Abstract: Battery cell cups are filled with compressed depolarizer mass by performing a plurality of mass insertion and compression strokes for each cup. In the first stroke, a mass plug remaining from the compression strokes for the preceding cup is introduced into the cell. Overdosage leaves a mass plug for the next cup.A rotary machine performs the successive strokes at work stations spaced around the periphery. Numerous cups can be processed simultaneously by the machine.Automatic control of stroke pressure is provided.

Abstract: The method of producing galvanic primary cells including introducing an overdosage of depolarizer mass into a prepressing form and compressing the mass to constant density, forming a pressed depolarizer element by pressing an overdosage of the depolarizer mass into a cell cup through a nozzle, separating the overdosage from the depolarizer element within the cell cup along a predetermined line and allowing the overdosage to remain within the nozzle, pushing the overdosage into the following cell cup as a mass plug and adding sufficient additional depolarizer mass to nozzle to provide an overdosage.

Abstract: An electric primary cell having a metal casing includes a cup electrode disposed in the metal casing and a cardboard sleeve in the metal casing between the latter and the cup electrode. The metal casing has an inwardly flanged upper edge and a cover disc having an outer edge is disposed on the metal casing. A resilient plastic material is disposed between the flanged upper edge of the metal casing, the sleeve, and the outer edge of the cover disc.