Abstract: A concealed swinging door hinge which allows a door to close with a better fit to the jam or adjacent door and yet allows the door to open a full one hundred and eighty degrees and provides good clearance when so open is disclosed in four embodiments. In each embodiment, the hinge employs a link member between the door and jam which defines two vertical hinges, one coupled to the jam and the other to the door. The hinge includes means for advancing the respective hinge axes out from the jam and door as the door swings open, and for retracting them as it swings closed, as well as means for coordinating such hinge advance and retreat so that each advances and retreats at least approximately the same distance as the door swings open or closed. In the first embodiment, the link member forms continuous hinges down the entire length of the door with two arm members, one coupled to the jam and one to the door.

Abstract: Several embodiments of disposable crawling insect traps are disclosed, each of which is made of moderately flexible pasteboard or other inexpensive material, formed in an elongated, narrow, slim, flat continuous strip, and sized to easily lay or be releasably secured across or adjacent to a room's thresholds, window sills, exhaust grills, ducts, corridors, stairs, cabinet bases, and other points of entry or exit by crawling insects. The traps contain an interior surface partially covered with a tacky glue-like substance for ensnarling the insects, or, alternatively, that surface may contain insect poison. In several embodiments, a "roof" layer of thin material is supported over the interior layer of glue or poison, so as to provide ease in handling and an attractive (to insects), narrow, elongated slit running along one long edge or side of the strip.