Improvements in the Construction of Sheet-roofing, and in the Form of Sheets therefor.
Year: 1897

page_text: Date of Application, 25th Aug., 1897
Complete Specification Left 25th May 1808 -Accented 9th July 1898
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Sheet-roofing, and in the
Form of Sheets therefor.
We, NOWELL SHERSON, of No. 64, The Avenue, Ealing, in the County of
Middlesex, Manufacturer, HENRY CRISP, of No. 15, Broad Hinton Road, Clapham,
in the County of Surrey, Manufacturer, and ALFRED MOORE, of Nos. 352
to 364, Euston Road, in the County of Middlesex, Manufacturer, do hereby
declare the nature of this invention to be as follows:
This invention has reference to improvements in the construction of, and form
of sheets for, what is known as sheet-roofing, that is, sheets of suitable material,
generally zinc, take the place of slates or tiles, chiefly for flat roofs.
Hitherto the side edges of such sheets have been simply turned or bent up at
an angle, or to a curve, corresponding to that of the wood-roll, rafter or ridge on
the roof against which they abut and to which they are secured or held in position
by means of separate inverted trough-shaped pieces called roll-caps which cover
the top of the wood-roll and extend downward on either side, overlapping the
turned-up edges of the sheets. There are several modifications known but all
possess the drawbacks of separate roll-caps and simple overlapping junctions,
which latter, however close they may be, permit of end movement of the sheets
and wind to enter beneath, which exerts an upward strain upon the whole roof
tending to lift it.
The object of the present invention is to obviate the aforesaid disadvantages,
and this we effect by making the roll-cap and roofing sheet in one; providing
lateral clips at intervals behind the turned-up side edges of the sheets, and forming.
the latter with corresponding notches to engage therein.
According to our invention each sheet has one of its side edges turned or bent up at
or about a double right angle, but the other edge, instead of being similarly
shaped, is extended and formed into a complete roll-cap. Angle-clips of sub-
stantially Z shape in cross section are provided at intervals to overlap and
engage in notches formed on the turned up edge of the adjacent sheet, at the
junction of the two, the roll-cap is dressed or finished preferably into a round nosed
bead, curling over the edge of the sheet but it may be a lap or a tongue and
groove style of joint if desired.
1
August 1907
PHILLIPS & LEIGH,
Agents for the Applicants.

page_text: Improvements in the Construction of Sheet-roofing, and in the
Form of Sheets therefor.
We, NOWELL SHERSON, of No. 64, The Avenue, Ealing, in the County of
Middlesex, Manufacturer, HENRY CRISP, of No. 15, Broad Hinton Road, Clapham,
in the County of Surrey, Manufacturer, and ALFRED MOORE, of Nos. 352
to 364, Euston Road, in the County of Middlesex, Manufacturer, 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:
-
This invention has reference to improvements in the construction of and form
of sheets for what is known as sheet roofing, that is large sheets of suitable material,
generally zinc, take the place of slates or tiles, chiefly for flat roofs.
Hitherto the side edges of such sheets have been simply turned or bent up at
or angle or to a curve corresponding to that of the wood-roll, rafter or ridge on
the roof against which they abut and to which they are secured or held in position
by means of separate inverted trough-shaped pieces called roll-caps which cover
the top of the wood-roll and extend downward on either side overlapping the
turned-up edges of the sheets. There are several modifications known but all
possess the drawbacks of separate roll-caps and simple overlapping junctions,
which latter, however close they may be, permit of end movement of the sheets
and wind to penetrate beneath, which is dangerous as it exerts an upward strain
upon the whole roof tending to lift it.
The object of the present invention is to obviate the aforesaid disadvantages,
and this we effect by making the roll-cap and roofing sheet in one piece, providing
lateral clips at intervals behind the turned-up side edges of the sheets, and forming
the latter with corresponding notches to engage therein.
The following is a description of our invention reference being made to the
accompanying drawings illustrating the application of the same, and forming part
of this specification, and in which:
=
Figure 1 is a perspective view of a portion of a roof covered in accordance with
this invention, shewing one roll-cap raised previous to trimming over and the
other as it appears after the roll-cap is formed.
Figure 2 is a central section through a roof covered in accordance with this
invention.
Like letters of reference denote different views of the same parts: a is the roofing
sheet, is the bent-up side or edge thereof, c is the other side of the same sheet,
which is formed into the roll-cap d, e are the Z-shaped angle clips, f are the
notches or spaces to receive the clips e, g is the turned-over edge of an adjacent
sheet.
According to our invention, each roofing sheet a has one of its side edges b
turned or bent up at or about a double right angle, but the other edge or side c
instead of being similarly shaped as usual is extended and formed into a complete
roll-cap d. Angle clips e of substantially Z shape in cross-section are provided at
intervals to overlap and engage in notches f formed on the turned-over edges g
of the adjacent sheet. At the junction of the two, the roll-cap d is dressed or
finished preferably into a round-nosed bead curling over the edge of the sheet as
shewn, but it may be a lap or a tongue-and-groove type of joint if desired.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
:-
1. A roll-cap and roofing sheet in one piece, as described and set forth.
2. A roofing sheet with one side or edge formed into or adapted to constitute a
roll-cap, as described and set forth.
3. A roofing sheet with one of its side-edges formed into a roll-cap and its
opposite side-edge turned up at an angle with the plane of the sheet, substantially
as described and illustrated in the accompanying drawings.
4. A roofing sheet with one of its side-edges formed into a roll-cap and its
opposite side-edge doubly bent or formed at an angle with the plane of the sheet
and having notches or openings formed at intervals therein, substantially as
described and illustrated in the accompanying drawings.
5. The combination with the framework or supporting structure of the roof,
of roofing sheets, and angle clips formed, combined and secured substantially as
described and illustrated in the accompanying drawings.
PHILLIPS & LEIGH,
No. 22, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.