Abstract: A slack adjuster for a rail vehicle brake system, comprising a brake force receiving adjuster tube (1, 1A), a spindle (4; 4A) axially movable therein, and two nuts, an adjuster nut (5; 5A) and a leader nut (6; 6A), which are in non-self-locking thread engagement with the spindle and are held resiliently in clutch engagement with a clutch ring (7; 7A) and a control sleeve (16; 16A) respectively, the latter being axially movable in the tube a distance (A) corresponding to the desired slack. In order to transform this so called stroke-sensing adjuster into the so called clearance-sensing type being independent of the elasticity part of the application stroke the adjuster nut (5; 5A) and the clutch ring (7; 7A) in coaction are arranged to submit a force to the leader nut (6; 6A) for locking the latter against rotation under deformation of a resilient element (13; 30; 34; 38; 5A) at the occurrence of a counter-force on the spindle (4; 4A) during the brake application.

Abstract: An electromagnetic track brake for a railway vehicle comprises an elongate brake energizing coil for energizing a plurality of U-shaped braking shoes mounted in a row on a rigid frame. To improve transmission of braking reaction forces from the shoes to the vehicle each shoe is moved downwards individually relative to the frame against spring bias. A tie rod extends along a lower branch of the coil engaging each of the braking shoes for the transmission of braking forces from the shoes to the tie rod. A cylindrical rod rigidly coupled to the frame is operably connected to the end of the tie rod to take up the braking reaction forces transmitted to the tie rod.

Abstract: A rail vehicle disc brake arrangement includes a yoke (1) with a brake cylinder (11) and a slack adjuster (16). In order to obtain advantages as regards design, function and space requirements the yoke (1) comprises two telescoping yoke parts: a fixed part (4) and a movable part (5). The slack adjuster (16) is arranged to act between these two parts. The brake cylinder (11) on the movable yoke part is connected to a yoke lever (6), which is pivotally attached to the movable part, has a pad holder (8) with a brake pad (9), and controls the slack adjuster (16).

Abstract: A conductor provides electrical connection passing through a rubber cushioned rail vehicle wheel having rubber elements in between a central metal wheel portion and an outer flanged metal wheel tire. Thus, a length of wire has a central conductor connection tag attached to the central wheel portion with U-shaped spring clips at each end straddling over and electrically connecting with an internal mating ridge on the tire extending between two spaced rubber elements separating the central portion and tire.

Abstract: Suspension for a rail vehicle disc brake unit (1) comprises a suspension console (11) to be attached to a vehicle bogie or underframe, a cradle (13) movably attached to the console, and suspension links (17, 18) pivotally connecting the brake pad holders (6) to the cradle. A further supporting connection (19-21) is provided between the console and the brake unit. In order to obtain the desired mobility for the brake disc during braking there is between the console (11) and the cradle (13) a joint (14), which is stiff in the brake force transmission direction but comparatively resilient in other directions. The supporting connection (19-21) has basically the same properties.

Abstract: A rail vehicle slack adjuster is provided with a barrel detented against rotation under normal working conditions. However, rotation of the barrel effects adjustment of the length of the adjuster. Thus, by means of a flexible clip ring splined to the barrel and detenting into a notch on the non-rotatable pull rod, manual force permits the clip ring to be distorted out of the notch for rotation of the barrel to accomplish manual adjustment when replacing brake blocks, or the like.

Abstract: A rail vehicle slack adjuster of the axial type has a barrel (4), a spindle (2), and an adjuster nut (29).In order to prevent the spindle (2) from leaving its thread engagement with the adjuster nut (29) the spindle is provided with a stop ring (64) so located that it will contact a barrel part (57) and, via the barrel and a barrel spring (53), bring about a closing of a main clutch (49, 50) between a pull means (6, 48) and the adjuster nut.

Abstract: A magnetic to optic transducer based upon magnetic bubble technology is provided. A magnetic sheet with a thin magnetic film guide pattern creating a bubble path thereon responds to external magnetic fields to position magnetic bubbles along the path. A varying magnetic field in the plane of the sheet displaces bubbles which are optically sensed by a fiber light conductor contacting both sides of the magnetic sheet at a location in the bubble path. A polarized light source transmits light through the fiber and a polarizing filter on one side of the magnetic sheet to a light detector on the other side of the sheet. The presence or absence of the magnetic bubble at the fiber position thereby affects the polarization of the light transmitted through the sheet and provides a detectable signal for reading the nature of the external magnetic field. The transducer may comprise permanent magnetic field generating means which do not require continuous energization.

Abstract: An axial type rail vehicle slack adjuster has a barrel (4) with a set of circumferential notches (62) retaining elements (62, 55, 57) against axial movement along the barrel which coact with slack adjuster mechanism elements (25, 54, 60) to stop axial movement thereof relative to the barrel notch.

Abstract: A rail vehicle slack adjuster of the double-acting, clearance-sensing, axial type has an elongated barrel (4), a pull means (6, 48), a non-rotatable spindle (2), a leader unit (8-27) and an adjuster unit (29-52) cooperating with the spindle in the barrel, and a barrel spring (53) acting on the adjuster unit. A leader nut (8) in the leader unit can be clutched (13-16) to the barrel under the action of a pay-out spring (21). An adjuster nut (29) in the adjuster unit can be clutched to the pull means.The adjuster unit (29-52) includes a non-rotatable spline sleeve (40) acted on by the pulling brake force from the pull means (6, 48) and the opposite force from the barrel spring (53). The leader nut (8) is provided with a telescope sleeve (11) and a leader ring (27), both only axially movable on the leader nut and being clutchable to the spline sleeve. The leader nut is also provided with declutching means (13-15) enabling the nut to rotate in spite of the clutch engagement (16) with the barrel (4).

Abstract: A device at a slack adjuster for manually rotating a spindle (1, 5) therein at the replacement of worn-out brake blocks, the spindle being in clutch engagement with a non-rotatable adjuster ear (6).In order to provide for a rotational movement of the spindle (1, 5) by external circumferential movements back and forth a locking spring (12) is arranged between a part (5) of the spindle and an externally actuatable operating sleeve (10).

Abstract: A fluid pressure actuated brake unit has a push rod (3) axially movable in a housing (1) and a piston (2) with a wedge element (7) axially movable substantially perpendicular thereto. A wedge surface (12) on the wedge element is arranged to transmit a force from the piston to the push rod via a working roller (8) on the push rod.In order to reduce the dimensions of the wedge element (7) and to give a smooth transition from the brake application stroke to the brake operation stroke the wedge surface (12) at its end remote from the piston (2) has an edge (13) intended for coaction with the working roller (8) during the brake application stroke.

Abstract: An air controlling device for use in a dryer for compressed air comprises dual containers of water absorbing, air permeable material arranged in parallel, each of the dual containers being alternately selected to dry compressed air and to be purged, two separate valve members, actuated by impulses of power, changing the connections between alternate containers.

Abstract: A method for attenuating oscillations of a rotating system.Acceleration and deceleration of the system are sensed. In dependence on an acceleration, an eddy-current brake is applied to the rotating system. In dependence on a deceleration, rotational energy is supplied to the system from a rotational energy source.

Abstract: This invention relates to a change-over valve (or a so called empty-load valve), preferably for a railway vehicle, having a valve device opening or closing a pneumatic passageway depending on the position of a mechanical operating system or in other words the load on the vehicle.In order to improve the working range of the external operating arm and the exactness of the change-over point the operating system comprises a force transmitting chain from said operating arm to the valve device via a spring, a knee lever, and a valve operating rod structured in such a geometrical way that the axis of the spring is substantially perpendicular to the valve operating rod.

Abstract: A device at a brake actuator for permitting thrust force transmission between an axially movable push rod (4) of the actuator and a brake block holder (6) moving out of line with the push rod.In order to ensure force transmission irrespective of the brake block holder movements and to avoid any slippage between the members a transmission part (5) is arranged between the push rod (4) and the brake block holder (6) and has spherical surfaces in engagement therewith, these surfaces having a common center.

Abstract: A releasing device for disconnecting a buoyant body from an anchor a predetermined period after having been sunk into water.In order to accomplish a reliable device, which may be stored for very long periods of time, a piston is movable in a cylinder under the influence of a spring and a water pressure differential. The piston controls the disconnection of the buoyant body and the anchor, as the cylinder is connected to one part and the piston will release an element connected to the other part in a disconnecting position under the influence of the spring.

Abstract: A mine anchor for anchoring a buoyant mine and provided with a rotatable drum for a mine anchoring wire.In order to obtain a reliable and accurate anchoring at a preset depth there is a contact manometer at the mine and a signal line for transmitting a signal therefrom to an exploding device on the mine locking the drum against further rotation.

Abstract: A fluid operated braking control system for spring brake cylinders admitting fluid under pressure in both brake applying and brake release directions has a selectively variable pressure from zero to a predetermined maximum applied to overcome the spring and release the brakes and a selectively operable constant pressure fluid applied to aid the spring in the braking direction.

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.