File:Roentgen induction coils for quick work (1903) (14571618527).jpg

Identifier: roentgeninductio00jame (find matches)
Title: Roentgen induction coils for quick work
Year: 1903 (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

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:
red. Fresh platinum surfacecan thus be exposed as it is worn away. The interrupter can be conveniently placed to suit the require-ments of the operator, as it is not necessary to mount it upon or withthe coil. Since the interruptions cease to be regular as the sulphuric acidsolution warms up with use, the cathode is made of a lead tubethrough which water from a faucet should be passed when the inter-rupter is used for long and continuous running. Though the platinumis quite rapidly eaten away when the electrolytic interrupter is used onthe alternating current, it is quite a satisfactory solution of the prob-lem of the operation of an induction coil directly on the commercialalternating circuits without incurring the expense of a motor-gener-ator. The electrolytic interrupter does not require any condenser asmust be used with the various forms of mechanical or mercury inter-rupters, and is thus very much less expensive than they are. JAMES G. BIDDLE, III4 CHESTNUT STREET, PHILADELPHIA.
Text Appearing After Image:
Fig 4Roentgen Three-Anode Electrolytic Interrupter. A water cooling attachment is provided with this form, althoughnot shown in the illustration. JAMES G. BIDDLE, I 114 CHESTNUT STREET. PHILADELPHIA. II • The electrolytic interrupter can be made to deliver momentarilyfrom ten to thirty amperes of current to a properly designed inductioncoil for the purpose of making a snap shot exposure, or it can bereadily adjusted to furnish less current, as desired. An experienced operator using the electrolytic interrupter witha Roentgen 15 inch coil can make a radiograph of the chest of anadult in from one to three seconds, while with an 18 inch coil he canmake the exposure in but a fraction of a second, thus taking an actualsnap shot of the beating heart. The advantage of this very short exposure in diagnosis of thechest is appreciated without explanation. Using the 15 inch coil with this interrupter the same operatorwill be able to make a radiograph of the pelvis of a male adult weigh-ing abo

Note About Images