I seem to be a little short- I need a few more LOCKE Hewletts to complete a string... Please note the difference in the two- The THOMAS on the left, has a larger, rounded, "hump" and of course says THOMAS clearly on the side, with all the assorted patent dates. ( pardon the clarity of this pic..) The LOCKE on the right, has the narrower "hump". and has the LOCKE stamping on top, or, it may have no mark at all... Another note on the LOCKEs- the standard Hewlett link does not fit into this insulator- The galvaized links that Nathan had do fit, but don't seem original... Any thoughts on this ?

Thanks !