A
lamp socket, also known as the Edison screw fitting, is a threaded screw base used to hold and connect a light bulb to a power source. Invented by Thomas Edison and marketed in 1909, these sockets typically have right-hand threads, which allow the light bulb to be screwed in clockwise and removed counterclockwise. To deter theft in public places, the threads are sometimes reversed to prevent installation in common
floodlight fixtures.
Most standing lamps consist of a body, a base where the cord enters, a harp to support the shade, and a socket, which receives the cord at one end and the lightbulb at the other. The cord usually runs through a hollow threaded rod from the base to the socket.
Lamp Sockets, Cluster Sockets, Lamp Cord, Lamp Wire, Wiring Devices, Cord Switches, and Wall Plugs. We stock a lamp socket for any application including general lamp repair, but we also supply lamp sockets specifically for the restoration of antique and early style fixtures including mogul lamp sockets, turn-knob porcelain lamp sockets, and socket interiors that resist high heat.
Lamps, light fixtures, and adapters are common types of fixtures that include a lamp socket. Light fixtures as well as lamps incorporate Edison screw lamp sockets into their design not only for holding and energizing the bulb but also to take advantage of the many types of bulbs on the market that use this design. Alternate designs were implemented in the early 1900s that varied from Edison's design but in the end, they fell out of use due to the practicality of the Edison screw.