US2289604A

US2289604A - Silo base anchor

Info

Publication number: US2289604A
Application number: US402354A
Authority: US
Inventors: Frank J Van Cott; Leon J Van Cott
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-10-10
Filing date: 1941-07-14
Publication date: 1942-07-14
Anticipated expiration: 1959-07-14

Description

July 14,' 1942. F. J. VAN co'r'r ET AL 2,289,604

' SLO BASE ANCHORV opiginal Filed oct. 1o, 1938 @m f/mw @a Patented July 14, 1942 SILO BASE ANCHOR Frank J. Van Gott and Leon J. Van Cott, Unadilla, N. Y.

Original application October 10, 1938, Serial No. 234,334. Divided and this application July 14,

1941, Serial No. 402,354

4 Claims.

The invention relates to silo structures and particularly a base anchor device for securing the silo walls to a foundation.

Among the objects of the invention is to provide a new and improved silo base anchor which is easy and inexpensive to construct and simple to install.

Another object of the invention is to provide a new and improved silo base anchor wherein the bracket portion can be made from a single metallic strap and bent into such form that it gives relatively a maximum amount of reinforcing to the piece when in erected position.

Still anotherlobject of the invention is to provide base anchor construction which makes it unnecessary to locate tie rods in the foundation on precise centers, there being provided a tolerance in the location of the bracket on the silo which will permit diverting or bending the upper end of the tie rod so as to properly engage the bracket without sacrificing any rigidity of construction or proper amount of bracing.

With these and other objects in view, the invention consists in the construction, arrangeu ment and combination of the various parts of the device whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in the claims and illustrated in the accompanying drawing, in which:

Figure 1 is a partial elevation of the lower end of a silo in perspective.

Figure 2 is a perspective View of a portion of a silo showing one of the base anchors in place.

Figure 3 is a vertical sectional view on the line 3-3 of Figure 2.

Figure 4 is a top View partially in section on the line 4-4 of Figure 2.

Figure 5 shows a piece of strap metal prior to being bent into the form of the base anchor bracket.

This is a division of our copending case Serial No. 234,334, filed October 10, 1938, Patent No. 2,266,102, for a Silo construction.

In silo structures, two elements must be kept in mind if the device is to have a practical and widespread use. It is frequently the case that parts for construction of a silo are sold to farmers distant from places where skilled craftsmen can be employed in the erection of the silo. Consequently, farmers are called upon in frequent instances to erect the silos themselves. This is particularly true of silos made up of a plurality of staves and formed like a large barrel on end. With the means at his disposal, the farmer is frequently not equipped to precisely center tie rods in a concrete foundation and these, in large silos of 14 or more feet in diameter, might be one or two inches off center in some instances. When the ordinary means of attaching tie rods to a silo base are used, it is frequently impossible to connect the tie rods properly to brackets or other means of attachment to the silo wall itself if the rods are off center as much as two inches. Once a large foundation has been poured with the tie rods set in place slightly -off center, it becomes practically impossible to reset them in their proper places without breaking the foundation apart and repouring parts of it.

It is furthermore very necessary that silo hardware be of very simple and inexpensive conn struction. The parts are not made in great quantities and consequently, quantity production is never a factor in keeping the price at a low figure. Therefore, it becomes highly essential to make the hardware parts as inexpensive as the required safety in construction will permit and at the same time, make them so simple in form and manner of application that a skilled mechanic is not needed to install them.

As shown in the drawing, a wooden stave silo IU is mounted upon a concrete foundation I2. The silo is constructed of a plurality of individual wood staves I4 bound together by an iron hoop I6 and secured to each other by dowels inserted into the guide apertures I8.

The wall of the silo comprising the staves is secured to the foundation by means of a base anchor consisting of a tie rod 2) having a lower bent portion 22 anchored in the foundation I2. These rods are set in the foundation on proper centers when the foundation is poured. As illustrated in Figure 3, the position of the tie rod in the foundation should be outside the outer surface of the staves or silo wall and inside the outer edgey of the foundation.

The base anchor also consists of a bracket dei signated by the character 24 and a pair of wings 26 which extend diagonally outward from a central portion 28. In the embodiment of my invention chosen for the purpose of illustration, the wings extend in an upward direction outwardly from the center. It is preferred that the wings extend a distance sufficient for each to overlie at least two staves where the silo is made of separate staves.

It will be noted that the central portion 28 is substantially horizontal in erected position and that the wings 26 lie in a perpendicular plane flat against the outside wall of the silo to which they are bolted by means of bolts 30.

Intermediate portions 32 triangular in shape connect the horizontal central portion with the vertical wings. It will be noted and especially evident from an examination of Figure 5, that the intermediate portions have a line of contact with the wings and the central portion greater than the width of the strip of metal forming the bracket and it is contemplated that this additional length of contact supplies a greater reinforcement for the bracket, preventing it from being easily twisted or distorted once it has been completely formed. The central portion is provided with an aperture 34 for reception of the upper end of the tie rod 2B.

When the silo is constructed and anchored by means of the base anchors here shown, tie rods are first located on approximate centers but a substantial tolerance in the location of these centers is permitted. Then the staves are mounted in place and the hoops applied. Sometime after the first or lower set of staves has been put in place, the bracket 25 is slipped over the upper end of the tie rod so that the aperture 34 receives the tie rod. If the rod has not been properly centered, either with respect to its distance outwardly from the outer wall of the silo or circumferentially about the foundation, the top may be diverted one way or the other so that when the bracket is fastened to the walls of the silo, the wings will overlie each a plurality of staves and be secured separately to individual staves. After the wings have been bolted fast to the staves, a washer 36 is placed over the upper end of the rod and a nut 38 screwed down against the washer. The nut can then be drawn up tight, securely anchoring the bracket to the foundation.

In practice it has been found that the central portion 23 gives better service if it is tilted slightly downward at its outer edge, though not a distance substantially departing from a horizontal position. When so tilted, rain water and moisture which might collect on the central portion is drained away from the wall of the silo and prevents rusting of the bracket or rotting of the silo wall at the point of contact of the edge of the central portion with the edge of the wall of the silo.

There has thus been provided a base anchor for a silo which is simple in construction and easy to install in the eld without the aid of expert craftsmen.

Some changes may be made in the construction and arrangement of our base anchor construction wthout departing from the real spirit and purpose of our invention. We therefore intend to cover by our claims such modified forms of structure or use of mechanical equivalents as may be reasonably included within their scope.

We claim as our invention:

1. In a silo structure including a foundation and a silo mounted thereon having its base set inward from the edge of the foundation the combination of a base anchor comprising a rod anchored in the foundation between the edge thereof and the outside surface of the silo, an angular plate comprising a strip of metal having a pair of wings extending outwardly and lying flat against the outer surface of the silo, means for securing the wings to the silo, a central substantially fiat horizontal portion between said Wings having a rod aperture therein, intermediate portions connecting said Wings with said central portion, said plate being secured to the silo wall in a position wherein the rod aperture is approximately above the rod, said rod having the position of its upper end diverted from the point of contact of its lower end with the foundation where necessary for reception within said aperture, and fastening means for attaching the rod to the plate.

2. In a silo structure including a foundation and a wood stave silo mounted thereon having its base set inward from the edge of the foundation the combination of a base anchor comprising a threaded rod anchored in the foundation between the edge thereof and the outside surfaces of the staves, an angular plate comprising a single strip of metal having a pair of wings each extending outwardly and upwardly and lying flat against the outer surfaces of a plurality ol' staves, means for securing the wings to the staves, a central substantially flat horizontal portio-n between said wings having a rod aperture therein, intermediate diagonally-bent portions connecting said wings with said central portion, said plate being secured to the silo wall in a position approximately centering the rod aperture over the rod, said rod having the position oi' its upper end diverted from the point of contact of its lower end with the foundation where necessary for reception within said aperture, and fastening means for attaching the rod to the plate and pulling said plate downwardly toward the foundation, and a reinforcing washer between the nut and the central portion extending from edge to edge of said central portion.

3. A silo base anchor for fastening silo walls to a foundation comprising a bracket including a single metallic strap shaped substantially in the form of a V wherein side wings extend diagonally outward and when in erected position have the faces thereof lying in a plane parallel to the wall of a silo, a central flat portion when erected having a position substantially perpendicular to the wall of the silo, and an intermediate flat strip at each side triangular in shape connected at one edge to the adjacent end of the central portion and at another edge to the adjalent end of the side wing, attaching means for securing the wings to the silo and anchoring means for securing said centra-1 portion to the foundation.

4. In a silo structure a silo wall, a foundation, and base anchors at spaced points along said wall each comprising a strap `and a tie rod, said straps having their ends bolted to said wall and their central portions twisted to a plane at Vsubstantially right angles to the surface of said Wall, said central portions having perforations therein, said tie rods having their lower ends imbedded in the foundation and their upper ends threaded and extending through said perforations, and nuts on said threaded ends.

FRANK J. vAN COTT. LEON J. VAN corr.