An Improved Chequer Brick for Kiln Bottoms.
Year: 1899

page_text: An Improved Chequer Brick for Kiln Bottoms.
We, JOSEPH PLACE & SONS, LIMITED, of Darwen, in the County of Lancaster.
Sanitary Engineers, and WILLIAM HENRY PLACE, of Ashleigh, Darwen aforesaid,
Gentleman, do hereby declare the nature of this invention to be as follows:-
The chequer bricks hitherto employed for kiln bottoms have taken the form of
channeled tiles set on edge, with the side ribs thereof engaging or resting upon
the supporting walls. Chequer bricks of this description have been found
objectionable and the object of our invention is to provide a form of brick which
will prevent lodgment of dirt or rubbish on the supporting walls, and also
prevent lateral movement of said supporting walls owing to the expansion and
contraction thereof, which necessarily takes place during the varying stages
in the operation of burning.
Our improved chequer brick consists of a central rib of convenient thickness
extending across the supporting walls and having at each end a wedge shaped
lug projecting for the required distance on each side thereof. The lugs extend,
approximately, the whole depth of the brick, the broad end of the wedge
being at the bottom where the brick comes into contact with the supporting
walls, thus giving a large bearing surface. The thin side of the wedge shaped
lugs are flush with the upper side of the central rib, and whilst there is less
solid presented on the upper or floor side of the chequer brick, its strength is
largely increased and this is effected with less obstruction to the draught than
is presented by the old form.
The small portion of the central rib projecting below the wedge shaped lugs
is of such a width as to engage the inner sides of the supporting walls, thus
ticing them together and preventing lateral movement thereof owing to expansion
and contraction.
An Improved Chequer Brick for Kiln Bottoms.
We, JOSEPH PLACE AND SONS, LIMITED, of Darwen, in the County of Lancaster,
Sanitary Engineers, and WILLIAM HENRY PLACE, of Ashleigh, Darwen aforesaid,
Gentleman, do hereby declare the nature of this invention and in what manner
Price 8d1

page_text: the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
1
The chequer bricks hitherto employed for kiln bottoms have taken the form of
channeled tiles set on edge with the side ribs thereof engaging or resting upon
the supporting walls. Chequer bricks of this description have been found
objectionable and the object of our invention is to provide a form of brick which
will prevent lodgment of dirt or rubbish on the supporting walls, and also
prevent lateral movement of said supporting walls owing to the expansion and
contraction thereof, which necessarily takes place during the varying stages
in the operation of burning.
Our improved chequer brick consists of a central rib of convenient thickness
extending across the supporting walls and having at each end a wedge shaped
lug projecting for the required distance on each side thereof. The lugs extend,
approximately, the whole depth of the brick, the broad end of the wedge
being at the bottom where the brick comes into contact with the supporting
walls, thus giving a large bearing surface. The thin ends of the wedge shaped
lugs are flush with the upper side of the central rib, and whilst there is less
solid presented on the upper or floor side of the chequer brick, its strength is
largely increased and this is effected with less obstruction to the draught than
is presented by the old form.
The small portion of the central rib projecting below the wedge shaped lugs
is of such a width as to engage the inner sides of the supporting walls, thus
tieing them together and preventing lateral movement thereof owing to expansion
and contraction.
In the accompanying drawings:-
Fig. 1, is longitudinal elevation of our improved chequer brick;
Fig. 2, is plan view thereof, and
Fig. 3, is cross section taken on line A, B, of Fig. 1.
Referring to the drawings our improved chequer brick comprises a central
longitudinal rib a, of convenient or suitable width, having each end made a
little thicker or wider than the central rib to form lugs b projecting from each
side thereof. The said lugs b extend approximately the whole depth of the brick
and are wedge shaped, the broad end of the wedge being at the bottom, where the
brick comes into contact with and fits on the supporting walls c, so as to give a
large bearing surface. The thin ends of the wedge shaped lugs bare flush with
the upper side of the central rib a whose lower side is made to project below the
wedge shaped lugs so as to engage the inner or opposing sides of the supporting
walls to tie them together and prevent lateral movement under conditions of
expansion and contraction during the varying stages in the operation of burning.
In constructing chequer bricks as aforesaid, less solid is presented on the upper
or floor side of the bricks and consequently there is less obstruction to the draught
than in the old construction of chequer brick and dirt or rubbish cannot lodge
on the supporting walls. The said construction of bricks also considerably
increases their strength.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that
what we claim is:-
(1) The improved construction of chequer brick for kiln bottoms substantially
is and for the
purposes
herein set forth.
2
апи лог He purposes mere set for CH.
Dated this 10th day of August 1900.
TASKER & CROSSLEY,
Agents for Applicants.
Patent Agents, Halifax.