US2350642A - Roentgen tube with anode turning about its longitudinal axis - Google Patents

Roentgen tube with anode turning about its longitudinal axis Download PDF

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Publication number
US2350642A
US2350642A US358686A US35868640A US2350642A US 2350642 A US2350642 A US 2350642A US 358686 A US358686 A US 358686A US 35868640 A US35868640 A US 35868640A US 2350642 A US2350642 A US 2350642A
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anode
tube
roentgen
longitudinal axis
turning
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Expired - Lifetime
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US358686A
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English (en)
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Schwarzer Kurt
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Individual
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • H01J35/26—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by rotation of the anode or anticathode

Definitions

  • the invention relates to a novel Roentgen tube with anode turning about its longitudinal axis and equipped with two anodes, two cathodes and synchronous drive for both anodes so that, when the tube is directly connected to an alternating current-high tension, both half-cycles are utilized for the production of Roentgen rays originating at the same point of space.
  • the rectifier connections with four high tension incandescent cathode rectifiers, used up to the present in all high power Roentgen arrangements become superfluous, so that the Roentgen arrangements become much simpler and cheaper.
  • the two anodes are preferably constructed as half rotary bodies of substantially similar shape and oppositely directed arranged rotatable in the same space portion with corresponding coordination of a cathode to each anode.
  • a synchronous motor may be provided as drive for each anode.
  • the drive may, however, be effected by one single synchronous motor, the two anodes being then connected the one with the other by a coupling piece possessing high insulating capability and heat constancy, for instance of quartz glass. Also in this coupling it is advisable to balance each anode alone relative to the turning axis in order to avoid too great mechanical stressing of the coupling piece.
  • FIG. 1 shows a longitudinal section through the tube
  • Fig. 2 is a top plan view on the anodes corresponding to the section line IIH in Fig. 1.
  • Figs. 3 and 4 show diagrammatic circuit connections, whereby the tube operates on both halfcycles of the alternating current.
  • Fig. 5 shows a second form of construction of the Roentgen tube, in which two motors are used.
  • a bearing 2, 3 respectively is inserted at the two ends each with ball bearings.
  • the anodes are coupled the one with the other by an insulatin piece 8 made for instance of quartz glass.
  • Each anode is balanced alone relatively to its turning axis by means of balancing bodies 9, ID.
  • a motor making 3000 revolutions per minut is provided, the stator of this motor being designated by H and the rotor mounted on the turning axle 4 by H.
  • An incandescent cathode I3 is coordinated to the anode 6, the filament voltage being fed to said cathode through the intermediary of metal By the Roentgen tube seals l4, l5 of the high vacuum envelope.
  • the incandescent cathode I 6 with the metal seals IT, IS belongs to the anode I.
  • the anode 6 and the incandescent cathode It in the one half-cycle have positive potential and the anode I and the incandescent cathode [3 have negative potential.
  • the potential distribution is inverse.
  • the incandescent cathode I6 is negative, the anode 1 positive and Roentgen rays are emitted from the tube to the left.
  • the anode has turned by the incandescent cathode I3 is negative and the anode 6 positive, so that Roentgen rays are emitted from the same in the same direction.
  • the position of the focal point in the space remains unchanged.
  • the high tension for the Roentgen tube is supplied by the transformer I9, the filament voltage for the incandescent cathode l3 by the transformer 20 and the filament voltage for the incandescent cathode l6 by the transformer 2
  • the course of the circuit in the two half -cycles is indicated by arrows.
  • the current flows in one of the half-cycles, as shown in Fig. 3, from the right hand end of the secondary winding of the high tension transformer l9 through the wire 22, the cathode It, the anode I and the wire 23 to the other pole of the high tension transformer.
  • the anodes have turned by 180, as shown in Fig. 4.
  • the current flows then from the left end of the secondary winding of the high tension transformer l9 through the wire 23, the cathode Hi, the anode B and the wire 22 to the other pole of the high tension transformer.
  • Fig. 5 shows a second embodiment of the Roentgen tube according to the invention, in which for each anode a synchronous motor is provided as drive. In this instance it is evidently very material that both motors run accurately uniformly and synchronously with the operation voltage.
  • the pivot axle 4 of the anode 6 is journaled in the bearings 2 and 24.
  • the motor I2 is mounted on the axle 4 and rotated by the stator H.
  • the current is fed to the incandescent cathode l3 coordinated to the anode '6 by means of the metal seals 25, 26 of the high vacuum sleeve.
  • the pivot axle 5 of the second anode I is journalled in the bearings 21, 28, and on this axle the rotor 29 is mounted which is rotated by the stator 30.
  • the current is fed by the metal seals ll, l8 to the incandescent cathode l6, coordinated to this anode I.
  • Roentgen tube of the rotating anode type comprising two anodes and two cathodes; the two anodes constructed as semi-rotary bodies of substantially similar form but oppositely directed and each cathode coordinated to each anode, a synchronous drive for both anodes, so that with direct connection of the tube to an alternating current high tension both semi-cycles are utilized for the production of Roentgen rays produced at the same point in the space.

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  • X-Ray Techniques (AREA)
US358686A 1939-10-14 1940-09-27 Roentgen tube with anode turning about its longitudinal axis Expired - Lifetime US2350642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2350642X 1939-10-14

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US2350642A true US2350642A (en) 1944-06-06

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US358686A Expired - Lifetime US2350642A (en) 1939-10-14 1940-09-27 Roentgen tube with anode turning about its longitudinal axis

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US (1) US2350642A (fr)
NL (1) NL58621C (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450530A (en) * 1945-03-21 1948-10-05 Kelley Koett Mfg Company X-ray rectifying mechanism
US2594564A (en) * 1948-12-16 1952-04-29 Kehrli Hans Revolving anode roentgen ray tube
US2597498A (en) * 1948-12-10 1952-05-20 Joseph V Kerkhoff X-ray tube
DE945277C (de) * 1952-08-29 1956-07-05 Siemens Reiniger Werke Ag Vakuumgefaess mit im Innern angeordneten rotierenden Teilen, insbesondere Drehanoden-Roentgenroehre
US2761992A (en) * 1950-08-19 1956-09-04 Siemens Reiniger Werke Ag Electrical discharge tube
DE1053105B (de) * 1957-04-02 1959-03-19 Phoenix Roentgenroehrenwerk Ru Drehanodenroentgenroehre mit Strahlungskuehlung
US2900542A (en) * 1954-09-22 1959-08-18 Harry B Mceuen X-ray apparatus
US3851204A (en) * 1973-03-02 1974-11-26 Gen Electric Rotatable anode for x-ray tubes
FR2375715A1 (fr) * 1976-12-23 1978-07-21 Philips Nv Tube de rontgen a anode rotative
US6125167A (en) * 1998-11-25 2000-09-26 Picker International, Inc. Rotating anode x-ray tube with multiple simultaneously emitting focal spots
US6188747B1 (en) * 1998-01-24 2001-02-13 Heimann Systems Gmbh X-ray generator
US20040247082A1 (en) * 2003-06-05 2004-12-09 Ge Medical Systems Global Technology Company, Llc Ct imaging system with multiple peak x-ray source

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450530A (en) * 1945-03-21 1948-10-05 Kelley Koett Mfg Company X-ray rectifying mechanism
US2597498A (en) * 1948-12-10 1952-05-20 Joseph V Kerkhoff X-ray tube
US2594564A (en) * 1948-12-16 1952-04-29 Kehrli Hans Revolving anode roentgen ray tube
US2761992A (en) * 1950-08-19 1956-09-04 Siemens Reiniger Werke Ag Electrical discharge tube
DE945277C (de) * 1952-08-29 1956-07-05 Siemens Reiniger Werke Ag Vakuumgefaess mit im Innern angeordneten rotierenden Teilen, insbesondere Drehanoden-Roentgenroehre
US2900542A (en) * 1954-09-22 1959-08-18 Harry B Mceuen X-ray apparatus
DE1053105B (de) * 1957-04-02 1959-03-19 Phoenix Roentgenroehrenwerk Ru Drehanodenroentgenroehre mit Strahlungskuehlung
US3851204A (en) * 1973-03-02 1974-11-26 Gen Electric Rotatable anode for x-ray tubes
FR2375715A1 (fr) * 1976-12-23 1978-07-21 Philips Nv Tube de rontgen a anode rotative
US6188747B1 (en) * 1998-01-24 2001-02-13 Heimann Systems Gmbh X-ray generator
US6125167A (en) * 1998-11-25 2000-09-26 Picker International, Inc. Rotating anode x-ray tube with multiple simultaneously emitting focal spots
US20040247082A1 (en) * 2003-06-05 2004-12-09 Ge Medical Systems Global Technology Company, Llc Ct imaging system with multiple peak x-ray source
US7120222B2 (en) * 2003-06-05 2006-10-10 General Electric Company CT imaging system with multiple peak x-ray source

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Publication number Publication date
NL58621C (fr)

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