IMPROVE- MENTS IN LAMPS
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by Edwin Powley Alexander at the
Office of the Commissioners of Patents on the 31st May 1881. A commu-
nication from abroad by Etienne Gény, of Paris, in the Republic of France.
EDWIN POWLEY ALEXANDER, of 36, Southampton Buildings, in the County of
Middlesex, Consulting Engineer, and British and Foreign Patent Agent. "IMPROVE-
MENTS IN LAMPS." A communication from abroad by Etienne Gény, of Paris, in
the Republic of France.
This Invention relates to moderator, petroleum, and other like lamps, and has
for its object the affording free and more ready access to the wick for the purpose
of lighting and trimming the same, and at the same time facilitating the filling of
the lamp without the necessity for removing the globe or shade chimney or other
parts, and consists essentially in providing a lateral opening in that part of a
moderator, petroleum, or other like lamp which supports the globe and chimney,
and in rendering such part capable of being slid up or down along its axis or
central fixed column, so that the said lateral aperture may be brought opposite to
the wick, and thereby facilitate its lighting and trimming. The attainment of
this object may obviously be carried out in various ways, but according to one
example, the socket which receives the chimney is screwed into the gallery which
supports the globe, so that it may be raised and lowered at will, but after having
been adjusted to the required position to receive the chimney, it need not be
interfered with. These two parts are made to slide together along the fixed
column by the aid of one or more sleeves (according to the height of the column),
also provided with lateral apertures, and sliding telescopically one within the
other. The outer sleeve when two are used is made with a longitudinal slot in
which slides a stop attached to the inner sleeve against which the bottom of the
slot bears when the lateral opening in the gallery is about its mid course.
second or inner sleeve is then acted upon, and by the time the lateral aperture in
the gallery is opposite the wick the bottom of the slot in the inner sleeve bears
against a stop on the fixed column, and the upward motion is arrested. These
slots may be in the form of bayonet slots to enable the parts to be fixed in the
elevated position by a partial rotation of the sleeves causing the stops to engage
in the notches of the slots. Other lateral openings are provided in the sleeves so
CD
The

page_text: as to coincide with the lateral opening in the gallery when at the height required.
The apparatus is fixed to the gallery by two horizontal diaphragms, the upper one
perforated for the admission of air, and the lower one to allow of the passage of
the overflow oil. The whole is supported from below by the collector upon which
rests the lower diaphragm. The employment of two or more sleeves affords greater
facility for adaptation to or alteration of existing lamps than where a single sleeve
only is used. The same general features of sliding sleeve, or sleeves and gallery,
with lateral aperture or apertures for affording a more convenient access to the
wick and to the filling aperture of the lamp without necessitating the removal of
the chimney, and shade or globe is obviously applicable by suitable modifications to
petroleum and other like lamps.