DE1220153B - Measured value scanning device on measuring devices, in particular scales, with elements for scanning the setting of a feature carrier which is adjusted according to the measured value to be determined - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

GOId

German class: 42 d- 2/50

Number: 1220153

File number: K 30174IX b / 42 d

Filing date: October 25, 1956

Opening day: June 30, 1966

The invention relates to a measured value scanning device on measuring devices, in particular scales, with members for scanning the setting of a feature carrier which is set in accordance with the measured value to be determined with the lower and higher units (ones, tens, hundreds, etc.) assigned sampling characteristics, in which by the sensing means electrical circuits for the actuation of display and. Switching devices controlling registration devices are selected and set up, wherein the tactile organs for the higher units in the direction of the adjustment movement of the interacting with these, shorter in their direction of movement than a division unit for the unit in question dimensioned scanning marks are arranged to be displaceable together relative to these.

Automatic scales are already known in which the weight-dependent setting is made using Is detected by mechanical scanning elements, which in turn actuate electrical contacts, the associated Close circuits for the transmission of the scanning pulses to a registering counter. The disadvantage of the known scanning device is that it is very accurate must be attached and adjusted. Shows e.g. B. the scales exactly 10 kg and is the smallest reading division If the balance is 100 g, then three weight units coincide on the 10 kg division, namely the hundredth 100 g division, the tenth 1 kg division and the first 10 kg division. When scanning the 10 kg layer Even the smallest deviation means an error of an entire unit.

There are also measuring devices are known in which the position of a depending on a Measured variable movable feature carrier is detected, for example, by means of photocell arrangements and the pulses or current surges are counted by a counter. In doing so, on the feature carrier Elevations or other marks be attached by scanning them on the counter in question Correction pulses are given. Alternatively, the photocell arrangement can be dependent on the measured value are moved along a stationary feature carrier.

There has also been proposed a sampler having a correction arrangement is available further back on voters or a relay system.

Finally, a display device for measuring devices is known in which the respective measurement results are set separately according to decimal places by scanning.
in particular scales, with limbs for sensing the setting of one according to which to
setting the determining measured value
Feature carrier

Applicant:

Kooperativa Förbundet Ekonomisk förening,

Stockholm

Representative:

Dipl.-Ing. W. Paap

and Dipl.-Ing. H. Mitscherlich, patent attorneys,

Munich 22, Mariannenplatz 4

Named as inventor:

Heinz Adolf Dzaack, Högbovägen (Sweden)

Claimed priority:

Sweden January 25, 1956 (710)

of incorrect switching whenever the unambiguous sampling of a feature is one of the Influence of the measuring device stationary, movable disk does not appear possible by one of a photo cell controlled magnet, the scanning element opposite the measuring graduation of the movable disk is moved. The rounding-off error of a decade by adjusting one of the tactile organ supporting frame balanced by a certain amount of always the same size. Accordingly are also the holes controlling the light supply to the photocell on the movable one Disc arranged at the same distance from each other. Since a button for each decade is separate from the Sampling is needed is for the rounding point of each decade, i.e. H. at the transition to the next higher or the next lower digit, the same rounding arrangement is necessary.

The invention is based on the object while avoiding the disadvantages of the known measured value scanning devices their advantages through a combination of known and new constructive proposals in a totally new device

609 587/194

to bring to effect together. In this case, a high scanning accuracy and a possibility of correction should be achieved be present on the feature carrier itself.

The invention consists in the above-mentioned measured value scanning device that to avoid an ambiguous scanning one or more of the scanning organs for the higher units along the measuring graduation of the feature carrier which is adjusted according to the measured value to be determined are arranged displaceably in a manner known per se by magnetic force and that as a function arranged by the respective scanning positions of the tactile organs for the lower units excitable magnets are, through the excitation of devices to limit the adjustment path of the tactile organs for the higher units supporting part to be brought into effect, such that when scanning the Features the relative position of the scanning features and the tactile organs for the higher units to one another is practically independent of the number of the lower units.

The position of the pointer disk is scanned after it has come to a standstill and the Circuit is closed for the decades in question. The decimal scanner is moved against the disc, whereby the circuit to a magnet is closed by the relevant contact. Of the The magnet determines the length of the displacement movement of the scanning arrangement for the next higher Decades.

The device is preferably designed in such a way that the shifting of the number of decimal units is proportional; But it is also possible to have such a training that the shift is zero for a certain number of decimal units and is proportional to the number of further such is increased. The scanning pins and corresponding organs of the scanning disc can here be arranged with a relatively large tolerance.

Unlike the prior art, in the case of the registered display device, one cannot Rounding error system are spoken, because there is no situation here that has a rounding error in the real meaning can appear. The push button is moved in any position and is only dependent on the addressed digit of the smallest decade (decimals). Thus takes place at When a magnet is attracted, the pushbutton is shifted by one of the corresponding digits Size, i.e. always about unequal displacement sizes. As a result, the shifting of the Keyholder delimiting notches of different lengths. By fixing a The number of the smallest decade unit is the displacement of all other decade buttons at the same time and made together analogously to the scale deflection angle. Thus, the decimals alone determine the position and size of the shift for all decades together. A major advantage of the registered Measured value scanning device lies in the elimination of a photocell. Another benefit lies in that it is because the displacement of the organs of touch for the higher units depends on the position of the Touch organs of the lower units is dependent, a practical independence of the relative position of the Sensing features and the tactile organs for the higher units is achieved.

In the following the invention on the basis of an exemplary embodiment explained in more detail.

Fig. 1 shows a scale head seen from the rear;

F i g. Figure 2 shows the scale head in side view; Fig. 3 shows a circuit diagram for the registration device;

Fig. 4 shows a circuit diagram for an ordinary one Adding machine;

ίο Fig. 5 shows the attachment of the pressure magnets on the adding machine.

It is assumed that the capacity of the scale shown z. B. 100 kg. A scale or Pointer ring 1 (Fi g. 2), which is attached to a hood 2, is accordingly divided into 100 g up to 100 kg. A pointer 3, which is attached to the rotatable shaft 4, stands up according to the weight the balance bridge, not shown.

At the other end of the shaft 4, a scanning disc 5 is attached, which is provided with holes 6. The division of the holes 6 is equal to the 100 g division on the pointer ring 1. The holes 6 are for scanning the smallest weight units, here 100 g, arranged. For scanning the next higher weight units, i.e. one kilogram each, are on the disc 5 elevations 7, z. B. in the form of cylindrical pins arranged. The number of these Pins corresponds to the number of the next higher weight units, i.e. i.e., there is one for every kilogram Pin 7 arranged.

Elevations 8 are provided on the disk 5 for scanning 10 kg units. The number of these-, these Raises 8 corresponds to the number of 10 kg modular units. These ridges, the curved ones Can be rails, each occupy a slightly smaller angle than a 10 kg division unit. Opposite to the disk 5 is a displaceable pin holder 9 is arranged so that the pins 10 of the holder 9 can come into contact or engagement with the holes 6 of the disc. According to Art a vernier in relation to the holes 6 in the disc 5. When the holder 9 is advanced against the One or two pins come into engagement with the holes 6.

The holder 9 is displaced by a magnet AM, the armature of which is connected to the holder 9. When the magnet AM receives current, the armature of the magnet drives the holder 9 against the scanning disc 5 and at the same time tensions a spring (not shown). When the magnet AM falls, the spring pulls the holder back into its starting position.

The pins 10 interact with a pair of contact springs 11 each. The contact springs 11 for the Pins 10 are usually closed. But if the holder 9 is pushed against the disc 5, will all contacts, the pins 10 of which do not enter holes in the disk, are open.

The elevations 7 and the rails 8 are scanned by pins 12 and 13, respectively, to determine the number of kg and 10 kg weights, respectively. The pins 12, 13 are mounted in a holder 14 which is horizontally displaceable in a holder 15 which is pivotably mounted about the same center point as the disk 5 and to which an angular displacement can be conveyed by a magnet BM. The size of this angular displacement is limited by one of the magnets Ml to M 9 such that the armature of one of the magnets with one of the recesses 16 a

5 6

(or elevations) fastened in one on the holder 15 when the contact arms reach the zero position, whereby th segment 16 comes into engagement. These magnets the voter comes to a standstill
correspond to a 10 pen in the decimal pen holder. Those magnets that are on the keys of the If z. B. the decimal digit 5 is scanned, the adder will give a pressure pulse, the magnet M 5 and its armature are energized and form 5 is most conveniently placed directly above the buttons of a lock for the movement of the segment 16 and keys (Fig. 4 and 5).
thus for the movement of the holder 15. As shown in The operation is as follows: Zero position, ie, the Fig. 1 can be seen, these recesses 16ö balance bridge is unloaded. The registration should show and thus also the movement of the segment from 0. The main switch Br is switched on, increasing in size, so that the holder 15 by io. When the starter button Si is pressed, this shift is received with each registration in die- lais HR current on the way: +, contact Sf, bracket position relative to disc 5 , independent of the clock , relay HR, - . When HR is energized, decimal numbers, which are brought into being, are preferably closed into Hr ₁ and HR _% . Hr ₁ is the self-holding contact position, which he uses when scanning whole kilograms for the relay HR. Above hr ₂ , the magnet receives AM grams, that is, when the decimal number 0 is used. One 15 stream. The magnet AM is energized and pushes the pins 12 of the holder 14 so with each pin holder 9 against the scanning disc 5. From the scanning of one of the elevations 7 opposite located decimal pins 10 of the pen holder 9 comes the NuIlden, so that only the digit a unit scanned pin in engagement with the corresponding hole 6 of the can be. Scanning disk 5, and the contact 11 on the zero pin

The angular distance from the end of a rail 8 to 20 remains closed. The other pens are on the

The beginning of the next rail is the same as the kg-part scanning disc and the corresponding contacts 11

lung. A rail starts z. B. at 10.0 kg and are opened. The relay NR receives power

ends at 19.0 kg. The next rail begins z. B. the way: +, whose arm Im ₁ , whose zero contact,

at 20.0 kg and ends at 29.0 kg, etc. When leaving the + line to contact 11 of the zero pin,

buttons z. B. of 19.9 kg, the holder 15 and thus 25 is the line for digit 0, the relay NR, -. if

the holder 14 by nine tenths of a division (as soon as the relay NR is energized, its contact breaks

of the kg division unit), so that they are nr ₂ the circuit for the magnet BM, because at

occupy the same position as when scanning by scanning the decimal digit 0 of the holder 15 in the

19.0 kg, with reference to the washer. This causes the zero position to remain. The contact nr _x closes the current

that only a number of tens can be scanned. 30 circle to the magnet CM, which is excited and the

The displacement of the holder 14 with the pins pushes the pin holder 14 against the scanning disc 5. Of the

12 and 13 are carried out by the magnet CM, whose unit pin 12 (zero pin) now closes its contact armature and is connected to the holder 14. When the 17, and the tens pin 13 (zero pin) closes its magnet CM receives current, the armature of the contact 18 pushes. Via the contact cm , the Kon magnet receives the holder 14 against the scanning disc 5 35 clock selector LM current and brings its contact arms and simultaneously tensions a spring (not shown), Im ₁ and Im ₂ forward. When the magnet CM is de-energized, the contact arm Im ₁ returns the holder one after the other to the starting position via the fixed contacts. The pens 12 and "Hundreds", "Tens", "One", "Decimal"

13 act with the corresponding contact spring pair and "release" current is supplied.

17 and 18 respectively, which are usually open. 40 The arm Im ₂ closes the negative line to the In certain positions of the disk 5, two are added. If the arm Zm _{1 of} the selector closes successive decimal pins through holes in the "Hundreds" contact, the line can enter the disk when the magnet AM is excited. So that Ll does not receive power to the adding machine, since only one of the lines not connected to the contacts of these pins of the hundred pins on its scanning rail 8 has a pulse after 45 (see FIG. 1) and thus the corresponding Kon adding machine Od. Like. Transmits, the magnets are clock 18 is open. If the arm Im _{1 of} the selector closes the NR, Ml to M 9 with normally closed contact "Zehner", the circuit is provided via: clock nr ₀ , ml to m9 (Fig. 3), which at +, the arm In the ₁ , the contact "tens", the + - unfortunately excitation of the relevant magnet is opened to the contact 18 (zero pin), the line LO den and which with an offset from a 50 to the magnet D0 of the adding machine, the - -Lei step in the lines from the decimal points to tung, the arm Im ₂ , -, closed. The magnet DO the relevant magnet are inserted. When the adder is energized and depressed the two of these lines, e.g. B. for numbers 3 and 4, zero key in the adding machine.
Voltage received, only the first of these, when the arm in _one of the voter contact lines corresponding magnet 55 "includes one" in this example, the circuit is over: +, which the magnet M _3, energized and allows a Impulse AHnZm ₁ , the contact "one", reaches the + line to magnet D 3 of the adding machine. the contact 17 (zero pin), the line LO to the The contact selector LM is of the known type magnet DO of the adding machine, the - line, and can, for example, similar to a caller with the arm Im ₂ , -, closed. The magnet D 0 in the exchange stations run by telegraph offices 60 adding machine is excited and presses the zero key. The advance from contact to contact takes place in the adding machine,
(not shown) with the aid of a magnet, the at When the arm ₁ of the selector contact current circuit (or circuit breaker) gradually "decimal" closes the circuit, the sample arms via the armature and a pinion is closed on: +, the ArTnZm ₁ , advances the contact »decimals«. For each registration 65, the voter makes the + line to contact 11 (zero pin), which goes one round. The contact A ₁ is a self-sub-line L 0 to the magnet D 0 of the adding machine, breaking contact and causes the step-by-step forward line, the arm Im ₂ , -. The magnet DO in thrust. The contact Jc ₂ interrupts the circuit, the adding machine is energized and pushes the zero

feel down. When the ArDiZm _{1 of} the selector closes the contact »release«, the circuit is closed via: +, the arm Zm ₁ , the contact »release«, the line to the magnet »release« of the adding machine, the —line, the arm Im ₂ , -. The "release" magnet is energized and the adding machine registers the number 00.0.

When the arm Im ₁ assumes the "release" position, the circuit is closed at the same time via: +, the ATmZm ₁ , the contact "release", the relay OR, - . The relay OR is energized and opens the contact or, whereby the relay HR is de-energized and the contacts Ar ₁ and hr ₂ opens and the entire system is de-energized. The registration is finished and a new registration can begin because the ATmZm _{1 of} the voter is in the initial position zero contact. '

Is the weight e.g. B. 47.5 kg, the pointer has taken a position that is 47.5 kg on the pointer board shows. The scanning disc 5 has also assumed the same position. At the beginning of the scan, when the pen holder 9 has been moved against the window, the registration process is as follows:

Decimal: The fifth decimal pin is in engagement with a hole 6. The corresponding spring contact of this pin is closed, and the current passes through: +, the arm Im ₁ , the zero contact, the + line to the contact 11, the line for digit 5, the magnet M ₅ , - . The magnet M ₅ is excited, and its armature is now a lock for the movement of the segment 16. The magnet BM receives current via the contact on and is excited, the segment 16 and with this the holder 15 against the lock, which represents the armature of the magnet M ₅ , is moved. When BM is excited, the contact is closed, via which the magnet CM receives current and is excited, with the holder 14 being pushed against the scanning disc 5. One: The seventh pin is on the follower pin 7 of the disk 5, and the corresponding contact 17 is closed. Tens: The fourth pin 13 is on the corresponding scanning rail 8 of the disk 5, and the corresponding contact 18 is closed.

The contact selector LM receives power over cm and scans: The contact "Hundred", but the hundred pin is not on its scanning rail. The corresponding contact 18 is thus open and no closed circuit is obtained.

The contact "tens": +, the arm Im ₁ , the contact "tens", the + line to the pin for digit 4, the contact 18, the line L 4 to the magnet 4 of the adding machine, the - line, the Arm Im ₂ , -. The magnet D 4 is energized and depresses the key for digit 4 in the adding machine.

The contact "one": +, the arm Im ₁ , the contact "one", the H - line to the contact 17 of the pin for digit 7, the line to the magnet D 7 of the adding machine, the - line, the arm Im ₂ , -. The magnet D 7 is energized and depresses the key for digit 7 in the adding machine.

The contact "decimal": +, the arm Im ₁ , the contact "decimal", the + line to the contact 11 of the pin for number 5, the line L 5 to the magnet D 5 of the adding machine, the line, the Arm cm ₂ , -. The magnet 5 is energized and depresses the key for digit 5 in the adding machine.

The »Trigger« contact: As previously described. The result of the registration: 47.5 kg.

Instead of, as in the embodiment described, the holder 15, and thus the holder 14, in the same To store the center point like the disk 5, the holder 15 can be stored firmly. The holder 9 is then movably supported around the center of the disc 5, and the segment 16 is mounted on the holder 9 attached. When the pins 10 of the holder 9 have come into engagement with the washer 5, the holder 9 and thus the disk 5, which is now in engagement with the holder by the pins 10, in the same way Displaced manner as the holder 15 was previously displaced, although the movement in the opposite direction Direction takes place. After that, the keeper. 14 moved against the disc 5 in the same way as before.

Scanning and registration are then carried out in the same way as previously described.

Instead of causing the displacement by a magnet BM and limiting the displacement by the magnets Ml to M9 , it is also possible to omit the magnet BM and to actuate the segment 16 or a corresponding member by the magnets Ml to M9 so that these magnets themselves carry out the displacement in the above-mentioned manner.

Claims (6)

Patent claims: 1. Measured value scanning device on measuring devices, in particular scales, with members for scanning the setting of a feature carrier which is set according to the measured value to be determined, for example a disk, with the lower and higher units (ones, tens, hundreds, etc.) assigned scanning features, in which by the sensing means electrical circuits for the actuation of switching devices controlling display or registration devices are selected and set up, with the sensing elements for the higher units in the direction of the adjustment movement of the sensing marks which interact with them and which, if necessary, are dimensioned shorter in their direction of movement than a division unit for the unit in question are arranged displaceably relative to these, characterized in that, in order to avoid ambiguous scanning, one or more of the scanning elements (12, 13) for the higher units along the measuring graduation of the measured value to be determined adjusting feature carrier (5) are arranged displaceably by magnetic force in a known manner and that, depending on the respective scanning positions of the sensing elements (10) for the lower units, excitable magnets (Ml to M9) are arranged, by their excitation devices for limiting the adjustment path of the part (14, 15) carrying the touch organs for the higher units are brought into effect in such a way that when the features are scanned, the relative position of the scanning features and the touch organs (12, 13) for the higher units depends on the number of the lower units is practically independent. 2. Apparatus according to claim 1, characterized in that the sensing elements (10) for the lowest unit are arranged in a holder (9) which is displaceable by a magnet (AM) towards the feature carrier, and that this Touch organs with one of the magnets (Ml to M 9) are electrically coupled. 3. Apparatus according to claim 1 and 2, characterized in that the sensing elements (12, 13) for the higher units are arranged in a holder (14) which is horizontally movable in a holder (15), which latter is pivotable about the same center like that of the feature carrier, the disk (5), is mounted and an angular displacement can be conveyed to it by a magnet (BM). 4. Apparatus according to claim 3, characterized by a segment attached to the holder (15) (16) with recesses (16 a) or elevations that connect with the anchors of the magnets (Ml to M9) cooperate to limit the angular displacement. IO 5. Apparatus according to claim 3 and 4, with the modification that the holder (15) is fixedly mounted is, the holder (9) is movably arranged around the center of the disc (5) and the segment (16) is attached to the holder (9), the magnet (BM) in turn generating the angular displacement. 6. Apparatus according to claim 4, with the modification that, omitting the magnet (BM), the magnets (Ml to M 9) act ίο the angular displacement on the segment (16) produce. Considered publications:
German patents No. 618 399, 675 842,
939 898, 941 323; French Patent No. 1,044,821;
Swedish patent specification No. 121 647. 1 sheet of drawings