DE522982C - Signaling device for scales - Google Patents

Description

Signaling device for scales For quick weighing or for checking In the dish of bulk goods, inclination scales are used very often. and so-called plus-minus scales, which are set to a certain weight and their pointer points to o on the scale when the weighing pan is loaded. The plus and The minus weight of the item to be weighed is displayed on the scale and can be read off there will.

This is also the case for the plant management or the operator of packaging machines as well as other supervisors who are away from the scales. one To enable control of the excess or underweight, one already has with such Scales have an electrically operated signaling device, which indicates the excess or underweight indicates built-in. This signaling device comes into operation when the goods to be weighed are in operation exceeds a certain multiple or minor court.

The invention now aims. such a signaling device for displaying of overweight or underweight to create which the scales in the exact weight display not influenced and can be adjusted to any proportions in the simplest possible way is. The essence of the invention is seen in the fact that that of the contacts of the vibrating Partly (e.g. of the court gazette) touched counter-contact as a result of this contact is electromagnetically pulled to the side by an armature so that the pointer is unobstructed «- can swing. The anchor that ensures sufficient contact actuates auxiliary switches for the signal circuits, and by means of adjusting screws and auxiliary pointer you can use the device over the entire weighing range of the scale adjust in any way. The signaling device can be optional as optical or acoustic device. The use of auxiliary switches. which create a 1 @ sub-circuit to a once closed circuit Maintaining regardless of the initial contact is in itself already known.

An embodiment of the invention is shown in the accompanying drawing shown. Fig. I shows the front view of the adjustable signal arrangement. Fig. Fig. 2 shows a side view of the same. Fig.3 shows a circuit diagram of the signal arrangement.

The invention can be grown on any inclination scale. The cheapest is the arrangement on inclination scales in which the dish is indicated by a pointer will.

On the existing carrier i for the scales 2, the carriers 3 and 4. attached, which can be adjusted by means of the adjusting screws 5 and 6. the Setting pointers 7 and 8 indicate the court in which the signal contact is in use occurs. The magnets 9 and i o are mounted on the carriers 3 and 4. The anchors 1z ' and 14 'of the magnets are rotatably mounted and carry the contacts i i and 12 on the armature 12 'of the magnet 9 and the contacts 13 and 14 on the armature 14' of the Magnets ok If the magnets are de-energized, their armature 12 ', 1a' are through the Springs 15 and 16 withdrawn to a stop. The power supply to the on the pointer 17 attached contacts 18 and ig takes place in a known manner via the Mercury contact 2o. The mode of action is most clearly recognizable by the circuit diagram shown in Fig. 3.

The current coming from plus is passed through the O_uecksilberkontakt @ o after the contacts i8 and ig. If the pointer is now set by the application of overload with contact 18 against contact i i, then the circuit of the magnet closes 9 and pulls the armature carrying the contacts i i and 12 to itself. This will make the Contact i i pulled to its side so that contact 18 is free and pointer 17 is unimpeded Can swing on. When the contacts i i and 18 are touched, the circuit closed to the plus signal; around now this circuit after evading the contact Keeping it closed more mature is achieved by the movement of the armature i2 'of the magnet 9 the contact 21 closed, which the circuit of the signaling device in is known to keep it closed. When removing the load from the scale When the pointer 17 goes down, it hits the contact with the contact 18 12; this closes the circuit to magnet 22 and attracts armature 23, which opens the contact 2.1 by means of the thumb 25 and thereby the circuit of the magnet 9 interrupts: the armature of the magnet 9 is withdrawn by the spring 15, whereby the contact -, i is opened. This turns the circuit into a positive signal interrupted and the signal deactivated. By avoiding contact i2 the pointer can swing freely back to the zero position; at the same time the circuit interrupted to the magnet 22, so that contact 2d. closes again.

The minus signal is activated in the same way. at If the load is too light, the pointer swings out to the minus side and pushes with contact i9 against contact 13. The circuit to magnet io is thereby closed, at the same time also the circuit to the minus signal. By closing the Circuit to the magnet io becomes the armature i-. ' this magnet with the contact i3 pulled to the side so that the pointer 1 7 can continue to swing freely. By the swinging out of the anchor 14. ' the contact 13 is moved to the side and opened. At the same time will. the contact 26 is closed, which further actuates the Mint: ssignal. If the load is removed again, the pointer goes back to the zero position and presses with your contact ig against the contact i.1; this creates the circuit closed to the magnet 22 and opened exactly as before the contact 24, whereby the circuit to the minus signal device and also the circuit to the magnet io is interrupted. The contact 1.4 is pulled to the side by the spring 16, so that the pointer 17 can return to the zero position unhindered. The minus signal device is interrupted again.

Claims (3)

PATENT CLAIMS: i. Signaling device for scales to display excess or underweight, in which the weight indicator or another swinging with your lever mechanism Partly electrically separated signals for multiple or «-. Indicates underweight, characterized in that the of the contacts (18 and i g) of the oscillating Partly (e.g. of the weight indicator 17) touched mating contact (11, 12, 13 or 1.1) as a result of this contact by an armature (12 'or 14 ") electromagnetically to the side is pulled so that the pointer (17) can continue to swing unhindered. 2. Signal system for scales according to claim i, characterized in that the evasion of the touched Contact (11, 12, 13 or 14) causing armature (12 'or i4) the switches (21 or 26) the signal circuit closes or opens. 3. Signal system for scales according to Claims 1 and 2, characterized by adjusting screws and pointers (5 and 7 or 6 and 8), by means of which the device over the entire weighing range of the scale a certain weight can be set.