IMPROVEMENTS IN THE MANUFACTURE OF SAUCEPANS, STEWPANS, OR OTHER CULINARY VESSELS
Year: 1884

page_text: We JAMES WATT PERKINS and RICHARD WOODHOUSE PERKINS trading as
B. Perkins and Son, Tin Ware Manufacturers, 133 Bermondsey Street, Southwark
in the County of Surrey do hereby declare the nature of our Invention for
"IMPROVEMENTS IN THE MANUFACTURE OF SAUCEPANS, STEWPANS, OR OTHER
CULINARY VESSELS" and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:-
This Invention has for its object, improvements in saucepans, stewpans or other
culinary vessels and consists in stamping the vessels and consists in stamping the
vessels out of thick sheet steel while cold to almost the desired shape and
completing the process in such a manner that with great facility and economy we
obtain the vessels of the desired shape seamless throughout and with vertical or
nearly vertical sides.-Hitherto no saucepans, stewpans or other culinary vessels
of like description have ever been stamped out of steel without seam, neither has
the particular process of manufacture hereinafter described been applied for this
purpose, for which we find it peculiarly adapted and suitable.
Our Invention refers more particularly to the process of manufacture which we
will now proceed to describe by aid of the accompanying Drawings in which
Figure 1 shows the die and stamp or plunger and apparatus used during the cold
stamping process. Figure 2 is the die and stamp or plunger used for the hot
stamping process hereinafter described. Figures 3 and 4 show completed saucepan
and stewpan, such culinary vessels may obviously be of any desired diameter and
height.
Like letters indicate the same parts in all of these Figures.
In carrying our Invention into practise we place the cold sheet of thick steel A
in a recess formed for the purpose upon the die B. in which position it is firmly
held by the pressure plate C. which is attached by bolts and nuts to D. and
connected with the eccentric E so that at each action of the machine C. and D.
are raised by the eccentric E. worked by ordinary power, and replaced and firmly
held down before the descent of the stamp.-The pressure plate C. has a bright
turned face and is adjusted by screws so as to allow the steel plate A to be drawn
into the die smoothly and without corrugations or wrinkles,

page_text: The stamp plunger or force F., which is so constructed that the stamp is capable
of being removed and replaced by stamps of different shapes is raised vertically by
the cam G. working in slot H. and engaging with a roller R. to reduce friction.
The plunger falls by its own weight onto the sheet A. forcing it at each respective
stroke into the shapes shown dotted at 1. 2. 3. The partially formed vessel is then
subjected to heat and is again placed in the die as at J. Figure 2 when a different
plunger or stamp K. of the finished form Figure 2 is forced into it thus obtaining
the desired shape with nearly vertical sides as shown at L L. Figures 3 and 4.
A great advantage of this method of stamping is that it does not thin the
articles. A saucepan or other vessel so stamped would show nearly the same
thickness throughout its section.-The vessels are cut to the required height,
turned smooth thickly coated both inside and out with pure tin and finished in
the usual manner with handles etc. The lids M. are stamped in the same manner
as described with dies and stamps of the proper shapes and forms.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we claim is
First. The stamping of saucepans, stewpans and other culinary or similar
vessels out of thick sheet steel.
Second. The stamping and raising cold in a pressure stamp with cam action and
rolling pressure, saucepans stewpans and other culinary or similar vessels with
almost vertical sides substantially as hereinbefore described and illustrated by the
accompanying Drawings.