DE418960C - Electrically heated cooking vessel with automatic switch-off of the heating current in the event of a certain reduction in content - Google Patents

Description

(L 59094

The invention relates to an electrically heated cooking vessel with an automatic power switch-off. In the case of such devices, it is important to avoid sparking when the device is switched off automatically to ensure that the switch-off occurs as suddenly as possible.

In the previously known devices in which weight reduction or ίο by shifting the center of gravity of the cooking vessel, which is caused by overcooking the vessel contents are caused, only a slow switch-off of the current takes place, which an unsafe functioning and before in the wake of all things the formation of long sparks.

According to the invention, the disadvantages that the necessarily slow movement of the organs that interrupt the circuit ao, eliminated by the opening contact is held under spring action.

In the drawing are two embodiments of devices according to the invention shown, namely show:

Fig. Ι a longitudinal section through an embodiment an electrically heated cooking vessel,

Fig. 2 is a view from below of Fig. 1 after the bottom has been removed,

Fig. 3 is a longitudinal section through another embodiment, with the power on Heating current, and

Fig. 4 the same device with the heating current switched off.

Both the device according to Fig. 1 and 2 as well as the device according to Fig. 3 and 4 are provided with a switch α provided on the bottom of the vessel, which can only be operated when the cooking vessel is filled with water or cooking liquid.

When the switch σ is switched on, a spring b is tensioned, which automatically causes the contact to be interrupted after the switch-on interlock is released. The switch-on

It is locked by locking noses c, d, one of which, namely "c ^." The movement of the locking lug c takes place in the embodiment according to Fig. Ι and 2 by transmission of the movement of a float e, which dips into the cooking vessel and moves down as the liquid level drops, the locking lug c being raised.

In the embodiment according to FIGS. 3 'and 4, the movable locking lug c is seated on a weight-loaded lever / which rests on a pivotable foot g of the cooking vessel. When the cooking vessel is full, the weight lever f is pressed against the vessel bottom g so that the movable locking lug c comes into the area of the switch lock.

With weight reduction. By lifting or boiling the cooking vessel, the weight lever / cooking vessel must lift off the base g and thereby pull the movable locking lug c out of the area of the switch lock. The spring b provided on the switch σ ensures, as mentioned, that when the switch-on interlock is lifted, the contact is interrupted so suddenly that spark formation is practically impossible.

In the embodiment of the device according to FIGS. 3 and 4, as the illustration shows, the locking lug c is particularly sprung with respect to the weight lever f. The purpose of this is to make switching on easier and, when the switch α is pressed in, to make it unnecessary to press down the weight lever f and thus to lift the entire cooking vessel.

Claims (2)

Patent Claims: i. Electrically heated cooking vessel with automatic switch-off of the heating current in the event of a certain reduction in content, characterized in that an on / off switch (a, d) under spring action (b) is held in its contact position by a locking hook (c) which is either by a float (e) or by a weight lever (/) with a certain reduction in the contents of the cooking vessel. 2. Electrically heated cooking vessel according to claim i, characterized in that the weight lever (/) which rotatably carries the locking hook (c) is supported on the bottom (g) of the cooking vessel base, while the base itself rotates with the base (g ) is connected. / 7όό. S. Mb. B