Year: 1888

page_text: Date of Application, 27th Dec., 1888
Specification Accepted, 29th Jan., 1889
1, FRIEDRICH HUNSINGER, of the City of Minden, in the Kingdom of Prussia,
German Empire, Royal Commissioner of Taxes, 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 has for its object to provide rooling tiles of such construction that
they shall more efficiently be able to prevent the ingress of wind and rain than the
tiles now in use, while at the same time, they will be cheaper I believe to manufacture
than the tiles now generally used, also cheaper to lay on the roof and more safe against
slipping off or being blown off the roof, thus preventing accidents.
Tiles according to my invention are made in two principal shapes, as shewn in fig 1
and fig. 2 of the drawings herewith. Both constructions are hexagon shaped. In fig. 1
each two opposite sides are parallel, whereas in fig. 2 the upper point d. forms a
smaller angle than the lower point y.
On the plate tile is fixed a ledge, (called by me a weather ledge) which at a. forms
an angle equal to the angle of the lower point.g.
On the under side of the tile and directly under and covered by the angle
point of the ledge a hole or impression is made by which the tile may be hung on
nails.
When the tiles are laid on a roof they are placed in such a manner that
the weather ledge lies directly against the lower edges of the two tiles directly
above. This is shewn in fig. 3 and fig. 4 the former representing tiles of regular
hexagon shape, while the latter represents tiles more pointed towards the upper
angle.
How the weather ledge prevents ingress of wind, rain, snow dust and the like is
represented in fig 5 which is a side view of two tiles. The arrow shews the course
which the wind must follow. Not only would the wind ordinarily be prevented
from entering underneath the tiles, but as it passes along it even tends to cause
a Vacuum, and consequently to draw air from between the tiles. In fig. 6 I have
endeavoured to show the direction the wind would take in the cases of ordinary files,
without weather ledge.

page_text: I am aware that some Inventors have endeavoured to prevent ingress of wind etc.
by shaping the tiles in such a manner that they grip into each other, but that merely
impedes the free passage of wind etc. without really preventing its ingress, as
illustrated by fig. 7.
The rain which penetrates into the joints formed by the weather ledge and the upper
tiles, would run along from tile to tile downwards, inasmuch as the groove formed by
the ledge L. and the rim R. continues from tile to tile. The steeper the roof the
narrower may the rim R. be, and vice versa, because what is required, is that the water
level in the groove does not extend beyond the Rim-edge.
The meeting point of the two legs forming the weather ledge, I sometimes elevate
for the purpose partly of strengthening the part and partly of blocking the small per-
pendicular groove formed by the two tiles in juxtaposition above when fixed on
a roof.
Having now particularly described and ascertained the nature of my said
invention, and in what manner "the same is to be performed, I declare that what
I claim is
1. A hexagon roofing tile having a weather ledge for the purposes and in the manner