William Burnham Woods

“ It appears from the evidence that railroad locomotive wheels are composed of two parts,-the body of the wheel, called the wheel-centre, and a tire which surrounds it, substantially in the same manner in which the tire surrounds the felloes of an ordinary wagon wheel. ”

“ It seems quite clear from the present form of his specification, and from the fact that his application for a patent was twice rejected, that he was compelled by the Patent Office to narrow his claim to its present limits before the commissioner would grant him a patent. In doing this he neglected to amend the descriptive part of his specification. He cannot go beyond what he has claimed and insist that his patent covers something not claimed, merely because it is to be found in the descriptive part of the specification. ”

“ In shrinking the tires on the wheels, the practice usually followed at present is to turn the wheel-centre, bore the tire in a cylindrical form, and rely solely upon the contraction of the tire by cooling to retain it upon the wheel. ”