Week 18 Machinery. Some words that come to mind when I look at this picture. Sprocket wheel shaft iron wire diff pinion prong rack ratchet tine tooth shaft nut bolt axle screw thread bush spindle track cog gear tool implement motor engine device grindstone doohickey gaff gear gizmo grabber jig mechanism outfit tackle, thingamajig whatchamacallit whatsis rusty stuff grille plough blade bird droppings cobwebs and spiders. Then I think what a lot of work to restore it.