Improvements in Compensating Rings for Use in connection with Man Hole Covers and Hand Hole Covers in Steam Boilers and the like.
Year: 1894

page_text: Date of Application, 6th June, 1894
Complete Specification Left, 6th Mar.. 1895-Accepted, 4th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in Compensating Rings for Use in connection with
Man Hole Covers and Hand Hole Covers in Steam Boilers and
the like.
I, JOHNSON MILLS, of Chapel Street, Salford, in the County of Lancaster,.
Engineer, do hereby declare the nature of this invention to be as follows:-
The
This invention relates to compensating rings that are affixed to boilers and the
like, for the purpose of forming a seating for man hole and other covers.
object of this invention is to obtain in wrought iron or wrought steel, a form of
ring such as is ordinarily constructed of cast metal, and which would be difficult
and expensive to produce by ordinary forging.
In this invention I form a ring from a bloom of steel or iron: I construct dies.
of the shape of the ring required and in which rebates are formed in the side
edges: I press the aforesaid steel or iron bloom ring in the dies herein described
and thereby produce a ring as a with projections & formed on the inner side thereof,.
and also 61 on the outer side if required.
In the accompanying drawing, a transverse section is shown of a compensating
ring a constructed according to my invention in the manner herein before described
fitted to a boiler c, and with a man hole cover d attached by a clamp or clamps e,
the ends of said clamps resting on the projections 6: a thin metal plate may be
laid over the clamps and flush with the inner surface of the boiler in the same
manner as when cast metal rings are employed.
The hereinbefore described compensating rings may be formed with an extension
on one or both sides for the purpose of strengthening the front plate of the boiler
if desired.
Dated this 4th day of June 1894
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Compensating Rings for Use in connection with
Man Hole Covers and Hand Hole Covers in Steam Boilers and
the like.
I, JOHNSON MILLS of Chapel Street, Salford, 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 :-
This invention relates to compensating rings that are affixed to boilers and
the like for the purpose of forming a seating for man hole and other covers. The
object of this invention is to obtain in wrought iron or wrought steel a form of ring
which would be difficult and expensive to produce by ordinary forging.

page_text: I attain this object by the means that are hereinafter described, and as shown in
the accompanying sheet of drawings, in which Fig. 1 is a transverse section showing
my improved ring applied to a boiler in combination with a man hole cover, and
Fig. 2 is a plan of the same.
In these views similar letters refer to similar parts.
In this invention I form a ring with projections thereon from a bloom of steel or
iron by constructing dies of the shape of the ring required, and in which rebates.
are formed in the side edges: I press the aforesaid steel or iron bloom ring in the
dies herein described and thereby produce a ring as a with projections 6 formed on
the inner side thereof, and also 6' on the outer side if required.
In the drawing a compensating ring is shown constructed according to my inven-
tion in the manner herein before described, and fitted to a boiler c and with a man hole
cover d attached by a clamp or clamps e the ends of said clamps resting on the
projections ba thin metal plate may be laid over the clamps and flush with
the inner surface of the boiler in the same manner as when cast metal rings are
employed.
The hereinbefore described compensating rings may be formed with an extension
on one or both sides for the purpose of strengthening the front plate of the boiler
if desired.
Having now particularly described and ascertained the nature of this my said
invention and in what manner the same is to be performed I declare that what
I claim is:
In compensating rings that are employed in connection with man hole covers and
hand hole covers in steam boilers and the like, the formation and construction of
said rings with projections as band b¹ in the manner and for the purpose substantially
as herein before described.
Dated this 5th day of March 1905
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for Applicant.
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for Applicant.