Improvements in the Construction of Ceilings and Walls.
Year: 1899

page_text: Date of Application, 29th May, 1899 --Accepted, 1st July, 1899
COMPLETE SPECIFICATION.
Improvements in the Construction of Ceilings and Walls.
I, AUGUST RINCKLAKE, of Munster Westphalia, in the Empire of Germany,
Architect, 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:-
-
Ceilings and walls made by stretching a net of string, flax or the like with
wide meshes underneath beams or on battens or framing and covering it with
plaster are not sufficiently sound-proof and the fastening of the plaster on the
net is difficult and takes a long time. These disadvantages are avoided by the
present constructions, which are represented in the drawing in section in Figs. 1
and II for ceilings, and in Fig. III for walls.
Underneath the beams or joists a, Figs. I and II, there is fastened from
beam to beam woven jute sheeting or other suitable close fabric and underneath
it at a short distance there is stretched a net c of string, flax, hemp, wool or the
like and fastened in a suitable manner on the beams; this structure is plastered
with a quickly hardening material, for instance gypsum or cement plaster. The
plaster penetrates the wide meshes of the net and remains sticking on the jute
sheeting or the like which thus, by the augmented weight, falls a little and lies
easily in or upon the meshes of the net.
When the cement or gypsum plaster has grown hard, the net, the jute, and
hardening material form a thin but already very resistent plate which can be
reinforced as desired by putting more plaster on it. This ceiling is more sound
proof since the upper side of the jute fabric or the like which is naturally not
penetrated by the plaster and is by itself a bad sound conductor, comes directly
in touch with the lower surfaces of the beams or joists a.
In making walls the same process takes place as in making ceilings only with
the difference necessitated by the vertical arrangement of the walls, namely,
that in ceilings the jute fabric when plastered falls automatically into the
meshes of the net, whilst with walls this has to be done by hand pressure. First
a vertical net & Fig. III, is stretched in place and then jute sheeting or the
like fabric dipped into gypsum or cement plaster is pushed on both sides against
the net which, when the plaster is set, can be further plastered in any desired
manner or thickness. This part of the wall being finished, as on the left hand
side of Fig. III, one can fasten on different parts of it battens or fillets f, then
a second vertical net y is stretched at the distance of the thickness of the fillets
from the first finished wall and from the outside jute fabric dipped in gypsum
or cement plaster is again pressed against the net g and the so formed second wall
face is then plastered from the outside. An air isolating layer i has thus been
formed between the two wall parts, of a thickness varying as required.
A wall so produced has extraordinary stability, especially when care is taken
to have good connection between the fillets f and the wall surfaces.
One can of course build up a thicker wall with more air isolating layers i one
behind the other, or they may, on the other hand be entirely omitted so that

page_text: it consists only of a net covered on one or both sides with jute fabric as before
described, and plaster.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
_
In ceilings and walls a net of hemp, flax, cotton, wool or the like caused to
adhere to a jute sheeting or the like plastered on one or both sides with cement
or gypsum plaster to form a thin but sufficiently strong plate for subsequent
reinforcement if desired, the upper or inner side of the jute or the like fabrie
next to the joists or framing, if free from plaster, and in direct touch with the
said joists or framing, forming a sound isolation substantially as described.
Dated this 29th day of May 1899.
HERBERT HADDAN & Co.,
Agents to the Applicant,
18, Buckingham Street, Strand, London, W.C.