Improvements in the Method of Jointing Concrete Paving.
Year: 1892

page_text: Date of Application, 30th Jan., 1892-Accepted, 5th Mar., 1892
COMPLETE SPECIFICATION.
Improvements in the Method of Jointing Concrete Paving.
I, WILLIAM BROWN of City Chambers, Clifford Street York in the County of
York Architect 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 :-
My improvements refer to the introduction of a suitable, flexible jointing material
to the laying of concrete paving whereby each square or block would be separate
and not adhesive to the adjoining ones and are as hereafter described.
In the laying of concrete paving in accordance with my invention, the ordinary
method would be adopted of doing it in alternate courses between wood rules or
straight edges. The material for the transverse joints being inserted at the same
time and worked in with the concrete paving.
I use for the purposes of jointing material, fine quality sarking felt, or other
similar flexible material, and the method I adopt to make the joints is as follows.
For the transverse joints the jointing material would be cut about half an inch
wider than the intended thickness of the concrete, the top edge of the jointing
material being inserted between grooved holders, made of steel or wrought iron each
end of the holders resting upon the wood rules or concrete paving. The grooved
holders to be removed after the concrete is laid in level, and when sufficiently set
and hard the projecting portion of the jointing material above the paving, to be cut
off with a knife or other sharp instrument.
The material for the longitudinal joints would be cut to the proper width to suit
the thickness of the concrete and straight on the upper edge. It would be inserted
after the wood rules are removed, being applied to the edge of the concrete and
placed even with the top surface would be kept in position until the alternate
courses of concrete were filled in and in order that my invention may be more
completely understood, reference is given to the accompanying drawings and to the
letters and marks thereon.
Figure 1 is a section of a longitudinal joint and
Figure 2 is a section of a transverse joint.
Cis the concrete paving, J the jointing material, H the steel or wrought iron
holder for inserting the jointing material, F the foundation for the concrete
paving.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I would have it under-
stood that I do not confine myself to the precise description of the jointing material
to be used, or to other of the details as shewn or described as the same may be
varied without departing from the peculiar character of the invention, but I declare
that what I claim is :-
The practical application of a suitable flexible jointing material to the laying of
concrete paving, for dividing the same into separate and non-adhesive blocks and
thus preventing cracks; substantially as and for the purposes herein set forth.
Dated this 29th day of January 1892.
WILLIAM BROWN.