公开(公告)号：US3734145A

公开(公告)日：1973-05-22

申请号：US3734145D

申请日：1971-04-20

Applicant: ESSEX INTERNATIONAL INC

Inventor： EMINGER R ,  TYSON C

IPC: B21F3/04 ,  H02K15/04

CPC classification number: H02K15/0435 ,  B21F3/04

Abstract: Apparatus for forming concentric, multi-turn, nested dynamoelectric machine field coils in which first and second concentric coil forms are provided each having first and second parts for respectively forming first and second opposite end portions of the first and second coils which are respectively connected by generally straight side portions. Each of the first parts comprises two elongated, spaced, parallel pins arranged to form generally straight first end portions of the respective coil, each of the second parts being laterally spaced from the respective first part thereby to form the side portions of the respective coil. Each of the second parts has a first section comprising two elongated, spaced, parallel pins and a second section comprising two elongated, spaced, parallel pins spaced from the first section pins on the side thereof remote from the respective first part and parallel with the first section pins. The pins of each of the second parts are arranged in a pattern to form the second end portion of the respective coil with generally straight side sections respectively joined to the respective side portions and converging to and joining a generally straight end section parallel with the first end portion.