Improvements in Metal Paving Setts or Blocks.
Year: 1893

page_text: Date of Application, 10th June, 1893
Complete Specification Left, 12th Mar., 1894-Accepted, 21st Apr., 1894
"
PROVISIONAL SPECIFICATION.
Improvements in Metal Paving Setts or Blocks.
We, CHARLES CHICHELE-PLOWDEN of 21 St. Helen's Place in the City of
London, Engineer, and FRANK UNWIN of 56 Nightingale Road, Harlesden in the
County of Middlesex, Civil Engineer do hereby declare the nature of this invention
to be as follows :-
:-
Our invention has reference to metal paving setts or blocks, such as are
used in paving streets, roadways or bridges, whether in conjunction with tramways
or not.
It has been found that such blocks are liable to work loose through the grouting
material such as lime, cement, pitch or other material used to bind them together
not being able to adhere properly to the smooth surface of the iron at the sides or
ends of the blocks as the case may be.
Now the object of our invention is to provide for the proper setting of metal
paving setts or blocks so that they shall not work loose after being laid and grouted.
And our invention consists in casting or forming the sides or ends or both sides and
ends of the blocks in such manner as to give a key or hold to the lime, cement or
other grouting used as the binding material.
In carrying out our invention we make the sides or ends or both sides and ends
of the blocks with grooves, slots, studs, mortises or other depressions or projections
of such form and shape as may be thought most desirable. The grouting when run
in between the setts fills the grooves, slots, mortises or other depressions or
the spaces between the studs or other projections and becomes thereby firmly and
permanently secured.
Dated this 9th day of June 1893.
J. C. MEWBURN,
55 & 56, Chancery Lane, London, Chartered Patent Agent.
COMPLETE SPECIFICATION.
Improvements in Metal Paving Setts or Blocks.
We, CHARLES CHICHELE-PLOWDEN late of 21 St. Helen's Place, in the City of
London, but now of 38 Great St. Helen's, in the said City, Engineer, and
FRANK UNWIN, late of 56 Nightingale Road, Harlesden, in the County of
Middlesex, but now of 38 Great St. Helen's, aforesaid, Civil Engineer, 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:-
Our invention has reference to metal paving setts or blocks such as are
used in paving streets, roadways or bridges, whether in conjunction with tramways
or not.
It has been found that such blocks are liable to work loose through the grouting
material such as lime, cement, pitch or other material used to bind them together
or to adjoining granite or wood blocks not being able to adhere properly to the
smooth surface of the iron at the ends or sides of the blocks as the case may be.
Now the object of our invention is to provide for the proper setting of metal
paving setts or blocks so that they shall not work loose after being laid and grouted.

page_text: And our invention consists in casting or forming the sides or the ends, or both the
sides and the ends of the blocks in such manner as to give a key or hold to the
lime, cement or other grouting used as the binding material.
In carrying out our invention we make the sides or the ends, or both the sides and
the ends of the blocks with grooves, slots, studs, mortises or other depressions or
projections of such form and shape as may be thought most desirable. The grouting
when run in between the setts fills the grooves, slots, mortises or other depressions,
or the spaces between the studs or other projections, and the blocks become thereby
firmly and permanently secured.
The accompanying drawings show, by way of example, two forms of metal
paving setts or blocks made according to our invention.
Figure 1 represents a solid block a cast or formed with ordinary studs b b on the
top and bottom faces. cc are projections cast or formed on the ends of the block
(there being projections on both ends) and d d recesses or grooves cast or
formed on the sides of the block.
Figure 2 represents a hollow block a cast or formed with grooves or recesses d d
at both ends and both sides. The hollow e will preferably be filled with cement or
other suitable material before the block is laid, as is usual when hollow blocks
are employed.
It will readily be understood that when these blocks are laid either contiguous to
each other or to granite or wood blocks and grouting is run in between them the
grouting will fill the grooves or recesses and the spaces between the projections and
will form into a solid mass, thus rendering it impossible for the blocks to move after
the grouting has set.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
Casting or forming the sides or the ends, or both the sides and the ends, of
metal paving setts or blocks, substantially as hereinbefore described, so as to
give a key or hold to the lime, cement or other grouting used as a binding
.material.
Dated this 10th day of March 1894
J. C. MEWBURN,
55 & 56, Chancery Lane, London, Chartered Patent Agent.