Adjustable door jamb

Claim 1

An adjustable door jamb, comprising an upright frame member having a plurality of holes therein extending completely therethrough, one of which is intermediate the opposite side edges of said frame member at the center thereof with another hole on each side thereof intermediate the center hole and the frame member side edges, a threaded fastener extending through said center hole and threaded into the end of the wall forming one of the sides of the door opening for adjustably securing said frame thereto, and a plurality of threaded adjusting elements extending through the other of said plurality of holes threadably engaged with said frame and exerting an outward force against the end of said wall opposing the inward force produced by said threaded fastener for firmly securing and adjusting said frame at a desired distance and angle from the end of said wall, said threaded fastener and said threaded adjusting elements being individually adjustable with said frame member in installed position, said frame including a wood jamb and a metal plate secured to the surface of said jamb facing the end of said wall, said adjusting elements being threaded through said metal plate, a second metal plate having a hole centrally thereof through which said fastener extends, said second plate being physically positioned between the end of said wall and the ends of said adjusting elements for transmitting the opposing force and permitting said frame to be balanced and adjusted without regard to irregularities in the end of said wall, said frame including a door stop mounted against the surface of said wood jamb facing the door, said center hole in said jamb being countersunk with the head of said fastener extending toward but spaced from saId door stop, said door stop having bores opening therethrough corresponding to the adjusting element bores on one side of said center bore to permit adjusting of said adjusting elements from the door side of said frame.