US1312624A - Louis a - Google Patents

Description

L. FREEDMAN. WINDING MECHANISM FOII TALKING MACHINES.

APPLICATION FILED JUNE I1. I9l4.

1,312,624, Patented Aug. 12, 19111.

2 SHEETS-SHEET I.

L. A. FREEDMAN. MECHANISM FOR TALKING MACHINES.

WINDING APPLICATION FILED JUNE 17. 1914- Patented Aug. 12, 1919.

IIIIUHHHIIIII llllllll I H LOUIS A. DMALN, OF NEW YORK, N. Y.

ING- MIEOISM FOR TALKING-MACHINES specification of Letters Patent.

Patented Aug. 12, 13319..

Application flied June 17, 1914. Serial No. 845,551.

To all whom it may concern:

Be it known that 1, Louis A. FREEDMAN, a citizen of the United States, and a resident of the city, county, and State of New York, (whose post-oiiice address is 135 West 86th street, New York city,) have invented new and useful Improvements in Winding Mechanism for Talki -Machines, of which the following is a 'speclfication.

The object of my invention is to provide a device of this class which may be applied to any suitable talking machine provided with a cover, so that when the cover is raised or lowered,- as the case may be, either or both, the mechanism for dniving the record is wound without the usual trouble incident to turning a crank after the machine is otherwise ready for operation. This objectis accomplished by my invention, several embodiments of which are hereinafter set forth, although it is to be understood that my invention is not restricted to the precise structures herein disclosed, but may be applied in many other ways, all of which come within the scope of the claims.

For 'a more particular description of my invention, reference is to be had to the acoompanying drawings, forming a part here-.

of in which Figure 1 is a front elevation of a talking machine provided with my invention, a part of the casing being broken away to reveal the interior structure;

Fig. 2 is a transverse section of a portion of the mechanism shown in Fig. 1, on the line 2-2 of Fig. 3, looking in the direction of the arrows;

Fig. 3 is a sectional view, taken on the line 3-3 of Fig. 2, looking in the direction of the arrows;

Fig. i is a sectional view, taken. on the line *il of Fig. 3, looking in the direction of the arrows;

Figs. 5 and 6 are sectional views, taken on the lines 55 and 6-6 of Fig. 4, looking in the direction of the arrows;

lFi 7 is a sectional view, taken on the line T-i' of Fig. 3, looking in the direction of the arrows.

Throughout the various views of the drawings, similar reference characters designate similar parts.

In the preferred embodiment of my invention, as disclosed in the accompanying drawings, 1 indicates the instrument which is provided with a cover 2 and case 3, which may be of any suitable construction. The cover 2 is hinged to the case 3 by suitable hinges l and the cover may be held in'an elevated position by means of the-ordinary brace 5. The instrument is provided with the usual sound box arm 6, which is placed over the turntable 7. The turntable 7 is carried above the platform 8 and is driven by the vertical spindle 9 which carries the spiral ar or worm 10 which is driven by a -suitw le motor 11 in the conventional manner.

The motor 11 is provided with a. main shaft or arbor 12 on which is mounted a ratchet wheel 28 and pinion 14:. These parts do not rotate backward during the unwinding of the motor 11, but remain at rest. A spring pressed pawl 29*, acting un-' ing gear 31. This pawl engages with the ratchet wheel 28 preventing backward movement of the main shaft 12. The gear 14 meshes with a correspondin pinion 14- on a shaft or arbor 54 suitably ournaled in the bracket 13.

The crank usually found on talking machines for winding has been replaced on this shaft 54 by a friction clutch 52 and a sprocket wheel 33 which is driven by a sprocket chain 3a which also passes over the main driving sprocket wheel 35 which will be described below. In this embodiment of my invention, either the raising or the lowering of the cover 2 will cause this sprocket wheel 35 to be driven in the same direction. The friction clutch is provided, as will alppear Ibelow,'-to prevent an over-winding of the spring motor.

The cover 2 is provided with a suitable screw shaft 36 which is pivoted to said cover at 37 and passes down through the opening 20 in the platform 8, and also through a casing 38 fixed by suitable screws 39, or otherwise, below said opening. This casing 38 has a suitable cover 40 held in place by suitable screws 40, and both the cover 40 and the casing 38 are slotted so as to permit the screw shaft 36 to oscillate in this casing in a manner which, will now be described.

In the casing 38, and below the cover 4:0 is mounted on the screw 36 a suitable nut 41 which has double threads engaging the corresponding threads of the screw 36, the threads in each case having a large pitch, as shown. This nut d1 carries at each end a collar 42 which is fixed thereon, and against these collars are opposed double bevel gears 43 and 44: which turn idly on this nut 41, and between these double gears are placed two ratchet wheels'4c5 and 46 which are fixed on the nut 4:1 and provided with suitable annular races for ball bearings, and corresponding races are placed in the pivoted bearing 4:? which is placed about the nut 41 at its center and between the ratchet wheels 45 and d6, as shown. Suitable spring pressed pawls 48 pivotally mounted on the gears 4C3 and 44 permit these gears to revolve idly in one direction only,

and force the same to turn in the other direction with the nut 41, and the nut 41 turns in one direction when the screw 36 goes down, and in the other direction when the 'screw'36 goes up through the nut. A third beveled pinion gear 49 sleeves on the pivot of the center bearing 47 which is near the sprocket wheel 35, and the sprocket wheel 35 is placed on the same sleeve as the gear 49, and fixed thereto so that the pinion and sprocket revolve together. The result of this construction, as above described, is that while the cover 2 is raised or lowered the sprocket wheel 35 is always driven positively in the same direction, and it is always driven so as to wind the motor 11 of the talking machine. It will also be noted that the center bearing-t7 is pivotally connected to the casing 38 at each end so as to permit the necessary oscillation of the nut 41 while the screw 36 is moving in the direction of its axis through this nut which is also rotated about the pivot point t7 by the pivot connection with the cover 37 causing the upper end of the screw to move in the arc of a circle whose center is the hinge f. To prevent overwinding, the sprocket wheel 33 is provided with a suitable thrust ball bearing 50 on its shaft 51 and this shaft 51 also carries one member of a suitable friction clutch 52, through which it is connected to arbor shaft 5t ofjmotor 11". The clutch 52 is preferably secured instead of the crank and the sprocket wheel 33 runs idle on the shaft 51 and is made to drive the shaft 54 by the ball bearing 50 with its cup 53 which engages a spring 55 which is pressed against the cup 53 by means of a nut 56 which has lugs 57 that ride in the intense parallel grooves 58 of a guide 59, which is suitably mounted at one end in a bracket 3 secured to the under surface of platform 8 and at its other end against the casing 3. The shaft 51 is screw threaded to receive the nut 56. This shaft 51 is also provided with a knurled thumb piece 59 which is fixed thereon and adapted to turn it, and with a collar 60 with a roughened surface that is adapted to engage a corresponding collar 61 fixed to the casing 3, so that under no circumstances will the shaft 51 revolve except when it is turned through the knurled end 59. From this it is obvious that by turning this end 59 in one direction the tension of the spring 55 is increased, whereby the main spring of the motor 11 may be wound tighter, and by turning the end 59 in the other direction, the spring 55 is put under less tension, and thereby the spring of the said motor 11 is wound with less tightness before the slipping takes place in the friction clutch .52.

While 1 have shown and described one embodiment of my invention, it is obvious that my invention is not to be restricted thereto but is broad enough to cover all structures coming within the scope of the annexed claims.

Having described my invention, what 11 claim is 1. In a device of the class described, a casing, a movable cover, a spring motor, a screw shaft on said cover, and mechanism connecting said screw shaft and spring motor to cause the motor to be wound in one direction by raising or lowering said cover.

2. In a device of the class described, a casing, a cover, a spring motor, a screw shaft connecting the cover and spring motor, mechanism engaging said screw shaft to cause a winding of the motor in one directon by either raising or lowering of the cover, a friction clutch on the winding mechanism and means for increasing and decreasing tension on said clutch.

3. In a device of the class described, a

casing, a cover "connected thereto, a screw shaft pivctally secured to said cover, means engaging said screw shaft for rotating e motor shaft in one direction by a raisin or lowering of the cover, a friction clutc on the motor shaft, and means on the cuterior of the for regulating tension on said clutch wereby slippage may be causedat a desired point. t. 111 a device of the class descri, a casing, a cover connected to said casing, a screw shaft pivotally connected to said cover, a spring motor, and mechanism connecting said spring motor and the screw shaft so that said motor may be wound in one direction by raising or lowering sai cover.

5. In a device of the class described, a

casing, a cover, a hinge connecting said cas Signed at the city of New York, county ing and cover, a screw shaft, a spring 1110- of New York and State of New York, this tor, a friction clutch connected to said mo- 4th day of June, 1914:.

tor, and mechanism connecting said fric- LOUIS A. FREEDMAN. tion clutch and screw shaft whereby said Witnesses: clutch may be driven to wind the motor H. RAnzINsKY,

whenever the cover is raised or lowered. ARTHUR MCNALLY.

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