DE384046C - Device for displaying the spring tension of spring drives for speech apparatus - Google Patents

Description

GERMAN EMPIRE

ISSUED OCTOBER 25, 1923

REICH S PATENT OFFICE

PATENT LETTERING

- JVl 384046 - . CLASS 42 g GROUP

(Hgiooss IXj42 g)

Elemer Horti in Budapest

Device for displaying the spring tension of spring drives for speech apparatus. Patented in the German Empire on September 2, 1922.

There are already devices for the display Spring tension of spring mechanisms for speech apparatus known. With these well-known Devices- will only be a spring drum is used, and also the winding up of the engine is during playback the record difficult. :.

The invention relates to a device for displaying the spring tension, which the disadvantages of the known device

gen avoids and the wind-up of the engine while the disc is playing facilitates or the registration of the difference between the two simultaneous rotary movements, S without affecting the accuracy of the indicator mechanism, the indicator device in all speech apparatus with spring drive, especially in those with two spring drums, one of which is only ίο can be used when opening, the other is only rotated when playing. The device according to the invention is provided by two sets of gear and ratchet gears marked, which the display unit automatically in the one or in move in the other direction of rotation and open while playing the record of the engine or facilitate the exact registration of the difference in rotary movements enable.

Furthermore, according to the invention, the 1 is egg Playing the record-driven dial to the pointer shaft, which is driven by the Winding device coupled spring housing is driven, rotatably mounted, wherein expediently one carrying the dial and concentrically surrounding the pointer shaft Sleeve is used.

The drawing shows two exemplary embodiments of the subject matter of the invention illustrated.

Fig. Ι is the side view of the engine and the display device.
Figs. 2 and 3 represent top views and horizontal sections along line AB and CD in Fig. 1.

Fig. 4 shows the dial. In the
Figures 5, 6 and 7 illustrate a further embodiment of the indicator device, namely is

Fig. 5 is a side view or a vertical section through the axis of the display device.

Fig. 6 shows a top view or a horizontal section along line H-II of Fig. 5. In the

Fig. 7 is the dial of the indicator mechanism and the hands in a top view after removal of the protective housing illustrated. The box cover of the speech set is marked with i, the crank with 2, the one through the crank driven axle with 3, the rotation of the axle 3 on the cylindrical spring housing 6 and 7 transmitting bevel gear drives are denoted by 4 and 5. The upper part of the spring housing 7 is connected to a gear 8 which engages in the gear 11 keyed on the axle 10. That on the Axis keyed gear 11 rotates through gear 12 the axis 13 on which the turntable 14 seated. A regulator of any design, not illustrated in the drawing affects the axis 13 at 15.

When pulling up the spring housing 6, the not illustrated in the drawing holds Brake 1 known design, the spring housing 7 fixed, so that the spring or springs as a result the rotation of the housing 6 relative to the housing 7 can be tensioned.

After completion of the winding, the spring housing 6 is in its instantaneous Position automatically recorded. The spring housing 7 is after lifting the brake from the turntable 14 in the direction of the arrow set in rotation.

The axis of the display mechanism is 16, the pointer 17, the one on the box cover plate ι attached dial with 18, which on the axis 16 loosely mounted gears with 19 and 20, which have opposite serrations wedged on the axis 16 Ratchet wheels with 23 and 24, which the rotary movement of the gear 19 on the ratchet wheel 23 transmitting pawl with 25, which the rotary movement of the gear 20 on the ratchet wheel 24 transmitting pawl with 26, the attached to the outer surface of the spring housing 6 stop with 27 and on the The outer surface of the spring housing 7 denotes the attached stop with 28

During the winding up, the stop 27 will rotate the gear ig with a tooth division ^{with every L T} indrotation of the spring housing 6. The gear 19 switches the axle 16 further by means of the pawl 25 · and the ratchet wheel 23. In this direction of rotation of the axis 16, the ratchet mechanism 26, 24 remains unactuated.

After the end of the winding process and after the brake has been released, the spring housing settles 7 in motion and with each revolution, the stop 28 switches the gear wheel 21, which is loosely rotatably mounted on the axis 22 and the gear 20 engaging in the latter with a tooth division further. The gear 21 is used to change the direction of rotation. The gear 20 transmits this Movement on the axis 16 through the mediation of the ratchet mechanism 26, 24. The number of 1x0 Teeth of the gears 19 and 20 is the same in this embodiment.

The axes 16 and 22 are mounted in the frame 29, whereby the display mechanism easily can be mounted on the engine of a speech set with two spring drums.

Deviating from the embodiment shown, instead of the stops 27, 28 full gear rims used or the existing gears to drive the display unit be used. At the last

S84046

mentioned design must be appropriate decelerating Transfers are used.

When the spring is pulled up while the record is being played, the indicator mechanism register the difference between the respective mutual movements.

The division of the dial 18 is established in a practical way.

ίο The embodiment according to Fig. 5, 6 and 7 aims in addition to simplifying the Construction of the display device to enable it to be drawn up during the Playing the record without affecting the accuracy of the display mechanism.

In this embodiment, the den

Pointer 17 carrying axis i6 ^a rotatable in the sleeve i6 * carrying the dial 18

stored. On the out of the sleeve i6 ⁶ i

projecting lower end of the axle i6 "is a J ratchet wheel keyed 19, while the ratchet wheel is mounted on the sleeve i6 ⁶ twentieth The 'ratchet wheel 19 is], the ratchet wheel 20 is moved by the stopper 27 by the stopper 28th To brake and ! preventing: movement in the opposite direction of the ratchet wheels 19 and 20 serve the feathers' the pawls 30, which for the purpose of tone damping having a vulcanized fiber head part 31 is provided are, on the sleeve i6 ^ft splined collars | 32, 33 limit the shift. of the sleeve in the axial direction, while the adjusting ring 34 wedged on the axis i6 ″ prevents the displacement of the axis ΐό ^α in the sleeve i6 *.

The support frame or bracket 29 is on the lower side of the cover plate 1 of the speaking machine box fastened by means of screws 35. The bracket 29 has the elongated bores for the implementation of the screws 35 36, which allow a fine adjustment of the bracket 29 to the spring housings 6, 7.

The ratchet wheels 19, 20 can also be replaced by gears.

The circular sector i8 "of the dial 18, which corresponds to the fully tensioned spring can be covered with a striking red color will.

In the case of speech sets whose design differs from the embodiment shown, the device according to the invention is used in such a way that the pulling device or the spring housing coupled to the winding device rotates the pointer axis, while the axle or sleeve carrying the dial with the driven drum connected or vice versa.

The operation of the device is as follows: When the spring is wound, it rotates the pointer 17 above the immovable dial 18 backwards. After ventilation The brake also rotates the dial backwards and finally arrives the relaxation or basic position of the dial marked with "o" below of the pointer .. If the spring is wound up while the record is being played, so the pointer rotates relative to the rotating dial in the direction of movement of the Dial. If several spring housings come into effect one after the other, the Pointer axis expediently coupled with the first directly to the winding device Spring housing connected.

The drive of the pointer axis and that of the dial axis can also be changed.

Claims (3)

Patent Claims: 1. Device for displaying the spring tension of spring drives for Speech apparatus in which the display mechanism is in one when the engine is opened and in the other when it is played back Direction of rotation is moved, characterized in that the movement of the corresponding to the drawing or playing Indicator movement by two groups of gear and ratchet gears (27, 19, 25, 23 or 28, 21, 20, 26, 24), which with the spring housings (6, 7) are connected, which makes it easier to wind up the engine while the record is playing and an accurate Registration of the difference in the rotational movements is made possible. 2. Apparatus according to claim 1, characterized in that the down- - Play the record-driven dial (18) to the shaft (i6 ^a ) carrying the pointer (17), which is driven by the spring housing (7) coupled to the winding device, is rotatably mounted. 3. Apparatus according to claim 2, characterized in that the dial (18) sits ^{on a pointer shaft (i6 B} ) concentrically surrounding rotatable sleeve (i6 ⁶⁾ 1 sheet of drawings.