Year: 1898

page_text: I, ARTHUR BENTALL COLLIS, West Quay, Southampton, in the County of Hants,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to watertube boilers, and consists of improvements herein-
after described.
In making a boiler according to my invention the base of same is in the form
of a circular ring in plan, and the cross vertical sectional shape of the ring-
taken on any line radiating from the centre is triangular, or approximating
thereto, the whole forming a complete chamber.
Above this chamber I mount centrally with same on suitable supports-resting
on and connected to the base of boilera closed cylindrical vessel with rounded
top and bottom corners and a more or less cone shaped bottom with the apex
pointing downwards.
A suitable manhole is provided in this upper chamber. When the two aforesaid
chambers or vessels are fixed in position the inside sloping face of the lower
chamber will lie practically parallel with the tapered bottom of the upper chamber,
and tubes will be fitted between the bottom of the upper chamber and inside face
of lower chamber, in number as desired, each tube entering the two chambers
approximately at right angles to the tube plates.
The whole will be enclosed in a metal casing with funnel on top and a furnace
door at base, and other doors as required; firebars will be fitted covering the
circular opening at the bottom of the lower chamber the fire passing about and
around the tubes and upper chamber, the products of combustion discharging
through the funnel at top of casing.
Suitable removable covers will be provided on the outside of the lower chamber
to allow of examination of interior of chamber and the tubes, without otherwise
disturbing the boiler or parts thereof.
In use, the upper and lower chamber will contain water, also the tubes, the
level of the water in the upper chamber will be kept slightly above the top of
tubes.
Tinted th: 20+1
of Tune 1900

page_text: I, ARTHUR BESTILALL COLLIS, of West Quay, Southampton, in the County of Hants,
Engineer, 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:-
My invention relates to watertube boilers, and consists of improvements herein-
after described.
In the accompanying drawings I have shewn what I consider to be the best
means of carrying out my invention, in which;-Fig. 1 is a vertical elevation of
my improved boiler, the part on the right hand side of the middle line a, a, being
shewn in section taken on the line b, b, the other part on the left hand side shew-
ing a front outside view.
Fig. 2 shows on the right hand side of the middle line a, a, a part plan at, and
below the line c, c, and on the left hand side a part plan on top, the uncompleted
parts in plan of the whole being uniform in arrangement with the part plans
shewn.
In making a boiler according to my invention the base A of same is in the
shape of a complete circular ring in plan in which is formed a complete circular
chamber B. Above the base I mount and support centrally with same a cylindrical
vessel, or chamber (, with rounded top and bottom corners, and a more or less
cone shaped bottom, with the apex pointing downwards.
Suitable hand or manholes are provided in the chamber C, and a removable dome
shaped cover ] on top. When the aforesaid chambers or vessels B, and C, are
fixed in position, the sloping top part of the lower chamber will lie practically
parallel with the tapered bottom of the chamber C, and the water tubes D', 1)',—
in number as required and arranged as shewn, or in similar manner, will enter
the two chambers practically square to the tube plates.
Hand or manholes E, E, will be provided at convenient distances apart, in the
outside of the chamber B, over which will be fitted watertight removable covers
which can be removed at will to allow of the examination and repair of the inside
of the chamber, and the lower end of the tubes D'.
Should it be required to remove the tubes 11 for the purpose of repair or renewal,
the cover can be removed, and the tubes drawn, without in any way disconnect-
ing the other parts of the boiler.
The firebars will be fitted in the space F, the fire passing about and around the
tubes and upper chamber. The whole will be enclosed in a metal casing with
funnel on top and a furnace door in the side of the casing, the products of com-
bustion being discharged through a funnel at the top of the casing.
In use, the upper and lower chambers will contain water, also the tubes, the level
of the water in the upper chamber will be kept slightly above the top of the tubes.
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:
1st. The improved watertube boiler consisting of the parts all constructed,
arranged, and combined, substantially as described, with reference to the accom-
panying drawings, and operating as, and for the purposes above specified.
2nd. The watertube boiler described, with the tubes of same entering the lower
and upper chambers B, and C, and tube plates, square or nearly so, as herein
specified.

page_text: 3rd. The watertube boiler described, having a removable cover 1 on the top of
the upper chamber C, and hand or manholes in the outside of the lower chamber B,
with removable covers E, E, to same to allow of the ready examination
and renewal of the water tubes D', D', as herein specified.
Dated this 27th day of March 1899.
and
ог
removal
ARTHUR BENTALL COLLIS.
Herbert 1'. Blake,
Chartered Patent Agent, 70, High Street, Southampton,
Agent for the Applicant.