Improvements in Channel Bends and Junctions for Manholes.
Year: 1895

page_text: Date of Application, 20th Apr., 1895
Complete Specification Left, 20th Jan., 1896-Accepted, 7th Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in Channel Bends and Junctions for Manholes.
We GEORGE CROSS of 185 Kings Road Chelsea in the County of London
Builder's Merchant and WILLIAM HARRIMAN ALLEN of Fenkle Street
Newcastle-on-Tyne in the City and County of Newcastle-on-Tyne Manufacturer
of Sanitary Goods do hereby declare the nature of this invention to be as
follows:-
It consists of series of channel junctions made in various lengths on either, or
both sides, and at angles that will receive any channel bend of the same radius
and angle as now in general use, but these junctions are so designed that either of
them will fit accurately any of the bends such as A to D on the one side, and E
to H on the other, as shewn in the annexed drawing Sheet 1.
"
The present eystem now in general use, consists of straight channel pipes
forming the bottom of the manhole channel. Coming into these are a series of
bends known in the trade as "half and three quarter section channel bends
lettered from A onwards and more particularly shewn in the annexed drawing
Sheet 2 right hand side. In order to get a variety of radii, these are fitted to the
outer edge of the channel pipe.
This system of setting the channel bend on the edge of the manhole channel is
open to great objection such as causing the soil to splash and foul the cement-work
of the manhole, and the falling of the soil from the bend into the channel pipe
prevents a continual flow and fouls the bottom of the manhole.
By the adoption of the system of junctions in this invention, the splashing of
soil and consequent fouling of the manhole is avoided, a perfectly even and
uninterrupted flow from the pipe to the centre of the channel is obtained on a
gradual curve with a gradual fall from the mouth of the drain into the centre of
the channel with the certainty of the soil being carried away at once.
These junctions are so formed that they will receive any bend of any radius A
to H and are easily fixed.
The channels & bends are made deeper than half section bends, so as to obtain
the gradual fall of an inch from the neck near the socket of the bend to the centre
of the channel; the three quarter section bends become unnecessary but they can
be made for use if needed and fit the junctions as perfectly as the others.
The junctions and bends are adjustable, and designed to meet the requirements
of the construction or reconstruction of old or new drainage and are adjustable to
any length of chamber.
Dated this 2: th day of April 1895
GEORGE CROSS.
W. H. ALLEN.

page_text: •
improvements in Onannel Bends and Junctions or man
We, GEORGE CROSS of 185 Kings Road Chelsea in the Administrative County
of London Builders' Merchant, and WILLIAM HARRIMAN ALLEN of Fenkle
Street, Newcastle-on-Tyne in the County of Northumberland, Manufacturer of
Sanitary Goods 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 :-
In the system now in general use for forming and fixing bends and junctions
used in drainage and sewerage work straight channels are laid at the bottom of a
manhole or inspection chamber to, and through which, the drainage is conducted by
a series of bends known in the trade as "half and three quarter section channel
bends." In order to get a greater variety of radii these are fitted to the outer
edge of the channel pipe. This method is open to great objections as the soil in
passing will splash and foul the cement work of the manhole and the falling of the
soil from the bend into the channel pipe prevents a continual flow and fouls the
bottom of the manhole. By improvements in the form and contour of the bends
and by the use of a joint or junction specially made to recieve the end of the
bend, we provide a more perfect system obviating the splashing of soil and
consequent fouling of the manhole and giving an even and uninterrupted flow from
the pipe in the centre of the channel as a gradual curve with a gradual fall
from the mouth of the drain into the centre of the channel is obtained. The soil
is therefore carried away at once. In order that our invention may be better
understood we append drawings.
The improved channel junctious are made in the forms lettered V. W. X. Y. Z.
Q. P & O.
.
The improved channel bends are made in the forms lettered A. B. C. D. E.
F. G. Ha section of half bends being shown at C' and F and at A is a joint on
the junction to receive the end of the bend. In three quarter bends the top
portion of the lip is continued at the end as shewn at A and this lip by being
brought over the channel junction when fixed increases its efficiency. The
junctions are in various lengths on either or both sides as shown at O. P. Q. V.
X. Y. Z. and P with branches at angles that will receive any channel bend of the
same radius and angle as now in general use, but they are more particularly
designed to fit accurately the improved form of bends shewn at A to D and
E to H in the drawings.
These improved bends are slightly deeper than the ordinary form of "half
section" bend and are made and laid so as to obtain a gradual fall of one inch from
the neck near the socket of the bend to the centre of the channel. If desired three
quarter bends can be made and fitted but it is considered that the improved deeper
section of improved bends will obviate their use. The junctions are so formed
that they will receive any bend of any radius and the bends are made right and
left handed so as to be adapted for every possible combination. Both bends and
junctions are adjustable and are designed to meet the requirements of construction
or re-construction of old or new drainage. They are easily fixed, and may be used
in any length of chamber.
The drawings show the various forms of right and left hand bends (as also a
taper bend C) lettered A to D and from E to H inclusive and also single and
double junctions lettered V. W. X. Y. Z; Q. P. and O. A section of the bend is
shown at C¹ and F¹.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed what we claim is,
1. Channel bends of the form and section illustrated and described substantially
and as set forth.
2. Channel juuctions of the form and section illustrated and described.
substantially and as set forth.
3. The method and use of channel bends and junctions in combination for the
purposes indicated in the foregoing Specification; as illustrated and described
substantially, and as set forth.
JOHN BLACK,
Agent for Applicants.