US2566528A

US2566528A - Shuttering for use in the manufacture of concrete structures

Info

Publication number: US2566528A
Application number: US104495A
Authority: US
Inventors: Mackie Robert
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-07-15
Filing date: 1949-07-13
Publication date: 1951-09-04
Anticipated expiration: 1968-09-04

Description

Sept. 4, 1951 R. MACKIE 2,566,523

SHUTTERING' FOR USE IN THE MANUFACTURE OF CONCRETE STRUCTURES Filed July 13, 1949 2 Sheets-Sheet 1 ATTO R N EYS p 1951 R. MACKIE 2,566,523

' SHUTTERING FOR USE IN THE MANUFACTURE 4 OF CONCRETE STRUCTURES Filed July 13, 1949 2 Sheets-Sheet 2 INVENTOR ATTORN EY Patented Sept. 4, i951 SHUTTERING FOR USE IN THE MANUFAC- TURE OF CONCRETE STRUCTURES Robert. Mackie, Glasgow, Scotland Application July 13, 1949, Serial No. 104,495 In Great Britain July; 15,1948.

3 Claims. 1

This invention relates to shuttering for use inthemanufacture of concrete cavity walls and is a fiurthcr development of that described in the. specification of my prior British Patent No. 612,490.

The prior construction of shuttering includes panels flanged along their vertical edges, uprights adapted to receive the flanged edges of the panels, separators in the concrete-receiving space to hold. the upright apart, and withdrawable distance pieces to hold apart the uprights supporting the panels in the cavity.

An object of the present invention is to provide an improved construction permitting the insertion of permanent wall-ties before the concrete is poured and eliminating the separators.

In shuttering according to the invention a vertical edge face of each of the uprights for supporting the panels formingthe faces of the cavity i formed. with wall-tie receiving notches, and filling pieces are pivoted to each of said uprights, each of said filling pieces being engageable with a respective notch, the filling pieces being so proportioned that, when they engage the respective notches fully, there is a gap between the bottom of each notch and the adjacent face of the respective filling piece; all of the uprights and the distance pieces are formed with transverse slots, the slots in adjacent distance pieces and uprights being adapted to register to form passageways when the shuttering is assembled; and there are provided gauge bar notched in accordance with the desired spacing of the uprights and distance pieces and each adapted to be inserted through a respective passageway, the notches being engageable with the lower edge portions of the slots in the uprights and in the distance pieces.

Locking means may be provided to hold the gauge bars in place. Said locking means may be locking bars each inserted in a passageway along the face of the associated gauge bar remote from the notched face, whereby to prevent the gauge bar from being withdrawn.

Optional additional locking means to hold the gauge bars in place comprise locking bars inserted through transverse slots at the ends of the gauge bars, said locking bars abutting against the outer faces of the outer uprights of the shuttering.

A practical embodiment of the invention is illustrated in the accompanying drawings in which Fig. 1 is a section through a horizontal plane of a portion of the shuttering of the type referred to incorporating the improvements according to the present invention. Fig. 2 is a. sec tion through- Z--2. in Fig. 1,v and Fig. 3 is a section through 3-3 in Fig. 1.

In the drawings. I denotes panels flanged at 2, the flanges of the. panels. forming the faces of the cavity being cut away to clear the. wall ties to permit the panels. to be withdrawn after the wall ties are in position. 3 denotes T-shaped uprights, 3A denotes uprights supporting the. panels forming the. faces of the cavity, 4 denotes keys, 6 denotes distance pieces, 1 denotes the. concrete-receiving spaces, shown partly filled with concrete, 9 denotes an angle piece at. the outside of a corner, and I0 denotes the. upright at the inside of a corner. II denotes a metal strip linking the uprights. 2. I2 denotes a walltie receiving notch formed in a vertical edge face of each of the uprights 3A. I3 denotes a filling. piece pivoted at I4 to an associated upright. 3A. and engageable with an associated notch [2. I5. denotes a wall-tie resting in the gap presented between the bottom of the notch I2 and the adjacent face of the filling piece I3. I6 denotes transverse slot in the uprights 3, 3A and I0, and in the distance pieces 6, said slots being in register to form a passageway when the shuttering is erected. I'l denotes a gauge bar notched at I8 to engage the lower edges of the slots I6 and hold the uprights 3, 3A and III the required distance apart. I9 denotes a locking bar inserted in the passageway formed by the registering slots I6 after the gauge bar I I has been placed in position. 20 denotes additional locking bars formed with an abutment at each end and engaged in transverse slots 2i at the ends of the gauge bar I1, said additional locking bars 20 abutting against the uprights 3 and I0. A key 22 i inserted behind each additional locking bar 20, to hold said bar 20 in place, the abutments on the bar engaging the adjacent upright and preventing the bar from being withdrawn.

In practice, the uprights 3 and 3A with the corner upright I0 and the distance pieces Ii are erected, and gauge bars I! are inserted through the slots I6 and the locking bars I9 put in place, thereby holding the uprights 3, 3A and I0, and the distance pieces 6 in the desired spaced relation. The filling pieces I3 are swung about their pivots I4 away from the notches I2 and wall-ties I5 are inserted in the notches, after which the filling pieces I3 are swung back to engage the notches I2, thereby holding the Wall-ties I5 in place, the ends of the wall-ties I5 projecting into the concrete-receiving space. The panels I are now fitted to the uprights 3, 3A and I0.

Withdrawable distance pieces being inserted if necessary to hold the panels forming the faces of the cavity against the associated uprights.

Concrete is poured into the concrete-receiving spaces 1, and when it is set all of the outside panels I are removed. The locking bars H! are next removed and the additional locking bars 20, where used, are also removed. The gauge bar 1'! are now withdrawn from the slots IS. The distance pieces 6 are next withdrawn, the inside panels I are removed and each upright 3A in the cavity is moved along the cavity in the direction away from the wall-ties l5 carried by said upright. As the ends of the wall-ties are embedded in the concrete of the wall, the ties remain stationary and sidewise movement of the respective upright 3A causes the filling pieces l3 pivoted thereto to come against the tationary ties and to swing about the pivots l4 away from the upright. Each upright 3A can thus be completely disengaged from the associated wall-ties i5, and can be withdrawn from the cavity. It only remains to plug with cement or concrete the slots in the concrete walls left bythe gauge bars, and the wall is complete.

I claim:

1. Shuttering for use in manufacturing a cavity wall, including panels flanged along their vertical edges, uprights in the cavity in the formation of the wall, said uprights being adapted to receive the flanged edges of said panels, each upright having a vertical edge face formed with notches, withdrawable distance pieces to hold said uprights apart, filling pieces pivoted to each of said uprights and each engageable with a notch of the respective upright, each filling piece being so proportioned that, when it is fully engaged with the respective notch, there is a gap between the bottom of said notch and the adja cent face of the filling piece, all said uprights and said distance piece being formed with transverse slots, the slots in adjacent uprights and distance pieces when in register forming passageways through the assembled shuttering, and gauge bars each having a face notched in accordance with the spacing of said uprights and said distance pieces, each gauge bar being adapted to be inserted through a respective passageway, the notches in said gauge bars being engageable with the lower edge portions of the slots in said uprights and in said distance pieces.

2. shuttering as claimed in claim 1, including locking bar each adapted to be inserted in the passageway along the face of an associated gauge bar remote from the notched face of said gauge bar.

3. Shuttering as claimed in claim 1, including outer uprights adapted to support the panels forming the outer faces of the wall in which the gauge bars are formed with transverse slots, and locking bars are insertable in said slots, said slots being so located that said locking bars abut against the outer faces of said outer uprights.

ROBERT MACKIE.

' REFERENCES CITED The following references are of record the file of this patent:

UNITED STATES PATENTS Number- Name Date 1,103,109 Venable July 14,1914 1,236,852 McKay Aug. 14, 1917 1,421,956 Kestler July 4, 1922 1,815,368 Wotnoske July 21, 1931 2,304,851 Schlatter et al Dec. 15, 1942 FOREIGN PATENTS Number Country Date 612,490 Great Britain Nov. 12, 1948'