318 FEDEEAL BEPOBTBK. �sufflcieut spaee is left between the protector and the bell, which is occupied by the perforated rim, g, and the top of the rim is so curved and deflected in and upward, as to prevent currents of exterriai air passing down the globe and extinguishing the flame ihe globe, also, rested upon a perforated plate or disk, E, whieh formed the bottom of the globe, and which, also, by its perfora- tion, admitted the air freely, so that the same could become heated, and crowd, so to speak, into the bell, so as to create the blast required for furnishing the a-^r to the burner." �"On the trial of this case, several experiments were performed in the pres- ence of the court, for the purpose of illustrating the operation of the varions elements of the irwincombination, which seemed todemonstrate — First. That it is essential to the operation of this lamp that a space should be left between the globe and bell sufflcient to allow the escape of the products of combustion. If this space was wholly elosed, so that the products of combustion were driven around and into the air-chamber and into the flame, the light was nearly extinguished and the operation of the lamp defeated. Second. That provis- ion must be made for admitting an ample supply of air into the globe at its base, so that it might rise in the globe, become heated, and be driven into the bell and tube. �" When this supply of air was eut ofE, the flame died down, and the opera- tion of the lamp was Suspended." �In re-issue 8,598 the patentee retained, in the same language, three of the original claims, of which I have given an example, and introduced two broader claims, by which he claimed the various parts in the following manner : �" (1) In a lamp or lantern the combination of the f ollowing elements, viz. : a feed conduit or conduitSj which supply fresh air to the burner to support combustion ; a wick burner, protected by a deflecting cone or jacket ; a globe or protector surmounting the burner and open at its open end ; and a device surmounting the globe, constructed and arranged to operate as an atmospheric injector and ejector to inject fresh air to the feed conduits from the exterior atmosphere, and eject the contents of the globe from the top thereof, whereby a protected and continuous air-circuit is constantly maintained through the feed conduit or conduits, burner, and globe, substantially as described. (2) In a lamp or lantern the combination of the following elements, viz. : a globe or protector surmounting the burner and provided with openings at the bot- tom for the passage of air independently of the burner; a wick burner pro- tected by a deflecting cone or jacket; a device for injecting and ejecting air at the top of the globe; and a conduit or conduits for supplying fresh air to the burner; substantially as described." �The patent No. 104,318, no heated air is admitted into the tubes, and the entire supply of oxygen is from fresh air. It is insisted by the defendant that this patent is limited by its terms to the peculiar construction of its devices for the admission and ejection of air. �In 1879 the Buffalo Steam Gauge & Lantern Company had com- ��� �
