"Roentgen" induction coils and other X-ray apparatus (1904) (14571243247)

Identifier: roentgeninductio1904jame (find matches)
Title: "Roentgen" induction coils and other X-ray apparatus
Year: 1904 (1900s)
Authors: James G. Biddle Company
Subjects: X-rays Induction coils Radiography
Publisher: Philadelphia : James G. Biddle
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School



Text Appearing Before Image:
Figure 13. Roentgen Electrolytic Interrupter,Type B. THE style of interrupter illustrated here is similar in generalconstruction to the form shown on page 22, with two im-portant changes. The outside wood case is omitted and thereis no water cooling attachment. The last mentioned feature is notrequired under ordinary conditions, but it is always desirable toenclose the jar in some kind of a protecting box. Price. B3062. Roentgen Electrolytic Interrupter, TypeB $32.00 26 James G. Kiddle, 1114 Chestnut Street, Philadelphia. Series Spark Gap.
Text Appearing After Image:
Figure 14. Roentgen Series Spark Gap. THE well known phenomena of the <( inverse discharge of theinduction coil, makes it advisable to use some form of resist-ance in series with the terminal of the induction coil and the X-Raytube, to prevent the inverse discharge from going through the tube.When the inverse discharge is permitted to pass through the tube,a blackening of the inner walls of the tube occurs and is attributedto the deposition of the metal of the electrodes upon the glass. The most practical form of resistance hasHow it is Used been found to be a spark gap placed in series with the terminal of the induction coil and the tube, as the inverse discharge often is of sufficient voltage to jump across the resistance of an inch of air or more. If the series spark gap is greater than the distance through which the inverse discharge will jump, it cannot pass into the tube and blacken it. This form of series spark gap is the evolution of the work ofseveral years in the attempt