of withstanding thermalc langes and inclement conditions. The device is mader -eferably of sheet zinc, consisting of a band of themetal adapted to be coiled snugly about the vent pipe.-As usually made it is formed with a straight upperportion to fit the sides of the pipe, and a flaring baseportion… … FASTENING DEVICE FOR VENT PIPES. coil in such position that when the coil is tightlywound around the pipe, the two angle pieces will near-ly meet and can be drawn firmly together by means ofbolts. The lower edge of the coil is preferably pro-vided with a flange, which establishes a firmer seatingof…
Patents · Device · Machine · Object · Scientific American · Adapted · American supplement · American september · Horse power · Canadian patent · Thill coupling · Blue gum · Sewing machine · Typewriting machine · Trade mark
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