. Railway mechanical engineer . ose connections are placedabove and below it respectively. With the exception of theaddition of connections and ports for the latter two lines, thepassenger equipment is practically the same as that forfreight cars. Standard M. C. B. gaskets are used in thesignal and brake ports while special rubber gaskets with highheat resisting properties are used in the steam ports. All areeasily inserted or removed. The passenger car connectors have a total weight of 40 lb.,while the weight of the freight connector is 35 lb. With theexception of the spring, the parts are al
. Railway mechanical engineer . ose connections are placedabove and below it respectively. With the exception of theaddition of connections and ports for the latter two lines, thepassenger equipment is practically the same as that forfreight cars. Standard M. C. B. gaskets are used in thesignal and brake ports while special rubber gaskets with highheat resisting properties are used in the steam ports. All areeasily inserted or removed. The passenger car connectors have a total weight of 40 lb.,while the weight of the freight connector is 35 lb. With theexception of the spring, the parts are all malleable ironcastings, the head being galvanized to prevent corrosion. THE GUN TAP On page 429 of the August, 1916, issue of the RailwayMechanical Engineer there was published a description ofthe Gun tap, manufactured by the Greenfield Tap & DieCorporation, Greenfield, Mass. We are informed by themanufacturers that the statement that this tap gets its namefrom the fact that it was originally designed for use in gun zfl^.. The Passenger Connector Attached to the Coupler the length of the steam and signal hose, these being some-what shorter than the standard. The signal and brake hoseare coupled to the connector head by a union of the bayonetjoint type, which requires but a quarter turn to the right orleft to couple or disconnect. The hose end of this union isfitted with a special type of gasket which tends to tightenunder pressure and insures freedom from leakage at thispoint. The steam hose is coupled to the connection by athreaded union which is easily disconnected with a wrenchor hammer. Special interchange couplings are provided foruse in making connections with cars not equipped with theRobinson connector. These consist of short sections of metaltubing, to one end of which is threaded a hose coupling ofthe standard type and on the other end of which is provideda bayonet coupling to fit the socket on the end of the hosein the case of the signal and brake hose, and a threa
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