US2039623A - Condenser - Google Patents

Description

y 1936- I M. H. BENNETT 2,039,623

CONDENSER Filed Aug. 11, 1932 I V g P I m m mmmmmm INV TOR Patented May 5,193 2,039,623-

UNITEDVSVTATES PATENT OFFICE 2,039,623 CONDENSER Morris H. Bennett, Prospect, Com, assignor to Scovill Manufacturing Company, Waterbury, Conn, a corporation of Connecticut.

Application August 11, 1932, Serial No. 628,287

4 Claims. (01. 115-415) The present invention'relates to multiple plate a pair of spaced apart circular apertures havair dielectric condensers, particularly though not ing a smaller diameter than the diameter of exclusively adapted foruse in radio circuits. balls 22 cooperating with these apertures. Se-

An object of the present invention is to provide cured to the sides l2 of the condenser frame or 5 improved means for holding and maintaining in channel member are holding plates 2| which may 5 predetermined position a group or a plurality of be secured in position upon the channel member groups of stator plates. I by screws 26 threaded in the side walls l2 of the Another object of the invention is to provide channel member or condenser frame. The inconnection therewith means for insulating the shanks of the screws 25 pass through openings stator plates such that the leakage path is de- "28 in the holding plates 24. These openings may 10 creased while, at the same time, only a small be circular or elongated and in any event are 'amount of insulating material is employed in preferably larger when measured across their the electrostatic field. smallest dimension than the shanks of the A further object of the invention is to provide screws 26, the heads 30 of the screws being large means for mounting the stator plates such that enough to hold the plates 24 to the condenser 15 they can be adjusted into predetermined posiframe.

tion with respect to cooperating rotor plates, the The upper portion of each plate 24 as herein construction being such that it may be rapidly shown is provided with a pair of spaced apart assembled, and, when assembled, maintains the circularapertures 32-, whose diameter is less than stator plates rigidly in assembled position. the diameter of the balls 22, of insulating mate- Other objects of the invention will appear from rial;

the following description taken in connection As shown in Figure 2, the holding plates 24 with the acc mpanying drawing which illustrates bear against the balls 22 in line contact thereby way of example a preferred embodiment of with, a po i each ba entering its c p r- 25 the invention, and in which,- ating opening 32. Opposite the openings 32, the 25 Figure 1 is a top plan view of a portion of 9. balls similarly enter partly in the openings, prefgang condenser intermediate the ends thereof erably circular, provided for them in the channel and showing a plurality of groups of stator plates portion 2|! of the stator plate mounting strip l6.

, mounted andheldin position inaccordancewith AS a sult f the cfl m described, the

the present invention; insulating balls 22, which may be relatively small, 30

Figure 2 is a vertical transverse sectional vie have circular-line contact with the stator plate on the line 22 of Figure 1; mounting strip l6 and with the holding plate, 24.

Figure'3 is a perspective detail view on an en- The Parts r Propbrtioned 30 that, when y larged scale, showing one'of the'holding plates; r n the assembled Position 01 Figures 1 n Figure 4 is afragmentary transverse sectional the holding plates exert a pressure against the 35 view of a modified form of the invention; andinsulating balls, this pressure being exerted by Figure 5 is a fragmentary perspective view of each Plate 24 W the Otherpart of one of the frame sides. Referring to Figure 4, the frame is shown as a Referring in-detail to the drawing, the conchannel member having a bottom II and com- 40 denser shown includes a channel member having Dresion m mber sides ii. The sides 24' are 40 a bottom II and sides l2. Three groups of stator preferably cut as shown in Figure 5 or otherwise. plates with cooperating rotor plates are shown, to prov de an a m I. o pa 0! arms, p ovided though it will be understood that the number of with openinss similar to p i s 32 and groups and the number of plates in each group serv n the m P The balls thus may be varied. Between each group of cooperbear against the channel member It about the 45' I ating plates is a shield ll secured to the channel edges f the ball Openings in the channel P r i n 'member and preferably extending laterally 20'. The stator plates may be staked to the yond the de walls l2 of the channelmem r. channel member It as indicated at IS.

The state. :plates of each group are secured withthis construction, compression is exerted a metal strip I! by being staked thereto as shown as bef r n f n w-r 8 7, the 811118 50 m y b in Figure 2 at IS. The metal strips I are a h bent with respect to the frame to insure the deprovided with a laterally projecting and longitusired compression and maintenance of the stator dlnally extending channel-2| and the-vertical plate assembly or assemblies in predetermined faces of these channels, in the embodiment of "position.

I thelnvention hereinillustratedareprovided with witntheiconstruction described. the leakage Q path has been, made relatively small while, at the same time, only a relatively small amount of insulating material has been employed; also assemblyofthepartsisrelativelysimpleandcan be accomplished with adjustment of the stator plates in their final predetermined position; further, the construction is such that compression is produced by the holding plates which are themselves rigidly mounted, so that each stator plate group when assembled is, in use, maintained permanently in predetermined position.

What is claimed is:

1. In a condenser, a frame having sides, a group of stator plates, a group of rotor plates interleaved therewith, and means for mounting the stator plates in the frame comprising opposed assembly members to which said stator plates are secured in permanent predetermined spaced relation to each other, each of said as sembly members having a channel portion and each having spaced openings in the channel portion thereof, opposed holding plates adjustably secured to the frame sides and having openings therein spaced equally with arid in cooperative relation to said first named openings, and insulating mounting devices each of which bears partly against the edge of an opening in the holding plate and partly against the edge of an opening in said assembly member, said insulating mounting devices being larger than their cooperating openings and extending partly into each of their cooperating openings, and said opposed holding plates exerting pressure towards :each other through said insulating mounting devices and said stator unit.

2. In a condenser, a frame having sides, a group of stator plates, a group of rotor plates interleaved therewith and means for mounting the stator plates in the frame comprising opposed assembly members to which said stator plates are secured in permanent medetermined spaced relation to each other, each assembly member having a channel portion and each having spaced openings in the channel portion thereof, opposed holding plates adjustably secured to the frame sides and having openings therein spaced equally with and in cooperative relation to said first named openings, and insulating balls each ofwhichbearspartlyagainsttheedgeofan opening in the holding plate and partly against theedgeofanopeninginthecooperatingassembly member, the balls beingof larger diameter than said openings and said opposed holding plates exerting pressure towards each other through said halls and said stator unit.

3.Inagangcondenser,aframehavingsubstantially parallel sides, a plurality of groups of stator plates, a group of rotor 'plates interleaved with each group of stator plates, and means for mounting each group of stator plates in the frame comprising a pair of channeled assembly members secured to said stator plates along opposite edges of said plates and holding said plates in permanent predetermined spaced rela-- tion to each other, each assembly member having at least two circular openings in the channel portion thereof, a holding plate for each channeled assembly member, eachholding plate having a portion provided with screw receiving openings, screws in said openings of smaller diameter than said openings and adjustably securing the holding plate to the frame sides, each holding plate having an oifset portion provided with a pair of circular openings spaced equally with and in cooperative relation to said first named openings, and insulating balls each of which bears partly against the edge of an open- 'ing in the offset portion of a holding plate and partly against the edge of an opening in the cooperating channeled assembly member, the balls being of larger diameter than said openings and said holding plates exerting pressure towards each other and against the stator plates, said pressure being through said balls and the channeled portions of said assembly members and said stator unit.

4. In a condenser, a frame having sides, a group of stator plates, 8. group of rotor plates interleaved therewith, and means for mounting the stator plates in the frame comprising opposed assembly members to which said stator plates are secured in permanent predetermined spaced relation to each other, each of said assembly members having a channel portion and each having spaced openings in the channel portion thereof, opposed holding plates adjustably secured to the frame sides and having openings therein spaced equally with and in cooperative relation to said first named openings, and mounting devices each of which bears partly against the edge of an opening in the holding plate and partly against the edge of an opening in said assembly member, said mounting devices being larger than their cooperating openings and extending partly into each of their cooperating openings, said opposed holding plates and mounting devices comprising insulation to low-- late the stator from the frame, and said opposed holding plates exerting pressure towards each other through said mounting devices and said stator unit.

MORRIS n. BENNETT.

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