An Improved Waggon Door.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
An Improved Waggon Door.
I, SAMSON Fox of The Leeds Forge, New Wortley, Leeds, in the County
of York, Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
Waggon doors have been made of steel pressed while at a low red heat to form
with a surrounding flange but as heretofore made they have been somewhat
expensive because the panel by which expression I mean all that portion of the
door within the surrounding flange is liable to buckle in cooling and to result in
twisting of the door to correct which straightening and flattening by expensive
manual labour has to be resorted to.
Now according to my present invention to obviate the disadvantage above
referred to and at the same time produce a door of increased strength I cut a plate
of mild steel to suitable shape, heat it and submit it to adequate pressure between
an arrangement of male and female dies adapted to impart to the metal the form
of a complete door comprising a marginal flange and, enclosed within this flange,
a panel or main part formed with strengthening corrugations, ridges and furrows
or embossments arranged in such wise whether of uniform depth or of different
depths and of such configuration as to meet any tendency to buckle in the
manufacture.
In one construction the panel of the door is formed with two diagonally
arranged embossments, which are deepest where they cross each other and
gradually decrease in depth towards the corners of the panel. The surrounding
Hanges may be perpendicular or inclined to the panel of the door as may be
required.
An Improved Waggon Door.
I, SAMSON Fox, of The Leeds Forge, New Wortley, Leeds, in the County
of York, Civil Engineer, do hereby declare the nature of this invention and in
what manner the same is to be perforined to be particularly described and
ascertained in and by the following statement :—
Waggon doors have been made of steel pressed while at a low red heat to form
with a surrounding flange but as heretofore made they have been somewhat
expensive because the panel by which expression I mean all that portion of the
door within the surrounding flauge is liable to buckle in cooling and to result in
twisting of the door to correct which straightening and flattening by expensive
manual labour has to be resorted to.
Now according to my present invention to obviate the disadvantage above
referred to and at the same time produce a door of increased strength I cut a plate

page_text: of mild steel to suitable shape, heat it and submit it to adequate pressure between
an arrangement of male and female dies adapted to impart to the metal the form
of a complete door comprising a marginal flange and, enclosed within this flange,
a panel or main part formed with strengthening corrugations, ridges and furrows
or embossments arranged in such wise whether of uniform depth or of different
depths and of such configuration as to meet any tendency to buckle in the
manufacture.
Figs. 1 and 2 of the accompanying illustrative drawings shew my improved
door in plan and end elevation respectively. As will be seen the panel of the door
is formed with two diagonally arranged embossments 1º, which are deepest where
they cross each other and gradually decrease in depth towards the corners of the
panel. The surrounding flanges 2 are perpendicular but they may be inclined to
the panel of the door as may be required. Referring to the modification
illustrated in Figs. 3 and 4 which are corresponding views to Figs. 1 and 2
respectively the embossments 1° are approximately parallel to the ends of the
.door.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The hereinabove described improved manufacture of a waggon door comprising
a panel with strengthening corrugations, ridges and furrows or embossments and
surrounding or marginal flange the whole formed out of a single plate of mild
steel by cutting to shape heating and pressing between suitable dies as set forth
with reference to the accompanying illustrative drawings.
Dated this 30th day 01 Vav I896
Dated this 30th day of
1896
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.