DE93835C - Striking mechanism with a hammer moved by the pendulum of an electrically operated clock - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The movement is driven in the known manner, so that. only every 40 to 50 pendulum oscillations once an electric circuit occurs, with the aid of an induction coil and an anchor on the pendulum, the gradually reduced pendulum swing is increased again will. '' The hammer shaft of the striking mechanism is moved directly by the pendulum and the force required for this through frequent electrical circuits in the pendulum oscillations generated automatically, so that every special electric circuit device on the striking mechanism no longer applies. Since an electric circuit is only necessary for the movement after about 40 to 50 oscillations is and the 'possibility exists, one. To give an electric circuit with every oscillation, so there is enough power to operate the striking mechanism.

In the drawing, FIGS. 1 to 6 represent the Stromschlufsregulirung for the walking gear and the actuation of the striking mechanism by the oscillating pendulum guide.

Figs. 1 and 5 show the rear views, 3 and 4 the front views of the pendulum clock; Figures 2 and 6 illustrate Side views of the clock. »

The actual pendulum and the induction apparatus are not shown in the drawing, since these arrangements are known in and of themselves.

The drive of the pointer mechanism (Fig. 1 and 5) is carried out by a pawl D mounted on the pendulum guide B , which engages in the ratchet wheel E , from whose axis the drive of the pointer mechanism by means of an ordinary spur gear ratio or - as assumed in the drawing - by means of worms - and angle drive is effected. The swing of the pendulum is shortened by only a small amount after each oscillation when the movement is operated alone, and a larger number of oscillations of the pendulum or respectively is required. a corresponding reduction in its deflection before an electric circuit occurs and the induction apparatus becomes effective. However, the ratchet wheel E may only be advanced by one tooth for each deflection. So that this also applies to larger pendulum swings, sliding bridges R and / are attached next to the indexing wheel E so that they allow the indexing pawl D resting on it by its own weight to touch the indexing wheel E only for the length of one tooth.

In order to prevent the ratchet wheel from moving backwards and to hold it exactly in the position in which it was brought by the pendulum oscillation, a friction disk F is mounted on the axis of the ratchet wheel, against which a brake lever f is in a known manner constantly leans on.

Since the pendulum oscillations would naturally gradually become so short that they are no longer sufficient for switching by one tooth of the ratchet wheel E , an induction apparatus is used to cause the pendulum B to oscillate again before this moment occurs, its anchor

at the lower end or also on another part of the pendulum in such a way that it swings so close to the poles of the induction apparatus that they are still attracted to them when the power line is closed.

The power line is connected to the clockwork by terminals M ¹ and M ² , insulated from each other and from the clock, in which the adjusting screws m ¹ and m ^{2 are} mounted.

In order to close the current when the oscillation arc of the pendulum B is reduced accordingly, a lever system is attached, consisting of the two two-armed levers G and H, the latter of which the two contact springs h ^l and /? ² , which in the rest position of the lever H are kept away from the contact tips m ¹ and m ^{2 by its own weight.} If the pendulum swing is too short, the upper tip g of the loosely hanging lever G lies next to a tooth of the ratchet wheel E so that the incision lies directly in front of the tip. The pawl D falling into the incision then also comes to rest in front of the tip g and when the pawl is connected upstream, the lever G is turned, the lower part g ¹ strikes the lever H , turns it and brings its springs h ¹ and ft ² in contact with the contact screws m ¹ and in ² , whereby the electrical circuit is established. If the pendulum swing is still sufficient, the deeper part of the gap of a tooth of E is still a little behind the tip g and the pawl slides away over the tip g. The arm g ^l can be rotated on the lever G and can be deflected laterally in the direction of the lever axis and slides laterally past the inclined tip h of H when g ¹ returns to its rest position (FIG. 6) without rotating the lever H. The position of the induc-. The apparatus is arranged in such a way that the armature swinging with the pendulum is at an appropriate distance from the magnetic poles at the moment of the current connection, in order to be able to be attracted by them.

For the striking mechanism, the part of it which is intended to be triggered by the pointer mechanism and to regulate the number of strikes is used, that is, for the so-called distribution, the same construction is used as for the generally customary striking mechanisms. It consists of the star W with worm W ¹ and pawl w, the rake V with teeth ν and lever arm V ¹ , scoop U and trap T ¹ with release angle i ⁵ . Only the creator U, which is intended to intervene in the teeth ν of the rake V , is placed on the lever arm of the lever U ¹ , on whose axis 3 the hammer lever U ³ sits, while in ordinary clocks the creator is attached to a protruding wheel axle is. The trap T ¹ is provided with a right-angled extension T and also carries a rotatable hook T and the trigger bracket 7 ~ *. These parts, with the exception of the attachment T and the hook T ² , and their interaction may, however, be assumed to be generally known.

The advantage that this striking mechanism does not require a gear train operated by spring force or weight to operate the hammer, it has in common with electric striking mechanisms. Its novelty consists in the fact that it does not need any electrical device or special electrical action, but that the hammer is only made to strike by the action of the swinging pendulum. This happens if and as long as the connecting piece s * serving as a pusher is located between the pendulum guide B and the hammer lever U ^3. A device is therefore required which, when the clock is to strike, brings the pusher s ¹ into the indicated position, but otherwise keeps it away from it. This is done by the arm S, on which the pusher s ^{J is} rotatably mounted in an inclined position and which sits on a common axis with the locking thumb s ³ , which is held in this position by the latch attachment T and the locking hook T ^3. During the triggering by the pointer mechanism, the latch T ¹ is lifted through the trigger ^{angle T "4} (Fig. 3) and the attachment T moves away from the locking thumb s ³ ; at the same time, the hook t ' ² slides over the nose f ^{3 of} the hook 7" ³ . At the end of the release, i.e. at the beginning of the strike, the latch T ¹ falls back, the hook t ' ² pulls the hook T ^B upwards and this also releases the thumb s ³ , so that the one stuck on the same axis with it Arm S together with pushers s ^{1 can} pass through the counterweight s ² into the space between pendulum guide B and hammer lever U ³ . Now every pendulum oscillation towards this side is transmitted by the pusher s ¹ to the hammer lever U ³ and thus also to the hammer χ . Simultaneously with the blows, the lever U ¹ with scoop U at the other end of the hammer shaft pulls back the rake ν tooth by tooth and brings it into its rest position. When the same occurs, the latch T ⁱ also falls into the rest position and the connection of the hooks i ² and t ³ is released at the same time, so that the locking thumb s ^{3 is} also held in its rest position again and the pusher s ¹ from the space between the pendulum guide B and Hammer lever U ^{3 is} brought.

As can be seen from the description, the present movement regulates its power requirement

and and can use him during the

always automatically and perfectly accurate

instantly

Increase Schiagens many times over, since the operation of the walking gear alone z. B. at most a contact is required every 40 to 50 pendulum oscillations, while a contact is required for every oscillation is possible.

Claims (1)

Sponsorship claim: Striking mechanism for electric pendulum clocks, in which the pendulum swing is increased by electric circuit only after a number of pendulum oscillations, characterized in that the striking mechanism hammer shaft 3 is actuated directly by the pendulum, in that the pendulum guide B with each oscillation is attached to one on the arm S , on the arm U ^{3 of} the hammer shaft hits the pusher s - ¹ after the locking thumb s ³ attached to the shaft 1 has been released by an ordinary hammer mechanism when the trap T ¹ is raised, whereupon the arm S together with the end of the striking and sinking of the trap T ¹ Stöfser s is ¹ lifted by the trap T ¹ T DAF the shaft ι rotates back and the locking hook T ³ the locking thumb s ³ intercepts. 1 sheet of drawings.