Novel or Improved Sheet Metal Tubular Handles for Saucepans and other Culinary Utensils, and the Method of Manufacturing the same.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Novel or Improved Sheet Metal Tubular Handles for Saucepans and
other Culinary Utensils, and the Method of Manufacturing the
same.
We, THOMAS CHARLES CLARK, of the Firm of T. and C. Clark and Company, of
Shakespeare Foundry, Wolverhampton, in the County of Stafford, Hollowware
Manufacturers, and CHARLES PARISH, of the same address, Pattern Maker, do
hereby declare the nature of this invention to be as follows;-
Sheet metal tubular handles of the kind which are fixed at one end only to the
utensil, such as those for saucepans and the like, are formed according to this
invention with corrugations running spirally, or as rings, therearound, which_add
considerably to the appearance of the handles and afford a secure hold. It is
preferred to form these corrugations spirally and with a left-hand turn which,
especially in the case of a tapered handle which is usually preferred for the
purpose, minimises the risk of the handle turning in the hand when grasped by
the right-hand while the contents of a utensil are being poured out sideways.
According to a method of manufacturing the above described novel or improved
handles, which forms a further part of the invention, blanks for the handles are
cut out to the required shape, as is usual in the manufacture of sheet metal.
tubular handles, and these blanks are formed with oblique or transverse corruga-
tions, accordingly as the corrugations in the handles are required to be spiral or
in the form of rings, by stamping or pressing them between upper and lower
corrugated tools. The corrugated blanks are then formed up into the tubular
shape required. It is preferred to leave the inner end of the handle plain partly
for convenience in fixing it to the utensil and partly for convenience of manufac-
ture, and it is preferred to leave the outer end of the handle plain, also, for
appearance sake, and for convenience of manufacture; and, in closing up the
partially formed tube to shape, to use a mandril which is of a size at its ends
corresponding to the interior size of the plain ends of the handle, but which is
less in diameter at any part between its ends ihan the internal diameter of the
corresponding part of the handle, and to use exterior tools for such purpose formed
with portions at their ends to fit around the plain ends of the handles and cham-
bered out between to admit the corrugations.
In order to avoid liability of openings appearing along the joint of a handle,
the corrugations may be stopped or die out a short distance from the side edges of
the blank, so as to leave a plain margin along each side.
Dated this 21st day of February 1898
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicants.

page_text: Novel or Improved Sheet Metal Tubular Handles for Saucepans and
other Culinary Utensils, and the Method of Manufacturing the
same.
We, THOMAS CHARLES CLARK, of the Firm of T. and C. Clark and Company, of
Shakespeare Foundry, Wolverhampton, in the County of Stafford, Hollowware
Manufacturers, and CHARLES PARISH, of the same address, Pattern Maker, 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;
-
Sheet metal tubular handles of the kind which are fixed at one end only to the
utensil, such as those for saucepans and the like, are formed according to this
invention with corrugations running spirally, or as rings, therearound, which add
considerably to the appearance of the handles and afford a secure hold. It is
preferred to form these corrugations spirally and with a left-hand turn which,
especially in the case of a tapered handle which is usually preferred for the
purpose, minimises the risk of the handle turning in the hand when grasped by
the right-hand while the contents of a utensil are being poured out sideways.
According to a method of manufacturing the above described novel or improved
handles, which forms a further part of the invention, blanks for the handles are
cut out to the required shape, as is usual in the manufacture of sheet metal
tubular handles, and these blanks are formed with oblique or transverse corruga-
tions, accordingly as the corrugations in the handles are required to be spiral or
in the form of rings, by stamping or pressing them between upper and lower
corrugated tools. The corrugated blanks are then formed up into the tubular
shape required. It is preferred to leave the inner end of the handle plain partly
for convenience in fixing it to the utensil and partly for convenience of manufac-
ture, and it is preferred to leave the outer end of the handle plain, also, for
appearance sake, and, for convenience of manufacture.
In order that the invention may be clearly understood we will describe the same
with reference to the accompanying drawings, of which Figure 1 is a sheet metal
blank, for a tapered tubular handle, having corrugations formed therein previously
to the blank being formed up into the shape of a tubular handle with spiral corru-
gations. Figure 2 is a longitudinal section through the centre of a handle which
has been formed up into tubular shape from the blank shewn by Figure 1, and
shews also, in longitudinal section, the mandril which is used in the process of
bending up, and the working faces of the upper and lower tools. Figure 3 is a
transverse section taken on line cx of Figure 2. Figure 4 is a side elevation of
the handle which has been formed up to shape from the blank shewn by Figure 1
by means of the tools shewn by Figures 2 and 3; and Figure 5 is a blank cor-
responding to the blank shewn by Figure 1, but with transverse corrugations which
when the blank is formed into tubular shape give the appearance of rings.
The sheet metal blank A shewn by Figure 1 has the parallel corrugations a
formed in an inclined or oblique direction in relation to the longitudinal axis of
the blank when it is intended that the corrugations shall appear in spiral form;
and these corrugations are formed conveniently by means of stamping or pressing
between upper and lower corrugated dies. The corrugations are, preferably
formed as shewn so as to give a left-hand spiral turn, and thus render the handle
less liable to slip round when it is grasped by the right hand and the utensil to
which the handle is fixed is being tilted to pour out there.com. The inner end b
of the blank is shewn to be left plain for a considerable distance from the extreme

page_text: end, for convenience in fixing and also in manufacture, and it is preferred to leave
a plain and somewhat narrow margin c at the outer end of the blank for appearance
sake and also for convenience in manufacture; and it is preferred also to leave
narrow plain margins d along the sides of the blank to avoid liability of openings
appearing along the joint of the handle when the blank is bent up to shape.
The corrugations are stopped short or die out into the plain portions of the
blank, and they project preferably an equal distance from the opposite faces of the
flat portions of the blank.
The sheet metal blank shewn by Figure 1 is bent up into tubular form similarly
as sheet metal handles have frequently heretofore been bent up from blanks, that
is to say, by first forming it to a trough shape in ordinary troughing tools which
are, however, of course, of such size and shape, in cross section, as to allow ample
room between their surfaces for the corrugations of the blank, and then by operat-
ing it between upper and lower stamping or press tools B C and around a
mandril D. This mandril is of a size at its ends corresponding to the interior size
of the plain ends of the handle, but is reduced somewhat in diameter
between its ends to receive the portions of the corrugations which project
inwards, and the tools B and C are chambered out, as shewn, to receive
the outwardly projecting portions of the corrugations. As the mandril
is pulled backwards to remove it from the tubular handle, the handle will
readily spring sufficiently open at the joint to allow the inner end of the mandril
to clear itself from the inwardly projecting portions of the corrugations which are
towards the inner end of the handle.
A tubular handle is formed up from the blank shewn by Figure 5 just as in the
case of forming a tubular handle from a blank shewn by Figure 1, and no further
description therefore is necessary.
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 :-
:-
1. A sheet metal tubular handle, for a saucepan or other culinary -utensil,
having corrugations running in a spiral direction or as rings therearound, and in
the case of the spiral corrugations preferably in a left-handed direction, sub-
stantially as described.
2. A sheet metal tubular handle, for a saucepan or other culinary utensil,
having corrugations running in a spiral direction or as rings therearound, except
for plain margins of the metal along each side of the open joint or slit which
occurs between the brought-together edges of the metal, substantially as described.
3. The method of manufacturing sheet metal tubular handles for saucepans and
other culinary utensils, according to which the blanks are stamped or pressed
between suitable top and bottom dies with corrugations which are oblique or
transverse to the longitudinal axes thereof and are then formed up into tubular
shape by the aid of suitable appliances, substantially as described.
Dated this 18th day of November 1898.
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicants.