IMPROVEMENTS IN COVERING ROOFS AND FLATS OF BUILDINGS WITH SLATE
Year: 1843

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
NORTH, of Stangate, Lambeth, in the County of Surrey, Slater, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Fifth day of October, in the seventh year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William North, Her especial licence, full power, sole privilege and authority,
that I, the said William North, my exors, admors, and assigns, or such others
as I, the said William North, my exors, adñiors, or assigns, should at any time
agree with, and no others, from time to time and at all times hereafter, during
the term of years therein expressed, should and lawfully might make, use,
exercise, and vend, within England, Wales, and the Town of Berwick-upon-
Tweed, my Invention of "IMPROVEMENTS IN COVERING ROOFS AND FLATS OF
BUILDINGS WITH SLATE;" in which said Letters Patent is contained a proviso
that I, the said William North, shall cause a particular description of the
nature of my said Invention, and in what manner the same is to be per-
formed, to be inrolled in Her said Majesty's High Court of Chancery within
six calendar months next and immediately after the date of the said in part
recited Letters Patent, as in and by the same, reference being thereunto had,
will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
William North, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are fully deseribed and
ascertained in and by the following statement thereof, reference being had to
the Drawing hereunto annexed, and to the figures and letters marked thereon,
that is to say :-
My Invention consists of using battens of slate in combination with slate
covers of roof and flats of buildings, whereby the slabs of slate used in cover-
ing roofs and flats of buildings are not fixed to the rafters or joists, thus
preventing the joints of the slate becoming defective from the warping or
vibration of such covered roofs or flats. And in order that my Invention may
be most fully understood and readily carried into effect, I will proceed to
describe the Drawing hereunto annexed, in the various Figures of which the
same letters are used to indicate similar parts.
DESCRIPTION OF THE DRAWING.
Figure 1 is part of a roof or Hat of a building covered with slate according
to my Invention. Figure 2 is a section thereof taken in the direction of the
length of the rafter or joist. Figure 3 is an under side view. Figure 4 is a
.transverse section thereof.
a, a, are the rafters or joists. b, b, are the battens of slate, which are
received into notches or rececesses formed in the rafters or joists. c, c, are
the slabs of slate for covering a roof or flat, the ends of which rest on the
.battens as shown, and the ends are bedded in putty. d, d, are the fillets of
slate which cover the joints formed by the sides of the slate butting together.
e, e, are screws and nuts which combine the fillets to the slabs, and also the
slabs and fillets to. the slate battens, by which it will be seen that the whole
covering of slate is bound and fixed together without being fixed to the rafters
or joists. In some cases I place the fillets d underneath the joints of the
slabs, when it is necessary to increase the thickness of the battens 6 to obtain
the required strength, as is shown at Figure 5.
Having thus described my Invention, I would wish it to be understood that
what I claim is, the combining the use of slate battens with slate coverings for
roofs and flats of buildings, as herein described.
In witness whereof, I, the said William North, have hereunto set my
hand and seal, this Second day of April, in the year of our Lord One
thousand eight hundred and forty-four.
WILLIAM (L.S.) NORTH.

page_text: AND BE IT REMEMBERED, that on the Second day of April, in the
year of our Lord 1844, the aforesaid William North came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Enrolled the Fourth day of April, in the year of our Lord One thousand
eight hundred and forty-four.