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Hubbell plug and receptacle as advertised in the 1906 Hubbell catalog An early American electrical plug and socket was invented by Harvey Hubbell and patented in 1904. Hubbell's first design was a socket which screwed into a lampholder (like the early lampholder plugs), but with a separable plug with pins ( U.S. patent 774,250 ) or blades (US ...
The contract led to the invention and patenting of the world's first wall plug, which became a standard solution for attaching things to walls. [1] John Joseph Rawlings , who is credited with the invention of the wall plug, named his product Rawlplug, using the first syllable of his last name, and renamed his business Rawlplug in 1919.
John Joseph Rawlings (1 June 1860 – 4 August 1942) was a British mechanical engineer and inventor of the wall plug, also known from his name as the rawlplug. He was the founder of the Rawlplug manufacturing company.
The original wall plug was invented by John Joseph Rawlings in 1911, and marketed under the name Rawlplug. These plugs became popular after the First World War , when a demand for retro-fitting existing buildings with new electric lighting coincided with a shortage of labour, encouraging many new labour-saving innovations in the building trade.
As early as 1885 a two-pin plug and wall socket format was available on the British market. By about 1910 the first three-pin earthed (grounded) plugs appeared. Over time other safety improvements were gradually introduced to the market. The earliest national [clarification needed] standard for plug and wall socket forms was set in 1915.
At the same time Lundberg were offering the 2.5 A Dot, 5 A Universal, and 15 A Magnum, and Tucker were offering a range of 5 A, 10 A and 20 A plugs and sockets. [27] BS 73 Wall plugs and sockets (five ampere two-pin without earthing connection) was first published in 1915, and revised in 1919 with the addition of 15 A and 30 A sizes. By the ...