(GB2080723-B)      In an injection mould for making a battery case divided by internal walls into compartments for reciving the electro-chemical components of the battery, the compartments are defined by a plurality of spaced elongated cores (24). Each core has on its surface elongated grooves (26) of mortice shape within which are slidable ejector bars (30) of complementary shape.    The leading ends of the bars are provided with recesses (32) and in the retracted position of the bars the walls (88) of the recesses and the walls (90) of the grooves define cavities in which fins which project from the compartment defining walls are formed. The fins, act to resiliently receive and hold in place electro-chemical components of varying size.    During initial movement of the ejection rods the moulded case is pushed from the cores, the fins being withdrawn without undue stress longitudinally from the cavities, in which they are moulded.    (DE3128223-C)      Injection mould comprises an outer mould for forming the outer wall of the battery casing and a core having slot-shaped recesses for forming these flexible ribs on the cell walls. The core comprises a core component in which an ejector appts. has ejectors sliding in slots to eject the moulding.    The core component comprises a number of slide tracks, each designed for one ejector, and the ejectors sliding in these tracks have the same general shape, but are cut back on part only of one or both lateral faces to provide, between the ejector and the wall of the guide track, a slot-shaped recess which acts as the mould zone for forming the flexible rib. The guide track and corresponding ejector are dovetail shaped in cross-section. Thus, as the ejector slides alongs its corresponding dovetail shaped track, it ejects the moulding by means of the flexible rib formed in the space between the ejector and its corresponding walls of the dovetail track.    USE/ADVANTAGE -   For the prodn. of battery casings, esp. lead acid batteries for automobiles, A casing with integrally connected, flexible ribs, can be produced without the ribs being torn or damaged during ejection from the mould. (12pp)