Allowed the horse to walk for miles on hard surfaces without wearing down their hooves.
Oscar E Brown patented an improved double or compound horseshoe, which consisted of; an upper shoe secured to the hoof of the animal and a lower auxiliary shoe irremovable attached to the upper shoe. The object of invention was the provision of a secure and reliable lock for fastening the lower shoe to the upper shoe, which will permit the lower shoe to be readily applied and removed from the upper shoe whenever it becomes necessary to renew the lower shoe or resharpen it calks. U.S. Patent 481,271