Goodyear welted Welt Construction welted sole Goodyear Wikipédia welted construction His son invented the method in 1869 welt Source Goodyear welt Welt Construction Goodyear Welt part of a shoe welt Goodyear Welt Goodyear welt Welt Construction Goodyear Welt Goodyear welt Goodyear welt construction Welt Goodyear welted part of a shoe Welt construction Welt Welt Welt Construction