US1765190A - Radio apparatus - Google Patents

Description

June17, 1930. Fm ASBURY 1,765,190

RADIO APPARATUS Filed Jan. 12, 1926 W 5' amit Patented June 1.7, 193@ I UNI res

FAWN? RADIO APPARATUS Application filed January 12, 1926. Serial No. 80,833.

My invention relates to radio apparatus, particularly to receiving sets employing plural tuning units, and my object, generally speaking, is to provide means for operating the tuning units of a receiving set collectively and individually for the purpose set forth in my copending applications 683,756; 687,080

689,388; 690,795; 72,514 and 7:2,8et0.

In most radio receiving sets employing m plural tuning units, each unit is movable substantially the same amount from a position in tune with a given wave length to a position in tune with any other given wave length, so. that it is possible to employ an operator common to all of the tuning units for moving them collectively substantially equal amounts whereby they will simultaneously be brought substantially in tune with any wave length within the receiving capacity of the set. For

various reasons, however, some one or another stantly in driving contact with the tuning units it is designed to operate and which is tiltable in different planes to move the respective tuning units individually and movable otherwise to move said. units collectively. Also it is my purpose to provide in combination with such an arrangement means whereby the adjustment of one unit made by a tilt,- ing movement of the operator in one plane is maintained while the operator is being tilted in another plane to adjust another unit individually, and whereby the adjustments of.

companying drawings and defined in the appended claims.

In the drawings, wherein like characters of reference denote corresponding parts in the different views:

Fig. 1 is a front elevation partly in section, of a plural tuning unit radio receiving set having my improved tuning unit operating means embodied therein; and

Fig. 2, a section on the line 2-2 of Fig. 1.

In the drawings I have illustrat :d an embodiment of my invention in whicl an operator is rotatable as well as longitudinally shiftable-to adjust a plurality of tuning units collectively, and which is tiltable to adjust them individually. The tuning units 10, 11 and 12, for convenience are shown as variable plate condensers, each including a stator 11' and a rotor 7) with the rotors mounted. respectively. on shafts 1,3, let. and 15', and the. latter equipped, respectively, with spiral gears 16, 17 and 18. Said condensers are mounted in any suitable manner, upon a panel board 20' for example, in triangular relative relation with their rotor shafts parallel to one another and with their spiral gears 16, 17 and 18 all in the same plane and in mesh with a spiral pinion 31.

Spiral pinion 31 is carried at one end of a shaft 32 which extends through a relatively large opening in panel board 20 and at its other end is equipped with an operating knob 33 and with a pin 31- as and for the purpose set forth in my application 72,514. Furthermore, said pinion 31 is of material thickness, in fact it preferably is formed of consider able length, so that it not only is rotatable to rotate spiral gears 16, 17' and 18 collectively, but is shiftable longitudinally to accom plishthe same purpose, the result beiugthat if it is rocked or tilted about a line drawn between its points of contact with any two of the gears 16, 17 and 18', the other gear will be individually rotated while the two gears about which it is tilted will, remain stationary. Thus by rotating said pinion rough collective adjustments may be imparted to the three tuning units and by tilting same individual tine adjustments may be imparted to said units.

justment of one unit made by a tilting move ment of the pinion in one plane is maintained while the pinion is being tilted in another plane to adjust another unit individually, and whereby the adjustments of two of the units made by tilting movements of the pinion in different planes will be maintained while the pinion is being tilted in still another plane to adjust a third unit individually.

The means referred to includes a bracket 35, mounted on a support such, for example, as panel board 20, and having a hollow cylindrical portion 36 the axisof which is at right angles to a line drawn through the points of contact of two of the spiral gears with spiral pinion 31. A pin 37 is slidably mounted within cylindrical portion 36 and said pin is rigidly connected by a segmental arm 38 with a second pin 39, the axis of which latter is disposed at right angles to a line drawn through the points of contact of another pair of the spiral gears with said pinion. A floatingbra cket 40 includes a hollow cylindrical portion 41 which is slidably mounted on pin 39 and said bracket also includes a second hollow cylindrical portion 42 the axis of which is disposed at right angles to a line drawn through the points of contact of the remaining pair of spiral gears with spiral pinion 31., A pin 43 is slidable in cylindrical portion 42 and said pin includes an eye 44 at its inner end which receives shaft 32 and acts as a support for the latter at a point spaced from gears 16, 17 and 18. Suitable friction devices such as leaf springs 45, 46 are secured, respectively, to brackets 35v an d 41 and engage, respectively, pin 37 and pins 39 and 43 with substantially equal amounts of friction to hold said pins in slidably adjusted positions within their associated cylindrical portions 36, 40 and 42.

As a result of the foregoing arrangement it is apparent that shaft 32 is free to be rotated. with respect to or to be moved longitudinally through eye 44 to rotate'the rotors 5 collectively, and that said shaft is free to be tilted in any rotated or longitudinally shifted position thereof from any one tilted position to any other tilted position to rotate any given rotor individually, eye 44 being moved with said shaft as it is tilted and the pins 37, 39 and 43 slidable in their associated cylindrical portions 36, 40 and 42, respectively, acting as guides to determine the proper direction of tilt of's'aid shaft to rotate any given rotor inone or another of said pins, Whereas an ab-- normal force would be required to tilt said shaft in any other direction. Consequently, if said shaft is tilted for example in the direction of the axis of pin 43 to rotate gear 16 individually,said pin 43 will maintain the proper amount of such tilt, while said shaft is being tilted in another direction, in the direction of the axis of pin 39 for example, to rotate gear 17 individually, and if said shaft thereafter is tilted in the direction of the axis of pin 37, to rotate gear 18 individually, pins 43 and 39 will maintain the first mentioned tilts while the latter tilt is being effected.

From the foregoing description considered in connection with the accompanying drawings, it is believed that the construction, op eration and advantages of my invention will be fully understood. I desire to point out, however, that various changes and desirable additions may be made in and to the arrangement shown within the spirit and scope of my invention as defined in the appended claims.

I claim: I

1. In radio apparatus, a tuning unit a part of which is movable, means for moving said movable part including a pair of intermeshing gears one of which is fixed with respect to said movable part and the other of which constitutes an operator for the one that is fixed to said movable part, one of said gears having diagonally extending teeth whereby tilting movement of said operating gear is effective to move said movable part, and means mounting said operating gear for tilting movements.

2. In radioapparatus, a tuning unit a part of which is movable, means for moving said movable part including a pair of intermeshing gears one of which is fixed with respect to said movable part and the other of which constitutes an operator for the one that is fixed to said movable part, one of said gears having diagonally extending teeth whereby rotation of said operating gear as well asendwise and tilting movements thereof are effective to move said movable part, and means mounting said operating gear for rotation and for endwise and tilting movements.

3. In radio apparatus, a plurality of tuning units a part of each of which is movable,

a plurality of gears one individual to and fixed with respect to each movable part, and a spiral gear in engagement with all of said first mentioned gears movable to drive them collectively and tiltable to drive them individually.

4. In radio apparatus, a plurality of tuning units a part of each of which is movable, a plurality of gears one individual to and fixed with respect to each movable part, a driving gear in engagement with all of said first mentioned gears rotatable to drive them collectively, said driving gear having spiral teeth whereby it is tiltable in one direction to drive one of said first mentioned gears individually and in another direction to drive another of said first mentioned gears individually, means -mounting said driving gear for, rotation and for tilting movements in different directions,- and means whereby the adjustment of one unit made by a tilting movement of the pinion in one plane is maintained while the pinion is being tilted in another plane to adjust another unit individually.

5. In radio apparatus, a plurality of tuning units a part of each of which is movable, a plurality of gears one individual to and fixed with respect to each movable part, a driving gear in mesh with all of said first mentioned gears, the toothed connections between said driving gear and each of said first mentioned gears including diagonally extending teeth, said tuning units being arranged in a circle about said driving gear whereby the driving gear is tiltable in one plane to drive one of said first mentioned gears individually and in another plane at an angle to the plane of its'first mentioned tilting movement to drive another of said first mentioned gears individually, means mounting said driving gear for tilting'moven'ients in different planes, and friction means for holding said driving gear against tilting movement in one plane While it is being tilted in another plane.

6. In radio apparatus, a tuning unit a part of which is movable, anoperator in constant driving connection with said movable part having a plurality of difierent forms of movement, one of which is a tilting movement relative to said movable part, to move same, and friction means coacting directly with said operator to hold the same in any tilted position to which it may be moved.

7. In mechanism of the class described, a pair ofspaced gear wheels, and an intermediate gear wheel between and constantly in mesh with said first mentioned pair of gear wheels, whereby the latter are movable collectively, said intermediate gear wheel having a shiftable axis whereby .it is movable to move said first mentioned gear wheels individually.

.8. In mechanism of the class described, a

pair of spaced gear wheels, an intermediate gear wheel between and constantly in mesh with sand first mentioned pair of gear wheels,

by axial rotation thereof and-also movable to adjust them individually.

10. In radio apparatus, more than two adjustable tuning units, and a single operator constantly connected with all of the units axially rotatable to adjust them collectively and tiltable to adjust them individually.

11. In radio apparatus, a plurality of adjustable tuning units, a single operator constantly connected with all of said units rotatable to adjust them collectively and tiltable to adjust them individually, and friction means resisting tilting movements .of said operator.

12. In radio apparatus, a plurality of adjustable tuning units, a single operator con stantly connected with all ofsaid units tiltable to adjust them individually, and friction means resisting tilting movements of said operator.

13. In radio apparatus, a plurality of adjustable tuning units, a single operator movable to adjust them individually, and triction means coacting directly with said operator to hold the same in any position it may be moved in effecting imlividual adjustment of the units.

1a. In radio apparatus, a plurality of ad justable tuning units, a single operator coustantly connected to all the units and movable to adjust them individually, and friction means coacting directly with said operator to hold the same in any position it may be moved in effecting individual adjustment of the units.

In testimony whereof I hereunto atiix my signature.

- DORSEY F. ASBUR-Y.

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