knife switch

He searched the wall for a moment, found an old knife switch, and threw it.

We could put back the knife switches which had fallen out and in feverish haste got the electric motors working.

Frog scurried , threw a knife switch on an ancient electric light system.

A knife switch is a type of switch used to control the flow of electricity in a circuit.

The disadvantages of the knife switch are the slow opening speed and the proximity of the operator to exposed live parts.

The very earliest central power stations used simple open knife switches, mounted on insulating panels of marble or asbestos.

Staples saw that he had accidentally struck the open knife switch so that the bars barely touched the contacts.

Knife switches are made in many sizes from miniature switches to large devices used to carry thousands of amperes.

Knife switches consist of a flat metal blade, hinged at one end, with an insulating handle for operation, and a fixed contact.

There are several advantages to the tipping point mechanism in comparison to old-fashioned direct-operated knife switches:

With wire cutters he cut both wires and installed a doublepole double-throw knife switch.

This equipment originally consisted of two telegraph keys engaged by knife switches, and evolved into the rotary dial telephone.

For the sake of drama, they'd built a large knife switch, worthy of Frankenstein's lab, into the side of the cabinet.

We had a picnic table, and I was wiring buzzers and bells and knife switches and things.

From these Main knife switches the current was transferred to the Earthing knife switch.

When the contained fuse operates or blows, the fuse holder will drop open, disengaging the knife switch, and hang from a hinge assembly.

Open knife switches were supplanted by safety switches with current carrying contacts inside a metal enclosure which can only be opened by switching off the power.

The fuse holder, often called the "fuse tube" or "door", which contains the interchangeable fuse element and also acts as a simple knife switch.

Keeping the variable-sword unostentatiously in sight, he closed the cover on the kzin's crash couch and flipped a knife switch.

Jared stumbled backward and right to avoid the slashing; Pauling's knife switched hands and stabbed downward, missing Jared's leg by about a centimeter.

Though used commonly in the past, knife switches are now rare, finding use largely in science experiments where the position of the switch may be plainly seen in demonstration.

He wiped his fingertips on his trousers, then began to operate the key, a horizontal knife switch that opened and closed the circuit to form the dots and dashes.

Then he looped a length of fishline around the crosspiece of the knife switch and pushed both ends back through the upper hole in the panel from the back.

With an adjustable wrench he had removed the cover plate from the defence screen generator and with the light of a powerful flashlight he was tracing the colour-coded knife switches.

My hair was drying out, and starting to raise skywards, and the guy who thought he was Nicola Tesla went over to his apparatus and flipped a giant knife switch.