US1421404A - Motor for talking machines - Google Patents

Description

F. CHENEY.

MOTOR FOR TALKING MACHINES.

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ummm g @www FOREST CHENEY, or o-Iioaoo, ILLINOIS, .assIGNoR To CHENEY TALKrNG MACHINE COMPANY, or onroaeo, rumors, aooaroRATroN 'or ILLINOIS.

MOTOR FOR TALKING I'VIACHNES.V

Application filed January 18, 1919.

To all whom t may concern.'

Be it known that l, Fonns'r CHENEY. a citizen of the United States, residing at Chicago. in the county of Cook and State of illinois` have invented certain new and useful improvements in Motors for Vlallring llfiachines. of which the following is a speciication.

My invention relates to talking machinesl and particularly 'to spring motors therep T02'.

rllhe present type of double spring motors is made with two separate spring barrels, one for each spring. These are mounted with a single shaft extending through the Center of the barrels and to which shaft one end of each of the springs is fasteneth the other ends of the springs being secured to the barrels. Consequently. the initial winding and unwinding is accomplished through the barrels and not through the shaft. the result being that a considerable amount of friction is developed in the springs themselves as they re being wound or unwonnd.

)ne of the objects of my invention is to provide a novel spring` barrel for spring motors. Y

Another object is to provide a single barrel for double springs wherein both the initial winding and unwindng is from the center of the springs.

A vet further object is to provide :i twopart shaft i'or cooperation with a double spring arrangement whereby the initial winding` and nnwinding may be through the shaft and the friction due to the springs largely eliminated.

A still further object is to provide novel monntings for avmotor-Vspring barrel where by the same may be easily applied and removed and at all times properly aligned for cooperation with the other operative parts.

still further object is to improve spring motors for successful commercial nse.

Generally speaking. I accomplish these and other objects of my invention by providing a single barrel for double motor springs open at the top and bottom and having suitable covers therefor. and providing a two-part shaft with which the superimposed springs in the barrel are con* nected/` one spring to each portion, the springs being arranged in reversely wound Specification of Letters Patent;

Patented July 4,1922.

Serial No. 271,776.

center of the spring barrel shown in Fig-r ure 1.

Figure 3 is a top plan view on the line 3 3 of Figure 2.

Figure 4 is a transverse section on the line lf-4 of Figure `2.

Figure 5 is a horizontal section on the line 5 5 of Figure V2, and Y Figure 6 shows the preferred manner of removably securing the springs to the springl barrel and shaft.

Referring to .Figure 1 it will be noted that there is provided thev usual motor framev comprising top plate 1() and bottom plate 11 connected by the standards 12.V 13'isv the yspring barrel mounted between the plates 10 and 11 so as to revolve about a vertical axis which manner of mounting will be more fully described hereinafter. Connected to the shaft 42 below the bottom of the barrel 13 is a gear 14; meshing with a pinion 15 on shaft 16 which is held in vertical position between the plates 10 and 11. On the same shaft 16 and below the gear 15 is a large gear 17 meshing with a small pinion 18 at the lower end of the turn table shaft 19. The vshaft 19 extends above the top` plate v'10 and is adapted to entend through a properly arranged aperture in the top casing of the talking machine for carrying the -usual disc record turn table.

Also secured on the shaft 19 is a gear 20 in mesh with a worm 21 on a horizontally disposed shaft 22 which is maintained in bearings supported by lugs 28 and 24; extending downwardly from top plate 10. About the shaft 22 is mounted a ily ball governor comprising collar 25 which is secured to the shaft in any suitable manner and another collar 26 adapted to rotate about and move along said shaft 22. Spring arms 27 connect the collars 25 and 26 in the usual manner and to each arm attached .preferably at an intermediate point is a Weight 28.

Secured to theimovable collar 26 is a flat disc 29 for cooperation with a brake shoe of a speed regulator of any well known type.

the underside of the top plate and on.`

which shaft` is pinion 34 for meshing with a gear 35 secured to the shaft 41 lying within and extending from the upper portion of barrel 13, as 'will be more fully explained hereinafter. f

The spring barrel of my invention as before stated comprises a single member 13 Iliade of pressed or cast metal and is open at the top and bottom and adapted to be closedby covers 36 and 3T, removably held in position on the peripheries of the barrel 13 by set screws or other suitable fasten ing means. Within the barrel 13 a re mounted the reversely wound fiat springs 39 and 46,; detachably connected at their outer ends to the drum preferably at opposite points, Figure 4 showing the arrangement of the winding ofthe spring and Figure 5 showing the spring 40. Extending through the center of the spring barrel 13 is the two-part V shaft comprising upper portion 41 and lower portion 42, the` adjacent ends ,of these por tions being at preferably midposition ofthe spr-ing barrel. y shafts bel maintained in` alignment at all times. ToV accomplish this l provide the lower end of :the portion 41 with a counter bore 43 and the upper end of the portion 42 with` a reduced extension 44 which projects into the counter bore 43 to maintain. the portions 41 and 42 in axial alignn'ient. The inner end of the spring 39 is removably secured to the shaft portion 41 by thestud 45 andthe inner end of the spring `40 to the i portion 42 by similar fastening means 46.

the outer ends of the springs being secured to the spring barrel at 47 and 43 respectively, the connections at these points being such as to permit ready removal or applica ,l tion of the springs and `may consist of a slot 51 having an enlargement 52 for passing over the heads of the studs 45 which construction is illustrated in Figure 6. outeryends of the shaft portions 41 and 42 .i project beyond the covers 36 and 37, of the spring barrel and are reduced as shown `in Figure 3 to form `fiat surfaces 49. F or cooperation with the shafts outwardly of the covers of the spring barrels l provide the i usual gears 14 and 35 which gears have slots formed thereinof the same shape and size as the reduced end portions 49 of the shafts. 41 and 42` so that when the gears areapplied thereto they will rotate with the shafts. As shown in Figure.2 lprefer to` spacethe` gea- rs 14, 35, a slight distance from the covers 36 and 37, interposing between the covers It is desirable that these The and the under sides of the gears washers 5G. Threaded apertures 53V are formed in the outer ends of the shafts 41 and 42 for engagement with shouldered screws54 ha-ving heads circular in transverse section. In the top and bottom plates 1() and 11 of the mo tor case, l provide apertures 55 for the reception of the heads of the screws 54.` To assemble the spring motor barrel in position in the frame the gears 14 and 35 are first applied to the shouldered ends of the shafts 41, 42, as before described. The whole is then inserted in position between the bosses 56, 57 of the cove- r plates 11 and 10,V respectively. The screws 54 are then inserted in the openings 55 and screwed into the apertures 53 in the shaft portions whereby the spring barrel is brought into proper operative position with respect'to the motor-casing. These screws are tightened. until4 the gears 1 4, 35 are securely fastened to the shafts 41, 42, which is done byA screwing home the screws so as to clamp the gears against the annular shoulders on the shafts. The washers 50 permit relative rotative movement between the cover plates 36, 3T and the shafts 41, 42, and also support the drum between the gears, and engage shoulders` on the shafts maintaining the shafts concentrically relative to said gears and also render the drum oil tight. From the above it will, be noted that l have provided a siniple arrangement for: securing the spring barrel in operative position in the motor casing and that such means assures at all times proper aligning position of the spring barrel with respect to the operative parts so that there will be no likelihood of any play or other obj ectionable connection between the gears 14, 35, and the other gears with which these cooperate. Furthermore, to apply or remove the spring barrel it is necessary only may be presumed that a record hasbeen played and that the motor is unwonnd. The operation of the motor is stopped by appliw cation of the brake (not shown) to thereoord turn table.

such is provided. Rotation of this shaft 31 through the train of gears shown, rotates the c shaft portion 41 in a clockwise direction as The operator then actuates, the winding shaft 31through means of a'` handle, not shown, or by electric motor, ity

viewed in Figure 4, thus winding spring 39 from the inside. As the spring 39 is wound from the inside the tendency of the outer end is to unwind which will turn the spring barrel 13 in clockwise direction. Consequently, the outer end of the spring 40 which is attached to the spring barrel'casing but wound in a reverse direction to spring 39 will be wound from the outside tending to `unwind at the inside or tending to rotate the shaft portion 42 in a clockwise direction. However, the brake being applied to the turn table, shaft 42 will be prevented from rotation. It will thus be observed that. both springs 39, 40, are wound ready for actuation of the turn table and spindle 19 when the brake cooperating therewith is released. The springs now having been wound, and the shaft 31 locked against rotation, and a new record having been applied, the brake, (not shown) cooperating with the turn table and the shaft 19 is released whereupon the shaft 42 will be rotated in clockwise direction by reason of the fact that spring 40 is wound as before described, and unwinds from the inside while the outer end thereof turns the spring barrel 13 in a clockwise direction, which movement unwinds spring 39 vfrom the outside. It will be observed that my invention provides that winding and unwinding of the springs that have to do with the operation of the disc record holder is from the center of the spring barrel through the shaft portions 41, 42. Consequently, there is little friction created between the several turns of the springs within the barrel so that the entire unwinding force of the springs is utilized to drive ythe turn table and not to overcome the friction experienced in the present type of spring motors.

By reason of the removable connection of the springs at the points 47, 4S, of the spring barrel, and similar connections at the inner ends with the shafts 41, 42, and the ready manner of removingr the spring barrel from the motor casing, it will be observed that replacement of springs is but an easy matter. To replace either or both of the springs it is necessary only to let the motor run down to the point where both springs are fully unwound whereupon the spring motor may be removed in the manner hereinbefore described, and either or both of the cover plates taken off and the springs disconnected from. the shafts as those may be removed from the barrel with the spring and also from the spring barrel. Referring to Figure 2 it will be noted that there is interposed between the springs 39, 40, a horizontally arranged floating plate 58 which is rotatable with respect to either of the shafts 41 and 42. rlhis plate is prefer'- ably perforated as shown at 59 in Figure 4 so that the lubricantwithin the spring barrel 13 may be passed from the upper to the lower side or vice versa of this plate. This arrangment prevents gumming of the spring and consequent loss of the efficiency thereof.

lVhile I have described moreor less precisely the details of construction, I do` not wish to be understood as limiting myself thereto, as I co-ntemplate changes in form and the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit of my invention.

I claim 1. In a spring motor, a spring barrel comprising a one-piece straight cylinder, a central support, a pair of springs in said cylinder, means for securing the outer ends of the springs to the cylindenmeans for supporting the inner ends of the springs on said support, a one-piece head or end wall for each end of said cylinder, and means interposed between the twosprings to divide the interior of said cylinder into two intercommunicating compartments, one for each spring, for housing and lubricating the springs thus separately inclosed, so that each of the two springs is wound and unwound in its own compartment.

2. A structure as specified in claim 1, said means for separating the two springs consisting of a plate or disk inserted in the cyl'- inder.

3. A structure as specified in claim 1, said means for separating the two springs having a plurality of openings through which a lubricant can flow either way from one spring to the other during the operation of the motor.

4. A structure as specified in claim 1, said means for separating the two springs comprising a plate or disk loosely inserted in the cylinder vand provided with openings through which a lubricant can flow from one compartment into the other.

5. In a spring motor, the combination of a pair of springs, means for housing said springs, and means for separating one spring from the other and providing means whereby a lubricant is forced back and forth from one spring to the other.

6. In a motor of the class described, in combination, a frame, a spring barrel, a shaft extending therethrough, and means engaging the shaft for removably securing said barrel in position in said frame, said means having bearings in the frame. 1

7. In a spring motor of the class described, in combination, a single spring barrel, two reversely wound springs therein in superimposed relation, a two-part floating shaft eX- tending through said barrel, each ortion extending substantially half-way of t e barrel, the outer ends of said shaft adapted to support gears thereon and provided with 8. In a motor oi' the class described, in

combination, a frame, a spring barrel, al

shaft extending therethrough, and means engaging the shaft Jfor removablysecuring said barrel in position insaid'iirame, said means being removable from the outer faceof the iframe and having bearings in theirs-me.`

9L In amotor` oi `the class described, in combination, a trame, a spring barrel, a shaft extending therethrough, and means engaging the shaft forremovably securing said barrel in position in said frame, said means forming in eiiect removable extensions of the shaft.`

`10.` In a motor of the class described, in combination, a frame, a spring barrel, a shaft extending theretljirough, and means engaging the `shaft lor *removably securing said barrel lin position in said frame, said means being rotatable with the shaft and having bearings in the iframe.

l1151111 a spring motor oi thef class de-y scribed, in combination, a motor trame, a single spring barrel,` two reverse-lywound springs therein in superimposed relation, a

floating shaft@ extending through said barrel,the outer ends" oi? said shalt being pro vided with centrally disposed threadeffl aper-` tures, and set screws for engaging said apen tures, said set screwshaving bearings in the motor frame. `i

l2; In a spring motorot` thef class described, :in combinationpamotor frame, a single springbarreI, two reversely 'wound springs therein in superimposed relation, a two-part `floating `shaft extending through said barrel, each portionjextendingsubstantially halteway of the barrel, the outer ends of said shaft adaptedto support gears thereon `and provided `with centrally disposed igaeigaoa threaded apertures, and set screws for engaging said apertures, said set screws forming elongations of the shaft portions;

In a spring motor of the class described, in combination, a motor traine, a single spring barrel, two reversely wound springs therein in superimposed relation, a two-part floating shaft extending through said barrel, each portion extending substantially half-way ofthe barrel, the outer ends of said shaft adapted to support gears thereon and provided with i centrally disposed threaded apertures, and screws for engaging said apertures, said screws form ing elongations of the shaft portions and having `bearings in the motor frame,

I4. In a spring motor of the class described, in combination, a motor trame, a single spring barrel, two reverseljy1 wound springs therein in `superimposed relation, a floating sha'lt extending through said bar rel, the outer ends of said shaft adapted to support gears thereon and provided with centrally disposed threaded apertures, set screws 'for engaging said apertures, said set screws being removable from the outer tace of the frame. i Y

15. In a spring motor of the class described, in combination, a motor frame` a single spring barrel, two reversely wound springs thereinin superimposed relation, a two-part floating shaft extending through said barrel, eachv portion extending substantially half-way ot the barrel, the outer ends 'of said shaft being provided with, centrally disposed threaded apertures, and members having screws tor engaging said apertures, said members being removable 'from the outer face ot the. `frame andwhen so re moved serving to release the shaft portions from the trarne.

Signed at Chicago, Illinois, this 13th day oi January, 1919.v

FOREST CHENEY.

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