US2194502A - Coil support - Google Patents

Description

March 26, 1940.. R HQWEg. 2,194,502

COIL SUPPORT Filed June 6, 1939 (247/ E #02062 9y Rm Patented Mar. 26, 1940 UNITED STATES COIL SUPPORT Carl R. Hower, Chicago, 111., assignor to Ameri can'Lava Corporation, Chattanooga, Tenn., a corporation of Tennessee Application June 6, 1939, Serial No. 277,662

a 1 Claim.

This invention relates to a coil support and particularly to a support for one or more small coils such as may be used ina radio receiver. The invention has particular application to radio frequency transformers in the antenna circuit or for radio frequency chokes or any other part of any electrical apparatus where a small delicate coil or coils are to be supported.

Referring to the drawing:

19 Figure 1 shows the invention partly in section;

Fig. 2 is a section on line 2-2 of Fig. 1;

Fig. 3 is a section on line 3-3 of Fig. 2;

Fig. 4 is a detail of the angle-shaped supporting member;

13 Fig. 5 is an end view of the insulating thimble showing the slotted end while Fig. 6 is an end view showing the other end of the thimble;

Fig. 7 is a detail of the insulating compressible disk; and

20 Fig. 8 is a detail of a connecting lug.

Referring to the drawing the device comprises supporting member I of metal having a base portion 2 provided with a mounting aperture 3 and an upstanding portion 4 having an aperture 5 8 near the end thereof and protuberance 6 near aperture 5. Adjacent the free end of mounting portion 4 is a. circular disk 8 of insulating material preferably though not necessarily having substantial compressibility. Thus any of the lami- Q .nated insulating'materials having layers of fabric impregnated with some phenol condensation product and sold under various trade names may be used. Ceramic disks may also be used. Disk 3 is provided with an aperture 9 at the center thereof which is adapted to register with aperture 5 of the mounting member. There is also provided on disk 3 a slot III extending inwardly from the edge of the disk toward aperature 9.

Disk 3 is adapted to be disposed against one end I2 of a thimble-I3 preferably of ceramic although any other insulating material may be used. This thimble may be of any suitable length and is provided with a bore I4 extending throughout most of the length of the thimble. One end of bore I4 terminates in a shoulder I5 and then the bore is continued as It having a diameter substantially less than that of bore Il.

One end face I2 of thimble I3 is provided with a plurality of slots I3 0 the edge of the thimble toward the center bore. These slots I3, here shown as four in number, although more or less may be provided, are preferably rectangular and terminate at their inner ends in recesses I3 which extend into the interior of the thimble. A locating protuberance 20 is also provided on end face I2 between two of the slots I3.

Disposed in each slot I3 is a contact lug 22 having a narrowed or reduced mounting portion 23 with an end locking portion 24 bent at right extending inwardly from v angles thereto. The lug proper may be provided with an aperture 25 and have its edge out in somewhat at 26 in order to provide for the ready soldering of one or more wires.

As is evident from the drawing, a lug is disposed in slot .I8 so that a locking portion 24 extends into a recess I8. The various parts are so proportioned that the lug material is somewhat thicker than the depth of slot I8. and is pressed tightly on opposite sides. In order to maintain the assembly intact the mounting portion or arm I together with the disk 8 and thimble I3 are so I disposed that the various apertures 5, 9 and I6 all register. Thereafter an eyelet 21 is passed through the registering apertures and curled over in place to maintain the assembly intact. The various parts are so adjusted that the protuberances 6 and are disposed in slot ID of insulating disk 8 and this disk is preferably of suflicient thickness so that the two protuberances 20 are separated.

Thereafter coils 30 and 3| may be disposed on thimble I3 and have their terminals connected to the lugs in any suitable fashion. As shown in Fig. 3, for example, the coils are disposed in transformer relationship and may be readily picked up or handled without damage.

It is understood of course that the connecting lugs may be changed in number and shape as the occasion demands. The entire assembly is rigid, and turning of the thimble on the eyelet is prevented so that there is no possibility of breaking the connecting wires to outside apparatus. Relative motion between the lugs and the coils is prevented so long as the coils are not moved on the thimble so that the coil terminals will not be damaged. The lugs themselves are retained firmly enough so that the entire unit may be handled either by means of the base member I or any of the lugs.

What is claimed is:

A coil support comprising a cylindrical thimble having an end face provided with slots extending inwardly from the edge of the face toward the center thereof, said thimble having a protruding portion at the end face thereof, a connecting lug adapted to fit into each slot and be flush with the end face of said thimble, an insulating disk adapted to be disposed against said end face of said thimble, said insulating disk having a slot adapted to register with said protuberance, a mounting member having a protuberance and adapted to be disposed against said insulating disk with said protuberance fitting into said disk slot, and means for maintaining said insulating disk, mounting member and thimble in rigid relation to lock said lugs together and prevent relative rotation between said disk, mounting member and said thimble.

CARL HOWER. Q0

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