Abstract: A control system for controlling the operation of cyclically moving components, in particular the shears of a glassware forming machine. The control system incorporates sensors which produce signals representative of predetermined shear positions in each shear cycle. The signals provide feedback to control circuitry and are processed to control the operation of the shears in response to the sensor signals.

Abstract: A digital depth indicator for rotary earth drills, and particularly auger type drills, operates from the means used to lower and raise the drill. The indicator operates from either the wire or cable of a wire line hoist auger or the hydraulic fluid flow in a hydraulic Kelly hoist type machine. A rotary measuring device is provided with an incremental shaft encoder which rotates to produce a dual signal which is supplied to (1) an up/down digital counter and (2) a programmable .div.N counter, which counter supplies a .div.N pulse to the up/down digital counter. The programmable .div.N counter is provided with switches for (1) setting the apparatus to read in feet or in meters and (2) setting the program for the drilling machine type or model. The output from the up/down digital counter is fed through a display driver to a digital display showing the indicated depth in feet or meters.

Abstract: An apparatus is disclosed, for measuring the angular position of a shaft of a machine at the occurrence of an event originating from the operation of the machine, relative to a reference position of the shaft. The apparatus comprises a first sensor responsive to the reference position of the shaft (signal II) and a second sensor which, on the occurrence of the event, produces an output pulse and which produces a number of interference pulses in the periods between production of the output pulses (signal I). A comparator (4) having a threshold value which is capable of being exceeded both by the required pulses and the interference pulses, and a recognition circuit (3,6) which is adapted to recognize output pulses produced on the occurrence of the event, are arranged to control an evaluation circuit such as a counter (10). The evaluation circuit ascertains, e.g.

Abstract: A digital system for measuring an input quantity includes an input mechanism for providing a first input in response to an input quantity to be measured, a stepper motor for providing a second input, a measuring apparatus connected to the input mechanism and to the stepper motor such that the measuring apparatus provides an output when the first and second inputs reach a predetermined relationship, and a circuit connected to the stepper motor and to the measuring apparatus for stepping the stepper motor from a reference position and for counting the steps of the stepper motor until the measuring apparatus provides the output.

Abstract: A sequence of or controls pulse-transfer stages supplies or controls pulses between a start limit and a stop limit in the sequence. The device whose position is to be encoded selects and controls a responsive means in a limiting stage. Each stage has a pulse-control device responsive to the selector or in itself incorporates the selector-responsive pulse-control function, being arranged to serve in different embodiments as a start limit or as a stop limit. In one example, the start limit is the initial stage of the sequence and the selected stage is the stop limit. In an alternative, the selected stage is the start limit and a pulse-transfer stage at or near the end of the sequence is the stop limit. An encoding counter counts pulses between the start and stop limits. The pulse-control devices have a prescribed physical arrangement, which is a circle in the case of a shaft position encoder, so that the counter provides a code that represents the position of a shaft.

Abstract: Method for correcting the control program of an automatic glass cutting machine including the steps of adding in counters signal pulses representative of travel of a scanning head in X and Y directions, checking the counter totals at the starting and end points of travel of the scanning head and introducing pulses in the program to bring the counter totals to a zero value.A device for correcting the control program of an automatic glass cutting machine having counters for adding signal pulses representative of travel of a scanning head in X and Y directions and a pulse generator for each counter which may put a required number of pulses into memory to bring the total count in the counters to zero at the completion of travel of the scanning head.

Abstract: Input pulses generated by rotation of a knitting machine are used to produce output pulses that energize needle selection mechanisms therein. A control system operates in such a fashion as to advance the output pulses with respect to the input pulses, while keeping pulse frequency constant. The control system is clocked, and a forward counter is programmed with a number which is dependent upon knitting machine speed, and which number is derived from the number of clock pulses intervening between subsequent input pulses. After the forward counter has been so programmed, it is clocked by the clock until the appropriate number of clock pulses has been counted. At that time, a pulse is generated by reverse counter and a monostable multivibrator, which is used to produce an output pulse according to a program stored in a PROM. Provision is made to bypass the counter when the knitting machine is operated at low speeds.

Abstract: An electronic trip meter for an automotive vehicle comprises a memory circuit to store sector distances between a start point and intermediate and final destinations, a distance presetting circuit to determine alarm points near to and before intermediate and final destinations, a counter to count the actual distance travelled from the last destination, a comparator to output a signal from the time when the value in the counter becomes equal to that in the distance presetting circuit until the time when the value in the counter becomes equal to that in the memory circuit, an alarm device driven by the comparator output signal, and a display device. Such an electronic trip meter displays the remaining distance to the next destination while the comparator is sending out an output signal; that is, at any intermediate points in between an alarm-point and the next destination. At other times the display shows a value representative of the total distance travelled.