US2176667A - Radio receiving set - Google Patents

Description

Oct.. 17, 1 939. D. J. cRowLEY 2, ,66

RADIO RECEIVING SET Filed Dec. 4, 1936 '7 Sheets-Sheet 1 [N VENTOR DANIEL J. CROWLEY ATTORNEYS 06:. 17, 1939. D. J. CROWLEY 2,176,667

RADIO RECEIVING SET Filed Dec. 4, 1936 '7 Sheets-Sheet 2 INVENTOR DANIEL J.CROWLEY 56 62 A TTORNE VS Oct. 17, 1939. D. J. CROWLEY RADIO RECEIVING SET Filed Dec. 4, 1936 7 Sheets-Sheet 3 FIG.8.

oer. a osc.v 37 39 INVENTOR DANIEL J.CR0WLEY M fag M- FIGJQ.

15. J. CROWLEY RADIO RECEIVING SET Oct. 17, 1939.

7 Sheets-Sheet 4 Filed Dec. 4, 1936 M m m m DANIEL J.CROWLEY W MVMQ/ZJM A TTORNEY$ 17, 1939. D. J. CROWLEY RADIO RECEIVING SET 7 Sheets-$heef 5 IN VENTOR OWL Y BY I DANIEL J CR E v A TTORNE Vs Filed Dec. 4,

Oct. 17 1939. D J, CROWLEY 2,176,667

RADIO RECEIVING SET Filed Dec. 4, 1936 7 ShGGtS-Shet 6 ga/l58B INVENTOR B DANIEL J. CROWLEY I56 I I I61 7 I55 firm/MM 4 TTORNEYS Oct. 17, 1939.

J. CROWLEY RADIO RECEIVING SET Filed Dec. 4, 1956 7 Sheets-Sheet 7 5 7 a 2 96 5 4 R 2 4 3 0 G 2,. 2 M T I: w M. m .MFZ V 2 5 N 2 l 8 l 5 WW. 2 2 I. m 4| H 5 W- 2 Y/2'14 1 2 r c R s l 3 5 2 I! H 2 7 m u 2 2 M 2 k w 2 2 2 a 2 2 A l M W i DANIEL J. CROWLEY By W ATTORNEYS Patented Oct. 17, 1939 2,176,667 RADIO RECEIVING" s'it'r Daniel J. Crowley, Grosse Pointe, Mich. Application December 4, 1935, .seiiai No. 114$ 8 Claims. (01. 250-14) This invention relates generally to radio re and will be made more ceiving apparatus andrefers more particularly to apparent as this description proceeds, especially a lamp constructed to embody the several inwhenconsideredin; eonnection with the accomstrumentalities of the receiving apparatus. panying drawings where H I I I One of the principal objects of this invention Figure a; per pective view of a lamp em- 5 resides in the provision of a radio receiver combodying radio receiving apparatus in accordance prising a standard circuit of proven efliciency with the present ntipn and having certain having the several instrumentalities ingeniously partsbroken aWay f r thesakeof cIearnes s I I arranged in compact groups capable of being Figure Z is across secti nal vievv taken sub- 1O housed in different portions of a relatively small stantially on the plane indicated by the line 2-2 lamp, Without interfering with the efiiciency of of Figure 1; I I I I I operation of the receiver or impairing the illu- ,Fignre Sis a cross sectional view taken subminating qualities of the lamp, and without unstantially on the plane indicated by the line 3-3 duly restricting the artistic design of the lamp. of Figure l; p I I I I II I II I I I In accordance with this invention, the lamp may Figure 4 is a cross sectional view taken sub- 15 be any one of a number of numerous designs and stantiall 0n the pl'aneindicated by the line 4-4 the receiving apparatus may be incorporated in of Figure 1;; I, I II I I I the lamp structure in such a manner as to be figure 5 is across sectional view taken subentirely concealed from view. stantially on the plane indicated by the line 5-5 Another advantageous feature of this inv'enof Figure 1;. V 20 tion resides in the provision of radio receiving Figure 6 is a cross sectional view taken subapparatus of the character set forth embodying stantially on-th'e plane indicated by the line 6-6 relatively improved means foractuating the sevof Figure 1;-v

eral controllable instrumentalities of the circuit, Figure 7 is a cross sectional view taken subsuch as the variable condensers and the combined tantially n th plane indi by the l n 25 volume and switch control. of Figure 1;- I A further object of the present invention which Figure .8 is a fragmentary cross sectional view contributes materially to the practicability of my taken substantially on the plane indicated by the improved apparatus consists in the provision of line 8-8 of Figurefi; I I

a combined lamp and radio unit, wherein the Figure 9 is .a' cross sectional view taken sub- 30 tubes of the receiving circuit having the greatest stantially on the plane indicated by the line 99 heat transfer are supported at a point remote of Figure 6:;.. I from the remaining instrumentalities of the cir- Figure 10 illustrates a diagram of one type of cuit in a region where this heat may be readily radioreceiving circuit that may be employed in dissipated without damaging the insulation or thelamp'constructiomfeatured in the above fig- 35 parts of the receiving circuit. In accordance with uresi' I this invention, the rectifier and amplifier tubes Figure 11: is a s'ideelevational view of a modiare arranged in the lamp shade, whereas the refled-form of 'a' combined lamp and radio receiving maining tubes and associated parts are disposedv apparatus:and having'certain parts broken away 40 in the lamp base or in both thelatter andshade for the salieiofclearness; 40 supporting stanchion. The radio frequency and FigurelZ'is" across sectional view taken subdetector tubes operate cooler than the tubes in stantial-ly on the: plane indicated by the line the shade and for this reason may be compactly I.2"-l2 of Figurelljf V. V arranged Without the danger of the heat melting Figure .13 is a cross sectional view taken sub;

' or otherwise damaging the parts associated in stantially on the; plane indicated by the line 45 relatively close proximity thereto. This feature |3.-l3 of Figure11;. H renders it possible to install an efiicient radio re- Figureli'isa-sjectional view taken substantially ceiving circuit of commercial capacity in a lamp on the, plane indicated by the line I4-l4 of Figof pleasing proportions and contributes mateure 12;; I I II rially to the general appearance of the unit. Figure lti is a sectional view taken substan- 5 In addition to theforegoing, this invention contially on the plane indicated by the 'line l5-|5 templates a combined lamp and radio receiving of Figure 12 I I I I I I apparatus, wherein'the unit in the shade section Figure 16 i s" a' side elevational view partly' in of the lamp maybe readily detached from the section of a' er:nbodim eI it v of a combined remaining units and this feature, as well as the lamp'and radio receiving apparatus; 55

Figure 17 is a cross sectional view taken substantially on the plane indicated by the line ll-Il of Figure 16;

Figure 18 is a cross sectional view taken substantially on the plane indicated by the line l8l8 of Figure 16;

Figure 19 is a cross sectional view taken substantially on the plane indicated by the line |9-l9 of Figure 16;

Figure 20- is a fragmentary, vertical sectional View through a portion-of the base of the .lamp featuring the means for operating the variable condensers;

Figure 21 is a side elevational view, partly in section, of a modified'form of combined lamp and radio receiving apparatus; ,i',"

Figure 22 is a cross sectional view taken substantially on the plane indicatedby' the line 2222 of Figure 21;

Figure 23 is a cross sectional view taken substantially on the plane 23'23 of Figure 21; I 1

Figure 24 is a vertical sectional view through R the control mechanism shown in Figure 21;

the upper end thereof.

Figure 25-is a side elevational- View, partly in section, of still another embodiment of combined lamp and radio receiving apparatus;

Figure 26 is a side elevational view, partly in form of construc- Figure 27 is a fragmentary vertical sectional view through the base of an additional modified construction. a

, Referring first to the embodiment of the invention illustrated in Figures 1 to 10 inclusive, it

will be noted that there is illustrated in Figure l, a relatively small artistic table lamp 3!] having a base 3! supporting a vertical stanchion 32 and having a shade 33 carried by the stanchion 32 at In the present instance, one portion of the radio receiving apparatus is housed withinithe base 3|,another portion-is housed in the vertical stanchion 32 and still another portion is arranged within the lamp shade 33.

Although it is to be understood that the specific parts of the radio receiving apparatus housed in the aforesaid sections of-the lamp may vary to suit existing conditions, nevertheless, forthepurpose of illustration, I 'haveresorted to the following arrangement Upon reference toFigure 10, it will be noted that the radio receiving "cir-.

cult, selected herein for the purpose of illustrating the present'invention, is of the super-heterodyhe type an'd't'ne parts thereof contained in the area defined by the character A are housed within the base '3l' of the lamp, while the parts of the circuit contained in the area defined bythe character B are located in the'vertical stanchion '32 of the lamp, and the instrumentalities of the circuit contained in the'area defined by the character C are located in the shade 33 of the lamp. In order to illustrate the ingenious'manner in which the various parts'of the radio receiving circuit are compactly arranged in the several sections of the lamp, reference will be-brie'fiy madeto the various units of the receiver included'in the areas defined by the-charac'ters A, B and C. Referring again more particularly to Figure 10,' "it will be noted that the base 3 l 'ofthe lamp houses one stage of radiofreduencyiinclu ding an RAF coil 34 and a. tube 36,of t hejf6K7 type.

The base 3| of the lamp .als'o includesf the first detector and oscillator stage, including a detecf tor coil 31, a variable condenser 38 and a penta- -58 and an audio tube 5|.

indicated by the line able condensers 46 for respectively tuning the primary and secondary of the second detector coil,

and'the second detector tube 41. The power pack defined by the character C is housed within the lamp shade 33 and includes a full wave rectifier tube 48 and an amplifier 48 comprising a speaker The problem of compactly arranging the several parts of the radio receiving apparatus in the base and stanchion of the lamp without the danger of overheating the insulation associated with certain of said parts, is solved by locating the power pack in the shade of the lamp where the heat radiated by the rectifier and amplifier tubes may be readily dissipated.

One of the principal features of the present invention which contributes materially to compactly arranging in the base 3| of the lamp the instrumentalities of the receiving circuit contained in the area A, consists in the unique arrangement of the variable condensers and the manner in which the latter are operated. The particular arrangement of the variable condensers is shown and described in detail in my co-pending application Serial No. 58,597, filed January 10, 1936. Briefly, however, each of the Variable condensers 35, 38 and 43 are shown in Figure 6 as formed of two complementary sections arranged in parallel so that the two sections of each condenser cooperate to provide the specified capacity. The aforesaid condensers are preferably identical in construction and each comprises a pair of stators 52 and a pair of rotors 53 predeterminedly mounted for rotation relative to the stators in a manner to be more fully hereinafter set forth.

In order to simplify the control of the radio receiving apparatus, common means is provided for simultaneously rotatably adjusting the rotors 53 of each of the condensers 35, 38 and 43. The manner in which the foregoing is accomplished will be understood upon referring to Figures 6 to@9 inclusive, wherein the reference character 54 designates a fibre driving gear mounted for rotation substantially centrally of the base 3| of the lamp and arranged in mesh with the three gears designated in Figure '7 by the reference characters 55, 56 and 51. The gear 55 is secured to the shaft 58 of one of the rotors of the variable condenser units 35, while the gear 56 is secured to the rotor shaft 59 of one of the rotors of the variable condenser unit 38, and the gear 51 is secured to the rotor shaft 68 of one of the rotors of the condenser unit 43, Thus, it will be observed that one rotor shaft of each pair is driven'by the drive gear 54 and, in order to impart the same degree of rotation to the other rotor shaft of each pair, suitable gears 6| are secured to the latter shafts in mesh with the gears 55, 56 and 51 respectively. The gears 6i are of the same size as the gears 55 to 51 inclusive so as to insure simultaneous movement of the rotors at the same rate of speed, and the axes of the gears 6| are so 10- 75 cated that the latter gears do not mesh with the drive gear 54. Adjustment of the rotors of the several variable condensers is efiected through the gears by means of a control 62 having an arm 63 secured as at 64 to the drive gear 54 and extending later-ally outwardly from the latter gear through an arcuate slot 65 formed in the side wall of the base adjacent the bottom of the latter. The other extremity of the arm 63* is provided with an upwardly extending pointer 66 and a knob 6'! is secured to the pointer in a position to be conveniently grasped by the operator. The pointer 66 is for the purpose of indicating the usual indicia applied to'a band 68which, in turn, is secured to the side wall of the base above the slot 65,

Referring now more in detail to the particular construction of the lamp selected herein for the purpose of illustration, it will be noted that the same comprises a base plate 69 secured to an auxiliary non-metallic base 1|] through the medium of the fastener elements 'II. The auxiliary base 10 is positioned in spaced relation to the base 69 through the medium of the spacers l2 surrounding the fastener elements 1| and of sufficient length to provide the space 13 between the two plates required to house the gearing previously referred to as operating the rotors of the variable condensers 35, 38 and 43. Upon reference to Figure 9, it will be noted that a fastener element "serves to secure the central portion of the base plate 69 to a disc 15 held in spaced relation to the plate 69 by means of a spacer 16 located Within the space 13 and having a length approximating that of the spacers 12 so as to support the disc 15 in the plane of the auxiliary base plate Ill. In the present instance, the spacer 16 is provided with a cylindrical exterior surface forming a journal for the drive gear 54 of the variable condenser gear train,

The manner in which the remaining gears of the aforesaid train are mounted is illustrated in Figure 8. In this connection, it is to be noted that Figure 8 shows only-the pair of gears, 51

and 6| directly associated with the variable condenser 43', and it is to be understood that the remaining pairs of gears are mounted in an iden-' tical manner. In detail, the gears 51 and 6| are secured to the lower ends of the variable condenser. rotor shafts 60 and BI respectively. These shafts are suitably journalled in metallic inserts l1 secured in the auxiliary base plate 10 and the portions of the-shafts extending above the auxiliary base form supports for the complementary variable condenser rotors 53. The rotors 53 are provided with bushings 19 secured to the rotor shafts and carrying the rotor plates 80. The rotors 53 are grounded by spring metal fasteners 83 having the outer ends fixedly secured to the auxiliary base 10 and having the inner ends disposed between the latter base and the lower ends of thebushings 19. As shown in Figure 8, the inner ends of the fingers 83 are shaped to constantly urge the rotor shafts in an upward P direction and thereby maintain the required relationship between the rotor blades and the cooperating stator blades of the variable condenser. Thus, it will beapparent that each of the variable condensers, employed in the construction, is

a formed of two complementary sections cooperating to afford substantially double the capacity of a single condenser unit of the same height. In other words, the above construction renders it possible to house condensers of the required capacity in a relatively small vertical space and this is of extreme importance in the present illustrative embodiment of the invention, due to the limited vertical space available in the base 3| of the lamp,

Upon reference to. Figures 3,5 and 6, it will be noted that provision is made to shield certain parts of the radio receiving circuit from other parts of this circuit. This'is accomplished herein by arranging the vertical shields 84 in the base 3| having the lower ends extending through the auxiliary base plate 10 and secured to the underside of the latter by means of the horizontal. plates 85-. The particular number of shields and the arrangement of the latter in the base 3| will, of course, depend upon the nature of the portions of the circuit housed in the base. With the specific arrangement shown in Figures 1 to 10 inclusive, the shields 84 are preferably located in the mannerclearly illustrated in both of Figures 5 and 6- to shield from each other, the several parts of the radio receiving circuit shown in these figures.

Cooperating with the base plate 69 to form a housing for all of the parts of the radio receiving apparatus in the base 3| of the lamp is a casing 85' secured at the lower end to suitable brackets 86 by fastener elements 81 having the additional function of securing the indicia band 68 to the side wall of the casing. The brackets 86 are secured to the auxiliary base plate It! in the manner shown in Figure 8 and the fastener elements 81 are preferably the only means securing the casing 85' in place, with the result that the same may be readily removed when access to the radio receiving parts in the base is desired. The contour of the casing 85 is shown in Figure 1 and as will be observed from this figure, the top wall of the casing is apertured to provide for extending the combined volume and on and off switch control 88 therethrough. It will, of course, be understood that the knob of this control is readily detachable in order to permit the casing 85' to be removed when desired. The top wall of the casing 85' is also'centrally apertured as at 89 to receive a bushing 90 having the lower end sleeved over the disc- 15 and permanently secured to the latter. The upper end of the bushing 99 projects above the top wall of the casing 85' and is normally concealed by a collar 9| fixedly secured to the casing 85.

Referring now to the peculiar construction of the stanchion 32 of the lamp, it will be noted that the same-comprises two eccentrically arranged tubular sections 92 and 93. The outer tube 92 is formed of two complementary sections for convenience in assembly and the lower end of this tube is sleeved within the collar 9| to seat upon the upper end of the bushing 90, in the manner clearly shown in Figure l. The complementary sections of the tube 92 are secured in assembled relation at the lower end by the collar 9| and at the upper end by the closure 94, threadedly secured to the stem 95 projecting into the tube 92 through the closure 94.

The tube 93 is'supported within the tube 92 eccentrically with respect to the latter so as to provide the maximum space 96 for the electrical conductors 91 required to connect the instrumentalities of the radio receiving apparatus in the base to the parts of the same in the stanchion stated that the intermediate tube 44 and the second detector tube 41 are located in the stanchion 32 and in the present instance, are housed in the tubular member 93. In order to permit these tubes to be readily .assembled with, or removed from, the tubular member 93, the latter is cut away opposite the tubes in the manner designated by the reference character 99. In this connection, it will be noted from Figure 5 that the bushing is also cut away as at I00 in alignment with the cut-away portion 99 in the lower end of the tubular member 93 so as to completely expose the intermediate tube 44 through the tubular member 93.

Referring nowto the construction of the lamp shade 33, it will be noted that a housing IOI is secured to the upper end of the stem within the shade I02 and this housing contains the power transformer I03, together with the associated choke coils forming parts of the power pack or speaker unit assembly. The speaker 50 is supported upon the upper end of the housing within the shade I 02 and the cone I04 of the speaker is supported, in the manner shown in Figure 1, directly below the perforated disc I05 forming the top of the shade I02. The above construction is such that the shade I02 also acts as a bafiie to prevent the upwardly directed column of air from co-mingling with the downwardly directed column of air, and thereby prevents the cancellation of the bass notes.

Upon reference to Figure 1, it will also be noted that the housing IOI supports the illuminating bulbs I06, and these bulbs are so positioned with respect to the other instrumentalities housed in the shade as to prevent the same from casting a shadow on the shade. The illuminating bulbs I06 are arranged in switch sockets IN and the latter are connected to the housing through the medium of tubes I08 of sufficient diameter to permit the electrical conductors to be extended therethrough.

The embodiment of the invention illustrated in Figures 11 to 15 inclusive is similar to the one previously described, with the exception that provision is made for detachably securing the shade unit 33 of the lamp upon the stanchion 32*. In detail, a non-metallic disc H0 is sleeved within the upper end of the outer tube 92 and is secured to the lower wall of the housing I0I in spaced relation to the latter wall by means of the fastener elements III. The disc IIO has secured thereto, a plurality of plugs II2 predeterminedly located to be received within suitable sockets II 3 carried by a crescent-shaped nonmetallic member H4. The crescent-shaped member II 4 is secured to the inner tube 93 by means of the brackets H5 and each, of the sockets is connected to an electrical conductor II 6 extending from the instrumentalities of the radio receiving circuit it is desired to electrically connect to the several parts of the power pack unit housed by the lamp shade 33 The latter parts of the power pack unit are electrically connected to the plugs II2 by means of the conductors 1, so that when the plugs II2 are engaged in the sockets, a complete circuit is effected. Accidental separation of the plugs II2 from the sockets H3 is prevented by means of a relatively simple latch shown in Figures 12, 14 and 15. In detail, a latch member H8 is secured to the inner Wall of the outer tube 92 and this latch is provided with an, inwardly extending detent II9 normally engageable with the upper surface of the disc H0, in the manner clearly shown in Figure 14, to prevent relative vertical displacement between the stanchion and housing IUI Upon reference to Figure 12, it will be noted that two of the latch members II8 are provided and also that the disc H0 is slotted at its periphery in the manner shown by the reference character I20. The slots I20 are of sufficient dimension to provide for the passage therethrough of the detents I I9 and require a slight relative rotative movement between the disc H0 and the stanchion 32 in order to align the detents II9 with the slots I20. It will, of course, be understood that the plugs II2 must be disengaged from the sockets II3 before the necessary relative movement aforesaid may be effected to align the detents II9 with the slots I20, and this may be accomplished by removing the fastener elements 8'1 and the knob of the volume control 88 so as to permit the inner tube section 93* to be lowered relative to the outer tube 92 the distance required to disengage the sockets I I3 from the plugs II2. With the foregoing exceptions and with the exception that the outer tube 92 need not be formed of two sections as in the first embodiment of the invention, the construction may be the same as described in detail in connection with the first modification.

In the embodiment of the invention illustrated in Figures 16 to 20 inclusive, I have shown a different arrangement of the several instrumentalities of the radio receiving circuit in the base and stanchion of the lamp. In general, the base I25 contains only the variable condensers of the receiving circuit and the means for actuating the several rotors of the condensers simultaneously. The remaining parts of the radio receiving circuit described in connection with the first form of the invention as being in the base of the lamp are, compactly positioned within the stanchion I26, and the latter is divided into three compartments for accommodating these parts. Upon reference to Figure 19, it will be noted that the first detector coil I21, the oscillator coil I28 and the RF coil I29 are located in the compartment I30 and are shielded from one another by the shield I3I. Disposed directly above the compartment I30 is an intermediate compartment I3I and the latter is adapted to house the pentagrid converter I32, the first intermediate tube I33, intermediate coil I34 and the RF tube I35. As shown in Figure 18, the several tubes in the compartment I3I are shielded from one another and from the coil I34 by the shields I36. The upper compartment I32 is shown in Figure 1'7 as containing a second intermediate coil I31, a second detector tube I38, a second intermediate coil I39 and a second intermediate tube I40. The tubes I38 and I40 are shielded from each other, as well as from the two coils, by means of the shields I4I suitably secured within the compartment I32. It will be noted from the above that the circuit in the present lamp construction differs from the circuit featured in Figure 10 in that it embodies an additional stage of intermediate frequency. 7

The variable condensers are exactly the same in construction as defined in connection with the first embodiment of this invention and the gearing for operating the rotors of these condensers is also arranged in the same manner previously described. However, the means for simultaneously operating the several rotors of the condensers is slightly different and this means is shown in Figures l6 and 20 as comprising a ring I42 supported for'rotation about the axis of the drive gear 54 by the rollers I43 secured to the base plate I44 in circumferential spaced relationship. The diameter of the ring is predetermined with respect to the dimension of the base I25 so that peripheral portions of the ring extend through slots I46 in the several sides of the base permitting the ring to be conveniently engaged by the operator from several sides of the base. Upon reference to Figure 20, it will be noted that the ring is secured to the drive gear 54'' by means of a strap I41 so that the rotative movement imparted to the ring will be transferred to the drive gear 54 and from the-latter to the several rotors of the condensers in the same manner described in connection with the first embodiment of this invention. With this construction, the condensers may be controlled from any one of a number of sides of the base and the volume may be regulated by a control 88 similar to the one shown in Figure 1 of the drawings.

The power pack and speaker assembly may be carried in the lamp shade in the manner shown in the first embodiment of the invention, and this unit may be readily detachably secured to the stanchion by incorporating the construction defined in the embodiment of the invention featured in Figures 11 to 15 inclusive.

The embodiment of the invention shown in Figures 21 to 24 inclusive, illustrates the radio receiving apparatus in association with a fioor lamp. In this construction, provision is made at a convenient elevation on the stanchion of the lamp for operating the several variable condensers of the radio receiving apparatus and for actuating the combined switch and volume control.

In detail, the lamp shown in Figures 21 to 24, inclusive, comprises a shade I59, a base I5I and a vertical stanchion I52 supporting the shade from the base. The shade assembly I50 is similar in construction to the one described in connection with the first form of this invention, with the exception that it includes the combined volume control and switch I53, in addition to the power pack unit I54. All of the remaining instrumentalities of the radio receiving apparatus including the variable condensers I55 are compactly arranged in the base I5I of the lamp. In the present instance, the variable condensers I55 maybe of conventional construction comprising a stator I56 and a rotor I51 cooperating with the stators to tune the set to the desired wave length.

The stanchion I52 comprises a vertical tube I56 having the lower end extending through an opening I59 in the top I69 of the base and secured to a plate .I6I permanently fixed in the base. The upper end of the tube I 58 is threadedly secured to the lower wall of the power pack housing I62 and the latter, in turn, supports the lamp shade I56. The stanchion I52 also includes a tube I63 telescopically engaging the lower end portion of the tube I58 and having a length predetermined to provide for locating the upper end of the tube I63 at a convenient elevation for engagement by the operator. The tube I63 is supported for rotation and the internal diameter thereof exceeds the external diameter of the tube I58 to avoid friction. Upon reference to Figure 21, it will be noted that the extreme lower end of the tube I63 is detachably secured to an inverted cup-shaped member I64 having the peripheral flange I65 extending through the opening I59 in the top I66 of the base I5I and having a driving engagement with a central gear I66. In the present instance, the free or lower edge of the flange. I65 is notched at circumferentially spaced points in the manner designated by the reference character I61 for receiving projections I68 struck upwardly from the periphery of a ring I69 secured to the gear I66.

The above arrangement is such that rotation of the tube I63 effects a corresponding rotation of the gear I66. The gear I66 is rotatably mounted on a fixture I19 secured in the base of the lamp and rests upon the condenser supporting plate I1I The teeth in the periphery of the gear I66 mesh with pinions I12 secured to the shafts I13 of the condenser rotors for adjusting the latter relative to the stators. The arrangement is such thatrotation of the tube I63 effectsv a simultaneous adjustment of the rotors of the sevr eral condensers relative tothe stators thereof.

The tube I63 is rotated by means of a control disc I14 shown in Figure 24 as centrally apertured to receive the fixed tube I58 and to also receive a collar I15. The collar I15 is rotatably mounted on the tube I56 and is slotted, as at I16, to receive a projection I11 on the control I16. The construction is such as to provide a driving connection between the control disc ll land the collar I15 50' that rotation of the former effects a corresponding rotation of the latter. trol disc I14 is positioned axially with respect to the collar I15 by means of washers I18 and I19 threaded upon the collar at opposite sides of the control disc.

The collar I15 is operatively connected to the upper end of the tube I63 by speed reducing mechanism. in order to provide a Vernier adjustment of the variable condensers. In the present instance, the speed reducing mechanism is of the friction type having a plurality of freelyrotatable discs I86 spaced from each otherat equal distances around the collar I 15 and journalled on vertically extending stub shafts I 8 I. -Upon reference to Figure 24, it will be apparent that the stub shafts I8I are supported on a carrier disc I82 freely rotatably mounted on the collar I I5 between a radially outwardly extending flange I93 on the collar and a plate-l84. The plate I84 is, of course, centrally apertured to receive the lower end of the collar I15 and this plate is supported on the collar by means of a disc I85 secured to the plate, as at I86, and having a hub I81 secured to the fixed tube 158.

' It will be noted from Figure 24 that the sides of the revoluble discs I89 adjacent the axis of the tube I58 are frictionally urged into engageme'nt with the upper side of the radially outwardly extending flange I83 on the collar I15 by means of a disc I88 supported on the collar The con- I15 above the revoluble discs I 96 and normally urged into engagement with the'latter by means of the spring washer I89. Peripheral portions of thespring washer are fashioned to provide spring fingers I99 adapted to be compressed by in engagement with the washer I19 supporting the control disc I14 on the collar. The arrangement is such that the inner sides of the revoluble discs are yieldably clamped between the radially outwardly extending flange I83 and the disc I88. The outer sides of the revoluble discs are yieldably clamped between the two rings I9I and I92. The top ring I9! is provided at spaced points with depending strips I93 secured to correspondingly spaced projections I94 extending downwardly from the plate I89. The opposed ring I92 is supported upon a plurality of spring fingers I95 struck out from the plate I8 1 at points spaced around the axis of the collar I15.

Withthe above arrangement, it will be noted that rotation of the control disc I14 by the operator exerts a driving force upon the inner sides of the revoluble discs I tending to rotate the carrier I82 at a corresponding rate. In the event the carrier I82 is rotated as a. unit with the control disc I14, the outer sides of the discs I80 must move through a greater are than the inner sides, and this movement is resisted by the frictional engagement of the rings I9I and I92 with the outer sides of the discs. As a result, the discs I80 are rotated upon actuation of the control disc I14 and the carrier I82 is revolved at a much slower rate than the control disc I14. The differential, of course, depends upon the dimensions of the parts and, in the present instance, is such as to provide the desired vernier control of the variable condensers. In the present illustrative embodiment of the invention, the carrier disc I82 is connected to the upper end of the tube I63 for rotating the latter at the reduced rate by means of a driving disc I96 secured to the upper ends of the shafts I 8I by means of the screwsIS'I and having tongues I98 extending into notches' I99 formed in the upper edge of a ring 200 carried by a cupshaped member 20I. As shown in Figure 24, the ring 200 is fixed to the inner surfaceof the upstanding flange on the cup-shaped member 20I and the latter is secured to the upper end of the tube I63 by means of the collar 202. The cup-shaped member 20I is of suflicient dimension to house the reduction mechanism and to thoroughly conceal the latter from view. 7

One side of the cup-shaped member MI is provided with a slot 203 therethrough for exposing the wave indicating band 204 secured to the inner side of the upstanding flange of the cupshaped member opposite the slot. Thus, it will be seen that the wave indicating band rotates as a unit with the cup-shaped member 20! at the reduced rate effected by the reduction mechanism and the graduations on the Wave indicating band are indicated by means of a fixed pointer 205 secured to the ring I9I in the cup-shaped member and projecting through a slot 206 in the cup-shaped member. The slot206 is of sufficient length to cover the entire band without interfering with the rotation of the cup-shaped member.

In order to provide for varying the resistance controlling the volume and, at the same time, operate the off and on switch from aposition adjacent the condenser control disc I14, the following construction may be resorted to. A tube 2I0 is telescopically engaged with the portion of the tube I58 extending above the condenser control disc I14, and the lower end of this tube is provided with an enlargement 2II shaped to combine with the cup-shaped member 20I in providing an attractive design. Actually, the enlargement serves as a control for revolving the tube 2 I0 relative to the fixed tube I58.

As shown in Figure 21, the internal-diameter of the-tube 2I0 is greater than the outside-diameter of the tube I58 and the former tube is axially positioned relative to the latter tube by means of an annular projection 2I2 extending inwardly from the tube 2I 0 adjacent the lower end thereof and adapted to rest upon an annular projection 2I3 extending outwardly fromthe fixed tube I58. It will be observed from the above figure that the ends of the projections are flat in an axial direction so as to provide an efficient bearing engagement between the two tubes. The upper end of the tube 2I0 is secured to a cup-shaped member 2 I4 of sufficient diameter to receive the lower end 'of the transformer housing I62 and a ring gear 2| 5 is permanently secured to the inner side wall of the cup-shaped member for meshing engagement with a pinion 2 I 6 secured to a vertical shaft 2I'I. The vertical shaft 2I'I and pinion 2I6 are located within the transformer housing and. the latter is slotted, as at 2I8, to provide for extending the periphery of the pinion through the side wall of the transformer housing for engagement with the ring gear 2 I5.

With the above construction, it will be noted thatrotation of the ring gear 2I5 by the cupshaped member 2I4 and tube 2I0 effects a rotation of the shaft 2 I I. This shaft is connected to the combined volume control and off and on switch for controlling the circuit to the receiving apparatus and for regulating the rheostat to vary the volume. Thus, it will be noted that the radio receiving apparatus may be entirely controlled from a unit supported in a convenient position on the stanchion of the lamp.

In some installations, it may be desirable to provide the radio receiving apparatus with a tone control in association with the speaker unit. The embodiment of the invention illustrated in Figure 25 is provided with a tone control and the latter, as well as the variable condensers and the combined volume and oif and on switch, are controlled from a convenient position on the stanchion of the lamp. The variable condensers I55A are controlled by a disc I'I4A in exactly the same manner as defined in connection with the embodiment of the invention illustrated in Figures 21 to- 24, inclusive. In Figure 25, however, the combined volume control and off and on switch I53A is supported in the base I5IA of the lamp below the lower end of the fixed tube I58A. The device I53A is controlled from a position directly above the condenser control disc I'I4A by means of a control 220 having a hub portion 22I sleeved upon the tube I58A for rotation relative thereto and embodying a ring gear 222 adapted to mesh with a pinion 223 secured to the upper end of a vertically extending shaft 224. The shaft is journalled within the tube I58A and the latter is slotted, as at 225, to permit the periphery of the pinion to extend through the tube into meshing engagement with the ring gear. The lower end of the shaft 224 is operatively connected to the device I53A so that rotation of the shaft by the control 220 operates the off and on switch and varies the resistance controlling the volume.

The tone control for the speaker is located in the transformer housing I62A and is controlled by means of the tube 221 telescopically engaging the portion of the tube I58A above the control 220. The lower end of the tube 221 is supported on the tube I58A in the same manner as the tube 2| 0 in Figure 21 is supported on the tube I58, and the upper end of the tube 221 is provided with a cup-shaped member 228 identical in construction to the cup-shaped member 2I4 in that it is provided with a ring gear 229 for rotating the pinion 230 on the tone control shaft 23L Thus, it will be noted that the construction shown in Figure 25 embodies all of the advantages of the constructions shown in Figures 21 to 24, inclusive, with the additional feature that the tone control may be operated from a convenient position on the stanchion of the lamp.

In the embodiment of the invention shown in Figure 26, provision is made adjacent the base I5 IB of the lamp for controlling the variable condensers I553 and the combined volume control and off and on switch I53B. In this construction, the lower tube 63, in both of the preceding embodiments, is eliminated and the central driving gear 168B is rotated directly by the driving disc I553, through the medium of the control H415. The reduction mechanism employed is the same as the one described in detail in connection with the embodiment of the invention shown in Figures 21 to 24, inclusive, and this mechanism is concealed by means of a closure 235 having the lower edge secured to the condenser supporting plate [HE and having an upper edge terminating adjacent the lower side of the control N43. The combined volume control and ofi and on switch I53B is actuated by means of a tube 236 surrounding the fixed tube 1583 and the method of operation is exactly the same as described in connection with the modification featured in Figures 21 to 24 inclusive.

The embodiment of the invention illustrated in Figure 27 shows a' modified form of condenser adjusting mechanism that may be used with either the lamp shown in Figures 1, 11, 16, or 26. As will beobserved in this figure, the central driving gear I660 for the condensers is actuated by means of a ring 231 rotatably supported on the bottom wall 238 of the base 239 of the lamp and connected to the driving gear by means of spokes 245. It will be observed from Figure 2'7 that the base 239 is formed of two sections 24l and 242 spaced from each other a sufiicient distance to provide a slot for receiving the control ring 243. The control ring 243 is secured to the ring 231 and projects beyond the side walls of the base a sufficient distance to permit the same to be conveniently manipulated by the operator. One side of the section 2 of the base is slotted, as at 244, to expose the wave indicating band 245 which is secured to the ring 23l for rotation relative to the pointer (not shown).

The two sections of the base are held in spaced relation to each other by means of the spacers 241 and are secured together by means of fastener elements 248 extending axially through the spacers. It will, of course, be understood that the spacers 24'! are predeterminedly arranged so as to be free from engagement with the spokes 240 during adjustment of the condensers throughout their range.

In Figure 27, the combined volume control and off and on switch 248 is supported in the base 239. This device is actuated by means of a ring 258 surrounding the lower end of the stanchion 25l and seated on the top wall of the section 24! of the base. The ring 250 is held against axial displacement relative to the stanchion 25! by means of an annular radially outwardly extending flange 252 at the lower end of the stanchion adapted to extend over an annular inwardly extending projection 253 on the ring. The ring 256 is operatively connected to a driving gear 254 rotatably supported in the base 239 and adapted to mesh with a pinion 255 secured on the volume control shaft 255. The operative connection between the ring and driving gear comprises a pin 25'l extending through an arcuate slot 258 in the top wall of the base and having the opposite ends respectively secured to the ring 255 and driving gear 254 adjacent the periphery of the latter.

Although a number of different embodiments of this invention have been described somewhat in detail, nevertheless, it will be noted that each modification contemplates installing a complete radio'receiving apparatus in a lamp in such a manner that the same does not appreciably restrict the design of the lamp or render the same cumbersome in appearance. In other words, in each of the several embodiments of this invention, the instrumentalities of the radio receiving apparatus are ingeniously arranged to permit the same to be housed in the minimum of space and'this is of particular importance from the artistic point of view. It will also be noted that in each embodiment of the invention, the rectifier and amplifier tubes are located in the shade assembly of the lamp so that the heat generated by these tubes will not destroy any of the parts of the radio receiving apparatus sensitive to heat and will not interfere with the compact arrangement of these parts. In addition to the foregoing, it will be noted that I have provided novel control means for the several instrumentalities of the radio receiving apparatus and that this means is of such a nature as to permit the same to be cleverly worked into the design of the lamp.

,What I claim as my invention is:

1. In a combined lamp and radio receiving apparatus, the combination of a lamp having a base and a shade unit connected to the base by a stanchion including a hollow upright member having portions of one side wall slotted, a complete radio receiving circuit housed within the several parts of the lamp, said circuit having parts located in the base, other parts including amplifier and rectifier tubes supported in the shade and still other parts insertable into the upright member through the slotted wall aforesaid and supported on the upright member, and a second upright member of hollow construction surrounding the upright member aforesaid to conceal the parts of the radio receiving circuit in the latter member.

2. In a combined lamp and radio receiving apparatus, the combination of a lamp having a base and a shade unit connected to the base by a stanchion including a hollow upright member having portions of one side wall slotted, a complete radio receiving circuit housed within the several parts of the lamp, said circuit having parts located in the base, other parts supported in the shade and still other parts insertable into the upright member through the slotted wall aforesaid and supported on the upright member, and a second upright member of hollow construction surrounding the upright member aforesaid in eccentric relation thereto and being sufficiently larger than the first upright member to provide ample space for accommodating additional instrumentalities of the radio receiving circuit.

3. In a combined lamp and radio receiving apparatus, the combination of a lamp having a base, a stanchion supported by the base and having an inner tubular upright member and having an outer tubular upright member eccentrically arranged with respect to the inner member and concealing the latter, and a radio receiving circuit having parts thereof located in the space provided by the eccentric arrangement of the members.

4. In a combined lamp and radio receiving apparatus, the combination of a lamp having a base, a stanchion supported by the base and having an inn-er tubular upright member and having an outer tubular upright member eccentrically arranged with respect to the inner member and concealing the latter, a radio receiving circuit having parts thereof located in the space provided by the eccentric arrangement of the members, and having other parts located within the inner tubular member.

5. In a combined lamp and radio receiving apparatus, the combination of a lamp having a base, a shade spaced above thebase and a vertical stanchion supporting the shade on the base, said stanchion having a tubular upright member provided with openings in one side wall, a radio receiving circuit having amplifier and rectifier tubes located in the shade and having certain of the parts thereof insertable into the tubular member through the openings aforesaid and supported on said tubular member, and a second tubular member detachably secured to the base and concealing the tubular member aforesaid.

6. In a combined lamp and radio receiving apparatus, the combination of a lamp having a base section, a shade unit supported from the base by a stanchion section, and a radio receiving circuit having tubes and having a loud speaker located in the shade, certain of the tubes radiating more heat than others and being supported in the shade unit and other tubes being compactly arranged in one of the sections aforesaid of the lamp.

'7. In a combined lamp and radio receiving apparatus, the combination of a lamp having a base section, a shade unit supported from the baseby a stanchion section, a loud speaker assembly mounted in the shade unit and a radio ,base by a stanchion section, a loud speak-er assembly mounted in the shade unit and a radio receiving circuit having parts of the receiving circuit including the radio frequency tubes supported in one of the sections aforesaid of the lamp and having rectifier and amplifier tubes supported in the shade of the lamp.

DANIEL J. CROWLEY.

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