IM- PROVEMENTS IN LAMPS FOR BURNING PARAFFIN OIL AND OTHER VOLATILE HYDRO- CARBONS
Year: 1876

page_text: PROVISIONAL SPECIFICATION left by Joseph Hinks at the Office of the
Commissioners of Patents on the 7th December 1876.
JOSEPH HINKS, of Birmingham, in the County of Warwick, Manufacturer. "IM-
PROVEMENTS IN LAMPS FOR BURNING PARAFFIN OIL AND OTHER VOLATILE HYDRO-
CARBONS."
My Invention has reference to lamps having duplex burners, such as are described
and represented in the Specification of Letters Patent granted to James Hinks and
myself, on the 28th day of October 1865, No. 2787, and my said Invention has for
its object so to construct the said lamps that either a double flame or a single flame
may at pleasure be used in the lamp. For this purpose I modify the duplex burners
of the said lamps, and combine therewith parts constructed in the manner herein-
after described.
Instead of using in the lamp burner two parallel wick cases, as in the duplex
burner before referred to, I use in the burner three parallel wick cases, each wick
case being provided with an independent wick and with an independent pinion for
raising and lowering the wick. The axes of the pinions of the outer wicks both
project from the same side of the burner, while the axis of the pinion of the middle
wick projects from the opposite side of the burner. I remove the middle or summit
of the cone or deflector in which the two slots are usually made for the two flames
to pass through, and fit into the opening thus made in the cone either one or other
of two detachable cone summits constructed as follows:- One of the said detachable
cone summits is provided with a single slot crossing its middle, and has at its
under side and parallel rib and on each side of the slot described a plug. These
plugs have a shape, size, and position proper to fit in the outer wick cases of the
burner. The other detachable cone suminit has sides of a shape proper to form
when combined with the opening in the cone two slots, and has on the middle of
its under side a plug of a shape and size proper to fit in the middle wick case of the
burner.
When it is wished to have a single flame in the lamp the first described detachable
cone summit or the one having a single slot and plug is combined with the opening
in the summit of the conc. When this detachable cone summit is fitted in its
place in the cone its slot coincides with the middle wick case, and the plugs on its
under side fit into the wick cases on each side of the middle wick case. By the
Price 2d1

page_text: fitting of the plugs in the outer wick cases the detachable cone summit is fixed very
securely in its place, and the outer wick cases are closed and the escape of vapour
prevented; a single wick lamp is thereby formed, the flame passing through the
single slot in the conc.
When it is wished to convert the single burner of the lamp into a duplex burner,
or a burner having two parallel flames, the detachable cone summit herein first
described is removed from the cone, and the other detachable cone summit having
a single plug is substituted therefor. When this detachable cone summit is fitted
in its place by the plug passing into the middle wick case and closing it, its outer
sides form with the sides of the opening in the cone two slots through which the
flames from the wicks in the outer cases pass, the burner is thereby converted into
a duplex burner.