Improvements in Fire Proof Floors.
Year: 1888

page_text: Date of Application, 1st Dec., 1888
Complete Specification Left, 30th Aug., 1889-Accepted, 5th Oct., 1889
Improvements in Fire Proof Floors.
I, WILLIAM LINDSAY of Eversley 73 Mount Park Ealing in the County of
Middlesex Engineer do hereby declare the nature of this invention to be as
follows:
According to this invention the floor is made of bricks whose length is equal to
half the distance between the walls or other supports which carry the floor. Every
other course consists of two whole bricks and the remaining courses of a whole brick
at the middle and a half brick at each side so that the courses break joint. The
faces of the bricks where they rest against each other are made in such a form that
they interlock the one with the other.
The bricks are preferably grouted or otherwise cemented together.
COMPLETE SPECIFICATION.
Improvements in Fire Proof Floors.
I, WILLIAM LINDSAY of Eversley 73 Mount Park, Ealing, in the County of
Middlesex, Engineer, 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 :-
According to this invention the floor is made of bricks whose length is equal to
half the distance between the walls or other supports which carry the floor. Every
other course consists of two whole bricks and the remaining courses of a whole
brick at the middle and a half brick at each side so that the courses break joint. The
faces of the bricks where they rest against each other are made in such a form that
they interlock the one with the other.
The bricks are preferably grouted or otherwise cemented together.
In order that my said invention may be more fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWNIGS.
Figure 1 is a plan showing the bricks in position.
Figure 2 is a longitudinal section showing the complete floor.
Figure 3 is a transverse section of the brick I prefer to employ.
A A are iron girders which support the ends of the bricks B B as shown in
Figure 2.
The method of laying the bricks is shown in Figure 1, every other course consisting
of two whole bricks whilst the remaining courses consist of whole brick at the
middle and a half brick at each side.
C(Figure 3) is a projection which enters into the recess D of the next brick.
EE at the top and bottom of the bricks are dove-tailed recesses to receive the
material forming the floor and ceiling.
In Figure 2 F is plaster and G concrete the latter supports the beams H which
carry the wooden floor J.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A fireproof floor made of bricks whose length is equal to half the distance

page_text: between the walls or other supports which carry the floor and so laid that every other
course consists of two whole bricks and the remaining courses of a whole brick at
the middle and a half brick at each side substantially as described.
2. Fireproof floors substantially as described and shown in the drawings.
Dated this 28th day of August 1880
WILLIAM LINDSAY.