US1563893A - Multiple variable condenser - Google Patents

Multiple variable condenser Download PDF

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US1563893A
US1563893A US58635A US5863525A US1563893A US 1563893 A US1563893 A US 1563893A US 58635 A US58635 A US 58635A US 5863525 A US5863525 A US 5863525A US 1563893 A US1563893 A US 1563893A
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plates
sets
stator
stator plates
condenser
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US58635A
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Cohen Samuel
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Arris Technology Inc
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Arris Technology Inc
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G5/00Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
    • H01G5/38Multiple capacitors, e.g. ganged

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  • NEW YORK ASSIGNOR T GENERAL INSTRMENT coRronA'rroN or NEW YORK.
  • the object of my invention is to provide a multiple variable condenser construction in which a plurality of sets of rotor and stator plates are arranged within a. commonframe, with the sets of rotor plates mounted upon a central shaft and arranged to-interleave with the sets of stator plates, 'with means for insulating one group of stator plates from an adjacent .group of statorV plates by insulators extendmg between the condenser frame and the sets of stator, plates where the insulators are laterally positioned in the frame and in lines substantially parallel to planes passing through 'the stator plates.
  • Figure 1 is a perspective view of one con'- struction of my, ⁇ multiple variable condenser
  • Fig. 2 showssa front view of the multiple variable condenser construction illustrated in Fig. 1
  • Fig. 3 is an end view 'of the multiple condenser structure of Fig. 2
  • Fig. '4 is a sectional view through the multiple variable condenser taken on line 4-4 of Fig-2
  • Fig. 5 is a front view of a modified form of multiple yariable condenser conp structed in accordance with my invention and showing the independent sets of. stator plates supported by insulation material under compression
  • Fig. 6 isa side view of the multiple variable condenser illustrated '1n No. 15,516, led March 14,V
  • FIG. 5 showing the arrangement of the sets of rotorV plates on the centralrotatable shaft for balancing the sets of plates throughout the distance of rotation thereof;
  • FIG. 7 is a cross sectional view taken online 7.7 of Fig. 5 through the balanced condenser construction illustrated in Fig. 5;
  • Fig. 8 is a detail view showing one method of supporting the stator. plates by pedestal insulators;
  • Fig. 9 is a fragmentary view illustrating a modified method of supporting the inde endent sets of stator plates on quartz insu ators interposed between the sets of stator plates p and the frame of the multiple variable condenser;
  • Fig. 10 iS an enlarged cross sectional view taken through one of the supporting frame members of the variable condenser in which the insulating members are secured.
  • My present invention utilizes some of the principles set forth in my co-pending application for ⁇ Letters Patent of the' United States entitledVariable condenser, iled No- Y vember 8, 1924 and identiied by Serial No. 748,708.
  • My compact variable condenser, unit including present invention provides a a condenser frame and a plurality of independent stator units which are substantially insulated from the condenser frame and from each other in the frame under compression.
  • the rotor by insulators securedv plates are positioned vupon a central shaft journaled -in the condenser frame and may be interleaved with the independent sets ofy stator plates in such manner that the con-y denser is mechanically balanced so that the rotor plates may be moved with precision and accurately adjusted in capacity, whlch capacity is accurately maintained for any desired period of time.
  • the condenser frame and the sets ofistator plates form a substantial unit by reason of a double pedestal mounting sltuated at opposite ends of thel stator plates.
  • the overall dimensions of the condenser unit may be relatively small and ts conveniently within a radio receiver f or the control of a multiple numbe-rof circuits therein.
  • reference character l designates one and 11.
  • reference character 2 designates an opposite end frame for thg condenser, connected by frame members 3, 4, 5, 6 and 7.
  • the end frame members 1 and 2 are provided with eX- tended portions at opposite sides which are bridged by the strip-like members 8, 9, 10, Between the strip-like members 8 and lOthere is secured under compression alternate conductive blocks 12, 14 and 15, and pedestal insulators 16, 17, 18 and 19. Between the strip-like members 9 and 11 there is interposed under compression alternate conductive blocks 20, 21 and .22, and pedestal insulators 23, 24, 25 and 26.
  • the blocks 12, 14, 15, 20, 21 and 22 are grooved as represented atk 27 to receive opposite ends of the sets of stator plates 28, 29 and 30.
  • each of the blocks enables the stator plates to be rigidly secured in spaced relationship.l
  • the spacing of the sets of stator plates is such that the pedestal insulators fully protect one set ot' stator plates against potentials existing across the circuits including the other sets of stator plates.
  • the rotorplates are disposed in sets designated at 31, 32 and 33 upon a central shaft 34 journaled at 35 -in the end plate 1 and at 36 in the opposite end plate 2.
  • the rotor plates may be simultaneously interleaved with the separate sets of stator plates as has been more clearly represented 1n Fig. 1 of the drawings.
  • the rotation of the central shaft 34 is governed by the end spring member 37 and connection to all of the stator plates may be made from any part of the grounded frame.
  • the set of stator plates are positioned alternately along -the condenser' frame as illustrated in Fig. 6, that is, the stator plates 28 are rigidly positioned at one side of the condenser frame between vconductive blocks 12 and 20.
  • the stator plates 29A are positioned at the opposite side of the ⁇ condenser frame between conductive blocks 14 and 21.
  • the sets of stator plates 30 are positioned on the op-. posite side of the condenser frame from stator plates 29, and on the same side with stator plates 28'.
  • stator plates 30 are secured, in position between conductive blocks 15 and 22 under compression and supported upon insulators as hereinbetore described
  • Other sets of stator plates 51 and 53 are mounted in the condenser frame on the same side as that on which stator plates 29 are mounted, and between conductive blocks 45 and 46, and 49 and 50 respectively, while a set oi stator plates 52 is mounted on the opposite side of the lcondenser frame between conductive blocks 47 and 48.
  • the central shaft 34 is journaled at opposite ends at 35 and 36 and carries sets of rdtor plates designated at 31,32, 33, 54, 55, and.56, which cooperate with the hereinbefore referred to independent sets of stator plates.
  • stator plates are so arranged that when the mutual capacity between one set of rotor and stator plates is decreasing the mutual 'capacity hetween another set of rotor plates and stator plates is increasing.
  • the fact that the sets of stator plates are independent one from the other enables the stator plates to be 'connected in a variety of electrical circuits
  • a multiple variable condenser comprising in combination a pair of end plates, frame members interconnecting said end plates, a plurality' ofv independent sets of stator plates, conductive blocksy supporting said stator plates in spaced relationship one a vfrom another, insulators interposed between said conductive blocks and said frame members whereby said statorv plates may be positively supported in spaced relationship in a group independent from another group of stator plates within said frame members, aicentral rotatable shaft journaled in said end plates, sets of rotor plates carried by said rotatable shaft and adapted to be interleaved between said stator latesI for varying the capacity between sald sets of plates simultaneously upon rotation of said central shaft.
  • a multiple variable condenser coinprising in combination a pair of end plates
  • frame members interconnectin said end plat-es, a plurality of indepen ent sets'of stator plates, grooved conductive blocks adapted to receive opposite ends of said stator plates and support said stator plates in 'spaced relationship, insulators interposed between said conductive blocks and said frame members adjacent opposite ends 'of said stator plates and in a line parallel to a 'plane passing through said stator plates, a central rotatable shaft journaled in said end plates, sets of rotor plates carried by said rotatable shaft and adapted to be interleaved between said stator plates for varying the capacity between said sets of plates simultaneously upon rotation of said central shaft.
  • a multiple variable condenser comprisiig in combination a pairy of endvplates, frame members interconnecting said end plates, a plurality of independent sets of stator plates.
  • conductive blocks supporting said stator plates in spaced relationship one from another, al pair of insulators interposed between said conductive blocks at opposite ends of said stator plates and said frame members for rigidly supporting said stator plates within said frame members, a central rotatable Ishaft journaled in said end plates, sets of rotor plates carried by said rotatable shaft and adapted to be interleaved between said stator plates for varying the capacity between said sets of plates simultaneously upon rotation of said central shaft.
  • a multiple variable condenser comprising in combination a pair of end plates, frame member interconnecting opposite ends of .said end plates, lconductive blocks carried by oppositely positioned .frame members for securing' groups of stator plates therebetween, with said groups of stator .plates alternately positioned along the length of said frame members, insulators interposed between Said conductive blocks. and said frame members and secured under compression in planes parallel with the planes of said stator plates, a central rotatable shaft journaled in said end plates, groups of rotor plates carried by said central shaft and arranged to be interleaved with said groups of stator plates for simultaneously varying the mutual capacity between said sets of plates.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Induction Machinery (AREA)

Description

Dec. 1i 1925.
s. COHEN MULTIPLE VARIABLE CONDENSER Original Filed March 14, 1925 4 Sheets-Shea?I 1 @a l, l;
Dec. 1, 1925. 1,563,893
S. COHEN MULTIPLE VARIABLE CONDENSER original Filed March 14. 1925 4 sheets-sheet 2 I INVENTOR Haifa/@ (y0/26W,
Dec. 1 I 1925. 1,563,893
' S. COHEN MULTIPLE VARIABLE CONDENSER Original Filed March 14, 1925 4 Sheets-Sheetl 5 mvtujron Aga/aff y0/IPH.
Dec, 1, 1925. 1,563,893
. S. COHEN MULTIPLE VARIABLE CONDENSER Original Filed. MarGh 14, 1925 4 Sheets-Sheet 4 Patented Dee 1,1925.
SAMUEL COHEN, OF BROOKLYN,
CORPORATION, orY NEW YORK,- N.' Y., A
NEW YORK, ASSIGNOR T GENERAL INSTRMENT coRronA'rroN or NEW YORK.
MULTIPLE VARIABLE' coNDENsEn. l
Qriginal application led March 14, 1925, Serial No. 15,516. Divided and this -application filed September f 25, 1925. Serial to.v 58,635.
The object of my invention is to provide a multiple variable condenser construction in which a plurality of sets of rotor and stator plates are arranged within a. commonframe, with the sets of rotor plates mounted upon a central shaft and arranged to-interleave with the sets of stator plates, 'with means for insulating one group of stator plates from an adjacent .group of statorV plates by insulators extendmg between the condenser frame and the sets of stator, plates where the insulators are laterally positioned in the frame and in lines substantially parallel to planes passing through 'the stator plates.
The broad subject matter of my invention is more particularly set forth in my copending application for Letters Patent Serial No. 15,516, tiled March 14, 1925.
Other and further objects of my invention will be understood from the specification hereinafter following by reference to the accompanying drawings, wherein:
Figure 1 is a perspective view of one con'- struction of my,` multiple variable condenser; Fig. 2 showssa front view of the multiple variable condenser construction illustrated in Fig. 1; Fig. 3 is an end view 'of the multiple condenser structure of Fig. 2; Fig. '4 is a sectional view through the multiple variable condenser taken on line 4-4 of Fig-2; Fig. 5 is a front view of a modified form of multiple yariable condenser conp structed in accordance with my invention and showing the independent sets of. stator plates supported by insulation material under compression; Fig. 6 isa side view of the multiple variable condenser illustrated '1n No. 15,516, led March 14,V
Fig. 5 showing the arrangement of the sets of rotorV plates on the centralrotatable shaft for balancing the sets of plates throughout the distance of rotation thereof; Fig. 7 is a cross sectional view taken online 7.7 of Fig. 5 through the balanced condenser construction illustrated in Fig. 5; Fig. 8 is a detail view showing one method of supporting the stator. plates by pedestal insulators; Fig. 9 is a fragmentary view illustrating a modified method of supporting the inde endent sets of stator plates on quartz insu ators interposed between the sets of stator plates p and the frame of the multiple variable condenser; and Fig. 10 iS an enlarged cross sectional view taken through one of the supporting frame members of the variable condenser in which the insulating members are secured. v
My present invention utilizes some of the principles set forth in my co-pending application for` Letters Patent of the' United States entitledVariable condenser, iled No- Y vember 8, 1924 and identiied by Serial No. 748,708. My compact variable condenser, unit including present invention provides a a condenser frame and a plurality of independent stator units which are substantially insulated from the condenser frame and from each other in the frame under compression. The rotor by insulators securedv plates are positioned vupon a central shaft journaled -in the condenser frame and may be interleaved with the independent sets ofy stator plates in such manner that the con-y denser is mechanically balanced so that the rotor plates may be moved with precision and accurately adjusted in capacity, whlch capacity is accurately maintained for any desired period of time. The condenser frame and the sets ofistator plates form a substantial unit by reason of a double pedestal mounting sltuated at opposite ends of thel stator plates. The overall dimensions of the condenser unit may be relatively small and ts conveniently within a radio receiver f or the control of a multiple numbe-rof circuits therein.
lates upon the ,central such that the movement of the shaft 1s balanced in such manner that for different de? ees of rotation of the shaft and variation 1n capacity between the sets of plates, precision adjustment of the instrument 1s possi# The arrangement of the 'rotor rotatable shaft' '1s ble with the. accurate maintenence of the `capacity se selected.
Referring more particularly to the drawings, reference character l designates one and 11.
end frame of the condenser, while reference character 2 designates an opposite end frame for thg condenser, connected by frame members 3, 4, 5, 6 and 7. The end frame members 1 and 2 are provided with eX- tended portions at opposite sides which are bridged by the strip- like members 8, 9, 10, Between the strip-like members 8 and lOthere is secured under compression alternate conductive blocks 12, 14 and 15, and pedestal insulators 16, 17, 18 and 19. Between the strip-like members 9 and 11 there is interposed under compression alternate conductive blocks 20, 21 and .22, and pedestal insulators 23, 24, 25 and 26. The blocks 12, 14, 15, 20, 21 and 22 are grooved as represented atk 27 to receive opposite ends of the sets of stator plates 28, 29 and 30.
vThe slotting of each of the blocks enables the stator plates to be rigidly secured in spaced relationship.l The spacing of the sets of stator plates is such that the pedestal insulators fully protect one set ot' stator plates against potentials existing across the circuits including the other sets of stator plates. The rotorplates are disposed in sets designated at 31, 32 and 33 upon a central shaft 34 journaled at 35 -in the end plate 1 and at 36 in the opposite end plate 2. The rotor plates may be simultaneously interleaved with the separate sets of stator plates as has been more clearly represented 1n Fig. 1 of the drawings. The rotation of the central shaft 34 is governed by the end spring member 37 and connection to all of the stator plates may be made from any part of the grounded frame. Independent connections may be taken from the separate sets of stator plates 28, 29 and 30 from the lugs designated at 38, 39 and 40. In t-he condenser construction illustrated in Figs. 5 to 10 the end plates 1 and 2 are connected bylongitudinally extending frame members 3, 4, 5 and 6 and pairs of bars 41, 42, 43 and 44. lAt intervals along the length ot the bars, the bars are drilled as represented at 58 in Fig. 10 and countersunk on each side'thereof as represented at 59 and 60. In one of the countersunk portions the ends of porcelain insulators 61 or quartz insulators 62,` as designated in Figs. 8 and 9 respectively are secured. In the case ot edestal insulators of porcelain,these insuators are molded with a vbore extending through the center with internal screw threads toy receive a machine screw 63, the head of which may be positioned flush with the surface of the supporting bar by'itting within the countersunk portion 59. The location of the bore internally of the pedestal insulator increases the surface area 'pedestal insulators 61 or the quartz insulator 62 enter a cup shaped device 64 which is secured by screw 65 to the rear face et the conductive block 21. A pair et' insulators are thus positioned at opposite ends 0f the stator plates in such manner that sets of statorv plates are rigidly secured in position and the plates positively spaced apart. The set of stator plates are positioned alternately along -the condenser' frame as illustrated in Fig. 6, that is, the stator plates 28 are rigidly positioned at one side of the condenser frame between vconductive blocks 12 and 20. The stator plates 29A are positioned at the opposite side of the` condenser frame between conductive blocks 14 and 21. Similarly, the sets of stator plates 30 are positioned on the op-. posite side of the condenser frame from stator plates 29, and on the same side with stator plates 28'. The stator plates 30 are secured, in position between conductive blocks 15 and 22 under compression and supported upon insulators as hereinbetore described Other sets of stator plates 51 and 53 are mounted in the condenser frame on the same side as that on which stator plates 29 are mounted, and between conductive blocks 45 and 46, and 49 and 50 respectively, while a set oi stator plates 52 is mounted on the opposite side of the lcondenser frame between conductive blocks 47 and 48. The central shaft 34 is journaled at opposite ends at 35 and 36 and carries sets of rdtor plates designated at 31,32, 33, 54, 55, and.56, which cooperate with the hereinbefore referred to independent sets of stator plates. By the arrangement of the rotor plates on the central shaft 34, I provide a condenser which is self-balancing and whichl does not-require the use et weights for maintaining the position of the rotor plates. The provision of a pair of insulating members at opposite ends of the stator plates insures the plates against twisting and thereby provides a substantial condenser construction.
It will be observed that the rotor plates are so arranged that when the mutual capacity between one set of rotor and stator plates is decreasing the mutual 'capacity hetween another set of rotor plates and stator plates is increasing. The fact that the sets of stator plates are independent one from the other enables the stator plates to be 'connected in a variety of electrical circuits,
but my invention finds particular applicathe scope of the appended claims.
IVhat I claim and desire to secure by Letters Patent of the United States is as follows l. A multiple variable condenser coinprising in combination a pair of end-plates,
frame members interconnecting 'said end plates, a plurality of independent sets of stator plates, insulation means interposed between said frame members and each ot' said sets of stator plates, whereby one set of said stator plates is substantially insulated from another set of said stator plates, a shaft journaled in said end plates, sets of rotor plates carried by said shaft and arranged to be interleaved between said sets of stator plates whereby the mutual capacity between said sets of plates may be simultaneously varied by rotation of said central shaft. i f
2. A multiple variable condenser comprising in combination a pair of end plates, frame members interconnecting said end plates, a plurality' ofv independent sets of stator plates, conductive blocksy supporting said stator plates in spaced relationship one a vfrom another, insulators interposed between said conductive blocks and said frame members whereby said statorv plates may be positively supported in spaced relationship in a group independent from another group of stator plates within said frame members, aicentral rotatable shaft journaled in said end plates, sets of rotor plates carried by said rotatable shaft and adapted to be interleaved between said stator latesI for varying the capacity between sald sets of plates simultaneously upon rotation of said central shaft.
A multiple variable condenser, coinprising in combination a pair of end plates,
frame members interconnectin said end plat-es, a plurality of indepen ent sets'of stator plates, grooved conductive blocks adapted to receive opposite ends of said stator plates and support said stator plates in 'spaced relationship, insulators interposed between said conductive blocks and said frame members adjacent opposite ends 'of said stator plates and in a line parallel to a 'plane passing through said stator plates, a central rotatable shaft journaled in said end plates, sets of rotor plates carried by said rotatable shaft and adapted to be interleaved between said stator plates for varying the capacity between said sets of plates simultaneously upon rotation of said central shaft.
4. A multiple variable condenser comprisiig in combination a pairy of endvplates, frame members interconnecting said end plates, a plurality of independent sets of stator plates. conductive blocks supporting said stator plates in spaced relationship one from another, al pair of insulators interposed between said conductive blocks at opposite ends of said stator plates and said frame members for rigidly supporting said stator plates within said frame members, a central rotatable Ishaft journaled in said end plates, sets of rotor plates carried by said rotatable shaft and adapted to be interleaved between said stator plates for varying the capacity between said sets of plates simultaneously upon rotation of said central shaft.
5. A multiple variable condenser comprising in combination a pair of end plates, frame member interconnecting opposite ends of .said end plates, lconductive blocks carried by oppositely positioned .frame members for securing' groups of stator plates therebetween, with said groups of stator .plates alternately positioned along the length of said frame members, insulators interposed between Said conductive blocks. and said frame members and secured under compression in planes parallel with the planes of said stator plates, a central rotatable shaft journaled in said end plates, groups of rotor plates carried by said central shaft and arranged to be interleaved with said groups of stator plates for simultaneously varying the mutual capacity between said sets of plates. i' SAMUE L COHEN.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751560A (en) * 1953-03-16 1956-06-19 Lavoie Lab Inc High frequency capacitator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751560A (en) * 1953-03-16 1956-06-19 Lavoie Lab Inc High frequency capacitator

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