Improvements in the Manufacture of Metallic Paving for Roadways, Footpaths, Covers for Streets, and the like.
Year: 1893

page_text: Date of Application, 7th Mar., 1893-Accepted, 27th May, 1893
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Metallic Paving for Roadways,
Footpaths, Covers for Streets, and the like.
I, HENRY BRINSLEY SHERIDAN, of the City Liberal Club, Walbrook, in the
City of London, Gentleman, 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 :-
The object of this invention is to cheapen the cost of manufacture of metallic
paving for streets, footpaths, roadways and the like by enabling such paving to be
rolled with dovetailed grooves therein for retaining the soft metal or other substance
used to obtain a good foothold for animals and pedestrians.
Now according to this invention I construct metal paving from wrought iron steel
manganese or nickel steel or other suitable hard ductile metal formed into paving
blocks or slabs by rolling in the manner now to be described with reference to the
accompanying drawing in which :-
Figure 1 represents section of a piece of metallic paving constructed according to
this invention.
Figure 2 is part plan of same.
Figure 3 is partial elevation of first pair of grooving rolls.
Figure 4 is partial elevation of second pair of grooving rolls.
Figure 5 is elevation of finishing rolls.
The same letters denote the same parts in all the figures. a is the paving block
formed from wrought iron steel manganese steel, nickel steel or other hard ductile
metal which may be given any desired shape by rolling.
The block a has formed therein a series of dovetailed grooves 6 which may be
filled with spelter or other suitable soft metal c.
Intermediate with the grooves b are other semicircular grooves d for giving a
good foothold to draught animals, pedestrians and others, e e are holes to admit
screws or pins to fasten the block a to the roadbed.
The block a is formed as follows.
The hot metal is passed between rolls in the usual way till it forms a slab of
about the length and breadth required this slab is then heated and passed between a
pair of rolls shaped as shown at Figure 3, whereof the lower roll f is parallel and
the upper roll 9 is formed with a series of rings or collars 6' thereon somewhat
shallower than the grooves b in the block a the edges of the said collars being
rounded. After passing through these rolls the slab is (after being again heated if
necessary) passed between the rollers shewn at Figure 4 the lower one f being
parallel and the upper roll g having collars 6' 6' thereon with square corners as
shewn whereby the grooves b formed by the previous rolling are made the required
depth and the corners squared.
The slab (after being again heated if necessary) is then passed between the rollers
shewn at Figure 5, the lower roll being parallel as before and the upper one g
having rings or collars thereon c' whereby the grooves c are formed this pair of
rolls not only forms the grooves c by depressing the metal beneath the collars c' but
also displaces it in the direction of the length of the rolls and so causes the
rectangular grooves 6 formed by the previous rollings to become narrower at the top
than at the bottom or dovetailed as shewn at b Figure 1 the edges
of the slab or
block a being prevented from spreading by the flanges on the roll f.
When the block or slab a is cold melted spelter lead or other suitable soft metal
can be run into the grooves b and the block is then ready for use hh are flanges to
prevent the metal from spreading when being rolled.
It will be understood that the rolls shewn in Figures 3, 4 and 5 are supported by

page_text: housings in a rolling mill in the usual way as I do not claim any novelty in the
method of mounting or driving the rolls as my rolls may be adapted to fit any
existing mill.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that I am
aware of the Specification of Letters Patent No. 16852 of 1890 granted to Jonathan
Mason and Joseph Mason and William Squires Codner and 1 do not claim anything
described and claimed therein but what I claim is :-
1. Forming improved metallic paving blocks or slabs with dovetailed grooves
therein by rolling substantially in the manner specified and for the purpose stated.
2. The improved rolled metal paving block or slab having dovetailed grooves b
therein for filling with spelter or other suitable soft metal d and intermediate
semicircular grooves c substantially as described and shewn by Figures 1 and 2 of
the accompanying drawing and constructed in the manner specified.
Dated this 7th day of March 1893.
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicant.