US1704845A - Variable condenser - Google Patents

Description

March 12, 1929. J. w. STORER VARIABLE CONDENSER Filed Nov. 5, 1925 %M anvemtoz Patented M'ai.- 12, 1929.

UNITED STATES JOSEPH WM. STORER, OF NEW YORK,

VARIABLE CONDENSER.

Application filed November This invention relates to variable condensers, and more especially to the class wherein a frame supports a plurality of stator plates and a corresponding rotor unit is mounted on a carriage pivoted to the stator frame, While 5, 1925. Serial No. 66,992. 1

bar 12 serves to counterbalancethe weight of shaft consist of a crank 9 is secured to shaft a pair oflinks connect the rotor and the rotor 8 and a corresponding crank 5 secured to carriage with a crank mounted on a control dial shaft.

.The main object of my invention is to provide a variable condenser which has extreme ranges of capacity, and moreover, which is of simple, eflicient and inexpensive construction.

In the accompanying drawing forming part of this specification Fig. 1 is a perspective view of an apparatus embodying the novel features of my invention. i

Fig. 2 is a side view of the same apparatus when the rotor has been partly raised.

Fig. 3 is a similar view when the parts are in extreme raised position.

Fig. 4 is'a view of a stator plate and a rotor plate as relatively spaced when the condenser occupies the position of Fig. 3.

In the art of controlling radiant energy, it is often desirable to condensers which have very extreme ranges of capacity, that is, which have great capacity in one normal position of the parts, and a very low capacity value atthe extreme opposite position of the same parts. This necessitates in the last position, a very great spacing between the stator and rotor plates. In order to accomplish this,

, the present invention is designed. Incidentally, several advantages will become apparent as this specification proceeds.

In the practice of my invention. a pair of frame sides 1 and 2, made of any rigid material such as metal or bakelite are fastened together by means'of three tie rods 16, 17 and 18, and a group of stator plates 13, 13 clamped in spaced relation therebetween. Each of the stator plates has a set of lugs 22123 and 24 which correspond with the tie rods 16, 17 and 18, respectively. Upon the mentioned frame side 1, is secured a bearing 10 for the,

dial shaft 8, the latter being provided With of strips 4 and -11 which are pivoted on frame sides 1 and 2 as indicated at 20. A heavy cross shaft 25, while a link 6is connected to crank 5 and at 19 to crank 9. In order to increase the raising action for the rotor, the link 7 is secured to the rotor carriage at 3 and at 19 llnthe low position of the rotor plates, as

, hold back the crank 5 so that the rotor will rotor and. stator plates are in the relative y spaced position shown in plan view in Fig. 4. Thegreat space between the plates here evi 'dent makes for an exceedingly low capacity,

especially as there is not even a parallelism in the relation of the rotor plates to the stator plates. Asmay be seen in 4,,the stator plates have a clearance 26 for the rotor shaft 2.5, so that the two units of plates will never be in Contact.

the whole mounted in a cabinet by any known The rotor shaft may,.of course, be equipped 'with the usual dial as Well as theknob, and

means,- the'whole range ofpos sible positions of rotor between the exti emes herein shown providing a very great variety of different capacities. The shape of the plates also en hence the value of my invention in that'they are more than semicircular in form, thuscontaini in a given radius.

ng more active surface than usual withsaid first crank.

2. A control device comprising a rigid mem her, a rocking member pivotally mounted thereon, a rotary shaft also mounted on said frame and provided with a crank secured thereto, a second shaft mounted on said rocking member in spaced relation to .the pivotal mounting thereof on said rigid member, a crank on said second shaft, a link connecting both said cranks, and a second link connected to said first crank and said rocking member and adapted to partially surround said first shaft in one extreme position. 3. A control device comprising a rigid member, a rocking frame pivotally mounted thereon, a shaft supported by said rigid memher having a crank thereon, a second shaft mounted on said frame in spaced relation to the pivotal mounting thereof on the first member, a rotary member secured on said second shaft and a crank also secured thereon, a link connecting said first crank with the 3 second crank, and a second link pivotally connected at one extremity to said rocking frame and at the other to said first crank, and a projection on said last link adapted to engage said first shaft in extreme advanced position of movement to providea stop, said last link being adapted to partially surround and engage the same shaft in the other extreme position, and means to rotate said shaft.

4;. A control device including the combination with a fixed member, .of a rotatable shaft supported in association therewith having a crank thereon, a rocking frame pivoted on said fixed member in such manner as to part- 1y envelop the same, a second shaft mounted on one end of said frame having an operative member fixed thereon to rotate therewith, said frame being rockable to raise said sec-1 0nd shaft and operative member above said fixed member, a crank on said second shaft, a link connecting said two cranks to cause said operative member to be turned from operative relation with respect to'said fixed member simultaneously with the raising thereof by said frame, and means to rock said frame from said first shaft,

5. A control member includingthe combination with a fixed member, of a rockable frame pivotally mounted in association with saidfixed member and having an end counterbalance, a shaftborne upon the opposite end of said frame and having an operative memhersecured thereon which is both swingable away from the first fixed member upon i' rocking of said frame and further separable therefrom by rotation with said shaft, means associated with said fixed member for rocking said frame and means for simultaneously controlling rotation of said operative member in positive manner in synchronism with rockmg movement of said frame.

6. A control device including a fixed mem-- her, a forked frame pivotally mounted exteriorly upon said fixed member and provided with a shaft upon its furcated ends, an oper ative member secured upon said shaft so as to be swingable by said frame from proximate relation to said fixed member, a manually rotatable shaft supported upon said fixed memher, a positive connection between said manual shaft and said first shaft to provide simultaneous rotation of the manual shaft and said operative memberand increase the space relation between the same and the 'fixed member, and a second connection between said manual shaft and said frame for directly rocking the same upon rotation of said manual shaft.

7. A control device including the combination with a rigid frame and a fixed member thereon, of a rocking carriage pivoted on said frame, a shaft mounted on said carriage in spaced relation to the pivotal mounting thereof, an operative member secured on said shaft corresponding with said first fixed member and being rotatable with said shaft, a

manually rotatable shaft supported on said first frame in spaced relation to said pivotal mounting of said rocking, carriage, a crank on each of said shafts, a link connecting said cranks and having such a'contour as to form extreme stops against said manual shaft to determine the two extreme rotated positions of said operative member inwhich it is relatively proximate to, and spaced from, said fixed member, and a link also connected to the crank on said manual shaft and to said rocking carriage to one side of the pivotal mounting thereof in ordertoprovide further $133101 ing of said operative member away from said first fixed member at will.

' In testimony whereof, I have signed my name to this specification this second day of November, 1925.

JOSEPHWM. sronsn.

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