Abstract: This invention provides a railway car resilient side bearing assembly which includes a housing member with a cavity formed therein. A first substantial portion of a resilient spring block is positioned within the cavity of the housing member. There is at least one aperture formed in each end of the spring block. A friction head member is provided which has a cavity therein that surrounds a second portion of the spring block. An at least one peg member is secured substantially perpendicular to and substantially at a geometric center of each of an upper surface of a base portion of the housing member and a lower surface of the plate portion of the friction head member which engages a respective one of the at least one aperture in each end of the spring block to maintain the resilient side bearing assembly together. A height indicator is provided on the resilient side bearing assembly for indicating the nominal height of usch resilient side bearing assembly after installation.

Abstract: An apparatus which measures and regulates the braking torque of a brake unit in long-term operational use. The brake unit includes both a brakable element and the braking device. An output signal from at least one temperature-dependent measuring element, located on or in one of the brakable elements and the braking device, is supplied to an evaluation apparatus. The evaluation apparatus determines, from the current value of the output signal of the temperature-measuring element, a present braking torque, and adjusts such torque when desirable.

Abstract: A spring brake cylinder assembly in which a pushrod connectable to a brake assembly is extendable from an end of such cylinder housing the piston member. The spring brake cylinder further includes a clutch release mechanism for manually releasing the brake force being applied.

Abstract: The invention taught herein is for an electrically-operated air compressor unit in which the motor and the air compressor are hung under the floor of the railroad car perpendicular to the floor in series, so that the required space under the floor of the railroad car is only the space occupied by the motor, and the space of the air compressor can be eliminated.

Abstract: A setpont adjuster for a brake pedal in a motor vehicle to control an electric brake system. The setpoint adjuster includes a displacement sensor and a force sensor in parallel-connection, in which the force sensor supplies the reference value. Electronic main circuits are connected subsequently to the sensors and test the signals of the sensors for reasonableness according to different criteria and control a warning light in case of a fault.

Abstract: A spring brake cylinder assembly having a spring-biased piston positioned therein. A pushrod is engaged with the piston through a clutch, which clutch includes both a clutch control device and a clutch operating mechanism that can manually release a brake application being applied by the assembly.

Abstract: An apparatus is disclosed for the control of brake pressure in a trailer pulled by a tractor. The apparatus includes a two-circuit controllable relay valve as the trailer control valve. The first circuit is controlled by the brake valve of the tractor with the pressure from the brake apparatus of such tractor. The second circuit can be optionally-connected to a distribution valve with a pressure medium source with a specified pressure or with atmosphere. Activation of the distribution valve is controlled so that the distribution valve connects the second circuit with the pressure medium source before or at the beginning of the activation of the first circuit. With this apparatus, the brake pressure can be increased in the brake apparatus of the trailer prior to increase of the brake pressure in the brake apparatus of the tractor. The level of brake pressure increased first in the brake unit of the trailer can be regulated by a set screw acting on the trailer control valve.

Abstract: The present invention discloses an electromagnetic valve for use in a railroad car slip prevention control of the brake system. Such electromagnetic valve having three-position control capability. The control position is selected based on an excitation current supplied to a solenoid valve.

Abstract: A fluid-pressure-operated, three position working cylinder includes a cylindrical housing having a graduated bore formed therein and a movable primary piston dividing the bore into first and second pressure chambers. A movable secondary piston surrounds a portion of the primary piston and moves relative to the primary piston within the limits of a piston stop arrangement formed on opposing surfaces of the pistons. The piston stop arrangement includes an elastic stop on the primary piston which interacts with a sloped stop formed on the secondary piston so that upon initial insertion of the secondary piston onto the primary piston, the sloped stop compresses the elastic stop. The sloped stop includes a lip portion that can contact the elastic stop so as to restrain the secondary piston from further movement in one direction relative to the primary piston. A vent passage formed in the housing allows venting of the space between the two pistons.

Abstract: A fixture which allows cuts to be made in a board with a hand held router in both a longitudinal and transverse direction of such board is disclosed. The fixture includes a pair of first members of predetermined length. A pair of second members of shorter predetermined length secured to the first pair of members such that in an assembled relationship they form a rectangle. At least one T-shaped slotformed in each of the first pair of members and a notch formed in at least one of the second pair of members intermediate the ends thereof.

Abstract: This invention provides a pneumatic system moisture-removal apparatus wherein an end surface of an absorbent body is formed as a conical shape. The apparatus includes an end plate approximately perpendicular to the axial direction of the absorbent body fixed on the top portion of the end surface of the cone. A narrow space is located between the end plate and the conical-shaped end surface which serves as a passageway for compressed air. Compressed air is supplied to the apparatus from an outside circumference of the absorbent body to the center in a radial direction. The moisture-removal apparatus includes a honeycomb-type cylindrical absorbent body having a plurality of apertures. Compressed air is communicated into one end surface of the absorbent body in an axial direction. Moisture is extracted as the air passes through the apertures and is discharged from the opposite end surface of the absorbent body.

Abstract: An air compressor pressure adjustment device designed such that any values between two set points are determined and used as first and second standard values. When the air pressure in the reservoir decreases to the first standard value the air compressor is driven at a low speed. When the air pressure increases in the reservoir and reaches an upper limit set point the compressor is turned off. When this air pressure decreases to less than the lower limit set point, the air compressor is started once more.

Abstract: An antilocking system is being proposed which does not generate unplanned control signals when axle oscillations occur. To this purpose, a threshold value stage 6 for the wheel deceleration signals (-b) has an increased threshold value. After separation of the wheel velocity V.sub.R from the vehicle reference velocity V.sub.ref, this value is again decreased in stages so that a normal controlled braking process is not affected.

Abstract: Disclosed is a spring brake cylinder for use on motor vehicles. The cylinder is actuated to a release position in response to fluid pressure. The cylinder includes a spring actuator inserted between the brake cylinder base and a spring brake piston. A tensioning device is provided which mechanically acts upon the spring brake piston and facilitates adjustment of the distance between the spring brake piston and the cylinder base. The spring brake piston and the spring actuator can be assembled into a pretensioned unit outside the spring brake cylinder.

Abstract: An automatic adjustment apparatus for the brake lever of a vehicle brake with a worm drive, an adjustment mechanism and a one-way coupling. The automatic adjustment of the brake lever on the brake shaft takes place by means of a one-way coupling. When there is a manual adjustment of the brake lever in the direction of the release of the brake jaws, the one-way coupling can be mechanically disengaged.

Abstract: A control apparatus is disclosed for a road vehicle, which contains a transmission control. The control apparatus includes, among other things, devices which recognize whether the vehicle is on the crest of a hill or in a valley, and whether the vehicle is travelling uphill or downhill over the crest of the hill or through a valley. For this purpose, the control apparatus includes a first devices which compares and calculates the difference between two stationary torques M.sub.stat calculated at different times which are necessary for nonaccelerating travel of the vehicle. In addition, the control apparatus contains a second devices which checks the mathematical sign of the difference .DELTA.M.sub.stat. Finally, the control apparatus contains a third devices which compares the stationary torque M.sub.stat with a specified value a.

Abstract: A preselected parameter of the wheel brakes of a motor vehicle, to be equalized with respect to their braking force, is sensed. Such parameter is correlated with the amount of braking force being applied. A signal is generated by the preselected sensor, which is then used to control supplemental pressure-regulating valves, positioned in the brake pressure feed line to the respective wheel brakes. The parameter selected to be sensed can be, among other things, either the braking force or torque being applied or the wheel brake temperature.

Abstract: A trigger mechanism is taught which actuates an overtravel control apparatus of a slack adjuster in a railway vehicle brake rigging in response to the measured travel distance of a brake cylinder piston rod. The triggering mechanism includes an elongated hollow member secured to one end of the slack adjuster housing. An abutment surface carried by an extension member secured to one end of the overtravel control apparatus which moves reciprocally within the hollow member. A pivotal connection is secured adjacent an aperture formed in the wall of the hollow member. A lever device is pivotally connected to such pivotal connection and positioned to engage at one end thereof the abutment surface and having the other end movable in response to the brake cylinder piston rod travel distance.

Abstract: A brake slack adjusting apparatus is disclosed which includes a threaded member at least partially extending coaxially within a tubular member. Threadedly engaging the threaded member is a first rotatable member for varying the relative position of the rotatable member with respect to the threaded rod member. A second rotatable member disposed adjacent the threaded rod member and the tubular housing member selectively couples the tubular housing member to the threaded rod member during a brake application stroke to transmit brake forces to the threaded rod member and to vary the relative axial position between the tubular housing member and the threaded rod member. A locking device is provided between the first rotatable member and the second rotatable member to limit the relative movement between the first rotatable member and the threaded rod member when a predetermined force is transmitted through the second rotatable member.

Abstract: A fluid pressure responsive brake system for the trailer of a vehicle. The brake system includes a trailer supply circuit, which can be connected with the supply circuit of the tractor and which can be connected with an electrical trailer brake circuit, which is connected with the brake system emitting electrical brake signals and the electrical feed of the tractor. There is an electro-fluidic switching apparatus with an OR circuit, by means of which and in connection with an electronic control unit of the trailer, the brakes of the trailer are set if the trailer brake system is separated from the supply circuit of the tractor and/or from the electrical brake signals or the power supply of the tractor.