Armature for dynamo-electric machines
US 336087 A
Description (OCR text may contain errors)
O. F. BRUSH.
, ARMATURE FOR DYNAMO ELBOTRIG MAGHINES. No. 336,087. Patented Feb; 16, 1886.
UNITED STATES PATENT OFFICE.
CHARLES F. BRUSH OF CLEVELAND, OHIO.
ARMATUR E FOR DYNAMO-ELECTRIC MACHINES.
EPZECIFICLTION forming part of Letters Patent N0. 336,087, dated February 16, 1886.
Application filed May 13, 1894. Srrial No 131.395.
T0 aZZ whom it may concern:
Beit known that I, CHARLES F. Baum, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Armatures for Dynamo-Electric Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.
Figure 1 is aside view of my improved armature-ring without the bobbins. Fig. 2is a top view of the same. Fig. 3 shows the ring partially formed and before the bobbin-spaces have been out out.
The present invention relates to armaturerings for dynamo-electric machines of thekind shown in Patent No. 285,457, granted to me September 25, 1883.
According to the present invention a band formed armaturering is constructed by winding or building up a series of superposed layers of band-iron of the full width of the armature and then cutting away portions to form the bobbinspaces. Iprefer to form the ring by winding the band-iron upon a suitable base-ring, and in order to insulate the layers one from another I may cover the band with suitable varnish or paint, or wind in with the iron an interposed ribbon of paper or other suitable insulating-web. It is evident that the ring may also be formed by winding two or more bands together, or by buildingup the ring with separate concentric layers, or by winding one or more long bands with interposed snort pieces of the same width.
i l i (No model.)
In the drawings,A is the base-ring, to which the hub is secured, and upon which the bandiron is wound or built up. One end of the band-iron B is secured by rivets or otherwise to the base-ring, and the band is then wound tightly around the base-ring and uponitselt' in the manner shown in Fig. 3 until the desired thickness of ring is obtained, when the end of the band is secured, as at b, Fig. 1. Suitable bolts or rivets, O, are then passed through the ring radially to secure the layers together, after which the bobbin-spaces are formed by cutting away at the places indicated at D in Figs. 1 and 2. This may be done by the ordinary milling, planing, or slotting machines. The ring thus completed may be wound with wire in the ordinary manner, and will form an armature of exceptional solidity and ethciency.
I claim herein as my invention- An armature composed of superposed layers of baud-iron wound one upon another, the opposite faces of which are provided with radial grooves situated directly opposite one another and extending the entire width of the ring, the side walls of the grooves being made integral with the layers of the band, substantially as set forth.
In testimony whereof I sign this specifica tion, in the presence of two witnesses, this 23d day of April, 1884.
CHARLES F. BRUSH.
E. B. PHILLIPs, ALBERT E. LYNCH.