, factory, before the front endbell 9 is assembled and a blower 6. The frame I has ?eld windings on the machine. ‘I, a rear-end air-intake 8, and a removable front I claim as my invention: endbell 9, which is removably attached to the front frame-ring I 0. The front endbell 9 has 45 A commutator-type dynamo-electric machine having a frame having a front frame-ring and louvred air-outlets I I, which are illustrated as be a removable front endbell, and a rotor-member ing inclined, so as to make the generator drip having a commutator, said frame having a rock; proof. The generator frame I also has removable er-ring ?tting Within the inner periphery of said commutator-covers I2, through which access may be had to the space around the commutator 5, 50 front frame-ring, a brush assembly carried by said rocker-ring, a plurality of removable seg while the machine is in service. ments removably secured to the inner periphery Mounted within the front frame-ring If] is the of said front frame-ring in position to provide rocker-ring I5, toward which my present inven abutments for said rocker-ring, and clamps en tion is especially directed. The rocker-ring I5 gaging the opposite face of said rocker-ring and insulatingly supports a brushholder-assembly 55 tightenable to clamp said rocker-ring against comprising brushholder brackets I6 and brushes said abutment-segments. I1. This entire brushholder-assembly, including the rocker-ring I6, must be inserted into the ma ANTHONY J. BERNESKI.