Improvements in or relating to Incandescent Electric Lamps.
Year: 1894

page_text: Date of Application, 1st June, 1894-Accepted, 7th July, 1894
COMPLETE SPECIFICATION.
Improvements in or relating to Incandescent Electric Lamps.
I FREDERICK WILLIAM GOLBY of 36 Chancery Lane, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention as.
communicated to me by Albert Neumann of. Heilbronn o/Neckar, Germany,.
Engineer, and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention relates to an improvement in electric incandescent lamps and has.
for its object to provide a shell or socket for the glass bulb, which equally serves as
a support for the glass shade.
In incandescent lamps as ordinarily constructed the foot of the glass bulb is
surrounded by a socket which guards the contacts between the incandescent lamp.
and the conductors, as also the device for connecting and disconnecting the lamp,
against accidental and wilful contacts from outside, whereby short-circuiting is.
prevented. The said socket is surrounded by a three armed support, carrying
adjusting screws to hold the glass shade.
The improvement which forms the subject of this invention consists in a particular
construction of the said socket of the glass bulb. This construction consists in
cutting from the sides of said socket three strips or tongues, which, being bent
outwards, serve to carry the adjusting screws and save the necessity of applying a
separate shade holder.
In the accompanying drawings Figure 1 represents the lower portion of an
incandescent lamp surrounded by the socket h constructed according to this
invention, and Figure 2 is a plan of the socket h; in Figures and 2 the glass-
shade g is shewn in position. Figures 3, 4 and 5 illustrate several modifications in
the construction of the socket h from which the arms a are formed as supports for
the shade.
As will be seen from the drawings the construction is of great simplicity. The
arms a are cut from the sides of the socket / bent to the outside, dressed with their
ends parallel to the socket, strengthened by small counterplates p and tapped to.
receive the adjusting screws f. The glass shade 9 is mounted by screwing back
the adjusting screws f, placing the lower rim of the shade g, between the arms a,.
and then screwing the screws on again, as.shewn in Figures 1 and 2.
Though it appears scarcely possible, that through the recesses below the arms a„.
such contacts to the conductors could enter from outside, to cause short-circuiting,
yet, if desired, it may be advisable to arrange another shell of thin insulating
material between the socket h, and the foot of the pear, especially if the lamp is
destined to be used in a room where steam or vapours exist.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
For use with incandescent electric lamps, the socket h surrounding the foot of
he glass bulb, and constructed by forming from the material of the said socket
projecting arms a, for carrying the adjusting screws f, serving to support the glass.
hade substantially as described and shewn in the accompanying drawings.
Dated this 1st day of June 1804
F. W. GOLBY,
36, Chancery Lane, London, W.C..