Chilled Fire Bars Designed for Burning Smoke for Furnaces of all Descriptions.
Year: 1889

page_text: Cate of Application, 2nd Mar., 1889
Complete Specification Left, 2nd Aug., 1889-Accepted, 7th Sept., 1889
PROVISIONAL SPECIFICATION.
Chilled Fire Bars Designed for Burning Smoke for Furnaces of all
Descriptions.
ROBERT HOLLINGDRAKE Ironfounder Heaton Lane Stockport do hereby declare
the nature of this invention to be as follows:-
Two Castings or Bars cast in the form of a channel, which when placed together
side by side form a Fire Bar with Cavity or Air. Space through from end to end.
The two castings being Bolted or Rivetted together. Each compłote Bar having the
face & edges chilled where exposed to the fire.
The object of the Cavity or Air Space through each Bar being for the purpose of
keeping the bar cool & for the passage of Air through & behond the bridge of Boiler
by Igniting and Burning the Smoke from furnace when passing over above
named bridge of Boiler. The Bars may be cast in one or more lengths as most
convenient.
COMPLETE SPECIFICATION.
Chilled Fire Bars Designed for Burning Smoke for Furnaces of all
Descriptions.
1, ROBERT HOLLINGDRAKE, Ironfounder Heaton Lane Stockport, do hereby
declare the nature of invention and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
My invention relates to the manufacture of chilled fire bars designed for burning
the unconsumed gases escaping in the form of smoke from furnaces.
In manufacturing fire bars according to my invention I form each fire bar of two
castings which when united form a hollow fire bar with a longitudinal cavity or
internal air passage extending from end to end, each complete bar having its face and
edges chilled where exposed to the fire.
And in order that my invention may be fully understood and readily carried into
effect I will describe the accompanying Sheet of Drawings reference being had to the
figures and letters marked thereon.
Figure 1 is a side elevation and Fig. 2 a plan of a completed fire bar made according
to my Invention.
Figs. 3 and 4 are transverse vertical sections Fig. 3 showing the two parts separated
and Fig. 4 showing them united.
In these views the two separate castings a a as shown are so designed and shaped
as that when placed together as shown in Figs. 3 and 4 and united by bolts or rivets c
a perfect fire bar is formed having an internal air chamber or passage d extending
centrally throughout the whole length of the bar. I form cach casting with external
ribs or distance pieces 6 and I prefer to chill the upper. face and edges of the castings
as indicated by the darkened portion a' on the Drawings.
It will be readily understood that the object of having the longitudinal air passage
through each bar is to carry a supply of air beyond the bridge of the boiler and so
cause the consumption of a large volume of the gases which would otherwise escape
unconsumed in the form of dense black smoke.
The great advantage of casting each bar in two separate parts is that the said
parts can be readily inspected before being placed and secured together and further
this construction facilitates the operation of moulding and casting and of chilling the
exposed surfaces.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
The construction of fire bars each made up of two separate and distinct castings
secured together by bolts or rivets and having a longitudinal air chamber or passage
extending from end to end the surfaces of said "bars exposed to the fire being
preferably chilled all substantially as herein set forth.
Dated this First da, August 1990.
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicant.