Abstract:
Apparatus responsive to the movement of a ferromagnetic member comprises a rotor rotatable by the movement of the member, permanent magnets for magnetically attracting the member into contact with the rotor and a photoelectric digitiser for generating a pulse train in dependence upon the rotation of the rotor by the member.
Abstract:
There is described a mounting for a frictionally driven distance measuring metering wheel which provides adjustment for the tracking engagement as well as the angle of contact between the metering wheel and the measurement surface along which the wheel rolls in use. A frame plate is part of the housing structure for the metering wheel and a mounting plate is movable along the measurement surface. The frame plate has a planar surface which contacts a pair of curved support surfaces projecting above the mounting plate. The curved support surfaces contact the frame plate along a line perpendicular to the axis of rotation of the metering wheel and closely adjacent the plane of the metering wheel. The frame plate is tiltable about these support surfaces and also slidable transversely on the surfaces to provide positioning adjustment for the metering wheel.
Abstract:
At least one light beam is directed across a continuously moving conveyor toward a light sensitive device arranged on the opposite side of the conveyor, and circuitry is provided in association with the light sensitive device to provide a ''''diameter'''' pulse proportional in real time to the width or diameter of the article passing along the conveyor. A pulse generator provides a train of pulses proportional in frequency to the speed of the conveyor and hence to the speed of the articles moving thereon. NAND gate means clips the train of pulses providing a series of pulses with a total time span corresponding to the real time duration of the ''''diameter'''' pulse. A counter receives these pulses, and has preset minimum and maximum values, which values when exceeded will generate ''''yes'''' and ''''no'''' pulses to logic circuitry for operation of a reject device downstream of the light beam for removing an article from the line when it does not meet predetermined standards.
Abstract:
Apparatus for determining the length of portions cut from stock material characterised by a stock pulse generator 15 responsive to the movement of the stock past a cutting device 10 to provide a stock pulse train, the repetition rate of which is related to the speed of advance of the stock; a cutter pulse generator 17 responsive to the cutting device for producing a cutter pulse train, the repetition rate of which is related to the frequency of cutting operations of the cutting device, a counter 40 for counting the pulses produced by the stock pulse generator; means 38 for starting the counter in response to a cutter pulse and for stopping the counter after a predetermined further number of cutter pulses have been generated, whereby the number of stock pulses then recorded by the counter is representative of the length of the last n portions cut from the stock, n a predetermined integer in excess of one.
Abstract:
A measuring apparatus of total yarn length wound in package form on a yarn winder including an electric circuit for prescribedly delaying emission of pulses, which correspond to each cycle rotation of a yarn traversing drum rotationally carrying a growing package in contact thereon for winding rotation or its drive motor, to a counter part of the emitted pulses from starting of winding operation.
Abstract:
The present invention relates to an electronic digital measuring system for measuring and displaying the length a member extends beyond a measuring point, and, more particularly, to an electronic digital measuring system which makes coarse and fine measurements by a pair of independent measuring units of the distance a member being measuring extends beyond a measurement point and additionally combines and displays the combined measurements.
Abstract:
Apparatus for measuring the dimensions of objects including elongated light sources within a measuring zone with the opposite ends of each of the light sources being arranged over each of the edge portions of a sheet of web material to be measured. The light sources are positioned adjacent one side of the web material in a non-contact relationship such that the lengthwise direction of the light sources is positioned so as to coincide with the widthwise direction of the web. A pair of photoelectric transducers are provided adjacent the opposite side of the web in a non-contact relationship therewith such that the transducers are permitted to move along the lengthwise direction of the light sources when measuring the width of the web. A pair of magnetic reproducing heads are provided to move simultaneously with the photoelectric transducers when the web is being measured. A pair of magnetic scale members are provided and extend for a distance which corresponds to the length of movement of the magnetic reproducing heads. A pair of first registers are provided for counting during the period of time that the light beams emanating from the light sources are interrupted by the web whose width is being measured. The registers, when in operation, will count a plurality of marks which are magnetically recorded on the magnetic scale members as the magnetic reproducing heads move therealong. A second register is provided for counting an algebraic sum of reference pulses representing a predetermined width of web material and both pulses emanated from the pair of first registers.
Abstract:
IN ACCORDANCE WITH AN ILLUSTRATIVE EMBODIMENT OF THE INVENTION, METHODS AND APPARATUS FOR ACCURATELY DETERMINING THE TRUE DEPTH OF A TOOL SUPPORTED IN A BOREHOLE BY AN ELASTIC CABLE ARE DESCRIBED. TO ACCOMPLISH THIS, A SHEAVE WHEEL AT THE SURFACE OF THE EARTH MEASURES CABLE MOVEMENT AND GENERATES PULSES REPRESENTATIVE OF INCREMENTAL CABLE MOVEMENT. THE TENSION ON THE CABLE AT THE SURFACE OF THE EARTH IS MEASURED AND USED IN COMBINATION WITH CERTAIN CALIBRATIOIN CORRECTIONS TO GENERATE CORRECTION PULSES WHICH ARE EITHER ADDED TO OR SUBTRACTED FROM THE INCREMENTAL CABLE MOVEMENT PULSES TO PRODUCE CORRECTED CABLE MOVEMENT PULSES. THESE CORRECTED PULSES CAN THEN BE USED TO DRIVE A SUITABLE RECORDING DEVICE AS A FUNCTION OF TRUE CABLE MOVEMENT OR TO CAUSE REFERENCE MARKS TO BE PLACED ON THE CABLE SO THAT THE CABLE CAN BE LATTER USED FOR DEPTH CONTROL PURPOSES APART FROM THE PULSE CORRECTION COMPUTING SYSTEM.
Abstract:
The indicator of this invention measures the amount of a web material wound upon a spool by utilizing the principle that the rate at which the spool rotates, as the web is wound or unwound therefrom, varies in proportion to the amount of the web material thereon. A pulse generator is provided for generating pulses which indicate the rotational velocity of the spool and a second pulse generator is provided for generating pulses which indicate the linear velocity of the web material. A counter counts the number of pulses generated by the linear web motion during each pulse generated by the rotating spool. The accumulated count is then stored and displayed for indicating the amount of the web material upon the spool.