Improvements in Combined Lamp-shades and Reflectors

Improvements in Combined Lamp-shades and Reflectors

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 , p , the different series being superimposed one above the other in a steplike manner. One of...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: ALEXANDER PAXTON MCARTHUR
Format: Patent
Sprache:eng
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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 , p , 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 , P 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.