This invention refers to a hydraulic or pneumatic machine with tilting blades, running either as an engine on a fluid flow or on pressure fluid or as a pump or a compressor. The hydraulic or pneumatic machine on a fluid flow according to the invention consists of a cylindrical casing with inlet and outlet openings, radially arranged, diametrically oposed, along the fluid flowing direction, some disk like rotors with tilting blades, hinged over their front faces and provided with driving mechanisms of their own, and some fixed drums located between the rotors, concentrically to them, making inside the machine some channels, symetrically arranged on one or several stages. Flowing through the channels, the fluid drives the tilting blades causing the movement of the rotors, all the rotors moving to one sense being coupled to the same outlet shaft of the machine. The tilting blades of the hydraulic or pneumatic machine operating according to the invention with pressure fluid, run in variable depth grooves located in the rings between the front faces of the rotors and connected to the fluid circuit, the operation conditions of the machine-motor or pump-being determined by the moving sense of the blade in the groove.

A power transmitting apparatus comprises a housing (3) having an opening at its end surface in the longitudinal direction thereof to be closed by a cover member (33), which supports an end of a brake support shaft (60) rotatably supporting a brake shoe (61). A hydraulic cylinder (63) for operation the brake shoe (61) is detachably attached to a side wall of the housing (3). A piston (64) of the hydraulic cylinder (63) contacts with a free end of the brake shoe (61). The cover member (33) also supports ends of a clutch shaft (26) and a PTO shaft (29), while a clutch housing (38) of a PTO clutch (27) is provided on the clutch shaft (26) so as to be braked by the brake shoe (61) in the state of the PTO clutch disengaged, thereby constituting a subassembly. By attaching the cover member (33) to the end surface of the housing (3) so as to close the opening, all the brake support shaft (60), the clutch shaft (26) and the PTO shaft (29) supported by the cover member (33) are installed in the housing (3).

1. A vibrating grinding machine with a container (1) for receiving the mass to be vibrated and a generator of vibrations (2), characterized in that the container (1) comprises at the bottom (3, 3') a discharge device (14) for the mass to be vibrated, on which is disposed a free internal jacket (10), the bottom being concave, convex or flat-shaped in the region of the discharge device.

The valve, comprising a body (1) with an inner fluid channel (4, 32) controlled by a shut-off element (8) and seat (9), incorporates a manually-operated emergency cut-out system that allows the fluid flow to be halted immediately and completely, and consists of a head (20) that moves along the axis (X - X') of the valve, and a bush (19) with a spiral cam slot. The cam slot receives a spindle (22) that can occupy two positions corresponding to the opening or closure of the fluid channel (4, 32), and either the head or bush co-operated directly or indirectly with a slider (25) controlling the shut-off element.

An extrusion apparatus having a barrel (3) and a rotatable threaded screw (1) coaxially positioned therein is disclosed. The apparatus includes an upstream inlet section having an opening (13) therein for receiving material to be processed by the apparatus, a compression section (2) downstream of the inlet section, and a mixing or plasticizing section (7/8) downstream of the compression section. The interior surface of the barrel is provided with an undercut (12) therein which intercommunicates the feed opening with the compression section and has a portion thereof which extends downstream in the compression section about the interior surface of the barrel with a continuously decreasing cross-sectional area. The undercut may be formed in a cylindrical insert (9), carried within the barrel and, in an alternate embodiment, a second undercut cylindrical insert positioned about the first insert and rotatable relative thereto may be employed to vary the cross-sectional area of the undercut.

A device for preparing and ejecting polymeric cement made from at least two pre-packaged components comprises a tubular vessel including a first axial end wall having a closed outlet, and a second axial end wall having an aperture. A first starting component of the polymeric cement is present inside said tubular vessel near the first axial end wall. A hollow shaft extends through said aperture of the second axial end wall. A piston element comprises a closed container filled with a second starting component of the polymeric cement. The piston element is selectively lockable to the shaft. The container has a bore and is slidingly engaged upon said shaft. An agitator element is secured to one end of the shaft. Furthermore opening means for providing an opening in the closed container are provided. The hollow shaft is provided with a gas permeable filter means.

A valve assembly comprising a chamber, the chamber having an inlet which is adapted to be connected to a source of relatively high pressure fluid, and an outlet which is adapted to be connected to a source of relatively low pressure fluid, and a switch valve which is switchable between a first configuration in which the valve closes the outlet and opens the inlet, and a second configuration in which the valve closes the inlet and opens the outlet, characterised in that a flow control device is provided between the outlet and the volume of relatively low pressure fluid, the flow control device including a restrictor portion which restricts flow of fluid through the flow control device, the extent to which fluid flow is restricted decreasing as the fluid pressure in the chamber increases.

The residual pressure valve comprises a rubber tube (2) which acts as a valve seat and holds the gas control component (1) under tension. The control component has chambers (1H1, 1H2) at each end which are connected by vertical channels (K1A, K1B, K2A, K2B) to control chambers (SA, SB) on its lower side. These are separated by a radial partition (ZW).

1. A single-spindle or multi-spindle deep boring machine having a tool change device characterised in that the device (7) is formed by cylindrically arranged receiving tubes (8), wherein along a part of the length of the receiving tubes (8) the cross-section thereof is removed over an angle of somewhat more than 180 degrees, in such a way that for the purposes of receiving a deep boring tool (3, 3') perpendicularly to the axis of the receiving tube (8), wherein the inside diameter thereof is substantially equal to the diameter of the deep boring tool (3, 3'), an open half-shell is formed, from which the deep boring tool can be pushed into the remaining part in the axial direction of the receiving tube (8).

The invention concerns a vibration damper (1) for rails (3) of a railway, resting on sleepers (4) which are situated at a certain distance (10) from one another, which damper (1) is designed to be fixed to said rails between two successive sleepers (4), whereby said damper (1) comprises at least one damping element (7) which must be placed against the rail flange (3a) and/or the top side of the rail foot (3b) of the rail (3), so that the far end (6) of the damping element (7) which is turned away from the rail (3) can freely vibrate.