Abstract:
A moulded nylon glass fibre reinforced fixing device has an elongate body with leading (10) and trailing ends (12), the body comprises two or more similar legs which splay apart to hold the device in position when the leading end is driven into blockwork. Devices shown are rectangular in section with legs defined by slot(s) (22) running partially along the length of the device away from the leading end (10). One form of device has a slot (22) extending through its thickness defining two legs and another two slots (52, 54) defining four legs. A third has two slots (70, 72) each extending partway through the device from opposed faces and which are parallel and separated by a readily rupturable wall part (80). A fourth has a slot (62) extending between readily rupturable parts (64) of opposed side walls of the device. Surfaces to contact blockwork may be roughened and surfaces defining slot(s) may have triangular grooves (30) therein. Described devices have a circular in section bore (32) extending at least part of the length of the device from the trailing end which widens in moving towards the leading end (10) - the bores may flare outwardly in moving to the leading end and/or be in two parts - the bore diameter at the trailing (12) end being less that the diameter of the remainder. The bore may be provided with lands (134) extending inwardly thereof, or be threaded, at the trailing end (12) and apertures (50) may pass from the bore through the material of the device to ease expansion of the trailing end when a screw is inserted in it. The outer surfaces of the trailing end of the device may flare outwardly in moving away from the leading end, alternatively, the trailing end of the device may be flanged.
Abstract:
A device fixable to blockwork has the form of a tie (10) with first and second elongate body parts joined one to the other at their first ends whilst their second ends are apertured to receive fixing means for fixing the tie to blockwork. The body parts may be coplanar or be disposed at right angles one to the other. The tie as described (Fig. 1) is of moulded plastics material and the body parts are joined by a live hinge. Edges of each body part carry walls (16, 17) extending normally of the plane of the tie and these walls are of increasing height in moving from the hinge (20) to the ends (12, 14) of the tie. Fixture of the tie to blockwork is achieved by driving the body of fixing means (30, Fig. 2; 54, Fig. 3; 74, Fig. 4; 94, Fig. 5) into blockwork through the apertures (22, 24) such that the bevelled undersurfaces of heads of the fixing means bear on bevelled edges (26) of the apertures. Various fixing means are described all of which are of moulded glass fibre reinforced plastics material, are rectangular in section along their length and taper inwardly in moving from their trailing to their leading ends. One described fixing means (30, Fig. 2) is slotted to form a pair of legs (18) when driven into blockwork, whilst others (Figs. 4, 5) are formed with lands running along at least part of their lengths. A method of bonding blockwork, joining adjacent blocks of material, to form a wall is described.
Abstract:
A device fixable to blockwork has the form of a tie (10) with first and second elongate body parts joined one to the other at their first ends whilst their second ends are apertured to receive fixing means for fixing the tie to blockwork. The body parts may be coplanar or be disposed at right angles one to the other. The tie as described (Fig. 1) is of moulded plastics material and the body parts are joined by a live hinge. Edges of each body part carry walls (16, 17) extending normally of the plane of the tie and these walls are of increasing height in moving from the hinge (20) to the ends (12, 14) of the tie. Fixture of the tie to blockwork is achieved by driving the body of fixing means (30, Fig. 2; 54, Fig. 3; 74, Fig. 4; 94, Fig. 5) into blockwork through the apertures (22, 24) such that the bevelled undersurfaces of heads of the fixing means bear on bevelled edges (26) of the apertures. Various fixing means are described all of which are of moulded glass fibre reinforced plastics material, are rectangular in section along their length and taper inwardly in moving from their trailing to their leading ends. One described fixing means (30, Fig. 2) is slotted to form a pair of legs (18) when driven into blockwork, whilst others (Figs. 4, 5) are formed with lands running along at least part of their lengths. A method of bonding blockwork, joining adjacent blocks of material, to form a wall is described.