I have two devices that I believe to be as mentioned in the subject. The first is a spark gap made up as follows: hollor rounf hard rubber ball with gap plates in senter of ball, connections would go to the end of a brass shaft connected to each gap plate. The ball has an opening in the center outside and I am told that it was to allow a liquid such as alchol to be placed inside the ball to cover the gap, also told it was known as a "quench gap" and that there were only a couple of these made. Anyone got any ideas?
Second item is a small wooden box about 4 X 4 X 6-inches with the following thumb screw type terminals mounted on the front face of the box: left vertical-two terminals , each labeled "INT", In center frontis a Large round insulator type material with outside threads like to allow a cap to be threaded over the terminal, it is about 1-inch diameter with thumb-screw terminal, to the right of this is another terminal marked "GND" on the right vertical side, two terminals- top is "Neg", bottom is "Pos". On the top left of the bos is a brass strip with an insulated knob, spring-loaded open (looks like a miniature CW key) marked "start", to the right of this (key) is is a totary type off-on switch. Sindle lever moves horizontayyl to and from a contact.
The unit was made by Atwater Kent and identified as "System-K. Pat. in 1904,10,11 and 1912.
Anyone recognize these devices?

: I have two devices that I believe to be as mentioned in the subject. The first is a spark gap made up as follows: hollor round hard rubber ball with gap plates in center of ball, connections would go to the end of a brass shaft connected to each gap plate. The ball has an opening in the center outside and I am told that it was to allow a liquid such as alchol to be placed inside the ball to cover the gap, also told it was known as a "quench gap" and that there were only a couple of these made. Anyone got any ideas?

: Second item is a small wooden box about 4 X 4 X 6-inches with the following thumb screw type terminals mounted on the front face of the box: left vertical-two terminals , each labeled "INT", In center front is a Large round insulator type material with outside threads like to allow a cap to be threaded over the terminal, it is about 1-inch diameter with thumb-screw terminal, to the right of this is another terminal marked "GND" on the right vertical side, two terminals- top is "Neg", bottom is "Pos". On the top left of the box is a brass strip with an insulated knob, spring-loaded open (looks like a miniature CW key) marked "start", to the right of this (key) is a rotary type off-on switch. Single lever moves horizontally to and from a contact.

: The unit was made by the Atwater Kent Mfg Co., Phila., PA and identified as "System-K. Pat. in 1904,10,11 and 1912.

: Whe applying a small potential to the pos and neg terminals I can get a real hot spark across the center terminal and GND terminal when I tap the start key. Anyone recognize these devices?

: : I have two devices that I believe to be as mentioned in the subject. The first is a spark gap made up as follows: hollor round hard rubber ball with gap plates in center of ball, connections would go to the end of a brass shaft connected to each gap plate. The ball has an opening in the center outside and I am told that it was to allow a liquid such as alchol to be placed inside the ball to cover the gap, also told it was known as a "quench gap" and that there were only a couple of these made. Anyone got any ideas?

: : Second item is a small wooden box about 4 X 4 X 6-inches with the following thumb screw type terminals mounted on the front face of the box: left vertical-two terminals , each labeled "INT", In center front is a Large round insulator type material with outside threads like to allow a cap to be threaded over the terminal, it is about 1-inch diameter with thumb-screw terminal, to the right of this is another terminal marked "GND" on the right vertical side, two terminals- top is "Neg", bottom is "Pos". On the top left of the box is a brass strip with an insulated knob, spring-loaded open (looks like a miniature CW key) marked "start", to the right of this (key) is a rotary type off-on switch. Single lever moves horizontally to and from a contact.

: : The unit was made by the Atwater Kent Mfg Co., Phila., PA and identified as "System-K. Pat. in 1904,10,11 and 1912.

: : Whe applying a small potential to the pos and neg terminals I can get a real hot spark across the center terminal and GND terminal when I tap the start key. Anyone recognize these devices?

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Dear sir , Our company is a specialized company for trade and engineering service . our profile to working with Marines generators and industrial power generators and portable generators . in view of demand from our partners witch is located in Syria , Jordanian , Lebanon , Iraq we need from your side the completely information about your production program with completely catalog and also with your export price on destination CIF-Aqabah (JORDAN) if it's possible.Anyway this documents should be sanded by post mail on our address in Yugoslavia .

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Eng. Lutfi Sarmad