Abstract: An automatic brake resetting device for railway vehicle brakes has two telescopingly displaceable rod members which transmit a braking force. A rotatable coupling element having a threaded shaft with a non-self-locking thread is connected to one of the rod members and a rotary coupling connects the coupling element with the other rod member. The rotary coupling is actuated by axial displacement of the rotatable coupling element with respect to the other rod member and is urged by a spring into the engaged position between the rotatable coupling element and the other rod member. A lever transmits force between a control stop device slideably supported on a guide member and the rotatable coupling element and has such a transmission ratio so as to amplify the force transmitted from a spring of the control stop device to the coupling element.

Abstract: The device automatically adjusts the slack in the brake linkage of railway vehicle during the braking process and has two telescoping rod members one of which is connected with a brake motor and the other is connected to the brake linkage. A nut, nonrotateably mounted on the brake linkage rod member, is threaded upon a rotateable spindle shaft which is axially moveable a limited distance within the brake motor rod member and is connected to this rod member by a control clutch. When the control clutch is stressed by torque, the control clutch member will become disengaged from the brake motor rod member to permit a relative adjustment between the two rod members to overcome any slack. When slack is overcome, a rotary clutch between the threaded spindle and the brake motor rod member will be engaged so that braking force can be transmitted between the rod members.

Abstract: A braking apparatus for rail vehicles has a brake actuating unit to one side of the vehicle wheel. A pair of brake shoes oppositely disposed on both sides of the wheel can be pressed against the contact surface of the wheel. A first vertical braking lever is pivotable under a force from the brake actuating unit with respect to the contact force exerted by the first brake shoe. A second vertical braking lever is similarly connected to the other brake shoe. The lower ends of both braking levers are pivotally connected with two traverse members each interconnecting the ends of two parallel tie rods which extent horizontally across both faces of the vehicle wheel. The play or clearance in the application of the brake shoes to the wheel contact surface is automatically adjusted by a self-actuating device in each tie rod. Each adjusting device comprises a screw coupling consisting of a nut threaded on a spindle shaft.

Abstract: A one-nut slack adjuster with a nut axially disposed having clutch surfaces and on non-self-locking engagement on a spindle coaxially positioned within a tube moving axially to apply brakes has a spring biased thrust bearing held forwardly on the nut in the brake application direction disposed to engage a fixed position control member and when the nut is moved axially forwardly a predetermined desired slack distance thereby to bias the nut backwardly. A second trust bearing on this nut is placed forward of the control member to engage it at a distance from rest less than the clutch separation distance.In a double acting embodiment a further trust bearing spring biased between the nut and tube in a position forward of the control member holds the nut in a forward direction in clutch engagement.A further feature is a barrel spring arrangement foreshortening the assembly by a sleeve converting two coaxially disposed spring sections in series.

Abstract: A clasp brake rigging is provided with an axially acting brake regulator coupled between a pivotable control lever and a rigging pull rod opposite the dead brake lever. The control lever at an intermediate position is coupled by an adjustable length link to the live brake lever at the coupling position with its brake block assembly.