DE22320C - Electric striking mechanism for electric pendulum clocks - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The construction of this striking mechanism uses an electric pendulum clock (Hipp system or also another one), in which the pendulum has the function, the pointer mechanism in motion bring to.

The movement takes place in the following way, as shown in the accompanying drawing:

On the back of the board P, Fig. 1 and 2, there is a lever H rotatable at point α , which is attached to the tips of the regulating screws ^ and .S ¹ with every movement of the seconds pendulum O selected in the present case to the right or left moves towards one side and carries the slide lever b attached to an extension with it.

The purpose of the latter is to set the ratchet wheel r with the ratchet c in motion by means of the regulating weight G.

The lever b is guided by the bridge A and the regulating screw d in such a way that it can never advance more than one tooth of the second wheel r .

The theory of the movement of the lever H is illustrated in FIG.

Let C be the suspension point of the pendulum O, SCS ¹ the stop angle, so that the path of the slide lever h becomes the same with every movement and the moments of force acting on the lever H in £ and S ^{1 are the} same, the lever must be designed in this way be, that CS : CS ¹ = Sa: S ^l a, which can be found empirically by a sketch like Fig. 8.

The movement of the second wheel r is transmitted to the minute wheel 2 and 3 and the hour wheel s on the other side of the plate by the usual change wheels 1 and 4, Fig. 5 and 6.

The execution of the striking mechanism now consists of the following:

Between the bridges B and B ¹ , FIGS. 1, 2, 3 and 4, of which B ^{1 contains} the pivot point of the wheel r , there is a wheel R, which is shown in FIG. Originally 90 teeth were incised on its periphery; then after one, two, three, four etc. teeth one tooth is filed away so that, beginning with one tooth, groups of two, three, four etc. up to twelve teeth remain.

• The teeth are the same as those of the second wheel r, which has 60 teeth. The diameters of both wheels are therefore related to one another as 60:90 or as 2: 3.

The slide b is so wide that it can engage the teeth of both wheels R and r at the same time and push both forward together until it encounters a gap in wheel R. This now stands still and the wheel r moves on alone.

During the movement of the wheel R , the locking hook e, FIG. 1, is raised; the screw attached to the same g gives a contact of the separated through a pad isolirende D f springs and / \ can be regulated whose distance from each other by screws at E and E ^x.

E and E ¹ are connected by wires to the battery and an electromagnet with a hammer and bell.

The forward movement of the wheel R by one tooth, as often as the locking hook e is lifted as a result, will result in a blow on the bell.

At the end of each hour, the wheel R is advanced by one tooth by a slide Ji, FIGS. 1, 4 and 6, so that the slide b can again engage with the wheel R.

The movement of the slider h consists in the following:

The change 4, FIGS. 5 and 6, which makes one rotation every hour, carries a pin i which moves the lever F , which is rotatable at point k, in such a way that the slide h retracts and when it falls, which is reinforced by a spring e the wheel R now advances one tooth.

However, so that the slide Ji does not remain in contact with the same during the movement of the wheel R , since it is rotatable about the axis m, FIGS. 1, 5 and 6, as soon as R advances, it falls out of the teeth of the same and rests by means of a pin η located on the back on the spring p (Fig. 4 shows this at 1 on an enlarged scale).

When the lever F and the slide h move backwards, i.e. when the pin i of the change 4 engages the lever F , the pin η of the slide, Ji slides between the inclined plane q and the spring / through, Fig. 4, 2 and 3 .

When the lever F drops, i. H. as the slide Ji moves forward, on the other hand, the pin η slides up the upper surface of the inclined plane q and guides the slide Ji into engagement with the wheel R, Fig. 4, 4.

The point at which the slide Ji engages in the wheel R is chosen so that as often as there is a gap at the top, i.e. the wheel R is at rest, the slide h must always hit a tooth.

This tooth is the 48th from the gap in which the ratchet hook e engages (gaps counted as teeth and in the right direction).

So that the wheel R, after it has been pushed forward by the slide Ji, Fig. I, does not itself make a reverse movement during the retraction of the lever b , a safety spring ί is attached, the tip of which rests on the tooth 11 (counted as above) .

The screw t prevents the tooth following a gap from throwing the slide lever b and thereby the locking and contact lever e a little upwards and causing one contact and thus one blow too much when the wheel R is moved rapidly by the slide Ji.

The striking device attached to the clockwork consists of a wheel and the associated movement mechanisms.

With another Heise wheel, you can also add a striking mechanism for half an hour and a quarter.

Claims (1)

Patent claim: On electric pendulum clocks the electric hammer mechanism, consisting of the wheel R in connection with the ratchet wheel r, the lever H , which can be rotated at point a, ^{with the regulating screws .S 1} and ^ ¹ and the regulating weight G , the slide lever b, the bridge A with regulating screw d , the screw t, c to the locking hook, the catch hook e g with screw, the separate by the isolirende pad Ό springs / and / ', the screw e and e \ the about the axis m rotatable lever Ji, n the pin, the spring p, the inclined plane q, the pin i attached to the change 4 and the pendulum O; all these parts in the combination as described and shown in the accompanying drawing. For this purpose I sheet drawings.