US1581162A - Tuning-coil mounting - Google Patents

Description

April 20', 1926. 1,581,162

E. J. BOUCHER TUNING c0111 MOUNTING Filed April 18, 1923 2 Sh eetsShe'et 1 Jrwentoz airman A ril 20, 1926. 1,581,162

E. J. BOUCHER TUNING COIL MOUNTING Filed April 18, 1923 2 Sheets-Sheet 2 Patented Apr. 2E9, 192%.

cairn stares ELIILE J. BOUCHEBI, F CATONSVILLE, MARYLAND.

TUIIING-COIL MOUNTING.

Application filed Apri1 18, 1923. Serial No. 632,880.

To all 10720212.. it may concern:

it known that I, Ennis J. Bouonnn, a citizen of the United States, residing at Catonsville, in the county of Baltimore and State of h'laryland, have invented certain new and useful Improvements in Tuning- Coil Mountings; and I do h reby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to coil mountings.

Among the objects of my invention are To produce a coil mounting capable of controlling the mutual inductance between the primary coil and the secondary and tickler coils of a tuning set by moving the secondary and tickler coils relatively to said primary coil, which is fixed.

To produce such a mounting which obviates the necessity for gears by mounting the secondary and ticlrler coils upon revoluble shafts which extend to the front of a panel forming part of the tuning set and combining with said shaft an efficient de vice for producing sufficient friction to hold said coils in whatever positions they may be placed.

Heretofore, ditliculty has arisen by the use of inefficient frictional devices, or secondary and tickler coils have been mounted on vertical shafts, but this form of mounting required the use of gears when the operating knobs for said coils were placed on the front of the panel.

My invention also comprehends certain peculiarities in the attachment of the secondary and tickler coils to the plug comprising the terminals of said coils.

By the use of my improved mounting I am enabled to readily remove the coil from a plug to secure another coil to said plug. These and further objects of my invention will be set forth in the following specification, reference being had to the accompanying drawings, and the means by which said objects are efiectuated will be definitely pointed out in the claim.

In the drawings Figure 1 is a side view of a tuning set equipped with my improved device.

Fig. 2 is a section along the line 2-2 in Fig. 1 looking in the direction of the arrows, the base being omitted.

Fig. 3 is a section along the line 3-3 in 5 Fig. 1 looking in the direction of the arrows. Fig. 1 is a detail hereinafter referredto. In the drawings 5 represents the base to which there is secured a vertical panel 6, both being made of any approved material.

To the'base 5 housings 7'? are securedand said housings comprise bearing holes for the shafts 8 and 9. The panel 6 also comprises bearing holes for said shafts and 6. on the front of each of said shafts there is secured an operating knob similar to 10 which is secured to the shaft 8. To each of said knobs is secured a pointer 11 which cooperates with any usual form of dial, (not shown), for indicating the angular positions of said shafts.

A metallic plate similar to 12 having a hole through which passes the corresponding shaft is placed upon each of the shafts 8 and 9 and said plate is prevented from turning by friction against the panel 6.

A hub such as 18 is secured upon each of the shafts 8 and 9 by a screw such as 14: and to each of the hubs 18 there is secured a plurality of spring fingers such as 15 which bear against the plate 12 with sufficient force to hold the shafts 8 and 9 in any position to which they may be moved.

Between the housings 7-7 there is secured to the shaft 8 a plug 16 and a similar plug 17 is secured upon the shaft 9 between said housings. Each of these plugs has two screws such as 18 for the attachment of conductors thereto, and in addition, each plug has a projecting terminal 19 and a tubular terminal 20 mounted therein, the latter not extending beyond the surface of said plug.

A plug 21 similar to the plugs 16 and 17 is secured between the housing 7-7 midway between the shafts 8 and 9.

A stop 22 is secured in the plu 2 1 for a purpose hereinafter explained.

Plugs 23, 24: and 25, similar to the plugs 16, 21 and 17 are detachably secured, respectively, to the last-named plugs by the projecting terminals 26 in the plugs 23, 24c and entering the terminals 20 on the plugs 16, 21 and 17, and by the tubes 27 in the plugs 23, 24; and 25 embracing the project ing terminals 19 upon the plugs 16, 21 and 1(.

secured. to the plugs ea and and since the mode of securing the two plugs is similar, it will be described only with reference to the plug 23.

The support QS-is secured to the plug H3 by screws such as 29 and said support is bent at right angles and to the bent end there is secured, as y soldering or in any approved manner, the threadedsleeve 30, having the flange 31 formed integrally therewith.

The coil disk is provided rith a hole through Which passes the sleeve 30. A Washer 33 is mounted on said sleeve and the nut 84 clamps the coil disk 32'between the flange 31 and washer33.

The coil 35 is stagger-wound in the usual mannerand its terminals connected to the screws 36. A similar coil 37 is mounted uponthe coil disk 38 and its terminals are connected to the screws A coil disk 40 is provided with a coil ll connected-to the screws and said dis: is PIOVlClGlTl with an extension 4.3

which is mountedin the slot provided in the plug 24 and secured therein by the screw ll.

.The operation ofniy improved coil mountingis as follows:

It the support 28 is removed from the plug 23 and the nut 3% is removed from the sleeve 30, then the coil dish (see Fig;2) ,-maybe movedatowards the left past the 'bend in the support which can then be Withdrawn from said coil.

By this means I provide for attaching a plurality of coils differing in number of turns of wire to the plug 23. Similarly, coils difiering in number of turns of wire may be attached tothe plug 25.

The coils 35 and 3'? areusuallywoi Lid with a different number of turns, and it is evident that the plugs E23 and 25 with their attached coils may be reversed in position.

Itis also evident that when the plugs 16 and 1'? strike the ends of the stop 22, their movement toward the central plug 21 will be arrested.

The positions of the coils 35 and 53? with reference to the coil ll canbe varied by turning the knobs lO -and the spring lingers will hold said coils in whatever positions they maybe placer "While 1 have shown one preferred form ot'iny invention, it is to he understood that this is for purposes of illustration only and in nowise to limit the scope thereof, for changes may be made therein w thout dcparting from the spirit Ofll'lf," iDTGfitlOil. 1 claim l he con'ibination with a plug comprising terminals, of a support secured to said plug,

a threaded-sleeveprovided with a flange sccured onsaid support, a coil diskino-unted on said sleeve, a nut on said sleeve for clamping said disk against said flange, and a 0011 on said disk having its ends connected to said terminals.

In testimony whereof, I allix my signature.

EMILE J. BGUCHER.

CIY

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