This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
A small torch, that will give a very fine and hot smokeless flame, can be made from a piece of glass tube, about 4in. long, and 4 ft. of rubber tubing. The glass tube is heated in the center
A Torch Made of Glass and Rubber Tubing, to be Used on an Ordinary Gas Jet until it is red, then the ends drawn apart so that the tube will have a small diameter. After the glass has cooled, make a small scratch with a file on the thin part and break it. One of the pointed ends is connected to a straight piece of glass tube with a short piece of the rubber tube, as shown in the sketch. A small hole is cut in the side of the piece of rubber to admit air to the gas. The torch is connected to an ordinary gas jet. - Contributed by E. K. Marshall, Oak Park, Ill.