An Improved Form of an Access Bend for Connecting Soil and Waste Pipes at the Point of Junction to the Drains.
Year: 1896

page_text: Date of Application, 15th July, 1896.
Complete Specification Left, 15th April, 1897-Accepted, 26th June, 1897
PROVISIONAL SPECIFICATION.
An Improved Form of an Access Bend for Connecting Soil and Waste
Pipes at the Point of Junction to the Drains.
ANDREW HARKESS Sanitary Engineer 6 Wallis Place Easter Road Leith do
hereby declare the nature of this invention to be as follows:-
An access bend for drains to be formed of fire-clay, cast iron or any other material.
This bend has been designed with a view to give immediate access to the drain &
pipes in the event of chokage or inspection also to admit of a proper junction being
made of the pipes to the drains.
It is formed similar to that of the ordinary square bend, having an additional pipe
with faucet of reduced diameter branching off from the upright part of the said bend
at an angle of 4" on 12", or any angle that may be required the additional branch
receiving the soil or other pipes at the junction to the drain. The upright opening is
thus left to give access to the drains when required.
Thirteenth day of July 1896
An Improved Form of an Access Bend for Connecting Soil and Waste
Pipes at the Point of Junction to the Drains.
ANDREW HARKESS Sanitary Engineer 6 Wallis Place Easter Road Leith 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:-
An access bend for drains to be made in fire-clay, cast iron or any other suitable
material. The bend is formed similar to that of the ordinary drain bend, as shown at
A and B Figure one having additional branch pipes one half inch less diameter than
the bend A. B with faucets to receive soil, waste or other pipes which branches off
from the bend at the points marked C and D, at an angle to receive pipes having a
fall of about one inch on three. The branch C Figure one may be formed to any
other angle that may be required, until the faucet of said branch is in line with the
faucet A of the bend, A. B. as shown at F Figure two. The novelty of this access
bend is in the additional branch pipes, which branch off from the bend as already
described, one, two or three soil (or other) pipes can be connected to the branch pipes
on the bend. The upright opening permits of immediate and easy access to the drain,
or the ends of the soil or waste pipes at the point of junction to the drain, for the
purpose of inspection. The application of cane rods as well as the removal of an
obstruction in the case of a choke. The drains soil and waste pipes can be tested
separately with smoke, air, or other charges, and defects if any can be at once
localized, thus saving a considerable amount of time and expense.

page_text: It also prevents the drain being laid too near the surface, the top of the drain pipe
at the junction of the bend cannot be laid to have less than ten to twelve inches of
earth (or other) covering over the said drain.
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 I do
claim is,
That portion of the bend which forms the inlet branch pipes to the said bend, as
shown at C and D in Figure one and two.
Dated thi Tich
11007
ANDREW HARKESS.