"Roentgen" induction coils and other X-ray apparatus (1903) (14570537958)

Identifier: roentgeninductio1903jame (find matches)
Title: "Roentgen" induction coils and other X-ray apparatus
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



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e and efficient electrolytic in-terrupter manufactured. Our rheostats are especially made for us and areRheostats. . of ample capacity to carry the currents used without undue heating. We prefer to mount the rheostat away from the coil to prevent the varying expansion and contraction of the coil parts which results from the alternate heating and cooling. t, .. , All switches furnished with our regular coils are of Switches. ... . the indicating snap type. Experience has taught that these are advisable to minimize the arcing which occurs at the switchcontacts anci that they are much more desirable than knife switches.p. . . The finish is superior throughout. Either pol- ished mahogany or selected (juartered oak is fur-nished for the wood-work as desired. Polished hard rubber of bestquality is used for the jackets of the secondary cylinders, for the hightension terminals and wherever hi^h insulation is needed. James Q. Biddle, 1114 Chestnut Street, Philadelphia. Roentgen Induction Coil.
Text Appearing After Image:
Figure 2. Type A Coil for 20 or 110 volts Direct Current. This is the type of coil in most extensive use for X-Ray workand is operated on direct current, —either 20 \olts from battery ormotor-generator, or the commercial no volts. It has the Roentgen Self-Starting MecKanical In-terrupter, adjustable mica condenser and switches as describedunder Mechanical Interrupter and Condenser. The finish of the\vood-work is either mahogany or selected quartered oak, as desired. Prices. B3000. 18=inch Type A Coil for 20 volts D. C $4oo.oo B3oor. i8=inch Type A Coil for no volts D. C 400.00 B3002. i5=inch Type A Coil for 20 volts D. C 325.00 B3003 I5=inch Type A Coil for no volts D. C 325.00 B3004. 12-inch Type ««A Coil for 20 volts D. C 250.00 B3005. i2=iiich Type *A Coil for no volts D. C 250.00 James Q. Biddle, 1114 Chestnut Street, Philadelphia. Roentgen Induction Coil.