Composite mixture batching

Claim 2

A method as claimed in claim 1 for proportioning a batch which in addition to the three components comprises a further group of components which are desired to be mixed in the batch in mutual predetermined proportions as well as in a predetermined ratiO relative to the entire amount of the mixture, comprising the steps of first proportioning the components of said second group in predetermined ratio by percent by dividing an analogue value which represents a unit measure into desired proportion between the components of said second group, thereafter adjusting said analogue value which represents said second group to such a ratio to the analogue value which determines the entire amount of the batch which corresponds to the desired proportion between the total amount of the components of said second group and the entire batch amount, and after adjustment of the analogue values of said first, second and third component in accordance with the desired physical properties, using all the analogue values for proportioning the batch.

Claim 3

A method as claimed in claim 3, in which the dispensing of the components is controlled by producing by means of a dispensing device, an analogue value which increases as the dispensing proceeds, comparing the analogue value produced by the dispensing device with the analogue value which is derived from the analogue computing device and is indicative of the amount of the component to be dispensed, and interrupting the dispensing when the analogue value produced by the dispensing device has been increased to the value of the other analogue.

Claim 4

A method as claimed in claim 4, in which a third analogue value is produced which is near to but smaller than the analogue value which is indicative of the amount of the component to be dispensed, and in which the analogue value produced by the dispensing device is first compared with said third analogue value and upon becoming equal therewith, the dispensing device is controlled to decrease the rate of dispensing.

Claim 6

A method as claimed in claim 6, in which the gravel contains an amount of water, comprising the steps of measuring the water contents in the gravel and using an analogue computing device which when operatively connected with the means for producing analogue values corresponding to water and gravel includes a correction device and adjusting said correction device to decrease the analogue value which corresponds to water with that amount of water which is included in the gravel.

Claim 7

A method as claimed in claim 6, for proportioning concrete which in addition to cement, water and gravel comprises a skeleton having a different modulus aggregate to be used with desired ratio between the different modulus aggregates and with a desired ratio between the total aggregates and the total amount of the mixture, comprising the steps of dividing an analogue value which represents a unit amount into portions which represent each of the modulus aggregates by percent, adjusting said analogue value to a desired ratio relatively to the analogue value which represents the entire amount of the mixture to the desired raTio between the amount of skeleton and the total amount of the mixture and after having divided the remaining amount of the analogue value into portions which correspond to analogue values of cement, water and sand to give the desired physical properties using all the analogue values for proportioning the mixture.

Claim 8

A method as claimed in claim 6, in which the dispensing of the components is controlled by producing, by means of the dispensing device, an analogue value which increases as the dispensing proceeds, comparing the analogue value produced by the dispensing device with the analogue value which is derived from the analogue computing device and is indicative of the amount of the component to be dispensed, and interrupting the dispensing when the analogue value produced by the dispensing device has been increased to the value of the other analogue.

Claim 9

A method as claimed in claim 9, in which a third analogue value is produced which is a fraction smaller than the analogue value which is indicative of the amount of the component to be dispensed, and in which the analogue value produced by the dispensing device is first compared with said second analogue value and upon becoming equal therewith, the dispensing device is controlled to decrease the rate of dispensing.

Claim 10

An analogue computing device for proportioning a plurality of components of a batch mixture, comprising at least a first, a second and a third component, and in which mixture a first physical property is determined by the ratio between the first and the second component and a second physical property determined by the amount of the second component, comprising means for producing an analogue value which corresponds to the entire amount of the batch, means for dividing said total analogue value into a first fraction which represents the analogue value of the sum of the two components, the ratio between which determines the first physical property and a second fraction which corresponds to the analogue value of the third component, means for dividing said first analogue fraction into two portions, each being indicative of the analogue values of the two components, means for indicating the proportion between said two analogue values, and means for indicating the one of the numerical values of the two components, the amount of which determines the second physical property of the mixture.

Claim 11

Apparatus as claimed in claim 11 having for each group of three components three reciprocal rulers movable perpendicular to the direction of each of three sides of a hypothetical or physical equilateral triangle, the height of which corresponds to the anologue value of the entire amount of that portion of a batch which is going to be mixed by the three components in question and about one corner of which an arm is pivotally mounted with an abutment which is displaceable in the longitudinal direction of the geometrical line of the arm for engagement with the interior ends of the rulers, and in which the rulers are calibrated to indicate the distance of each ruler from the end which engages the abutment to the side of the triangle.

Claim 12

Apparatus as claimed in claim 12, in which the rulers directly or indirectly are connected with control means for automatic control of the dispensing of the individual components in accordance with the reading of the rulers.

Claim 13

Apparatus as claimed in claim 13, in which the rulers are connected with electrical potential generators operable to control said generators to produce electrical potentials analogue with the readings on the rulers, and operable to control the dispensing of the components.

Claim 14

Apparatus as claimed in claim 12, in which an indicator device is provided in connection with the pivotable arm, and is operable to indicate the ratio between the readings of those two rulers which are movable perpendicular to the two sides of the triangle which intersect at the pivot of the arm.

Claim 15

Apparatus as claimed in claim 15, in which the bottom line of the triangle opposite thE pivot point of the arm is displaceable in a direction perpendicular to the height of the triangle, and that the height of the triangle is readable on a scale.

Claim 16

Apparatus as claimed in claim 16, for proportioning of concrete, in which the scales of the two rulers which are movable perpendicular to the two sides of the triangle which intersect the pivot point of the arm are calibrated corresponding to the amounts of water and cement, and that the third ruler is calibrated corresponding to gravel.

Claim 17

Apparatus as claimed in claim 17, for proportioning a mixture having a plurality of further components which in a second group must be mixed in a desired ratio having a further group of three rulers for each group of components movable relative to the sides of a further triangle having one line parallel with the bottom line of the triangle of the first group of components opposite the point of intersection about which the pivotable arm is mounted.

Claim 18

Apparatus as claimed in claim 18, in which the distance between the two triangles is variable and readable on a scale.

Claim 19

Apparatus as claimed in claim 19, in which one triangle corresponds to the components water, cement and gravel in concrete and the rulers in the other triangle correspond to a different size of skeleton, and that the distance between the two triangles corresponds to entrained air.

Claim 20

Apparatus as claimed in claim 11, having an electrical voltage source, means for producing therefrom a voltage which is the analogue value of a predetermined amount of a batch, a first voltage divider operable to divide said analogue voltage into a first portion which is the analogue value of the sum of the two components, the ratio between which determines the first physical property of the mixture, and a second portion which is the analogue value of the third component of the mixture, a second voltage divider operable to divide said first portion into two mutually adjustable portions each corresponding to an analogue value of each of the two components, the ratio between which determines the said first physical property, means for indicating the ratio between said last mentioned analogue values and means for indicating the amount of the analogue value of that one of said two components which determines the second physical property.

Claim 21

Apparatus as claimed in claim 21, for use with proportioning the components of concrete in which the first voltage divider is adapted to produce an analogue value which corresponds to the sum of water and cement and an analogue value which corresponds to gravel and the second voltage divider is adapted to divide the first analogue value into portions which represent the analogue values of cement and water, respectively.

Claim 22

Apparatus as claimed in claim 22 for proportioning concrete having cement, water and gravel, and skeleton comprising different sizes of stone as well as entrained air, having a first voltage divider operable to divide an analogue voltage, which corresponds to the analogue amount of a unisize batch, into a first portion which comprises the mortar and a second portion which comprises the skeleton, means operable to indicate the amount of skeleton in percent of the entire batch, means operable to divide the analogue portion which corresponds to skeleton into fractions, each of which corresponds to a different size of stone in the skeleton, means operable to indicate the analogue values of each of the sizes of stone in the skeleton in percent of the entire amount of skeleton, a further voltage divider operable to divide the entire batch analogue value into a first portion corresponding to the amount of entrained air and a second portion which corresponds to the remaining part of the batch, means operable to indicate the amount of entrained air in percent, means operable to divide the remaining portion of the entire batch which corresponds to mortar into a first portion which corresponds to the amount of gravel and a second portion which corresponds to the sum of waTer and cement, a voltage divider for dividing the last portion into towo portions corresponding to water and cement respectively, means operable to indicate the ratio between water and cement and/or the strength of the concrete, and means operable to indicate the amount of water and/or the slump.

Claim 23

Apparatus as claimed in claim 23, in which switch means is provided operable to apply the voltage corresponding to the analogue value of the entire batch directly to the voltage divider system which represents the skeleton, thereby enabling the porportion between the skeleton components to be adjusted in percent.

Claim 24

Apparatus as claimed in claim 24 in combination with a dispensing device having means operable to produce an analogue value which increases as the dispensing proceeds, a differential operatively connected with teh analogue output which is indicative of the amount of the components to be dispensed as well as with the analogue value produced by the dispensing device, said differential being operable to produce a signal when said analogue value produced by the dispensing device has been increased to the value of the other analogue, and control means operable by said signal for interrupting the dispensing.

Claim 25

Apparatus as claimed in claim 25 having means operable to produce an analogue value which is slightly less than the analogue value which indicates the amount of the components to be dispensed, an auxiliary differential device operable to compare said analogue value with the analogue value produced by the dispensing device and being able to produce a signal, and control means operable to reduce the rate of dispensing in response to said signal.

Claim 26

Apparatus as claimed in claim 26 comprising an amplification device operatively connected with the analogue value produced by the dispensing device to control the analogue value produced by the dispensing device in proportion to the ratio between the unit amount of batch as used in the computing device and the actual amount of batch to be dispensed.