. Radiography and radio-therapeutics . 56 RADIOGRAPHY also a great advantage to familiarise ones self with the names of the variousparts. Description of the Manufacture of an X-Ray Tube.—The firstprocess consists of the blowing of a glass sphere of the desired capacitywith a neck, which varies from one to two inches in diameter, accordingto the size and type of the tube. The thickness of the walls of the bulbis from 2 to 6 mm. The various metal parts, or electrodes, having been carefully cleaned,are introduced through this neck, and are in turn sealed into position by theglass-blower. Connecti
. Radiography and radio-therapeutics . 56 RADIOGRAPHY also a great advantage to familiarise ones self with the names of the variousparts. Description of the Manufacture of an X-Ray Tube.—The firstprocess consists of the blowing of a glass sphere of the desired capacitywith a neck, which varies from one to two inches in diameter, accordingto the size and type of the tube. The thickness of the walls of the bulbis from 2 to 6 mm. The various metal parts, or electrodes, having been carefully cleaned,are introduced through this neck, and are in turn sealed into position by theglass-blower. Connections are made to the outside by fusing into the glasspieces of platinum wire, and as each portion of the tube is finished, it isannealed with extraordinary care. This anneaHng is one of the most im-portant processes, as an X-ray tube has to withstand the most intense Fi(i. 40. ^Radiator tube constructed for heavy discharges. (A. C. Cossar.) The electrodes having been placed in position, and the regulatorsattached, a length of glass tubing is fused on, and the tube is placed onthe vacumn pump. The final stages of exhaustion are sometimes veryprolonged, varying according to the size of the tube and the nature of theelectrodes employed. A large tube may occupy a considerable time in actual the process various conditions have to be observed, and it is duringpumping that the unavoidable risks of tube-making are greatest, as withthe increase of pressure from without, any stress, flaw, or other fault mayresult in the sudden collapse of the tube. When exhaustion is complete, the tube is taken from the pump, sealed,tested, and, if found to be in order, is finished off with the necessaryterminals. The Anti-cathode.—The most important part of an X-ray tube isthe anti-cathode, since it is here that the heat is generated, and most dis-turba
Size: 2249px × 1111px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookauthorknoxrobert18681928, bookcentury1900, bookdecade1910
