US1978920A

US1978920A - Combination clock and radioreceiver

Info

Publication number: US1978920A
Authority: US
Publication date: 1934-10-30
Anticipated expiration: 1951-10-30

Description

Oct. 30, 1934. H. R. VAN DEVENTER El AL 1,978,920

COMBINATION CLOCK AND RADIORECEIVER FiledApril 7, 1952 6 Sheets-Sheet 1 INVENTORS HARRY JP. IAIYDEVl/VJ ZR ATTORNEY Oct 3 934- H. R. VAN DEVENTER ET AL 1,978,920

COMBINATION CLOCK AND RADIORECEIVER Filed April 7, 1952 6 Sheets-Sheet 2 INVENTORS JE ARRY R.VAJVDEVZ'1YTL7Z JQSZ'PH A. WARREN ATTORNEY Oct.30, 1934. H. R. VAN DEVENTER ET AL. 1,973,920

COMBINATION CLOCK AND RADIORECEIVER FiledApril 7, 1932 6 Sheets-Sheet 3 INVENTOR 8 114213) R. WNDEVENIZ'K ATTORNEY Oct. 30, 1934. H. R. VAN DEVENTER ET AL 1,978,920

COMBINATION CLOCK AND RADIORECEIVER Filed April '7, 1932 6 Sheets-Sheet 4 12 INVENTORS 10112120 12. )WVDEVENYEK JOSEPH A "HEREIN ATTORNEY Oct. 30, 1934. H, R. VAN DEVENTER ET AL 1,978,920

COMBINATION CLOCK AND RADIOREGEIVER Filed;April 7, 1932 e Sheets-She et 5 Mimi I INVENTORS HARRY R. WUEIZWYER ATTORNEY Oct. 30, 1934. H. R. VAN DEVENTER ET AL 1,978,920

COMBINATION CLOCK AND RADIORECEIVER Filed April 7, 1932 6 Sheets-Sheet 6 Q INVENTORS HARRY k. WJNDEITZVTER BgflJEP/l H. WARREN ATTORNEY 35 Figure 4 is a vertical sectional View of Patented Oct. 30, 1934 PATENT OFFICE UNITED STATES COMBINATION CLOCK AND RADIO- RECEIVER Application April 7, 1932, Serial No. 603,791

18 Claims.

of the radio receiving set except the loud speak- 1 er is readily removable from the cabinet without disassembly.

Another object is to provide a combination device of the class described in which the clock may be set from the front of the cabinet and is supported in the cabinet without being mounted on the radio chassis. i

The invention consists substantially in the construction, combination, location and relative arrangement of parts, all as will be more fully hereinafter set forth as shown by the accompanying drawings and finally pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a front elevation of a combina: tion clock and radio receiving set embodying the invention;

Figure 2 is a side elevation of the set, Figure 1; 1

Figure 3 is a side elevation, partly in section, of the set shown in Figures 1 and 2;

the set, Figures 1 and 2, with the front of the set removed in order to show the radio chassis and the loud speaker parts in place within the cabinet;

Figure 5 is a horizontal sectional view of the set on the line 5-5 of Figure 4;

Figure 6 is a horizontal sectional view of the set on the line 66, Figure 4;

Figure 7 is a front view of theradio receiver chassis removed from the set, Figure 1;

Figure 8 is a side view of the chassis, Figure 7; and

Figure 9 is a typical circuit which may be used in the combination clock and radio receiving set.

For the sake of illustration, the invention will be described as applied to a combination clock and radio receiver of the type above referred to, and although the invention will be disclosed herein and specific details of preferred emboditive of the invention except in so far as set forth in the accompanying claims.

The numeral 10 denotes acabinet which may be made of wood or other suitable material. In the front of this cabinet is an opening 11 for the clock and an opening 12 for the dial and knobs of the radio receiver chassis. The cabinot also'has two

openings

13, 14 in the sides thereof to permit egress of sound from the loud speaker as hereinafter described. These openings may be covered by a cloth 15 to prevent the ingress of dirt and the cloth may be protected by a grille 16.

Secured to the front of the cabinet is a clock movement generally denoted by the numeral 17. This clock may be of any suitable type, either the ordinary hand wound spring driven type or as shown, a clock of the electric synchronous motor type.

The clock movement is preferably mounted upon a face plate 18 which secures the same to the cabinet and attached to this face plate is the dial and the hinged sash 19 containing the Q usual glass crystal covering the dial and hands.

When an electric clock is used the motor isprovided-with a pair of extended flexible wires (not shown) for the purpose of connecting it in circuit as hereinafter referred to.

Secured to the bottom of the cabinet is the base 20 preferably of metal and sufliciently strong to withstand the bending action of a piezo-electric crystal 21 which is insulatedly secured thereto by means of the

bolts

22, 22.

The

bolts

22, 22 pass through

clamps

23, 23 secured to the sides of the crystals, said clamps having extending arms which are turned upwardly as shown at 24, 25 and which are at-' tached in any suitable manner to the lower 95,

edges

26, 27 of a diaphragm 28, which covers practically the entire side walls and top of the interior of the cabinet.

This diaphragm is-preferably secured at 29 to the cabinet and when vibrated by the action 100 of the piezo-electriccrystal in a known manner the sound produced finds egress through the

openings

13, 14 in the cabinet.

A pair of flexible wires (not shown) are connected to the piezo-electric crystal, or to the 0

bolts

22, 22 which are in circuit therewith and may be used to connect the crystal in circuit with the other parts of the radio set as hereinafter described. i

It will now be observed that the cabinet 10 is 1.

equipped with a clock and with a loud speaker and that the drivingmechanism for the loud speaker is so disposed within the cabinet that it does not occupy much room, and the diaphragm framework or chassis which may be of alumi- I num or other suitable material and of any desired construction. It is preferably made from a flat stamping having theedges turned over and spot welded. w

The sides of the framework extend downwardly and are bent inwardly to form ears or

lugs

31, 31, which engage the

rails

32, 32 which are attached to the bottom framework of the cabinet. These rails are provided on their rearwardends with the

spring latches

33, 33, and the pins connecting with these spring latches engage and hold the lugs and consequently the entire chassis securely in place. i

i In order to remove the chassis, the spring latches 33; 33 are pushed upward thereby withdrawing -the pins connected thereto from the holes in the

ears

31, 31 as shown in Figure 3 and the entire chassis is pulled out of the cabinet used the various instrumentalities to be mounted uponthe chassis are not described in detail but byway of illustration a chassis is described in which thecircuit and component parts are as shown in Figures 7 to 9 inclusive, and include two 4 microfared electrolytic filter condensers designated by the

numerals

34, 34 which are bolted to the topwall 35 of the framework 30.

Mounted upon this top wall and secured thereto in anysuitablemanner is a suitable -2-gang tuning condenser 36, theprojecting shaft carrying the movable plates of same being equipped with a pulley 37 to whichis connected a fleaible wire belt or other suitable member 38 which is wrapped about and secured to the lower pulley 39 secured to a sleeve 40supported upon a shaft 41 upon which it is free to turn. Rigidly secured to the sleeve 40 is the control knob 42 provided with the usual dial 43.

When the chassis is in place in the cabinet the dial 43 may be observed through the opening 44 in the plate 45 and by turning the knob 42 the tuning condenser may be adjusted in the usual manner. I

The shaft 41 extends outwardly through the knob 42 and has upon its outer end a volume control knob 46 and secured to its inner end a suitable volume control shunt 47, supported on the intermediate wall 48 of the framework 30.

Between the

horizontal walls

35 and 48 is suitably secured a support 49 of insulating material on which are mounted the usual flex-- ible springs or other socket members, some of which are shown at 50, 50 for the

vacuum tubes

51, 51. The tubes shown in the accompanying drawings are of a special type but it will be understood that any suitable type may be used. These tubes are provided with the usual insulating bases 52, 52 which pass through holes in the topwall 35 and the usual projecting pin ment current to the

tubes

51, 51 it being underthrough holes in the shields so thatthey may be connected in circuit.

A power transformer 56 is mounted on a side wall 57 of the framework 30 and supplies filastood that any suitable number of tubes may be employed depending upon the circuit used. The choke coil for the filter circuit is shown at 58 and is mounted on a side wall 59 of the framework. Grounding condenser 60 may be mounted upon the intermediate horizontal wall 48 as shown. 1 I

a The output choke coil 61 is also mounted on the intermediate wall 48 as shown in Figure 4. e The foregoing constitute the main parts of 106 the chassis assembly and there are a few additionalparts used in connectionwith the circuit shown in Figure 9 which are mounted within or upon the complete chassis as shown in Figures 7 and 8, and these parts will be described in connection with the circuit shown in Figurei).

As the shape and location of these parts may vary within wide limits they have not been shown in connection with Figures 3 to 6 inclusive for the sake of clarity.

The complete chassis as just described is wired up as shown in Figure 9, a binding post 62 (not shown) being insulatedly mounted on the chassis for connection to the antenna. A binding post 63 is connected to the framework 30 and constitutes a common ground for thegro'un'dside of all of the various circuits.

A switch indicated diagrammatically at 64 in Figure 9 forms part of the volume control shunt 47 and is operated by the knob 46. When the knob is turned from the extreme left hand position clockwise it first closes the switch and then places more or less of a resistance 47 in circuit. As such combination switches and resistances are in common use they are not herede scribed in detail.

The detector tube in this circuit is indicated at 65; and this together with thefour. amplifier tubes 51,-are connected in circuit as shown, the plates and external grids of said tubes being connected to the plate voltage feed 66 of the igansformer circuit through suitableresistances A high resistance 68 connects from the plate voltage feed to, the ground. A mercury vapor rectif er tube 69 is provided in circuit with the windings of the transformer 56, the usual 110 volt alternating current supply being connected to the binding posts 70 insulatedly supported at any suitable place on the chassis. When an electric clock is used, the driving motor of same is connected directly across the binding posts 70 as shown at 1'7, Figure9, so that the clock will not be disconnected when the switch 64 is operated. i

A pair of insulatedly supported binding posts '71, 71 are provided to which the wires from the loud speaker herebefore referred to are con:

nected when the chassis is in place, the piezo I50 tenna 62 and ground 63.

electric loud speaker being designated by the numeral 72 in Figure 9.

A small lamp 73 is mounted on the intermediate wall 48 and is connected across the filament supply circuit as shown. When the radio set is turned on, the light from this lamp shines through an aperture in the front wall '74 of the framework and shines through the translucent dial 43 which is carried on the knob 42 and the dial may be observed through the opening 44 in the plate 45, Suitable connections '75, 75 (not shown) are provided on the chassis in order that when the same is in place the wires from the clock motor 17 (Figure 9) may be connected thereto. v.

In operation the chassis shown in Figure 7 carrying all of the parts of the radio set except the loud speaker is pushed into place in the cabinet as previously described and when in place occupies the position in respect to the loud speaker and clock as shown. in Figures 3 and 4, the connections being made between the speaker and its binding posts 71 and between the binding posts '75, 75 for the connections to the clock, an-

Connections being made and the terminals 70 connected to a suitabl source of alternating current supply, the clock will immediately proceed to operate and by opening the hinged sash 19 the clock hands may be set without removing the chassis from the cabinet.

By operating the projecting

knobs

42 and 46, the radio set may be turned on and the tuning condensers operated and the volume of the set regulated.

While the radio set is in operation the lamp 73 will be lit. When the radio set is not in operation this lamp will be extinguished as it is controlled by the switch 64.

, If it is desired to remove the radio chassis from the cabinet the same may be removed as heretofore described.

Thecabinet may be provided with a removable back (not shown) and is preferably provided with rubber cushioned feet.

If desired, the detector tube and any of the amplifiers 51 may be shielded by means of the metallic shields 76 secured to the top wall 26 of the framework.

What is claimed is:

1. A radio receiver including a cabinet, a framework removably supported in said cabinet and containing radio detecting, amplifying and tuning means, a diaphragm surrounding the side walls of said framework, and means comprising a speaker driving mechanism for vibrating said diaphragm mounted on said cabinet subjacent said framework.

2. A radio receiver including a cabinet having a base portion, a framework adapted to support parts of the radio receiver including radio detec ting, amplifying and tuning means removably supported in said cabinet above the base portion thereof, a diaphragm within said cabinet having an edge extending downwardly toward the base thereof, and means comprising a speaker driving mechanism for vibrating said diaphragm mounted in the base portion of said cabinet below said framework.

3. A radio receiver including a cabinet having a bottom portion, a framework removably supported in said cabinet above the bottom thereof and containing radio detecting, amplifying and tuning means, a diaphragm having an edge extending downwardly toward the bottom of said crystal secured to said plate, and a diaphragm located in said cabinet above said plate, secured to said crystal and adapted to be vibrated thereby.

5. A radio receiver including a cabinet having openings in its sides and containing radio detesting; amplifying and tuning means, a plate closing the bottom of said cabinet, a piezoelectric crystal secured to said plate, and a diaphragm secured to said crystal and adapted to be vibrated thereby said diaphragm extending around the inner side walls of the cabinet and having free vibratory portions adjacent the openingstherein. p

6. A radio receiver including a cabinet, and containing radio detecting, amplifying and tuning means, a base member adapted to close the bottom of said cabinet, a piezo-electric crystal secured to said member, a diaphragm within the cabinet having its surface in extended relation to the inner side walls and top thereof, and means for detachably securing said diaphragm to said crystal. i

7. A radio receiver including a cabinet having a rounded top and containing radio detecting, amplifying and tuning means, a base member secured to said cabinet, a piezoelectric crystal secured to said base member, a diaa phragm within said cabinet secured to said crystal and extending along the sides andacross the top of the cabinet, and means for securing said diaphragm to the inner wall of the cabinet at a point intermediate its ends.

8. A radio receiver including a cabinet, a piezo-electric crystal mounted in said cabinet, a diaphragm connected to said crystal in said.

cabinet in extended relation to the side walls an open space within the cabinet, a framework adapted to support parts of said radio set removably positioned within said space within the cabinet, a tuning condenser and a volume control mounted on said framework, and control means including knobs connected to said condenser and volume control extending from the front of said cabinet.

9. A radio receiver including a cabinet having a front wall, a framework having a top wall and removably supported in said cabinet, a variable condenser having a shaft and mounted upon said top wall, a sleeve mounted in said framework and extending from the front thereof and through the front wall of said cabinet, means connecting said sleeve and shaft whereby the latter may be movedby rotating the former, a shaft in said sleeve extending outside said framework and cabinet, and a combination volume control and switch carried on said framework connected to said last shaft and movable therewith. i

10. A radio receiver including a cabinet, a framework removably supported in said cabinet, a variable condenser having a shaft supported on top of said framework, a control shaft supa sleeve surrounding said shaft, a connection between said sleeve and the shaft of said condenser, a volume control connected to said control shaft and supported in said framework, and knobs mounted upon said sleeve and shaft located outside said cabinet whereby the control of said radio receiver may be effected. 11. A radio receiver including a cabinet, a framework removably supported therein said framework having substantially :closed sides, front and top, and being open in theback and bottom, a variable condenser mounted on the top of said framework, a support of insulating material within the framework and below openings therein socket members secured to said support,.a plurality of vacuum tubes mounted in said socketmembers through the openings in said framework, volume control means mounted onsaid framework below said condenser, and meansfor adjusting said volume control means and said condensers extending from said framework and through the wall of said cabinet.

12. A radio receiver including a cabinet, a

clock mechanism mountedin the front thereof, a hinged sash mounted on the front of said cabinet and adapted to cover the dial and hands of said clock, a shafthaving a sleeve rotatable thereon extending from the face of said cabinet below said clock knobs securedto said sleeve and shaft, a tuning condenser and a control device connected to said sleeve and shaft and movable therewith, a framework upon which said control device, condenser, sleeve, shaft and knobs are supported, said framework being removable as a unit from the cabinet without disturbing said clockand connections in said cabi net whereby said clock and radio receiver may be operated from a single current source.

13. In a radio receiver a removable chassis comprising a framework having an apertured top wall, filter condensersmounted on said wall, variable tuning condensers comprising a framework carrying fixed and movable plates and a shait mounted upon said wall, vacuum tubes in the aperturesin said wall, a support of insulating material having socket members thereon positioned below the apertures in said wall and adapted to receive the terminals of said tubes, metallic shields for said tubes mounted upon said wall,,a cabinet adapted to contain said chassis and a speaker having a diaphragm secured to said cabinet and surrounding the top and sides of said chassis. 1

14. In a radio receiver a chassis comprising a frameworkhaving a top wall, a variable condenser mounted thereon having a shaft, a plurality of tuning coils mounted below said top well, said coils having shields secured to said wall, a volume control member secured to said chassis below said tuning coils, means. for regullatingsaid volume control extending from the frontof said chassis, means supported by said volume control means and connected to the shai't of said variable condenser and extending outsidesaid chassis whereby the capacity of said condenser may be manually varied, a plurality of vacuum tubes mounted upon said chassis, a transformer mounted within the chassis and a cabinet having means engagingprojecting lugs on said chassis whereby the chassis containing all of the, aforementionedparts maybe remove ably locked in position within thecabinet. J 4 g1 15. A combination clock and radio receiver comprising a cabinet. having openings, in each side and thefront thereof, an electric clock se cured in the from opening of said cabinet, a loud speaker diaphragm adjacent the side openings in said cabinet, means for, actuating said diaphragm mounted inthe bottom of said cabinet leaving a clear space, in the interior thereof, a romovableichassis adapted to carry upon its walls'radio receiver parts to operate, said means, said chassis being positioned in the:clear &mce in the interior of, said 2 cabinet, control means mounted upon said chassis and extending through the front of said cabinet andta circuit including a .source of .acurrent, connected to said chassis and adapted to furnish current to saidradio receiver parts and to said electric :clock mechamsm. a a i 16.1 A combinationclock .and radio receiver comprising an outer. cabinet, :an electricclock secured to the front wall .of said cabinet inlthe upper portion thereof, aloud speaker having its actuating mechanism, secured to the bottom of said cabinet and its diaphragm adjacent the side walls thereof, a removable chassis adapted to carry upon its walls radio receiver parts including a variable condenser positioned the upper part of said chassis, said condenser having a shaft substantially parallel to said clock shaft, control means for said condenser including a shaft extending throughthe wallof said cabinet, volume control means for said loud speaker mounted upon said chassis and including means extending through the front of said cabinet foroperating said control means and a circuit including a source ofycurrent connected to said chassis and adaptedto furnish current to said radio receiver parts and to said electric clock. 1 i i 1'7. The combination as claimed in claim 16 including a switch controlling theoperation of said radio receiver operable from outside said cabinet and mounted uponsaid chassis and removable therewith. A i

18. A combination clock and radio-greceiver comprising a cabinet, an electric clock secured to a wall of said cabinet, aloud speaker having its actuating means mountediri the bottom of said cabinet and its diaphragm adjacent the inner side walls thereof, [a removable chassis adapted-to-carry upon its walls radio receiver parts to operate said speaker actuating means, a volume control forsaidspeaker mounted upon said chassis, a variable condenser mounted upon said chassis, a switch associated with said vol ume control means, ,means including concentrio shafts connected to said condenser and volume control ,means and extending outwardly connected to the shaft associated with said condenser, a lamp mounted on ,said chassis adapted to illuminate said dialand a circuit including a source of current connected to said chassis and adapted to furnishcurrent to said radio receiver parts, said lamp and said clock.

HARRY R. VAN DEVENTER. JOSEPH A. WARREN. 1

through a wall of said cabinet, a graduated, dial