IMPROVEMENTS IN THE CONSTRUCTION OF CEILINGS AND IN THE MEANS EMPLOYED THEREFOR.”
Year: 1881

page_text: LETTERS PATENT to Thomas Wrigley, of 75, Chancery Lane, in the County of
Middlesex, for an Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF
CEILINGS AND IN THE MEANS EMPLOYED THEREFOR.” A communication
from abroad by Sebastian Müeller, of Nürnberg, Germany.
..
PROVISIONAL SPECIFICATION left by the said Thomas Wrigley at the
Office of the Commissioners of Patents on the 28th March 1881.
THOMAS WRIGLEY, of 75, Chancery Lane, in the County of Middlesex.
"IMPROVEMENTS IN THE CONSTRUCTION OF CEILINGS AND IN THE MEANS
EMPLOYED THEREFOR." A communication from abroad by Sebastian Müeller, of
Nürnberg, Germany.
"
A
The object of this Invention is the novel construction and fixing of, the ceilings
of rooms, saloons, corridors, chambers, and the like, in a manner which will enable
such ceilings to be constructed with facility and expidition, and also give them a
stability and firmness not hitherto obtained.
When carrying out the object of my Invention I secure to the laths, joists, or
other supports to which the plaster of the ceiling is to be fixed a number of discs
or buttons resembling in shape the frustum of a cone or pyramid, the smaller
surfaces of which when secured in their places bed against and are in contact with
the joists, laths, or other medium forming the frame work of the ceiling, being
secured thereto by tacks, screws, or the like, at distances of about one or one and
a half inches apart, and in lines parallel to each other.
These frustum shaped discs may be made of wood, cement, burned earthernware,
clay, or stone, and when fixing them to the groundwork of the ceiling I employ
small-elastic discs or washers which I place between the head of the retaining tack
or screw and the frustum shaped disc, and the said fixing of such discs may take
place before or after the material composing the groundwork of the ceiling is in
its place.
The frustum shaped discs when fixed in manner as aforesaid enables the plaster
covering them and which forms the ceiling proper to be applied with great facility,
and also offers a retaining medium which gives great stabality and firmness to such
ceiling.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Wrigley in the Great Seal Patent Office on the 28th
September 1881.
THOMAS WRIGLEY, of 75, Chancery Lane, in the County of Middlesex.
"IMPROVEMENTS IN THE CONSTRUCTION OF CEILINGS AND IN THE MEANS
EMPLOYED THEREFOR."
The object of this Invention is- the construction and fixing of the ceilings of
rooms, saloons, corridors, and the like, the novelty of which will enable such ceilings
to be constructed with facility and expedition, and also give them a stability and
firmness not hitherto obtained.
When carrying out the object of this Invention I secure to the laths, joists, or
other surface to which the plaster is to be fixed a number of discs or buttons
resembling in shape the frustum of a cone, the smaller surface of which when
secured by means of tacks, screws, or the like, bed against the laths or other
surface forming the foundation of the ceiling.
In order that the Invention may be well understood and explained in detail, I
have hereunto annexed a Sheet of Drawings made upon a scale of about half size,
similar letters of reference being marked on corresponding parts on all the Figures
Fig. 1 represents a plan view of the ceiling, a portion of which shews the frustum
shaped buttons secured to the laths, and as they would appear before being covered
with plaster, and a portion with the ceiling complete, and
Fig. 2 represents a section of the ceiling through the line A, B, of Figure 1.
In these Figures a, a, is the lath foundation of the ceiling, and b, b, are the 2
frustum shaped buttons or discs, and c, c, the plaster. The buttons or discs b are
made of wood, cement, burnt earthenware, or stone, and are fixed by the tacks ď
with their smaller surfaces bedding against the laths a, and at distances of about
one and a half inches apart. I prefer when fixing the buttons b to the laths a to
place between the head of their retaining tack or screw and the said button a 3
small elastic washer, and the fixing of such buttons may take place either before
or after the laths or other material composing the groundwork of the ceiling is in
its place.
The frustum shaped button 6 when fixed to the laths or other foundation a in
manner as shewn in the Drawings enables the plaster c covering them, and 3
which forms the ceiling proper to be applied with facility, and also offer a retaining
medium which gives stability and firmness to ceilings so constructed.
Having now described the nature of the said Invention, together_with
the manner of performing the same, I wish it to be understood in conclusion
that what I claim as new and as of my Invention in the construction of ceilings 4
18,-
The novel employment, use, and adaptation to the laths or under surfaces of
ceilings of the frustum shaped buttons-or-dises-marked 6-in the Drawings, to be

page_text: used in the manner and for the purpose as herein substantially described, set forth,
and illustrated in the Drawings annexed.
In witness whereof, I, the said Thomas Wrigley, have hereunto set my hand
and seal, this the Twenty seventh day of September, in the year of our
Lord One thousand eight hundred and eighty one.
Witness,
J. S. LONG,
Clerk to T. Wrigley,
75, Chancery Lane.
THOMAS WRIGLEY. (LS.)