US257007A - William hochhausef - Google Patents

Description

(No Model.)

W. HOGHHAUSEN.

DYNAMO ELECTRIC MACHINE.

No. 257,007. Patented Apr.2 1882.

m IJUUU m Y UNITED STATES PATENT OFFICE.

WILLIAM HOGHHAUSEN, OF NEW YORK, N. Y.

DYNAMO-ELECTRIC MACHINE.

SPECIFICATION forming part of Letters Patent No. 257,007, dated April 25, 1882.

Application filed February 17, 1882. (No model.)

To all whom it may concern:

Be it known that I, WM. HOGIIHAUSEN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Dynamo -Electric Machines, of which the following is a specification.

My invention relates to that portion of the machine known as the armature or armature-carrier, upon which are wound or mounted the coils of wire in which the induced currents are set up by the revolution of the carrier in a magnetic field.

Myinvention consists in acertain novel construction of the carrier, that will be specified in the claims, the object being to make a sectional armature-carrier the parts of which, with their surrounding coils of wire, may be separately detached from the armature structure when it is desired to remove or repair any coil or helix.

My invention also consists in a certain novel arrangement of the slots that are cut in the armature-sections to prevent the circulation of induced currents in the material of the armacure-carrier.

Referring to the accompanying drawings, Figure 1 is a top view of an armature carrier embodying my invention with the bobbins of insulated wire removed. Fig. 2 is an end view of the armaturecarrier. Fig. 3 is a perspective view of one section of the carrier and a portion of an adjacent section, one of the bobbins or helices being shown in place. Fig. 4 is a detail view, showing a clamp for clamping two adjoining sections together at or near the middle of their abutting edges. Fig. 5 is a perspective view of a modification, showing also the arrangement of the slots made in each section to prevent the circulation of induced currents in the material of the armature-carrier.

Arepresents the shaft of the machine, to which are secured in the ordinary mannerthe spider-frames to which the armature proper is connected.

B B B represent'the arms of the spider-frame, which in the present case are shown as connected by a circular rim, (J, for the purpose of giving strength and stiffness to the structure. The part 0 may, however, be omitted, if desired. The sections of the armature are constructed and mounted upon these spider-frames in the following manner: Each section consists of two longitudinal bars, D, parallel to the armatureshaft, connected by a series ofparallel segmental bars or rods, E, which may be connected to the bars by riveting or in any other suitable manner, or may be cast in one piece with them. The segments E in the same section are preferably separated from one another by small spaces to prevent the circulation of induced currents and to allow the passage of air-currents for cooling the armature. Each bar D projects beyond the segments a sufficient distance at either end to allow it to be supported upon and secured to the spidert'rame, and to also, when the connecting-rim C is employed, allow space for the wires of the armature between the end of the section and the spider-frame. The bars rest upon the spider-frame in the manner shown in Fig. 2, and are held in place and prevented from shifting upon the carrier by the clamps F, which are seated in notches in the spidertrame and held down by screws or bolts.

G, Figs. 8 and 4, represents a clip, which embraces the bars of two adjoining sections and prevents them from bulging out at the middle. This clip is prevented from dying 011' by the same bands which hold the wire of the armature down to the carrier.

The length circumterentially of each section is a matter of convenience. It may be made long enough to carry one, two, or more of the arm attire-coils, but preferably there should be as many sections as there are separate coils or bobbins.

In order to give as much mass as possible to the armattire-carrier when of iron, andyet to prevent the circulation of induced currents, I sometimes employ the form shown in Fig. 5. Here each section is nearly solid, the slots being distributed as shown and extending only part waycircuint'erentially through thescction, but sutticiently far to overlap some other slot in the section, so that no path is left for the induced currents. The adjoining sections are fastened together by double dovetails, as indicated at H, and are attached to the spiderframe by the projecting rods, bars, or pins M, which are connected to the sections of the armature-carrier in any suitable manner and at any desired points.

I am aware that armattire-carriers made in sections are old, and I do not therefore claim such, broadly.

hat I do claim is- 1. The combination of the notched spider frame, the armature-sections having longitudinal projecting bars or rods D, and the clamps F, secured to the spider-frame.

2. The combination, with the notched spiderframe, of the detachable annature-sections, each consisting of the longitudinal bars D, con nected by a series of parallel bars or rods, E.

8. The combination, substantially as described, of the armature-sections having the longitudinal projeetingbars or rods,the notched spider-fran'ies, and the clamps seated in the notched spider-frames and embracing the ends of the bars or rods.

4. The combination, substantially as described, with two adjoining detachable armature-sections, each having a longitudinal bar or red, of a clip, H, embracing the abutting bars so as to prevent bulging at the middle.

5. An armature-carrier provided with slots distributed and arranged in the manner shown, so that each slot extends only part way cireumferentiallyand only sufficiently far to overlap some other slot in the same section.

6. The combination, substantially as de scribed, of the bars I) and their connectingsegments, the notched spider-frames, and the clamps I embracing and clamping the ends of the abutting bars in two adjoining sections.

\VILLIAM HOCHHAUSEN.

Witnesses:

H. U. TOWNSEND, Tues. TOOMEY.

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