Doorframe

Claim 2

A doorframe for installation in a rough door opening defined in part by first and second upstanding members; said doorframe comprising a first jamb adjacent to the first upstanding member, a second jamb adjacent to the second upstanding member, a header extending between the upper ends of the jambs, connecting means for holding the header and first jamb together, a track on the header, a slide on the track and extendable beyond the end of the track for engagement with the first upstanding member, actuating means for forcibly extending the slide into engagement with the first upstanding member so that the force exerted by the slide urges the header toward the second upstanding member, and means for transferring the force applied to the header by the positioning means to the second jamb, whereby the second jamb is forceD tightly against the second upstanding member.

Claim 3

A doorframe according to claim 1 wherein the actuating means comprises a curved spring element connected at its one end to the slide and having its opposite and substantially fixed with respect to the header, and means changing the curvature of the spring element, whereby the end of the spring element attached to the slide will move and shift the slide on the track.

Claim 4

A doorframe according to claim 2 wherein the means for changing the curvature of the spring element includes a bolt extending through the header and exposed for rotation externally of the doorframe and a nut on the spring and engaging the threads of the bolt.

Claim 5

A doorframe according to claim 3 wherein the fixed end of the spring is attached to the track, and wherein the spring is provided with a longitudinally extending slot through which the bolt extends.

Claim 6

A doorframe according to claim 1 wherein the jambs and header each have a pair of sidewalls interconnected by webs, the sidewalls of the jambs and header extending across and obscuring the margins of the rough opening, and wherein the second jamb is provided with spacer elements having abutments located outwardly from the web, the abutments being urged into engagement with the second upstanding member by the slide.

Claim 7

A doorframe according to claim 1 wherein the connecting means comprises tabs on the first jamb and slots in the header for receiving the tabs, and wherein the means for transferring the force between the header and second jamb comprise tabs on the second jamb and slots in the header for receiving the tabs.

Claim 8

A doorframe according to claim 1 wherein the jambs and the header each have a pair of sidewalls interconnected by a web provided with an inwardly projecting soffit which forms a channel in the web, the sidewalls extending across and obscuring the margins of the rough opening, and wherein the track is mounted in the soffit of the header.

Claim 9

A doorframe for installation in a rough door opening having first and second members disposed at the sides of the opening; said doorframe comprising a first jamb positioned adjacent the first member, a second jamb positioned adjacent to the second member, a header connecting and engaged with the upper ends of the jambs so that the jambs and header will shift laterally as a unit, a shiftable pressure element mounted for movement generally transversely of the first jamb and generally toward and away from the first member, a curved spring element connected at its one end with the pressure element and having its opposite end substantially fixed with respect to the header, the spring element being adapted to shift the pressure element relative to the first member when its curvature is altered, and means for altering the curvature of the spring element so as to bring the pressure element into snug engagement with the first member whereby the doorframe will be lodged between the first and second members.

Claim 10

A doorframe for installation in a rough door opening having first and second members disposed at the sides of the opening; said doorframe comprising a first jamb positioned adjacent the first member, a second jamb positioned adjacent to the second member, a header connecting and engaged with the upper ends of the jambs so that the jambs and header will shift laterally as a unit, a shiftable pressure element mounted for movement generally transversely of the first jamb and generally toward and away from the first member, a curved spring element connected at its one end with the pressure element and having its opposite end substantially fixed with respect to the header, the spring element being adapted to shift the pressure element relative to the first member when its curvature is altered, and means for altering the curvature of the spring element so as to bring the pressure element into snug engagement with the first member whereby the doorframe will be lodged between the first and second members.

Claim 11

A doorframe according to claim 8 wherein the spring element advances the pressure element toward the first member when its curvature is lessened.

Claim 12

A doorframe according to claim 9 wherein the means for altering the curvature of the spring element comprises a nut an bolt connected between the spring element and header and having a portion exposed externally of the header for rotation, the bolt and nut changing the curvature of the spring element when rotated relative to each other.