GB403308A - A door-securing device with an arm on the door and a swingable rail on the frame - Google Patents

Abstract

403,308. Door stays and fasteners; hinges. HELBIG, P., 64, Boddinstrasse, Neuk÷ln, Berlin. June 20, 1933, No. 17515. Convention date, June 25, 1932. [Classes 65 (i) and 65 (ii).] A device for limiting the opening of a door and for securing it in the closed position comprises a slotted bar d, Fig. 5, pivoted to a plate e on the door frame and adapted to engage a bracket b fixed on the door, the arm b having a flat T- head c with a narrow neck to fit the slot in the bar d ; the door can be released for full opening from the inside, and also, when in the limitedopening position, by means of a key from the outside. The invention consists in an improved pivot for the arm d, comprising a pin i carried in lugs g, h on the door-frame plate e and passing freely through the end of the bar d, which has a ball-shaped projection k, Fig. 1, engaging a corresponding recess in the lug g, a spring m being carried on a sleeve n on the pivot and bearing in a recess formed by a flange l on the arm d. The arm d is free to move to some extent in the plane of its pivot axis, against the force of the spring, to allow it to be disengaged from the bracket b and to accommodate movements of the door; the projection k serves to ensure that when the door is closed the bar d is in the correct position to pass freely over the T-head c of the arm b. The bar d can only be passed over the head c of the bracket b when the door is closed, and it then engages the nose of a member s fixed on the door-frame to keep it from swinging out of position for re-engagement when required. In order to disengage the bar d from the bracket from outside the door, the door is opened as far as possible to permit the entry of a hand, and a key v is placed on a pivot pin o provided at the bottom of the plate e ; the door is then closed, and during this movement the bar d engages a shoulder u in the key v, the key being thus caused to rotate on its pivot o and therefore camping the bar d off the end of the bracket b. In order to fasten the door in the completely closed position, a stop piece q, shown in underneath view in Fig. 2, is placed on the pivot pin o when the door is closed and the bar d is in engagement with the member s, and the bar d is then moved to engage with the bracket b and the member q. A second pin corresponding to the pin o is provided at the top of the plate e so that this plate can be inverted for use with doors opening the other way.