Control for a double-acting door

Claim 2

In combination with a double-acting door hinged along a side margin for swinging movement inwardly and outwardly from a position closing a door opening which is defined by structure bounding the door, mechanism for positioning the door with such closing the door opening comprising a bolt mounted on the door having extended and retracted positions relative to an edge of the door, a bolt well in the structure bounding said door opening positioned to receive said bolt with the latter extended and the door in its closing position, a movable door actuator on each side of the door, each including a camming means, and each being movable with a door opening force applied thereto, movable bolt-moving means including camming means interposed between said bolt and both of said actuators, the camming means in said bolt-moving means being constructed to coact with the camming means in said actuators, movement of either actuator causing such coaction between its camming means and the camming means in said bolt-moving means, and effecting placement of said bolt in its said retracted position, and detent means mounted on said door adapted to brush against the structure bounding said door opening with movement of the door inwardly or outwardly and to produce with the bolt in its retracted position and on so brushing the structure movement of the bolt to its extended position.

Claim 3

The combination of claim 1, wherein said camming means in said bolt-moving means comprises a pair of oppositely inclined cam surfaces.

Claim 4

The combination of claim 1, wherein the door is provided with a closure device biasing the door to its position closing said door opening with the door swung either inwardly or outwardly, and producing decelerated movement of the door as it nears its said closing position, and wherein said detent means starts to brush against the structure bounding said door opening on return movement of the door in either direction toward its closing position under the action of said closure device and before the door fully reaches such position.

Claim 5

The combination of claim 1, wherein the door comprises a frame with a tubular stile forming a vertical margin in the door terminating in said edge of the door, and said bolt-moving means comprises a guiding support mounted within said stile, a member mounted for reciprocal movemeNt normal to said edge within said guiding support and joined to said bolt, means biasing said member within said support in a direction extending outwardly of the edge of the door, and which further comprises a keeper for releasably holding said member within said guiding support inwardly on the door against the urging of said biasing means.

Claim 6

In combination with a double-acting door hinged along a side margin for swinging movement inwardly and outwardly from a door opening defined by structure bounding said door, a push bar on each side of the door movable toward and away from the door, said bars having movable ends adjacent a margin of said door opposite said side margin, a cam surface associated with each push bar which moves in a direction extending toward the opposite side of the door from the side having the push bar when the push bar is pressed toward the door, a guided member mounted within said opposite side margin of the door guided for reciprocal movement normal to the edge of the door, said member including cam surfaces complementing the cam surfaces associated with said push bars operable to produce movement of the member inwardly from said side edge to a retracted position with movement of either of the push bars toward the side of the door having the push bar, a keeper adjustable to hold said member in a retracted position, a keeper release including a detent projecting outwardly from said edge of the door adapted to brush against the structure defining said opening and actuatable to release the keeper from its position holding said member in its retracted position, biasing means for urging said member toward said side edge on release of the keeper means, and a bolt joined to said member shiftable to a position extending out from said side edge under the urging of said biasing means.

Claim 7

In combination with a double-acting door hinged along a side margin for swinging movement inwardly and outwardly from a door opening defined by structure bounding said door, a push bar on each side of the door movable toward and away from the door, said bars having movable ends adjacent a margin of said door opposite said side margin, a cam surface associated with each push bar which moves in a direction extending toward the opposite side of the door from the side having the push bar when the push bar is pressed toward the door, a guided member mounted within said opposite side margin of the door guided for reciprocal movement normal to the edge of the door, said member including cam surfaces complementing the cam surfaces associated with said push bars operable to produce movement of the member inwardly from said side edge to a retracted position with movement of either of the push bars toward the side of the door having the push bar, a keeper adjustable to hold said member in a retracted position, a keeper release including a detent projecting outwardly from said edge of the door adapted to brush against the structure defining said opening and actuatable to release the keeper from its position holding said member in its retracted position, biasing means for urging said member toward said side edge on release of the keeper means, and a bolt joined to said member shiftable to a position extending out from said side edge under the urging of said biasing means.

Claim 8

The combination of claim 5, which further comprises a guiding support mounted within said opposite side margin of the door, and wherein said member is mounted for reciprocal movement within said guiding support, said keeper being mounted on said guiding support.

Claim 9

Apparatus for releasably retaining in a closing position a hinged, double-acting door which is swingable in opposite directions in a door opening to open and close the same, said apparatus in operative condition comprising a movable bolt mounted on said door for movement between extended and retracted positions relative to an edge thereof, operable when in its said retracted position to allow free swinging of the door in said opposite directions, and when in its said extended position, and with the door in a closing position, releasably to retain the door in such position, a pair of independently movable door actuators mounted on opposite sides of the door, each including a camming means, and each being movable with a door-opening force applied thereto to effect opening of the door, movable bolt-moving means including camming means operatively interposed between said actuators and said bolt, yieldably urging the latter toward its said extended position, the camming means in said bolt-moving means being constructed to coact with the camming means in said actuators, movement of either actuator causing such coaction between its camming means and the camming means in said bolt-moving means, and effecting placement of said bolt in its said retracted position, a keeper disposed adjacent said bolt operable automatically and releasably to hold the bolt in its said retracted position with movement of the bolt thereto from its said extended position, and a keeper release including a detent projecting from said edge adapted to brush against the structure defining said door opening, said keeper release being operable with such brushing to release said keeper, thus to release said bolt for movement toward its said extended position.

Claim 10

Apparatus for releasably retaining in a closing position a hinged, double-acting door which is swingable in opposite directions in a door opening to open and close the same, said apparatus in operative condition comprising a movable bolt mounted on said door for movement between extended and retracted positions relative to an edge thereof, operable when in its said retracted position to allow free swinging of the door in said opposite directions, and when in its said extended position, and with the door in a closing position, releasably to retain the door in such position, a pair of independently movable door actuators mounted on opposite sides of the door, each including a camming means, and each being movable with a door-opening force applied thereto to effect opening of the door, movable bolt-moving means including camming means operatively interposed between said actuators and said bolt, yieldably urging the latter toward its said extended position, the camming means in said bolt-moving means being constructed to coact with the camming means in said actuators, movement of either actuator causing such coaction between its camming means and the camming means in said bolt-moving means, and effecting placement of said bolt in its said retracted position, a keeper disposed adjacent said bolt operable automatically and releasably to hold the bolt in its said retracted position with movement of the bolt thereto from its said extended position, and a keeper release including a detent projecting from said edge adapted to brush against the structure defining said door opening, said keeper release being operable with such brushing to release said keeper, thus to release said bolt for movement toward its said extended position.

Claim 11

The apparatus of claim 7, wherein said camming means in said bolt-moving means comprises a pair of cam surfaces that extend along oppositely inclined planes, and the camming means in said actuators each comprises a cam surface complementing a different cam surface in said bolt-moving means.

Claim 12

The apparatus of claim 7, wherein said bolt-moving means includes a movable member, and which further comprises a guiding support mounted on the door, which support freely receives said movable member, and wherein said keeper includes a movable element mounted on said guiding support and actible on said movable member.

Claim 13

The apparatus of claim 9, wherein said keeper release is mounted on said guiding support, and is engageable with said movable element.

Claim 14

In combination with a double-acting door hinged along a side margin for swinging movement inwardly and outwardly from a position closing a door opening which is defined by structure bounding the door, with such structure including a plate substantially paralleling an edge of the door, mechanism for positioning the door with such closing the door opening comprising a bolt mounted on the door having extended and retracted positions relative to said edge of the door, a cutout in said plate defining a bolt well positioned to receive said bolt with the latter extended and the door in its closing position, a movable door actuator on each side of the door, each being movable with a door-opening force applied thereto, bolt-moving means interposed between said bolt and both of said actuators, operable to place said bolt in its said retracted position with movement of either of said actuators, a removable projection mounted on said plate adjacent said cutout, and detent means mounted on said door adapted to brush against said projection with movement of the door inwardly or outwardly, and to produce with the bolt in its retracted position and on so brushing the projection movement of the bolt to its extended position.

Claim 15

In combination with a double-acting door hinged along a side margin for swinging movement inwardly and outwardly from a position closing a door opening which is defined by structure bounding the door, with such structure including a plate substantially paralleling an edge of the door, mechanism for positioning the door with such closing the door opening comprising a bolt mounted on the door having extended and retracted positions relative to said edge of the door, a cutout in said plate defining a bolt well positioned to receive said bolt with the latter extended and the door in its closing position, a movable door actuator on each side of the door, each being movable with a door-opening force applied thereto, bolt-moving means interposed between said bolt and both of said actuators, operable to place said bolt in its said retracted position with movement of either of said actuators, a removable projection mounted on said plate adjacent said cutout, and detent means mounted on said door adapted to brush against said projection with movement of the door inwardly or outwardly, and to produce with the bolt in its retracted position and on so brushing the projection movement of the bolt to its extended position.