Abstract: A door coordinator for controlling the closing sequence of a pair of double doors having a common line of closure. The coordinator has a biased trigger which pivots and a door stop which translates toward the rear of the coordinator upon triggering. Override is provided by an override block (preferably pivotally mounted) biased into a first position which moves to a second position upon application of more than threshold override force. With the override block in the second position, the door stop is free to move in translation to the rear of the coordinator and permit closure of the door even if the trigger is not depressed. Threshold override force is adjusted by a screw which adjusts the angular position of a base plate in contact with biasing springs which bias the override block.

Abstract: An arrangement for controlling the closing sequence of two wings of windows, doors, and the like, especially smoke or fire protection doors, which are closable by means of a door-closing device each. The two wings are a moving wing to be opened first and a resting wing to be opened subsequently, so that projecting edges of the doors which face each other come into contact with each other in the correct sequence. A control device is actuated primarily by the slide rollers of the door-closing device of the resting wing when the resting wing is opened. With the use of a control lever and a sliding member displaced by the control lever toward the axis of rotation of the resting lever, a locking member is pivoted into the return end region of the guide roller of the door-closing device of the moving wing. This locking member locks the final closing movement of the moving wing until the resting wing has been closed.

Abstract: The coordinator has a pair of spaced-apart limbs pivotably mounted to a housing; one of the limbs functions to hold a door open, whereas the other limb is disclosed for impingement by another door and, as a consequence thereof, causes activation of the door coordinator, i.e., triggers a proper, sequential closing of the two doors, in which the inactive door proceeds to close, while the active door is held open. A carriage slidably mounted to the housing has a lobe which intrudes into the pivotable arc of one of the limbs to prevent that limb from allowing its door to close before the door, held open by the other limb, has closed. A blocking arm keeps the carriage in its lobe-intrusive position, and has a linkage with the other limb. Accordingly, as the other limb permits the closure of its door, the linkage moves the blocking arm to allow the second door to close.

Abstract: A metal door construction has two sheet-metal panels 10,11 which form the flat sides of the door. The panels present folded side-edge portions 10a-10g, 11a-11e which extend parallel to and in contact with one another within a joint region 10f; 11e. One panel is provided with a double fold 10c, 10e which forms a pocket for receiving the straight end-edge part 11f of the other panel. The other panel is provided with an outwardly folded profiled part, in the form of a bead or like promontory 11b, on the other side of the joint region. The metal door may be provided with a mullion structure for cooperation with a similar metal door 3 to form a double door construction hung in the same frame. The mullion structure includes a plate 4 which covers a hooked latching bolt used to hold the two doors together and to prevent the door crack from increasing to a non-permitted extent in the event of fire.

Abstract: The internal space of a safe is subdivided into two compartments lying side by side by a vertical partition provided with a reinforced vertical upright. A reinforced closure door comprises two leaves adapted to be closed in succession, each having its own locking mechanism with bolts adapted to engage in said upright in their thrown position. The bolts of the two mechanisms are made functionally interdependent by means of pivotal latch members borne by the partition which lock in the thrown position the bolts of the second-to-close door leaf in response to the throwing of the bolts of the first-to-close door leaf.

Abstract: A holding installation with an integrated closing sequence regulation is described for double doors comprising a leading door which is the first to close and a trailing door which then closes. The hydraulic door closer associated with the trailing door is provided with a signal generating device which is actuated in dependence on the piston position, and with an additional return flow passage for hydraulic fluid. The signal generating device controls the solenoid valve which holds the leading door by preventing the movement of hydraulic fluid contained in the door closer for the leading door, thus preventing movement of the associated piston.

Abstract: A double door installation includes an astragal which is removably mounted in the head jamb and sill portions of the door frame independently of the doors, but the combination includes a locking mechanism in one door which incorporates a bolt arranged to project through the astragal into the other door to effect firm locking of both doors to each other and to the astragal.

Abstract: A safety cabinet for the storage of flammable or combustible materials that has doors and a closure mechanism designed to automatically close and latch the doors in the event of fire. The closing mechanism is fully automatic and eliminates mechanical timing features as well as provides an automatic positive method and structure of closing the doors of the cabinet to insure a complete seal and lock.

Abstract: A portable, variable width gate for doorways comprising first and second gate sections operably secured together in face to face relation to alter their combined width for filling doorways of varying widths. Actuator means for relatively moving the gate sections including a handle engaging the actuating means in one position and disengaged therefrom in a second position.

Abstract: Apparatus is described for regulating the closing sequence of double doors with at least one door closer associated with the leading door and a control arrangement which is actuated by the trailing door and which cooperates with the door closer of the leading door. The special feature of the apparatus lies in the fact that the control arrangement consists of a positioning member, which is arranged in the hinge edge region of the trailing door and is movable by the trailing door between first and second switching positions, and of a connection member which is connected to the positioning member. The connection member extends up to the door closer for the leading door and mechanically transmits the movement of the positioning member, to the closer for the leading door. The leading door end of the connecting member acts on a control member which blocks the closing movement of the door closer in one of the two switching positions of the positioning member.

Abstract: A rectangular frame set into the concrete surround at the head of a shaft supports one or more slab doors that are hinged to the frame. Adjacent each hinge line brackets fixed to the frame support a fixed spindle upon which a helical spring is secured. The spring has an extending limb at one end that bears against the under surface of the door. The other end of the spring is engaged with a winding bushing rotatable on the fixed spindle, and the bushing has a hollow hub for accepting a detachable winder so that the spring may be pretorqued to the proper loading to raise the door from its horizontal closed position to a substantially vertical attitude for access to the shaft or other opening.The frame defines a drip trough to collect moisture passing the door edges and when two doors are used a channel extending along the butt line of the doors collects water passing between the adjacent edges of the doors.

Abstract: A door closing coordinator for a pair of oppositely hinged doors where closure of the inactive door withdraws a stopping member from a holding lever for the active door and permits the active door to close after the inactive door. An override mechanism is provided to permit the active door to close first if a predetermined force is applied thereto to avoid damage to the active door.

Abstract: An improved astragal for use in a double door assembly having an active door and a relatively inactive door is disclosed. The astragal has a vertically extending mullion housing which is attached to the free edge of the relatively inactive door. A vertically extending slide section is mounted on the mullion housing on the sealing side of the free edge of the inactive door. The slide section extends from the free vertical edge of the inactive door when the active door is in the closed position. The slide section is vertically movable from an unlocked position to a locked position wherein the slide section is moved vertically downward with respect to the mullion housing to engage the sill/threshold of the door frame, thereby preventing any movement of the inactive door.

Abstract: A manway cover is formed using two like door panels made of lightweight, corrosion-resistant material which are hand operable from either side of the manway and can be installed without tools.

Abstract: A pair of doors hinged to a frame and including a self-locking three-point latch and coordinated closing system.

Abstract: A safety cabinet for the storage of flammable or combustible materials has doors and a closure mechanism designed to automatically close and latch the doors in the event of fire. In one version, apparatus is provided to time the closing of the doors to insure a complete seal and lock. In a second version, apparatus is provided to seal the cabinet independently of the closing sequence of the doors.

Abstract: A free-standing unit for heating air in a U-shaped channel surrounding a fire box having a pair of spaced vertical vents for directing the heated forced air to converge in front of the fire box opening to limit air flow towards said openings. Mesh in the vertical vents directs the forced air downward to be combined with the hot forced air from a bottom horizontal vent. A baffle plate depending from the top of the fire-box adjacent the flue port and an opening along the top of the doors ignite the gases adjacent the top and directs some gases back into the fire. By forcing heated air at a low level and drawing cool air from a high level, the air being heated is of a uniform temperature. A hood extending along the top edge of the fire box opening diverts exiting gases back into the fire box. A thermostatically controlled blower creates the forced air and cools the fire box walls.

Abstract: A pair of doors hinged to a frame and including a self-locking three-point latch and coordinated closing system.

Abstract: A first bracket is secured to one of a pair of doors hinged to a door frame for closing the same; a second bracket is secured to the other of the pair of doors; and the brackets are disposed in overlapping relationship, and include means which are interengageable, when the doors are in closed position.

Abstract: A first bracket is secured to one of a pair of doors hinged to a door frame for closing the same; a second bracket is secured to the other of the pair of doors; and the brackets are disposed in overlapping relationship, and include means which are interengageable, when the doors are in closed position.

Abstract: An end closure for a rail car which comprises a pair of sliding doors. Locking mechanisms provided for securing the doors in closed position extending across the end of the rail car as well as in open and in intermediate positions. Each door moves from closed to open position through an opening in the side wall of the rail car to an open space on the outer side of the side wall within the allowed rail car clearance.

Abstract: A door hinged in a frame at one edge has a pivotal locking element along its other edge, with a longitudinal groove cooperatively receiving a counter-locking projection on the frame. The locking element includes a rotation stop to prevent the rotation of the door beyond closed position. The locking element is sufficiently rotatable about its pivotal mounting that its groove is disengaged from the locking projection for opening the door. A spring interconnects the locking element and the door for biasing the locking element in open or closed position. Grips are fastened respectively on one side of the door and to the locking element on the other side of the door. The rotation stop has an angularly arranged plate extending into an opening in the door with a projection on its free edge registerable with a corresponding projection on the door to limit opening pivotal movements of the locking element.