IMPROVED APPARATUS FOR PREVENTING INCRUSTATION IN STEAM BOLLERS
Year: 1871

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine,
Lake, & Co., Patent Agents, Southampton Buildings, London, for
the Invention of "IMPROVED APPARATUS FOR PREVENTING INCRUSTATION
IN STEAM BOLLERS.”—A communication from abroad by James
Perkins, of Baltimore, Maryland, United States of America.
Sealed the 14th July 1871, and dated the 16th May 1871.
5
COMPLETE SPECIFICATION filed by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition
and Declaration, on the 16th May 1871, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send greeting.
5
COMPLETE SPECIFICATION filed by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition
and Declaration, on the 16th May 1871, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVED
APPARATUS FOR PREVENTING INCRUSTATION IN STEAM BOILERS," and have

page_text: petitioned Her Majesty to grant unto me, my executors, administrators,
and assigns, Her Royal Letters Patent for the same, and have made solemn
Declaration that it has been communicated to me from abroad by James
Perkins, of Baltimore, Maryland, United States of America.
NOW KNOW YE, that I, the said William Robert Lake, do hereby
declare that the following Complete Specification, under my hand and
seal, fully describes and ascertains the nature of the said Invention,
and in what manner the same is to be performed in and by the following
statement, reference being had to the accompanying Drawing forming
a part of this Specification:-
My improvements relate to an apparatus or device for preventing the
scaling or incrustation of boilers. It consists in the peculiar con-
struction of one or more blow-off pipes for blowing out the scum or
foam in the boiler that has been found to contain the ingredients and
parts from which the scale or incrustation is formed.
DESCRIPTION OF THE DRAWING.
Figure 1 is a longitudinal section of a marine boiler showing my
Invention applied to the same; Figure 2 is a longitudinal section of
the pipe; Figure 3 is a cross section of the same; Figure 4 shows a
modification of the said pipe; Figure 5 is a view of a crescent pipe.
Like letters refer to like parts throughout the Drawing.
A represents a marine boiler of the ordinary construction provided
with horizontal flues, furnaces, steam chimney and up take. Over the
flues and level with the water line commonly adopted in such boilers I
suspend from the top of the boiler by two or more braces or supports a, a¹,
the pipe B and connect it at one end to a check or blow valve C. This
pipe I preferably construct in a hexagonal form, as shown in Figure 3,
(or if preferred it may be round and hexagonal at certain intervals),
and in several lengths, jointed or screwed together. The object in
making its exterior hexagonal being that the different lengths may a
be easily taken apart by a wrench for the purpose of cleaning or
replacing any length thereof that may have become defective or injured.
It may however be of any other number of sides found desirable, or of
the form shewn in Figure 4. The pipe B is perforated with a number
of small holes b; the scum enters these holes and is blown off through
the valve C, Figure 1, which is always open when the boiler is in use.

page_text: on all sides in combination with the blow valve C, constructed and
operating as herein described and for the purpose set forth.
In witness whereof, I, the said William Robert Lake, have here-
unto set my hand and seal, this Sixteenth day of May, in the
year of our Lord One thousand eight hundred and seventy- 5
one.
Witness,
E. C. JACKSON.
WILLIAM ROBERT LAKE. (L.8.)