DE391899C - Device for displaying the exceeding of dangerous temperatures in machines u. like - Google Patents

Description

Device for indicating that dangerous temperatures have been exceeded in machines and the like. The subject matter of the invention is a further development of patent 375707.

The main patent relates to a device for indicating the crossing dangerous temperatures in machines and the like, at which the maximum and minimum contacts of a thermometer two different circuits are closed will. The present arrangement is now characterized in that in addition to the two circuits, which two light bulbs to indicate the dangerous to hohfn and too low cooling water temperature contained in the internal combustion engine, a third circuit is also provided, which is independent of the first two Circuits another light bulb for clear - display the fluctuations between which switches on the cooling water temperature that is too high or too low. So it is possible with this device on the dangerous too high and too cold cooling water temperature to alert the internal combustion engine; so can those in between Temperatures can be readily seen.

In the drawing, the device in Figs. X to 4. is exemplified Execution shown.

Fig. Z shows a view with partial sections, Fig. 2 shows a cross section, Fig. 3 is a complete view, Fig. Q. a side view with inserted contact of this.

In the two-part housing z, which can have any shape, is the plus contact 2 for the light bulb 3, which indicates the temperature is too high, built-in. The contact 2 the current is through a contact 4, the is connected to a power source 5, is supplied. Contact 4 is on one Connecting rod 6 or the like. Arranged by a screw 7 with the positive contact 2 of the light bulb 3 and through a screw io to the positive contact 9 of the light bulb 8, which indicates a temperature that is too low, is conductively connected. Through a further contact ii, which is connected to the negative contact of the power source 5, the negative current is passed into the mercury of the thermometer 12, which, if the temperature is too high, the circuit 5, 11, 12, 13, 14, 3, 2, 7, 6, 4, 5 through the wire 13, which is conductively connected to the socket 14 of the light bulb 3, closes, so that it lights up to indicate that the temperature is too high has been. If the display shows that the temperature is too low, the procedure is as follows As soon as the mercury of the thermometer 12 exceeded the too low temperature has, the wire 15, which is melted into the thermometer 12, with the Contact 16 connected. This (16) is connected by a wire 26 to a relay 17, which can be attached at any location, in connection and is through the positive current of the power source 5 is fed. The circuit 5, 11, 12, 15, 16, 26, 17, 341, 5 of the relay 17. Is driven by the negative current of the power source 5, which through the contact ii and wire 18, which is below the too low temperature point in the thermometer 12 is melted down, closed. This creates a lever i9 o. Like. Attracted by the core of the coil, and there is a contact 2o with the power source 5 and connected to the socket 21 of the light bulb 8 by a contact 22 and wire 23 is interrupted so that the light bulb 8 in the circuit 5, 25, 20, 36, 22, 23, 21, 8, 9, io, 6, 4, .5 does not light up. As soon as the temperature is too low is reached, the circuit of the relay 17, since the wire 15 is just above the melted at too low a temperature, interrupted by the mercury, so that the lever i9 is pulled away from the core of the spool by a spring 24. This turns the circuit to light bulb 8, as lever i9 above contacts 25, 20 bridged, closed, so that the incandescent lamp 8 lights up.

To temperature fluctuations that are between too high and too low Temperature point, can be read in the dark, is in the housing i another light bulb 27 installed as desired. This becomes the same from the plusstroin fed that a lead wire 31 of the same with the connecting rod by a Screw 28 is connected. In the circuit 5, 4, 6, 28, 31, 27, 32, 29, 30, 34, 5 of the lamp 27 there is also a contact 29, which is connected to the negative current of the power source 5 is connected by a wire 32 in which a switch 34 is arranged. Around To illuminate the device brightly, a reflector 33 can be built in as desired. If one or the other of the three lightbulbs 3, 8, 27 should not light up, switches 34, 34.1, 35, 36 can be attached at any location, which switch the respective lamp off or on. Contacts 4, 11, 16 and 2-2, 29 can be designed and built in as desired, as well as the contacts 9, 2 of the light bulbs 3, B. The housing i is closed by glasses 37 and 38; the same are with color or provided with a light-blocking material so that the device is not seen will. The glasses 37, 38 are attached to the ribs 42, 43 of the housing i by screws attached; but there are slots 39, 40 and 41 of paint or the like a glow to see on the one hand the respective lightbulb and on the other hand to see temperatures to be able to read off the thermometer i2. There can also be several light bulbs in the housing i should be built in to draw attention to different temperatures, whereby several contacts and another corresponding line and circuit system are required is.

Claims (1)

PATENT CLAIM: Device for displaying when dangerous temperatures are exceeded in machines and the like according to patent 375707, in which two different circuits are closed by the maximum and minimum contacts of a thermometer, characterized in that in addition to the two circuits (5, 11, 12, 13, 14, 3, 2, 7, 6, 4, 5 and 5, 25, 20, 36, 22, 23, 21, 8, 9, io, 6, 4, 5), which two light bulbs (3 , 8) for displaying the dangerous too high and too low cooling water temperature in the internal combustion engine; a third circuit (5, 4, 6, 28, 34, 27, 32, 29, 30, 34, 5) is provided which, independently of the first two, has a further incandescent lamp (27) to clearly display the fluctuations between the too high and the cooling water temperature is too low.