Abstract: A compartment closure tilt assist mechanism that, independently of the operation of any counterbalance means in the compartment hinges, is effective to reduce the opening or lift effort for raising the closure to provide access to the compartment therebeneath. The assist mechanism comprises a lift arm 17 supported on a support strut 13 extending longitudinally of the compartment. Interposed between the lift arm and support strut are lift arm support links that are swingable about a pivot axis located below the strut. The links extend from the pivot axis angularly upwardly above the strut and support the lift arm between the closure and the strut in closed position of the closure. Over-center biasing means 33, coupled to the support strut and to the lift arm, are operative to reduce the lift effort to raise the compartment closure.

Abstract: A releasable locking mechanism for maintaining the door of a merchandising machine in an open position for loading or servicing. Respective link arms pivotally interconnected at one end are pivotally coupled at their other ends to the door and to the cabinet for movement to an aligned position limiting further movement of the door away from the cabinet. A spring biases one of the arms from its aligned position against a stop to provide an automatic locking action, while an extension of the link arm coupled to the door permits ready kick release of the arms from their locking position.

Abstract: A door guard for a swingable door that is mounted in a doorway having a door closer affixed to the doorway permits the door to open beyond the point which would normally be the widest open position allowed by the door closer and slows the rate of movement of the door so as to prevent damage to the door, door closer, or doorway. The door guard includes a flexible resilient arm extending transversely across the inside of the door and connected to the door closer at a point intermediate its ends, said arm is anchored at its inner end to the door and has its outer end releasably attached to the door, and catch means mounted on the door for releasably attaching the outer end of the arm to the door. When a force such as a gust of wind causes the door to fly open, such that the door closer reaches its fully extended position, the outer end of the arm is released by the catch means and the arm flexes to permit the door to continue opening.

Abstract: An overcenter door control device is disclosed for resiliently holding a door in a predetermined open position after being moved past dead center in one direction, and resiliently holding the door closed after being moved past dead center in the opposite direction.

Abstract: An automatic door closer includes a closer shaft to which the door to be closed is connected for turning movement therewith about the axis thereof, and spring means biasing said closure shaft to a position in which the door is closed. The door closer includes further means for releasably holding the closer shaft and the door connected thereto in any adjusted position when the door is opened beyond a predetermined angle.

Abstract: This invention relates to a door closer and holder having a longitudinally movable rod containing a niche which rests against a stop plate to hold the door in an open position. A rotating cam is positioned adjacent the niche in the rod so that further movement of the rod in a longitudinal matter rotates the cam causing the rod to ride over and bypass the stop plate allowing the door to close.

Abstract: An auxiliary lock is disclosed which is intended to be used as a night lock in combination with the hinge of a conventional door. The device includes an elongated cross bar and a plurality of adjustable stop members which project from and are threadedly received in said cross bar and are adapted to engage the surface of the door and the door jamb or wall. The cross bar also carries a spring-loaded connecting means which is adapted to be engaged with the hinge pin of a conventional door hinge to thereby hold the cross bar in place on the hinge and the stop members in engagement with the door and door jamb. The bar is pivotally connected to the hinge pin by the connecting means so that it may be rotated 90.degree. to permit normal operation of the door, and in this regard secondary stop members are provided to function as normal door stop members when the device is in its inoperative or unlocked position.