IMPROVEMENTS IN METALLIC PLASTERING SURFACES
Year: 1883

page_text: LETTERS PATENT to Alexander Melville Clark, of the firm of A M and
W Clark of 53 Chancery Lane in the County of Middlesex Fellow of the
Institute of Patent Agents for an Invention of IMPROVEMENTS IN METALLIC
PLASTERING SURFACES communicated to him from abroad by James Stanley
of New York City in the County and State of New York, United States of
America Builder
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PROVISIONAL SPECIFICATION left by the said Alexander Melville Clark at
the Office of the Commissioners of Patents on the 20th December 1883.
ALEXANDER MELVILLE CLARK of the firm of A. M. and W. Clark of 53 Chancery
Lane in the County of Middlesex, Fellow of the Institute of Patent Agents
* IMPROVEMENTS IN METALLIC PLASTERING SURFACES." [Communicated to him
from abroad by James Stanley of New York City in the County and State of
New York, United States of America Builder]
This Invention relates to the use of wire cloth as a plastering surface in
buildings in place of laths, and consists principally in corrugating, or forming ribs,
in the wire cloth, whereby the same is stiffened and made firmer, and whereby it
may be secured to the joists by means of common staples or other cheap and
quickly and easily applied fastenings.
The staples are passed through the wire cloth in the corrugations and driven into
the joists or studding; and the wire cloth is by preference placed upon the joist or
studding in such manner that the corrugations run transversely to the joist.
By corrugating the wire cloth the staples hold the same in place with perfect
security, and the whole body of the wire cloth is stiffened. The wire cloth is for
the most part set out away from the edges of the joist and studding by the ribs or
corrugations so that the plaster when applied will key around and through the rib ;
or corrugations and close to and around the edges of the joists, thus perfectly
sealing the same at the edges so that fire cannot pass from joist to joist.

page_text: Besides these advantages the wire cloth surface is strong and durable and
enables the plaster to be put on without showing any impression of the joists or
studding and is sufficiently rigid to prevent all sagging of the wall or ceiling.
In some cases if found necessary the wire cloth may be strengthened at the ribs
or corrugations by increasing the number of strands of wire at these points or a rod 5
might be used for that purpose woven in with the strands of the cloth or held in
place along the outside of the corrugation by the staples.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alexander Melville Clark in the Patent Office on the 19th May
1884.
.TI
ALEXANDER MELVILLE CLARK of the firm of A. M and W Clark of 58, Chancery
Lane in the County of Middlesex, Fellow of the Institute of Patent Agents
"IMPROVEMENTS IN METALLIC PLASTERING SURFACES." A communication to me
from abroad by James Stanley of New York City in the County and State of
New York, United States of America, Builder
This invention relates to the use of wire cloth as a plastering surface in buildings
in place of laths, and consists principally in corrugating, or forming ribs, in the
wire cloth, whereby the same is stiffened and made firmer, and whereby it may be
secured to the joists and studding by means of common staples or other cheap and
quickly and easily applied fastenings
Figure 1 of the accompanying drawings is a sectional elevation of a plastered
wall or ceiling formed in accordance with the invention taken on the line x x of
Figure 2. Figure 2 is a front elevation showing the wire cloth partly plastered.
Figure 3 is a sectional elevation on the line y y of Figure 2; and Figure 4 is a
perspective view showing the wire cloth secured to the joist or studding.
L
AA represent the studding or joists of a building. B represents the wire clothi
and C represents the plastering. The wire cloth B is corrugated or ribbed as
shown at a and is attached to the joists or studding A by the staples 66 passed
through the wire cloth in the corrugations and driven into the joists or studding;
and the wire cloth is by preference placed upon the joist or studding in such
manner that the corrugations a run transversely to the joist and studding as shown
in the drawings.
By corrugating the wire cloth B it will be seen that the staples b, which are
cheap and quickly and easily applied, hold the wire cloth in place with perfect
security. It will also be seen that the whole body of the wire cloth is stiffened by
forming the corrugations in it, and that it is for the most part set out away from
the edges of the joist and studding as shown at cc by the ribs or corrugations, so
that the plaster when applied will key around and through the ribs or corrugations
and close to and around the edges of the joists and studding as shewn at d d

page_text: Figure 3, thus perfectly sealing the same at the edges so that fire cannot pass from
joist to joist.
.
Besides these advantages the wire cloth surface is strong and durable and enables
the plaster to be put on without showing any impression of the joists or studding
and is sufficiently rigid to prevent all sagging of the wall or ceiling.
In some cases if found necessary the wire cloth may be strengthened at the ribs
or corrugations by increasing the number of strands of wire at these points, or a
rod might be used for that purpose woven in with the strands of the cloth or held
in place along the outside of the corrugation by the staples b.
Having described the nature of the said Invention and the manner of performing
the same, I declare that what I claim as the Invention to be protected by the
bereinbefore in part recited Letters Patent is :-
1 A metallic plastering surface consisting of the wire cloth B corrugated or
ribbed, substantially as and for the purposes described.
2nd The wire cloth B ribbed or corrugated as shown at a and attached to the
joists or studding A by staples b or other fastenings, the ribs a being arranged
transversely to the joists or studding, substantially as described.
In witness whereof I the said Alexander Melville Clark have hereunto set
my hand and seal this nineteenth day of May A.D. 1884.
A M CLARK (1.8)