A multi-monitor is provided with a first display device having a display screen and a second display device having a display screen smaller than the display screen of the first display device, and a supporting mechanism which is mountable on an outside portion of the first display device, and supports the second display device rotatably about a first axis and a second axis intersecting the first axis. The first second display device is driven in accordance with the same operation system as the f...

A monitor for spaced parallel strands which are conveyed in a direction perpendicular to the longitudinal axes of the strands. The monitor includes a stationary switch which has a switch arm to which is attached a shoe which spans at least two adjacent strands and bears against said strands as they pass by the shoe in which case the switch arm will be in a detecting position and will move to an indicating position when a broken or slack strand passes by said shoe.

Apparatus for monitoring the operation of servosystems. The apparatus includes a dynamic monitor for providing a failure signal in accordance with the comparison between the rate of change of the servo displacement feedback signal and the servo rate feedback signal. The apparatus also includes a polarity monitor for providing a failure indication whenever the servo rate feedback signal is not of the proper polarity so that the servo displacement error signal is reduced.

The monitoring device is self-contained, compact and is preferably strapped about the wrist over the region where a radial pulse is normally detected. Heart rate and abnormalities in the heart beat rate are sensed by the device. Because no external connections are necessary to a power source, for example, the device is particularly useful for ambulatory patients suffering from various types of heart ailments. A pressure sensitive diaphragm sensor is held against the skin over the radial pulse re...

Lengths of rounds roll down parallel runners and over tolerance strips spaced away from and parallel to the plane of the runners. Out of straightness sections of the rounds contact the tolerance strips actuating circuitry for marking the length as to its straightness tolerance.

A monitor system for detecting bent, broken, missing or otherwise mutilated operating elements in a cyclically operable machine (e.g., the knitting needles in a rotary knitting machine) comprising a sensing device for sensing passage of individual operating elements, a detector for detecting mutilated elements from the output of the sensing device to develop an error signal, and a range gate for blanking the detector for most of a complete cycle or period after each error signal. A counter devel...

The present invention is directed to a monitor circuit for use in a communication receiver including an input circuit and a detecting circuit having applied thereto a carrier signal carrying intelligence from a transmitter, the monitor circuit comprising a monitor input circuit having the input thereof coupled to the detecting circuit and an output, the monitor input circuit being responsive to the application of the carrier signal to the receiver for providing a control signal on the output the...

A particle monitoring device located in a line carrying a moving fluid, as air, containing particles. The device has a particle sensing member providing signals that are in direct proportion to the amount of particles in the moving fluid. The sensing member can be a flexible cover enclosing the large end of a housing having a side wall that increases in diameter as a function of distance from its inlet, as a funnel-shaped housing. Particles that hit the cover produce an audio signal providing in...

An electronically amplified acoustic signal is used to activate a marker and record the time of occurrence of the signal on a rotating disc.

A sequential monitor for comparing redundant signals appearing at various points in a control system and for providing an indication when the difference between the redundant signals exceeds a predetermined limit. The monitor is multiplexed in the system so that a single monitor suffices for comparing signals at all of the points and is fail safe in that it provides an indication for internal monitor malfunctions as well as for signal failures.