Improvements in the Manufacture or Production of Kettles and other Hollow Boiling or Heating Vessels.
Year: 1892

page_text: Date of Application, 16th Apr., 1892
Complete Specification Left, 23rd July, 1892-Accept:d, 27th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture or Production of Kettles and
other Hollow Boiling or Heating Vessels.
I, GEORGE YATES COOPER of Woodcock Street in the City, of Birmingham,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to the manufacture or production of hollow boiling and
heating vessels, such for example, as kettles, saucepans, pots and other enclosed
or semi-enclosed hollow vessels made of copper, brass or other suitable metal or
alloy.
According to my method of manufacture, the body and top parts are made
seamless, and in one piece, whilst the bottom is inserted within an inner rolled part,
and there affixed by a closing process.
The body part is tapered from the top, or boundary edge of the top with the
sides towards the base, which is of smaller diameter to that of the other part.
By my method of production considerable economy is effected in the
manufacture.
In carrying out the manufacture of a copper or brass kettle according to my
invention, I proceed in manner following
A suitable sized disc is first taken, containing sufficient metal to form the top and
sides of the said vessel, then by shaping tools, or by dies and pressure, the said disc
is first shallow cupped, and then subsequently fuller cupped, and the diameter
reduced accordingly, by the passage, or passages of the said cup through drawing-
through tools.
The bottom of the cup is semi-domed or slightly flattened, and with the edges
between the bottom and the side fetched up sharp.
There is thus produced a cup, or a drum shaped hollow vessel, of the size of the
body of the vessel desired, and with the sides of the same parallel. By a spinning
process on a sectional or other chuck, the sides are taper spun towards the mouth,
which is much less in diameter, than at the junction of the said sides with the
semi-domed bottom.
The boundary edges of the open mouth part, are then turned slightly over, and
then inwards into a hooked beading or hooked flange, with the terminal edge of the
metal present innermost.
There is thus produced a vessel closed at bottom, and with the sides tapering
inwards towards the top, which is turned over into a flange, and then inwards into
a hooked means of connection, as hereinafter described.
The middle of the bottom is then pierced with a circular hole, and with the
boundary edge of it fitted with a spun in or roller over ring, beading or the
like made separate, and forming a seat or socket part for the lid, as hereinafter
described.
This vessel is then inverted and a separate bottom or disc fitted into or between
the rolled over edging of the open end, which as before formed the mouth, now
forms the base.
The separate bottom is fitted within the inwardly directed or over lying parts,
by like over-lying parts or hooked flange of the boundary edge of the said
bottom, engaging with, or hooking itself within that of the other, when by a
flattening process the two boundary edges are brought into close contact, and a
sound joint produced without soldering or brazing.
To make it clear as to the formation of the said joint of the bottom of the kettle;
in other words the part forming the bottom has a return flange, folded inwards
upon itself, which latter engages with a like return flange, at the turned over part

page_text: at the bottom of the vessel, hence the connection of the parts, and the production of
a sound joint by a flattening and closing process.
The spout is or may be affixed in the usual way, and so also is the handle part,
whilst the lid is produced by means commonly known.
The application of my invention to the production of saucepans or like vessels,
differs in no essential respect from that of making a kettle as described, other
than the fitting of a spout to the top or overhanging flange-part, to admit of
pouring.
Instead of connecting the bottom to the lower boundary walls of the sides, by
means as described, the said bottom and sides may be made all in one piece,
and with the top attachedly connected to the sides in the way described in respect
to the connection of the bottom.
Instead of producing the taper figure by spinning, the same may be produced by
back drawing through dies.
Dated this 14th day of April 1892.
GEORGE YATES COOPER,
By Henry Skerrett,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture or Production of Kettles and
other Hollow Boiling or Heating Vessels.
I, GEORGE YATES COOPER of Woodcock Street, in the City of Birmingham
Manufacturer 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 the manufacture or production of hollow boiling and
heating vessels, such for example, as kettles, saucepans, pots and other enclosed
or semi-enclosed hollow vessels, made of copper, brass or other suitable metal
or alloy.
According to my method of manufacture, the body and top parts are made
seamless, and in one piece, whilst the bottom is inserted within an edge-rolled part,
and there affixed by a closing process.
The body part is tapered inwardly from the top, or boundary edge of the top,
towards the base.
By my method of production considerable economy is effected in the
manufacture.
In carrying out the manufacture of a copper or brass kettle, according to my
invention I proceed as follows:-
A suitable sized disc is first taken containing sufficient metal to form the top
and sides of the said vessel, then by shaping tools, or by dies and pressure,
the said disc is first shallow cupped, with a flange, and then subsequently fuller
cupped, with a less flange, by further drawing through or cupping dies. This
is repeated until the desired depth is attained.
The bottom of the cup is semi-domed, or slightly flattened, and with the edges
between the bottom and the sides fetched up sharp.
There is thus produced a cup, or a drum-shaped hollow vessel, of the size of
the body of the vessel desired, and with the sides of the same parallel. By a
spinning process on a sectional or other chuck, the sides are taper-spun towards
the mouth, which is much less in diameter than at the junction of the said sides
with the semi-domed bottom. After the introduction of the bottom, the boundary
edges of the open mouth part are then turned over, and then inwards into a
hooked beading or hooked flange of the said introduced bottom.
The middle of the solid closed end is, subsequent to the putting-in of the
bottom, pierced with a circular hole, and with the boundary edge of the said

page_text: piercing fitted with a spun-in or rolled-over ring, beading or the like, made
eparate, and forming a seat or socket part for the lid, as hereinafter described.
This vessel is then inverted, and the pierced end, which as before formed the
solid end, now forms the top.
The interlocking hooked ends of the vessel and introduced bottom respectively.
are, by a flattening process, brought into intimate contact, and a sound joint is
thereby produced without soldering or brazing.
The spout is, or may be, affixed in the usual way, and so also is the handle part,
whilst the lid is produced by means commonly known.
The application of my invention to the production of saucepans or like vessels,
having inward and overhanging flanges, differs in no essential respect from its
application to the making of a kettle as described.
Instead of producing the taper figure by spinning, the same may be produced by
back drawing-through dies.
Figure 1 of the accompanying drawings represents a copper or brass kettle, made
according to my invention.
Figure 2 represents the disc from which the body is made.
Figure 3 is the first cupping process, Figure 4 is the second, Figure 5 is the third,
Figure 6 the fourth,
Figure 7 is the cupping and doming of the closed end, which subsequently forms
the top to the vessel,
Figure 8 is the piercing of the middle of the said closed end, and
Figure 9 is the contraction or gathering in of the mouth end.
Figures 10 and 10 show a part which forms the bottom when the vessel is
inverted, and which part has rolled over or open beading boundary edge of the
cross section of a hook. .
Figure 11 represents the said introduced bottom part in position, and lying upon
an internal support or section chuck, prior to the closing-in of the boundary edges
of the open mouth of the vessel.
Figure 12 represents the closed-in end parts pressed into intimate contact, hence
a sound joint.
Figure 13 is an enlarged view of the joint or seam.
Figure 14 is an underside plan of the body of the kettle, showing the infibulating
seam.
In making up the body part of a kettle or like vessel, I take a disc of sheet metal
Figure 2, and I middle cup the same into a shallow vessel Figure 3, with a
diameter a, equal to the diameter of the larger part of the vessel to be produced,
and with the flanges a², sufficient to form the other portions of the sides.
Then by subsequent stamping or metal fabricating tools, the flange cup
Figure 3, is then converted into that of Figure 4, and Figure 4 into that of
Figure 5, Figure 5 into that of Figure 6, which becomes a short cylinder,
closed at one end and without a flange at the mouth, and which short cylinder
is then domed at its closed end into the shape Figure 7, then by cutting-out
tools, the said closed end is pierced about its middle, as in Figure 8, and by a
subsequent spinning or shaping process or processes, the walls or sides are then
tapered, and reduced in diameter or gathered-in towards the full open end.
A section chuck or internal support is then introduced into the interior of the
body of the said vessel, but leaving a small space at the full open end or mouth.
The part or closure b, to form the bottom (Figure 10) with its curled or semi-
rolled-in edge b³, is then introduced into the full open end or mouth a', of the body
part u, and with the back side 63, of the bottom part or closure resting upon the
adjacent face c², of the section chuck c, (see Figure 11) when by a closing or
tucking-in process, the metal of the extreme boundary edge a³, of the walls a³, is
turned over and inwards, and then turned backwards under the annular hollow
beading 63, of the introduced closure b, producing an infibulating seam d, which is
then flattened, (see Figure 12) by pressure applied by the aid of tools.
The vessel thus produced is then inverted, (as in Figure 12) so that that part,

page_text: which formed the full open end, now forms the bottom, and that part which formed
the bottom of the stamping, cup or fashioned sinking, now forms the top a', of the
vessel, which is then finished by rolling or spinning over the cut out boundary
edge a, of the piercing a³, of the said top, a ring or inner edging e, which forms the
socket and seat for the lid.
The section chuck or inner support e, is removed prior or subsequent to the
adding to of the edging.
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 :-
First In tea kettles and other like hollow-ware or vessels in brass, copper, and
like ductile metals or alloys, making the shell body part, with top or crown, from
out of a sheet metal stamping, or an inverted sheet metal stamping or shell, having
an enclosed or semi-enclosed bottom, by making the bottom of the said sheet metal
stamping or shell, form the top or crown to the kettle or article produced, substan-
tially as described and set forth.
Secondly-In tea kettles and like hollow vessels in brass, copper or like ductile
metals or alloys, making the shell body part with top or crown, from out of a sheet
metal stamping, or an inverted. sheet metal stamping, or a sheet metal shell, having
an enclosed or semi-enclosed bottom, by making the said bottom of the said sheet
metal stamping or shell, to form the top of the vessel to be produced, and gathering
in or tapering the sides or walls of the said stamping or shell, so as to complete the
figure of the body of the vessel to be produced, substantially as described and set
forth.
Thirdly-In the bottoms of kettles or hollow vessels, affixing with the open
bottom of the said vessels, an introduced closure bottom or disc, by curling-in or
infibulating the boundary edges of the one part, with the rolled-over, or tucked-in
edges of the other part, hence an infibulated seam, substantially as described and
set forth.
Fourthly-The manufacture of the body parts of kettles and hollow vessels in
copper, brass or like ductile metals or alloys, by the means and processes as herein
described and set forth in the several figures of the drawings.
Dated this 90th day of July 1902.
GEORGE YATES COOPER,
By Henry Skerrett,
6, Livery Street, Birmingham, Agent for Applicant.