Walter S. Newhall Co. v. Baltimore & O. R.

ROSE, District Judge.

The plaintiffs are the owners of letters patent No. 1,044,230, issued to them November 12, 1912, for an apparatus for thawing material in freight cars. They say the defendant, the Baltimore & Ohio Railroad Company, has infringed.

The quickest way to unload a car of coal or similar material is to lift the car up and turn it over. It is the cheapest, also, where the volume of traffic to be handled is large enough to justify the expense of installing the necessary machinery. It has at least one drawback. The coal may be damp or wet. In cold weather it will freeze. When…