A pair of real mottled brown Bakelite hexagonal door knobs with a variety of backplates. Complete with 5/16" spindle to fit most old, as well as new, locks and latches. Grub screws and wood screws are also supplied.
Suitable for either mortice or rim locks. For rim lock use, simply discard one of the two backplates.
Bakelite - Leo Hendrik Baekeland was born in Ghent, Belgium, in 1863. He emigrated to the United States in 1889. His first major invention was Velox, a photographic printing paper that could be developed under artificial light. Baekeland sold the rights to Velox to George Eastman and Kodak for one million dollars in 1899. He then started his own laboratory in Yonkers, New York, where he invented Bakelite in 1907, a synthetic substitute for the shellac used in electronic insulation and an alternative to celluloid, a very flammable mouldable resin.
Bakelite was made by mixing carbolic acid with formaldehyde, and is considered the first plastic. In 1909 Bakelite was introduced to the general public at a chemical conference as Baekeland founded the General Bakelite Corp. In 1944 Baekeland died at the age of eighty years in Beacon, N.Y.
Bakelite was used to manufacture everything from telephone handsets and costume jewellery to engine parts and insulation for electrical parts.
Knob: 43mm across the flat edges
Stepped backplate: 180mm x 55mm
Square backplate: 54mm x 54mm
Round backplate: 56mm
Please note: these handles/knobs are unsprung - just like the originals - and so require some help to return them to a horizontal position. You willl therefore need to ensure that the latch or lock used has sufficient spring capacity.