Improvements in Apparatus for Pressing Metals.
Year: 1894

page_text: Date of Application, 2nd Feb., 1894
Complete Specification Left, 2nd Nov., 1894-4ccepted, 8th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Pressing Metals.
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:-
This invention has reference to an improved construction of apparatus for pressing
metal so arranged that after a piece of metal such as for example a steel plate has
been pressed to any desired form such as for instance a channelled form, or a shallow
box form, or other shape as the case may be, the pressed article will when the
moving part of the press has returned to its normal position preparatory to another
operating stroke be supported in a position clear of the dies and free to be removed
and this without the employment of special rams or the like for removing the pressed
article from the die.
For this purpose the female die is constructed with a movable bottom made either
in one, or more pieces provided with legs or uprights that rest upon transverse or
longitudinal girders or bars which are suspended to chains or other devices con-
nected to a part of the press in such a way as to admit of the necessary movement
of the wall of the female die in relation to its bottom for effecting the pressing
operation but to ensure that at the termination of the return stroke of the press
movable bottom of the female die with the pressed article upon it shall occupy a
position in or near the mouth of the said die in which the pressed article will be
clear of the die and free to be removed as aforesaid.
the
The
As will be evident apparatus such as above referred to may be constructed in
various forms. In a press in which the upper portion that carries the male die is
stationary a convenient arrangement is as follows:-Upon the press table hollow
metal blocks are placed their number and arrangement depending upon the size and
form of the female die. In suitable positions distance pieces are introduced to
afford spaces for the transverse or longitudinal beams or bars intended to support
the movable bottom of the female die and the whole of the blocks are properly
secured together by suitable bolts. Upon the hollow blocks there are arranged
transverse bars or ribs at intervals corresponding to transverse ribs at the under-
side of the movable bottom of the female die, which die is built up in sections
bolted together and strengthened by longitudinal and transverse bolts.
transverse or longitudinal bars or beams are suspended to chains that hang from the
fixed upper portion of the press and the movable bottom of the female die is
supported by uprights that rest upon the said beams or bars the arrangement being
such that in the normal position of the respective parts preparatory to the
commencement of an operating stroke the upper surface of the movable bottom of
the female die will be practically level with or slightly above the top surface of the
surrounding wall of that dic and some distance below the male die. If now the
plate to be pressed be placed upon the said movable bottom and the press be put in
action the plate will be carried up by the walls of the female die into contact with
the male die and as the upward stroke of the press continues the edges of the
plate will be bent up and the transverse bars or ribs carried by the hollow blocks
will be brought up to the ribs at the underside of the female die bottom, which
will, at this time, be well within the female die, the chains then being slack.
During the return stroke the female die will descend clear of the male die and so
soon as the chains get taut the die bottom and pressed article will be arrested

page_text: but the rest of the female die will continue to descend until clear of the pressed
article which can then be removed as before stated. As will be evident other means
such as headed rods arranged to work through suspended eyes so as to admit of
upward movement and to arrest the downward movement of the beams or bars
carrying the die bottom may be substituted for the chains, which however I consider
preferable.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Pressing Metals.
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 performed to be particularly described and ascertained
in and by the following statement :-
This invention has reference to an improved construction of apparatus for pressing
metal so arranged that after a piece of metal, such as for example a steel plate, has
been pressed to any desired form such as for instance a channelled form, or a shallow
box form, or other shape, as the case may be, the pressed article will, when the
moving part of the press has returned to its normal position preparatory to making
another operating stroke, he supported in a position clear of the dies and free to be
removed, and this without the employment of special rams or the like for removing
the pressed article from the die.
For this purpose the female die is constructed with a movable bottom made either
in one or more pieces provided with legs or uprights that rest upon transverse or
longitudinal girders or bars which are suspended by chains or other devices
connected to a part of the press in such a way as to admit of the necessary move-
ment of the wall of the female die in relation to its bottom for effecting the pressing
operation but to ensure that at the termination of the return stroke of the press the
movable bottom of the female die with the pressed article upon it shall occupy &
position in or near the mouth of the said die and in which the pressed article will be
clear of the die and free to be removed as aforesaid.
As will be evident apparatus such as above referred to may be constructed in
various forms.
In the accompanying drawings,
Fig. 1 is a longitudinal vertical section showing one arrangement of pressing
apparatus according to this invention in which the upper portion of the press that
carries the male die is stationary;
Fig. 2 is a plan of the same, the press head and the male die being removed;
and
Figs. 3 and 4 are vertical cross sections of the same showing the female die in its
lowest and its highest position respectively.
Upon the press table 1 hollow metal blocks 2 are suitably secured as by bolts 2*,
the number and arrangement of these blocks depending upon the size and form of
the female die. In suitable positions between some of these blocks distance pieces 3
are introduced to afford spaces 3" for the transverse beams or bars 4 intended to
support and raise the movable bottom 5 of the female die, the whole of the said
blocks being properly secured in place by suitable bolts. The distance pieces 3,
spaces 3" and beams or bars 4 may, if desired, be arranged longitudinally instead of
transversely, but the latter arrangement is preferred. Upon the hollow blocks 2

page_text: there are arranged at intervals transverse bars or ribs 6 that form part of hollow
distance pieces upon which the movable bottom 5 rests during the completion of the
pressing operation. The sides and end walls of the female die are built up in
sections 8 bolted together and strengthened by longitudinal and transverse bolts 9
and 9 respectively, the latter bolts viz. 9 pressing through suitable recesses in the
hollow distance pieces between the transverse portions 6 thereof.
The transverse (or longitudinal) bars or beams 4 are connected to chains 10 that
hang from the fixed upper portion 11 of the press, and the movable bottom 5 of the
temale die is supported partly by the said hollow distance pieces and partly by
upright slabs or plates 12 that rest upon the beams or bars 4 and pass between the
central and end distance pieces (Fig. 2) the arrangement being such that in the
norinal position of the respective parts shown in Fig. 3, preparatory to the commence-
ment of an operating stroke, the upper surface of the movable bottom 5 of the
female die will be practically level with or slightly above the top surface of the
surrounding walls of that die and some distance below the male die 14 which is
secured to the underside of the fixed upper portion 11 of the press. If now the
plate to be pressed, shown in full lines at 15 in Fig. 3, be placed upon the movable
bottom 5, and the press be put into action, the plate 15 will be carried up by the
walls of the female die into contact with the male die 14, and as the upward stroke
of the press continues, the edges 15" of the plate 15 will be bent up as shown in
dotted lines, and the hollow distance pieces carried by the hollow blocks 2 will be
brought up to the underside of the female die bottom 5, which will, at this time, be
well within the female die, the chains 10 then being slack (see Fig. 4). During
the returu stroke, the female die will descend clear of the male die 14, and so soon
as the chains 10 get taut, the die bottom 5 and the pressed article 15 will be
arrested, but the rest of the female die will continue to descend until clear of the
pressed article 15 (Fig. 3) which can then be readily removed as before stated.
will be evident other means, such as headed rods, arranged to work through
suspended eyes so as to admit of upward movement and to arrest the downward
movement of the girders, beams, or bars carrying the die bottom, may be substituted
for the chains, which however I consider preferable.
As
Fig. 5 shows partly in longitudinal vertical section and partly in side elevation, a
modified arrangement in which the uprights 12 for supporting the movable bottom 5
are stationary, resting with their lower ends on the foundation or bed-plate of the
press and passing loosely through holes 12 in the press table 1. The operation is
the same as that described with reference to Figs. 1 to 4 inclusive; viz. the press
table 1 being in its lowest position and the plate 15 to be pressed being placed in
position on the movable bottom 5, then if the press table be set in motion, the
plate 15 will be carried up by the side walls 8 of the female die into contact with
the male die 14, and as the upward stroke continues, the edges of 15ª of the said
plate 15 will be bent up and the press table 1 itself ultimately brought up to the
movable bottom 5 of the female die to effect the final pressing operation. During
the return stroke, the female die will descend clear of the male die 14, and as soon as
the bottom 5 reaches the uprights 12, the said bottom 5 with the pressed article 15
thereon, will be arrested, but the remainder of the female die will continue to
descend until clear of the pressed article which is then free to be removed. It will
be obvious that instead of having the uprights 12 stationary in this arrangement,
they may be secured to the bottom 5 so as to move therewith.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manuer the same is to be performed I declare that what I
claim is :-
:-
1. In apparatus for pressing metals, a female die provided with a bottom that
is movable relatively to the side walls of the said die, and means for arresting the
notion of the said bottom so as automatically to remove the pressed article from
the said die when the moving part of the press returns to its normal position,
substantially as hereinbefore described.

page_text: 2. Apparatus for pressing metals, constructed, arranged and operating, sub-
stantially as described and shown for the purpose specified.
Dated this 2nd day of November 1894.
For the Annlicant
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.