Diagram of a dog-powered vehicle driven by a woman, in which the dogs are shut up inside the front wheel devised on the same principle as a squirrel cage. This contrivance was described as follows by its inventor, F. H. C. Mey:
This invention relates to vehicles which move from place to place on roads, pavements, etc., and consists in an improved construction thereof.
A is the driving-wheel, which in this instance is in the front of a vehicle having three wheels, but may be in the rear, if preferred, or in any other location.
The animals being placed in this tread-rim, as represented in Fig. 2, and caused to work, will impart motion to the wheel and to the vehicle, as will be clearly understood.