Abstract: A novel way of keeping thieves out of dwellings and other spaces utilizes two interlocked, relatively nested doors which, when so interrelated, are in turn, separately locked as a unit within the door frame. Release from the exterior requires knowledge of a secret system of a push-button control which must be operated in proper sequence. Special, tamper-proof hinges, common to the doors, permit them to be hung in the door frame for separate swinging or movement as a unit. The interlock between the doors is releasable only from the inside and, upon such release, the outer door remains locked until separately released by the occupant.

Abstract: An auto railway car having a plurality of decks is provided with a pair of folding door structures for closing the loading end of the car. The doors are hinged on spherical bearing structures and include locking mechanisms for locking the doors in open or closed positions.

Abstract: An auto railway car having a plurality of decks is provided with a pair of folding door structures for closing the loading end of the car. The doors are hinged on spherical bearing structures and include locking mechanisms for locking the doors in open or closed positions.

Abstract: A sliding roof assembly for motor vehicles of the type having a translucent, rigid sliding cover that closes a roof opening of a fixed roof part in a closed position and is lowerable down and out of the opening and is slidable behind a rear roof part in an open position as well as a sliding headlining that is slidable independently of the sliding cover and jointly therewith is improved in accordance with the present invention by the construction of guide channels for the sliding headlining by surfaces of a U-shaped shield connected to the sliding cover and a portion of an upper surface of lateral tracks used to guide the sliding cover.

Abstract: A personal security door arrangement constituted by the juxtaposition of two doors, which may be coupled together at will, in one same frame in an opening, the outer door affording complete visibility and, possibly, the passage of small objects, while the inner door is conventional. Said doors are hingedly mounted to the frame on the same side, rotate in the same direction and have interrelated lock arrangements.

Abstract: A sliding roof construction for a vehicle comprising a transparent slide roof member movable forwardly and rearwardly to close and open an opening provided in the roof of the vehicle and a sunshade slidably mounted beneath the transparent slide roof member for selectively covering the slide roof member. A guide rail is mounted on the roof of the vehicle for slidably supporting the slide roof member and the guide rail has first and second guide grooves extending substantially parallel to one another. One of the guide grooves slidably supports slider members respectively mounted on the slide roof member and sunshade in front to back relation such that when the slide roof member is opened, the sunshade is opened therewith, whereas when the slide roof member is closed, the sunshade can selectively cover and uncover the closed slide roof member. The other guide groove slidably supports a stay on the slide roof member which can be used to drive the slide roof member in its opening and closing movements.

Abstract: A sectionalized door for a barn or similar structure including a plurality of separable panels positioned side by side and fitted together by tongue and groove connections. Top and bottom rails extend across the upper and lower marginal edges respectively of the connected panels.

Abstract: A crank drives, by the intermediary of a system of cable and pulleys a carriage sliding on a fixed slide bar parallel to the displacement of sliding panels such as windows in an automobile so as to catch a latch and then drive in any direction the panels to be displaced, simultaneously or successively, the latch being part of a mobile slide bar serving as support independently for each of the panels and sliding with the carriage on the fixed slide bar.

Abstract: A screen door hinged for cooperation with and actuation separate from an outer closure door, and comprising; a peripheral frame including a full length hinge supported side rail, a second laterally spaced and relatively parallel side rail having an interruption between its ends, and cross rails connecting the outer and inner ends of said second side rail to said first mentioned side rail for providing relatively separate upper and lower screen receptive sections; and a member bridging the interruption in said second side rail and offset inwardly between the inner ends thereof for providing, with other spacer and channel grooved members, a recessed and reinforced center section for accomodating the handle and latch mechanism of the outer door member and making them more accessible when used in close association with an outer door closure member.

Abstract: The frame of an operator's cab has a sub-frame pivotally mounted thereon. An upper windshield is fixedly mounted on the sub-frame and a lower windshield is slidably mounted in a co-linear track defined on the main frame and on the sub-frame. A first latch is mounted on the sub-frame to releasably attach the sub-frame and upper windshield in a generally vertical closed position or a generally horizontal open position on the frame of the operator's cab.

Abstract: At least two identical sidewise swingable panels are pivotally mounted on a movable frame which is adapted to move horizontally on the main frame.The swingable panels are adapted to cover the entire space defined by the main frame. This construction permits easy cleaning and also orientation to obtain wind ventilation from left or right of a building.

Abstract: A window construction including a frame and inner and outer window structures is provided. The inner window structure is vertically shiftable in the frame a limited amount and may be swung horizontally inwardly toward an open position after being upwardly shifted in the frame from its lower position, the inner window structure and frame including coacting portions locking the inner window structure against swinging movement to the open position when the inner window structure is shifted downwardly relative to the window frame. The outer window structure includes upper and lower sections pivotally joined together along their adjacent marginal edge portions and the opposite ends of the upper and lower marginal portions of the upper and lower sections, respectively, includes outstanding guide pins slidably and rotably received in opposing vertical grooves formed in the opposite side upright portions of the window frame.

Abstract: A security lock which secures a building entrance against unauthorized entry by linking together the outer and inner doors against their respective door frame stops. This invention comprises link members wherein one member thereof is anchored to the outer door and the other member is a hinged link which passes through the inner door and is prevented from being withdrawn by a manually operated latch. When the security lock is not in use, the hinged link is pivoted out of the way.