Improvements in the Manufacture of Furnace Fire Bars.
Year: 1894

page_text: Date of Application, 6th Sept., 1894
Complete Specification Left, 6th June, 1895-Accepted, 20th July, 1895
-
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Furnace Fire Bars.
We THOMAS DAVIES and SAMUEL DAVIES of Rhostyllen Foundry Wrexham,
in the County of Denbigh, Engineers, do hereby declare the nature of this.
invention to be as follows:-
The object is to enable hollow fire bars to be constructed easily and cheaply
without cores, such fire bars being efficiently available for the passage of fluid
therethrough in
any usual
way and readily renewable when necessary.
Fire bars under our invention are cast in two parts are recessed longitudinally
and are adapted to fit together lengthwise so as to make joint and have a way or
passage therethrough formed by the recesses. The said combined bars are so
formed or shaped transversely as to fit into two or more recessed bearers which
lock or retain the longitudinal halves of each bar together.
Any usual or suitable fittings are combined with the said bars to enable fluid
preferably air to pass therethrough.
Dated this 5th day of September 1894.
J. JOHNSON,
Agent.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Furnace Fire Bars.
We THOMAS DAVIES and SAMUEL DAVIES of Rhostyllen Foundry Wrexham,
in the County of Denbigh, Engineers, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The object is to enable hollow fire bars to be constructed easily and cheaply
without cores, such fire bars being efficiently available for the passage of fluid
therethrough in any usual way and readily renewable when necessary.
Fire bars under our invention are cast in two parts, are recessed longitudinally,
and are adapted to fit together lengthwise so as to make joint and have a way or
passage therethrough formed by the recesses. The said combined bars are so
formed or shaped transversely as to fit into two or more recessed bearers which.
lock or retain the longitudinal halves of each bar together.
Any usual or suitable fittings are combined with the said bars to enable fluid
preferably air to pass therethrough.
DESCRIPTION OF THE DRAWINGS.
Figs. 1, 2, and 3 are perspective views illustrative of three modifications of fire
bars under our invention.
In Fig. 1 the fire bar is formed of two longitudinal recessed parts a, a', placed
together so as to have a vertical joint and held in position by fitting into a recessed
bearing b one near each end of the bars, the ends of the bars are connected to air
or fluid supply fittings in any usual way.
D

page_text: In Fig. 2 the part is recessed and the part a' flat, and the two are fitted
together to form an inclosed joint. Tongues and grooves as at a² may be used to
make a closer joint.
In Fig. 3 the part a is recessed or grooved so as to fit on a ribbed bottom
piece a¹ and inclose a way or channel.
The back bearer may be sufficiently wide to carry a bridge in addition to
the bars.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
First. Fire bars for furnaces constructed in two longitudinal parts fitting
together so as to make joint, and recessed so as to have a passage therethrough in
combination with transverse recessed bearings into the recesses of which the
compound bars fit and are locked or retained together.
Second. The improvements in fire bars substantially as herein set forth.
Dated th
1005
J. JOHNSON,
Patent Office, 4 Clayton Square, Liverpool, Agent.