Made of Bricks, Terra Cotta, Stones, or any other Materials.
Year: 1886

page_text: Date of Application, 13th May, 1886.
Complete Left, 26th Nov., 1886.
Complete Accepted, 21st Jan., 1887
Made of Bricks, Terra Cotta, Stones, or any other Materials.
I WILLIAM PARRY of No. 12 Lower Street Caelleppa Bangor, in the County of
Carnarvon, Bricklayer and Mason do hereby declare the nature of the said invention
for THE CONSTRUCTION OF FLOORS, ROOFS AND ARCHES MADE OF BRICKS, TERRA COTTA
STONES OR ANY OTHER MATERIALS to be as follows:-
Blocks of bricks, Terra Cotta, or stones, or any other building materials are
manufactured in such a way as to register with each other in the process of building
and to bind the work in such manner that it shall form a mass incapable of being
riven asunder or cracked.
The bricks or blocks are to be formed with vertical projections down or along one
side to within one fourth more or less, of the bottom edge, with grooves or recesses of
corresponding size on the opposite side, so as to fit tightly together, no cement, or
mortar will be required (unless preferred) in laying them together, but they may be
grouted after the whole of the floor or roof or arch has been laid.
The projections about one fourth more or less at the top of the bricks or blocks, are
to be formed wider by about half an inch on each side, so as to form a step, by which
means double strength will be given to the keys of each block, also they will act as
gauges or guides to keep the work evenly.
The projections and grooves may be manufactured in different forms, such as dove-
tail, wedge-shaped, fluted and reeded, spine and hollow, tongued and rebated.
A great advantage is obtained by the use of these bricks in diminishing the lateral
thrust of arched surfaces, as about two-thirds or the whole of the first brick or block
on cach side of the arched surface, will rest on the vertical support underneath, such as
wall, pier or column; the whole of the thrust or pressure therefore being entirely
vertical.

page_text: The external appearance of the work constructed with these bricks or blocks is the
same as that of ordinary work in every respect, the joints being quite vertical and
horizontal.
The bottom and top beds will be quite straight and level, and not formed with a
curve as ordinary arched surfaces, and by having the beds straight and level, it will not
be necessary to strike out centres &c and it will be more easy and less costly to execute
arched surfaces with bricks or blocks having vertical keys or projections, than with
those having horizontal projections or keys.
The bricks or blocks may be perforated or the interior made hollow.
By the adoption of this Invention, an arched surface may be constructed with great
rapidity and with much greater strength and durability and at much less cost, than by
any other method of constructing arched surfaces.
WILLIAM PARRY.

page_text: Improv
Made of Bricks, Terra Cotta, Stones, or any other Materials.
I WILLIAM PARRY of No. 12 Lower Street, Caelleppa Bangor in the County of
Carnarvon, Bricklayer and Mason 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 :-
Blocks of bricks, Terra Cotta, or stones, or any other materials are manufactured in
such a way as to register with each other in the process of building, and to bind the
work in such a manner that it shall form a mass incapable of being driven asunder
or cracked.
The bricks or blocks are to be formed with vertical projections down or along one
side to within one fourth more or less of the bottom edge, and as shown by A in all of
the Figures or Drawings corresponding grooves or recesses are formed on the
opposite side, so as to fit tightly together as shown by B in all of the figures.
No cement or mortar will be required (unless preferred) in laying them together but
they may be grouted after the whole of the floor, or roof, or arch has been made.
The projection about one fourth more or less at the top of the bricks, or blocks, are
to be formed wider by about half an inch on each side, so as to form a step, as shown
by C, Figs. 1, 2, 5, 7 & 8, by which means double strength will be given to the keys
or projection of each block; also they will act as gauges or guides to keep the
work evenly.
The projections and grooves may be manufactured in different forms, such as
dovetail as shown by dotted line D Figs. 4 and 9, also as wedge-shaped, fluted and
reeded, spine and hollow, tongued and rebated.
For constructing floors and flat roofs the blocks would be about nine inches wide,
and made hollow as shown by Fig. 9. The under-side to be formed with dovetailed
grooves as shown by E Fig. 9, so as to form a key for the plaster of the ceiling.
Fig. 9 shews the method of constructing fire-proof floors with blocks made in
accordance with this invention.
Floors, roofs and arches can be made of any width and depths with these bricks or
blocks, by doubling or repeating the rings or courses.
Fig. 1 shews the section of 4 inches wide, arch; Fig. 2 shews the section of
9" arch, and has two projections or keys; every alternative course in a 9" inch arch
would be as shown by Fig. 5 in section, and as shown by Fig. 6 in elevation, and
having a break joint in depth as shown by F figs. 5 and 6. Fig. 8 is a plan or
horizontal section of an arch 9 inches wide, and as above stated having double
projections or keys.
Fig. 3 and 7 are respectively plan and section of a 4 inches wide, arch.
A great advantage is obtained by the use of these bricks or blocks, in diminishing
the lateral thrust of arched surfaces, as about two-thirds or the whole of the first
bricks or block, on each side of the arched surface will rest on the vertical support

page_text: underneath, such as wall, piers, or columns, the whole of the thrust or pressure
therefore being entirely vertical.
The external appearance of the work constructed with these bricks or blocks, is the
same as that of the ordinary work in every respect, the joints being quite vertical and
horizontal.
The top and bottom beds will be quite straight and level and not formed with a
curve as ordinary arched surfaces, and by having the beds straight and level, it will
not be necessary to strike out centres and will be more easy and less costly to execute
arched surfaces with bricks or blocks of this invention, than with those having
horizontal projections or keys. The bricks or blocks may be perforated or the interior
made hollow.
By the adoption of this invention an arched surface may be constructed with great
rapidity, greater strength and durability, and much less cost than by any other method
of constructing arched surfaces.
Having now particularly described and ascertained the nature of my said Invention,
and in what manner the same is to be performed, I declare what I claim is
1 Arched surfaces constructed without lateral thrust.
2 Arched surfaces constructed with level beds.
3 The projections or keys, and corresponding grooves are vertical instead of