By Jeff Kronenfeld Cliff Wixson is a throwback to America’s burly industrial past, much like the big machines his company keeps alive. When he started the business, it was just Wixson and a service truck. Now Cliff Co Repair boasts 20-plus employees, a fleet of vehicles, and a new 16,000 square-foot machine and repair shop. While standing beneath one of the shop’s multi-ton bridge cranes and the massive metal frame holding them up, it’s hard to imagine that Wixson and another