1851 Great Exhibition: Official Catalogue: Class X.: Charles Ludovic Augustus Meinig
437. MEINIG, CHARLES LUDOVIC AUGUSTUS, 103 Leadenhall Street — Agent.
Portable galvanic battery of 120 elements, occupying the space of 12 cubic inches. Clockwork, for making and breaking contact. Patent portable galvanic chain battery, of 24 elements.
Portable interruptor for this chain. Invented by Mr. T. L. Pulvermacher,