US1111909A - Method of manufacturing fence-posts. - Google Patents

Description

A. A. KRAMER.

METHOD OF MANUFACTURING FENCE POSTS. APPLIGATION FILED MAY 10, 1912.

1, 1 1 1,909. Patented Sept. 29, 1914.

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ANDREW A. KRAMER, on Kansas cI'rY, KANSAS.

METHOD or ivmnurncrunine runes-Poems.

Specification of Letters Patent.

. Patented Sept. 29, 1914.

Application filed. May 10, 1912. Serial No. 696,475. i

erence being had to the accompanying draw ings, and to the letters and figures of refer ence marked thereon, which form a part of this specification.

My invention relates to a methodof manufacturing concrete fence posts, and has for its object to provide a method of manufacture whereby posts may be molded quickly and cheaply, and adapted, during the molding process, for receiving wire fasteners. In accomplishing these, and otherobjects, which will be disclosed in the following description, I have provided the improved details of structure hereinafter described and illustrated in the accompanying drawings, wherein: i

Figure I is a view of a post, constructed according to my invention, showing fence wires in place, and showing part of the casing broken away to disclose the concrete contained therein. Fig. II is an enlarged vertical section of parts of the post, showing the reinforcing wires, and fastener opening,

and showing one of the fasteners in place and holding a fence wire. Fig. III is a vertical section of the mold in pouring position, with reinforcing wires in place. Fig. IV is a longitudinal section of a portion of the mold, showing the means for forming an aperture for receiving a wire fastening member. Fig. V is a detail View of a preferred form of fastening member. Fig. VI is a view of a number of nested molds.

Referring more in detail to the parts 1 designates a mold or form which may be composed of sheet metal, stiff paper, or other material which will hold its shape while concrete is poured thereinto and while the concrete is becoming set or hardened. The form is tapered at one end and provided with apertures 2, arranged in pairs, at opposite sides of the form, so that a spike or rod 3 may be projected through the apertures and extended across the interior of the form, so that concrete may be poured therearound. There may be as many pairs of the apertures 2 asmay be necessary to carry a I desired number of fence Wires and the apertures may be spaced longitudinally on the post to correspond with the spacing desired for the fence wires.

{t designates reinforcing rods, or wires,

which extend longitudinally through the center of the form, or mold, and are woven over the spikes 3 so that they follow a tortuous path throughout the length of the postand are held in the center of the form.

In order to prevent the reinforcing members frol'nmoving. laterally' along the spikes priorto the pouring of the concrete, I make the form apertures 2 of sufficient diameter to receive the tubular members 5 which are adapted to surround the spikes 8, so that when thelatter have been positioned the tubes may be moved into the form from 013- pcsite sides thereof so that their inner ends w ll abut against the relnforcmg members and move thelatter to the center of the form.

. In actual practice, I provide a frame, (not shown) within which a number of forms 1 may be mounted, with their smaller ends pointed downwardly. Viththe forms in this position and with means provided for stopping the lower ends of the forms, the reinforcing wires 4 are placed within the forms and the spikes 3 projected throughthe apertures 2 that they extend alternately on opposite sides of the reinforcing members. After-the spikes are in place, the tubes 5 are placed on the opposite ends of the spikes and moved through the form apertures to center the reinforcing members. With the parts so arranged, concrete is poured into the large upper ends of the forms so that it surrounds the reinforcing members and spikes and fills the form. The material is then left to harden or set, and at the proper time, or before the material has completely hardened, the tubes and spikes 3 are withdrawn to leave the transverse apertures 6 through which wire fastening members may be extended when the post is finally erected.

hen the post is set in the ground the fence wires 7 are strung therealong and fastener members 8, preferably comprising staples having expanded heads 9, which projectovcr the fence strands and through the apertures 6, the staples or fasteners being of such length that their free ends will project through the post and may be bent back to form keepers l0.

It is apparent that the forms, or molds, may be made up at the factory and shipped to the place where they are to be used, the tapered construction enabling them to be nested as illustrated in Fig. VI, so that they may be compactly arranged for shipping or storing. The forms may then be set up near the place they are to be used and filled with concrete, as many forms as are to be used'being filled at the same time if necessary, as the user does not need to empty the form after one post has been made in order to use it for another post. i

By having the shell or form used vas part of the post, the material does not need. to be left to become hardened as long as if the post were required to carry itself, as the form will hold the material, whereas if the form were removed the material might not have suflicient strength to retain its shape.

It is apparent that any material having suiiicient body to hold its shape While the concrete is being poured and set will answer for the form, as even should the shell crumble or rust within a short time after it is set in the ground the post would not be materially affected, as the wasting of the shell would merely expose the solid reinforced p Having thus described my invention, what Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I claim as new therein and desire to secure by Letters-Patent is 1. The method of manufacturing fence posts consisting in providing a form, having openings therein, arranging reinforcing members longitudinally within the form, projecting spikes through openings in the form and alternately on opposite sides of the reinforcing members, filling the form with concrete to embed the reinforcing members, withdrawing the spikes before the concrete has set, and allowing the concrete to set, whereby the form is made an integral part of the post.

2. The method of manufacturing fence posts consisting in providing a form having openings therein, arranging reinforcii'lg within the form, projecting spikes through the form openings, projecting tubular members over the spikes and against the reinforcing to center the latter, filling the form with concrete, removing the tubular members and spikes before the concrete has set, and allowing the concrete to set whereby the form is made an integral part of the post.

In testimony whereof I afiix my signature in presence of two witnesses.

ANDREW A. KRAMER.

Witnesses:

W. F. ROGERS, F. W. S'rosnnno.

Patents,

Washington, D. C.

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