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Alexander Paxton Mcarthur
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Publication of GB190518820ApublicationCriticalpatent/GB190518820A/en
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Abstract
18,820. McArthur, A. P. Sept. 19, 1904, [date applied for under Patents Act, 1901]. Lamp shades; reflectors.-The outer surface of a combined lamp shade and reflector is provided with series of prisms P, P<1>, p<111>, the different series being superimposed one above the other in a steplike manner. One of the series of prisms may consist of two sets P<1>, P<11> of different lengths. The neck of the reflector is formed with internal ribs or detachable projections for resting on a chimney or an electric lamp bulb or globe.
GB190518820D1904-09-191905-09-18Improvements in Combined Lamp-shades and Reflectors.
ExpiredGB190518820A
(en)
New or Improved Combined Globes and Shades for Incandescent Electric Lamps and for Electric Arc Lamps, and for Facilitating the Application of Advertisements thereto.