American windmill

This windmill was unvented by Daniel Halladay in 1854.It was later patented by Halladay , this windmill dint not require attention by the operator. Initially the windmill was build from wood and required lot of maintenance. As time went the wood was replaced by metal and found lot of reliability .Also there was improvement with self-oiling gearboxs and pivoting wind wheels.used by windmill. This were more efficient and maintenance free.