US1656085A

US1656085A - Jamxs s

Info

Publication number: US1656085A
Authority: US
Publication date: 1928-01-10
Anticipated expiration: 1945-01-10

Description

Jan. 10, 1928.- 1,656,085

J. S. SF'AINHOUR RADIOPHONOGRAPH Filed Nov. 27. 1925 2 Sheets-Sheet 2 mvemok JAMES 5. j mrmouz.

B Y Y TORNEY advent-a Patented Jan. 10, 1928.

unirnnsrarns PA-rtnr orri MLJQ JAMES E. SPAINHUUR, OF HEMFEYIEAD, YORK, ASSIGNUItt 01? O'llllLEJ-t T111113 T J'GEEPI-it H. CUE-1131i, 0F WTEEll "HEMPSTEAD, NEW YORK.

ItADl'Ol-HONOGRAPH.

Application filed Novel-nicer 27, 1925. Serial No. 71,607.

My invention relates to radio phonographs.

Radio phonographs, so-callcd, have heretofore been used. No true CO111lJi112Ll'lO11,l1OW- ever, priqr to the present invention, of a radio receiving unit and a phonograph unit, has ever eiristed. The nearest approach thereto, of which 1 am aware, that resulting from the mere joint enclosure of the two distinctly separate and Wholly independently acting units or instruments in a common cabinet or housing.

The principal object of the present invention is to effect such combination. Instead of constructing the radio receiving set as a single unit and associating with it a separate and complete phonograph unit, said two units are built in combination. That to say, certain parts or elements of the radio phonograph, for the reproduction of sound mechanically, function as phonograph parts, whereas, suchpart or parts, in the use of the instrument as radiounit, function in a different capacity, i. o., as necessary parts of the radio receiving apparatus. The ,es of a combination instrument thus characterized are obvious.

it more specific object of the invention is to so interconnect the revoluhle table of the conventional type phonograph with the variahle condenser of any conventional type electrical adio circuit as to admit of the use of the former, either as a phonograph record table in the ordinary manner ores a tuning condenser dial. Being relatively large, the record table, if used as a tuning condenser dial, is advantageo in that the finesse of control of the radio unit is very appreciably augmented.

A further object of the invention is the provision of a simple and positive means for cutting in or cutting out, it were, the record table or tuning condenser dial of the instrument to accordingly render it useful or essential in either capacity desired.

Other objects and advantages oil? the invention, of which there are 1112111), will be hereinafter setforth.

in the drawings, wherein like reference characters denote like or corresponding parts,

Fig. 1 is a front elevation of the radio phonograph Fig. 2 is a transverse sectional view;

Fig. 3 is a plan vieW (partly broken away) Fig. i is a section on the line 41- 1; of Fig. 3;

Fig. 5 1s a fragmentary sectional view of the cabinet illustrating the operatin g mechanism for rotating the tuning condenser dial;

Fig. 6 is an elevation of the clutch and a portion of the operating mechanism thereof;

Fig. 7 is a face vievv of that part of the clutch operating mechanism illustrated in F 6, and

Fig. 8 is a transverse vertical sectional view of a modified radio phonograph structure.

As intimated, the invention contemplates phonograph unit and a radio receiving unit in combination. Any character of phonograph unit may he einployed. Also, if desired, any character of radio receiving unit may be employed. Tuned radio frequency or stabilized heterodyned radio circuits, using but a single dial, however, are preferred.

In the embodiment of the invention selected for illustration, a radio receiving unit, comprising such. Well known radio instrumentalities as a condenser 10, a transformer 11, a coil 12, and one or more tubes 13, is shown. The condenser 10 is preferably of the threegang variable type. Such a condenser is preferred in that it gives synchronized capacity in tuning three radio frequency transformers throughout the broadcasting range and at all points (Within certain limits) in resonance with the incoming Wave or Waves. Other types of condenser, however, may he used.

Both the phonograph unit and the radio receiving unit are enclosed in a suitable cabinet, designated in its entirety, as 14-. Such cabinet comprises legs 15 (four in number), a cabinet top 16, a base portion 17, side Walls or panels 18, and a built in tone chamber or horn 19 of any conventional form. The phonograph unit, except. for

i the revolving table 20, is of ordinary con casting 24 so formed and constructed as to provide, within the cabinet, three or more bearings 25.. The two upper bearings of the casting have journaled therein a vertical drive shaft 26 connected by a worm 27 and a gear 2Swith the spring or other type motor Said shaft 26, at its upper end, is carried thru and beyond the cabinet top to extend thoreabove as shown. Upon its extended end, the revolving table is mounted. In the use of the combination radio phonograph as a phonograph unit, said table 20 functions solely as a record table.

on the inside of the cabinet l gand in axial alignment with the drive shaft 26, I provide a secondshaft 29. This shaft 29 is fastened slida bly, as at 30, to one of two grid-shafts 3i and 32, each having mounted thereon a multiple number of co-acting grid-plates. Collectively, the grid-plates of the two'shafts 3 1 and 32 constitute the variable condenser 10. To relatively move sa1d plates, meshmg gears 33 and are p ovided] One of said gears, the gear is mounted on the grid-shaft 31, whereas the other of saidgears, the gear 3%, is mounted f on the grid-shaft 32. Obviously, thereare, to relatively move oradjust such ooand 29.

acting grid-plates, all that is necessary is to rotate orturh the shaft 29.

The shaft 29, in addition to being rotatable, is also axially movable. At its inner or upper end it is slidably journaled in the lower bearing 25 o f the casting. The sliding or axial movement of said shaft 29 is adapted to make and break clutch connec ,tion between said shaft and the drive shaft 26, provided at said inner or upper shaft end. This clutch connection (see Fi 6) comprises co-acting clutch members 35 and '36 carried respectively by said shafts 26 v I One of said clutch members, i. e.,' "the clutch member carried by the shaft 29, has formed therein an annular groove 87.

Within this groove37 the forked end of an arm 38 fastenedto avertically sliding rod 39 is seated. Said rod 39 is mounted at one side of the clutch connection and is adapted to be operated by an eccentric L0 7 having its peripheral surfaeein bearing contact with said rod. A spring ll, encircling "the rod 39 and bearing at its opposite end "againstan abutment 1-2 on said rod and against the lower bearing 35 of the casting,

tonstantly'urges said rod 39 toward, and

[maintains at all times contact between, said 'rod and sa d eccentric.

, The operating mechanism for clutching and declutching thealigned shafts 26 and It comsaid control lever has associated with it an lat and circular.

appropriate dial 41:4 for indicating which of the two settings herein provided for is at the time eil'ective. The lever db, in one position of adjustment, effects and at the same time indicates a clutched shaft condition, whereas in a different position of adjustment said lever effects and indicates a leclutched shaft condition. The

shafts

26 and 29, when clutched, admit of the use of the radio phonograph as a radio receiving unit, and when declutched, admit of its use as a phonograph.

Both the control lever l3 and the operah ing eccentric lO are mounted on a shaft l5 journaled in bearings 4:6 formed respectively on the underside of the cabinet top 16 and in the casting 24:. Said shalt l5 also cares, intermediately of its ends, a cam Lli". is cam 47, or rather the working face thereof, is in bearing contact with the free end of a brake lever 48, fulcrumed as at if} to,. and extended vertically thru the casting 2% for projection above the cabinet top. At its projected or upper end said lever 48 has pivotally fastened to it, as at 50, a. brake rod 51. 'ihis rod 51, from said lever l8, extends outwardly toward the Jeriphery of the table 20 between it (the ta ale) and the cabinet top. Like the rod 39, the rod M has formed thereon an abutment 52 against which a spring 58, encircling the rod, bears at one end. Said spring 53, at its opposite end, is in bearing contact with a lined abutn'ient i'i-l; PiStGliOCl to the cabinet top; the relation of said spring 53 to the rod 5i being such that the latter, regardless of the position oi the lever d8, is at all times urged outwardly or toward the table periphery, and the lever 48,. at all times, held in b airing contact with its operating cam. If desired, a guide 55 for the brake rod 51 may be provided.

The table 20 is preferably horizontally On its underside and adjacent to its periphery, it is provided with an annular rightangle flange 56. This flange, not only reinforces the table 20. but note also as a brake drum against whirh the outer or free end of thc' liralte rod 5i frictionally bears. In the rnieralion ol' the radio phonograph as a radii; receiving unit, such frictioi'ial contact between the brake rod 51 and the bralie drum Fill is su'llicient to prevent the free rotation of the tablc'under the iii-lion of the motor 2-). the insutlicient to prevent its rotation otherwise. The moment, however, said bralae rod is withdrawn from its e" j i ement with the brake drum, the table ag lrici'ionallv released, is immediately coiantiened for sullsequent use as a phone iph record table.

Except for the provision of a sight opcning 57 and an indicator 58, the cabinet cover herein shown, said cover 59 comprises it ill) llo

I lined part and a removable part 61, the

latter being hinged as at 62 to the former. The sight opening 57, it Will be noted, is lorniied in said removable part 61, directly above the control lever 43. To improve visibility, that portion of the cover section 61 in the innnediate vicinity of the sight opening, is depressed or carried inwardly so as to overhang the outer edge of the table 20.

The table 20, upon its periphery, is pro vided with a dial flange 63. This flange 68, as distinguished from the right-angle l'lange 56, is outwardly and downwardly inclined. Preferably. it is formed as an integral part to the table 20 to rotate with it. Its relation to the sight opening 57 is such. that the top face otthe dial is visible at all times thru said openin Suitable markings upon the dial flange, in conjunction with the indicator 58, indicate, in the use of the radio phonograph as a radio receiving unit, the various settings of the variable condenser 10. The character of markings impressed or otherwise formed on the dial flange is immaterial. It is obvious from the above that the table 20 is useable either as a record table in conjunction with the phonograph unit or as a dial in conjunction with the radio receiving unit. To use said table as a phonograph record table, the

shafts

26 and 29 should be declutched and the brake rod 51 Withdrawn from frictional contact with the brake drum 56. This is accomplished by a single operation, or movement inone direction (as indicated by the dial dd), of the control lever 413. To use said table as a dial in conjunction with the radio receiving unit, a reverse movement of the control lever is required. Such reverse movement of said lever simultaneously operates the bra re and clutch inversely. lVith the friction brake applied and the shafts and E29 properly clutched, a connection between the table (used now as a dial) and the variable condenser 10 is establisl'ied. Being relatively large, the table 20, used as a dial, admits of finesse oiad- 3 ustinent.

The mechanism for manually rotating the table is best illustrated in Fig. -l-. Preferably it is positioned at one side of the control lever 43 in the same relation to the cabinet top. A relatively large disc ti l, having a nurled periphery, and a comparatively small disc 65, are used. Both said discs are mount- .ed on a shaft 66 which extends vertically thru the cabinet top directly beneath the overhanging dial flange 33 oi the table. The larger disc 64: is carried partly without the cabinet to be conveniently ope 'ated by either the thumb or linger in reflecting its rotation. llhe smaller disc 65 is positioned below said dial flange in close pronin'iity to the brake drum 56. In 5 it will be seen that the shalt 66, instead o'l being lined in its relation to the cabinet, is bodily shiftable toward and iron] the axis of rotation of the drum. Accordingly, as pressure is exerted 011 the larger disc 6%- it, the shaft 66 and the smaller disc (55,are swung inwardly toward the drum axis until the latter, the disc (55, trictionally engages the outer of said. druin. By continuing such inward pressure and siinultaneously rotating the disc 65 with the thumb or finger, the table 20 is proportionately turned and its rotative movement directly transmitted, via the shafts 2b and 29, to the variable condenser 10. Arms e7, pivoted as at (ill to the cabinet top, support the shait 66 in the manner described.

A radio phonograph characterized as herein disclosed may or may not have associated with it (as part of the radio equipment) a panel 6:) for the attachment or the aerial and other outside radio connections, a phone jack l0 for head phone so, it and when such use is desired, and a disk 71 tor regulating or controlling the volume of sound. bhich agencies or instrunientalities, however, loiiu no part of the invention claimed, nor are they in any way essential to the proper operation of the radio receiv ing unit. i'iloreover, it desired, a door 7'2 may be termed in the cabinet 10 that access may be had to the radio parts enclosed therein.

l tei'erring next to the modification of Fig. 8, it will be noted that the clutch mechanism and the brake l'lileCl'lzllllSlll oil the preferred ioi'iir oi? the invention have been dispensed with. The revolving table of said inodili cation, designated as 80, is wholly independent ot the dial. As in the preferred lorin ol? the invention said table is mounted on a vertical shaft ill having a Worm (82) and gear (83) connection with the motor 8st oil the phonograph unit. The dial 85, instead of being formed as an integral part of the table 80, is separately formed and independently rotatable. t laid dial comprises a circular body portion 86, recessed as at 8? to accoi'ninodate the table; a peripheral. portion 88 (downwardly inclined); a de pending annular iiange portion 89; and a centrally located sleeve or collar portion 90. The collar portion 90 has torn'ied u pon it a gear 91 which is adaptedv to mesh with a relatively large gear 92 inr'uinted on, a shaft 93 directly connected with the variable condenser 9% oil the radio receiving unit. Preterably, the collar so of said dial rests directly upon the casting 95 which supports not only the record table 80 but the ioecl'ianism provided for rotatii'ig it. Thus organised, said record table and said dial 85 have a common oi rotation; the shalt- 81. oi the record table being extended vertically thru the collar or extension of said dial. in all other respects the two forms of the invention are substantially identical.

While I have described my invention in nection.

ing unit including a tuning condenser, a

record table for said phonograph unit having associated with it a tuning condenser dial, said record table and its associated tuning condenser dial having a common axis o frotation and selective means operable to admit of the use of said record table as such or or its use a tuning condenser dial.

*2. The combination, in a'radio phonograph, of a pho'nograph unit, a radio receiving unit including a tuning condenser, a record table for said phonograph unit having formed on its periphery a series of graduations, said record table being useablc either asa record table with said phonograph unit or as a tuning condenser dial with said radio receiving unit, and means operable to regulate such selective use.

3. The combination, in a radio phonograph, of a radio receiving unit inchuhng a tuningcondenser, a record table for said phonograph unit having formed on its periphery a series of graduations, said record table being useable either as a record table With said phonograph unit or as a tuning condenser dial with said radio receiving unit, means operable to rotate said record table when used as such with said phonograph unit, and means operable independently of said last mentioned means to rotate said table when used as a tuning condenser dial.

4. The combination, in a radio phonograph, of a phonograph unit, a radio receiving unit, including a variable condenser and an operating shaft therefor, a table common to both said units and useable either as a record table in conjunction with the phonograph unit or as a tuning condenser dial in conjunction with the radio receiving unit, a connection between said table and said condenser operating shaft, and mechanism operable to make or break SilltlCOll 15. The combination in a radio phonograph, of a phonograph unit, a radio receiving unit, a table common to both said units and useable either as a record table in conjunction with the phonograph unit or as a dial'in conjunction with the radio receiving unit, mechanism operable to regulate resepes such use, and a table brake operable in conjunction with said mechanism.

(5. The combination, in a radio phonograph, ot a phonograph unit, a radio receiving unit, a table common to both said units and useable either as a record table in conjunction with the phonograph unit or as a dial in conjunction with the radio receiving unit, mechanism operabl to regulate such use, a table brake, and means tor operating said brzdze SlilltlliitiiOOllily with the operation of said mechanism.

7. The combination, in a radio phonograph, a phonograph unit, a radio receiving unit, a table common to both said units and useablc either as a record table in conjunction with the phonograph unit or as a dial in conjunction with the radio receiving unit, mechanism operable to regulate such use and selective means respectively power operated and manually operated, for rotating said table according to its particular use.

The combination, in a radio phono-' graph, of a cabinet, a phonograph unit he sod within said cabinet, a radio receiving unit likewise housed within said cabinet, a revoluble table common to both said units and 1 cable either as a record table in conjuiu )ll with the phonograph unit or as a dial in conjunction with the radio receiving unit, means operable to regulate such use, apewer means for rotating said table when used as a record table and means manually operable from without said cabinet to rotate said table when said table is used as a dial.

5). The combination, in a radio phonograph, ot a cabinet, a phonograph unit housed within said cabinet, :1 radio receiving unit likewise housed within said cabinet, a revoluble table common to both said units and useable either as a record table in conjunction with the phonograph unit or as a dial in conjunction with the radio receiving unit, a variable condenser disposed beneath said table and within said cabinet and vtorming a part of said radio unit, a table shaft, a shaftin axial alignment with said table shaft and fastened to said variable condenser,

a power means for rotating said table when used as a record table, means manually operable to rotate said table when used as a tuning condenser dial, and mechanism operable to connect or disconnect said aligned shafts according to whether or not said table is used as a record table or as a tuning condenser dial.

In testimony whereof I hereunto allix my signature.

JAMES S. SPAINHOUR.

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