IMPROVEMENTS IN FIRE-BARS
Year: 1860

page_text: LETTERS PATENT to William Stratford, of Mile End Old Town, in the
County of Middlesex, Engineer, for the Invention of "IMPROVEMENTS IN
FIRE-BARS."
Sealed the 26th November 1860, and dated the 2nd June 1860.
PROVISIONAL SPECIFICATION left by the said William Stratford at the
Office of the Commissioners of Patents, with his Petition, on the 2nd
June 1860.
I, WILLIAM STRATFORD, of Mile End Old Town, in the County of Middlesex,
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN FIRE-BARS," to be as follows:
This Invention has reference to the perforated class of fire-bars, the object
of which is it allow a better and more diffused supply of air to pass upward
from beneath the grate to the burning fuel than is attainable with the ordinary
plain bars. It consists in constructing the bars with a number of holes or
perforations of any convenient form, passing vertically upward through the
heads of the bars in such manner as to avoid cutting into or removing any
portion of the web or feather of the bar.
By forming bars according to my Invention as described, a straight and
free passage is obtained for the air from the under side to the upper table or
surface of the bar to promote the combustion of the fuel; while the bar
itself having its web or feather entire is considerably stronger in form than
bars wherein a portion of the web or feather is removed for the purpose of
giving passage to the air.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Stratford in the Great Seal Patent Office on the
1st December 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
STRATFORD, of Mile End Old Town, in the County of Middlesex, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of June, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-third year of Her reign.
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Stratford, Her special licence that I, the said William Stratford, my
executors, administrators, and assigns, or such others as I, the said William
Stratford, 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 "IMPROVEMENTS IN FIRE-BARS,"
upon the condition (amongst others), that I, the said William Stratford,
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 Stratford, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, and accompanying Drawing (that is to say):-
This Invention bas reference to the perforated class of fire-bars, the object
of which is to allow a better and more diffused supply of air to pass upward
from beneath the grate to the burning fuel than is attainable with the ordinary
plain bars.
It consists in constructing the bars with a number of holes or
perforations of any convenient form, passing vertically upward through the
heads of the bars in such manner as to avoid cutting into or removing any
portion of the web or feather of the bar.
By forming bars according to my Invention as described, a straight and
free passage is obtained for the air from the under side to the upper table or
surface of the bar to promote the con:bustion of the fuel, while the bar

page_text: giving passage to the air.
DESCRIPTION OF THE DRAWINGS.
Fig. 1, of the accompanying Sheet of Drawings, represents a side elevation
of a fire-bar constructed according to my said Invention; Fig. 2, a plan or top
view of the same; Fig. 3, a view of the under side, and Fig. 4, a transverse
section thereof, taken through the line z, of Fig 1. Similar parts are marked
with the same letters of reference throughout.
یا
a represents the web or feather of the bar, and the holes or perforations
for the passage of air, the number and form of which may be more or less
varied to suit circumstances. Fig. 5 is an under side view, and Fig. 6, a
transverse section (through the line 2, of Fig. 5, of a fire-bar differing from
the foregoing, in having the whole of the holes or perforations b situated
at the same side of the web or feather a of the bar. Figs. 7 and 8 are
corresponding views of a bar constructed with two rows of holes or per-
forations (b) on each side of its web or feather a. Fig. 9 is a view of the
under side of a bar, the web or feather a of which is corrugated or waved in
form instead of being straight as in the previously described bars. Fig. 10°
is a transverse section of the same through the line z of Fig. 9.
Having now fully described and ascertained the nature of my said Invention
and the manner in which the same may be performed, I would have it under-
stood that I do not confine myself to the precise form, number, or arrangement
of perforations represented, as the same, together with the form of the bar,
may be more or less varied to suit circumstances without departing from the
nature of my Invention, with reference to which, I claim the construction of
fire-bars, substantially as described.
In witness whereof, I, the said William Stratford, have hereto set my
hand and seal, this First day of December, in the year of our Lord
One thousand eight hundred and sixty.
Witness,
WILLIAM (L.S.) STRATFORD.
FRANCIS WISE, C. E., Patent Agent.
Chandos Chambers, Buckingham St., W. C.