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US1634208A - Electric relay for radiography - Google Patents

Electric relay for radiography Download PDF

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Publication number
US1634208A
US1634208A US58462A US5846225A US1634208A US 1634208 A US1634208 A US 1634208A US 58462 A US58462 A US 58462A US 5846225 A US5846225 A US 5846225A US 1634208 A US1634208 A US 1634208A
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US
United States
Prior art keywords
transformer
relay
disc
winding
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US58462A
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English (en)
Inventor
Pilon Hector Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1634208A publication Critical patent/US1634208A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/30—Controlling
    • H05G1/38—Exposure time
    • H05G1/42—Exposure time using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube

Definitions

  • the operator who is to effect a radiography reviously determines the quality of the -ra diation which is a function of the potential applied at the terminals of the X-ray bulb, the intensity of this radiation which is proportional to the average intensity of the current passing through the bulb, and the quantity of energy of the X-r'adia'tion necessary for the correct impression of the photographic emulsion, quantity which is proportional to the time or duration of passage of the current.
  • the present invention has for its object to provide an apparatus automatically taking into account all the possible variations of intensity and of potential, for supplymg the bulb with a predetermined quantity of "1 energy, with factors initially adjusted to the required value.
  • the apparatus determines the time of ex osure according to these values and modi es it according to the variations which may occur.
  • this apparatus is constituted by a movable equipment of electric meter carrying a contact sending or cutting olf, at the end of its displacement, the current in a contactor-relay controlling the main current.
  • the displacement o the equipment is adjustable. beforehand by means of a movable abutment rigid with an index moving over a dial graduated in units of energy used.
  • the movable equipment of this meter is urged by a force proportional to the energy y suitably arranged windings branched on the tension and lntensity circuits of the curpassing through the bulb and which is given J rent feeding the radiogeneous bulb or on the primary circuit of the high tension transformer.
  • the rotating switch 1 being put in synchronism and brought into step, the contact 2 is closed.
  • the current is thensent in the closin'gcoil 3, the switch 4 is attracted and closes the former.
  • 1 l p The current flowing I, through the X-ray tube 7 passes through the secondary circuit 6 of" the transformer and through the cur primary circuit'5 of the transrent coil 8 of the series relay in said circuit.
  • This contact 12 is caused, by the rotation of the disc, to short-circuit the contact 14, the current then passes in the releasing or tripping coil 15 which attracts the switch and opens the primary circuit of the transformer.
  • the speed of rotation of the disc is proportional to the intensity and voltage applied at the terminals of their respective coils. It might be supposed that this voltage coil is branched at the terminals of the primary circuit of the transformer.
  • the mode of operation is as follows:
  • the current of the contactor-relay 3 of the. main current is cut inv by means of the auxiliary switch 2.
  • the X-ray bulb 7 is fed according to the constants chosen and the movable equipment of the meter 10 advances at a speed which depends on the electric braking of the movable equipmentlO-lQ so as to calibrate the graduated dial according to the shape of the current used in the radiogeneous bulb 7.
  • a transformer for supplying an X-ray tube and including primary and secondary windings, a field winding shunt connected with the primary winding of the transformer, a second lield winding connected in series with the secondary winding of the transformer to produce with the first field winding a nmgnetic tield, a rotatable disc aranged in said magnetic held, and means for opening the circuit of the transformer primary winding upon rotation oi the disc to a predetermined extent.
  • a transformer for supplying an X-ray tube and including primary and secondary windings and circuits associated therewith, a field winding shunt connected with the primary Winding of the transformer, a second field winding connected in series with the secondary winding of the transformer to produce with the first mentioned field winding a magnetic field, a rotatable disc arranged in said magnetic field, means for opening the primary circuit of the transformer after a predetermined rotation of said disc, and means for varying the extent of rotary motion of the disc necessary to effect the opening of said primary circuit.
  • a transformer for supplying an X-ray tube and including primary and secondary windings and circuits associated therewith, a field winding shunt connected with the primary winding of the transformer, a second field winding connected in series with the second ary winding of the transformer to produce with the first mentioned lield winding a magnetic field, a rotatable disc arranged in said magnetic field, a relay including means for opening the primary circuit of the transformer, and a circuit including said relay, means for closing the relay circuit after a predetermined rotation of said disc to energize said relay and effect the opening of the transformer primary circuit, and means for 'arying the extent of rotary motion of the disc necessary to effect the closing of the relay circuit.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • X-Ray Techniques (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
US58462A 1924-11-18 1925-09-24 Electric relay for radiography Expired - Lifetime US1634208A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR243320X 1924-11-18

Publications (1)

Publication Number Publication Date
US1634208A true US1634208A (en) 1927-06-28

Family

ID=8883454

Family Applications (1)

Application Number Title Priority Date Filing Date
US58462A Expired - Lifetime US1634208A (en) 1924-11-18 1925-09-24 Electric relay for radiography

Country Status (3)

Country Link
US (1) US1634208A (de)
DE (1) DE489750C (de)
GB (1) GB243320A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763160C (de) * 1933-09-09 1953-07-20 Siemens Reiniger Werke Ag Einrichtung zum Betrieb von Roentgenroehren mit Gluehkathode

Also Published As

Publication number Publication date
DE489750C (de) 1930-01-22
GB243320A (en) 1926-04-08

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