File:"Roentgen" induction coils and other X-ray apparatus (1904) (14777552393).jpg

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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

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Text Appearing Before Image:
rolytic interrupter James G. Biddle, 1114 Chestnut Street, Philadelphia. is used. An increase in inductance decreases the spark lengthand increases the length of time each impulse lasts in the tube.The quality of the spark is changed in the same way in the case ofeither interrupter. A tube should not be overloaded.rang a u . Many operators in their zeal to establish a high standard of short exposure run their tubes very hard beforethey become good judges of the behavior of tubes. Careful discrimination must be exercised even by the expertwho has had long experience with tubes, and he well knows that atube should never be operated with all the current it is just capableof carrying. The coil is able to give to the tube more energy than it canstand. If the tube were more rugged such great skill and carewould not be required ; but until the tubes are improved theirmanipulation will be an art and not a science. io James G. Biddle, 1114 Chestnut Street, Philadelphia. Roentgen Induction Coil
Text Appearing After Image:
Figure 3. Type A Coil for 20 or HO volts Direct Current. THIS standard type of coil is in extensive use for X-Ray workand is operated on direct current,—either 20 volts from bat-tery or motor-generator, or the commercial no volts. It has the Roentgen Self-Starting- Mechanical Interrupter, adjustable mica condenser and switches as described under Me-chanical Interrupter and Condenser; as well as a primary having variable inductance. The finish of the wood-work is either ma-hogany or selected quartered oak, as desired. Prices. B2998. 20 Type A Coil for 20 volts D. C $450.00 B2999. 2Q// Type A Coil for no volts D. C 450.00 B3000. 18 Type A Coil for 20 volts D. C 400.00 B3001. 18 Type A Coil for no volts D. C 400.00 B3002. 15 Type A Coil for 20 volts DC 325.00 B3003. 15 Type A Coil for no volts D. C. 32500 B3004. 12 Type A Coil for 20 volts D. C 250.00 B3005. 12 Type ■« A Coil for no volts D. C 250.00 James G. Biddle, 1114 Chestnut Street, Philadelphia. 11 Roentgen Induction Coil. KA

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  • bookid:roentgeninductio1904jame
  • bookyear:1904
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:James_G__Biddle_Company
  • booksubject:X_rays
  • booksubject:Induction_coils
  • booksubject:Radiography
  • bookpublisher:Philadelphia___James_G__Biddle
  • bookcontributor:Francis_A__Countway_Library_of_Medicine
  • booksponsor:Open_Knowledge_Commons_and_Harvard_Medical_School
  • bookleafnumber:15
  • bookcollection:medicalheritagelibrary
  • bookcollection:francisacountwaylibrary
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014

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