Method of sealing an intercell connection in a multi-cell electric storage battery

In a method of sealing an intercell connection in a multicell electric storage battery in which the plates of neighboring cells are connected by a connector bar passing through an opening in the upper part of an intercell partition, which comprises placing over the intercell connector bar a mould in the form of a single moulding head and having a marginal portion fitting against each face of the partition and defining a moulding cavity surrounding the bar on each side of the partition, the mould comprising two halves, lying on opposite sides of the partition and each half comprising a body which forms one side wall of the cavity positioned against one side of the bar and on the opposite side of the bar provides guides for a closure member which is capable of moving substantially horizontally to closed position to completely surround the remaining sides of the bar, introducing into the mould a plastics material which is compatible with the partition so as to seal the gap between the margins of the opening and the connector bar, moving the closure member to an open position, and moving the sealed intercell connection downwardly relative to and out of the mould, the improvement comprising a cutter being provided on the end of the top portion of the closure member, moving the closure to a closed position and thereby gouging a groove in an upper surface of the bar so as to close the cavity throughout the whole width of the upper surface of the bar.