Improvements in Gully and Trap Heads and in Grids therefor.
Year: 1893

page_text: Date of Application, 18th Apr., 1893-Accepted, 20th May, 1893
COMPLETE SPECIFICATION.
Improvements in Gully and Trap Heads and in Grids therefor.
1, JOHN ABRAHAM NOEL, of 2 Richards Terrace, Cardiff, South Wales,
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 :-
This invention relates to a novel method of constructing gully, trap, drain, and
like socket heads in a single casting, and to making grids complete with pintles in
single castings that they can be fitted in the heads.
For the purpose of my invention, I make the socket heads with recesses, so that
the grids can be hinged to them for folding down in place, and folding upwards
when the gully or trap has to be cleared of any impediment found interfering with
the flow of water into a drain, such grids may however be permanently fixed by
cement, if desired.
According to the known practice of hinging grids to socket heads of gullies,
traps, or drains, the socket heads have been fitted with metal loop or staple shaped
eyes bolted, leaded, or cemented into them, which eyes are looped to the bars, or
other parts of the grids to constitute hinges.
This system is somewhat costly, and the process of connecting the eyes to the
socket heads tedious, besides necessitating the employment of metal eyes, which by
my system is obviated.
The grids affixable to socket heads according to my invention are very rapidly
produced, and in a finished condition direct.
Figure 1 of the annexed drawings is a plan of a gully, trap, or drain head.
Figure 2 sectional elevation of same.
Figure 3 perspective elevation of a grid to fit therein.
Figure 4 is a part sectional elevation of a gully, trap, or drain, head with a grid
as being placed in position.
Figure 5 perspective elevation of a grid of a slightly modified construction to
that shown at Figure 3.
Figure 6 the grid corresponds to Figure 3 as being placed in position.
The grids according to my invention have pintles A, B, moulded with them, and
to enable them to be fitted in the heads C, I form recesses D, E, in said heads of
different lengths on opposite sides, so that after the longer pintles A have been
pushed into their recesses D, the shorter pintles B are inserted in their recesses E
by canting the grids F, and then by drawing them back the grids F can be
folded down to rest in top grooves of the heads, or upon ledges G. To enable this
to be effected, I either make an under cut in the grids Fat H near the longer
pintles A to permit of them passing into position, as seen at Figure 4, or I form a
slot I in each head C, and make the web or part J of the grid F narrow or thinner
to pass into the slot I, as indicated at Figure 6.
When the grids are in position, the slots I are filled in with a cement to lock the
grids in place as hinged to the heads.
When the grids are formed with undercuts, as at Figures 4 and 5, I purpose
fitting a metal plate over the undercut to close up the gap, which would otherwise
be exposed, and also to prevent the grids being lifted out of the heads.
Should one of my grids become broken, the cement only has to be chipped away,
or the plate removed, and a fresh one fitted in as before explained.
It will be observed that each head with its recesses, and with, or without the slot,
is in one piece, and that the grids are made as separate castings each in one piece
with the pintles.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The improvement in gully, trap, or drain beads, and in grids therefor, as above
explained, and constructed substantially as shown on the annexed drawings.
2. Constructing gully, trap, or drain heads with recesses of different depths,
and with or without slots in a single casting, for the reception of grids with pintles
of different lengths, and with or without undercuts or webs, as hereinbefore described,
.and substantially as shown in the annexed drawings.
Dated this 18th day of Anril 1902
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said John Abraham Noel.
H.
GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said John Abraham Noel.