Handy man's workshop and laboratory . main holes may be the samesize as the tubes in the otherfigure, or may be of any sizesuitable for the supply of gas re-quired. A plug, K, may be usedto regulate the height of the mer-cury in the U-tube. Should themercury become foul, it may beremoved by taking out this plug,cleaned, and replaced. The in-let tube is made in the shapeshown, its lower part beingturned down, so as to leave the proper space for the gas. Itsupper portion is threaded with a straight thread, so as to screwinto the block. When it is put in place, the lock nut L is s
Handy man's workshop and laboratory . main holes may be the samesize as the tubes in the otherfigure, or may be of any sizesuitable for the supply of gas re-quired. A plug, K, may be usedto regulate the height of the mer-cury in the U-tube. Should themercury become foul, it may beremoved by taking out this plug,cleaned, and replaced. The in-let tube is made in the shapeshown, its lower part beingturned down, so as to leave the proper space for the gas. Itsupper portion is threaded with a straight thread, so as to screwinto the block. When it is put in place, the lock nut L is screwedon firmly over the lead washer M. Then the hole N is drilledthrough the block and into the tube D. The outer end of thishole is closed by a screw plug provided with a lead washer. Ahole is drilled so as to intersect the hole N. This is continuedby the small hole O, which opens into the outlet B. A pointedscrew P serves as a needle valve to regulate the by-pass and supplyany amount of gas desired to keep the burner or stove Fig. 164—Another form of gasregulator 184 HANDY MANS WORKSHOP AND LABORATORY A gas-pipe thread may be cut on the extreme upper end of D,and the supply pipe screwed on directly. The hole B is tapped toreceive the iron gas pipe for the burner. The advantage of thisform over the other is that being entirely of metal it is unbreak-able and compact and eliminates any fear of fire. The operationis the same as that of the other form.—yj A HOME-MADE BAROMETER As is well known, a barometer is nothing more than a con-
Size: 1441px × 1734px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
