Year: 1877

page_text: We the Company carrying on business as KIRKHAM HULETT and CHANDLER
Limited, of Palace Chambers, Bridge Street, Westminster, seek leave to amend the
Specification and Drawings of Letters Patent N° 422 of 1877 as shewn in red ink
in the copy of the original Specification hereunto annexed and marked with the
letter A
Our reasons for making this amendment are as follows .-
The Specification describes and claims more than, having regard to the state of
knowledge at the date of the Patent, the Patentees were entitled to claim as their
invention. The description and drawings also require slight corrections to be
made in order that the invention may be more clearly explained.
Dated the 15th Febenow 1881
G. F. REDFERN,
Agent for the Patentees,

page_text: In the matter of Letters Patent granted to Thomas Nesham Kirkham, David
Hulett, Samuel Chandler Junior, and Josiah Chandler for the invention of
Improvements in apparatus for the purification of gas" dated the 1ª day of
February 1877 No 422
"
AND
In the matter of the application made by Mess" Kirkham, Hulett & Chandler
Limited for-leave to amend the Specification filed in pursuance of the said Letters
Patent.
In the matter of the Oppositions of Messra Laycock & Clapham, Box & Waller,
and C & W Walker, respectively thereto.
I allow the whole of the proposed amendments on page 1, with the exception of
the words "disional plates" which occur in the sentence proposed to be inserted
after the word "horizontally' on line 13 of page 1, but I have no objection to the
word "divisions" being substituted therefor
"
"
2
I also allow the proposed amendments on page 2, down to and including the
twentieth line, with the exception of the substitution of the word desired" for
desirous" on line 9, which latter word must stand as in the original Specification
I also allow the Drawings to be lettered & numbered as proposed and Figures 4
& 5 to be cancelled
I refuse to allow the addition of the words proposed, after the word "but" on
line 25 page 2, as I am of opinion that (if allowed) such addition would make the
Specification claim an invention substantially larger than on substantially different
from the invention claimed by the original Specification.
T.: 18th dow of Tul, 1904
H. READER LACK,
Comptroller General

page_text: LETTERS PATENT to Thomas Nesham Kirkham CE of 21 Abington Street
Westminster David Hulett of 55 and 56 High Holborn Gas Engineer and
Samuel Chandler Junior and Josiah Chandler both of 104 Newington
Causeway in the County of Surrey Gas Engineers for an Invention of
"IMPROVEMENTS IN APPARATUS FOR THE PURIFICATION OF QAQ”
COMPLETE SPECIFICATION filed by the said Thomas Nesham Kirkham, David
Hulett, Samuel Chandler Junior and Josiah Chandler at the Office of the
Commissioners of Patents on the 1st February 1877.
THOMAS NESHAM KIRKHAM CE. of 21 Abington Street Westminster DAVID
HULETT of 55 and 56 High Holboin Gas Engineer and SAMUEL CHANDLER Junior
and JOSIAH CHANDLER both of 104 Newington Causeway in the County of
Surrey Gas Engineers "IMPROVEMENTS IN APPARATUS FOR THE PURIFICATION OF
GAS
"
This Invention has for its object Improvements in appaintus for the purification
of gas and relates more particularly to an improved "washer or scrubber" for the
purpose of condensing washing and punifying the gas an or vapour.
The invention consists of a vessel of cylindrical or other convenient form placed
either horizontally and divided as hereinafter described by divisions varying in
height, or vertically into this vessel is fitted a shaft working in bearings of
stuffing boxes, attached to this shaft is a selles of concentric tubes leaving
sufficient spaces between for the gas to pass through, this shaft may be is made
to revolve or-not-as-may-be-required
These tubes may be made of plain or perforated metal wood or other suitable
material or woven wire may be used.
We do not bind ourselves to concentric tubes as the same object can be attained
by using sets of tubes attached to the shaft with spaces between them for-the gas
to-pass or by a volute, or by louvies placed either-horizontally-or-vertically
The invention will be better understood by reference to the accompanying
drawings.
Figure 1 shews a longitudinal section of the apparatus, the The letter A
indicates the shaft with driving pulley; to this shaft is are attached sets of
concentric tubes marked B, C, C, shews spaces between these tubes for the gas to
pass through; DD represents spaces between each set of tubes, E are louvres
placed between the sets of tubes, Figure 2 shews a section on line F F of
figure 1, Figure 3 shows the volute form and Figures 4-5 and 6 the louvres,
horizontal-and-vertical Figure 7 the a corrugated form of tubes, Figure $ 5 shews
an end section of a combination of tubes of any length and diameter desired
Figure 9 4 shews a longitudinal section of the outer vessel I, and-the-No. 1 2. 3
and 4 are divisions each varying in height to cause the fluid to overflow from 1 to 4
so that the gas from the let K entering at 4 in the direction shewn by the arrows

page_text: in figure 1, meets the strongest liquor which gradually decreases in strength to
No 1 which is desirous it being advantageous to get the gas to leave at a point
where it can meet water as fice from ammonia as possible, G shews partition
plates as also shewn at Figure 2, the The clean water to supply the vessel may
enter as near the gas outlet J as convenient, the The letters H shew outlets for
drawing off the liquor when required, quer. the The flow of gas will be
understood by the airows on Figure 1
The action of the apparatus is as follows.-
The whole of the concentric tubes, volutes, louvres or their equivalents attached
to a shaft A are caused to revolve by means of steam or other power and the vessel I
being charged with water or other liquid to the requned height, the whole of the
aforesaid tubes or their equivalents become wetted and the fact of the gas air o
vapour having to pass through the spaces in and between the tubes or their
equivalents on its way to the outlet J, it therefore comes into contact with the
wetted surfaces referred to
Having thus described the manner in which our invention is carried into effect
we wish it to be understood that we do not limit ourselves to the precise details
herembefore described as the same may be vaned without departing from the
nature of our said invention but what we do claim as our Invention is the
improved washer or scrubber arranged as and for the purposes herein described
and set forth.
In witness whereot we the said Thomas Nesham Kukham, David Hulett,
Samuel Chandler and Josiah Chandler have hereunto set our hands and seals this
Thirty first day of January in the year of our Lord One thousand eight hundred
and seventy seven.
THOMAS NESHAM KIRKHAM (1 s.)
(L
DAVID HULETT
(LS)
SAMUEL CHANDLER JUR
(LS)
JOSIAH CHANDLER
(LS)