House of Commons, Great Britain, Report from the Select Committee on Steam Carriages… (1831)
“ Hancock's wheel is not cylindrical, it is rather conical, and a conical wheel must be more injurious to the roads than an upright one, although in this case, the wheel being narrow, the difference cannot be very great. On the principle on which you state that you are forming your Carriages, shall you be enabled to diminish the weight greatly?—The carriage I am now constructing weighs two tons without water, it is made stronger because there are not any practical data yet respecting the parts. ”
