Improvements in Water-tube Steam Generators.
Year: 1889

page_text: Date of Application, 31st Dec., 1889
Complete Specification Left, 27th Sept., 1890-Accepted, 1st Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Water-tube Steam Generators.
I, JOHNSON MILLS, of Broome Hill, Prestwich, near Manchester in the County
of Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in water-tube steam generators and
particularly to the mode of connecting the front headers or front slabs to the front
ends of the steam and water drums and the chief objects of my improvements are
to secure free and unimpeded circulation and improved separation of the steam from
the water.
In carrying my improvements into effect I form a pocket preferably in one piece
with the front end plate of the steam and water drum in a manner substantially the
same as that described in the Specifications to my former Patents Nos. 12545 of 1888
and 11488 of 1889. This pocket is formed or secured on the upper side of the front
end plate so that the delivery is above the level of the water in the drum.
The front headers or, slabs are connected to this pocket by nipples, a single nipple
or two or more nipples being employed for each header.
The chief advantages of this improved mode of connection are that the steam and
water conveyed upwards through the front headers or slabs are delivered in the
steam and water drum at a point above the water level whereby the steam readily
separates from the water and dry steam is obtained.
Dated this 30th day of December 1889.
H. B. BARLOW,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Water-tube Steam Generators.
I, JOHNSON MILLS, of Broome Hill, Prestwich, near Manchester, in the County of
Lancaster, 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 improvements in water-tube steam generators and
particularly to the mode of connecting the front headers or front slabs to the front
ends of the steam and water drums and the chief objects of my improvements are to
secure free and unimpeded circulation and improved separation of the steam from the
water:
+
In carrying my improvements into effect I form a pocket preferably in one piece
with the front end plate of the steam and water drum in a manner substantially the
same as that described in the Specifications to my former Patents Nos. 12545 of 1888
and 11488 of 1889. This pocket is formed or secured on the upper side of the front
end plate so that the delivery is above the level of the water in the drum. The front
headers or slabs are connected to this pocket by nipples, a single nipple or two or
more nipples being employed for each header.
And in order that my invention may be fully understood and readily carried into
effect I will describe the accompanying sheet of drawings reference being had to the
figures and letters marked thereon.
The drawing is a side elevation of a water-tube steam generator fitted with my
improvements.
In this view, a designates the steam and water drum, 6 the rows of inclined water-
tubes, e the front and d the back headers or slabs, e the pocket made preferably in one

page_text: piece with the front end plate f according to my present improvements and connected
to the front headers or slabs c by short circulating pipes or nipples g, the delivery or
discharge opening between the pocket e and drum a being at a point above the water
level in said drum.
•
The chief advantages of this improved mode of connection are that the steam and
water conveyed upwards through the front headers or slabs care delivered in the
steam and water drum at a point above the water level whereby the steam more
readily separates from the water and dry steam is obtained.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
In a water-tube steam generator the combination with the front end plate of the
steam and water drum, of a pocket connected by short circulating pipes or nipples
to the front headers or slabs and so arranged that its delivery or discharge opening
is above the level of the water in the steam and water drum substantially as and for
the purposes herein described and as illustrated by the drawing annexed.
Dated this 96th day of September 1800
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicant.