US1951218A - Tester for high frequency oscillating current - Google Patents

Tester for high frequency oscillating current Download PDF

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Publication number
US1951218A
US1951218A US671413A US67141333A US1951218A US 1951218 A US1951218 A US 1951218A US 671413 A US671413 A US 671413A US 67141333 A US67141333 A US 67141333A US 1951218 A US1951218 A US 1951218A
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United States
Prior art keywords
high frequency
tester
oscillating current
frequency oscillating
shell
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Expired - Lifetime
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US671413A
Inventor
Graham G Somers
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Individual
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Priority to US671413A priority Critical patent/US1951218A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145Indicating the presence of current or voltage
    • G01R19/15Indicating the presence of current

Definitions

  • This invention appertains to new and useful improvements in electrical testing, and more particularly to a novel hand tester for use in testing the high frequency oscillation set up by spark jumping gaps of spark plugs, and in this way determining spark plug efiiciency.
  • Another important object of the invention is to provide a simple, and inexpensive device for readily testing high frequency circuits to determine their condition without inconvenience to the person performing this work.
  • Figure 1 represents a side elevational view of the instrument.
  • Figure 2 represents a longitudinal sectional view through the shell of the instrument.
  • Figure 3 represents a longitudinal sectional view entirely through the device.
  • Figure 4 represents a front end elevational view of the instrument.
  • Figure 5 represents a cross sectional view through the device.
  • Figure 6 represents a perspective view of the metallic shield.
  • Figure 7 represents a longitudinal sectional view through the electrode unit.
  • Figure 8 represents a perspective view of one of the neon tubes.
  • Figure 9 represents a perspective view of the spacer.
  • numeral 5 represents a cylindrical di-electric shell closed at one end, as at 6, and provided with an inwardly extending core 7 of the same material in spaced relation with respect to its shell portion 5 and terminating inwardly of its open end.
  • Numeral 8 represents a metallic shield to reduce body capacity which is inserted between the shell 5 and the core 7 so as to snugly fit against the inner side of the shell 5.
  • This shield 8 has a closed end 9 which abuts the free end of the core 7 and a di-electric plug 10 closes this end of the shell 5 and abuts the closed end 9 of the shield 8, maintaining the di-electric spacer 11 in the bore 12 of the core 7 against the adjacent neon tube 13 so as to maintain these neon tubes 13 in stable position against any tendency to shift or jar.
  • Numeral 14 represents a metallic socket in the closed end 6 of the shell 5 for receiving the metallic jacket 15 on the electrode unit generally referred to by numeral 16, which further includes the di-electric body 17 around which the jacket 15 is disposed and the electrode rod. 18 which extends longitudinally through the body 17, connecting at one end to the jacket 15 and projecting at its opposite end a substantial distance away from the adjacent end of the body 17 to terminate in a curved portion 19.
  • the jacket 15 engages against the metallic socket 14 and of course, one of the end neon tubes 13 in the bore 12 engages at one end against the socket 14.
  • the neon tubes are preferably insulated or slightly spaced apart in some suitable manner, so that the high frequency current will jump from one to the other, and the brilliancy of these tubes and the number energized will determine the strength of the current, this illumination being visible through the openings 20 which extend not only through the shell 5, but also through the shield 8 and through the core 7 to meet the bore 12, there being one of these openings for each of the neon tubes employed.
  • the purpose of the metallic shield 8 is to reduce body capacity, and to regulate the flow of current through the lamps, by varying capacity of the shield itself.
  • An instrument of the character described comprising a hollow body of insulating material, a contact at one end of the body, a tubular structure projecting in the body from the last mentioned end of the same, and a gaseous element tube in the said tubular structure engaged with the said contact.
  • An instrument of the character described comprising a hollow body of insulating material, a contact at one end of the body, a tubular structure projecting in the body from the last mentioned end of the same, a gaseous element tube in the said tubular structure engaged with the said contact, and a body capacity reducing shield interposed between the said tubular structure and the side of the said body.
  • An instrument of the character described comprising a hollow body of insulating material, a contact at one end of the body, a tubular structure projecting in the body from the last mentioned end of the same, and a plurality of gaseous element tubes in the said tubular structure connected in series and with the said contact.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Measuring Devices (AREA)

Description

March 13, 193.4. G G SOMERS 1,951,218
TESTER FOR HIGH FREQUENCY OSCILLATING CURRENT Filed May 16, 1953 2 Sheets-Sheet l Inventor 5 A 0/776V'd' March 13, 1934. a G, S MER 1,951,218
TESTER FOR HIGH FREQUENCY OSCILLATING CURRENT Filed May 16, 1933 2 Sheets-Sheet 2 Patent ed Mar. 13, 1934 UNITED STATES PATENT OFFICE TESTER FOR HIGH FREQUENCY OSCILLATING CURRENT 3 Claims.
This invention appertains to new and useful improvements in electrical testing, and more particularly to a novel hand tester for use in testing the high frequency oscillation set up by spark jumping gaps of spark plugs, and in this way determining spark plug efiiciency.
Another important object of the invention is to provide a simple, and inexpensive device for readily testing high frequency circuits to determine their condition without inconvenience to the person performing this work.
Other important objects and advantages of the invention will become apparent to the reader of the following specification.
In the drawings:
Figure 1 represents a side elevational view of the instrument.
Figure 2 represents a longitudinal sectional view through the shell of the instrument.
Figure 3 represents a longitudinal sectional view entirely through the device.
Figure 4 represents a front end elevational view of the instrument.
Figure 5 represents a cross sectional view through the device.
Figure 6 represents a perspective view of the metallic shield.
Figure 7 represents a longitudinal sectional view through the electrode unit.
Figure 8 represents a perspective view of one of the neon tubes.
Figure 9 represents a perspective view of the spacer.
Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 represents a cylindrical di-electric shell closed at one end, as at 6, and provided with an inwardly extending core 7 of the same material in spaced relation with respect to its shell portion 5 and terminating inwardly of its open end. Numeral 8 represents a metallic shield to reduce body capacity which is inserted between the shell 5 and the core 7 so as to snugly fit against the inner side of the shell 5. This shield 8 has a closed end 9 which abuts the free end of the core 7 and a di-electric plug 10 closes this end of the shell 5 and abuts the closed end 9 of the shield 8, maintaining the di-electric spacer 11 in the bore 12 of the core 7 against the adjacent neon tube 13 so as to maintain these neon tubes 13 in stable position against any tendency to shift or jar.
Numeral 14 represents a metallic socket in the closed end 6 of the shell 5 for receiving the metallic jacket 15 on the electrode unit generally referred to by numeral 16, which further includes the di-electric body 17 around which the jacket 15 is disposed and the electrode rod. 18 which extends longitudinally through the body 17, connecting at one end to the jacket 15 and projecting at its opposite end a substantial distance away from the adjacent end of the body 17 to terminate in a curved portion 19.
As can be seen in Figure 3, the jacket 15 engages against the metallic socket 14 and of course, one of the end neon tubes 13 in the bore 12 engages at one end against the socket 14. The neon tubes are preferably insulated or slightly spaced apart in some suitable manner, so that the high frequency current will jump from one to the other, and the brilliancy of these tubes and the number energized will determine the strength of the current, this illumination being visible through the openings 20 which extend not only through the shell 5, but also through the shield 8 and through the core 7 to meet the bore 12, there being one of these openings for each of the neon tubes employed.
The purpose of the metallic shield 8 is to reduce body capacity, and to regulate the flow of current through the lamps, by varying capacity of the shield itself.
While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.
Having described the invention, what is claimed as new is:
1. An instrument of the character described comprising a hollow body of insulating material, a contact at one end of the body, a tubular structure projecting in the body from the last mentioned end of the same, and a gaseous element tube in the said tubular structure engaged with the said contact.
2. An instrument of the character described comprising a hollow body of insulating material, a contact at one end of the body, a tubular structure projecting in the body from the last mentioned end of the same, a gaseous element tube in the said tubular structure engaged with the said contact, and a body capacity reducing shield interposed between the said tubular structure and the side of the said body.
3. An instrument of the character described comprising a hollow body of insulating material, a contact at one end of the body, a tubular structure projecting in the body from the last mentioned end of the same, and a plurality of gaseous element tubes in the said tubular structure connected in series and with the said contact.
GRAHAM G. SOMERS.
US671413A 1933-05-16 1933-05-16 Tester for high frequency oscillating current Expired - Lifetime US1951218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US671413A US1951218A (en) 1933-05-16 1933-05-16 Tester for high frequency oscillating current

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US671413A US1951218A (en) 1933-05-16 1933-05-16 Tester for high frequency oscillating current

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474073A (en) * 1946-12-13 1949-06-21 Littelfuse Inc High-voltage tester and indicator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474073A (en) * 1946-12-13 1949-06-21 Littelfuse Inc High-voltage tester and indicator

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