Metal Laths for Building Purposes.
Year: 1888

page_text: Date of Application, 3rd Sept., 1888
Complete Specification Left, 3rd June, 1889-Accepted, 6th July, 1889
PROVISIONAL SPECIFICATION.
Metal Laths for Building Purposes.
I EDWARD NUNAN of 166 Fleet Street, city of London, Gentleman do hereby declare
the nature of my said invention to be as follows:-
The object of my invention is to construct or form laths or lathing for building
purposes of metal strips or lengths of such form as to afford a hold or "key" to
the mortar, plaster or cement when laid on or over them at the same time making
the work fireproof.
For this purpose I take strips or lengths of metal and bend or shape them in the
direction of their length as to form angles, curves curls or segments which will serve
to retain or act as a "key" for the mortar or plaster when fixed in the position they
are to occupy on the work, after the manner of ordinary lathing or otherwise.
Dated this 3rd day of September 1888
H. GARDNER,
166, Fleet Street, London, Agent for the said E. Nunan.
COMPLETE SPECIFICATION.
Metal Laths for Building Purposes.
I EDWARD NUNAN of 166 Fleet Street, City of London, Gentleman, do hereby
declare the nature of my said invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
<<
The object of my invention is to construct or form laths or lathing for building
purposes of metal strips or lengths of such forms as to afford a hold or key" to
the mortar plaster or cement when laid on or over them, at the same time making
the work fireproof.
For this purpose I take strips or sheets of metal and bend or otherwise shape
them in the direction of their length as to form angles curves, curls or segments
which will serve to retain or act as a "key" for the mortar or plaster when fixed in
the position they are to occupy on the work after the manner of ordinary lathing or
otherwise.
The annexed drawings show three examples of my metal laths A A A.
In Figure 1 the laths are of double curl shape, one curl B being larger than the
other, the larger forming not only a bite for mortar or cement but as a support to the
smaller curl and nailed to the joist if for a ceiling, or to end styles or panellings if
for a temporary partition.
Figure 2 represents a series of laths each having two curls B of corresponding sizes
and secured in regular order.
Figure 3 is a view of a series of laths with their edge curls corresponding, the laths
being set alternately. This kind of lathing is specially adapted as liners for walls,
partitions, for doors etc., on both sides of which laths, mortar or cement can be affixed
to constitute a fireproof screen, fixed or movable.
By this invention of metal laths, nailed in place like ordinary wood laths, ceilings
and walls of buildings can be make fireproof and will enable mortar of a very coarse
kind or a coarse cement to be used as "first plaster," the exposed surface of which can
be coated with the usual fine plaster and then whitened or be treated for paint or for
paper as desired.
The laths may be perforated, slotted, or be punctured from the inside,

page_text: 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
Edge curling or otherwise shaping strip metal for use as laths for ceilings or walls
as described and substantially of the shapes shewn on the annexed drawings.
The 3rd day of June 1880
H. GARDNER,
166, Fleet Street, London, Agent for the said E. Nunan.