US1607856A

US1607856A - Electrostatic condenser

Info

Publication number: US1607856A
Application number: US93620A
Authority: US
Inventors: Ernest E Yaxley
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-03-10
Filing date: 1926-03-10
Publication date: 1926-11-23
Anticipated expiration: 1943-11-23

Description

Nov. I23 1926.

1,607,856 E. E. YAxl- EY ELECTROSTATIC coNDENsER Filed March 1o; 1926 l 'g Z is preferably Patented Nov. 23, 1926.

:ERNEST E. YAXLEY, OF CHICAGO, ILL'INOIS.

VILIIZIECTROSTA'IC CONDENSER.

Application tiled March 10, 1925. Serial No. 93,620.

My invention relates to electrostatic condensers employing relatively fixedy plates and has for its general object an improvement in the mechanical construction of such condensers for the purpose of simplifying the parts thereof and ensuring electrical accuracy.

In accordance with one characteristic of my invention, an insulating member is provided which is formed or provided with an angular rim or other abutment and with which two metallic condenser plates are assembled in a manner to be disposed within said rim. Each of these plates is formed f with a plurality 'of projections extending at one border beyond the body thereof toward said rim or other abutment, these projections upon each plate being so relatively positioned as to prevent the portions of the plate border between the projections from contact- ,ing with the rim. The dielectric which is disposed between the plates is of suchl size that its border extends beyond the border portions of the plate that intervenes between the plate projections. In the preferred embodiment of the invention, the projections upon each plate are in staggered relation to the projections upon the other. By this ar rangement, any burrs or inequalities that are present upon the border of either con-y denser plate are prevented, by the dielectric, from contacting with the other condenser plate, an important feature of construction in the mass productionof condensers.

In accordance with another feature of my invention, the insulating member which is formed with the angular rim, as hitherto stated, is in the form of a plate, there heilig means for clamping all of the plates of the condenser together. This clamping means in the form of a rivet passed through all of the plates and the dielectric, this rivet having heads upon its ends between which the plates and dielectric are dis posed. These structural features of my invention are believed to be new with me whether or not the metallic condenser plates are provided with projections for the purpose of preventing the body portions of the condenser plates from engaging the rim of the insulating plate.

The invention has other features and will be more fully explained by reference to the accompanying drawing in which Fig. 1 is a perspective view constructed in accordance with one feature of my invention; Fig.

2 is a sectional view taken on line 2-2 of Fig. l; Fig. 3 is a sectional view taken at right angles to the direction in which Fig. 2 is talren; Fig. a is a sectional view talren on line l-i of Fig 3; Fig. 5 is a sectional view similar to Fig. 2 but prior to the final heading yof the rivet; and Fig.l 6 is a perspective view illustrative of a number of parts of the condenser in separated relation.

The insulating supporting member of the `condenijer is preferably in the form of circular plate l having a rim 2 which is angular to the body of the plate l and eX- tending away from the plate in one direction and another angular rim 3 'extending away from theplate in an opposite direcn tion. A clamping rivet is provided whose shank` t extends through the circular plate l and is coaxial therewith. The circular metallic condenser plates 5 and 6 are formed with openings at their centers through which the rivet shanlr freely passes with wide clearance. The dielectrichetween the plates isin the form of a thin circular sheet 7 of suitable material and of such dia-meter as to very closely approach the inner cylindrical surface of the rim 2. The metallic condenser plates are formed each with a plurality of projections 8, there desirably being three equidistant projections upon each metallic plate. Each metallic' condenser plate is also desirably additionally pro-- vided with an extension 9 projecting through an opening l0 that is formed in the rim. The extensions 9 arespaced apart and are desirably formed with openings l1 for the reception of mounting screws and perforated ears l2 to which circuit wires may be soldered. The metallic condenser plates are similarly formed but are oppositely arranged with the ears l2 upon a line passing through the axis of the condenser whereby these ears serve as a guide to the assembler in placing the parts together. The eXtension 9 u aon each metallic condenser plate is disposed between two projections 8 and is nearer one of these projections than thev other so that when the similarly formed metallic condenser plates are arranged as illustrated, thel projections 8 upon either plate will be staggered with relation to such projections upon the other plate. The dielectric 7 is of such diameter that its border extends beyond the portions of the borders between the projections 8 of the metallic plates, the projections, in conjunction with the rim Q, preventing the intervening portions of the metallic plates from extending beyond the dielectric which thus serves to prevent any burrs or other portions upon the border of either metallic plate from contacting with the other metallic plate.

When the parts have been assembled in the relaticnillustrated and described, an inl sulating closure disc 13 is inserted within the rim 2, this closure disc having projections 14 which are received in the openings 10 in the rim 2. The rivet head 15 is desirably ,supplemented by a metallic disc 16 through which the shank of the rivet snugly passes and which is snugly received within the rim 3. The rivet, at its other end, is surrounded by a metallic disc 17. When the rivet is headed at 18 to clamp the parts together, the disc 17, which is Islightly crowned, is firmly clamped against the insulating closure 13, the clamping pressure exerted by the disc 17, in being flattened, firmly securing all of the plates and discs of the condenser in iirm mechanical relation.

Having thus described my invention, I claim:

l. An electrostatic condenser including an insulating member formed with an angular rim; two metallic condenser plates assembled with said insulating member and disposed within said rim and each formed with a plurality of projections extending toward said rim and relatively positioned to prevent the portions of the plate therebetween from contacting with said rim; and a dielectric disposed between said plates and extending beyond the aforesaid portions of the plates.

2. An electrostatic condenser including an insulating member formed with an angular rim; two metallic condenserV plates assembled with said insulating member and disposed within said rim and each formed with a plurality of projections extending toward said rim and relatively positioned to prevent the portions of the plate therebetween from contacting with said rim; and a dielectric disposed between said plates and extending beyond the aforesaid portions of the plates, the projections upon each plate being in staggered relation to the projections upon the other.

3. An electrostatic condenser including an insulating member formed with an angular rim; two metallic condenser plates assembled with said insulating member and disposed within `said rim and each formed with a plurality of projections extending toward said rim and relatively positioned to prevent the portions of the plate therebetween from contacting with said rim; and a dielectric disposed between said plates and extending beyond the aforesaid portions ofthe plates, the projections upon each plate being in staggered relation to the projections upon the other, said rim having spaced apart openings therein and said plates having extensions projecting through said openings and engaging .said rim to preserve the staggered relation of the projections upon the plates.

4. An electrostatic condenser including an insulating member having an abutment; two metallic condenser plates assembled with said insulating member and each formed with a plurality of projections extending toward said abutment and relatively positioned to prevent the portions of the plate therebe` tween from contacting with said abutment;

and a dielectric disposed between said plates and extending beyond the aforesaid portions of the plates.

5. An electrostatic condenser including an insulating member having an abutment; two metallic condenser plates assembled with said insulating member and each formed with a plurality of projections extending toward said abutment and relatively positioned to prevent the portions of the plate therebetween from contacting with said abutment; and a dielectric disposed between said plates and extending beyond the aforesaid portions ofk the plates, the projections upon each plate being' in ystaggered relation to the projections upon the other.

6. An electrostatic condenser including an insulating member having an abutment formation, and two metallic condenser plates assembled with said insulating member and each formed with projections extending toward said abutment formation and positioned to prevent the portions of the plate therebetween from contacting with said abutment formation. y

In witness whereof, I hereunto subscribe my name.

ERNEST E. YAXLEY.