MENTS IN FACING BRICKS
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by the said Charles Drake at the Office
of the Commissioners of Patents on the 20th August 1881.
CHARLES DRAKE, of Battersea, in the County of Surrey, Builder.
MENTS IN FACING BRICKS."
" IMPROVE-
My Invention relates to a cheap concrete brick, one side of which is covered by
a hard weather tight facing of marble or granite mosaic capable of good polish, and
consequent resistance to decay and weather.
To effect this I construct the body of the brick of any convenient strong cheap
cement concrete.
I place first in the mould a special facing over one side of the brick of suitable
thickness, and composed of marble or granite concrete prepared in the following
manner:
The marble and granite are cleansed and crushed small, so that the particles fit
closely together over the face of the brick. For ornamental purposes I may mix or
use special shades of granite or marble so as to obtain great variety of colour.
The crushed stone is then mixed with the smallest proportion of fine Portland
cement (previously freed from grit) consistent with proper cohesion, and at the
same time presenting a good face for polishing.
For faces of special bardness and capability of polish I place the bricks after
removal from the moulds in a silicate bath.
The exterior surface of the brick may be polished by known methods of stone
polishing, and will then be found ornamental in appearance, cleanly, and not liable
to accumulate dirt or subject to decay.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Drake in the Great Seal Patent Office on the 17th February
1882.
CHARLES DRAKE, of Battersea, in the County of Surrey, Builder.
MENTS IN FACING BRICKS."
"IMPROVE-
My Invention relates to a cheap concrete brick, one side or more of which is
covered by a hard weathertight facing of marble or granite mosaic capable of
good polish, and consequent resistance to decay and weather.
To effect this I construct the body of the brick of any convenient strong cheap
cement or other concrete.
I place first in the mould a special facing over one side of the brick or more
(where more than one surface will be exposed when fixed as at angles and reveals)
of suitable thickness, and composed of marble or granite concrete prepared in the
following manner :-
The marble and granite are cleansed and crushed small, so that the particles fit
closely together over the face of the brick. For ornamental purposes I may mix or
use special shades of granite or marble so as to obtain great variety of colour, and
the face of my brick may be formed into patterns of suitable device.
The crushed stone is then mixed with the smallest proportion of fine Portland
cement (previously freed from grit) consistent with proper cohesion, and at the
same time presenting a good face for polishing.
For faces of special hardness and capability of polish I place the bricks after
removal from the moulds in a silicate bath.
The exterior surface of the brick may be polished by known methods of stone
polishing, and will then be found ornamental in appearance, cleanly, and not liable
to accumulate dirt or subject to decay; or the stony element of the facing may bé
brought up and exhibited by simple rubbing where polish is not required.
And having now fully described and ascertained the nature and object of my
Invention and the manner in which is to be performed, be it known that what I
consider novel and useful and desire to protect my Letters Patent is,-
I. The construction of a brick combining a suitable backing with special facing
capable of direct polish and resisting decay, substantially as and for the purposes
specified.
II. The combination in such facing composition of cleansed and crushed stone
and fine Portland cement, substantially as and for the purposes specified.
III. The treatment of my facing brick in a silicate bath for special hardness,
substantially as and for the purposes specified.
In witness whereof, I, the said Charles Drake, have hereunto set my hand
and seal, this Sixteenth day of February, in the year of our Lord Eighteen
hundred and eighty-two.
Signed, sealed, and delivered
in the presence of
S. P. WILDING,
23, Rood Lane,
London, E.C.,
Patent Agent.
CHARLES DRAKE. (L.S.)