GB685404A - Improvements in or relating to magnetic mechanism for catches for sliding doors and the like - Google Patents

Abstract

685,404. Magnetic fastenings. MOORE, F. Oct. 24, 1951 [Dec. 1, 1950], No. 29418/50. Class 44. A latch e.g. for sliding doors 11 comprises a pair of members 3, 4 mounted for vertical movement in casings 10 in the door edges and carrying magnets 1, 2, the member 3 also carrying a latching hook 5 for engagement with a crossbar 16 on the other casing and being provided with sufficient space to the rear in the casing to allow it to fall into an inclined unlatched position as in Fig. 3 so that the hook 5 does not project from the door edge. The member 4 has an opening 6 to receive the hook 5. The casings are closed at the front by plates 12 having openings to pass the hook 5 and the pole-pieces of the magnets which lie flush with its outer surface tapered projections 21 on member 3 enter notches 22 in member 4 to ensure their correct alignment. Either member may be lifted to release the hook from the cross-bar 16 by push-rods 17 having collars 18 acting through short tubes 19 Fig. 1 shows the parts in the latched position the magnets attracting each other and.preventing rattling. If either push-rod is raised e.g. by a handle both members move upwardly due to the attraction between the magnets and the doors may then be pulled apart, the member 3 falling obliquely as in Fig. 3. The tube 19 on this side has oblique end surfaces and a corner abutment 23 is provided to ensure that the member 3 rocks backwardly. When the doors are closed the magnets attract each other and the member 3 returns to the vertical position forcing the hook to latch with the bar 16 as shown in Fig. 1.