Improvements in the Manufacture of Plaster.
Year: 1895

page_text: Date of Application, 26th June, 1895
Complete Specification Left, 25th Mar., 1896-Accepted, 25th Apr., 1896
Improvements in the Manufacture of Plaster.
I JOHN CALDWELL BLOOMFIELD of Castle Caldwell, Leggs, Fermanagh,
Ireland, Gentleman, do hereby declare the nature of this invention to be as
follows:-
•
This invention relates to the manufacture of plaster applicable as a fine stuff
or top finishing wash or for covering brick walls. Plaster made in accordance with
this invention forms a wash which will not rub off, thus dispensing with the
necessity of painting, and is at the same time impervious to germs and atmospheric
influences, rendering it particularly adapted as a fixed sanitary wash for covering
the walls and ceilings of barracks, churches, hospitals and such like buildings.
In manufacturing the plaster which forms the subject of the present invention,
I intimately mix bydraulic lime with 5% of sulphate of lime (preferably in the
form of plaster of Paris) and 5% of finely ground shale. To this mixture I add
iron oxide, yellow ochre or other suitable colouring materials as desired. Plaster
so made is mixed with water in the ordinary way to a creamy consistency in which
state it is applied to the wall, ceiling or other part to be covered.
Dated this 26th day of June 1895.
F. W. GOLBY,
36 Chancery Lane, London, W.C., Patent Agent for the Applicant.
Improvements in the Manufacture of Plaster.
I, JOHN CALDWELL BLOOMFIELD of Castle Caldwell, Leggs, Fermanagh,
Ireland, Gentleman, 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:-
This invention relates to the manufacture of plaster applicable as a fine stuff or
top finishing wash or for covering brick walls. Plaster made in accordance with
this invention forms a wash which will not rub off, thus dispensing with the necessity
of painting, and is at the same time impervious to germ and atmospheric influences,
rendering it particularly adapted as a fixed sanitary wash for covering the walls
and ceilings of barracks, churches, hospitals and such like buildings.
In manufacturing the plaster which forms the subject of the present invention,
I intimately mix hydraulic lime with 5% of sulphate of lime (preferably in the
form of plaster of Paris) and 5% of finely ground shale. That is to say I
take of
Hydraulic lime
Sulphate of lime (preferably plaster
of Paris)
Finely ground shale
100 parts by volume.
5
"
"
5
"
"
Total
-
110
"
"
2

page_text: and to this mixture I add iron oxide, yellow ochre, or other suitable colouring
materials as desired.
Plaster so made is mixed with water in the ordinary way to a creamy
consistency in which state it is applied to the wall, ceiling or other part to be
covered.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is ;-
A plaster compound composed of hydraulic lime, sulphate of lime, and finely
ground shale intimately mixed together in about the proportions substantially as
herein described.
Dated thin with day of March 1906
F. W. GOLBY,
36 Chancery Lane, London, W.C., Patent Agent for the Applicant.