improvements in Syphon water Traps.
Year: 1885

page_text: improvements in Syphon water Traps.
E
I, DAVID TENNANT of 356 Crown Street Glasgow in the County of Lanark
Plumber, do hereby declare the nature of the said invention for "IMPROVEMENTS
IN SYPHON WATER TRAPS" 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 improvements in syphon water traps and. one of the
said improvements has for its object to enable the trap to be connected to and
disconnected from the drain without disturbing the drain pipes or removing the
connecting sections of them from position as is otherwise necessary.
A further improvement has for its object to so construct the inlet side of the
pool or syphon part of the trap that by the falling action of the water passing from
the inlet part of the drain thereinto the washing out of any sediment or solid
matter lodged or which may tend to lodge in the bottom of the trap is more
effectually attained.
A further improvement has for its object to so connect the inlet part of the drain
to the trap that the inflowing water, falls direct from the drain pipe itself on to the
surface of the water on the inlet side of the pool without coming in contact with
the socket or faucet of the trap into which the said pipe is introduced.
A further improvement has for its object to impede the outflow of gas in blasts
or gusts from the trap at the time of flushing. The apparatus by which this is
accomplished also having the effect of preventing the inlet of solid matter through
the ventilating branch of the trap.
On the accompanying drawings figure 1 illustrates in vertical longitudinal
section a syphon water trap having the improvements constituting my said
invention applied thereto. Figure 2 is a front end elevation of the improved
trap; figure 3 a plan thereof; and figure 4 a vertical transverse section on the
line a, b, figure 1:
To enable the trap to be connected to and disconnected from the inlet section c,
and outlet section d, of the drain pipe without disturbing these sections in their
position and causing the joints of them with the next ones in the line of the drain
to be broken as is otherwise necessary when a trap is inserted after a drain has
been made the socket of the trap to which the section c, is connected is made in
two balves or parts e, el, as more particularly seen at figures 1 and 2 the lower part
or half e, being cast or formed on or made integral with the trap whilst the upper

page_text: part or half e¹, is loose and capable of removal when desired. Under this
construction when inserting the trap in position the upper part or cover e¹, of the
socket is taken off and the trap is lowered to its place with the tail or outlet
branch f, so elevated as to enable the lower half e, of the socket to be introduced
underneath the pipe c, The trap is then canted so as to cause the said half of the
Bocket to embrace the lower portion of the end of the pipe c, after which the upper
part or cover e¹, of the socket is placed on and it may be retained in position by
checking or rabbeting the inner end of it and the body of the trap as indicated
at g, figure 1, and the meeting edges of the lower and upper halves e, e¹, as
indicated at ; figure 2, or the upper and lower parts e, e¹ may be formed with lugs
or flanges as at i, figures 5 and 6 through which bolts may be passed to hold the
parts together or they may be otherwise secured.
The same form of connection is or may be adopted between the discharge
brauch f, and the pipe d, that is to say, the faucet of the pipe d, into which the
end of the branchf, is introduced is made in two parts as indicated at figures 1
and 7; the lower part or half j, of the faucet being made integral with the pipe
and the upper half or part k, separate therefrom.
Figure 8, is a side elevation and figure 9 an end elevation of the said
separate part.
By this means of connection access for cleansing purposes to the well or pool of
the trap both on the inlet and outlet sides may be obtained by removing the
covers e¹, and k, depressing the socket e, and elevating the branch f
As seen at figure 1, there being no widened part on the socket e, constituting a
faucet for the pipe c, the pipe can be and is introduced sufficiently far into the
socket to cause the water flowing from it to fall direct on to the surface of the
water in the inlet side of the trap without touching or coming in contact with the
Bocket or branch e.
Under a modification the socket or branch may be made in one piece instead of
in two pieces as before described and the pipe c, introduced so as to discharge
direct from its own end on to the surface of the water in the inlet side of the trap.
Under either mode the chance of leakago at the connection of the pipe with the
trap is obviated or lessened.
As shown by figures 2 and 4, the inlet side of the trap is V shaped or tapered
the narrowest part being at the bottom of the well or pool by which construction
the lodgment for sediment or solid matter is lessened and such matter is more easily
washed or cleansed out by the falling action of the water upon it. From the
bottom of 'the well or pool and in the direction of the discharge the trap is, as
indicated at n, figures 2, 3 and 4, again widened out to the same diameter as the
drain pipe d
When a flow of water down the pipe c, into the trap takes place it sometimes
happens that a gust or blast of gas is forced up the ventilating branch 1, and
discharged with considerable force at the grating o. To lessen or retard. this
discharge there is under this invention inserted into the upper end of the
ventilating pipe l, a conical or other shaped perforated vessel p, the holes in which
are arranged to discharge the currents laterally or horizontally. The discharge of
gas is in some degree retarded by the solid parts of the said vessel and the currents
passing through the perforated parts acting on each other likewise further tend to
diminish the discharge.
The vessel p, also serves the purpose of retarding or preventing the inward
passage of material tending to choke the trap and it' can be removed and cleansed
as desired by lifting the grating o.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
First. A syphon water trap having the inlet side of the pool or well made
1
conical inclined as V chonad and the branch in anobet connecting to the inlat nont

page_text: of the drain made in two pieces substantially as and for the purpose described and
shown on the appended drawings.
Second. In a syphon water trap so connecting the inlet part of the drain to the
trap that the inflowing water falls directly from the end of the drain pipe into
the pool or well of the trap substantially as described with reference to the
accompanying drawings.
Third. In the ventilating branch or pipe of a syphon water trap the employment
of a vessel to retard the outflow of gas and the inward passage of solid matter
substantially as described with reference to the drawings appended.
Dated this Bountrouth dow of TOOK