DE155996C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

- JVr 155996 CLASS 83 b.

The electrical slave clocks previously in use could often become tower clocks therefore not be used because the design did not allow it to be exposed to the wind to attach free pointers, which is why a glass closure was always necessary, which was the visibility very impaired. This assistance is eliminated by the present invention. In the accompanying drawing shows

Fig. Ι the view of the work on the rear frame plate,

2 shows a schematic circuit arrangement and

3 shows the equalizing contact.

The movement consists of a gear train i, 2, which is between the frame plates 3, 4 is stored. The shaft 5 of the minute wheel 2 protrudes from both frame plates 3, 4, whereupon on the one hand the pointer line,

on the other hand the transmission is attached to a control dial. The ratchet shaft ι 'protrudes from the rear frame plate 4 and carries a ratchet wheel 6 provided with many fine teeth, which is rotated by a hammer 7 by means of a pawl 8. The translation of the movement is arranged in such a way that one rotation of the minute wheel 2 equals 60 revolutions of the ratchet wheel 6. On the shaft i ^{1 of} the ratchet wheel 6 sits a disk 9, which is provided with a hard rubber insert 10, whereupon one of the frame plate 4 isolated spring 11 loops. The feeder 13, which rests on the contact pin 14, is also seated on an insulated plate 12 between the frame plates 3, 4 (FIG. 3). The micro, grooved wheel 2 is provided with a hard rubber pin 15, which spring 13 raises all the hours on the duration of one minute, is lifted so that the spring 13 of the contact pin fourteenth

The mode of operation of this side tower clock is now as follows:

In the master clock there are two contacts, one minute contact 19 and one Hour contact 20 (Fig. 2). The former is set by the master clock every minute in the long run about one second, the latter every hour around the 60th minute for a period of 20 seconds closed. Furthermore, from the 58th to the 59th minute of every hour the Minute contact 19 held closed for 30 seconds instead of one second, whereby in the case of the slave clock remaining behind against the master clock, the slave clock for so long is advanced until the correct pointer position is reached, which can be seen by means of the Neef Hammers can be reached safely. The extraordinarily rapid movements of Neef Hammers, which have a great deal of power, are opened by a pawl 8 resiliently attached to the hammer itself that with many teeth adapted to the short vibrations of Neef's hammer provided ratchet 6 transferred, whereby this rotated at a certain speed will. A fine spring 18 prevents backward movement. The speed

Claims (2)

speed with which the ratchet 6 is rotated depends on the one hand on the length of the oscillation arcs of the Neef's hammer, on the other hand on the size of the ratchet 6 and is dimensioned in this case so that one revolution of the wheel 6 is about ι '/. , Takes seconds. The circuit diagram is as follows: A line leads from the carbon pole of the ίο battery B (Fig. 2) to terminal c of the Neef hammer 7, from the spring 11 via terminal d to the zinc pole of battery B on the one hand, and on the other hand to a pole of the minute contact 19 of the master clock . Furthermore, a line goes from the other spring of the minute contact 19 to the one spring of the hour contact 20 and from there to the terminal α of the slave clock, which is connected to the spring 13 and this (during the hour by resting on pin 14) to the frame plate 3 is also conductively connected to all metal parts of the work that are not isolated from the frame (with washer 9). The frame plate 3 is connected to the second spring of the hour contact 20 via terminal b. The game is as follows: If the minute contact 19 in the master clock is closed, the current passes from the carbon pole of battery B to terminal c of the Neef's hammer, through the same to terminal b, on to frame plate 3, pin 14, spring 13 Terminal α to minute contact 19 and from there back to the zinc pole of the battery. If the contact 19 is now interrupted again within a second, the current, since the ratchet 6 has not yet completed a full revolution, will take a different path, namely from the carbon pole of the battery B ζην terminal c through the Neefsehen hammer 7 to terminal b - on to the frame plate 3 through the frame to the contact disk 9 of the ratchet wheel 6, through the spring 11 sliding on the disk 9 back to the zinc pole of the battery via terminal d. The current will therefore remain closed in the slave clock until the ratchet wheel 6 has made a full turn, whereupon the spring 11 comes from the conductive part of the circumference of the disk 9 to the hard rubber insert 10 and the current is interrupted. This process is repeated every full minute until (which happens at the 59th minute) the spring 13 is lifted from the contact pin 14 by the hard rubber pin 15 on the minute wheel 2 (FIG. 3); As a result, the connection of the slave clock to the minute contact 19 of the master clock is interrupted and therefore no further power supply can take place as long as the hour contact 20 of the master clock is not closed. This termination occurs approximately 10 seconds before the 60th minute and is released again after 20 seconds (i.e. 10 seconds after the 60th minute). If contact 20 is closed, then at the end of minute contact 19, which takes place exactly on the 60th minute of every hour, the current will take the following path: From the carbon pole of the battery? Via clamp, clamp b, contact 20, contact 19 back to battery B. The clock will continue to work during which movement the spring 13 (Fig. 3) falls off the hard rubber pin 15 on the minute wheel 2, whereby the contact with pin 14 and thus the direct connection of the slave clock with the minute contact 19 of the master clock is restored. In the event of the slave clock remaining behind against the master clock, the slave clock will run forward from the 58th to the 59th minute as a result of the 30-second closure of the minute contact 19 until the spring 13 is lifted from the contact pin 14 by the hard rubber pin 15, whereby the correct pointer position has been reached with the master clock; this is followed by the closure of the contact 20, followed by the closure of the contact 19, whereupon the further work for the sequence occurs. If the slave clock runs ahead of the master clock, the same can only go until the spring 13 is lifted off the pin 14 and then remains there until the contact 20 in the master clock is closed, whereby the correct pointer position is reached again. Sponsorship γ claims: 1. Electrical slave clock, characterized in that one is used to drive the Pointer serving ratchet wheel (6) ■ by the vibrations of a Neef's hammer (7) is incremented and rotates every minute, for the purpose of not jerking the hands, but slowly (approximately within 1 '/, seconds) by one minute further. 2. Electrical slave clock according to claim I, characterized in that a spring (13) attached to the minute wheel (2) to correct the hands Hard rubber pen (15) is lifted every hour for a minute from a pen (14) so that the current remains interrupted respectively. the pointer is advanced until the hard rubber pencil (15) the spring (13) lifts off the pin (14) and thus brings about the same pointer position as the master clock. 1 sheet of drawings.