Tieing Walls, Chimney Shafts, Piers for Bridges, and other Brick or similar Structures.
Year: 1892

page_text: Date of Application, 25th Apr., 1892
Complete Specification Left, 25th Jan., 1893-Accepted, 11th Mar., 1893
PROVISIONAL SPECIFICATION.
Tieing Walls, Chimney Shafts, Piers for Bridges, and other Brick
or similar Structures.
WILLIAM GEORGE JOHNSON, Instrument Maker of 31, Spencer Street,
Clerkenwell, and JOHN CHARLES COULTER, Carpenter and Cabinet Maker of
31, Spencer Street, Clerkenwell, in the County of Middlesex, do hereby declare
the nature of this invention to be as follows:-
The object of this invention is to provide means for the construction of a brick
or similar structure in such a manner as to effectually prevent cracking, bulging, or
displacement of any of its members.
.
In carrying out our invention we construct a series of bricks, which may be of
various shapes and sizes, each brick being provided with one or more dovetail
slots or notches, so placed that when any two bricks of suitable design are laid in
the required position, a key-piece or tie formed as a double wedge, can be inserted
between them so as to engage in the dovetail slots or notches of the said bricks,
and thus effectually key them together. The said key-pieces can be moulded in
the same material as the bricks, or they may be made of cast iron, prepared wood;
or any other suitable material: and they may be set in position with ordinary
mortar, cement, or any other of the known compositions used for such purposes in
the building trades.
It is obvious that to meet the various requirements in building work, we can
construct bricks on this principle of many shapes and sizes without departing from
the nature of our invention: for instance, we have made special forms of bricks for
the construction of arches, square or circular chimney shafts, piers for bridges, etc.
all of which are provided with the aforesaid dovetail slots or notches which enable
adjacent bricks to be keyed together when in position by the above referred to key-
piece or tie: the said ties being also varied in shape to suit special cases.
Orth A1 1000
W. G. JOHNSON.
J. C. COULTER.
COMPLETE SPECIFICATION.
Tieing Walls, Chimney Shafts, Piers for Bridges, and other Brick
or similar Structures.
We WILLIAM GEORGE JOHNSON Instrument Maker and JOHN CHARLES
COULTER, Carpenter and Cabinet Maker both of No. 8 Red Lion Square,
London, W.C. but late of 31, Spencer Street, Clerkenwell, E.C. 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 consists of one or more series of specially formed bricks for
building purposes, and has for its object the tieing of walls, chimney shafts, piers
etc. in a manner to reduce the risk of cracking, bulging, or the displacement of any
of their members.
Bricks made in accordance with this invention are each provided with one or
more dovetail or similarly shaped notches or slots so placed that when any two
bricks of suitable pattern are laid in the required position, a key-piece or tie formed
larger at its ends than at its middle can be inserted between them so as to engage
in the slots or notches of the said bricks in a manner that effectually keys the
latter together. The said key-pieces may be moulded in the same material as the

page_text: bricks, or they may be of cast or wrought iron, prepared wood, or any other
suitable material, and they may be set in position with ordinary mortar, cement
or any other of the known compositions used for such purposes in the building
trades.
In Figs. 1 to 4 of the accompanying sheet of illustrated drawings are
represented some of the forms of bricks and keying-pieces made in accordance
with our invention, being such as would be used in ordinary building con-
struction; but it is obvious that to meet the various requirements in building
work, we can construct tieing bricks on this principle of many shapes and sizes
without departing from the nature of our invention; for instance, we have made
special forms of bricks for use in the constructions of arches, square and circular
chimney shafts, piers, etc., also bricks for decorative purposes all of which are
provided with the aforesaid slots or notches which enable adjacent bricks to be
keyed together when in position by the suitably formed key-pieces or ties referred
to above.
Fig. 1 represents a series of bricks a a, a, provided with notches 6 to receive the
keying pieces c.
Figs. 2 & 3 shew alternative shapes for making the key-pieces, also corre-
spondingly shaped bricks; two bricks being shewn in each case with their keying-
pieces set in place.
Fig. 4 shews another form of keying-pieces specially adapted for keying bricks
lying parallel to one another, which may or may not have a space between, as in
the case of hollow or thick walls etc.
Having now particularly described and ascertained the nature of this our
said invention, and in what manner the same is to be performed we declare that
what we claim is
1st. A series of bricks provided with notches or slots of the shape and for the
purpose substantially as herein set forth and illustrated by the accompanying
drawings Figs. 1 to 4.
2nd. In the construction of all classes of brickwork, the employment of bricks
having notches formed therein for the purpose of being used in combination with
key-pieces or ties substantially as herein described and illustrated by the accom-
panying drawings.
3rd. The combination of any of the bricks and keying piéces shewn in accom-
panying drawings Figs. 1 to 4.
Dated this with ȧn of 1000
WILLIAM GEORGE JOHNSON.
JOHN CHARLES COULTER.