AN IMPROVED METHOD OF AND MEANS FOR SECURING AND FIXING ON TO ROOFS TIT OR SIDES OF BUILDINGS OR OTHER STRUCTURES SHEETS OF ZINC COPPER PLAIN AND CORRUGATED METAL OR OTHER SUITABLE MATERIAL PROVISIONAL SPECIFICATION
Year: 1882

page_text: LETTERS PATENT to Thomas William Helliwell of Brighouse in the County
of York, Horticultural Engineer and Architect for an invention of AN
IMPROVED METHOD OF AND MEANS FOR SECURING AND FIXING ON TO ROOFS
TIT
OR SIDES OF
BUILDINGS OR OTHER STRUCTURES SHEETS OF ZINC
COPPER PLAIN AND CORRUGATED METAL OR OTHER SUITABLE MATERIAL
PROVISIONAL SPECIFICATION left by the said Thomas William Helliwell
at the Office of the Commissioners of Patents on the 7th March 1882.
THOMAS WILLIAM HELLIWELL of Brighouse in the County of York, Horticultural
Engineer and Architect, "AN IMPROVED METHOD OF AND MEANS FOR SECURING.
AND FIXING ONTO ROOFS, FLATS, OR SIDES OF BUILDINGS OR OTHER STRUCTURES,
SHEETS OF ZINC, COPPER, PLAIN AND CORRUGATED METAL OR OTHER SUITABLE
MATERIAL
"
This Invention consists in a new method or system of securing and fixing onto
buildings or other suitable structures or purposes sheets of zinc, copper lead, plain
and corrugated metal, felting and other suitable material My Improvements
consist in turning up the edge of each sheet intended to be fixed at about right
angles to the said sheet. I then place the turned up edges or flanges of two of such
sheets together, leaving a small space between them so as to allow for expansion
and construction and for a screw nail or bolt to pass, and over the tops of the said
flanges is placed a cap or hollow bar. I then insert a screw nail or bolt through
the top of the capping which passes down between the flanges or turned up edges
of each sheet and is screwed into the wood or iron work supporting the several
sheets. If it is desired to cover the capping with zinc or other material I place at
suitable distances apart, a narrow piece of zinc or other material underneath the
said capping of sufficient length as to be wrapped around the outside thereof by
which means the roofing is held firmly down.
By this means the sheets are easily and effectually secured, without any holes
being made in them this method of fixing also allows for the free expansion and
contraction of the parts, and they can easily be removed for repairs.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas William Helliwell in the Great Seal Patent Office on the
7th September 1882.
THOMAS WILLIAM HELLIWELL of Brighouse, in the County of York Horticultural
Engineer and Architect "AN IMPROVED METHOD OF AND MEANS FOR SECURING
AND FIXING ONTO ROOFS, FLATS OR SIDES OF BUILDINGS OR OTHER STRUCTURES,
SHEETS OF ZINC, COPPER, PLAIN AND CORRUGATED METAL OR OTHER SUITABLE
MATERIAL
"
This Invention consists in a new method or system of securing and fixing onto
buildings or other suitable structures, sheets of zinc, copper, lead plain and corrugated
metal, felting and other suitable material.
My Improvements consist in turning up the edge of each sheet intended to be
fixed, at about right angles to the said sheet. I then place the turned up edges or
flanges of two of such sheets together, leaving a small space between thein so as to
allow for expansion and contraction and for a screw, nail or bolt to pass; and over
the tops of the said flanges is placed a cap or hollow bar. I then insert a screw,
nail, or bolt into the capping which passes between the flanges or turned up edges
of each sheet and is screwed into the wood or iron work supporting the several
sheets.
In order that my Invention may be better understood, I herein give reference to
the accompanying sheet of Drawings, wherein Figs 1 and 2 are sections of the
various parts employed to carry out my Invention. A are the sheets of zinc,
copper or other material, having their edges turned up at about right angles thereto,
two of such edges being placed near together and resting upon bearers or spars B
as required. C is a cap or hollow bar which is placed over the edges of the said
sheets and is secured thereon by screws, bolts or nails as shown.
If it is desired to cover the capping C with zine or other material, narrow strips
of such material is wrapped around the capping as shewn in Fig 2.
Instead of the cap being made of wood, it may be formed of sheet metal as
illustrated in Figs 3 and 4; D are lugs or brackets to receive the end of a screw
nail or bolt. Fig 5 is length view of cap C shewing the form of lugs or brackets
and how they may be secured to the cap.
By these means the sheets are easily and effectually secured, without any holes
being made in them, this method of fixing also allows for the free expansion and
contraction of the parts and they can easily be removed for repairs.
Having now shewn and described my Invention and the means I employ for
putting it into practice, I would have it understood that I do not limit myself to
the exact details herein shewn and described as some of the parts may be varied
without departing from the main features thereof, but what I believe to be new
and desire to claim is-
Firstly. The employment of the bar or cap C when used in combination with
the turned up edges of two seperate sheets of material in the manner and for the
purpose substantially as herein shewn and described.
Secondly. The method of securing sheets of metal without penetrating them with
nails bolts or screws substantially as shewn and described
In witness whereof I the said Thomas William Helliwell have hereunto set
my hand and seal this thirty first day of August in the year of our Lord
One thousand eight hundred and eighty two.