le. A COUPLING FOR THE AIR-PIPES OF RAILWAY- gether, so as to form a pair of tongs. One of these The implement is the invention of Isaac Smith, CARS. levers carries a single jaw, and the other a double jaw. South Bend, Washington. In the accompanying illustration we illustrate a The single jaw is… … nut securely. If it be so desired, a receptacle can be hung from the double jaw its sections can be automatically connected, and which is so mounted that it can move vertically and horizon- in order to receive a nut after hav- tally without danger of the parts’ separating. ing been removed from a…
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