This invention relates to a fence post form and insert assembly for casting fence posts from concrete in the field. In particular, the posts contemplated are massive tapered posts whose great weight makes it unnecessary to plant the posts in the ground. Instead, they are set on the surface, which avoids the cost and difficulty of digging post holes, and enables one to change the fence perimeter merely by moving the posts.
The traditional solution is to run multiple forms for making single posts.
An object of the invention is to simplify the construction of concrete fence posts and to enable one to make multiple posts at one time from a single mold.
These and other objects are attained by a fence post form and insert assembly as described below.
In the accompanying drawings,
a is a top plan view of a base assembly forming part of the invention,
b is a front elevational view thereof,
c is a right side view thereof;
a if a top plan view of a pivot side assembly which mounts on the base assembly,
b is a front elevational view thereof,
c is a right side view thereof;
a if a top plan view of the base assembly with three forms installed,
b is a front elevational view thereof,
c is a right side view thereof;
a if a top plan view of the assembly of
b is a front elevational view thereof,
c is a right side view thereof;
a if a top plan view of the insert assembly alone,
b is a front elevational view thereof,
c is a right side view thereof;
a if a top plan view of the frame of the insert assembly,
b is a front elevational view thereof,
c is a right side view thereof;
a if a top plan view of a single insert alone,
b is a front elevational view thereof,
c is a right side view thereof;
a if a top plan view of a single form alone,
b is a front elevational view thereof,
c is a right side view thereof;
a - 9g are elevational views of assorted pins for forming apertures in the posts;
a - 10f are details of form structure; and
a and 11b are front and side elevations of a hoisting bar for the device.
A fence post form insert assembly embodying the invention is shown fully assembled in
a, 3b, 3c show three forms 20 inserted into the base assembly. The forms are preferably identical, and their equally spaced longitudinal axes lie on a common center plane. A detail of one of the forms is shown in
a, 5b and 5c show an insert assembly (the constituent parts of which are illustrated in
In use, the form and base assembly is closed by raising and securing the gates. To form apertures through the fence posts for fence wire, pins (shown in detail in
Now, with the large ends of the forms oriented upward, and a predetermined volume of concrete is poured into the forms. If heavy solid posts are wanted (for example to make gate or corner posts), the forms are filled completely. To make lighter hollow posts, the forms are filled part way—the volume required is easily determined—and the insert assembly is lowered onto the frame, so the individual inserts enter concentrically into the forms, displacing concrete upward around the inserts.
In either case, once the concrete has set, the device is inverted (by lifting on the hoisting bar 40 shown in
Since the invention is subject to modifications and variations, it is intended that the foregoing description and the accompanying drawings shall be interpreted as only illustrative of the invention defined by the following claims.
This application claims benefit of provisional application 61/170933, filed Apr. 20, 2009.
Number | Date | Country | |
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61170933 | Apr 2009 | US |