Control devices

Claim 2

A sensor device comprising at least one energy delivery element, an array of energy receiver elements spaced from the energy delivery element, and a control element adapted to be passed between the energy delivery element and the energy receiver elements, the control element being apertured at intervals to permit passage of energy from the energy delivery element to selected ones of the energy receiver elements during passage of the control element therebetween, the spacing between the energy receiver elements of said array being different by a fractional amount from the spacing between the apertures of said control element whereby, during passage of the control element, sequential registration occurs between successive ones of the apertures in the control element and successive ones of the energy receiver elements, said energy delivery element being connectable to a supply of an energy transmission medium, and an energy transmission medium is passed from the energy delivery element through the apertures In the control element to selected ones of the energy receiver elements, wherein the energy receiver elements are uniformly spaced apart and arranged in a longitudinal row, and the apertures in the control element are uniformly spaced apart and arranged in a row alignable with the row of energy receiver elements for said cooperation therewith.

Claim 3

A sensor device comprising at least one energy delivery element, an array of energy receiver elements spaced from the energy delivery element, and a control element adapted to be passed between the energy delivery element and the energy receiver elements, the control element being apertured at intervals to permit passage of energy from the energy delivery element to selected ones of the energy receiver elements during passage of the control element therebetween, the spacing between the energy receiver elements of said array being different by a fractional amount from the spacing between the apertures of said control element whereby, during passage of the control element, sequential registration occurs between successive ones of the apertures in the control element and successive ones of the energy receiver elements, said energy delivery element being connectable to a supply of pressurized fluid medium, and a fluid medium is passed from the energy delivery element through the apertures in the control element to selected ones of the energy receiver elements, wherein the control element comprises at least two transversely spaced-apart longitudinal rows of apertures, and the energy receiver elements consist in at least two said elements being transversely aligned and arranged for cooperation with the respective rows in the control element, each of the apertures in one of the rows being arranged to lie between adjacent successive ones of apertures in the other row.

Claim 4

A sensor device comprising at least one energy delivery element, an array of energy receiver elements spaced from the energy delivery element, and a control element adapted to be passed between the energy delivery element and the energy receiver elements, the control element being apertured at intervals to permit passage of energy from the energy delivery element to selected ones of the energy receiver elements during passage of the control element therebetween, the spacing between the energy receiver elements of said array being different by a fractional amount from the spacing between the apertures of said control element whereby, during passage of the control element, sequential registration occurs between successive ones of the apertures in the control element and successive ones of the energy receiver elements, said energy delivery element being connectable to a supply of pressurized fluid medium, and a fluid medium is passed from the energy delivery element through the apertures in the control element to selected ones of the energy receiver elements, wherein the control element comprises at least two transversely spaced-apart longitudinal rows of apertures, and the energy receiver elements consist in at least two said elements being transversely aligned and arranged for cooperation with the respective rows in the control element, each of the apertures in one of the rows being arranged to lie between adjacent successive ones of apertures in the other row.

Claim 5

A device as claimed in claim 1 wherein the spacings between the energy receiver elements are 9/100th of a unit and the spacings between the apertures are 1/10th of a unit.

Claim 6

A device as claimed in claim 1, wherein the control element is in the form of a punched tape.

Claim 7

A device as claimed in claim 2, wherein the control element is in the form of an apertured disc which is rotatable about an axis substantially at right angles to a plane containing the energy receiver elements.

Claim 8

A device as claimed in claim 1 including, additionally, means for discriminating between a true registration and a false registration of two or more said energy receiver elements and associated said apertures in said control element.

Claim 9

A device as claimed in claim 6 wherein the discriminating means includes a subsidiary energy receiver element, and includes also a row of spaced-apart subsidiary apertures in the control element, the subsidiary apertures being alignable with said subsidiary energy receiver element during relative passage of the control element.

Claim 10

A device as claimed in claim 1 wherein the energy delivery element is connectible to a supply of pressurised fluid medium and a fluid medium is passed from the energy delivery element through the apertures in the control element to selected ones of the energy receiver elements.

Claim 11

A device as claimed in claim 1 wherein the number of energy delivery elements is equal to the number of energy receiver elements, each energy delivery element being axially aligned with one of the energy receiver elements.