RECENTLY PATENTED INVENTIONS. Engineering. Ohio. A gas inlet leading to the combustion chamber of this furnace has checker brick outside the chamber to spread the gas the gas inlet being substantially horizontal where it connects with the combustion chamber and there being a series of jet openings for discharging hot air nace is started the gas and air are admitted in proper proportions increasing according to the heat in the chamber until the desired temperature is reached the gas and the air blast issuing from the jets striking each other a short distance from the bridge wall so that the heat will expand in the combustion chamber and in the working chamber or hearth. Wilmington N. C. This is an improvement more es pecially designed for use on air pumps of condensing valves to prevent excessive wear of the valves and the lining in the air pump. The invention consists of one or more air valves for the water delivery valve to permit the escape of air previous to and separate from the dis charge of the water through the water delivery valve. Railway Appliances. HOPPER BOTTOM CARRichard Blackston e Central City South Dakota. This invention relates to drop bottom cars for carrying coal ore etc. and provides for the protection of the door-suspending chains from the material loaded in the car thus permit ting an easy opening of the drop bottoms. In the car is a chain-guiding tube having at its upper end a flange f or attachment to the housing of the chain beam the lower end of the tube being bent to conform to the side floor guides the entrance of the chain. Elizabeth City N. C. This coupler comprises two balls receive the balls the mortises being open at the top to permit the ball to drop in and having apertures leading to the front for the chain or rod connections. A ball holder has a pivoted arm or portion provided with a cup ball receiver in which is a central pin adapted to enter the opening in a ball the receiver oscillating from the position in which it retains the
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