Locomotive Stoker Co. v. Hanna Stoker Co.

KNAPPEN, Circuit Judge.

This suit involves several patents in the locomotive stoker art, which, as now practiced, includes generally the transferring of coal by gravity or power from the tender to a point below the engine deck, its elevation therefrom to a point or points above the fire door, and its proper distribution therefrom by projection through gravity and/or other means— sometimes including steam blasts — over the surface of the fire. The art provides also for underfeeding coal as well as its overfeeding, but the underfeeding features are not directly involved in the litigation before…