US1225182A - Mold for tubular articles. - Google Patents

Description

E. A. SCHUETTIG.

MOLD FOR TUBULAR ARTICLES. APPLICATION FILED AUG.21.1916.

M325, 12 Patented May 8,1917.

2 SHEETSSHEET I.

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MOLD FOB TUBULAR ARTICLES.

Specification of Letters Patent.

Patented May 8, 12117.

Application filed August 21, 1916. Serial No. 116,077.

To all whom it may concern:

Be it known that I, EMIL A. SOHU'ETTIG, a citizen of the United States, residing at Poteet, in the county of Atascosa and State of Texas, have invented certain new and useful Improvements in Molds for Tubular Articles; andI do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in molds and more particularly to a knock-down mold for forming tubular articles from cement or similar plastic material, and this type of mold is so constructed that it is especially adapted for forming concrete tubular casings for dug wells, and the article may be formed therein and readily removed therefrom without danger of injuring the same in any manner.

Another object of this invention is to provide a new and improved mold of this character which is adapted to form a tubular article with opposite grooves at the top and bottom edges of the same so that the articles formed thereby may be connected with each other when in use.

A further object of the invention is to provide a device of this character which is simple and durable in construction, inexpensive to manufacture, and one which is well adapted to the purpose for which it is designed.

Vith these and other objects in View, my invention consists of the novel features of construction, and the combination and arrangement of parts which will be hereinafter more particularly described and claimed.

In the accompanying drawings:

Figure 1 is a side elevation of my improvide mold assembled;

Fig. 2 is a top plan view of the same;

Fig. 3 is a horizontal section taken on the line 33 of Fig. 1;

Fig. l is a vertical section taken on the line 4l-A of Fig. 2;

Fig. 5 is a plan view showing the different sections of my mold disassembled; and,

Fig. 6 is a central vertical section of the article formed by this mold.

In describing my invention I shall refer to the drawings in which similar reference characters designate corresponding parts throughout the several views and in which the numeral 1 designates the inner wall or core of my new and improved mold which comprises four sections, each of which is designated by the numeral 2, that are arouate in shape and are adapted to be placed end to end to form the circular inner wall or core as clearly shown in Figs. 2 and 3- of the drawings. These four sections 2 are formed of any desired material preferably longitudinally extending wooden strips secured together and covered by a metallic protecting cover 3 which extends over the outer surface of the same. Positioned between two of the ends of the sections 2 which are designated by the numerals A and 5 is a spacing strip 6 which is adapted to be securely held therein owing to the fact that the ends A and 5 are undercut and the sides of the spacing strip are dove-tail so as to easily slide therein and be held in position when the sections are assembled. One end of the strip 6 which is designated by the numeral 7 projects above the upper edge of the sections so that the strip may be grasped to remove the same from position when it is desired to knock down the inner wall. Upon removal of this strip, the sections may be moved inwardly a sufficient distance whereupon they may be removed from the molded article.

Secured to the inner surface of each of the sections 2 are bars or boards 8 which are disposed adjacent the top and bottom of the same and have their outer edges 9 curved arcuately to conform to the inner surface of said sections and said bars are slightly larger than the sections and project therefrom at either end. These projecting portions of the bars 9 which are designated by the numeral 10 will overlap with the projecting portions of the bars of the adjacent sections, and the said overlapped ends are adapted to be secured together by fastening members 11 which are positioned there through. Any desired type of fastening members may be used, preferably bolts as clearly shown in Figs. 3 and A of the draw ings. By this construction, it will be obvious that when the sections of the inner wall or core are placed end to end and the spacing strip 6 is placed therebetween, the ends of the bars 8 will overlap, and upon placing of the fastening members through said ends, the sections will be securely held in position. When it is desired to remove the sections, the fastening members are removed and the spacing strip 6 is withdrawn, whereupon the same are easily removed.

The outer wall of my new and improved mold which is designated by the numeral 12 comprises a plurality of arcuate sections placed end to end, these sections being of unequal size, comprise a pair of larger sections 13 which have one of their ends disposed adjacent each other and a smaller section 14 interposed between the opposite ends of the larger sections. These arcuate sections are formed of the same material as the sections of the core are made of and have their inner surfaces covered with a metal protective covering 15.

Secured to the other surface of the larger sections 13 and disposed adjacent the top and bottom of the same, are pairs of bars or boards 16, which are securely fastened at their inner overlapping ends 17 to each other at a point intermediate the ends of said sections while the opposite ends 18 of the same project past the ends of the sec tions to which these bars are secured and are adapted to overlap the projecting ends of the bars of the adjacent sections. The smaller section 1 1 is also provided with single bars 19 adjacent the top and bottom of the same, which have projecting ends 20 adapted to overlap the projecting ends 18 of the bars 16. These overlapping projecting ends are adapted to be secured together by removable fastening members 21 as clearly shown in Fig. 3 of the drawings.

By this means, it will be obvious that when the sections of the outer wall of this mold are assembled, the ends of the bars secured thereto will overlap and upon positioning of the fastening members 21 therethrough, these sections will be securely held in position. Upon the removal of the fastening members, the sections may be easily separated and the outer wall removed from the molded article.

Secured to the inner surface of the sections 13 and 14, at the bottom of the same, is a shoulder 22 which is when the sections are assembled, adapted to form a ring projecting inwardly from the inner surface of the outer wall at the bottom of the same. This ring is used in forming a groove in the bottom edge of the molded article, which is adapted to connect the same with an adjoining section. The inner wall or casing 1 is also provided with a ring 23 which is,

however, not secured thereto and is adapted to surround the outer surface of the same at its top only when the mold has been filled with material up to a short distance below this point, whereupon this ring 23 is placed therein and the mold filled, which positioning will form the groove in the upper end of the molded article. By the positioning of rings in this mold, the finished article will have a projecting flange on its lower end and an annular groove on its upper edge so that the articles formed thereby are designed to be easily connected with each other in a manner which is obvious.

A bar 2-1 is adapted to project diametrically through the two walls of the mold, when they are assembled, and this bar is removably connected therewith so that after i the article is formed, the bar may be removed and a pair of alining apertures will be formed through the same so that a rope may be inserted through these apertures to lower the article in position. The use of this bar 24 is optional and the same is only advantageous when the mold is used for forming concrete casings for dug wells. whereupon the alining apertures are necessary to form holding means while lowering the molded article in position in the well.

From the foregoing description of the construction of this device, it may be easily seen that when it is desired to mold a tubular article, as for instance a concrete casing for a dug well, the four sections of the core portion 1 of this mold are assembled and the same is placed upon a suitable base, then the sections of the outer wall are assembled around the core and spaced equi-distant therefrom, and when these sections have been locked in position, the concrete or other plastic material is poured between the walls and the article will be formed thereby. Owing to the rings 22 and 23 above described, the molded article will be formed with a projecting flange on its lower edge and an annular groove in its upper edge. When the article has hardened and it is desired to remove the mold, the fastening members that secure the overlapping ends of the bars that surround the wall, are removed whereupon the outer wall may be easily removed therefrom. The spacing strip 6 in the core portion is now withdrawn, and the fastening members through the overlapping ends of the bars that secure the sections in position, are also removed whereupon the sections may be easily removed from the article without any danger of breaking or chipping the same.

From the foregoing description of the construction and operation of my improved mold, it will be easily understood and therefore seen that I have provided a simple, in-

expensive and efficient means for carrying out the objects of this invention.

I claim as my invention:

1. An inner wall mold comprising a plurality of arcuate separable sections placed end to end, aremovable fastening strip between the ends of two of said sections, transverse boards having arcuate outer edges secured to the inner surfaces of the sections, certain of the boards projecting at their ends beyond the end edges of the sections and overlapping the boards of the other sections, said overlapping ends of the boards being formed with alined openings, and removable bolts passed through said alined openings.

2. In a mold for tubular articles, the combination with an outer wall, of an inner wall comprising a plurality of arcuate sections placed end to end, a removable spacing strip between the ends of two of said sections, bars having arcuate outer edges secured to the inner surfaces of said sections at the top and bottom of the same, certain of said bars being slightly larger than the sections and having projecting ends overlapping the other bars, removable fastening members positioned through said overlapped ends, a metallic cover for the outer surface of said sections, and a removable ring surrounding said sections at their upper edge.

3. An outer wall mold comprising three arcuate separable sections placed end to end, two of said sections being of equal size and the other smaller, transverse boards with arcuate inner edges secured to the outer surfaces of said sections, said boards having their ends projecting beyond the end edges of the sections and overlapping, said overlapped ends being formed with alined openings, and removable bolts passed through said alined openings.

An outer wall mold comprising three arcuate separable sections placed end to end, two of said sections being of equal size and the other smaller,transverse boards with areuate inner edges secured to the outer surfaces of said sections, said boards having their ends projecting beyond the end edges of the sections and overlapping, each of said overlapping ends being formed with pairs of alined openings, and removable bolts passed through said alined openings.

5. In a mold for tubular articles, the combination with an inner wall, of an outer wall comprising three arcuate sections placed end to end, two of said sections being of equal size, and the other smaller, pairs of bars with overlapping ends secured to the outer surface of the larger sections adjacent the top and bottom of the same, single bars adjacent the top and bottom of said smaller sections with ends overlapping the ends of the bars of the adjacent sections, and removable fastening members positioned through said overlapping ends to detachably lock the sections in position.

6. In a mold for tubular articles, the combination with an inner wall, of an outer wall comprising a plurality of arcuate sections placed end to end, bars having arcuate inner edges secured to the outer surfaces of said sections, overlapping ends on said bars, removable fastening members positioned therethrough, a metal covering for the inner surface of said sections, and a shoulder secured to the inner surface of said sections at their lower edges and adapted to form a ring when the sections are in position.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

EMIL A. SCI-IUETTIG.

Witnesses:

WM. KRIsoI-I, W'. J. MUELLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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