Rotary apparatus comprising a die cutting station followed by a series of segment forming stations, a levelling station and a winding station continuously works a strip of lead into a configuration suitable for battery grid plates having expanded segments forming reticulations extending inwardly from...http://www.google.es/patents/US4247970?utm_source=gb-gplus-sharePatente US4247970 - Apparatus for forming expanded metal such as battery grids
Apparatus for forming expanded metal such as battery grids
