Abstract: An on-board system for measuring vehicle loads on dual axles with a suspension system having a front hanger, a rear hanger, an equalizer and an equalizer hanger. Attached to the equalizer, in one embodiment, are a plurality of strain gauges, arranged in two cut-out portions. The strain gauges are positioned so that the measured strain corresponds to the force of the vertical load on the equalizer. The output of the strain gauges is then applied to a conventional bridge circuit and from there to a conventional electronic circuit to provide a display which indicates the weight of the load on the dual wheels.

Abstract: A weighing system for a vehicle having a spring supportive frame which moves relative to the axles of the vehicle in response to changes in load weight on the vehicle. The weighing system includes at least one position indicator for each axle to be monitored which provides electrical signals which vary in accordance with the built position of the frame relative to the axle which is being monitored. The weighing system also includes a programmed central processing unit for receiving the electrical signals from the position indicator and for calculating the load weight on the frame, based on the value of the electrical signals.

Abstract: For measuring the weight of a load of a load-carrier of at least one vehicle, which load-carrier is supported by at least one spring unit on a mobile substructure of the vehicle, weighing apparatus is provided with means for measuring the elastic deformation of the spring unit or units under the load. The measuring means includes a reference object mounted on the load-carrier. To avoid vulnerable equipment on the vehicle and to improve information obtained, the measuring means includes electrical observation means for non-contact observation of the position of the reference object. The electrical observation means being free of the vehicle.

Abstract: An on-board system for measuring vehicle loads on dual axles with a suspension system having a front hanger, a rear hanger, an equalizer and an equalizer hanger. Attached to the equalizer, in one embodiment, are a plurality of strain gauges, arranged in two cut-out portions. The strain gauges are positioned so that the measured strain corresponds to the force of the vertical load on the equalizer. The output of the strain gauges is then applied to a conventional bridge circuit and from there to a conventional electronic circuit to provide a display which indicates the weight of the load on the dual wheels.

Abstract: Device for controlling drive couplings of motor bogie axles of a locomotive. The axles are individually driven by motors (4, 5) controlled by a control assembly receiving signals from sensors (6) which are constituted for measuring the vertical load of at least one motor axle and are mounted on the primary suspension of the axle.

Abstract: An onboard device for determining the weight of a vehicle. A transducer is coupled at one end with a fixed point on the vehicle and is coupled at the other end with a single or tandem axle of the vehicle. The transducer measures the change in distance between the fixed point and the axle and sends an electrical signal to a display unit. The display unit processes the signal and displays the vehicle weight which corresponds to the signal received from the transducer. An upper carriage mounts the upper end of the transducer to the fixed point on the vehicle. A lower carriage couples the lower end of the transducer with the axle. Telescoping pipes shield the transducer. A grade compensating device corrects the signal generated by the transducer to compensate for nonlevel surfaces.

Abstract: A device (10) for providing an indication of loads exerted on a vehicle frame (12) comprises a sensing unit (22) mounted to and between the frame (12) and the vehicle axle (14) and for detecting vertical displacement of the frame (12) relative to the axle (14) when loads are exerted on the frame (12). The sensing unit (22) comprises an arm (126) pivotally mounted to the frame (12), through a pair of telescoping tubes (32, 44), and an adjustment rod (124) movably mounted to and between the arm (126) and the axle (14). When a load is exerted on the frame (12), the same depresses relative to the axle (14) and the arm (124) rotates. Rotational movement of the arm (124) is measured by a clinometer (128) mounted thereto and which converts the angular measurement into a coherent digital or analogue readout displayed by a receiving unit (26).

Abstract: A weighing system is provided which measures the weight of a vehicle such as a trailer or a tractor-trailer. A pair of ultrasonic transducers and reflectors are mounted on each axle in enclosed cylinders, the opposite end of each cylinder being connected to the frame of the tractor or trailer. A temperature sensor is provided within each cylinder. The vertical displacement of the frame relative to the axle is sensed by pulsing each of the transducers and measuring the time for the signal to be reflected, compensating for temperature within each cylinder. The signals are added together to produce a net total weight corrected for any incline on which the tractor-trailer stands when weighed and also correcting for temperatures sensed within each cylinder.

Abstract: A track working or transport vehicle comprises a frame and two undercarriages supporting the frame. Springs are mounted between the side frames of the undercarriages and the vehicle frame, the springs having a stroke whose length is proportional to variable loads distributed to a respective undercarriage wheel from the vehicle frame. A displacement pickup is connected to each group of springs and arranged to measure the stroke thereof, the pickup generating an electrical output signal proportional to the measured stroke. An arrangement for continuously monitoring and indicating the loads distributed to the respective wheels includes a summation circuit having a first input receiving the output signals from the pickups, a second input received fixed electrical signals proportional to the weight of non-yieldingly mounted parts of the undercarriages, and an output transmitting electrical output signals proportional to the wheel loads derived from the inputs.

Abstract: A vehicle overload detector characterized as mechanism which, after installation, is calibrated to a preselected initial setting, where upon loading a vehicle, the resulting metered deflection visibly advises the operator of any possible overload condition. Restated otherwise, the mechanism measures vehicle frame deflection, employing two cables, oppositely wound around a control pulley, for establishing the aforesaid initial setting and the deflected setting, respectively.

Abstract: An apparatus for accurately and conveniently weighing the load carried in a vehicle provides a readout of the weight of the cargo by sensing the relative vertical movement of the load-carrying portion of the vehicle, which is proportional to the weight of the load, and by converting the sensed relative vertical motion to a readout of the weight of the load.

Abstract: This relates to a load spring indicator for a railway car truck for indicating the load condition of springs supporting the bolster on the truck side frame. A reference is carried by the bolster and an indicator is carried by the truck side frame. The bolster reference is preferably the lower edge of the bolster gib or side rib while the indicator is an added plate or casting portion having an upper edge alignable with the lower edge of the bolster gib in the light condition of the car and a lower edge alignable with the bolster gib lower edge in the loaded condition of the car when the spring sets are of the proper strength and the car is not overloaded.

Abstract: A system for measuring the load carried by a vehicle of the type employing a leaf spring suspension. In a leaf spring suspension an elongated spring is supported between a pair of spaced apart hangers on each side of the vehicle. The hangers are then secured to the vehicle frame. An axle extends transversely beneath the vehicle and is clamped to the center of the springs. The measuring system includes four spaced apart strain gauges mounted on the upper surface of the spring beneath the axle clamp equidistant from the center of the spring. The strain gauges are connected to each other in a bridge configuration, and they measure the strain of the springs responsive to vehicle loading.

Abstract: A load analyzer is provided for use with an automotive vehicle in which sensors having relatively reciprocal elements are arranged between the load bed and the axles of the vehicle. The load bed is spring biased relative to the axles, so that loading of the vehicle forces the load bed downward, thereby altering the relative position of the elements of the sensors. Each sensor provides a signal indicative of the relative position of its elements. An indicator responds to the signal by indicating the weight present in the load bed, as derived from the magnitude of the sensor signal, which in turn is proportional to the spring constant of the springs supporting the load bed relative to the axles. The indicator is adjustable so that it may be recalibrated by placing a known weight in the vehicle load bed and adjusting the output indication to correspond to that weight.

Abstract: A load measuring system for a tandem-wheeled vehicle. The tandem axles of the vehicle engage opposite ends of two transversely spaced equalizing beams having their midpoints pivotally supporting the vehicle. Deflections of the equalizing beams and front axle, responsive to loading of the vehicle, are sensed by a load cell transducer mounted on each equalizing beam and on the front axle. An amplifying circuit receives the transducer outputs and drives a load indicator. The load indicator provides a visual indication of front and rear wheel axle loading with respect to a preset maximum load point.

Abstract: An apparatus for measuring loads with the use of a plurality of measuring points, for instance in motor vehicles, in which one load-supporting measuring element is placed at each measuring point and contains a resilient material, such as rubber, for taking up lateral forces acting upon the measuring element.

Abstract: An apparatus for providing an indication of the weight of a load on a vehicle or on any part of the vehicle comprises a sensing operable between a moving part and a stationary part of the vehicle and sensing the distance between the stationary part and the moving part, a transducer unit converting any alteration of the said distance detected by the sensing means into a proportional electric property and an electrical gauge receiving the output from said transducer unit characterized in that the sensing means includes a sensor arm having two rigid end portions joined by a length of resilient material in a turn-buckle effect, with a rigid end portion being adapted to be connected between the moving part and the stationary part of the vehicle in such a manner as to detect any change in the alteration of the aforesaid distance.

Abstract: Apparatus for attaching at least one weight sensing gauge to a vehicle supported by at least two spring assemblies such that the weight sensing gauge senses the forces transmitted to the spring assemblies, comprising a bracket secured to the vehicle chassis and at least one attachment means coupled to one end of the weight sensing gauge and pivotally mounted to the bracket. The other end of the weight sensing gauge is pivotally secured to the chassis of the vehicle via the bracket. The attachment means include first and second levers pivotally connected to each other, the first lever being coupled to the first spring assembly of the vehicle and the second lever being coupled to the second spring assembly of the vehicle for mechanically interpreting the forces applied to the spring assemblies and for transmitting the forces to the weight sensing gauge.