American X-ray journal (1899) (14570377327)

Identifier: americanxrayjour5618unse (find matches)

Title: American X-ray journal

Year: 1900 (1900s)

Authors:

Subjects: X-Rays Radiography

Publisher: St. Louis : American X-Ray Publishing Co.

Contributing Library: The College of Physicians of Philadelphia Historical Medical Library

Digitizing Sponsor: Open Knowledge Commons and the National Endowment for the Humanities

Text Appearing Before Image:

nadditional resistance of about 5 ohms be-fore it could be used with safety. Under *The coil, with platinum contact-breaker and 12-volt accumulator, gives a full 12-inch spark. X-RAY JOURNAL- these circumstances, however, matterscan be speedily rectified by cutting off apiece of the platinum wire. From these experiments I concludedthat a 220 volt current would be used,which conclusion was subsequently veri-fied. The length and size of the platinumwire used in the anode. constitutes oneof the most important points in the con-struction of the interruptor, as has to anextent been already shown. I have beencalled to task by a contemporary for rec-ommending a wire so small as 20 B.W.G. This has, in my hands, proved sosuccessful that I continue to use it. Ihave never hati the, apparatus stopworking since I adopted it, and I rarelyget a broken tube. In most of thebought interruptors a larger size isused, but experience alone can teachwhich is the better. An interruptor in which the length of

Text Appearing After Image:

Fig. 5. Fig. 6. the platinum wire exposed can be regu-lated at will is a great advantage, as, bytaking note of what has been said of theinfluence of the specific gravity of theelectrolyte, any size coil can be workedfrom any current up to 220 volts withouta rheostat. An adjustable interruptor isshown in Fig. 5. In this instrument theplatinum wire passes through a smallhole in a piece of china, or baked clay,the length being varied by the screw, A.Fig. 6 shows a form of interruptor in THE AMERICAN X-RAY JOURNAL- 665 which the anode is surrounded by a cyl-inder of lead. It must be kept in mind that a con-siderable amount of gas is generatedwhen an interruptor is at work, and,moreover, that it is given off in the pro-portions necessary for forming water;hence under no circumstances should alight be brought near the vessel after ithas been working for any length of time,or a serious explosion may occur. Itis also very desirable that, in covered in-terrupters, large holes should be provid-

Amerikanisches Röntgenjournal 1899 Buchillustrationen Röntgen Medizin röntgenjournal Bilder aus dem Internetarchiv

1899

Internet Archive

http://commons.wikimedia.org/

public domain