US1432290A - Concrete form - Google Patents

Description

. HARRIS.

CONCRETE FORM.

APPLICATION FILED MAY]? Patented Oct. 17, 1922.

2 sHEETs-sHEU 1.

gwuenko'a J. W. HARRIS.

CONCRETE FORM. I

APPLICATION FILED MAY 17, I921.

LASQQQGO 4 Patented 00w 1?, 1922,

2 SHEET$-SHEET 2.

Patented @et. 1?, i922.

and L- J'OEN W. HARRIS, 0F PEAR-SALL, TEXAS.

CONCRETE FORM.

Application filed May 1?,

To all 10 [tom it may concern:

Be'it'known that 1, JOHN W. Harms, a citizen of the United States, residing at Pearsall, in the'county of Frio and State ofTeXas, have invented a new and useful Concrete-Form, of 'whiehthe following is a specification.

Thisiinvention relatesto concrete moulds or forms, and-more particularly to moulds ofthe 'separable type.

The primary object ofthe invention is toprovide a mould including a plurality of separable sections, the sections being of constructions to permit the same to be nested onewithin the other to facilitate the transportation and storage thereof.

A furtherbut important object of the invention is to provide means for adj ustably connecting the adjacent ends of the bracing rings ofthe mould.

A still further object of the invention is to provide means for locking the ends of the circular members forming the body portion of the mould, the locking means being such as to permit the ready and easy applica tion thereof.

WVith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings Figure 1 is aplan view of a mould in its assembled form.

Figure 2 is a transverse sectional view through the mould.

Figure 3 is a sectional detail disclosing the supporting blocks.

Figure 4 is a fragmental sectional view through adjacent ends of one of the bracing rings.

Figure 5 is a sectional detail view disclosing the adjustable connection between predetermined sections of the ring.

Figure 6 is a fragmental detail view of adjacent ends of one of the members formin the body portion of the mould.

igure 7 is a detail view of one ofthe 1921. Serial No. 470,317.

locking members of the body portion of the mould.

Figure 8 is a plan view of the same.

Figure 9 is a perspective view of. one of the locking members.

Referring to the drawings in detail, the mould includes a body portion formed of the outer and inner split bands 5 and 6, the bands being formed of suitable sheet metal and arranged in circular formation, it be ing understood that the particular mould is employed. for constructing concrete watertroughs or the like.

The outer band of the body portion indicated at 5 is of a diameter greater than the diameter of the inner band 6, so that when the band 6 is positioned within the con fines of the outer band 5, a suitable space will be provided therebetween to accommodate the cement or material used in connection with the mould for forming the finished tank or trough. As shown, each of the members 5 and 6 is provided with elongated openings 7 formed in the overlapping ends thereof, which openings are designed to accommodate the keys or locking members 8. Each of these keys includes a body portion and lug 9 having an offset portionlO, the offset portion 10 being for the purpose of closely engaging one of the faces of the band associated therewith to secure the adjacent ends of the band together, the lugs 9 being of diameters to permit the ready insertion thereof within the elongated openings 7, whereupon movement of the band causes the walls of the elongated openings to grip the key positioned therein.

Supporting blocks 11 are employed in connection with the mould and each of these blocks is provided with a groove formed in the upper surface thereof, the groove being curved to accommodate the inner band 6, while the outer extremity of the blocks contact with the inner surface of the outer band 5 to support the same in proper spaced relation with the inner band 6.

It might be further stated that these supporting blocks 11 support the inner band 6 in spaced relation with the surface on which the mould is positioned, and as shown, the inner band 6 is of a width less than the width of the outer band 5 to provide a space between the lower edge of the band and the surface on which the mould is positioned to permit a portion of the cement or concrete poured between the bands to pass into the central portion of the mould, to form the bottom of the finished trough.

Bracing rings are provided within the inner band member, each bracing ring being formed of a plurality of sections 12, and as shown, each bracing ring is provided with an extension 13 to be positioned within one end of the adjacent section to unite the sections and prevent movement of one section with respect to the other.

As clearly shown by Figure 5 of the drawings, a spacing bolt 14; is provided, which bolt is threaded to accommodate the spacing nuts 15, the ends of the bolt 14: being positioned in adjacent ends of two of the sections, the nuts 15 being operated to expand, or move the sections of the supporting ring away from each other, causing the ring to closely engage the inner surface of the inner band 6.

It is to be understood that two of these bracing rings are employed, one being positioned adjacent to the upper edge of the inner band, while the other is positioned adj acent to the lower edge thereof. In order that the bands 5 and 6 may be held in spaced relation at points between the supporting blocks 11, bars 16 are provided, the bars being positioned so that the ends thereof contact with the bands 5 and 6.

In the use of the device when the bands are positioned as shown by Figure 1 of the drawings, concrete or cement material is poured between the bands 5 and 6, whereupon the same is allowed to set. After the cement or other plastic material has become hardened, the bands 5 and 6 are removed and the roughened surfaces of the finished product are painted or smoothed with a water-proofed cement or the like.

It is to be understood that all openings formed by the elements of the mould should be filled with the plastic material.

Having thus described the invention, what is claimed as new is 1. A mould construction including split outer and inner bands, means for securing the ends of the bands together, supporting blocks, each of said supporting blocks having a groove to accommodate portions of the inner band member, the outer edge of each supporting block adapted to contact with the outer band, and bracing rings positioned within the inner band member to hold the same in an extended position.

2. A mould construction including split outer and inner bands, means for securing the ends of the band members together, supporting blocks on which one of the band members is positioned, separable bracing ring members, each of said sections havin an extension adapted to be positioned with one of the adjacent section, a bolt positioned within the ends of predetermined sections, nuts operating on the bolt, and said nuts adapted to contact with the sections for moving the same to their extended positions.

In testimony that I claim the foregoing as myown, I have hereto aflixed my signature in the presence of two witnesses.

1 JOHN W. HARRIS.

Witnesses:

EARNEsT DE VILBIss, WARREN SMITH.

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