Patent ID: 8544903

Claim:
A roseless trim for a mortise lock comprising: an outside handle base; an outside handle, rotatably attached to the outside handle base via a first spindle; an outside spindle hub adapted to be rotatably mounted within the mortise lock and retract a latchbolt when rotated via the first spindle, the outside spindle hub having a curved slot formed therein; an inside spindle hub adapted to be rotatably mounted within the mortise lock and retract the latchbolt when rotated via a second spindle, the inside spindle hub having a curved slot formed therein; an inside handle base; an inside handle, rotatably attached to the inside handle base via the second spindle; a pair of through bolts received by the outside handle base and, extending through the curved slot in the outside spindle hub and through the curved slot in the inside spindle hub, the spindle hubs having the curved slots and each having a curved centerline defined by an arc of a bolt circle having a diameter of less than one inch (25.4 mm) with a center of curvature located at a rotational axis of the spindles and the spindle hubs, the distance between the pair of through bolts with the centerline rotational axis of the spindles and the curved slots of the spindle hubs allows the spindle hubs to rotate and retract the latchbolt without interference from the pair of through bolts; and an inside mounting plate attached to the through bolts, the through bolts extending through the mortise lock between opposite sides of a door and acting to secure the inside mounting plate against rotation; the inside and outside handle bases being secured against rotation by the through bolts and by the inside mounting plate, the inside and outside handle bases having a size sufficient to cover the through bolts and the outside spindle to prevent the through bolts and the outside spindle from being seen when installed.