Improvements in Apparatus for Pressing or Bending Plates into Box or Trough like Forms.
Year: 1891

page_text: Date of Application, 8th Sept., 1891
Complete Specification Left, 8th June, 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Pressing or Bending Plates into Box
or Trough like Forms.
I, SAMSON Fox, of Leeds Forge, Leeds, in the County of York, Civil
Engineer, do hereby declare the nature of this invention to be as follows :—
The method hitherto adopted of pressing plates into box or trough like forms
has been to force the plate by means of a male die into a female die prepared to
receive it allowing only for the thickness of the plate between the male and female
dies. At the ends of bars or troughs so formed, where the plate is turned upon
itself to form the corners, great difficulty is experienced in dealing with the surplus
material, so as to obtain the desired shape, by reason of the great friction, and the
ends of the bars are consequently left rough and uneven, and it is difficult to form
deep flanges of thin material.
My present invention has reference to apparatus designed to overcome the
difficulty mentioned for which purpose I employ in conjunction with the dies,
wedges, levers, or screws, act from the outside of the female die or matrix or from
within the male die, and are operated by the movement of the hydraulic or other
press, so as to allow the dies a certain amount of play at the points where there is a
surplus amount of metal.
Although in most cases the friction mentioned occurs only at the ends or corners
of the article being operated upon, it is sometimes desirable to relieve the friction
not only at the ends, but also at the sides of the bars or troughs, and the wedges,
levers, or screws may accordingly be employed in the formation of the whole of the
dies or in any part or parts of the same; and they may be used in conjunction with
apparatus already in use.
According to my invention the female dies, or portions of them are so suspended
and arranged as to allow room for the surplus material to pass easily into the
matrix as at first prepared and I so apply pressure upon the outsides of the partially
formed articles as to get rid of the surplus material by squeezing it upwards, or
where that cannot be entirely effected, by forcing it into cavities or recesses prepared
in the male dies to receive it. The ends (or other parts if desired) can be pressed
not only vertically but into acute or obtuse angles as may be required. Springs
may be used either in the male or female dies to facilitate the process.
Dated this 8th day of Nentember 1901
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Pressing or Bending Plates into Box
or Trough like Forms.
--
I; SAMSON Fox, of Leeds Forge, 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 performed to be particularly described and ascertained in and by
the following statement :-
The method hitherto usually adopted of pressing plates into box or trough like
forms has been to force the plate by means of a male die into a female die prepared
to receive it, allowing only for the thickness of the plate between the male and
female dies. At the ends of bars or troughs so formed, where the plate is turned

page_text: weighted at c¹ to enable it to return to its normal position when not acted upon by
the lever or screw, as the case may be.
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 :-
Apparatus for pressing or bending plates into box or trough-like forms, wherein
provision is made for removing surplus metal and relieving friction by the use in
conjunction with dies adapted to afford room at first for surplus metal, of wedges,
levers, or screws so applied as to cause such metal to be subsequently displaced
substantially in the manner described with reference to and illustrated by the
accompanying drawings.
Dated this 8th day of June 1892.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.