IMPROVEMENTS IN DRAIN TRAPS
Year: 1888

page_text: 1888
Date of Application, 28th July,
Complete Specification Left, 6th Sept., 1888
Complete Specification Accepted, 12th Oct., 1888
I GEORGE DAVIS Builders Merchant of 24 Bradford Street Walsall in the County
of Stafford do hereby declare the nature of my invention for IMPROVEMENTS IN DRAIN
TRAPS to be as follows:-
This invention consists in the following arrangement of parts forming and constituting
an improved drain-trap.
In carrying out my invention 1 utilize an ordinary earthenware inlet pipe which
forms and constitutes the trap or receptacle to catch or contain the seddiment or settlings
from the water flowing into the said trap, such pipes are formed with a curved outlet
passage at a suitable distance from the well or seddiment receptacle; the earthenware
pipe
herein before described is not a new invention. I will now proceed to describe in
what manner I alter the configuration of the earthenware pipe and in what manner I
combine therewith a hinged grating.
The earthenware pipe is usually formed at its upper edge of a right angular parallelo-
granic transverse section, about one inch from the edge of the inlet end a projecting
Hange is formed, on this flange is placed a movable grating; so far the arrangement
would be satisfactory if the grating was only removed for the purpose of emptying the
seddiment from the bottom of the trap, but the disadvantage of this old arrange
ment is that the iron grating can be removed permanently that is to say it can be
stolen.
To remedy the defects of construction herein before set forth I form in the side
walls of the upper edge of the parallelogramic section suitable openings forming
trunnion bearings. I provide a grating of any suitable horizontal pierced configuration,
on the edges of the grating 1 provide trunnions of suitable dimentions to fit in the
trunnion bearings formed in the walls of the earthenware pipe. I lower the grating
on to the ledges or projections provided to receive it, the trunnions being lowered into
the trunnion bearings.
I next provide a cap of suitable dimentions to cover the grating and also the pipe
that contains the grating; the cap would be pierced with an opening the dimentions
of which would be a trifle larger than the horizontal dimentions of the grating.
I

page_text: ower the cap over the inlet end of the earthenware pipe; it will now be readily
understood that the grating could be raised for the purpose of removing seddiment
from the bottom of the earthenware pipe, the grating when so raised could not be
removed or stolen because the trunnions would revolve in their slot bearings; the inner
surface or face of the cap would cover the inlets to the trunnion bearing; any attempt
to lift the grating wonld simply lift the trunnions until they beared against the under-
side of the cap, the cap would be secured in position by means of cement or by other
suitable means but as my improved trap would usually be surrounded with bricks, or
tiles, or such like substance, the bricks or tiles so surrounding the trap and pressing
against the outer surface of the vertical walls of the cap would retain the cap in position
over the grating in such a manner that the cap could not be removed without previously
removing the bricks tiles or other substance bearing against the outer surface of the
said cap.
I do not confine myself to making my earthenware pipe grating and cap of a right
angular parallelogramic configuration when viewed horizontally, as 1 may vary the
configuration without departing from the principle of my invention, namely the
trunnions resting in the slots such slots being covered by the cap.
ALF. WM. TURNER,
Cobden Buildings,
Corporation Street, Birmingham,
Agent for the Applicant.

page_text: I GEORGE DAVIS of Bradford Street Walsall in the County of Stafford Builders
Merchant 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 consists in the following arrangement of parts forming and constituting
an improved drain trap.
In carrying out my invention I utilise an ordinary earthenware inlet pipe which
forms and constitutes the trap or receptacle to catch or contain the sediment or
settlings from the water flowing into the said trap, such pipes are formed with a curved
outlet passage at a suitable distance from the well or sediment receptacle; the
earthenware pipe herein before described is not a new invention. I will now proceed
to describe in what manner 1 alter the configuration of the earthenware pipe and in
what manner I combine therewith a movable grating.
The earthenware pipe is usually formed at its upper edge of a right-angular
parallelogramic transverse section, about one inch from the edge of the inlet end, a
projecting flange is formed, on this flange is placed a movable grating; so far the
arrangement would be satisfactory if the grating was only removed for the purpose of
emptying the sediment from the bottom of the trap, but the disadvantage of this old
arrangement is that the iron grating can be removed permanently, that is to say it
can be stolen.
To remedy the defects of construction herein before set forth 1 form in the side
walls of the upper edge of the parallelogramic section, suitable openings forming
trunnion bearings, I provide a grating of any suitable horizontal pierced configuration,
on the edges of the grating I provide trunnions of suitable dimensions to fit in the
trunnion bearings formed in the walls of the earthenware pipe 1 lower the grating on
to the ledges or projections provided to receive it, the trunnions being lowered into the
trunnion bearings.
I next provide a cap of suitable dimensions to cover the grating and also the pipe
that contains the grating; the cap would be pierced with an opening the dimensions
of which would be a trifle larger than the horizontal dimensions of the grating. I
lower the cap over the inlet end of the earthenware pipe; it will now be readily
understood that the grating could be raised for the purpose of removing sediment from
the bottom of the earthenware pipe, the grating when so raised could not be removed
or stolen, because the trunnions would revolve in their slot bearings; the inner
surface or face of the cap would cover the inlets to the trunnion bearings; any
attempt to lift the grating would simply lift the trunnions until they beared against the
underside of the cap, the cap would be secured in position by means of cement or by
other suitable means but as my improved trap would usually be surrounded with bricks
or tiles or such like substances, the bricks or tiles so surrounding the trap and pressing
against the outer surface of the vertical walls of the cap would retain the cap in
position over the grating in such a manner that the cap could not be removed without
previously removing the bricks, tiles or other substance bearing against the outer
surface of the said cap.

page_text: I do not confine myself to making my earthenware pipe grating and cap of a right
angular parallelogramic configuration when viewed horizontally, as I may vary the
configuration without departing from the principle of my invention, namely the
trunnions resting in the slots, such slots being covered by the cap.
I will now proceed to describe with reference to the accompanying drawings the
manner in which my invention is constructed and used.
Figure 1 represents a side view of the earthenware pipe, ready to receive the grating
and cap.
Figure 2 represents a front view of figure 1.
Figure 3 represents a plan of the mouth of figure 1.
Figure 4 represents a plan of the grating.
Figure represents a side view of Figure 4.
Figure 6 represents a plan of the cap.
Figure 7 represents an edge view of figure 4.
Figure 8 represents a sectional end view of figure 6.
Figure 9 represents the trap, grate and cover connected.
a represents the slots provided to receive the trunnions. 6 represents the trunnions
provided on the grating.
In connecting the parts together I take the grating figure 4 and lower the trunnions b
into the slots a provided in the side walls of the inlet pipe or trap until the lower side e
of the front edge of the grating rests on the ledge & provided to receive it. I next
take the cap figure 6 and lower it over the outside face of the side walls of the drain
trap the horizontal flanges e would then rest over the slots.
In some cases I should secure the cap to the earthenware pipe by means of cement
or by means of a bolt or bolts passed through the cap and thence through the side walls
of the trap.
My improved drain trap put together in the manner hereinbefore described would be
ready for use.
In some cases instead of securing the cap by means of cement, or by means of
bolts or other mechanical equivalents 1 should deliver the trap and connections with
the cap placed loosely over the grating receptacle. The trap would then be connected
in the desired position and the cap secured over the grating by laying bricks, tiles
or such like substance against the vertical faces of the cap during the ordinary
process of paving the yard or other place where my improved drain trap was connected.
The grating receptacle, grating and cap are illustrated in accordance with one well
known configuration, but as herein before set forth I can vary the shape of the
grating, grating receptacle and cap without departing from the principle of my
invention.
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
1st. The invention as illustrated and described for the purpose described.
2nd. The combination of a trunnioned grating with a drain trap, in conjunction with
a cap, forming an hinged grating, as and for the purpose described.
Dated this ora day or September 1888.
.
ALF. WM. TURNER,
Cobden Buildings,
Corporation Street, Birmingham,
Agent for the Applicant.