Improvements in the Construction of Partition Walls and the like and means therefor..
Year: 1899

page_text: Improvements in the Construction of Partition Walls and the like and
means therefor..
I, JOHN CHLAPMAN, of Ealesfield, Corbridge-on-Tyne, in the County of Northum-
berland, Plasterer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in the construction of partition walls
and the like and in means therefor and consists in constructing the partitions
as in manner hereinafter explained, special blocks or slabs being used. A parti-
tion constructed according to this invention is intended as a substitute for lath.
and plaster partitions and the like.
Paris plaster or other suitable material is formed or moulded into slabs of a.
convenient area and thickness so that they can be easily lifted and placed in
position; the slab is lightened by a series of open ended cores which extend
between two edges of the slab; these edges being those which are at the top and.
bottom respectively of the slab when in position that is to say, the longitudinal
edges. The cores are parallel to each other and preferably equidistant. When
in position each vertical edge preferably intersects a core so that when two slabs
are placed alongside each other, a whole core is formed at the junction. The
sides of the slab are preferably roughened in the mould. The slab is strengthened:
by having galvanized wire netting about the width of the slab interlaced between
The
the cores during the process of moulding; one piece of wire in each slab.
slabs may be made of Paris plaster, lime, cement or other suitable material or a
mixture of all or any, but preferably they are made of l'aris plaster alone with a
weak solution of glue or other suitable substance added to increase the toughness.
As no wood lathing or stoothing required in making partitions of these slabs,
the partitions are practically fireproof.
The mode of fixing is as follows:-A row of slabs is placed in position on
the floor; at each vertical joint of the slabs a wire is stretched from the floor
to the ceiling or overhead joist.. One or more intermediate wires may also be
carried from the floor to the ceiling in each set of vertical slabs and passing
through the cores. A longitudinal wire is stretched from wall to wall or if
there be a doorway or other opening in the partition, from wall to frame, at
each vertical jointing of the slabs. The longitudinal wires lie in grooves pro-
vided in the top edges of the slabs. These vertical and horizontal wires increase.
the rigidity of the partition. Nails in the wall or door frame with comparatively
large heads project into the half core at the junction of the slab with the wali
or frame. These half cores are filled with liquid plaster and after setting the
slab becomes firmly fixed to the wall or frame. Nails may also project from the
floor into each or several cores. If skirting boards have to-be-attached to the
bottom of the partition, the cores of the bottom slabs are filled with plaster to a
height to suit the boards and pieces of wood may be inserted in or between the
slabs at the joints to which the skirting or other moulding may be attached.

page_text: The cores through which the vertical wires pass are gradually filled with
plaster as the slabs are placed on each other, and these filled cores serve as keys
binding the whole together. The slabs may also be applied to walls instead of
ordinary plaster work, and if preferred the thickness may be halved, the divided
cores being against the wall.
Dated this 30th day of March 1899
HERBERT HADDAN & Co.,
. Agents to Applicant.
Improvements in the Construction of Fartition Walls and the like and
means therefor::
I, JOHN CHAPMAN, of Ealesfield, Corbridge-on-Tyne, in the County of Northum-
berland, Plasterer, 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: —
J.
This invention relates to improvements in the construction of partition walls
and the like, and in means therefor and consists in constructing the partitions
as in manner hereinafter explained, special blocks or slabs being used. A parti-
tion constructed according to this invention is intended as a substitute for lath
and plaster partitions and the like.
In the accompanying drawing Fig. 1 is an elevation and Fig. 2 plan of a slab
of general form; Fig. 3 shews an arrangement of slabs on two floors, one having
a doorway.
Paris plaster or other suitable material is formed or moulded into slabs A of a
convenient area and thickness so that they can be easily lifted. and placed in.
position. The slab is lightened by a series of open ended cores B which extend
between two edges of the slab; these edges being those, which are at the top and
bottom respectively of the slab when in position, that is to say, the longitudinal
edges. The cores are parallel to each other and preferably equidistant.. When
in position each vertical edge preferably. intersects a core so that when iwo
slabs are placed alongside each other a whole core is formed at the junction.
The outsides of the slab are preferably roughened in the mould to form a key for
finishing coat of lime, cement or other suitable substance. The slab is
strengthened by having galvanized wire netting C about the width of the slab
interlaced between the cores during the process of moulding, one piece of wire
in each slab. The slabs may be made of Paris plaster, lime,. cement or other
suitable material or a mixture of all or any but preferably they are made of Paris
plaster alone with a weak solution of glue or other suitable substance added, to
increase the toughness. As no wood lathing or stoothing is required in making
partitions of these slabs, the partitions are practically fireproof.
The mode of fixing is as follows: A row of slabs is placed in position on the
floor. At each vertical joint of the slabs a wire (not shown) may be stretched
from the floor to the ceiling or overhead joist G. One or more intermediate
wires may also be carried from the floor to the ceiling in each set of vertical
slabs and passing through the cores. A longitudinal wire or rod or bolt D may
be stretched from wall to wall, or if there be a doorway or other opening in the
partition, from wall to frame, at each vertical jointing of the slabs. The
longitudinal wires may lie in grooves provided in the top edge of the slabs.
These vertical and longitudinal, wires increase the rigidity of the partition.
Nails in the wall or door frame with comparatively large heads project into
.
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5446
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page_text: the half core at the junction of the slab with the wall or frame. These half
cores are filled with liquid plaster and after setting, the slab becomes firmly
fixed to the wall or frame. Nails J may also project from the floor F into each
or several cores. If skirting boards have to be attached to the bottom of the
partition, the cores of the bottom slabs are filled with plaster to a height to
suit the boards, and pieces of wood may be inserted in or between the slabs at
the joints to which the skirting or other moulding may be attached. The cores
through which the vertical wires pass are gradually filled with plaster as the
slabs are placed on each other, and these filled cores serve as key's binding the
whole together. The slabs may be also applied to walls instead of ordinary
plaster work, and if preferred the thickness may be halved, the divided cores
being against the wall.
As shown in Fig. 3 the slabs may also be specially formed for arrangement as a
flat arch as at A, in one case above the doorway and in the other next the floor
so that in case of fire, if the floors should give way, the partitions would remain
standing one or more longitudinal rods or bolts if thought necessary being
stretched from wall to wall to tie the latter together at the arch. The slabs may,
of course, be arranged in any other convenient way to suit requirements. The
beforementioned vertical and horizontal wires are not shewn in the drawings.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. In the construction of partition walls and the like the combination of slabs
formed of Paris plaster or other suitable material, having cores running through
said slabs and having wire netting interlaced between said cores with or without
vertical and horizontal wires or suitable tie rods and projecting nails for the
purpose of holding the slabs in place substantially as described.
2. The method of constructing partition walls and the like of slabs formed of
l'aris plaster or other suitable material having in their edges or ends half cores
consisting in driving nails so as to project from the walls against which the
partition wall is to abut, placing the slabs so that the nails may project into the
furrow formed by the half cores at the ends of the partition wall and placing
filling material in said furrows for the purpose set forth.
3. The method of constructing partition walls and the like of slabs formed of
Paris plaster or other suitable material traversed by hollow tubular passages,
consisting in building up said slabs edge to edge and passing wires from ceiling
to floor or from end to end through said passages or some of them and placing
filling material in those passages through which the wires pass, substantially as
and for the purpose set forth.
4. A slab for use in the construction of partition walls and the like comprising
parallel open ended cores and wire netting interlaced between the cores sub-
stantially as herein described and illustrated.
Dated this 30th day of December 1899.
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, W.C.