AN IMPROVEMENT ON PORTABLE LANTHORNS OR LAMPS, APPLICABLE TO VARIOUS PURPOSES
Year: 1820

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, Jonn
LEBERECHT STEINHAUSER, of Moffatt Terrace, City Road, in the County of
Middlesex, Artist, send greeting.
WHEREAS His most Excellent Majesty King George the Third did, by
His Letters Patent under the Great Seal of the United Kingdon of Great
Britain and Ireland called England, bearing date at Westminster, the Fifteenth
day of January, in the sixtieth year of His reign, give and grant unto me,
the said John Leberecht Steinhauser, my exors, adiñors, and assigns, His
especial licence, full power, sole privilege and authority, that I, the said John
Leberecht Steinhauser, my exors, adññiors, and assigns, during the term of
years therein mentioned, should and lawfully might make, use, exercise, and
vend, within England, Wales, and the Town of Berwick-upon-Tweed, my
Invention of "AN IMPROVEMENT ON PORTABLE LANTHORNS OR LAMPS, APPLICABLE
TO VARIOUS PURPOSES;" in which said Letters Patent there is contained a
proviso that if I, the said John Leberecht Steinhauser, shall not particularly
describe and ascertain the nature of my said Invention, and in what manner
the same is to be performed, by an instrument in writing under my hand and
seal, and cause the same to be inrolled in His Majesty's. High Court of
Chancery within two calendar months next and immediately after the date of
the said Letters Patent, that then the said Letters Patent, and all liberties and
advantages whatsoever thereby granted, shall utterly cease, determine, and
become void, as in and by the same (relation being thereunto had) will more
fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
John Leberecht Steinhauser, do hereby declare that the nature of my said
Invention, and the manner in which the same is to be performed, are parti-
cularly described and ascertained in the following description thereof and
Drawings hereunto annexed (that is to say):-
My improvement in lanthorns consists principally in the adaptation of a tube
or shade to slide over the lanthorn in order to darken it, when it may be used
for a night or chamber lamp, or when the shade is drawn up it is to be
suspended by a ring and carried as a lanthorn. In the form or construction
of the burner no improvement is proposed, as that may be of any ordinary kind,
or a candle may be used to the lanthorn in place of a lamp. The form of the
lanthorn is proposed to be cylindrical, the lower part being a rim of brass or
other metal attached to or constituting part of the lamp. From this rim two,
three, or more standards rise as guards to a cylindrical glass, within which
incloses the burner, and upon these standards a cylindrical tube of metal or
other opake substance (intended as a cover or shade) slides up and down by
means of grooves or channels upon the cylindrical tube in which the standards
act. At the top of the sliding shade the pendant draws out, which opens the
chimney of the lamp, and when the sliding shade is nearly shut down, and
the pendant up the chimney being still open and the vent holes uncovered,
the light continues to burn inclosed, making a dark lanthorn, but upon the
pendant being shut down the light is extinguished, and the lanthorn may be
put into the pocket.
Fig. 1 represents the lanthorn shut up. Fig. 2 represents the same opened,
in which (a) is the rim of metal attached to the lamp, or it may be the frame
of the lamp itself; (b, b, b,) the standards; (c), the cylindrical glass; (d), the
cylindrical shade sliding down upon the standards b, b, b; e, e, the legs of the
pendant sliding through the plate (f), in which plate is an opening for the
chimney; (g), the top plate which on being shut down closes the chimney
and extinguishes the light; (h), the ring or pendant; (i), a small stud attached
to a piece of tube sliding upon the standard (6) with a knotched piece to lift
the glass up in order to light or trim the lamp. Fig. 3 shews the plate (f)
belonging to the sliding shade detached with the notches for the legs of the
pendant to pass in. Fig. 4 is the pendant detached with the plate (f).
Fig. 5 shews the lower part of a lanthorn which is intended to burn a candle.
Fig. 6, the candlestick detached, which is fixed to the lower rim of the
lanthorn (a) by a bayonet attachment, and fastened by the finger screw (k).
When (k) is unscrewed and the candlestick turned round in the rim (a) so as
to disengage it from the bayonet fastening it will come out, as represented at

page_text: Fig. 6. Fig. 7 shews the male & female screw by which the glass of Fig. 5
is fixed and unfixed.
This my Invention I consider to be applicable to various purposes, viz', it
may be used for a night or chamber lamp, it may be also used as an ordinary
lanthorn for waggons, carriages, halls, as well as for every other purpose of an
ordinary lanthorn, and may be shut up for the pocket. Such a lanthorn will
also be found very useful on ship board. The cylindrical shade effectually
secures the glass from being broken, and the upper plate of the pendant when
shut down instantly extinguishes the light without any noxious smell. This
description of lanthorn being a cylinder of glass without obstruction will
disseminate more light than any other description of lanthorn.
Lastly, though I have described a cylindrical lanthorn, and certainly prefer
that form, yet any small deviation from that form, having the shade or parts as
above described, I shall consider as an infringement of my Invention.
In witness whereof, I, the said John Leberecht Steinhauser, have here-
unto set my hand and seal, this Thirteenth day of March, in the year
of our Lord One thousand eight hundred and twenty.
JOHN LEBERECHT (L.S.) STEINHAUSER.
AND BE IT REMEMBERED, that on the Thirteenth day of March, in
the year of our Lord 1820, the aforesaid John Leberecht Steinhauser cane
before our said Lord the King in His Chancery, and acknowledged the
Specification aforesaid, and all and every thing therein contained and specified,
in form above written. And also the Specification aforesaid was stamped
according to the tenor of the Statute made for that purpose.
Inrolled the Fifteenth day of March, in the year of our Lord One
thousand eight hundred and twenty.