CERTAIN IMPROVEMENTS IN LAMPS
Year: 1852

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, AUGUSTE
NEUBURGER, of Rue Vivienne, Paris, France, Lamp Manufacturer, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Ninth day of February,
in the fifteenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Auguste Neuburger, my exors, admors, and
assigns, Her especial licence, full power, sole privilege and authority, that I,
the said Auguste Neuburger, my exors, adiñors, and assigns, or such others
as I, the said Auguste Neuburger, my exors, admors, or assigns, should at any
time agree with, and no others, from time to time and at all times during the
term of years therein expressed, should and lawfully might make, use, exercise,
and vend, within England, Wales, and the Town of Berwick-upon-Tweed,
and in the Islands of Guernsey, Jersey, Alderney, Sark, and Man, and
in all Her Majesty's Colonies and Plantations abroad, my Invention of
"CERTAIN IMPROVEMENTS IN LAMPS;" in which said Letters Patent is contained
a proviso that I, the said Auguste Neuburger, should cause a particular
description of the nature of the said Invention, and in what manner the
same is to be performed, by an instrument in writing under my hand and
seal, to be enrolled in Her said Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said in part

page_text: recited Letters Patent, as in and by the same, reference being thereunto had,
will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Auguste Neuburger, do hereby declare that the nature of the said Invention,
and the manner of carrying the same into effect, are particularly described and
ascertained in and by the following statement thereof, reference being had to
the Drawing hereunto annexed, and to the letters and figures marked
thereon, that is to say :-
My Invention consists in certain modifications in the construction of
moderator lamps, by which the range of the piston and ascension tube is
made equal to the capacity of the reservoir cylinder, and so increase the time
of burning of the lamp. Hitherto the burning of the moderator lamp has
been made to last a short period only, and which has never been made to
equal that of the carcel, which burns during nine to ten hours. The reason
of this is, that the supply of oil to the burner of the moderator lamp is limited
by the range of the piston, and the range of the piston is limited by the height
of the burner; that is to say, the distance between the top of the cric box and
the summit of the burner is too short; that distance is generally four inches,
and although the reservoir cylinder is eight or nine inches high, only the depth
of four inches is utilized, which is the length to which the range of the cric is
now confined. The reason for not raising the piston higher, as is well known,
is, that the cric would in that case exceed the height of the burner and
trouble the flame. The object of my Invention is to utilize the whole capacity
of the reservoir cylinder for the alimentation of the burner, and preserve the
ordinary dimensions of the moderator lamp. For that purpose I apply a tube
or box, in which the cric is made to enter after raising the piston to the top
of the reservoir cylinder.
The Figs. 1 and 2 shew two arrangements of mechanism for obtaining the
above results, which, however, may be modified or changed; I give preference
to that shewn in Figure 1. Figure 1 is a side view of a piston set up. A is a
tube of a square, round, or oval form, shut air tight at bottom, and open at top
only sufficiently to allow the cric B to slide in it. C is a ring fixed to the
cric B to prevent it escaping from the tube A, which is soldered to the centre
of the piston fittings. The height of the tube A, which I call a slide, is three
inches; if, when the cric is raised to the full extent, it exceeds the burner three
inches, and in general the tube A must be of the same length as the part of
the cric that exceeds the burner when the piston is entirely raised-when the
oric exceeds the height of the burner, it is merely necessary to turn the key in
a reverse direction to cause the cric to descend to the bottom of the tube, so as

page_text: to be on a level with the burner. D is the ascension tube, which, instead of
being soldered to the mountings of the piston, slides through it in the leather
box E; a metallic ring F is .ixed a little above the lower extremity of the
tube D, and a metallic ring H is fixed a little above the middle of the total
length of the said ascension tube This tube D is as long as from the bottom
of the lamp to the bottom of the leather box J, Fig. 4. When the piston is
raised it slides against the ring H, and thus draws the ascension tube up with
it, which slides into the box J, Fig. 4, of the burner. When the piston
descends it slides first from the ring H to the ring F, and causes the tube to
slide through the box J; and when the piston has finished its stroke it presses
the bottom of the tube on the leather N, at the bottom of the lamp, Fig. 4, so
as to keep oil in the burner. The ascension tube, extending from the bottom
of the lamp to the bottom of the leather box J, is prevented from getting out
of the box. Fig. 2 shews that in lieu of the box A, Fig. 1, the same system
applied to the ascension tube may be applied to the cric. Instead of the
groove A¸ a leather box K is set in the middle of the piston fittings; the lower
part of the cric is round instead of being square, and a metallic ring L is
soldered to the bottom part of the tube, by which the piston may be raised as
high as desirable. The ring L in pressing against the piston will cause it to
rise; and by turning the key in a contrary direction the cric will slide into the
box K, and descend to the level of the burner. Other similar means may be
employed for raising and lowering the cric, the principle of the Invention
consisting in raising it above the level of the burner, and then enabling it to
descend, and not in the precise mode of obtaining that result. Figure 3 shews
another arrangement of ascension tube. At the lower extremity of the tube O,
which is set in the branch G of the lamp, Fig. 4, a small bar P is adjusted,
provited with a hole made screw-wise in the centre. At the lower extremity of
that tube a leather box J is set, in which an ascension tube R. slides. That tube
is also provided at its lower part with a leather box S, in which another ascen-
sion tube T slides, of a smaller diameter. The tube T is soldered at its base
to the mountings of the piston. Each of the ascension tubes is provided at
its upper part with a small ring marked U, to prevent it egressing from the
leather boxes. The length of the ascension tube R is equal to that of the
tube O from the box J to the bottom of the bar P. The length of the
tube T is the same as the tube R from the top of the mountings of the
piston. The tube T passes through the piston and exceeds it, so as to press
on the leather N at the bottom of the lamp, Fig. 4, and make the oil remain
in the burner when the piston is at the bottom of the lamp. M is a nut
made screw-wise to prevent the cric from getting out of place. V is a mode-

page_text: rator, the upper extremity of which is made with a worm, so as to screw into
the bar P, and remain fixed at the upper extremity and not be drawn along
with the ascension tube. The moderator is cut in the form of a whistle,
or is of a conical shape (thinner at bottom than at top), which has the effect
of regulating and moderating the ascension of the oil, more the piston descends,
more the spring distends, the force diminishes; and the ascension tube sliding
on the moderator enlarges the opening, which gives passage to the oil, and
facilitates the regular ascension of the necessary amount of combustible for
the stimulation of the lamp.
Figure 4 shews a lamp constructed with the improvements herein pointed
out and in a working condition. I do not think it necessary to describe the
different parts of the moderator lamp, which are well known, but confine
myself to the description of the organs of my Invention. By my improve-
ments I obtain a lamp of a simple, strong, and cheap construction, capable of
burning from twelve to fourteen hours, a desideratum so long sought for in
vain.
And having now described the nature of my said Invention, and the manner
of performing the same, I wish it to be understood that I do not confine
myself to the precise details of construction herein-before described; but what
I do claim as my said Invention, and intend to be protected by the said
Letters Patent, is,-
Firstly, the causing the cric to redescend to the level of the burner after
having raised the piston to the top of the reservoir cylinder for lengthening
the range of the piston, as herein described and referred to in reference to
Figs. 1, 2, and 4.
Secondly, the mechanical arrangements for increasing and diminishing the
length of the ascension tube, as herein described and referred to in Figures 1,
3, and 4.
In witness whereof, I, the said Auguste Neuburger, have hereunto set
my hand and seal, the Sixth day of August, One thousand eight
hundred and fifte twe

page_text: This is the Specification marked A referred to in the Affidavit of Henry
Gilbee, sworn before me, this 7th day of August, 1852.
HENRY MOWBRAY.
Henry Gilbee, of 4, South Street, Finsbury, in the County of Middlesex,
Clerk to Mr. Peter Armand Le Comte de Fontaine Moreau, Patent Agent,
maketh oath and saith that he is acquainted with the manner and character
of the handwriting of Thomas Pickford, Her Britannic Majesty's Consul at
Paris, in the Republic of France. And this Deponent further saith that the
signature "Thomas Pickford," set, subscribed, or written in the margin of the
Specification hereunto annexed marked A, and dated the Sixth day of August
instant, and purporting to be executed by Auguste Neuburger, of Paris,
whereby it is stated that the Specification was acknowledged by him, the
said Auguste Neuburger, before the said Thomas Pickford, on the said Sixth
day of August instant, at Paris aforesaid, is of the proper handwriting of the
said Thomas Pickford.