Method and apparatus for applying a coating material to a pipe
AssigneeShaw Industries Ltd.
InventorJames J. Stockman
Life of this patent
Estimating the term…
Abstract
The invention relates to a method and apparatus for wrapping pipe with a cementatious material wherein the wrapping strip is provided with notches along the edges thereof which interlock along the wrapping seam about the pipe to provide an even coating. Where reinforcing mesh is provided within the coating material the mesh also overlaps at the wrapping seam to give greater strength to the coating. Compacting of the coating material is accomplished after the pipe is wrapped by means of a vibrating shoe.
Claims14
An apparatus for wrapping pipe comprising:
- conveyor means for rotating and advancing the pipe in relation to its longitudinal axis;
- a frame positionable at an angle with respect to the conveyor means;
- a main endless belt supported by the frame upon which a continuous wrapping material is conveyed to the pipe, said wrapping material comprising a continuous carrier tape in contact with the main belt and a layer of coating material on the carrier tape;
- at least one endless notching belt positioned on and near one edge of the main belt and which is driven thereby;
- a roller positioned above the belts and having at least one notching disk for making at least one notch in the coating material opposite from the notch or notches made in the coating material by the notching belt or belts, so that said notches interlockingly overlap at the seam of the wrapped pipe, said roller being positioned to reduce the thickness of the coating material to that desired;
- and
- a vibrating shoe positioned about the wrapped pipe for compacting the coating material.
A method for wrapping pipe with a strip of coating material, comprising:
- rotating and advancing the pipe in relation to its longitudinal axis;
- conveying a continuous wrapping material to the pipe by means of a main endless belt supported by a frame positionable at an angle with respect to the rotating and advancing pipe, said wrapping material comprising a continuous carrier tape in contact with the main belt and a layer of coating material on the carrier tape;
- providing notching at the diagonally opposite edges of the coating strip by means of at least one endless notching belt positioned on and near one edge of the main belt and which is driven thereby, and by means of a roller positioned above the belts having at least one notching disk for making at least one notch in the coating material opposite from the notch or notches made in the coating material by the notching belt or belts, so that said notches provide an interlocking of the coating at the seam formed by wrapping the strip spirally about the pipe, said roller being positioned to reduce the thickness of the coating material to that desired;
- and
- vibrationally compacting the coating material immediately after the strip is wrapped about the pipe.
A method as claimed in claim 14, wherein the coating material has at least one strip of a continuous mesh reinforcing material positioned therein so that such reinforcing material overlaps at the seam, said notching belt or belts being positioned below the reinforcing mesh and said roller being positioned above the reinforcing mesh.
Dependencies are inferred from the claim text.