US1716538A - Radio apparatus - Google Patents

Description

June 11, 1929. B ACKM I QE 1,716,538,

RADI O APPARATUS Filed Dec. 31, 1924 4 Sheets-Sheet 1 GMW June 1929. c. c. BLACKMORE RADIO APPARATUS Filed Dec 31, 1924 4 Sheets-Sheet 2 02.03 m lazin June 11, 1929.

c. c; BLACKMORE RADIO APAnA'rus Filed Dec. 31, 1924 4 Sheets-Sheet 3 June 11; 1929. c. c. BLACKMORE RADIO APPARATUS Filed Dgc. 31, 1924 4Sheets-Sheet 4 FAWAINN w llivll Patented June. 11, 1929.

enamels c. BLACKMORE, oF nAY'roN, 01110.

RADIO arr'zma'rfis.

Application filed December 31, 1924; Serial No. 759,043.

My invention relates to radio apparatus It is a further object of my invention to and in particular to receiving apparatus.

It is the object of my invention to provide a circular or cylindrical receiving set enclosed within a semi-spherical cover.

It is a further object to provide for the adjustment of certain parts ofthe receiving set such as the condensers by the relative movement of the semi-spherical cover and the base supporting a portion of the apparatus, thussecuring an adjustment and setting of the instrument without the use of the usual dials and knobs which are dif-g ficult to see, tedious to operate and confusing to a person of little scientific knowledge and experience.

. It is my object to provide a set which has great simplicity, ease of adjustment, which will be self-contained and which will 00- cupy the minimum of space,

It is a further object to provide a cover which may serve the dual purpose of a cover, and an adjusting means for the set.

It is a further object to provide such a cover which will reduce outside interferences or eliminate them substantially entirely.

It is an additional object of 'my invention to provide means for indicating the stations which can be secured by bringing the cover and base into predetermined relationship so that once an adjustment is" made for tuning in predetermined stations either at the factory where the set is manufactured or by the user, the same stations can be repeatedly secured by merely turning the parts relative to one another so that a pointer or the like will be placed opposite to the predetermined position of the station as indicated in plain language on the dial either by wave length, symbol for the station or the name of the city in which the station is located. Thus it is possible to tune in on the station desired by placing the pointer opposite the point where such city and station is marked onthe dial.

' It isa further object of my invention to provide an indicating means in which said designations may be readily interchanged to take care of changes in wavelength, stations, etc.

' It is an additional object to provide suplementary adjustments such as a Vernier adustment and a detector rheostat adjustment. It is my object to provide-simple evers for controlling such adjustments the apparatus carried 'upon the base of the instrument being omitted for the purpose of clearness in the drawing;

Figure '3 is a section onthe line 33 of Figure 2; 1

Figure 4 is an elevatioh of one corner of the instrument showing a modified form of pointer location andscale of location;

Figure 5 indicates a section and fragmentary elevation of the preferred form of scale or indicating band having detachable strips for indicating the desired stations;

Figure 6 is a similar view showing a trans parent strip carrying the designations of the stations. upon if the designations are not placed behind it;

Figure 7 is a section on the line 7-7 of Figure 1; v

Figure 8 is a typical diagram showing a system of wiring adapted to carry out my fhis strip may' also*be written invention but I do not desire to be confined to any particular wiring-arrangement of my invention;

Figure 9 is a plan view of the'instrument board partially broken away to 'shovg' ceras that has nothing to do withthe essentials.

of, I igure '10'is an elevation of the receiving set with a looped antenna mounted thereon;

Figure 11 is a section on the'line 11- 1 1 of Figure 10 looking in the directionof. the

tain adjusting means below the level therenum, adapted to rotate above a stationary base 2, which base forms the support for an instrumentboard. It also carries a standard 3 upon which .is

cover 1.

pivotally mounted the The lower margin of the cover 1 carries stations. This series of stations may be i11 (heated preferably by a series of detachable paper strips 4:placed beneath a band 5 cated on the lower margin of the cover 1;

' This band has openings (5 for writing on the strips 4. The band may be supported by a turned up U-shaped edge 7 formed on the lower rim of the cover 1. I

If desired, instead of the band 5 with a series of spaced openings 6, I may use a continuouastrip of-paper or the likes behind a. continuous strip of celluloid 9, or the strip 9 may be ofsuch material that the designations may be. Written or printed or otherwise inscribed upon the strip.

Such methods of mounting are suggestive but it is, ofcourse, obvious that the designationsmay be imprinted upon the lower margin of the coverl before it leaves the factory. Again, I desire'to comprehend within' my invention the relative movement of the baseand the cover so that insome instances the base itself may be moved wlth the 'cover stationary, Again, it is possible, as I have shown in Figure 4, to mount the pointer 10.

on the cover, locating the scale or indicating band or the indications in any desired fash ion on the banditself, as at-11..

Th'c'set may be adjusted at-the factoryso that-when the pointer and scale are brought-- to predetermined superimposed relationship the set will be in adjustmentto receive from1 the stations so indicated on the indicating band or scale, or the owner-'ofthe'set may tune in-on the stations and upon doing so can then indicate the adjustin'ent of the parts so that the same adjustment to secure the same station may be repeatedly. gotten by simply bringing the scale-and pointer into predetermined relationship.

, referring to Figure 3 it will be noted that the cover 1 is mounted upon a sleeve 12 and fastened thereto by a pin 13. This'pin also clamps awasher L1 in posltlon. A set screw 15 retains the scveral'parts in locked ongagement. The. sleeve 12 (2111'163 integral post 3 on which rotates the sleeve'12. 'Alset" screw-26' carried by: the sleeve '12 projects into a groove 27 in the stationary standard therewith an actuating gear 16 having teeth 17 'meshi-ng with the condenser gears 18 which are mounted on condenser gear shafts respectively designated 19. These shafts are journalled in the usual. end plates 20 and 21.

The condenser shaft 19'ca'rri'es a plurality. of condenser plates 22 which rotate there with in the usual manner while the connecting shaft 23 carries a plurality of'stati-onary condenser plates24. No claimis made to the particular formof condenser as this may v be widely varied. The condenser is mounted upon a bracket 25-"carried on the stationary 3 to prevent the cover from being lifted off with the sleevefrom the standard. If it is desired to remove the cover independently of the sleeve this may be effected by. loosening the set screw-15.

. It will be noted that'from the size of the gears that there isa two to one movement so that the desired rotation of theconden'sers andv the" desiredjadjustmentithereof ass-eon sequence maybe secured to'the full extent by the rotation of the housing throughout.

the relative movement of the cover and base."

The base consists of an upper instrument board 28 and a lowerv plate or r ng 29 connected by a side wall 30 in which are the" slots 31 for permitting" of the movement ofvarious handles such 1 as I, the Vernier condenser handle 32 and the adjusting Vernier condenser I generally designated The handle 34 of the detector. rheostat for controlling tube filam'ent, temperature also projects through a slot in-tliewall 30'. A lever '35 is used "for controlling the: resistance which regulates the volume of reception.

v The instrument. board carries any number or combination ofitems used in sets which may vary from. time to time. A' typical in ,stallation is shown in Figures 8 and 9 where 36 indicatesthe tube sockets, 37 the location of audio frequency transformers, 38 tuning inductances, 39 a ground binding post, 40 an antenna binding post, 41 and 42 the terminals of theA batteries, 43 and 44 they termiv i nals of the vB batteries and 45. and 46 the terminals of the C batteries: I

Referring to the supporting and mounting means .for the looped aerial as shown in 7 Figures wand 11, 1 is the housing or cover' mounted on the collar 47 which is internally threaded at 48 to receive an externally threaded sleeve 49 which serves to clamp the cover in position. Passing through this sleeve is the shaft '50 of insulating material carrying the wires 51 and 52 of the antenna.

This shaft passes downwardly through a second sleeve v53 which is threaded into-the top of the insulating sleeve '54. This sleeve 53 has an overlapping head 55 overlapping the head of a. sleeve 56 which is integralwith both the'sleeve 47 and the gear 16; The

cut away at 58 and59 to expose the contact bands GO-an'd 61 on the member 50. The- "wires 51 and 52'respectively are in electrical contact with the bands 60 and 61. These bands. are in constant engagement with the I sleeve 56 is mounted on a shoulder 57 of the sleeve of insulating material 54 so that the spring fingers 62 and 63 fastened on thecolumn 54 to which are attached wires 64 and 65 by set screws 66 and 67 68 indicates the jack for the phones or loud speaker. It will be understood that I desireto comprehend within my invention such modifications as may be necessary to adapt it'to varying conditions of use. I

Having thus fully described my invention,- what I claim as new and desire to secure by Letters Patent, is

1. In a radio receiving set, a base, a revolving cover, means on said base to support said cover, means on the supporting means for supporting a condenser, means associated with the cover to actuate said condenser carried on said supporting means, whereby as the cover is rotated the condenser is adjusted for reception of messages from various stations, and means associated with said cover and base for indicating the setting of the relative position of the cover and base and the condenser necessary for putting the setin communication with the desired stationindicated, whereby as the cover is moved to a predetermined position indicated by desig nation of the station on the indicating 1 means, the condenser will be so adjusted that messages will be received from that station. 2. In a radio receiving set, a base, a semicylindrical cover, a support for said cover, a sleeve carrying said cover and rotatably mounted on said support, a gear fixed on said sleeve, a variable condenser mounted on said support, a second gear associated with the movable elements of the condenser for adjusting it and meshing with the first mentioned gear whereby as the cover is rotated the capacity of said'condenser is varied.

, 3. In a radio receivingset, a base, a. semicylindrical cover, a support for said cover, a sleeve carrying said cover and rotatably mounted on said support, a: gear fixed on said sleeve, a variable condenser mounted on said support, a second gear associated. with the movable elements ofthe condenser for adjustingit; and meshing with the first mentioned gear whereby as the cover is ro-' tated, the capacity of said condenser is varied, and means carried on said set c0nsisting of a scale and pointer whereby when the pointer is brou ht to a predetermined point over the scale t e condenser will be adjusted to receive a message from such predetermined-station. I

4. In a radio receiving set, a base for supporting radio receiving apparatus such as tubes inductances, variable condensers, transformers and-thelike'and terminals for batteries, antennaand speakers or phones, a revolving cover operatively connected with said condenser adapted by its revolution to adjust the condensers to tune in a desired station, a scale on the revolvingscover indieating stations, and apointer-on the base which when brought adjacent a predetermined -station on the cover scale will indicate the adjustment of the condensers for receiving messages from that station. Y

5. In a radio receiving set, a base, a cover supported thereover and rotatable relatively thereto, means within said cover carried by said base adaptedfor the selective reception of transmitted energy, means carried by said cover to adjust said selective reception means, whereby if the cover is rotated relatively to the base the selective reception means will be positioned to receive messages from various stations, and supplementary means T carried by. said base for efiecting a finer adjustment of the selective reception means. 6. In a radio receiving set, a base, a cover supported thereover and rotatable relatively thereto, means within said cover carried by said base adapted for the selective reception of transmitted energy, means carried by said cover to adjust said selective reception means, and indicating means to guide the operator in moving'the cover so that messages may be received from the desired station.

7. In a radio receiving set, a base, a cover supported thereover and rotatable relatively thereto, means within said cover carried by said base adapted for the selective reception of transmitted energy, means carried by said cover to adjust said selective reception means, and means associated with said cover,

and base for indicating the setting of the relative position of the cover and base necessary for tuning in the desired station indicated whereby asthe cover is moved to a predetermined position indicated by designation of the station on the indicating means,

.the selective reception means will be so adjusted that messages will be received from 'the desired station.

8. In a radio receiving set, a base, a stand ard carried by said base, a cover rotatably mounted on said standard, a gear carried by said cover, variable'condensers supported by said standard, shafts to carry the movable members of said condensers, gears mounted on said shafts and meshing with the gear on said cover? the ratio'between the-gear carried by the cover and the gears associated with the condensers being two to one, whereby one revolution of the cover will effect a complete variation in the capacity of. the condensers:

9. In a radio'receiving set, a volving cover, means for supporting said cover, a gear associated with said 'cover,

a plurality of condensers, gears associated with said condensers and engaging the-gear of said cover whereby as the cover is rotated the condensers are simultaneously adjusted/ 10:, In a radio receiving set, a base, a revolving cover, means for support ng said cover, a gear associated with said cover, a

. base, a redetermined station is brought to a prede- "tionlof a message from the station so inditermined point indicating a predetermined 'TGlfitlOIlSlli]? between the cover and the base the condenser Wlll be arranged for the recepcatedon the indicating means at the predetermined point of relationship between the cover and the base,

11 Ina radio, receiving stit, a base, a revolving cover, means for supporting said cover, a gear associated with said cover, a plurality of admstable condensers, gears for said condensers meshing with the cover gear whereby as the cover is rotated the condensers are simultaneously adjusted, and means associated with the base and revolving cover for indicating stat-ions whereby when a predetermined station is brought to a predetermined point indicating a predetermined relationship between the cover and the base the condensers will be arranged for the reception of a message from the station so indicated on the indicating means at the predetern'nned point of relationship between the cover and the base, said base supporting a plurality of instruments for radio reception.

In testimony whereof, I affix my signature.

, CHARLES C. BLACKMORE.

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