Trim alignment for mortise locks

Claim 2

Lock trim alignment means for use with a mortise lock having a case and a latch hub and being installed in a door, comprising, a threaded opening in the lock case coaxial with the latch hub, a first bushing screwed into said threaded opening, a second bushing screwed onto the first bushing, a flange associated with the second bushing and projecting laterally in a position to engage a door surface adjacent said bushings, and a knob and spindle assembly journaled in said second bushing with the spindle aligned with the common axis of said bushings and hub.

Claim 3

Lock trim alignment means according to claim 1 wherein the first bushing is provided with a stop to limit its movement into said opening.

Claim 4

Lock trim alignment means according to claim 2 wherein the first bushing is formed medially with an annular groove and the stop is a C-ring fitted in said groove.

Claim 5

Lock trim alignment means according to claim 1 wherein the flange is integral with the second bushing.

Claim 6

Lock trim alignment means according to claim 4 wherein the flange is provided with openings to receive rotation preventing means.

Claim 7

Lock trim alignment means according to claim 4 wherein the flange is provided with surface irregularities adapted to engage the door surface.

Claim 8

Lock trim alignment means for use with a mortise lock having a case and a latch hub therein and being installed in a door, the lock case being provided with a threaded opening coaxial with the latch hub, the alignment means comprising a first bushing having first and second threaded portions and a stop and the first threaded portion being screwed in said threaded opening with said stop against the case, and a second bushing having two threaded portions with a flange therebetween, one threaded portion being adapted to be engaged with the second threaded portion of the first bushing, the flange being adapted to be engaged with a door surface adjacent said bushings when the second bushing is screwed onto the first bushing and the other threaded portion projecting axially outwardly beyond the plane of said flange and adapted to receive additional trim elements.

Claim 9

Lock trim alignment means for use with a mortise lock having a case and a latch hub therein and being installed in a door, the lock case being provided with a threaded opening coaxial with the latch hub, the alignment means comprising a first bushing having first and second threaded portions and a stop and the first threaded portion being screwed in said threaded opening with said stop against the case, and a second bushing having two threaded portions with a flange therebetween, one threaded portion being adapted to be engaged with the second threaded portion of the first bushing, the flange being adapted to be engaged with a door surface adjacent said bushings when the second bushing is screwed onto the first bushing and the other threaded portion projecting axially outwardly beyond the plane of said flange and adapted to receive additional trim elements.

Claim 10

Lock trim alignment means according to claim 7 wherein the additional trim elements comprise a rose and a bushing screwed onto said other threaded portion to hold the rose firmly against the adjacent door surface.

Claim 11

Lock trim alignment means according to claim 7 wherein said axially projecting portion is provided with an antifriction bearing element adapted for a free fit with a complementary surface of a knob.