GAS LAMPS AND BURNERS FOR THE SAME
Year: 1867

page_text: GAS LAMPS AND BURNERS FOR THE SAME."
PROVISIONAL SPECIFICATION left by the said Louis Lenzberg at the
Office of the Commissioners of Patents, with his Petition, on the
20th September 1867.
I, LOUIS LENZBERG, of Oxford Street, in the County of Middlesex, Gas
Engineer, do hereby declare the nature of the said Invention for "IMPROVE.
MENTS IN GAS LAMPS AND BURNERS FOR THE SAME," to be as follows, that is
to say:
My Invention has for object the increasing the illuminating power of gas in
outside and inside gas lamps, and consists,-
Firstly. In adapting to gas lamps a reflector similar to that used in "sun"
lights" of metal or earthenware, enamelled, silvered, painted, or glazed, or
prepared with any other suitably reflecting surface, and of a conical,- hemi-
spherical, or other suitable shape, in combination with the ordinary sun light
burner, or with the improved burner herein-after described.
Secondly. In an improved burner. The reflector and burner are placed
inside the lamp frame, one or more openings being left in the reflector for the
escape of heated air. Spaces or openings are left or made around the lamp,
frame to form a current for carrying off the heated air and for. cooling the
reflector. The lamp frame is so constructed that its top or bottom is remove-
able or moveable on hinges to permit of cleaning or repairs.. The lamp may
[Price 8d.]

page_text: be constructed so that the reflector forms the top of the lamp, the lower part
of the frame is in this case attached to the reflector itself, proper spaces being
left in the bottom of the lamp frame, and also between the bottom of the
reflector and the frame, or in the bottom of the reflector. The reflector
may be made with an outer cover or jacket, with an intervening space for
the purpose of reducing the heat by the introduction of air or of a cooling
substance, such as sand, clay, or other cooling substance.
The improved burner is hollow, and is made of fire-clay, or metal and fire-
clay combined, of a circular or other suitable form, its horizontal periphery
or edge being perforated according as it is required to produce a fish-tail,
bat's wing, or other light of intense brilliancy.
In some cases an ordinary burner may be adapted to the outside of the
reflector to throw a light upwards, or the reflector may be so formed as to
produce the same effect, or glass or other suitable reflectors may be adapted
to the bottom of the lamp.
SPECIFICATION
in pursuance of the conditions of the Letters Patent, filed
by the said Louis Lenzberg in the Great Seal Patent Office on the
20th March 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LOUIS
LENZBERG, of Oxford Street, in the County of Middlesex, Gas Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of September, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Louis Lenzberg, Her special licence that I, the said Louis Lenzberg,
my executors, administrators, and assigns, or such others as I, the said
Louis Lenzberg, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE.
MENTS IN GAS LAMPS AND BURNERS FOR THE SAME," upon the condition
(amongst others) that I, the said Louis Lenzberg, my executors or
administrators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be performed,

page_text: and cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Louis Lenzberg, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement, reference being had to the Drawing hereunto annexed, and to the
figures and letters marked thereon, that is to say:-
My Invention has for object the increasing the illuminating power of gas in
outside and inside gas lamps, and consists,--
Firstly. In adapting to gas lamps a reflector similar to that used in "sun
lights" of metal or earthenware, enamelled, silvered, painted, or glazed, or
prepared with any other suitably reflecting surface, and of a conical, hemi-
spherical, or other suitable shape, in combination with the ordinary sun light
burner, or with the improved burner herein-after described.
Secondly. In an improved burner. The reflector and burner are placed
inside the lamp frame, one or more openings being left in the reflector for the
escape of heated air. Spaces or openings are left or made around the lamp
frame to form a current for carrying off the heated air and for cooling the
reflector. The lamp frame is so constructed that its top or bottom is remove-
able or moveable on hinges to permit of cleaning or repairs. The lamp may
be constructed so that the reflector forms the top of the lamp; the lower part
of the frame is in this case attached to the reflector itself, proper spaces being
left in the bottom of the lamp frame and also between the bottom of the
reflector and the frame, or in the bottom of the reflector. The reflector
may be made with an outer cover or jacket, with an intervening space for
the purpose of reducing the heat by the introduction of air or of a cooling
substance, such as sand, clay, or other cooling substance.
The improved burner is hollow, and is made of fire-clay, or metal and fire-
clay combined, of a circular or other suitable form, its horizontal periphery
or edge being perforated according as it is required to produce a fish-tail, bat's-
wing, or other light of intense brilliancy.
In some cases an ordinary burner may be adapted to the outside of the
reflector to throw a light upwards, or the reflector may be so formed as to
produce the same effect, or glass or other suitable reflectors may be adapted
to the bottom of the lamp.
To make my Invention better understood I will now proceed to describe it
by reference to the accompanying Drawing, which shews several of the
arrangements for carrying out my Invention.

page_text: Figure 1 is a view, half in elevation and half in section, of a lamp such as
is generally used for the outside of taverns and other similar establishments;
Figure 2, elevation of a hexagonal-shaped lamp on the same principle;
Figure 3, elevation of a lamp, in which the reflector forms the top of the
lamp; Figure 4, elevation of a spherical lamp shewing the reflector on the
top; Figure 5, elevation of a lamp supported on a post and constructed on
the same principle as Figure 3; Figures 6 and 7, views of my improved
burner; and Figure 8, elevation (half in section) of a reflector with jacket
and burner detached from a lamp, shewing also burners for throwing the
light upwards. Similar letters of reference are used in the several Figures
to represent parts which are similar..
In Figure 1a shews the reflector, and b the burner placed inside the
lamp frame c, c, c; in this case the reflector is nearly hemispherical, an
opening being left in the top for the escape of the heated air. The burner b
is supplied with gas by the pipe e, which also serves to suspend the lamp in
the usual manner. Spaces or openings f, f, are made or left around the
lamp frame to cause a current to carry off the heated air and for cooling the
reflector. The top part c¹ of the lamp frame is removeable, as shewn, or if
required the bottom part could be made removeable, or either the top or
bottom parts could be made moveable on hinges. The shape of the reflector
may be varied, in Figure 2 it is shewn (in dotted lines) smaller and more
shallow than in Figure 1. It could if desired be made of an octagonal,
hexagonal, or other suitable shape according to requirements. The burner b
shewn in these Figures is the ordinary "sun-light" burner, but my improved
burner, herein-after described, could be employed if desired. Figures 3 and 5
shew elevations of lamps in which the reflectors a, a, (made of glazed earthen-
ware, commonly called opal, or other suitable reflecting material) form the
tops of the lamps, the frames c, c, being attached to the reflectors a, a.
Proper spaces are left or made in the bottom of the lamp frame and also
between the bottom of the reflector and the frame, as shewn at f, f, or they
may be made in the bottom of the reflector. In the form of lamp, Figure 5,
the reflector could be placed inside, as shewn by the dotted lines, when the top
would be glazed in the usual way; this lamp is supplied with gas from below
instead of from above, as in the other Figures. Also if in the lamp shewn in
Figure 1 it is wished that the top of the lamp should form the reflector it
would only be necessary to remove the reflector a and fill in the top c¹ of the
frame with opal or other suitable material with a reflecting surface, instead of
glazing the same with glass. In this case the top of the lamp forms a sun-
light reflector, and need not be made removeable. Figure 8 shews a detached

page_text: view, half in elevation and half in section, of a reflector a made with an outer
jacket g, the intervening space i serving for the reception of sand, clay, or
other cooling substance for reducing the heat. In this Figure h, h, represent
ordinary burners which serve to throw a light upwards; but in some cases I
obtain the same result by means of suitable reflectors adapted to the bottom
of the lamp, as shewn at n, Figure 1, or an ordinary burner may be placed at
the bottom of the lamp. Figure 6 is a plan and elevation (drawn to a large
scale) of my improved burner made of fire-clay, it is shewn circular on plan,
but it may be of any other suitable shape, such, for instance, as the ordinary
sun-light burner, its periphery being perforated according to the light required;
and Figure 7 shews a plan and elevation of my improved burner made of
metal and fire-clay; this fatter burner consists of a hollow metal ring sup-
plied with gas by the pipe I, while m, m, are plugs of fire-clay fitted in the
ring and perforated according to the light required. It could be made of any
other suitable shape than that shewn.
Having now described the nature of my Invention, and the manner of per-
forming the same, I wish it to be understood that I do not confine myself to
the precise details herein laid down and shewn in the Drawing: but what I
claim is,
Firstly. The application to gas lamps of a sun-light reflector, and sun-light
or other suitable burner, substantially in the manner and for the purposes
herein-before described and shewn in Figures 1 and 2 of the accompanying
Drawing.
Secondly. The forming the tops of gas lamps with a sun-light reflector, as
herein-before described and shewn in Figures 3, 4, and 5 of the accompanying
Drawing.
In witness whereof, 1, the said Louis Lenzberg. have hereto set my
hand and seal, this Nineteenth day of March, in the year of our
Lord One thousand eight hundred and sixty-eight.
Witness to the signature of
the said Louis Lenzberg,
W. N. WILSON,
144, High Holborn.
LOUIS LENZBERG. (L.S.)