Masonry fastener

Claim 2

In combination, a nut, a bolt and a plate for securing to a vertically apertured masonry block wall an associated wall-member extending longitudinally of the wall; the bolt having a first end substantially circular in cross section and threaded for threaded engagement therealong with the nut; the other end of the bolt being deformed to an oblong-oval cross-sectional configuration having arcuate ends connected by diametrically opposite flattened sides, the thickness between the flat sides being less than the diameter of the first end and having a distance between the rounded ends exceeding the diameter of the first end; the bOlt other end having a plurality of longitudinally-spaced, circularly-extending grooves therearound, the inner diameter of the grooves being substantially equal to the thickness between the flat sides, the grooves having a width substantially equal to the plate thickness; the plate thickness being less than the mortar layer thickness selected for the wall, the plate having a hole therethrough conforming to the cross-sectional shape of the bolt other end; whereby the bolt other end is inserted through the plate hole, the plate aligned with a selected one of the circularly extending grooves, the bolt then being rotated 90* to lock the plate and bolt, the plate lying in the mortar layer, the bolt extending through a wall vertical aperture and through a hole in the longitudinally extending wall-member for securing the member to the wall by the nut.

Claim 3

The combination nut, bolt and plate defined in claim 1, wherein the plate is deformed adjacent its hole on diametrically opposite sides of the hole for forming a positive stop against which the radially projecting rounded ends of the bolt other end abut when the bolt is rotated 90* after being inserted in the plate hole, whereby the bolt is prevented from turning with respect to the plate when the nut is tightened on the bolt first end.

Claim 4

The combination nut, bolt and plate defined in claim 2, wherein the plate has at least one dimple-like deformation substantially tangent to the path of the rounded ends of the bolt other end when the bolt is turned toward the positive stop deformations, whereby the plate is frictionally engaged by the sides of the slots in the bolt other end when it is turned with respect to the plate to prevent accidental dislodgement of the bolt from the plate.

Claim 5

The combination nut, bolt and plate defined in claim 1, wherein the plate is rectangular and has a slot in at least one end conforming in shape to the two flat sides and one rounded end of the bolt other end, whereby a second plate is usable as a wrench in turning the bolt other end with respect to an engaged first plate.

Claim 6

An anchor bolt device for masonry walls of building blocks having vertically extending apertures therethrough for securing to the wall longitudinally extending associated wall members, the device comprising: a nut, a bolt, and a rectangular plate of a thickness less than the thickness of the mortar layers of the wall; the bolt having a first end substantially circular in cross section and threaded for engagement therealong with the nut; the bolt other end being deformed to form flat surfaces on diametrically opposite sides and to extend the other opposite sides projecting beyond the circular surface of the first end, the thickness between the flat sides being less than the diameter of the first end and the projecting sides having arcuately curved surfaces; the bolt other end having a plurality of longitudinally-spaced circularly-extending grooves therearound, the inner diameter of the grooves being substantially equal to the thickness between the flat sides, the grooves having a width substantially equal to the plate thickness; the plate having a hole therethrough conforming to the cross-sectional shape of the bolt other end and being deformed adjacent the hole for forming a positive stop against which a projecting rounded side of the bolt other end abuts when the bolt is inserted in the plate hole with a selected one of the grooves aligned with the plate and the bolt is then turned 90*, the plate having also a dimple-like deformation adjacent its hole substantially tangent to the path of one of the rounded projecting sides of bolt other end when the bolt is turned toward the positive stop deformation; whereby the plate is embedded in a selected mortar layer when building the wall, the bolt is placed threaded end up extending through a block aperture with its other end through the plate hole with a selected groove aligned with the plate and then turned 90* thereby lockinG the bolt to the plate with its threaded end extending up above the block and adapted to pass through a hole through the associated wall member for securing the associated member to the wall by the nut.

Claim 7

An anchor bolt device for masonry walls of building blocks having vertically extending apertures therethrough for securing to the wall longitudinally extending associated wall members, the device comprising: a nut, a bolt, and a rectangular plate of a thickness less than the thickness of the mortar layers of the wall; the bolt having a first end substantially circular in cross section and threaded for engagement therealong with the nut; the bolt other end being deformed to form flat surfaces on diametrically opposite sides and to extend the other opposite sides projecting beyond the circular surface of the first end, the thickness between the flat sides being less than the diameter of the first end and the projecting sides having arcuately curved surfaces; the bolt other end having a plurality of longitudinally-spaced circularly-extending grooves therearound, the inner diameter of the grooves being substantially equal to the thickness between the flat sides, the grooves having a width substantially equal to the plate thickness; the plate having a hole therethrough conforming to the cross-sectional shape of the bolt other end and being deformed adjacent the hole for forming a positive stop against which a projecting rounded side of the bolt other end abuts when the bolt is inserted in the plate hole with a selected one of the grooves aligned with the plate and the bolt is then turned 90*, the plate having also a dimple-like deformation adjacent its hole substantially tangent to the path of one of the rounded projecting sides of bolt other end when the bolt is turned toward the positive stop deformation; whereby the plate is embedded in a selected mortar layer when building the wall, the bolt is placed threaded end up extending through a block aperture with its other end through the plate hole with a selected groove aligned with the plate and then turned 90* thereby lockinG the bolt to the plate with its threaded end extending up above the block and adapted to pass through a hole through the associated wall member for securing the associated member to the wall by the nut.

Claim 8

The anchor bolt device defined in claim 5 wherein the plate has a slot in at least one end conforming in shape to the two flat sides and one projecting rounded side of the bolt other end, whereby a second plate is usable as a wrench in turning the bolt other end with respect to an engaged first plate.