. The sanitary news : healthy homes and healthy living : a weekly journal of sanitary science. , *This size has not been and brick, square arch. Frank P. Davis. March 6, 1886.] THE SANITARY NEWS. 179 TO PREVENT THE FREEZING OF SOIL-PIPES. Mr. Thomas C. Boyd, president of the Chi-cago master plumbers association, has had pat-ented an improvement in frost-proof ventilatorsfor soil and other pipes. In the accompanyingdrawings, A represents a bui
. The sanitary news : healthy homes and healthy living : a weekly journal of sanitary science. , *This size has not been and brick, square arch. Frank P. Davis. March 6, 1886.] THE SANITARY NEWS. 179 TO PREVENT THE FREEZING OF SOIL-PIPES. Mr. Thomas C. Boyd, president of the Chi-cago master plumbers association, has had pat-ented an improvement in frost-proof ventilatorsfor soil and other pipes. In the accompanyingdrawings, A represents a building provided withthe usual soil-pipe B, which is extended upward insert a spiral flange around the pipe B to distri-bute the warm air uniformly around it. The operation of the device is as follows: Thewarm air from the building ascends into a spacebetween the pipe B, and the flange or pipe, D,and on becoming cool, descends to give place towarm air. Thus a warm air current is continu-ally maintained around the pipe B which, it isbelieved, will prevent the formation of frost. B-ii through the roof, a, to serve in the usual manneras a ventilator for the drain C Great difficultyand inconvenience are usually experienced fromthe fact that the warm vapors arising from soil-pipes become congealed upon contact with thecold, protruding, end of the ventilating pipe, andform hoar frost, which obstructs the pipe andprevents the free flow of the air through result is siphonage of the traps which areconnected with the soil-pipe, and an influx ofsewer-gas into the building. This invention hasreference to utilizing the warmer air of the build-ing to prevent the pipe from freezing. The ex-posed portion of the pipe is enclosed in a sec-ondary pipe or receptacle, preferably closed atthe top around the mouth of the ventilatingpipe, and extending through the roof into thebuilding below, the lower end of the enclosingportion being open. The enclosing portion orcase, may consist of a
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherchica, bookyear1882
