Abstract: A lock for doors or the like with a case (8) having a longitudinal axis (9), a locking member (16) mounted in the case to be slidable parallel to the longitudinal axis, a bush (29) mounted in the case to be rotatable about an axis of rotation arranged at right angles to the longitudinal axis, and a drive having driving parts (35, 37, 21, 23) on the locking member and on the bush for converting rotary movements of the bush into sliding movements of the locking member, the locking member being slidable by rotation of the bush at least out of a locking position into a retracted open position. So that the driving parts and the bush can be made sufficiently stable even with a small over-all height or a small total cross-section of the lock, the driving parts are arranged both in the locking position and in the open position of the locking member (16) in a space in the lock case (8) located between the closing member (16) and the bush (29).

Abstract: In door hardware, the handle 1 on the inside of the door and the handle 2 on the outside of the door are interconnected via respective halves 21 and 22 of a handle pin. The door handles can be secured by means of set or clamping screws 25,26 with the handle halves. Moreover there are two escutcheon plates 6 and 7 which, following the mounting of the hardware to a door panel, are clamped against the door panel. The setscrew 26 for the handle 4 on the outside of the door is arranged in the region behind the outside of the escutcheon plate 7 on the outside of the door, namely preferably in such a way that it is invisible and inaccessible from the outside. The cooperation of the setscrew 26 and the handle pin half 22 permits preferably a finely stepped axial adjustment of the handle pin half with respect to the handle 2 on the outside of the door. The door handle is secure against dismantling from the outside and remains operable in the event of fire.

Abstract: A catalyst for oxidation of SO.sub.2 to SO.sub.3, which can be used as a fluidized bed catalyst. An abrasive resistant support is formed by adding silica filler and a clay binder to a silica sol; adding hydrated magnesium oxide to the resulting mixture, to form a gellable composition; dispersing the gellable composition in a liquid to form gel spheres; calcining the spheres; and treating them with an acid to remove acid soluble components. After the acid treatment, the support is impregnated with an alkali metal vanadate solution and calcined.