US1444534A

US1444534A - Electrical condenser

Info

Publication number: US1444534A
Application number: US217441A
Authority: US
Inventors: Ames Butler; Philip J Gilinson
Original assignee: Ames Co Inc
Current assignee: Ames Co Inc
Priority date: 1918-02-15
Filing date: 1918-02-15
Publication date: 1923-02-06
Anticipated expiration: 1940-02-06

Description

Feb. 6', 1923. 1,44%,534

B. AMEs ET AL ELECTRICAL CONDENSER Filed Feb. 15 1918 %%Z/@ZAM Patented Feb. 6, 1923.

UNITED STATES PATENT OFFICE.

BUTLER AMES AND PHILIP J. GILINSON, OF LOWELL, MASSACHUSETTS; SAID GILINSON ASSIGNOR TO SAID AMES.

ELECTRICAL CONDENSER.

Application filed February 15, 1918. erial No. 217,441.

To all whom it may concern:

lie it known that we, BUTLER AMES and PHILIP J. GILINsoN, both citizens of the United States, and residents of Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented new and useful Improvements in Electrical Condensers, of which the following is a specification.

This invention relates to electrical condensers and has for its object a condenser which is simple to construct, which is compact in form, which can be tightly compressed to expel any air trapped therein,

which will fit into a magneto rotor or other restricted space, which has a. large area of contact between the layers of conducting material and the terminals, whose layers of insulating material are symmetrical and imperforate, whose layers of conducting material are imperforate and formable from a band or ribbon of material, whose parts are secured together by means not extending through the alternate layers of insulating and conducting material, and which is of generally improved construction.

of the above objects are attained in the preferred embodiment of our invention it is to be understood that certain of these objects may be attained independently in so far as certain aspects of the invention are concerned;

According to the. present invention the layers of insulati g material are preferably of substantially s uare formation while the layers of conducting material are somewhat longer and somewhat more narrow than the insulating sheets so that a conducting sheet placed centrally upon an insulating sheet will project beyond the insulating sheet at its opposite ends but will be confined within the limits of the insulating sheet at its sides. In building up the condenser layers the alternate layers of conducting material are disposed at right angles to each other so that every other layer of conducting material projects from one pair of opposite sides of the insulating sheets and the intermediate layers of conducting material project from the other pair of opposite sides of the insulating sheets. The ing ends of each set of conducting sheets are utilized to connect the sheets to terminal plates or other suitable termi- While all proj ectnals, as by folding the projecting ends over each other and soldering them to the terminals, and both ends of each sheet are preferably connected to a terminal so that the current may surge fto and from the conducting sheets more rapidly. The alternate conducting and insulating sheets are preferably compressed between two plates, which may be the terminal plates, and the plates are preferably connected together by suitable means disposed in the four corners between the projecting ends of the conduct- 1ng sheets.

In the accompanying drawings,

Figure l is an end view of a device embodying our invention;

Figure 2 is an end View of the device showing the opposite end;

Figure 3 is a side elevation of the device;

Figure 4 is a central section on line 4-4 of Fig. 1;.

Figure 5 is a section on line 5-5 of Fig. 3;

Figure 6 is a perspective view of the device; and

Figure 7 is aperspective view of the interior portion of a modified device embodying our invention.

The device illustrated in Figs. 1 to 6 essentially comprises a body portion 1 made up of alternate layers of insulating and conducting material,

end plates

2 and 3 disposed at opposite ends of the body portion, and rivets 4 for securing the end plates together.

The insulating layers of the body portion are in the form of square sheets 5 having their corners cut off as shown at 6 in Fig. 5. The conducting layers are in the form of oblong sheets alternate ones of which are disposed at right angle to each so as to form two sets of conducting sheets 7 andB angularly displaced from each other 90 as indicated in Fig. 5. The conducting sheets extend somewhat beyond the opposite sides of the insulating sheets and at each side are folded over each other and pressed together with a hot iron or otherwise connected together as indicated at 9, 9, 10 and 10 in Figs. 3 to (3. lVhile these are the preferred shapes of the insulating and conducting sheets it is be understood that the shapes may be varied within the scope of the invention in its broader aspect so long as the conducting layers project from different sides of the condenser so as to be united together.

The

end plates

2 and 3 are insulated from the body portion 1 by layers of insulation 11 and 12 and the rivets 4 are insulated from the end plate 2 by insulating washers 13 and bushings 13: Extending from plate 2 along one pair of opposite sides of the condenser are two

flanges

14 and 14, these flanges contacting respectively with the ends of the set 7 of conducting sheets; and extending from plate 3 along the other pair of opposite sides of the condenser are two flanges 15 and 16. these flanges contacting respectively with the ends of the set 8 of conducting sheets. A film of solder is preferably flowed in between each of these flanges and the corresponding set of ends of the conducting sheets to insure a perfect contact between each end of each conducting sheet and one of the end plates. When the end plates are utilized as terminal plates they are provided with

terminal lugs

17 and 18, respectively, to which circuit leads may be connected. i

Lugs

19 and 20, extending outwardly from the flanges 15 and 1b of plate 3, serve to mount the condenser as shown for example in the application of Butler Ames, Sr. No. 21?,168, filed on even date herewith. The plate 2 is provided with a tubular projection 21 extending outwardly from the center thereof, the projection being tapped to receive a screw for attaching the condenser to other apparatus as disclosed for example in said copending application.

In Figure 7 we have illustrated a modification in which the body portion 1 of the condenser is bound together by two

bands

22 and 23 of copperor other conducting material, after which it may be employed thus or between end plates as above described. The

bands

22 and 23 are insulated from each other by insulation sheets 24, from the conducting layers, except at the ends 9 and 10. by insulation sheets 25 similar to sheet 5 in Fig. 5. Theends of the bands are lapped as shown, preferably on the same side of the body 1.

The preferred method of constructing the body portion of our improved condenser is as follows: The layers of conducting

mate rial

7 and 8 are preferably supplied in the form of a ribbon, lengths of the ribbon sufiicient to form the sheets being cut off as the condenser is built up. Two separate spools of ribbon may be employed, the two spools being respectively mounted near adjacent sides of the condenser or near adjacent sides of a frame having four corner posts spaced the same as .posts 1, in either case of which the set of sheets 7 is obtained from one spool and the set 8 from the other spool. However, it is deemed preferable to employ a single spool .and mount the condenser or assembling frame to oscillate back and forth about its axis through an angle of 90' so that a sheet 7 may be applied when in one extreme position and a sheet 8 when in the opposite position. i

From the foregoing description read in connection with the accompanying drawings the advantages of our improved construction will be apparent. The disposition of the oblong conducting sheets between the four corner posts renders the construction of the apparatus simple and facile.

plates serve to enclose and protect the body portion. to afford a conductin path between the conducting layers and end plates and to carry the terminal connectors. And by virtue of the conducting path between each end of each conducting sheet and the corresponding terminal plate throughout the entire width of the sheet the-condenser may charge and discharge more rapidly and efficiently.

We claim:

1. An electrical condenser comprising alternate layers of conducting and insulating material, the layers of conducting 'material being somewhat longer than wide and alternate layers of the conducting material being disposed transversely of each other so as to project laterally on each side, and means disposed at least in part in the corners between the projecting ends for holding the layers together.

2. An electrical condenser of the type having a plurality of plates separated by a dielectric, the condenser being characterized in that the plates have projections extending outwardly from the sides thereof. the projections from certain plates at recurrent intervals extending from one side of the condenser and the projections from certain other plates at recurrent intervals extending from another side of the condenser. and end members extending substantially across the condenser along the ends thereof parallel to said layers, one of the end members being connected to said'projeetions at one side of the condenser and the other end member being connected to said projections on the other side of the condenser.

3. An electrical condenser; comprising alternate sheets of insulatlng and conductlng l1l21tl'ltll, tll alternate conducting sheets alternate sheets of insulating and conducting material, the conducting sheets being divided into two sets respectively comprising alternate sheets of the conducting material, one set of conducting sheets extending beyond one pair of opposite sides of the insulating sheets and the other set of conducting sheets extending beyond the other pair of opposite 1 sides of the insulating sheets, and a terminal member contacting with the opposite ends of each set of conducting sheets.

5. An electrical condenser comprising alternate sheets of insulating and conducting material, the conducting sheets being divided into two sets respectively comprising alternate sheets of-the conducting material, one set of conducting sheets projecting beyond one pair of opposite sides of the insulating sheets and the other set of conducting sheets projecting beyond the other pair of opposite sides of the insulating sheets, the projecting portions of each set of conducting sheets being folded over at each end, and a I terminal member extending across the end ing material, the insulating sheets having' of the condenser and contacting with the folded portions of each set at both ends.

6. An electrical condenser comprising alternate sheets of insulating and conducting material, the conducting sheets being divided into two sets respectively comprising alternate sheets of the conducting material, one set of conducting sheets extending beyond one pair of opposite sides of the insulating sheets and the other set of conducting sheets extending beyond the other pair of opposite sides of the insulating sheets. and end members having opposed portions extending along said pairs of sides respectively in electrical contact with the opposite ends of each set of conducting sheets.

7 An electrical condenser comprising alternate sheets of insulating and conducting material, the conducting sheets being divided into two sets respectively comprising alternate sheets of the conducting material, one set of conducting sheets projecting beyond one pair of opposite sides of the insulating sheets and the other set of conducting sheets projecting beyond. the other pair of opposite sidesof the insulating sheets, and means disposed in the corners between the projecting ends of the respective sets of conducting sheets for securing said end members together.

8. An electrical condenser comprising alternate sheets of insulating and conductsubstantially the same width as length.

the conducting sheets being somewhat longer and narrower than the insulating sheets. and the alternate conducting sheets being disposed transversely of each other and ex tending beyond the edges of the insulating sheets, and end plates having flanges extending into contact with the alternate sets of said edges respectively, the flange of one plate contacting with one set and the flange of the other plate contacting with the other set.

9. An electrical condenser comprising substantially square sheets of insulating ma terial, oblong sheets of conducting material, the latter sheets being longer and narrower than the former sheets and being alternately disposed transversely of each other with their opposite ends projecting beyond the opposite edges of the insulating layers, end plates disposed on opposite sides of said sheets, each end plate having portions on opposite sides thereof contacting with said projecting ends of certain of the conducting sheets, and posts for securing said end plates together, the corners of the insulating sheets being cut away and said posts being disposed in the cut-away corners between the projecting ends of the conducting sheets.

10. An electrical condenser comprising a lternate sheets of insulating and conducting material, the conducting sheets being longer and narrower than the insulating sheets and being alternately arranged transversely of each other soas .to form two angularly spaced sets of sheets, the ends of one set of sheets projecting from .one pair of opposite sides of the condenser and the ends of the other set of sheets projecting from the other pair of opposite sides of the condenser, a body of conducting material disposed around sait alternate sheets in electrical contact with the opposite ends of one set of sheets, and a second body of conducting material disposed around said alternate sheets in electrical contact with the opposite ends of the other set of sheets.

11. An electrical condenser comprising alternate sheets of insulating and conducting material, the conducting sheets being divided into two sets respectively comprising alternate sheets of the conducting material, one set of conducting sheets projecting beyond one side of the insulating sheets and the other set of conducting sheets projecting beyond another side of the insulating sheets. and end plates disposed at opposite ends of said sheets in planes substantially parallel with the planes of the sheets, said end plates having flanges extending along said sides in electrical contact with the projecting ends of said sets respectively.

12. An electrical condenser comprising sheets of conducting material, sheets of insulating material interposed between the conducting sheets, and a. stiff end clamping plate of conducting material disposed in a plane substantially parallel with the planes of said sheets, the ends of alternate conducting sheets extending beyond the edges of the insulating sheets into electrical contact'with said clamping plate.

13. An electrical condenser comprising sheets of conducting material, sheets of insulating material interposed between the conducting sheets, and a stiff end clamping plate of conducting material disposed in a plane substantially parallel with the planes of said sheets, the ends of alternate conducting sheets extending beyond the edges of the insulating sheets and being soldered directly to said end plate,

14. An electrical condenser comprising sheets of conducting material, sheets of insulating mate-rial interposed between the conducting sheets, and a stiff end plate of conducting material disposed in a plane substantially parallel with the planes of said sheets, said end plate having a-fiange extending along the edges of said sheets at one side of the condenser in electrical contact with recurrent sheets of conducting material.

Signed by BUTLER AMns at Boston, Mass, this 5th day of February, 1918, and by PHILIP GimNsoN, at Lowell, Mass, this 5th day of February. 1918.

BUTLER AMES, PHILIP J. GILINSON.