Geometrical instruments – Straightedge type – Wall guide and plumb
Patent
1996-05-03
1998-07-14
Will, Thomas B.
Geometrical instruments
Straightedge type
Wall guide and plumb
33413, 33 1H, E04G 2118
Patent
active
057785465
ABSTRACT:
An adjustable batter board used in locating forms and trenches for pouring foundations and constructing walls includes an elongated tubular cross member having holes passing from a top to a bottom surface at each end of the cross member for receiving reinforcing rods therethrough. The rods pass through the top and bottom holes within the tubular cross member and through an eye of an eyebolt positioned within the tubular cross member and aligned with the top and bottom holes. With the rods driven into the ground at desired locations, adjustment of the batter board to a desired vertical location on the rods is made and the eyebolts at each end of the member are forced outwardly toward a tube end through the tightening of a nut at the eyebolt threaded end for biasing the rod against a hole side wall and thus securing the batter board the rods. A U-clamp styled slide member moveable along the cross member outside surface includes a slot for permitting an alignment string to be positioned onto the cross member top surface. The slide member further includes a bolt passing between ends of the clamp for biasing the ends against the cross member for securing the string position.
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