Improved Drain Trap.
Year: 1896

page_text: Date of Application, 3rd Jan., 189:
Complete Specification Left, 30th Sept., 1896-Accepted, 2nd Jan., 1897
PROVISIONAL SPECIFICATION.
Improved Drain Trap.
I, JOHN WILLIAM MEARNS 16 Stewart Street Sunderland do hereby declare.
the nature of this invention to be as follows:-
1st. The trap is formed with stoneware.
My invention particularly secures in one trap, advantages which I believe have
never been previously obtained.
It is self cleansing, not being so deep as other traps in use and yet having.
sufficient water seal to prevent gas passing from the sewer to the building.
The flow of water and matter thro' the trap is unbroken, this is a most important
feature, as experience has taught me that wherever the flow is checked or broken
the gas rises to a very greatly increased extent.
The trap is designed to efficiently act in concert with the two gallon flush tank
in connection with waterclosets.
The trap is so constructed that it can be fixed in existing drains without reducing
the gradient, this is a most important feature, as most traps in use necessitate the
reduction of the gradient between the chamber and the house.
I have by experiments tested it practically and proved its efficiency in the-
foregoing respects.
The trap is formed in one piece of stoneware.
It is 3 feet 1 inches in length over all.
The inlet and outlet are at the same level, riz.: ten inches above the bottom or
base.
The water seal is three inches.
The trap has a firm and sufficient base 16 inches in length by 9 inches in
breadth, to ensure a true and even bed.
The trap is constructed so that the flow of sewage will meet with no impediment
to break its continuity.
Dated this First day of January 1896.
Improved Drain Trap.
JOHN WILLIAM MEARNS 16 Stewart Street Sunderland Drainage Inspector
to the Sunderland Corporation 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:-
1st. The improved drain trap is self cleansing, not being so deep as most traps
in use and yet having sufficient water seal "D" to prevent the gas passing from.
the sewer to the building.

page_text: 2nd. The flow of water and matter through the trap is unbroken; this is a
most important feature, as wherever the flow is checked or broken, the gas rises to
a very greatly increased extent.
3rd. The trap is designed to efficiently act in conjunction with the two gallon
flush tank in connection with waterclosets.
4th. The trap is so constructed that it can be fixed in existing drains without
interfering with the gradient; this is most important as most traps in use necessitate
the reduction of the gradient of the drain between the disconnecting chamber and
the house.
The trap is formed in one piece of stoneware.
It is three feet one and a half inches in length over all (see Figure 1. B to C).
The inlet and outlet are at the same level, viz. ten inches above the bottom or
base (see Figure 1. E to F).
The water seal is three inches see Figure 1. D.
The trap has a firm and sufficient base sixteen and a quarter inches in length by
nine & a half inches in breadth to ensure a true and even bed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what 1
claim is
The length being as shewn on Figure No. 1. B to C. 3 feet 1 inches with
water seal D, 3 inches.
2nd. That the construction of the trap will admit of a firm base "A"
Figures 1 & 2. on which to build the brickwork of a disconnecting or inspection
chamber.
3rd. That the inlet E. and outlet F. Figure 1. are at the same level.
Dated this Twenty-ninth day of September One thousand eight hundred and
ninety-six.
JOHN WILLIAM MEARNS,
16 Stewart Street, Sunderland.