US405441A

US405441A - Elmer a

Info

Publication number: US405441A
Authority: US
Publication date: 1889-06-18
Anticipated expiration: 1906-06-18

Description

(No Model.)

E. A. SPE'RRY.

DYNAMO.v

No. 405,441. 7 Patented June 18,1889.

UNITED STATES PATENT OFFICE.

ELMER A. SPERRY, CHICAGO, ILLINOIS, ASSIGNOR TO THE SPERRY ELECTRIC COMPANY, OF SAME PLACE.

DYNAMO.

SPECIFICATION forming part Of Letters Patent No. 405,441, dated June 18, 1889.

Application filed February 11, I889. $eria1No. 299,477. (No model.)

To all whom it may concern; to the spider and the armature to it, is such Be it known that I, ELMER A. SPERRY, a that the strains resulting from the support of citizen of the United States, and a resident such armature on the bolt and from the sup- 50 of Chicago, in the county of Cook and State port of the bolt and armature on the spider 5 of Illinois, have invented certain new and are independent of each other, and the strain useful Improvements in Dynamos, of which on the armature is wholly within itself. From the following is a specification. this resultsa far greatersecurity and accuracy My invention relates to improvements in in fixing and retaining the armature in posi- 5 5. dynamo-electric machines, and has for its obtion with reference to the field-magnets. IO ject to provide means for conveniently and I claim as new and desire to secure by Letsecurely supporting the armature. ters Patent- My improvement is illustrated in the are 1. In a dynamo-electric machine, the comcompanying drawings, wherein bination of a rotating spider with a series of 60 Fi 'ure 1 is a cross-section throu h one bolts ro'ecting therefrom and secured I 5 field-magnet and one portion of the armature, thereto and an armature secured on such and Fig. 2 is a front view of the field-magnets bolts independently of the spider.

and armature with commutator removed. 2. In a dynamo-electric machine, the com- Like parts are indicated by the same letter bination of a rotating spider wit-h a series 65 in all the figures. of bolts projecting therefrom and secured A is the armature-shaft, which carries the thereto by a collar and nut on opposite sides spider B, having sundry arms C radiating of such spider-arms, with an armature secured therefrom. to such bolts independently of the spider.

D D are the field-magnets, composed each In a dynamo-electric machine, the com- 70 of a single piece having the channel E to rebination of a rotating spider with a series of ceive the cylindrical armature F and the end bolts secured thereto and projecting there- G to receive the winding H. The armature from, and an armature secured on such bolts is wound with transverse coils divided into between a flange and a nut on each of said sections, from each of which passes a conductbolts. 7 5 or J to strip K, which in turn is connected 4. In a dynamo-electric machine, the comwith the commutator-bar L, which is sup bination of a rotating spider with a series of ported on the shaft by means of the collar M bolts projecting from the arms thereof, each and the insulation N. On each arm of the secured thereto by a flange and nut on oppospider is supported a bolt 0 by means of the site sides of such spider-arm, with an arma- 8o washer P and nut R on opposite sides of such ture secured on such bolts, between a flange 3 5 arm. and a nut on each of them.

S is the armaturecore on which the wire is 5. In a dynamo-electric machine, the comwound. On the bolt 0 is the flange T, and bination of a rotating spider with an annular on its extremity is the nut U. About this. armature and bolts, which project from and 85 bolt is suitable insulation. 4 are secured to the spider, and to which in 0 The use and operation of my invention are turn is secured the armature independently as follows: The shaft being rotated, the arof the spider. mature is rotated in the channels of the field- Dated this 9th day of February, 1889. magnets, and if such magnets are energized T currents will be developed on the armature ELMER SPERRX and given off on the commutator in the usual WVitnesses:

manner. The arrangement of collar, flange, CELESTE P. CHAPMAN, and nuts on each bolt, whereby it is secured FRANCIS M. IRELAND.