Abstract: An improved air spring with a diaphragm fixed to a closing element by overlapping fitting, wherein the diaphragm is made of rubber or any other synthetic material similar to rubber, it is provided with a strength carrier insert and it has on one or both ends flanges reinforced with steel wire or any other suitable wire. The closing element is a cylindrical-symmetrical flanged disc, made of sheet-material processed expediently by sheet-deformation, which is subdivided into sections promoting assembly with introductory continuously increasing and thereafter reduced local diameter.

Abstract: The invention relates to form carrier and actuating construction for the vulcanizing machine of rubber tires for motor vehicles, wherein the vertically moveable upper part contains a catch-ring connected to the dome of the vulcanizing machine, an upper plate fitting thereto, a locking ring, furtheron form-segments defining the daylight and upper form-half, while the fixed bottom part includes the base plate and the lower form-half fixed thereto. The construction according to the invention can be characterized in that the form-segments (16) are fixed exchangeably to the gliding segments (4) which can be guided ascew in the guide rails having been formed on the inner conical or pyramidal surface of the locking ring (3) and the gliding segments (4) are connected to the upper plate (1) with the insertion of horizontal guide elements and on the locking ring (3) there is a correction (11) provided with set-screws (10) and fixing screws gap between the catch ring (5) and the upper plate (1).

Abstract: An apparatus and process for the vulcanization of laminar rubber products wherein the process comprises winding onto a drum an unvulcanized laminar rubber product together with a metallic band, applying a counter force to the metallic band as it is being wound up to prestress the wound up layers, applying substantially uniform pressure on the surface of the conducting band at the point where it and the laminar rubber products are being wound onto the drum and then applying electrical current to the wound up electrically conducting band to provide heat for the vulcanization of the wound up laminar layers. The apparatus comprises two parallel drums interconnected by the metallic band which is first wound with the laminar rubber onto one drum and when the vulcanized laminar rubber is removed the metallic band is wound onto the other drum.

Abstract: The present invention relates to a two-piece valve system for bodies to be filled with gaseous media, liquids, in particular for products for the rubber industry, provided with a valve body embedded in a rubber socket and a valve stem connectable with a thread to the valve body. The characteristic feature of the invention is that the valve body (4) is embedded in its full height in the rubber socket (5), on the inner wall of the throughbore (3) of the valve body (4) a connecting thread (2) is formed, while the outer wall of the valve stem (9) is also provided with a connecting thread (7) and in the inside of the valve body (4) and the threaded end of the valve stem (9) seats (8) are formed for receiving the O-ring (1).

Abstract: In a flexible hose reinforced by wire plies, at least two wire plies are provided and the wires of each wire ply are disposed in helical convolutions about the longitudinal axis of the hose.The improvement is in that the wire plies satisfy the following formula: ##EQU1## wherein: subscript b indicated the plies arranged with left hand thread,subscript j indicates the wire plies arranged with right hand thread,r.sub.b and r.sub.b are the mean radii of the wire plies,N.sub.b and N.sub.b are the number of wires in each wire ply,F.sub.b and F.sub.b are the tensile strength of the wires,.alpha..sub.b and .alpha..sub.j are the angles of lay of the respective wire plies,l stands for the number of wire plies with left hand thread,m is the number of wire plies with right hand thread.

Abstract: A reinforced "C" shaped hand-rail for use with escalators, moving pavements and the likes made of elastic material. The invented hand-rail is injection moulded from polyurethane, foamed polyurethane or other synthetic material possessing similar physical characteristics, so that at least one of its outside and inside is lamellated, the external or internal surface of the side opposite the lamellated surface is wavy conforming to the lamellae. The hand-rail is provided with reinforcing steel wire insert (1).

Abstract: An adhesive hose coupling which comprises an outer connecting element for fixing and enclosing the end of a hose to be coupled having a soul, an inner sleeve having peripheral openings in a smooth outer surface thereof and being attached from an end element, said inner sleeve with end element being adapted to provide connection for the coupling, said inner sleeve being adapted to be expanded against the soul of a hose to be coupled without appreciably restricting the flow of a flowing medium through the hose, and a space filler for disposition in a space formed between said outer connecting element, end element, and a hose to be coupled.

Abstract: The invention relates to an apparatus for the comminution of organic matters, the comminuting unit of which consists of at least one tool provided with axial and/or radial yielding holes and co-acting axially driven stamp. The essential feature of the invention is that a compacting unit (4) before the comminuting unit (5)--in respect of the direction of movement of the organic matter to be comminuted--and a feeding-precompacting unit (3) preceding the compacting unit (4) are arranged, furthermore the feeding-precompacting unit (3) is provided with driven worms (6, 7, 8), the discharge end of which is connected with the large cross sectional end of the bell-mouthed narrowing chambers (18, 19) while its reduced cross sectional end is joined to the pressure chamber (28) of the tools (20, 21).

Abstract: There is disclosed an improved apparatus for making flexible hoses comprising a means for storing and unwinding reinforcing threads needed for hose building, said means comprising a set of joinable drum storing platforms as a thread applying means capable of simultaneously applying reinforcing threads in the order of magnitude of a thousand to the flexible hose to be manufactured; at least one driving mechanism being capable of positively gripping any part of the hose and being capable of advancing or advancing and rotating the hose; optional input means for supplying heat, e.g.

Abstract: A technical hose with foam insert, expediently a maritime swimming hose for drawing-off oil, as well as to the process for the production thereof. The hose according to the invention consists of the elastic cross-linked elastomer layer containing also fibre-reinforcement, of the foam layer with closed cells arranged above said layer and assuring swimming ability, as well as of the new type of outer coating sheet.The outer coating sheet is a multi-layer system, the elementary layers are previously partially cross-linked, in their cross-section inhomogenous elastomer layers, stretched longitudinally in a given case, being interconnected and connected to the foam layer, respectively, by means of thermally and/or chemically activated adhesive layers.

Abstract: The invention relates to an elastic self-carrying bellows-body, in particular for vehicles, having been formed with ribs separated by spacings and interconnected with connecting means.The essence of the invention lies in that the thickness of the connecting means interconnecting the ribs is less on at least two opposite sides of the bellows-body, than that of the ribs and the ribs and connecting means are formed as monolithic units.

Abstract: A flexible, multilayer high-pressure hose with a diameter over 50 mm. It is suitable for conveying gases and gas-containing fluids. The hose contains a structure to vent gases and it is stable to the environment and to the material being conveyed therethrough.

Abstract: There is disclosed a process for manufacturing large-diameter, large-length hoses. The process is characterized by applying the elements required for building the hoses onto a flexible foundation lead through an advancing or through an advancing and rotating movement of same while conveying the hose along a curved course, the track of the course having the shape of a preferably closed curve, and by vulcanizing the built up hose preferably by applying electric energy.

Abstract: This invention relates to a process and equipment for the crushing of scrap rubber, particularly scrap tire. According to the invention the scrap rubber is forced through small-size openings under a pressure producing the cold yield of the rubber.

Abstract: A spring leg with load proportional limited damping for use on a vehicle, includes a telescoping shock absorber including a piston and cylinder and a load bearing air suspension connected to a gas pressure system and having the walls surrounding the air space thereof comprising an elastic jacket and two rigid walls fixed to the body and the axle gear of the vehicle wherein the binding units of the shock absorber are partly arranged in the air space of the air suspension. An auxiliary diaphragm has an inner rim fixed to the cylinder of the shock absorber and an outer rim fixed to one of the two rigid walls of the air suspension to define the auxiliary diaphragm as one of the bordering walls, of the air space of the air suspension. A pilot ring limits the outward movement of the cylinder of the telescopic hydraulic shock absorber from the air space of the air suspension and is fixed to the rigid wall bearing the outer rim of the auxiliary diaphragm.

Abstract: A flexible rubber hose has a spiral wound reinforcing core of resin bonded fibers embedded in the rubber, and a reinforcing insert, which may be woven or spiral wound, on the outer side of the helical core. The fibers are preferably glass fibers embedded in epoxy or phenolic resin.

Abstract: An elastic pipe-connecting component for pipes or pipelines or the like, comprises an elastic sleeve with flanges at each end and an annular expansion bulge in its midportion. In its undeformed condition, there is a cylindrical section on each side of the bulge, between the bulge and the portion of the component that is clamped to the pipe or pipeline. These exposed cylindrical portions are adapted to expand outwardly, to form two additional bulges, upon the imposition of pressure. To this end, they are reinforced with fibers of glass or steel or high strength synthetic, which are disposed at an angle to the axis of the component, of less than 55.degree.. A desirably long component is thus provided, from a minimum of material.

Abstract: End fitting or armature for multi-channel hoses having a positioning plate and a guiding plate extending perpendicularly to the longitudinal axis of the hose and apertured to receive hose coupling elements. Means are provided for varying the axial spacing of the plates. A resilient element is disposed between the plates, a part of which seats in a groove formed in the internal surface of the end fitting when the plates are pulled towards each other under load.

Abstract: A technique for producing flexible tubing for use in hydraulic systems employing non-combustible, force-transmitting liquids is described. An inner layer of the tube is formed from a load-carrying metal insert embedded in polychloroprene or natural rubber, which forms a good bond therewith. The exterior, liquid-contacting layers of the tube are formed from ethylene-propylene-terpolymer (EPDM) rubber, which withstands penetration by the hydraulic liquid. A good bond between the interior and exterior layers is provided by an intermediate layer formed from an EPDM-polychloroprene or EPDM-natural rubber mixture, the EPDM constituent being present in a proportion of about 50-80%. The transition layer may be embedded with a polymer-impregnated textile, either of cotton or of a synthetic substance such as rayon, polyamide or polyester.

Abstract: A coupling for reinforced hoses comprises inner and outer metal sleeves with the end of the reinforcement secured between them. The hose core and cover of elastomeric material are disposed respectively on the inner and outer sides of the reinforcement and are bonded thereto and underlie at least a portion of the inner and outer metal sleeves, respectively. The bore of the coupling is smooth and may be comprised entirely by the hose core or by a smoothly continuous inner surface of the hose core and the inner sleeve.