Patent GB-413871-A (GB)
Title: Improvements in or relating to doors, casement windows and the like
IPC: E05D15/50
Filed: 1933-07-15
Abstract: 413,871. Hinges. PATTERSON, D. E., Bydown, East End Lane, Ditchling, JAMES, F. H., 68, High Street, Brighton, PATTERSON, J., 5, Sackville Road, Hove, TREGASKISS, A. E., 11, Atlingworth Street, and PATTERSON, S., 5, New Steine, both in Brighton, all in Sussex. July 15, 1933, No. 20081. [Class 65 (ii).] In a door or the like provided at each edge with pintles adapted to engage sockets in the frame so that it can open about either edge, the pintles at one edge are prevented from being withdrawn from their sockets unless those at the other edge are in their operated or projected position by a transversely movable rod, the ends of which engage in notches, with inclined walls, in two of the pintles; means are also provided to prevent projection of the pintles at the free edge when the door is open, thus preventing retraction of those acting as hinges. Fig. 2 shows the pintles at one edge of the door in their projected position, the arrangement at the other edge being similar. The pintles f, g slide in sockets u in the corners of the door, being prevented from turning therein by screws q engaging keyways in the pintles, and engage sockets h in the door frame ; the pintles are connected to an operating disc c with handle so as to move together. The lower pintle g is formed with a notch k for engagement by one end of a rod m which is transversely slidable on the door ; the pintle g at the other edge of tbe door has a similar notch for engagement by the other end of the rod m, and the rod is arranged so that when one pintle g is withdrawn from its socket h in the door frame the inclined surface of its notch k forces the rod m into engagement with the notch of the pintle g at the other edge of the door to prevent withdrawal of that pintle, so that the door can never be entirely detached from its frame, the pintles at one edge at least being in engagement with their sockets h at any time. In order to prevent retraction of the lower pintle g unless the door is closed, a screw o in the socket h engages a circumferential groove in the pintle, the end of the pintle being provided with a longitudinal groove p which registers with the screw o when the door is closed to permit retraction of the pintle. The upper pintle f at each edge is cut away at v to receive a spring-pressed bolt s when the pintle is retracted ; the bolt thus prevents projection of the pintle (and retraction of the pintles at the other edge) when the door is open, but when the door is closed the end of the bolt engages a cam surface t, Fig. 3, on the door frame and the bolt is moved against its spring until a cut-away portion w thereof registers with the pintle and permits its projection. The pintle may be formed with a second cut-away part similar to v to register with the bolt s when the pintle is projected, the cam surface t being continued as shown dotted to force the bolt further out when the door is rotated about this pintle, so as to bring the part w out of register with the pintle and thus to prevent withdrawal of the latter when the door is open.