IMPROVEMENTS IN THE METHOD OF FIXING IRON LATIIS AND SLATES TO IRON ROOFS
Year: 1886

page_text: I SAMUEL WORSNOP of number 4 Victoria Place Camp Road Leeds in the County
of York carrying on business as a Slate Merchant at number 250 Whitehall Road
in Leeds aforesaid under the style of "Watson and Worsnop " do hereby declare the
nature of my invention for IMPROVEMENTS IN THE METHOD OF FIXING IRON LATIIS
AND SLATES TO IRON ROOFS to be as follows:-
The invention consists in the fixing of iron laths and slates to Iron Roofs by
means of pieces of angle iron fixed to the principals with rivets or bolts or by pieces
of inch bar iron.
I propose to secure to the iron principals or bindings, pieces of angle iron
(hereinafter referred to as "angle iron stays") or pieces of square iron bar at
distances to suit the sizes of the slates which may be required-the length of each
angle iron stay or square iron bar to be equal to the width of the top face of the
principal or binding. The angle iron stays or pieces of square iron bar shall be
so fixed that the full width of one of the outsides of such angle iron stay or piece
of square iron bar shall face down the roof towards the eaves.
The iron laths traversing the roof at right angles to the iron principals or
bindings shall be made of angle iron and secured with bolts to the angle iron stays
or square iron bars in such a manner that the top side of the iron laths shall present
the full width of one outer side thereof, and the other outer side shall face up the
roof to the ridge.
The slates are to be fixed to the iron laths with two metal nails or pins passing
down the top side of such laths, and the end of each nail turned under the sharp
edge thereof one nail on each side of the slate and as near the centre from end to
end as may be after allowing the slates proper lap; and the top end of each slate
shall rest on the next lath above the one to which such slate is secured.
The ends of the laths resting on gable walls shall be bolted to a piece of angle
iron fixed at the extreme end of such laths and resting on the walls. If the bottom
lath extends over the gable wall the same shall be made of wood and screwed to
the angle iron stays or pieces of square iron bar with iron screws and such lath
bedded and covered with lime, and the first two courses of slates shall be nailed to
the wood lath so screwed to the angle iron stays or pieces of square iron bar as
aforesaid.

page_text: Improvements in the Method of Fixing Iron Laths and Slates
to Iron Roofs.
I SAMUEL WORSNOP of number 4 Victoria Place Camp Road Leeds in the County
of York carrying on business as a Slate Merchant at number 25 Whitehall Road
in Leeds aforesaid under the style of Watson & Worsnop do hereby declare the
nature of my invention for FIXING IRON LATHS AND SLATES TO IRON ROOFS and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
The invention consists in the fixing of laths and slates to Iron Roofs by means of
angle iron fixed to the principals or bindings with rivets or bolts or by pieces of
square iron bar fixed to the principals or bindings in the same manner--I propose
to secure to the iron principals or bindings common to all ordinary iron roofs pieces
of angle iron (hereinafter referred to as "angle iron stays") as drawn upon the plau
attached bereto and marked "B" in Figure or pieces of square iron bar as drawn
upon the said plan and marked "D" in Figure II with ordinary iron bolts or rivets
at distances to suit the sizes of the slates required to be used-The length of each
angle iron stay or piece of square iron bar shall be equal to the width of the top
face of the principal or binding and fixed thereto in such a manner that the full
width of one of the outsides of the angle iron stay or piece of square iron bar shall
face down the roof towards the eaves-The iron laths traversing the roof at right
angles to the principals or bindings shall be made of ordinary angle iron of such
strength as may be required and secured with iron bolts to the angle iron stays or
pieces of square iron bar in such a manner that the top side of such iron lath shall
present the full width of one outer side thereof and the other outer side shall face
up the roof towards the ridge.
By fixing the laths in the manner before described a broad flat surface or upper
side is presented upon which the top of cach slate can rest securely while the thin
end of the lath pointing downwards forms a sharp turn round which the nails,
passing through the slates as hereinafter described, are driven, thus materially
strengthening and increasing the resisting power of such nail and by this means
rendering the slate almost practically immoveable.
The slates shall be fixed to the iron laths traversing the roof as aforesaid with
two metal nails or pins passing down the top side of the lath and the end of such
nail or pin turned under the sharp edge of the lath and hammered tight to the
inner side thereof-One nail or pin shall pass through each side of the slate as
near the centre from end to end as may be after allowing the proper lap as shewn
upon the said plan and marked "C" in figures 1 and 2 and the top end of
each whole slate shall rest on the next lath above the one to which such slate
is secured.
Slates when fixed as above described are very firm secure and difficult to remove,
quite as much so as when nailed to an ordinary wooden roof and will resist a greater
pressure of wind than those fixed to iron roofs by any other method at present
DLE

page_text: In addition to this the slates can easily be repaired when necessary in the same
manner as originally fixed by reason of the fact that no clips or straps are required
or used.
The ends of all laths resting on gable walls shall be securely bolted to a piece of
angle iron fixed at the extreme end of such laths and resting on the gable walls.
Whenever the bottom lath projects over the walls at the caves it may be made
of wood and secured to the angle iron stays or pieces of square iron bar so fixed to
the iron principals or bindings as aforesaid, by means of ordinary iron screws and
such laths shall be embedded in and covered with lime, and the first two courses of
slates shall be then nailed to the wood lath so screwed to the angle iron stays or
pieces of square iron bar as aforesaid.
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 method of fixing iron laths to the iron principals or bindings so that the
one outer side (or top side) thereof presents a broad flat surface upon which the
tops of the slates can rest while the other outer side faces up towards the ridge
presenting a broad flat surface for the nails securing the slates to rest against and
at the same time leaves the thin or pointed edge of the angle iron lath pointing
downwards from the roof, thus providing a sharp turn round which the nails or
pins can be driven and effectually secured.
2. The method of fixing the slates to the iron laths substantially as hereinbefore
described so that the same are rendered fast and secure without the use of lime or
cement pointing or other material usually employed for this purpose.
Dated this twenty fourth day of May 1886