Abstract: A pulling device for a roll shaft for roller blinds or screens comprises a cord pulley situated in a housing provided with a passage opening for cord parts. A clamp is disposed in a chamber in said housing and about the said cord parts, said clamp becoming operative when turning the cord pulley by the weight of the blind or screen.

Abstract: The present disclosure is directed to a method of externally sealing underground sewage system joints against entry of ground water to the system and which requires placing a continuous elastomeric band about a first one of the joint elements prior to its interconnection with the adjacent joint element, then interconnecting the adjacent element to said first element, and thereafter positioning the elastomeric band so that it substantially equally overlies the joint between said first and second elements with one-half of the band width overlying each element.

Abstract: A branch pipe part is provided with a collar and a downwardly extending skirt, the free end of the branch pipe part comprising a first outwardly extending projection and the lower portion of said pipe part being provided with longitudinal incisions allowing deformation of said lower portion.The outer wall of the space formed by collar and skirt may have apertures for passing a lip of a sealing member. In order to avoid further deformation of the lower portion with incisions after connection with a main conduit, a deformation-preventing bush is pushed into the lower portion and locked by means of a cam.For decreasing the distance between the outer side of a main conduit connected with the branch pipe part, the skirt may be provided with a removable adapting ring, an intermediate part thereof decreasing the distance between the outer side of the main conduit and the free lower end of the skirt.

Abstract: An adhesively joined pipe connection comprises a male pipe part and a female pipe part of fiber reinforced plastics, both being provided with a foam plastic insulating layer. The foam plastic layer extends to the front end of the receiving portion of the female pipe part, a heating resistance foil being fixed to the outer side of said receiving portion by means of an adhesive. A sealing sleeve engages sealingly the outer side of tubular casings of the foam plastic layers upon the female and male pipe parts. Connecting wires connected with heating foil extend through the foam plastic layer.A female pipe part of fiber reinforced plastics provided with a foam plastic layer is extending to the free end of a receiving portion and a heating resistance foil fixed to the outer side of said receiving portion. Wires connected to the resistance foil extend through the foam plastic layer.

Abstract: A plastic coupling pipe part for connecting corrugated plastic pipe comprises abutment projections and a radially resilient displaceable lip, carrying an inwardly directed cam. The lip is surrounded by openings delimited by a rectangular incision in the plastic pipe. The transition part connecting the lip with the pipe wall has a smaller width than the end edge of the lip.In a pipe connection with such a coupling pipe part the coupling cam engages a flank of a wave valley of a corrugated pipe.

Abstract: A method and device for cooling molds circulating in a horizontal plane, in which siphon action is used to pass cooling liquid from a top gutter through the molds. In this way the whole cooling system is becoming constructively simplified, such that production speeds can be increased, with the consequent greater length of the cooling system, but without its becoming unduly complicated. This effect is realized irrespective of the nature of the machine or the number of molds.Method and device are especially advantageous when applied with the manufacture of plastics tube, more particularly yet with the manufacture of plastic corrugated tube.

Abstract: A plastic bag provided with a filling valve and a gas permeable dust filtering pocket opposite said valve, allowing gas to escape from the interior of the bag.A disconnectable spot adhesive connection exists between a layer of said pocket and the adjacent bag wall parts opposite a corner flap. An additional adhesive or welding connection may be present near the free end of the pocket for connecting the layer with the bottom flaps.

Abstract: An apparatus for installing a sealing ring in a groove chamber of a socket by impressing said sealing ring comprising a sealing ring impression member and sealing ring retaining means for maintaining the sealing ring in the impressed state said retaining means comprising two axis with flat sides.

Abstract: My invention is directed to portable pneumatic nail driving devices for working with large nails ranging in size from 30 to 90 penny which are fed from a primary chute through a transfer chute to a nail driving barrel carried by a base frame. Upstanding from the base are guides over which slides a cradle to which a pneumatic gun having a chisel is carried to that the chisel enters the barrel after a nail has been introduced to drive the nail. Such apparatus is used in the construction of board roads in swamps incident to oil field work.

Abstract: An apparatus for salvaging nailed boards employed in the building of temporary board roads over marsh land. The boards have nails extending from one side thereof which must be bent flush and the boards stacked in bundles for reuse in laying a new board road. The apparatus has at its front end a set of board receiving rolls with their axes along the major axis of the machine for receiving the boards with their major axis transversely of the machine on the rolls with the nail extending upwardly. Co-extensive with the board receiving rolls for advancing the boards edgewise from the front to the rear of the machine are pivoted dog pushers. In advance of the nail bending roll there is provided a pair of barriers for maintaining a single vertical layer of boards. A pair of endless chains are positioned to engage and move boards edgewise rearwardly from the board receiving rolls through the machine.

Abstract: Method for connecting thin-walled plastic tubes by heat welding wherein a normal plastic tube is heated and provided with a funnel-shaped widening and another tube is heated and provided with a conical narrowing, the narrowing being pushed into the funnel-shaped widening so that these parts are heatsealed to each other.

Abstract: The present disclosure is directed for use with a camera having an around the neck support strap connected to rings at each end of the camera; a camera tie down/quick release strap is adapted to hold the camera against the chest of the wearer in a carrying position and which permits quick selective eye level positioning of the camera in a shooting position without detaching the camera from being secured to the body. It is provided with a U-shaped strap having camera attaching means at each of its ends and being adapted to pass over and beneath the camera without interferring with or blocking the camera lens opening. A body tie down quick release tail strap is carried by the loop portion of said U-shaped strap foldable back upon itself, and means for attaching and releaseing the foldable back upon itself tail portion of the quick release strap provides the quick release and the body tie down.

Abstract: The present disclosure is directed to a modular floor unit and method of making same. The module is made up of a plurality of lengths of tongue and groove strip flooring having a flat smooth finish on one side and a plurality of channel recesses on the other side. The tongue and groove strips are all of the same length and have the tongue of one strip full into the groove of an adjacent strip. The unfinished side is glued to a plywood back the grain of which is at a right angle to the length of the strips. After gluing the plywood is stapled to the back of the strips.

Abstract: The present disclosure is directed to an apparatus for removing or replacing ships underwater parts such as a screw from the propulsion shaft or the rudder of a ship in a dry dock and transporting it from the ship to a work area. It has a mobile vehicular frame and a pair of spaced apart main cylinder ram lifts pivoted at their base to the vehicular frame, one lying to each side of the ships part either screw or rudder to be removed. The part receiving and cradling apparatus is mounted at the upper ends of said main cylinder ram lifts. Auxiliary tilt cylinders and rams each having one end pivoted to said vehicular frame and the other end pivotally connected to tilt the main cylinder and ram lifts toward and away from the ships part to be removed from or replaced on the ship.

Abstract: A socket of a thermoplastic pipe is provided with an internal groove by subjecting the tube to an upsetting action and simultaneously inflating the tube by an inner pressure. Subsequently a moulding ring is expanded and the tube is shrunk onto the expanded ring by cooling. Before shrinkage the inner diameter of the bottom of the groove is at least equal and preferably greater than the outer diameter of the moulding ring in expanded form.

Abstract: The present disclosure is directed to a krill peeling machine having a bank or plurality of banks of pairs of peeling rolls having peeling nips therebetween and with their major axes transverse to the path of flow of a supply of krill to be peeled through the machine. There are means for oscillating the peeling rolls causing the nips to engage and peel the krill to provide a tail meat with shell removed. The bank of peeling rolls are positioned at a declination of from 20.degree. to 30.degree. to the horizontal, each bank having a loading and discharge end. A krill leveling means is situated at the loading end of each peeling bank for distributing the krill substantially evenly across the peeling nips of the transversely disposed rollers to provide a layer of krill in contact with the peeling nips.

Abstract: A composition of polyvinylchloride containing the usual additives and a plate out preventing, chemically or physically acting drying agent. The drying agent is preferably an expanded and finely ground aluminiumsilicate, having a high oil absorption and water absorption and preferably low amounts of earth alkaline metals. The plate out preventing drying agent is incorporated in a normal additive composition in order to avoid handling of voluminous masses of drying agent. This incorporation is executed by mixing with a mixture of additives or during the chemical reaction for preparing the additive composition.

Abstract: A stabilizing composition consisting of substituted alpha- or beta-naphthindoles, benzoylated or not benzoylated, and combined with organic polyimines such as those of formula 1 of the formulae sheet, in which R is alkyl or dialkyl, ethoxylated alkylmercaptans with 2.varies.8 ethoxy groups and (metal) halides of barium, calcium, lithium, zinc or aluminum, have a strong thermostabilizing effect on chlorine containing thermoplastics, especially on polyvinyl chloride, both homo-M and S polymers thereof, and on polyvinylidene chloride.

Abstract: The present disclosure is directed to a centering device for shaping tools for extrusion presses, wherein an outer mandrel together with an inner mandrel define a through gap for plastic extrusion material which device has a plurality of centering members supported on the outer mandrel which are distributed over the periphery of a radial plane and which are adjustable in the radial direction and which are constructed in the form of push rods guided for radial displacement. Each push rod (6,106) has associated therewith an individually adjustable drive, an adjustable lever (7,107) supported for pivoting on the outer mandrel and which are actuable by means of a tightening device (8,108) and form a transmission gear for applying the tightening force.

Abstract: The present disclosure is directed to a biomass gas producer having a tiltable gassifier in which the gassifier for performing endothermic chemical reactions of solid material having combustible gas forming and liquifiable constituants has a top charging end and an ash discharge end. A platform support means is provided for the gassifier. An adjustable support means is carried by the platform for supporting the gassifier for tilting from a substantially vertical endothermic reaction or firing mode to a low height inclined charging mode for introducing the material to be fired. A tilt means is connected to the adjustable support means to incrementally tilt the major axis of the gassifier between a firing mode position and a loading and waste discharge mode position. The gassifier also has means for directing the burnable gas produced therein to operate a prime mover for example a boiler, internal combustion equipment or turbine to drive power take off shafts to perform useful mechanical tasks.