IMPROVE- MENTS IN LAMPS AND IN APPARATUS CONNECTED THEREWITH
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by John Weir at the Office of the Com-
missioners of Patents on the 16th April 1878.
JOHN WEIR, of Castledawson, in the County of Londonderry, Ireland. "IMPROVE-
MENTS IN LAMPS AND IN APPARATUS CONNECTED THEREWITH."
My Invention relates to lamps for burning petroleum, paraffin or other mineral
oil, and consists of the improvements herein-after described, whereby important
advantages are obtained.
One part of my Invention consists in applying and connecting the upper portion
of the burner, which is composed of the cone with the gallery attached, to the lower
portion of the burner by means of a bayonet joint, so as to admit of the two portions
being readily connected and disconnected at pleasure. By this means great facility
is secured in the operation of lighting the lamp, as the upper portion of the burner
with the glasses are lifted off bodily, and the trouble and inconvenience attending
the removal of the glasses from the burner and gallery as in the ordinary method
are entirely obviated.
Another part of my Invention relates to means for facilitating the supply of oil
to the lamp, and it consists in the employment of a tube which is attached to the
lower portion of the burner and in its normal position extends down into the fount
or reservoir, but which is capable of being slid or raised when it is required to fill
the lamp, so as to bring an opening with which it is provided above the upper part
of the fount or reservoir and thus admit of the oil being supplied to the latter
through the said opening in the tube.
My Invention also relates to means of extinguishing lamps, & it consists in the
employment in the wick tube or tubes of one or more hinged flaps arranged in such
a manner as to close the tube or tubes and act as extinguishers when the wick
or wicks are turned down below them, but to be moved back by the passage of
the wick or wicks in the act of elevating the latter.
In the case of duplex lamps I provide a means of raising and lowering both
flames simultaneously in addition to the ordinary devises for acting separately and
indepentently on each flame. For this purpose I employ additional wick cases
surrounding the ordinary wick holders, and arranged in such a manner as to be
Price 21

page_text: capable of being elevated or depressed simultaneously by levers or rotatory spurs or
teeth operated by a handle or by other convenient devices whilst the wicks remain
stationary, the same having been previously adjusted by the ordinary means.
Projections inay if necessary be formed on the cases so as to hold the wicks
out of contact with the sides of the cases and thus prevent the conduction of
heat.
5.
In applying the flaps herein-before referred to for extinguishing to this improved
duplex lamp I hinge the flaps to the interior of the additional wick cases in such a
manner as to admit of their falling over the ordinary wick holders when the cases
are raised to a given height.
My Invention further relates to instruments for trimming lamp wicks, and
consists in the employment for that purpose of a spring clip, one or both of the edges
of which are bent round so as when pressure is applied to the clip to grip the wick
and by being drawn over the same remove the partially consumed portion with any
particles adhering to the wick.