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Bulbs, string of, 33 Capillary tube, drawing on larger tube, 9, 54 tubing, working, 43 Carius method, tubes for, 55 Closed circuits of tubing, 48 tubes, for heating under pressure, 55 Collecting glass for bulb, 29, 31, 32 Constricting a tube, 10 Crystallization of glass, see Devitrification. Cutting glass, 7, 25 Devitrification, 1, 2 Drawing out a tube, 9, 18, 19, 27 Flanging a tube, 11, 14 tool, 11 Gas-washing tube, 35 Glass, annealing, 4, 24 Glass, bending, 8 blowing, 13, 19, 20, 21, 24, 29, 31 collecting for bulb, 29, 31, 32 cutting, 7 defects, 2 grinding, 47 hard, 1 knife, 7 lead, 1 qualities desired, 1 rod and tube, joining, 45 rod, working, 44 shrinking, 18, 19, 22, 26 soft, 1 working temperature, 1, 13, 19, 27 Grinding stopcock or joint, 47 Ground joints, 51 Handle on stopcock, mending, 45 Hard glass, 1 Holding tube, 13, 14 Insertion of tube through another, see Sealing a tube through another tube. Joints, ground, 51 Joining rod and tube, 45 tubing end to end: first method, 16 second method, 20 Joining tubes of different diameters, 25 a new tube to a stopcock, 48 Kjeldahl trap, 41 Lead glass, 1 Lump of glass, removed, 18, 19, 20, 21, 24, 26, 30, 38 Platinum wires, sealed into glass, 1, 52 Position for glass-working, 5 Pressure, tubes for heating under, 55 Quality of glass, 1 Rod, glass, working, 44 Rotation of the tube, 13, 19 Rounded end of tube, 35, 38 Rubber tube used for blowing, 22 Sealing a tube through another tube, 35, 39 Sealing vacuum tubes, 55 Shrinking glass, 18, 19, 22, 26, 31 Side tube, blowing, 22, 25 Soda glass, 1 Soft glass, 1 Spirals, making, 50 Stopcocks, mending, 45 Suction pump, 39, 42 Sulphur dioxide tube, 28 "Tail" of glass, drawing out, 9, 54 removed, 30, 35 Tubes, closed, for heating under pressure, 55 "Tee" tube, 22 on capillary tubing, 43 small side tube on a large tube, 24 Vacuum tubes, sealing, 55 Working temperature of glass, 1, 13, 19, 27 +----------------------------------------------------------------------+ | | |
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