CA2350650A1

CA2350650A1 - External mold for concrete post

Info

Publication number: CA2350650A1
Application number: CA002350650A
Authority: CA
Inventors: John Mulleady
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-20
Filing date: 2001-06-20
Publication date: 2002-12-20
Also published as: WO2002102561A3; WO2002102561A2; CA2482250A1

Abstract

In a method to cast concrete posts and to leave the molds in which the posts are cast on the posts to act reinforcing and also in this invention provision is made so that extra reinforcing may be added to the posts and also posts can be provided with a hollow core so that excess moisture can exit the post.

Description

This invention relates to a new method to make concrete posts and particularly for fence use. There are a couple of styles of posts in common use and this invention is an improvement on both. Square wooden posts are usual in wooden fences but it is not a must and alternatives will have to be found.
It is no use waiting to see who will get to cut the last tree down but demand compels that less and less wood of suitable sustainable quality is available each year so that the diminishing product is soaked in chemicals which is unfortunate for the environment and still the posts only last a fraction of the life of real wood anyway.
Concrete posts with internal reinforcing have been in use in many jurisdictions for many years and have proved very successful but exposed concrete can eventually weather and when moisture reaches the steel failure is rapid.
My method of casting posts is very unique and efficient and requires a much less work environment, where materials have to be stored and processed, used molds have to be stripped and cleaned to be reused. A lot of labour and damage is involved in doing this.
Reinforcing applied to the outside of the post is more efficient and protective and pro r~~ta a lot more effective.
In a drawing in section which illustrates embodiments of the invention it shows a Mold 1 in a vertical position and located above the Mold 1 is a fresh concrete Container 2 with an exit pipe leading down into the Mold 1 and vertically passing through the concrete and Container 2 is a lowering Pipe 3 of predetermined length and diameter and the bottom end of this lowering Pipe 3 is threaded on the bottom outside surface, to be closed with a metal threaded Cap 4 and this Cap 4 has an extra large selvage around the upper outer rim which allows the bottom of the Cap 4 but not the selvage to pass through a hole provided in a metal Disc 5 which is a slightly inverted cone shape and the diameter of this Disc 5 is a little less than the inside diameter of the Mold 1 and attached and around the upper surface of the Disc 5 is a rubber gasket 6 that is a little wider than the inside walll of the Mold 1 which causes the gasket 6 to lean upward and outward on the inside wall of the Mold 1 and having the effect that when the lowering Pipe 3 is activated downward the fresh concrete follows until the Disc 5 reaches the bottom Selvage 7 circling the bottom inside edge of the Mold 1. The Cap 4 now turned in the appropriate direction will release the lowering Pipe 3 so that it can be retrieved upward depositing the fresh concrete around a reinforcing Bar 8 or a pliable Tube 9 whichever might have been inserted into the lowering Pipe 3 at the beginning of the process and the purpose of the reinforcing Bar 8 is that additional strength might be required and the pliable Tube 9 so that it can be retrieved so as to leave a hollow core in the Post 10.
A tear off Portion 11 provided on the Cap 4 to expose the interior.

Claims

1. Is a method to cast pasts from concrete and the molds in which they are cast are to be left on the posts as reinforcing.

2. A hollow core created in concrete posts as defined in Claim 1 in which excess moisture can escape.

3. A method to introduce extra reinforcing into concrete posts as defined in Claims 1 and 2.

4. A claim in which when viewed in cross section the molds as defined in 1, 2, and 3 may be any shape or dimension.

5. The method by which concrete posts as defined in Claims 1, 2, 3 and 4 are manufactured by having a fresh concrete container With an exit pipe suspended over a vertical mold as defined in Claims 1 and 4 and a lowering pipe of predetermined length and diameter passes vertically through the concrete container and into the mold as defined in Claims 1 and 4 and the bottom end of the lowering pipe is threaded on the outside surface so it can be closed by a threaded cap and this cap has an extra large selvage around the upper outer rim which allows the bottom of the cap to pass but not the selvage to pass through a hole provided in a metal disc which is a slightly inverted cone shape and the diameter of the disc is a little less than the inside diameter of the Mold as defined in Claims 1 and 4 and attached to and around the upper surface of the Disc is a rubber gasket that is a little wider than the inside surface of the Mold as defined in Claims 1 and 4 which causes the Gasket to lean upward on the inside surface of the Mold as defined in Claims 1 and 4 and having the effect that when the lowering pipe is activated downward the fresh concrete follows it until the Disc reaches the bottom selvage circling the bottom inside edge of the mold as defined in Claims 1 and 4 the Cap now turned in the appropriate direction will release the lowering pipe so that it can be retrieved upward depositing the fresh concrete around a reinforcing bar or pliable tube whichever might have been inserted into the lowering pipe at the beginning of the process and the purpose of the reinforcing bar is that additional strength might be required and the pliable tube so that retrieved later it leaves a hollow core in the Post as defined in Claims 1, 2, 3 and 4 to allow the exit of surplus moisture.

6. A claim in which the Cap as defined in Claim 5 has a tear-off portion to expose the interior.