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As already remarked, pressure must not be sacrificed to steam flow. Lubricators. These are short pieces of tubing hollowed at one end by a round file of the same diameter as the bearings. A little "Tinol" is smeared over the surfaces to be joined, and the lubricators are placed in position and heated with the blow-lamp until the solder runs.
In the assembling of these parts a blowpipe spirit lamp or a little "Tinol" soldering lamp will prove very helpful. This piece must, of course, cover the steam ports in the cylinder. Take great care to make steam-tight joints here, and to have the plate parallel to the standards in one direction and to the cylinder in the other.
Push the spindle rod through the bearings, which must be adjusted until the rod can be revolved easily with the fingers. Then solder in the bearing with a "Tinol" lamp. The Wheel. Anneal this well by heating to a dull red and plunging it in cold water. Mark a circle of 1-1/4-inch radius, and draw radial lines 1/4 inch apart at the circumference from this circle to the edge.
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