An Improved Coping and Dish for Gully and other Traps.
Year: 1890

page_text: Date of Application, 3rd Apr., 1890
Complete Specification Left, 20th Sept., 1890-Accepted, 6th Dec., 1890
PROVISIONAL SPECIFICATION.
An Improved Coping and Dish for Gully and other Traps.
FREDERICK CHARLES LYNDE 25 (ross Street, Manchester, Civil & Sanitary
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention consists in making a coping and dish in one piece of earthenware
or other suitable material and of such a form that no angular corners or crevices shall
be present for the accumulation of grease and other foul matter, and to prevent the
leakage which generally occurs, also to prevent the choking of the grid and to facilitate
the operation of cleansing and the fixing of discharge pipes so as to avoid sharp bends
at their lower ends.
I make my coping & dish in one piece, which avoids having a joint between the
coping and dish which is the cause of so much leakage in the case of ordinary dishes
and copings.
The peculiar shape of the interior of my coping is such that it presents only
curved smooth surfices and thus obviates the objectionable accumulation of grease
which is generally found to take place in other copings.
I dispense with the rebate which receives the grid in ordinary dishes and construct
a conical grid instead of the almost flat grid ordinarily used. This conical grid has
three or more guides upon its under side to maintain its position being central, and
may be provided with side channels to avoid overflow, and with a lifting bar.
The back of the coping is made to taper towards its upper edge so as to
permit of the lower ends of discharge pipes being fixed without sudden bends.
I also construct a leaf grid which is perforated in a peculiar manner so as to become
adjustable to fit discharge pipes, by the removal of a section of the grid.
This grid rests upon small projections or recesses on the interior of the coping.
T
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11000
FRED. C. LYNDE.
COMPLETE SPECIFICATION.
An Improved Coping and Dish for Gully and other Traps.
FREDERICK CHARLES LYNDE 25 Cross Street, Manchester, Civil and Sanitary
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 :-
My invention consists of a coping and dish made in one piece of earthenware or
other suitable material, of such a form that no angular corners or crevices shall be
present for the accumulation of grease and other foul matter and to prevent the leakage,
which generally occurs in other kinds of copings and dishes also to prevent the
choking of the grid and to facilitate the operation of cleansing and the fixing of
discharge pipes.
I make my coping and dish in one piece which avoids having a joint between the
coping and dish which is the cause of so much leakage in the case of other dishes and
copings.
The peculiar shape of the interior of my coping is such that it presents only curved
or rounded smooth surfaces and thus obviates the objectionable accumulation of grease,
which is generally found to occur in other copings.
. I dispense with the rebate which receives the grid in ordinary dishes and construct
a conical grid instead of the ordinary almost flat grid generally used. The conical
grid has three or more guides upon its under side which maintain it in a central
[Pica d

page_text: position and to avoid stoppage and consequent overflow of water, the grid is supported
so as not to be in contact with the coping all round, thus a space is left under the
edge of the grid which permits water.to pass and prevents the overflowing of the
coping when the grid is obstructed.
For convenience of lifting the grid, a lifting bar may be provided as shewn in
Figs. 9&10. Partly projecting above the coping and resting upon it, or upon small
projections or recesses formed for the purpose, I construct a leaf guard or grid, which
I preferably make of cast iron. See Figs. 1, 2, & 4 (one, two, and four). I perforate
the grid in such a manner that by breaking away certain portions a space is formed
through which discharge pipes may pass. In order to do this, I form notches in the
bars of the grid to facilitate the fracturing of them at definite places which vary
according to the orifice required in the grid. On reference to Fig. 4 those notches
will be seen in dotted lines. The two large circles shewa upon this figure (No. 4)
indicate the positions of two large discharge-pipes which would necessitate all the
bars, excepting those on the outside, being broken away in order to allow these two
pipes to pass through the grid. Round the outside of the grid which I purposely
make of box form, I perforate holes for the passage of air, for the purpose of ventilation.
In cases where the well known method of disconnecting waste-pipes at a distance
away from the traps, is required I form a channel in the same piece of material as
the coping as shewn at Figs. 5 and 6, and thus avoid any joint through which
leakage could occur. The bottom of the channel is made to slant towards the coping,
so as to flush itself clean.
It is obvious that the copings may be made of circular form with or without
channels, and that the channels may be upon either or both sides or back of the coping.
On reference to the drawings it will be seen that :-
Fig. 1. represents a sectional elevation of coping and grid with leafguard.
Fig. 2. represents a transverse section of Fig. 1. with grid removed.
Fig. 3. plan of coping with leafguard and grid removed.
Fig. 4. plan of leafguard shewing space occupied by two down-pipos.
Fig. 5. side elevation of coping with channel to receive discharge from waste pipe.
Fig. 6. front elevation of Fig. 5.
Figs. 7. and 8. elevation and plan of circular coping.
Figs. 9. & 10. elevation and plan of grid detached.
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 what I
claim is,
1. The use and manufacture of the improved copings and dishes substantially as
herein before described and shewn in Figures 1, 2, 3, 5, 6, 7 and 8.
2. The use and manufacture of a coping and dish with or without side channel or
channels in one piece of material made of such a form that no angular corners or
crevices shall be present for the secretion of grease or foul matter, substantially as
he rein before described.
3. The use and manufacture of a conical grid with guides and overflow space
substantially as hereinbefore described and shewn by Figs. 9 and 10.
4. The use and manufacture of a leaf guard as bereinbefore described and shewn
by Figs. 1, 2 and 4.
5. The use and manufacture of grids for placing in or over copings, designed.in
such a manner_that by means-of-notches purposely formed in the bars of the grids,
a section or sections may be broken away for permitting a pipe or pipes to pass
through, substantially as hereinbefore described.
Dated this 19th day of September 1890.