AN IMPROVED METHOD OR SYSTEM OF SECURING SHEETS OF ZINC, OR. OTHER MATERIAL FOR ROOFING PURPOSES, WHEREBY HOLES IN THE ZINC AND EXTERNAL FASTENINGS ARE DISPENSED WITH
Year: 1884

page_text: I, THOMAS WILLIAM HELLIWELL of the Royal Horticultural Works, Brighouse,
Yorkshire, Horticultural Engineer do hereby declare the nature of my Invention
for "AN IMPROVED METHOD OR SYSTEM OF SECURING SHEETS OF ZINC, OR. OTHER
MATERIAL FOR ROOFING PURPOSES, WHEREBY HOLES IN THE ZINC AND EXTERNAL
FASTENINGS ARE DISPENSED WITH," to be as follows:-
This Invention has reference to the means to be employed in covering the roofs
and sides of buildings with sheets of zinc or other material.
My Improvements therein consisting in the method or system of securing such
materials in position, whilst at the same time making roofs, and sides of buildings
water tight.
In order to carry out my Invention the structure intended to be covered is
suitably prepared and made ready for receiving the coverings which consist of
sheets of zinc or other material having three of their sides turned upwards and one
downwards. The said sheets are placed side by side upon the structure, a space of
about one inch or so been left between their vertical edges, such space being filled
up by bars of wood, or other material, the said turned up edges abutting against
the said bars.
At suitable distances apart, spaces are left in these vertical bars, the said spaces
being filled in by pieces of wood or other material which are secured to a zinc or
other metal caps, such caps having flanges on their bottom edges. Another cap or
hollow bar the length of the zinc sheet is employed fitting onto and covering the
vertical wood bar and the caps, the said hollow bar also having turned up flanges
which flanges fit underneath the flanges of the cap, and also rest upon the edges of
two sheets of zinc in such manner that when a screw or bolt enters through the
roof from the underside and through the wood attached to the cap, the flanges
thereof are drawn against the flanges of the hollow bar, thereby pressing or forcing
the sheets against the upper surface of the roofing consequently holding the said
sheets firmly in position, absolutely preventing their removal; at the same time
making the covering water tight.
The above description refers only to the method of securing together the vertical
edges of the sheets, my Improvements also have reference to the means or method
of covering the meeting ends or joints of the vertical bars, and for this purpose
I cut the ends of the hollow bar, and open or turn them outward whereby the
admission of water is prevented.

page_text: An Improved Method or System of Securing Sheets of Zinc or
other Material for Roofing Purposes, whereby Holes in the
I, THOMAS WILLIAM HELLIWELL of the Royal Horticultural Works, Brighouse,
Yorkshire Horticultural Engineer, do hereby declare the nature of my invention
for "AN IMPROVED METHOD OR SYSTEM OF SECURING SHEETS OF ZINC, OR OTHER
MATERIAL FOR ROOFING PURPOSES, WHEREBY HOLES IN THE ZINC AND EXTERNAL
FASTENINGS ARE DISPENSED WITH" and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
This invention has reference to the means to be employed in covering the roofs
and sides of buildings with sheets of zinc or other like material.
My improvements therein consist in the method or system of securing such
materials in position, whilst at the same time making roofs and sides of buildings
water tight.
Such being the nature and object of my invention I will now proceed to describe
the same more fully and for that purpose make reference to the accompanying
Sheet of drawings which illustrate same. Fig 1 is a perspective view of a wood
structure covered with sheets of zinc, and which are made secure thereon by means
of my improvements, and Fig 2 is section of same. A are wood boards covered by
sheets of zinc B having three of their vertical edges turned up as shewn at C and
one edge turned down.
The said sheets are placed upon the structure side by side, leaving a space of
about one inch between their turned up edges, such space being filled in by a bar
of wood, or other material D, so that the turned up edges of the sheets shall abutt
against the wood bars. At suitable distances apart along the wood bars I fix by
screws or other means metal caps E having flanges on their bottom ends projecting
outward, but which do not touch the upper surface of the sheets of zinc.
Another cap or hollow bar F made the full length of the zinc sheets is employed
such hollow bar having flanges on its lower end projecting inwards, so that when
inserted in its place which is done by sliding it into position end wise the flanges
thereof fit underneath the flanges of the cap E but rest upon the zinc sheets, so that
when the screw or bolt G is passed through the roof from the underside and into
the wood bar attached to the cap that the flanges thereof are drawn down against
the flanges of the hollow bar, thereby forcing those flanges against the metal sheets
and pressing them against the upper surface of the roofing, consequently holding
the said sheets firmly in position, and absolutely preventing their removal, at the
same time making the covering water tight. Instead of the screws G passing from
the underside of the structure to connect the wood bar to the wood covering A the
screws a which secure the cap E to the bar may pass right through and into the
boards A.
The above description refers only to the method of securing together the vertical
edges of the sheets.

page_text: My improvements also have reference to the means or method of covering the
meeting ends or joints of the vertical bars, and for this purpose I cut the ends of
the hollow bar, and open or turn them outward as shewn at H in Fig 3, and after
the hollow bar is put in its place the end H is turned down and made secure by
screw or nail as shewn at Fig 4 whereby the terminus of a bar is "finished" and
the admission of water prevented.
"
In Fig 5 sheet 2 I have shewn how the wood bar and cap are covered at the
ridge," in this case the ends of the hollow bar F are opened out as shewn at b in
Fig 6 the parts b being placed behind and covered by the capping H whereby the
hollow bar is held in position and the admission of water also prevented.
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
Firstly The employment of the flanged cap E in combination with the bar D
for the purpose of securing the turned up edges of the metal sheets, substantially as
set forth.
"
Secondly-The combination of the flanged cap E with the flanged hollow bar F
in such manner that when the bar D is screwed to the structure, that the flanges of
the hollow bar shall be forced upon the metal sheets, substantially as herein shewn
and described.
Thirdly-In combination with the cap E and hollow bar F the means herein
described and shewn in Figs 4 and 5 for finishing the ends of the said bars F.
Dated this 29th day of January 1885.
TASKER & CROSSLEY,
Patent Agents,
Commercial Street, Halifax,
Agents for the Applicant.