US1436687A - Winding mechanism for spring motors - Google Patents

Description

L. K; SCQTFORD. WINDING MECHANISM FOR SPRING MOTORS. APPucAnbN FILEDJAPR. 11, 1915. f

1,436,687. Pate ted N0v. 28,1922.

2 SHEETS-SHEET I.

i s: 1517/6 22 for: ML Lou 135%.500 Zford L. K. SCOTFORD.

WINDING MECHANISM FOR SPRING MOTORS.

APPLICATION FILED APR- I7 I915.

Patented Nov. 28, 1922.

Patented Nov. 28, 1922.

LOUIS K. SCOTFORD, OF CHICAGO, ILLINOIS,

ASSIGNOE TO CHENEY TALKING MACHINE COMPANY, A CORPORATION OF ILLINOIS.

WINDING FIECHANISM FOB SPRING MOTORS.

Application filed April 1?, 1915. Serial No. 22,076.

To all whom it may concern Be it known that I, LOUIS K. Soorrono, 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 Winding Mechanism for Spring Motors, of which the following is a specification.

This invention relates to improvements in winding mechanisms for spring motors, and has for its object to provide, in combination with a talking machine spring motor or the like, mechanism to automatically wind such motor which mechanism will automatically discontinue its functioning while the talking machine is being operated and when the spring is sufiiciently wound. v

My invention further resides in the specific construction and arrangement described in the following specification. and shown in the accompanying drawings, in which:

Fig. 1 is a side elevation of my invention located in the casing, a portion of the same being broken away for cleamess;

Fig. 2 is a plan view of the mechanism;

Fig. 3 is a side elevationof the main winding gear and ratchet;

*ig. 4 is a section along the line 44 of Fig. 5 is a plandetail view of the intermediate gear and its mounting;

Fig. 6 is a similar view of the intermediate gear actuating pinion;

Fig. 7 is a bottom plan view of the brake; and

Fig. 8 is a section along the line 8--8 of Fig. 7.

Like numerals refer to like elements throughout the drawings, in which 10 in dicates generally the casing of a talking'machine having the top 11 through which projects the tone arm 12 carrying the reproducer 13 which carries the needle 14, these features not forming a part of my invention. When the machine is being used, the needle 14 rests upon the record 15 carried on disk 16. EX- tending downwardly through the top of casing 11 from the disk 15, and operatively attached to the latter, is a shaft 17 carrying a small gear 18 in mesh with and driven by a larger car 19 which is carried upon a shaft 20, see *ig. 2. Secured to this shaft 20 is a small gear 21 meshing withthe main actuating gear 22, see Fig. 1, which is carried by a spring barrel 23, forming with a second spring barrel 24, the springmotor, of well known construction. Secured to the barrel 24 IS a gear 25. This gear 25 meshes with a right angularly uisposed driving pinion 26 carried on the shaft 27 which is journaled in brackets 28, see Figs. 1 and 2. Also mounted upon the shaft 27 is a gear 29 which meshes with an intermediate gear 30 which is carried on trunnion 3O pivotally mounted between the arms of yoke 31.

The brackets 28 are integrally formed with and depend downwardly from the main plate A from which also extends downwardly the bracket 32, in which is provided an aperture 33 through which extends the rod 34, preferably formed integral with the yoke 31 and ofreduced diameter to form a shoulder 31 therewith, see Fig. 5. This rod 34 is slotted at 34 and a pin 36 extends through the bracket 32 and slot 34*, as shown in Fig. 5. This slot 34 is of such size as to permit slight translation or sliding movement of yoke 31 and rod relative to bracket 32,as will be apparent. Adjacent its end the rod 34 carries the nuts 34 spaced from the bracket 32, and a spring 38 is coiled around the rod 34 between nuts 34 and bracket 32. Meshing with the intermediate gear 30 is an actuating pinion 40, see Figs. 1 and 6, this pinion being mounted between the arms of the yoke 41 having a stub end 42 mounted in an aperture 32 in bracket 32 by which it is secured by means of a pin 43. Below the ac tuating pinion 40 the bracket 32 is provided with the angularly disposed portion 32 having a-recess or cut-away portion 32 therein, in which is mounted a worm 45 carried on sleeve 45 which is mounted on and attached to the rod 46, the latter being journaled in the portion 32 of bracket 32. This worm 45.1neshes with the pinion 40, as shown in Fig. 1 of the drawing. A shaft 46 is detachably secured by means of the collar or sleeve 43 to the armature shaft 49 of an electric motor 50 which is attached to a base 51, in turn secured on an angle bracket 52 attached to the wall of the casing 10.

Mounted upon the top wall 11 of the casing 10 is a braking mechanism comprising a cap or casing 61, see Fig. 7 to the top of which is pivotally attached the bell crank 62 having the engaging handle 62* and the braking arm 62 which latter is provided with a plug or insert 62 of felt, leather, or

the like, and adapted to contactwith the pehiphery, of the disk 16 to bring the same to rest and maintainit at rest. Attached to the bell crank 62 in the cap or casing 61, is the arm 63 having the downwardly bent end 63 to which is attached one end. of the coiled spring 64 having its other end attached at 61 to the, interior of casing 61. This spring is so arranged, as is the bell crank 62, that as soon as the latter is started from position out of contact with the disk 16, the spring will'bring the plug 62 into contact with the latter andmaintain it in such contact, as is well known in this art. The" spring 64 is so located that 'it will not draw the bell-crank out of inoperative position owing to' the "relative location" of the crank and spring. That is, the lever 63 when moved to inoperative position carries the point of attachment of the spring 64L to a point where the pull of the spring cannot move the bell-crank and brake to operative position. This construction is similar to that in commonfuse. Secured to the underside of the top of casing 61 is a contact 61* to which may be secured the terminal of one circuit wire 65. This contact6l is normally insulated by insulating washer 61 from the casing 61, to the latter being attached the other wire 66 of the circuit, the latter extending to a post or terminal 66 on bracket 32; A second contact 68 is attached to and depends from the yoke 81 see Fig; 1, this contact 68 being normally in contact with the post 66 The contact 68 is nor mally insulated from the yoke 31 and is electrically attached to the wire 70 which leads to one terminal 70 of the motor 50. Attached to the other terminal thereof (not shown) is a second wire 71 leading to a switch 67 which may connect itto a source of current 72 and from the switch extends a wire 73 connected to the casing 61.

It will be apparent, as shown in Figs. 7 and 8, that, with switch 67 closed, when the brake bell crank 62. is in position braking or holding at rest the disk 16, contact will be established between the casing 61 and the contact 61-, so that assuming switch 67 is in the correct position, the circuit will be c0m pleted and the motor 50 will be actuatedto wind the spring through the medium of worm 45 and the train of gears meshing therewith, the latter causing proper rotation, of gear 29. Toprevent reverse rotationof the same I have rotatably mounted the gear 29-upon shaft 27 and adjacent such gear I have provided a ratchet-wheel 90 attached by a pin 91, or the like to the shaft 27. A pawl 92 is pivoted to the gear 29,- as shown in Figs. 3 and l, and-is provided with an engagmg end arranged to engage StlCl ratchet 90 in one direction of rotation of the gear 29m effect winding of the shaft 27 and the spring motor. A leaf spring 93, which is attached to the gear 29, maintains t e p w 92 i y ng e geme with the ratchet 90 so" that in one direction of rotation of the gear 29, ratchet 90 will be nfl d While n. t e th r irect on t w beallowed; to thereover.

It will be obvious that it is notdesirable to continue. the winding of the spring motor beyond a certain point, generally that at which it issu-bstantially fully wound, and to overcome any such objection Ihave mounted the intermediate gear 30, as described, and the actionofthe same is as follows:

As the gearing is operating to wind the spring motor, the gears" all remainin the position'shown in ig, 1', intermediate gear 30 in re a e ts Pr p r; P s n by means of the coil spring '38 which is of proper size and compression. When the spring motor reaches the point of sufficient winding, however, the further rotation of the intermediate gear 30will cause a yielding of the springf38, the compression o'f-the latter being less than that'necessaryto overcome theresistance ofthe spring motor and the intermediate gear 30'willpart ial'ly-roll on gear 29 against the action of spring 38 until such movement is preventedbypin- 36 in slot 3?. This slight rolling results in contact 68-beingdrawn out of contact withpost 66 so that the electric circuit is broken or opened and further rotationofthe motor-50 ceases i Y It will thusbe obvious that I have provided a mechanism for automatically winding a spring motor for-talking machines, or the like, which will 'only function when the rotatable disk or similar element is at rest, and will only wind the spring motor adesired amount, thereby eliminating danger of breakage of the spring and other disadvantages which might ensue, were the safety means described above not provided;

It will also be apparent that my device is susceptible of numerous modifications and improvements, and I do not wish to be restricted to the formshown and described beyond the scope of the appended claims.

WYhat I claim is:

1. In combination with a springmotor, a brake to control the actuation thereof, a winding shaft for said motor, an electric winding motor, means operatively connecting said Winding motor andsaid-shaftcomprising a train of gears, one ofsaid gears being mounted for translation, an; electric circuit controllable by said brake arranged to supply current-tosaid electric motor-rand a supplemental. circuit breaker carried; by said translatablegear and adaptedto break said circuit when movedfrom normal position and-to closethebreak, in saidcircuit but not start said motor.v when moved into normal engagement. I

2. In combination with a spring motor, a winding shaft therefor, a brake for controlling the operation of said spring motor, an electric winding motor, means operatively connecting said winding motor and shaft, said means comprising a train of gears, one of said gears being mounted for translation and arranged to move from normal position when said spring motor is sufficiently wound an electric circuit controlled by said brake arranged to supply current to said electric motor, and a pair of contacts in and forming part of said circuit, one of said supplemental contacts being mounted to move with said translatable gear whereby movement of the latter from normal position will open said circuit stopping the electric winding motor, and the movement thereof into normal position not starting the motor.

3. In combination with a spring motor and an element arranged to be actuated thereby, a winding shaft therefor, means for braking said element from actuation by said spring motor, a winding motor, operative connections between said winding motor and shaft, means operable by said braking means when in braking engagement with said element to automatically actuate said winding motor, and when out of braking engagement to discontinue the actuation of said winding motor, and supplemental means interposed in said operative connections to discontinue the actuations of said winding means when said spring motor is sufliciently wound.

In testimony whereof, I have subscribed my name.

LOUIS K. SCOTFORD.

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