Year: 1889

page_text: I LUIGI BRENTINI of 84 High Holborn, in the County of Middlesex, Confectioner
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:-
My Invention relates to improvements in roofing tiles; and has for its object to
combine lightness with strength and render the roof water-tight without the use of
mortar and which will admit of broken tiles being easily replaced without disturbing.
the remainder. With this object, the tiles are so constructed that when laid all the
tiles of the same horizontal course lie in the same plane whilst each tile of the row
overlaps at one side the edge of the one adjacent tile and is itself overlapped at the
other side by the other adjacent tile, these side joints being made by interlocking ribs
or flanges in such a way as to effectually exclude water. Moreover, the lower edges
of the tiles of one row not only overlap the upper edges of the row next below, but also
make a rain tight joint by means of interlocking flanges.
Reference is to be had to the accompanying drawings forming part of this specifica-
tion wherein I have represented two slightly different forms of tile adapted to be laid
in different ways. In Sheet 1, figure I is a cross-section of part of a roof, figure 2
is a top face view of the tiles as laid, figure 3 is an underface view of the same,
figure 4 is a section on line 1-1, and figure 5 is a section on line 22, figure 2. In
Sheet 2, figures 6, 7, and 8 are similar views to figures 1, 2, and 4, respectively.
The same letters of reference indicate like parts in all the figures.
Referring to Sheet 1, the tile is rectangular and has its body portion sunk below
the side and top edges, that is to say it is provided at one side with an upwardly
projecting flange a at the extreme edge and with a second rib b on its upper face
parallel to a and at a short distance therefrom, the intervening space forming
between them a groove c extending from top to bottom of the tile. At the opposite
side, the tile is formed with a rib d of inverted U section the bow of the U standing
above the level of the face of the tile and the groove c at the underside being adapted
to fit over the flange a of the adjacent tile and make a watertight joint therewith,

page_text: At
the body portions of the tiles in the same course lying in the same plane.
the upper edge the tile is provided with an upwardly projecting flange f. The lower
edge of the tile is formed with a downwardly projecting lip or flange g adapted to fit
over the flange of the course next below, the two flanges fand g thus interlocking and
making a rain-tight joint. The upper face of the tile is formed with a lugh to
prevent the slipping down of a tile in case of accidental disengagement from the
battens upon which it is hung by a lug i projecting downwards from its lower
face at the upper edge. The flange f extends across the groove c at the one side,
but stops short at the rib d, the tile having at this corner a re-entering angle, as
shewn in figure 2, to permit of the lateral overlapping and interlocking of the tiles of
the same course, the joint at this re-entering angle being covered, as shewn in figure 5,
by the closed lower end of the U-rib d of the tile above the upper face of the U-rib
which is thus partly covered, being notched, as at k, to receive the said closed lower
end, as shewn in figure 5. The tiles shewn in Shoet 1 are adapted to be laid with their
lateral joints in alignmont with those of the courses above and below, as shewn in
figures 2 and 3.
The tiles shewn in Sheet 2 are similar to that above described and need no special
description except in so far that the tiles of one course are adapted to break joint with
those of the course below, as shewn in figures 7 and 8, and for this purpose the body
of the tile is formed with a boss m at the centre of the lower part which is hollowed
at the underside and adapted to fit upon the ridge d of the joint below, is shewn
in figures 6, 7 and 8, the ridge d being notched on the upper surface, as at j, to
receive it, so that the joint at the re-entering angle is effectually closed.
By this construction of tiles with interlocking Hanges, rain and wind tight joints are
made without mortar and with very little overlapping or bonding of the joints, so that
a very light yet strong roof is formed, the construction and mode of laying admitting of
the easy replacement of tiles in case of breakage.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
The herein-described respective constructions of roofing tiles with flanges or ribs,
substantially as specified, so as to form interlocking lap joints at the sides, as described,
with adjacent tiles of the same course and interlocking lap joints at the top and bottom
with the tiles of the courses above and below whether the lateral joints are in alignment,
as in Sheet 1, or break joint, as in Sheet 2.
Dated this 31st day of January 1889.