Abstract:
A carriage (1) is guided coaxially to the axis (11) of a pipe (9) to be repaired by two sets (2, 3) of sprung rollers (4, 5). The carriage supports a drive motor (28), on the drive shaft (29, 30) of which is fixed a distributor means in the form of rollers (41). Coating material, for example a pressure setting plastic, is applied via a supply pipe (45) to the underside of the pipe wall (8) and is distributed by the turning rollers (41) over the circumference. In this way damaged sewer pipes can be correctly coated with small effort.
Abstract:
The method of coating viscous material onto coaxial bores of different diameters, that includes:(a) inserting an expansible and contractible element into said bores,(b) locating viscous material in said bores to be be retracted by said element,(c) retracting said element to effect retraction of said viscous material, and also controlling the diameter of said element, including decreasing its diameter as the element passes into a bore of reduced diameter, so as to spread said viscous material in the form of a tubular layer onto said bores, and while the element passes through the spread tubular layer.
Abstract:
Apparatus for coating an internal wall of a curved conduit (50) with a layer of protective material, characterized in that it comprises a guide means (46, 46a), a longitudinally flexible member (44) which is transversely substantially rigid associated with the guide means, means for mounting a coating means (62) adjacent a first end of the flexible member for incremental rotation with the flexible member, a drive means (28) for driving the flexible member relative to a curved conduit (50) to be coated, so that the coating means can enter the curved conduit in use and so that the coating means can deposit a strip of protective material longitudinally of the conduit, and means (32, 34, 36) acting on the flexible member for automatically stepping the flexible member and consequently the coating means by a rotational increment after the coating means has completed a traverse of the conduit and for automatically reversing the drive means so that the apparatus deposits a strip of protective material adjacent the first laid strip.
Abstract:
Apparatus for coating selected portions of the troughs of a corrugated pipe within an adhesive includes a support disposed within the pipe with a reservoir containing the adhesive disposed on the support. A pump, including a spout, is utilized for supplying the adhesive from the reservoir to a trough of the pipe. A rotatable applicator is supported on the support and contacts the trough of the pipe. The applicator itself is sized so as to fit within the trough, and contacts the adhesive in the trough and spreads the adhesive in the trough upon rotation. A trough shield, supported by the support and disposed in the path of rotation of the applicator, is utilized to prevent the applicator from contacting selected portions of the trough. A locator head is also disposed on the support and provides a way for aligning the spout, the applicator, and the trough shield with the trough.
Abstract:
A method and apparatus for reinforcing and repairing piping are disclosed for forming a film on the inside of a pipe line. The apparatus includes a film forming device having spaced radially extending front and rear walls which is inserted within the pipe line. When so inserted, the apparatus and the inside surface of the pipe line define an annular space into which film forming material is introduced. This annular space can be used to straddle a cracked portion of the pipe line, a joint or other inadequately sealed areas in which leakage may occur. A film adjusting device comprising a rotary driving element and a rotary film adjusting element are provided and are flexibly connected to the film forming device. The rotary drive device includes a motor and spaced front and rear discs each of which is attached to a plurality of outwardly extending fragments. A hauling device is provided for moving both the film forming device and film adjusting device within the pipe line and an inspection device is provided to assist an operator in locating areas to which the film forming material must be carefully applied. The method comprises inserting the devices within a pipe line, moving them through the pipe line, applying film forming material to the inner surface of the pipe line and stopping the devices at potential leakage portions to properly reinforce these portions with film material.
Abstract:
An apparatus for painting the inner surface of the welded side seam of a can body with its top and bottom open. The apparatus uses an applicator roll having an annular projection with an acute vertical angle formed in the middle and both edges of the outer periphery.
Abstract:
This is an apparatus for coating the inside of a pipe with a wear-resistant material and is more specifically concerned with an improved production machine for producing large size pipe.
Abstract:
An apparatus for applying a protective coating to the inside of the welded seam of cans. When fabricating cans which are provided at their inner surface with a protective coating it is necessary, following the welding operation, to apply to the region of the welding seam the then missing part of the protective coating. Prior techniques were unable to achieve any optimum application of the seam-coating which would reliably cover the welded seam. If the fabricated cans are particularly intended for use for canned foods this then is dangerous to the health of the user. With the apparatus of the invention the protective coating is applied by means of a driven applicator roll to the welded seam. By suitably selecting the outer or jacket surface of the roll and a scraper as well as the rotational speed of the roll it is possible to optimize application of the protective coating.
Abstract:
Apparatus for treating the internal wall of a pipeline by scraping, cleaning, painting or the like, including an elongated pig, a mounting assembly connected to the trailing end of the pig, rollers movably supported on the mounting assembly for rotational movement around the longitudinal axis of the pig, for radial movement relative to the longitudinal axis of the pig, and for canting movement in which the rotational axis of each roller can be selectively skewed with respect to a chord of the diametric cross-section of a pipeline in which the apparatus is located, with the longitudinal axis of the pig coinciding with the longitudinal axis of the pipeline. Resilient biasing means is provided for constantly urging the rollers radially outwardly with respect to the longitudinal axis of the pig. A plurality of spaced surface treating elements are rotatably carried on the mounting assembly for rotation about the longitudinal axis of the pig.
Abstract:
A self-running and automatic cleaning-coating machine for working the internal wall of a pipe comprising a travel-driving truck, a motor-placing truck a paint-supplying truck and a working truck wherein these trucks are flexibly coupled to one another and including operation mechanisms which is self-running to a required position and automatically operated to clean and coat the internal wall.