US1728817A

US1728817A - End shield

Info

Publication number: US1728817A
Application number: US244835A
Authority: US
Inventors: Alexander P Wood
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1928-01-06
Filing date: 1928-01-06
Publication date: 1929-09-17
Anticipated expiration: 1946-09-17

Description

Sept. 17, 1929. R WOOD 1,728,817

END SHIELD Filed Jan. 1928 Inve ntorw Alexander PAY/00d t-iLs Attorney.

Patented Sept. 17, 1929 UNITED STATES PATENT OFFICE ALEXANDER P. W001), OF SCHENEC'IADY, NEW YORK, ASSIGNOR TO GENERAL ELEC- TRIO COMPANY, A. CORPORATION OF NEW YORK END SHIELD Application filed January 6, 1928. Serial No. 244,835.

or dies required in these methods of manu-.

facture has made the cost of the end shields quite high.

The object of my invention is to provide an improved end shield which can be made for any diameter of machine from the same die or pattern so that the cost of making the end shield will be greatly reduced. I accomplish this by constructing the end shield of a plurality of sections arranged with the side of each section in spaced relation to the side of the adjacent section and converging toward and overlapping the same.

My invention will be more fully set forth in the following description referring to the accompanying drawing and the features of novelty which characterize my invention will be pointed out with particularity in the claims annexed to and forming a part of this specification.

In the drawing the single figure shows a perspective view of the stator of a dynamoelectric machine provided with my improved end shield.

Referring to the drawing, the stator in connection with which I have illustrated my invention comprises a frame 10 having laminations 11 which are supported therein in any suitable manner and a. winding, the end connections 12 of which extend axially beyond the ends of the frame.

In accordance with my invention, an end r shield 13 is provided for the end connections of the winding comprising a plurality of sections 14. Each of these sections'lt are formed by bending a strip of metal in the form of a. suitable curve at 14 so that when the sections are assembled to form the end shield they extend from the end of the stator i frame over the end connections 12. The outer ends 14! of the sections 14 may be secured to the stator frame in any suitable manner, but in the construction illustrated, flanges 14 are formed thereon which are bolted to the stator frame at 15. The sections are arranged with the sides of the outer ends 14 in spaced relation and converging so as to overlap at 14E so that the end shield can readily be made up entirely of the sections 14 with their overlapping portions 14 bolted at 16 or otherwise secured together witnout the necessity of using reinforcing bands or rings.

By building up the end shield of a plurality of sections of the same form in this manner, it is not necessary to make the sections of different shape for each diameter of machine, it being only necessary to secure together enough of the sections to form an end shield of the required diameter. In this construction the only differences between the shields of various diameters will be a slight change in the degree of convergence of the sides of the sections 14 when they are assembled.

It will thus be seen that I have produced an end shield for dynamo-electric machines which can be readily constructed of any suitable diameter without the use of a large number of patterns, jigs or dies, formerly required in making end shields of different sizes.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. An end shield for dynamo-electric machines comprising a plurality of sections arranged with the side of each section in spaced relation to the side of the adjacent section and converging toward and overlapping the same, and means for securing the overlapping sides of said sections together.

2. An end shield for dynamo-electric machines comprising a plurality of sections, the sides of each of which are substantially parallel, said sections being arranged with the side of each section in spaced relation to the side of the adjacent section and converging toward and overlapping the same, and means for securing the overlapping sides of said sections together.

8. In combination With a dynamo-electric machine having a frame and windings projecting therefrom, an end shield for said windings comprising a plurality of curved sections arranged with the side of each section in spaced relation to the side of the adjacent section and converging toward the same, means for securing the outer ends of said sections to said frame, and means for securing the inner ends of said sections together.

4. In combination with a dynamo-electric machine having a frame and windings projectmg therefrom, an end shield for said windings comprising a plurality of curved sections, the sides of each of which are substantially parallel, said sections being arranged with the side of each section in spaced relation to the side of the adjacent section and converging toward and overlapping the same, means for securing the outer ends of said sections to said frame, and means for securing the inner ends of said sections together.

In witness whereof, I have hereto set my hand this 5th day of January, 1928.

ALEXANDER P. WVOOD.