An essay on the construction of wheel-carriages, as they affect both the roads and the horses : with suggestions relating to the principles on which tolls ought to be imposed, and a few remarks on the formation of roads (1820)
Fry, Joseph Storrs, 1766-1835 · Bristol : Printed by T.J. Manchee · leaf 27
over an obstruction. Itmay be said that tlie velocity, or momentum,which a coach may have acquired, is suffi-cient to carry the wheel over the object. Beit so. But the coach does, by going overthis object, lose just as much of its momen-tum as is equal to the power necessary tocarry the wheel over… … CHAPTER II. 1. Conical Wheels injurious, both to Roads andHorses.—2. Conical Wheels wear out fasterthan Cylindrical ones.—3. Cylindrical Wheelsand Axles best. Subject to only three-fourthsthe usual Toll.—4. High Wheels not disad-vantageous going up-hill.—5. Broad WheelWaggons extremely injurious to…
