Page:Popular Science Monthly Volume 88.djvu/477

 Popular Science Monthly

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��A Simple Gas-Pressure Regulator

A STEADY gas pressure is often desirable but seldom obtainable di- rect from the main. The writer, desir- ing to use gas as fuel for six small in- cubators, found the regulator shown in the accompanying diagram very simple to construct and extremely effective.

The tank used was a five-gallon, gal- vanized iron oil tank. The division shown is cut from a piece of galvanized iron and the pipes are fastened into place with locknuts and leather washers, be- fore it is soldered into place, which should be about one-third the way up the bottom. The center pipe is P/i' stand- ard and extends to the bottom, forming a conductor for the oil and a brace for the dividing diaphragm. The gas pipes are Y/^ standard, and are fastened firmly to the wood brace at the top of the tank. The regulating valve is an ordinary gas cut-off with an extended arm riveted to

��its "T" lever.

���This simple device will regulate an uneven gas pressure from the main

��The arm which connects the valve lever SUPPLY with the float, is bored in a number of places, which allows for set- ting. This ad- j u s t m e n t is necessary only once. The wood float has two V^ holes bored through it as shown, and so uses the two gas pipes as guides. The weight of the float must, of course, be suf-

��cient to operate the valve, which may be suppled up a little with laundry soap.

_ Pour in enougli thin, cheap machine oil_ to fill the bottom compartment and raise the float al)out an inch, set the valve about two-thirds open and turn on the gas. With no burners going, the float should rise so that the valve is nearly closed. With all burners going it should be an inch above where it stood before the gas was first turned into the regulator. — E. C. Graves.

��An Emergency Drill Press

DRILL press for emergency jobs can be made in a few minutes pro- vided a breast drill is available. A

��A

���This emergency drill press is simple to rig up, and will be found very useful

wooden arm between two and three feet in length should be pivoted at one end to a wooden support that is fastened by nails or screws to a stout base. A few inches from the pivot, a bolt should be inserted through the arm and the handle of the drill. Place the lever un- der the leff arm ; manipulate the drill with the hands. — N. S. McEwen.

A Handy Chuck for a Small Lathe

A CHEAP and useful chuck for a polishing lathe, can be made as fol- lows : Cut from a IVl''" brass tube, a piece about 1" long. File the edges true and solder at one end a fairly thick disk of brass. In the centre of this, drill a hole and insert and solder a short length of steel shafting, which will serve as a grip for the drill chuck when mounted

��OlvcJi on Ljihe

���A good substitute for a scroll chuck

on the lathe. At equidistant points around the circumference of the cup, drill and tap to fit three steel screws. The article to be turned is held securely by the screws. — H. Vincent.

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