Cincinnati Car Co. v. New York Rapid Transit Corp.

L. HAND, Circuit Judge.

The first patent was for a vestibule between two ears in what is called an “articulated train.” This means that the adjacent ends of each ear on the train are carried by a single truck, thus avoiding the need of two trucks for each ear, and requiring but one more truck for the train than there are cars. The patent discloses such a train (part of whieh is the subject of the third patent), but claims only certain features of the vestibule, whieh secure to the passengers a safe passage from car to ear. To insure this it is necessary that such a vestibule shall rotate on…