IMPROVEMENTS IN DEVICES FOR HOLDING THE CHIMNEYS OF GAS BURNERS AND OTHER LIGHTING APPARATUS
Year: 1869

page_text: LETTERS PATENT to William Robert Lake, of the "International
Patent Office," No. 8, Southampton Buildings, London, Consulting
Engineer, for the Invention of "IMPROVEMENTS IN DEVICES FOR HOLDING
THE CHIMNEYS OF GAS BURNERS AND OTHER LIGHTING APPARATUS."―A
communication from abroad by Elliott Perry Gleason, of the City
and State of New York, United States of America.
Sealed the 3rd December 1869, and dated the 6th August 1869.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition, on,
the 6th August 1869.
I, WILLIAM ROBERT LAKE, of the "International Patent Office,"
No. 8, Southampton Buildings, London, Consulting Engineer, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN DEVICES
FOR HOLDING THE CHIMNEYS OF GAS BURNERS AND OTHER LIGHTING APPARATUS," a
communication, to be as follows:-
The nature of my Invention consists in improvements in the con-
struction of glass chimney holders for gas burners and other lighting
apparatus as more fully herein-after set forth.

page_text: The chimney holder consists of a ring fitting the body of a gas
burner, and provided with a number of radial arms for supporting the
weight of the chimney, and at the end of each arm is riveted a spring,
which bears against the chimney and holds it securely in its place over
the gas burner. This spring is formed of a strip or plate of metal
riveted to the arm so as to bring the flat portion of the strip or plate of
metal forming it directly against the chimney, while the said arm is
riveted to the ring so as to present its narrow end as the point to which
the spring is riveted. The strip or plate of sheet metal before being
riveted to the arm is bent forward sufficiently to cause it when riveted
to the arm to form a spring, against which the sides of the chimney
when inserted shall bear. A second spring or spring tongue is formed
from the plate or strip of sheet metal forming the spring by punching
it from the body of the strip or plate of metal, in which case the stiffness
of the spring is reduced and the pressure of the two springs upon the
chimney is in a measure equalized; or the said second spring may be
formed of a separate piece of metal and riveted to the first spring, in
which case the second spring is made semi-elliptic in form with its ends
curved, and is so riveted to the first spring that the upper curved portion
shall extend above the point of riveting and the lower curved portion
shall extend below the point of riveting. The strip or plate of sheet
metal is bent so as to project forward from the point of riveting to the
arm, and this is done to give a bearing from the top to the bottom of the
spring when the springs embrace the chimney, and also to allow a
globe or shade holder to be securely held upon the curved ends at the
base of the spring. The plate or strip of sheet metal forming the spring
is riveted so as to bring the flat portion of the metal directly against
the chimney, while the arm is riveted to the ring so that its narrow
portion is presented to the spring, thus permitting the said spring to
accommodate itself to the contraction and expansion of the glass chimney.
The use of the springs formed from one and the same piece of sheet
metal, or by making the second spring semi-elliptic with its ends curved,
and riveting it to the first spring as already described, affords an
equalizing spring embracing the chimney securely, and one which readily
accomodates itself to the expansion and contraction of the chimney.

page_text: -
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 4th February 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the "International Patent Office," No. 8, South-
ampton Buildings, London, Consulting Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of August, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Robert Lake, Her special licence
that I, the said William Robert Lake, my executors, administrators,
and assigns, or such others as I, the said William Robert Lake, 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 "In-
PROVEMENTS IN DEVICES FOR HOLDING THE CHIMNEYS OF GAS BURNERS AND OTHER
LIGHTING APPARATUS," a communication to me from abroad by Elliott
Perry Gleason, of the City and State of New York, United States of
America, upon the condition (amongst others) that I, the said
William Robert Lake, 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, 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 William Robert Lake, do hereby
declare the nature of the 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
accompanying Drawing forming a part of this Specification:-
The nature of my Invention consists in improvements in the con-
struction of glass chimney holders for gas burners and other lighting
apparatus as more fully herein-after set forth.

page_text: I will proceed to describe the same.
DESCRIPTION OF THE DRAWING.
Figure 1 is an elevation of the said improved chimney holder applied
to an argand gas burner; Figure 2 is a section of the same; Figure 3
illustrates a modification of the said Invention; Figure 4 shews a semi-
Like parts in the various
elliptic spring sometimes used therewith.
Figures of the Drawing are indicated by similar letters of reference.
The chimney holder consists of a ring D fitting the body A of a gas
burner, with a number of radial arms n for supporting the weight of the
chimney I; at the end of each arm is rivetted a spring f, which bears
against the chimney I to hold it securely in its place over the gas burner.
This spring is formed of a strip or plate of metal rivetted to the
arm n so as to bring the flat portion of the strip or plate of metal
forming it directly against the chimney, while the said arm n is rivetted
to the ring D so as to present its narrow end as the point to which the
spring is rivetted. The strip or plate of sheet metal before being
rivetted to the arm n is bent forward sufficiently to cause it when
rivetted to the arm n to form a spring, against which the sides of the
chimney when inserted shall bear. i is a second spring or spring tongue
formed from the plate or strip of sheet metal constituting the spring f
by punching it from the body of the strip or plate of metal, in which case
the stiffness of the spring f is reduced and the pressure of the two
springs upon the chimney is in a measure equalized; or the spring i may
be formed of a separate piece of metal and rivetted to the spring f, in
which case the spring i is made semi-elliptic in form with its ends
curved, and is so rivetted to the spring f that the upper curved portion
shall extend above the point of rivetting, and the lower curved portion
shall extend below the said point of rivetting. It will be observed that
the strip or plate of sheet metal is bent so as to project forward from
the point of rivetting to the arm n, and this is done to give a bearing
'from the top to the bottom of the spring when the springs embrace the
chimney, and also to allow a globe or shade holder to be securely held
upon the curved ends at the base of the spring f. It will further be
observed that the plate or strip of sheet metal forming the spring fis
rivetted so as to bring the flat portion of the metal directly against the
chimney, while the arm n is rivetted to the ring D so that its narrow

page_text: portion is presented to the spring f, thus permitting the spring f to
accomodate itself to the contraction and expansion of the glass
chimney. The use of the springs fand i formed from one and the same
piece of sheet metal, or by making the spring i semi-elliptic with its
ends curved and rivetting it to the spring f as already described, affords
an equalizing spring embracing the chimney securely, and one which
readily accomodates itself to the expansion and contraction of the
chimney.
Having thus fully described the said Invention as communicated to
me by my foreign correspondent, I claim,
First. The plate or strip forming the spring f bent or curved,
substantially as described.
Second. The spring f rivetted to the arm n, substantially as set
forth.
Third. The equalizing spring for chimney holders constructed
substantially as set forth.
In witness whereof, I, the said William Robert Lake, have here-
unto set my hand and scal, this
day of February, in the
year of our Lord One thousand eight hundred and seventy.
WILLIAM ROBERT LAKE. (L.S.)
Witness,
H. J. GEDGE,
Clerk to Messrs. Haseltine, Lake, & Co.,
Southampton Buildings,
London.