Identifier: practicalpointsi00judd (find matches)
Title: Practical points in the use of X-ray and high-frequency currents
Year: 1909 (1900s)
Authors: Judd, Aspinwall
Subjects: X-rays Electrotherapeutics Radiography X-Rays Radiography
Publisher: New York : Rebman Company
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
Fig. 20.—The above cut illustrates the large solenoid of dArsonval.This is large enough to place the patient inside of it, and when usedin this way, it is termed auto-induction. on which the patient is placed. (See Fig. 21,Auto-Condensation Couch.) Instead of an auto-condensation couch Piffardmakes use of an ordinary armchair, on the seatof which he places a cushion constructed in thefollowing way: A circle 17 inches in diameteris cut out of whitewood one-half inch in thick-ness. Commencing at the center, a spiral ofNo. 3 (B. and S. gauge) aluminum wire is High-Frequency Apparatus 55 wound with turns 2 inches apart between cen-ters, until the circumference of the wood isreached, when the wire is turned to form asmall loop. The wire is firmly attached to thewood by a sufficient number of double-pointedtacks. Three other circles are cut from the -o o
Text Appearing After Image:
Fig. 21.—The third method of using the dArsonval current is shownabove and is termed auto-condensation. A represents the patientconnected with one terminal of the small solenoid of dArsonval.B represents a cushion of varying thickness, upon which the patientsits. C represents a metal plate undei the cushion, and is connectedwith the other terminal of the small solenoid. same wood, one-quarter inch in thickness, andglued together to prevent warping. This three-ply piece is then fastened to the other by dowels,with the wire between them. A circle of plumb-ers felt, an inch or so in thickness, is then placedon the thicker circle, and the whole covered withleather. 56 X-Ray and High-Frequency Currents Brass balls two inches in diameter are fast-ened to the arms, and these balls are connectedtogether by a light chain or wire running underthe chair. If the chair is to be used in connection with acoil, a condenser and a small solenoid, or Piff-ards spiral is connected. A conducting-cordcon

Note About Images