File:American X-ray journal (1901) (14757768102).jpg

Identifier: americanxrayjour9101unse (find matches)
Title: American X-ray journal
Year: 1902 (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

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the oper-ator to replenish the chemicals and ad-just or repair the heating coils withoutopening the instrument proper and ex-posing it to the moist atmosphere of theapartment. In one of the chambers areplaced large, shallow, flat trays con-taining commercial calcium chloride,which, by absorbing moisture, turnsfrom a white, dry, lumpy material intoa soft, sticky mass, or may even becomedeliquescent. During the summer months, the chlor-ide should be freed from water by heat-ing it in flat, iron trays, preferably upona gas range, every third or fourth dayuntil it becomes anhydrous. Buffalo,N. v. Fruita, Colorado, June 29, 1901.Dr. Heber Robarts. Dear Sir: My design patent on sta-tionary plate was officially allowed onthe 20th inst., and patent will be issuedon July 9. I enclose drawing of same. It ismade in two parts and is separable alonglines BB. The line B and B insteadof being carried round in a semi-circleis carried out and makes projection at Awhich serves as a base of support and
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the plate is steadied as usual at top B.Hole C is for hub of revolving plates. Ithas all the appearances and advantagesof a circular plate and can be easily re-moved, as well as being cheaper thanregular plate and not the danger ofbreaking. I have the plates on my 4-20inch rubber plate machine, which runsfrom 1,000 to 2,000 per minute and it isdoing work equal to the larger machinesalso on one machine with 8-27 inch re-volving plates and results are equal tothe best for that size. Will try and have some photos of themachine before long with description. Yours truly, J. M. G. Beard. Pus is less translucent to the rays thanserous fluids. THE AMERICAN X-RAY JOURNAL. 935 A Study of Static ElectricalApparatus. BY JOHN TOWN SEND PITKIN, M. D. ARTICLE NO. 4. The Charge and the Charger Continued. A well-constructed Holtz machine canbe operated during all portions of theyear without a dryer to absorb or heaterto expel the moisture, providing acharger of adequate generating capacityis employed

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