Hi there! I have come across a string of porcelain insulators and am looking for more information on this specific one. I believe they are suspension insulators but I am not 100% certain. They have "LOCKE" stamped on the cement piece that holds the insulator in place. The insulator is a brown porcelain and has "LOCKE 1941" stamped on the side. The one that I have has 9 insulators in a string (for lack of better word) and all have the same stamp. Any help would be greatly appreciated!!