how did the machine behave when the button was pressed
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George H. Streichenberg
574,247; and George H. Streichenberg, "Push-Button," U.S. Patent no.
Push-Buttons are normally-open tactile switches. Push buttons allow us to power the circuit or make any particular connection only when we press the button. Simply, it makes the circuit connected when pressed and breaks when released. A push button is also used for triggering of the SCR by gate terminal.
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