Improved Means for Fixing Corrugated Sheets of Metal to Roofs and the like.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improved Means for Fixing Corrugated Sheets of Metal to Roofs and
the like.
I, CHARLES THOMAS, Ironworks Manager, of Barry Hill, Bitton, Gloucestershire,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to prevent leakage through the bolt holes.
For this purpose metal saddles are introduced between the purlins and the corru-
gated sheets and each saddle has formed on it a raised cone through the centre
of which the bolt passes. A concave washer is introduced between the nut and
the corrugated sheet and when the nut is screwed down the area of the corru-
gated sheet covered by the washer is raised by the pressure between the washer
and the cone on the saddle so forming a raised convex boss on the upper side
of the corrugated sheet which fits closely into the concave washer thereby pre-
venting leakage through the bolt hole."
The saddles also prevent the interception by the purlins of the drops of con-
densation water which flow down the underside of the corrugated sheets.
Doted this 15th day of December 1899
CARPMAEL & Co.,
Agents for the Applicant.
Improved Means for Fixing Corrugated Sheets of Metal to Roofs and
the like.
I, CHARLES THOMAS, Ironworks Manager, of Barry Hill, Bitton, Gloucestershire,
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:―
The object of this invention is to prevent leakage through the bolt holes.
For this purpose metal saddles are introduced between the purlins and the corru-
gated sheets and each saddle has formed on it a raised cone through the centre
of which the bolt passes. A concave washer is introduced between the nut and
the corrugated sheet and when the nut is screwed down the area of the corru-
gated sheet covered by the washer is raised by the pressure between the washer
and the cone on the saddle so forming a raised convex boss on the upper side
of the corrugated sheet which fits closely into the concave washer thereby pre-
venting leakage through the bolt hole.
The saddles also prevent the interception by the purlins of the drops of con-
densation water which flow down the underside of the corrugated sheets for the

page_text: saddles by raising the sheets from off the purlin leave spaces for the water to
pass freely.
Figure 1 is an end view of a corrugated sheet fixed according to this invention
on a wooden purlin, and Figure 2 is a section on the line 2-2 Figure 1.
Figures 3 and 4 are similar views of a sheet fixed to a T iron purlin.
Figures 5 and 6 are similar views of a sheet fixed to an angle iron purlin, and
Figures 7 and 8 are similar views of a sheet fixed to a T bar purlin."
a is the purlin, 6 the metal saddle piece fixed to it, c the raised cone on the
saddle piece, d the corrugated sheet, the washer, f the bolt passing through the
cone, and g the nut on it.
h is the space between purlin and the corrugated sheet which allows the con-
densation water to pass freely without interruption.
In Figures 1 and 2 the saddle piece b is fixed to the purlin a by a screw k,
whilst in Figures 3 to 8 the bolt f has a hook f¹ on it engaging with the purlin,
and in Figures 3 and 4, and 7 and 8, the saddle piece b also has a hook bi at its
end.
By suitably modifying the shape of the parts the invention may be used with
any form of purlin.
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. The saddle piece with a cone on it substantially as described.
2. Means for fixing corrugated sheets of metal substantially as described and
illustrated in the drawings.