IMPROVEMENTS IN TRAPS FOR PREVENTING THE ESCAPE OF FOUL AIR AND GASES
Year: 1872

page_text: LETTERS PATENT to David Dunne Kyle, of 6, Victoria Street, West-
minster, for the Invention of "IMPROVEMENTS IN TRAPS FOR PREVENTING
THE ESCAPE OF FOUL AIR AND GASES."
Sealed the 10th October 1872, and dated the 12th April 1872.
PROVISIONAL SPECIFICATION left by the said David Dunne Kyle at
the Office of the Commissioners of Patents, with his Petition, on the
12th April 1872.
I, DAVID DUNNE KYLE, of 6, Victoria Street, Westminster, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN TRAPS FOR
PREVENTING THE ESCAPE OF FOUL AIR AND GASES," to be as follows:-
My Invention has reference to the class of traps which consist of
pipes or tubes vertically bent, so that water or other fluid remaining in
the bends prevents the escape or passage of foul air or gases through
them, and it consists,―
First. In making the bend or bends moveable longitudinally to the

page_text: r
attached to or form part of the fixed line of pipe or tube, so that the
bended part can be changed from a vertical to a horizontal position when
any discharge of matter is required through it, and again restored to the
vertical position to act as a trap when the matter has been discharged.
Second. In enclosing when required the moveable bend or bends in
an air-tight or water-tight case or chamber attached to the fixed pipe
or tube, so as to allow of the play or working of the moveable bended
pipe within it, which would be wrought by any ordinary means from the
outside; and also in filling this case when required with oil, water, air,
or other fluid to prevent the escape of foul air or gases from the joints
or sockets of the pipes or to lubricate the same when necessary, or the
case may extend to a height sufficient to allow the escape of foul air
or gases from the joints or sockets with safety, or a tube may be carried
upwards from the case for that purpose.
Third. In the use of more than one bend to the trap when required
so that one bend would stand vertically upwards and another downwards
when in action.
42
the 'buan 'mhan necessary in a horizontally inclined
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said David Dunne Kyle in the Great Scal Patent Office
on the 12th October 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME I, DAVID
DUNNE KYLE, of 6, Victoria Street, Westminster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing dato the Twelfth day of April, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said David Dunno Kyle, Her special licence that
I, the said David Dunne Kyle, my executors, administrators, and assigns,
or such others as I, the said David Dunne Kyle, or my executors, admi-
nistrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
s

page_text: Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN TRAPS FOR
PREVENTING THE ESCAPE OF FOUL AIR AND GASES," upon the condition.
(amongst others) that I, the said David Dunne Kyle, my executors or
administrators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the
said Letters Patent..
NOW KNOW YE, that I, the said David Dunne Kyle, do hereby
declare the nature of my said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in
and by the following statement, reference being had to the accom-
panying Drawings, and to the letters marked thereon, the same letters
on Figures 1 and 2 indicating the same parts of the trap, that is to
say:―
My said Invention relates to an improved construction and arrange-
ment of traps for preventing the escape of foul air or gases, so as more
effectually and readily to allow of the discharge of matter through
them.
Figure (1) on the accompanying Sheet of Drawings shows a sido
elevation of this improved trap when in action for proventing the escape
of foul air or gases, and in this position is similar to the syphon traps
in common use; Figure 2 is an end clevation of the same showing the
position of the bent tube or syphon when in position for the dischargo
of matter.
A is the bent pipe or syphon which may be made of cast or wrought
metal or other material; B is a plate of cast iron or other suitable
material, on which are cast or fixed the two brackets b, b', these having
a circular hole in each of the same diameter as the bent. pipe or syphon;
C is the outlet, which consists of a short length of pipe cast on the
bracket b, as in the Drawing, or it may be attached in an ordinary
manner, or may if necessary be dispensed with and the drain pipe itself
attached; D is the inlet to the trap, which can be cast on tho bracket
or attached thereto by any ordinary means, and in the Drawing is
shown as arranged for connection with the pan of a watercloset, or
the part D could be dispensed with, and in this case the pan formed
so as to be attached to the bracket b'. These two short pipes C and D

page_text: have thus no motion, and with the bed plate B and brackets b, b¹, are
fixed immoveably to the floor framing or base in which the trap works.
E and F are two collars or hollow bearings in and around which
respectively the syphon or bent pipo works, these are attached to the
brackets b, b', by bolts so as to admit of the adjustment of the syphon
when being placed in connection with tho fixed parts described above.
These collars or bearings are of metal bored, turned, or fitted to work
water and gas-tight with the ends of the syphon or bent tube A; theso
ends of the syphon are also to be bored, turned, or fitted to work with
the collars E and F, and where the material of the syphon does not
admit of such fitting it would be necessary to apply a metal surfaco
to it for that purpose. It would be preferable that its end at E should
have a ring on it externally, and that at F to be bushed internally,
The boring, fitting, or turning of the syphon must be carried out at both
ends in relation to the centre line of axis which must pass through
the centre of the collar bearings E and F so as to admit of the true
working of the syphon. In placing these the two collars are to be put
on the respective ends of the syphon and then placed between the two
brackets b, b', and so adjusted that the ends of the syphon shall be
opposite to the circular openings in the brackets b, b, and then fixed
by bolts to theso with the necessary cement or packing. Where it is
necessary to make greater provision against leakage of water or gas
through the joints at E and F a groove or channel is cut in the centro
line of the circumference of the bearings E and F and also in the syphon
at both ends to correspond. Apertures in connection with these lead
into tubes so that the water and gases may escape before reaching the
outer margin of the joints, these tubes to be run off, that from E to the
open air, that from F to the outlet pipe. The lowering or raising of
the syphon A is effected by a rocking lever G which works between two
supports standing on the bed plate B, the upper end of this is forked
so as to hold within its arms the syphon A; the lower end has a toothed
segment 1 attached to it, into this a toothed bar I works after the
manuer of a rack and pinion, the bar I being weighted at the lower end
and having a handle at the upper as when used for a watercloset. By
pulling up this handle and bar I the forked lever depresses the syphon A
to the necessary level, and when the bar is released the weight restores
the syphon to its vertical position. A wire and pulley would also effect
this, and in some cases the hand alono will sufficiently work the
apparatus. As the syphon acts as a trap either above or below tho

page_text: horizontal line, the arrangements for raising or lowering it would be
modified accordingly.
Where more bends of pipes or syphons than shown or described
herein are required their construction can be effected from the description
of the above working parts.
When it is desirable to place the whole apparatus in a water-tight or
air-tight case the bed plate B and the brackets b, b¹, will form the
bottom and sides or ends of the case, so that after the syphon with its
bearings has been inserted a cover is cemented and bolted over the
whole, so as not to admit any escape of water or gases. The working
of the bar I is in this case easily effected through a stuffing box. If the
case is filled with water or other fluid a cock is inserted to allow of
drawing off and replenishing the water or other fluid. Where the trap
is placed in a chamber of brickwork, or in any similar position, these
appliances will be varied accordingly.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which the same is or may be used
or carried into effect, I would observe in conclusion that I do not
confine or restrict myself to the precise details or arrangements which
I had occasion to describe or refer to, as many variations may be made
therefrom without deviating from the principles or main features of my
Invention; but what I consider to be novel and original, and therefore
claim as the Invention secured to me by the herein-before in part recited
Letters Patent is, the general arrangement and construction of a
bent pipe or syphon trap working from a vertical to a horizontal or
inclined position and returning to a vertical, so that after the matter to
be discharged is gone the syphon again acts as a trap, the vertical
position being either elevated or depressed above or below the horizontal
line.