ON THIS DAY: 2 January 1877
ON THIS DAY: 2 January 1877, Charles M. Tinker received U.S. Patent No. 187,881 for a delightfully inventive device: a dog-powered treadmill designed to churn butter. Tinker’s creation worked by having one or more dogs walk on a slanted tread-wheel or treadmill-style platform. As the dogs walked – or trotted – to keep their balance, … Read more