IMPROVEMENTS IN BRICKS FOR PREVENTING WET FROM PERMEATING WALLS to be as follows:
Year: 1884

page_text: I WILLIAM PARRY, of Bangor, in the county of Carnarvon do hereby declare the
nature of my said invention for "IMPROVEMENTS IN BRICKS FOR PREVENTING WET
FROM PERMEATING WALLS to be as follows:-
"
This invention has for its object a brick that will shed the rain and that will
catch the percolating water and deliver it to the outside.
At
It consists of a brick with a front (or end portion in the case of ties) projecting
slightly downward say to an angle of 10 to 20 degrees with the horizontal and say
a quarter of a inch thicker and longer than the bedding portion of the brick.
the back of this projecting portion in the vertical seams is a vertical cut or groove
in each brick, forming together a tunnel or hole that will intercept the water
permeating the vertical seam. This groove is made angular to give more resistance
to the water passing round to the back of it. The bottom of each brick or bottom
and top I prefer to have made with a hollow for mortar as is often done when the
bricks are required to have very thin external joints.
The mode of action is as follows. The bricks being laid without mortar between
the front portions, which are usually about 1 inch wide, but with mortar between
the main body of the one brick and the next any rain that falls on the brick will
drain off as it can hardly run up the sloping part; any that falls in the vertical
crack can get no further than the cut or groove but runs down that and out down
the sloping part of the brick below. The front portions being from a quarter to
half an inch longer and thicker than the body of the brick will lie close together
even when there is a good bed of mortar between the bricks-while if the mortar
squeezes into the groove and fills it no harm is done, as it cannot do that without
making a good joint back of the groove.
In my experimental bricks, the sizes are (in inches) 9 by 4 by 3 over all,
3 by 8 mortar bed on side, 3 by 2 mortar bed on ends, groove half an inch
wide and about half an inch deep below surface of end of front part, but about
a quarter of an inch deep below surface of the body of the brick. The front
portion I prefer to form a step below the body of the brick, so as to present an
additional obstruction to wet.
Dated this first day of January 1884,

page_text: 1
I WILLIAM PARRY of Number 12 Lower Street Caellepa Bangor in the County
of Carnarvon Bricklayer, do hereby declare the nature of my invention for
IMPROVEMENT IN BRICKS FOR PREVENTING WET FROM PERMEATING WALLS and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
The stretcher bricks and ashlars of Stone or Terra Cotta are to be constructed
and worked out on the top bed with a drip of three eighth of an inch deep as
shown by E figure Number 3. (of the Drawings sent herewith) and from the
bottom of the drip outwards sloped or weathered another three eighth of an inch
making a total of three quarters of an inch of drip or instep on the horizontal
joint.
The width of the weathering or slope for bricks to be one inch and three
quarters as shown by B figure Number 1. and for Stones and Terra Cotta
according to the dimensions of the blocks to be used.
The bottom bed is to be constructed and worked out to correspond and to fit
over the top bed by having the part forming the drip of the top bed projecting
three eighth of an inch as shown by E figure Number 3 and from the edge of this
projection outwards to be bevelled or sloped another three eighth of an inch so as
to fit tight over the weathering of the top bed.
The header bricks and header ashlars of Stone and Terra Cotta are to have both
beds the same in every respect as the stretchers. The angles are to have both beds
constructed and worked out the same as the stretchers, the drip and weathering
are to be worked and carried around the ends or returns and properly mitred as
shown by figures Numbers 4 and 5.
The vertical joints throughout are to be constructed and worked by forming a
groove half an inch wide and half an inch deep into the side or joint of the bricks as
shown by letter D on the Drawings, the back or inner side of the groove is to be
lined with the back of the drip and weathering so as to present an additional
obstruction to water and damp. These grooves may be filled up (if necessary)
with pieces of salt glazed fire bricks or any other materials fitted into them.
The right and left angle bricks figures Nos 4 and 5 are to have on their return
header and stretcher ends drips and weatherings similar in every respect to the
drips and weatherings of the stretcher and header bricks and grooves as shown by
letter D. figures Numbers 4 and 5.
The drips and weatherings are to be of the same depth and width throughout.
The materials specified and the dimensions given in this Specification are inserted
only by way of example and not with the intention of restricting or confining the
patent to such materials or dimensions.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
Wall-facing bricks with angular grooves, and projecting parts, which cover the
horizontal joints substantially as described.