Improvements in Fire Proof Partitions.
Year: 1894

page_text: Date of Application, 31st Dec., 1894
Complete Specification Left, 23rd Sept., 1895-Accepted, 26th Oct.,
1895
Improvements in Fire Proof Partitions.
I, THOMAS LEWIS BANKS, of Lindores, Branstone Road, Kew Gardens,
in the County of Surrey, do hereby declare the nature of this invention to be as
follows:-
―
According to my invention I construct fire proof partitions as follows: I bend
any description of open metallic lathing, whether made of sheet metal or wire
woven, into corrugated or angular ridge-and-furrow form, and I secure such
lathing with the corrugations or ridges and furrows running horizontally between iron
standards, preferably of a cross-shaped section, secured at suitable distances apart
in any convenient known manner to the floor and ceiling, the lathing being suitably
held within the grooves of the standards presented thereto. When using wire-wove
lathing, I prefer to secure the sheets to the standards by making some of the wires
at the ends of the sheets of greater length than the others, so that such wires can
be twined round the standards.
When using other metal lathing or perforated sheet-metal, I secure them either
by separate wires or by suitable metal clips. The metallic corrugated or ridge
and furrow lathing being thus secured, I then coat both sides thereof with plaster
to the requisite thickness, the plaster being made to penetrate through the
openings of the lathing so as to unite with the plaster on the other side, and thus
to form a solid plaster partition with the metal lathing and standards imbedded
therein.
By forming the lathing with angular ridges and furrows, these constitute horizontal
ledges on each side which effectually support the plaster, in addition to the support
derived from its solid connection through the openings of the lathing, the key thus
afforded being of an exceedingly uniform character. As before stated I prefer to
employ standards of a cross-shaped section, placed so that two opposite V shaped
grooves between the ribs thereof are presented to the faces of the plaster so as to
insure a sufficient thickness thereof, which is held by the wire binding of the
lathing upon the standards, whereby I avoid the disadvantage arising in the use
of standards presenting a flat face to the plaster and consequently offering
Do key and allowing of only a thin layer of plaster, which gives rise to cracks.
For stiffening the lathing of the partitions constructed as above described, I in
some cases pass metal rods diagonally through the meshes of the lathing, so as to
extend from the one standard to the next and secured by wedging inside the
V spaces thereof. Or I introduce horizontal rods extending longitudinally
within the bollows of the furrows or corrugations of the lathing at suitable
distances apart.
Dated this 31st day of December 1894.
ABEL & IMRAY,
Agents for the Applicant.

page_text: Improvements in Fire Frool Fa
I, THOMAS LEWIS BANKS, of Lindores Branstone Road, Kew Gardens, in the
County of Surrey, 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 :-
According to my invention I construct fire proof partitions as follows:-I bend
any description of open metallic lathing, whether made of sheet metal or wire
woven, into corrugated or angular ridge-and-furrow form, and I secure such
lathing with the corrugations or ridges and furrows running horizontally between
iron standards, preferably of a cross-shaped section secured at suitable distances
apart in any convenient known manner to the floor and ceiling, the lathing being
suitably held within the grooves of the standards presented thereto.
When using wire-wove lathing, I prefer to secure the sheets to the standards
by making some of the wires at the ends of the sheets of greater length than the others,
so that such wires can be twined round the standards. When using other metal
lathing or perforated sheet-metal, I secure them either by separate wires or by
suitable metal clips. The metallic corrugated or ridge-and-furrow lathing being
thus secured, I then coat both sides thereof with plaster to the requisite thickness,
the plaster being made to penetrate through the openings of the lathing so as to
unite with the plaster on the other side, and thus to form a solid plaster partition
with the metal lathing and standards imbedded therein.
By forming the lathing with angular ridges and furrows, these constitute
horizontal ledges on each side which effectually support the plaster, in addition to
the support derived from its solid connection through the openings of the lathing,
the key thus afforded being of an exceedingly uniform character. As before stated
I prefer to employ standards of a cross-shaped section, placed so that two opposite
V shaped grooves between the ribs thereof are presented to the faces of the
plaster so as to insure a sufficient thickness thereof, which is held by the wire
binding of the lathing upon the standards, whereby I avoid the disadvantage
arising in the use of standards presenting a flat face to the plaster and consequently
offering no key and allowing of only a thin layer of plaster, which gives rise
to cracks.
For stiffening the lathing of the partitions constructed as above described, I in
some cases pass metal rods diagonally through the meshes of the lathing so as to
extend from the one standard to the next and secured by wedging inside the
✓ spaces thereof. Or flat bars may be inserted vertically through the meshes of
the lathing for this purpose, either with or without the diagonal rods.
Or introduce horizontal rods extending longitudinally within the hollows of
the furrows or corrugations of the lathing at suitable distances apart.
In some cases also arrange the corrugated or stepped lathing with the ridges and
furrows running vertically instead of horizontally, in which case I prefer to
alternately reverse the position of the sheets, so that the ridges of the one sheet
come opposite to the furrows of the sheets above and below it.
Fig. 1 of the accompanying drawings shews a front view of a partition constructed
according to my above described invention with the plaster partially removed
Fig. 2 shews a vertical cross section and Fig. 3 shews a horizontal section.
The partition is constructed of the metal standards A of a cross shaped section,
between which is secured the corrugated metal lathing B, which is here assumed to
be of the wire-wove kind, and which is secured to the standards by twisting the
wires of the lathing round them as indicated at bb Fig. 1. Upon each side o
the corrugated lathing is laid the plaster C, which penetrates through the meshe

page_text: of the lathing whereby the coatings on both sides are effectually united together
so as to form a solid partition.
The plaster also receives support by resting on the horizontal ledges formed by
the corrugated lathing, such corrugations being either of the rounded form shewn
or of the angular or stepped form. The lathing is farther supported by diagonal
rods or wires D D which are passed through the meshes and also if necessary by
horizontal rods D¹, secured to the standards A.
Fig. 4 shews a horizontal section of the modified arrangement in which the
corrugated open metal lathing B is placed with the ridges and furrows vertically
instead of horizontally, the ends of the sheets being made to fit round the standards A
as shewn, while the sheets are arranged so that the ridges of one sheet are opposite
the furrows of the sheets above and below as indicated by the dotted lines.
Horizontal rods or bars passed through the meshes serve to give support to the
plaster.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what
I claim is
1. Constructing fire proof partitions of open metallic lathing bent into corrugated
or angular ridge and furrow form, secured between metal standards and coated on
both sides with plaster which passes through the openings of the lathing so as to
unite both sides firmly together, substantially as described.
2. The use, for fire proof partitions such as referred to in the first claim, of
metallic lathing composed either of perforated metal or of woven twisted wires,
bent into corrugated or angular ridge and furrow form substantially as described.
Dated this 19th day of September 1895.
ABEL & IMRAY,
Agents for the Applicant.