Abstract: The stator laminations for a dynamoelectric machine may be first stacked in a concentric orientation and then skewed in a controlled manner after the stator is wound, with a pair of elliptically shaped alignment slots in each lamination holding a pair of alignment bolts of generally circular cross-section, such that the laminations may be first stacked onto the alignment bolts and then skewed by pivoting the alignment bolts, thereby causing relative radial movement between the laminations and the bolts as the bolts are permitted to slide within the elliptical alignment slots. In a second embodiment, a pair of radial projections on the stator laminations and a pair of channel members which surround the radial projections permit relative radial movement and canting of the projections with respect to the channel member as the channel members are pivoted to skew the stator lamination stack.

Abstract: An end plate for a squirrel cage amortisseur winding is made from four angular segments, each of the segments being of the same shape and size, the segments having portions thereof cut out along the annular inner surface and the outer edges to accommodate close nesting of the angular segments across both the width and length of a sheet of raw material to minimize waste as they are cut therefrom.

Abstract: The disclosure depicts a main field coil for use in a dynamoelectric machine. The main field coil has a support having a predetermined geometry and a solid strand electrical wire wound about the support. Coil head air vents of predetermined width are inner spaced in the wound electrical wire. A structurally rigid removable means for forming the air vents is located at least partially in the air vents. The removable means is removed from the air vents after the electrical wire is wound about the support. The present disclosure describes the apparatus and a method for forming the air vents in the main field coil.

Abstract: A main field coil for use in a dynamoelectric machine has a support having a predetermined geometry and a solid strand electrical wire with a circular cross section wound about the support. Coilhead (end turn) air vents of predetermined width are interspaced in the wound electrical wire. A structurally rigid removable pin has a grooved portion for receiving the wire and holding it as the air vents are formed, the pin being located at least partially in the air vents. The removable pin is removed from the air vents after the electrical wire is wound about the support.

Abstract: An electric motor of the type including a housing, a shaft extending through the housing, blower blades mounted on the shaft and an endplate mounted on the housing is improved due to the inclusion of a partial baffle formed with the endplate and extending toward and in proximity with the blower blades for forming a partial annular spaced interface with the blower blades.

Abstract: This invention describes a relatively undersized radially expandible sleeve member which can be easily inserted through a bore formed in a stator core. A relatively oversized plug member is then forced through the sleeve thus radially expanding the sleeve and urging the sleeve radially outwardly into engagement with the bore.

Abstract: An improved blower blade for electric motors is disclosed. The blower blade comprises from about 50 to about 75% polypropylene, from about 5 to about 10% glass fibers and from about 15 to about 45% inert filler.