Improvements in Stamping or Shaping Apparatus for Ductile Metals.
Year: 1896

page_text: Date of Application, 18th July, 1896
Complete Specification Left, 14th Apr., 1897-Accepted, 22nd May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Stamping or Shaping Apparatus for Ductile
Metals.
1, JOHN SHANKS, of Tubal Works, Barrhead, in the County of Renfrew,
North Britain, Sanitary Engineer, do hereby declare the nature of this invention
to be as follows, that is to say :-
My said invention has for its object to facilitate the stamping or shaping of
ductile metals, when from the nature of the metal, or the comparatively considerable
depth to which the metal has to be indented, difficulties and defects occur with
ordinary processes. An important application is for forming lead linings for water
cisterns and the like; but the invention may also in many cases be used with
advantage in shaping copper or other metals or alloys.
In carrying out the invention a sheet or plate of the metal is held between a
pair of frames, having an aperture of suitable form, and the sheet or plate is forced
through the aperture by a shaping block moved by hydraulic apparatus, or by
screwing or equivalent mechanism. The invention consists in fitting antifriction
rollers at the edges of the aperture to facilitate the passing of the metal through
it, and avoid overstraining. Or water or other suitable fluid under pressure
may be applied directly to the sheet or plate to be indented or shaped, the frame
holding the sheet or plate being part of a box or hollow block into which the fluid
is forced. The antifriction rollers may be applied at two or more parts of the
apparatus.
When a lead lining for a cistern is required to have taper or inclined sides the
shaping block may be made with jointed sides connected to the ram head by toggle
links. As soon as the jointed sides get below the rollers, the further movement of
the ram causes them to turn outwards. and expand the sides of the lead or other
metal operated on. Or the inclination may be given to the sides by a subsequent
operation in which a taper-sided block is forced down into the lining or shell
previously formed with uninclined sides.
Dated thie Seventeenth day of iT. 1906
EDMUND HUNT,
Applicant's Agent,
COMPLETE SPECIFICATION.
Improvements in Stamping or Shaping Apparatus for Ductile
'Metals.
1, JOHN SHANKS, of Tubal Works, Barrhead, in the County of Renfrew,
North Britain, Sanitary 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, that is to say:-
My said invention has for its object to facilitate the stamping or shaping of

page_text: ductile metals, when from the nature of the metal, or the comparatively considerable
depth to which the metal has to be indented, difficulties and defects occur with
ordinary processes. An important application is for forming lead linings for water
cisterns and the like; but the invention may also in many cases be used with
advantage in shaping copper or other metals or alloys.
In carrying out my invention a sheet or plate of the metal to be indented is held
between a pair of frames having a suitable aperture through which it is forced
either by a shaping block moved by hydraulic or other apparatus, or by the
directly-applied action of a fluid under pressure, the said frames being fitted with
antifriction rollers at the edges of the aperture to facilitate the passage of the
metal through it. In cases in which the metal plate requires to have inclined sides
the shaping block may be made with jointed sides connected to the ram head by
toggle links; and in such a case as soon as the jointed sides get below the rollers,
the further movement of the ram causes them to turn outwards and expand the
sides of the metal operated on.
And in order that my said invention and the manner of performing the same
may be properly understood I hereunto append a sheet of explanatory drawings, to
be hereinafter referred to, and showing examples of apparatus as made according
to my invention.
Figure, 1, of the drawings is a plan and. Figure, 2, is an elevation showing one
example of the improved apparatus, Figure, 3, being a plan with some parts
removed, and Figure, 4, a vertical section of the same.
Figure, 5, is a vertical section of a second example of the apparatus, and
Figure, 6, is a similar view of a third example.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
In carrying out the invention according to the example shown in Figures, 1, 2,
3, and 4, of the drawings, a sheet or plate of the metal is held between a pair of
frames, A, having an aperture, B, of suitable form, and the sheet or plate is forced
through the aperture by a shaping block, C, moved by hydraulic apparatus, or by
screwing or equivalent mechanism. The metal plate on being forced through the
aperture, B, is pressed against a part, F, forming the base of the lower frame, A.
The invention consists in fitting antifriction rollers, D, at the edges of the aperture
to facilitate the passing of the metal through it, and avoid overstraining. Water
or other suitable fluid under pressure may be applied directly to the sheet or plate
to be indented or shaped, the frame holding the sheet or plate being part of a box
or hollow biock into which the fluid is forced. The antifriction rollers, D, may be
applied at two or more parts of the apparatus.
When a lead lining for a cistern is required to have taper or inclined sides, the
shaping block, C, may be made with its sides jointed to its base (as in the example
shown in Figure 5) connected to the ram head, E, by toggle links, G. As soon as
the jointed sides get below the rollers (D) the further movement of the ram causes
them to turn outwards and expand the sides of the lead or other metal operated
upon in a suitable counterpart base plate, H. Or the inclination may be given to
the sides by a subsequent operation in which a taper-sided block, C, (shown in
Figure, 6) is forced down into the lining or shell, J, (shown in dotted lines)
previously formed with uninclined sides.
Having now particularly described and ascertained the nature of my said inven
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1: Improved apparatus for stamping or shaping ductile metals, comprising a
pair of frames, made with a suitable aperture, through which the metal plate (held
between the frames for the purpose of being indented) is forced by a shaping block
moved by hydraulic or other apparatus, the said frames being fitted with anti-
friction rollers at the edges of the aperture to facilitate the passage of the metal

page_text: plate substantially as herein before described with reference to Figures, 1, 2, 3,
and 4, of the accompanying drawings.
2. Improved apparatus for stamping or shaping ductile metals comprising a
pair of frames made with a suitable aperture through which the metal plate (held
between the frames for the purpose of being indented) is forced by the directly-
applied action of a fluid under pressure, the said frames being fitted with antifriction
rollers at the edges of the aperture to facilitate the passage of the metal plate
substantially as herein before described with reference to Figures, 1, 2, 3, and 4, of
the accompanying drawings.
3. Improved apparatus for stamping or shaping ductile metals, comprising a
pair of frames, made with a suitable aperture, through which the metal plate (held
between the frames for the purpose of being indented; is forced into a base block
having inclined sides by a shaping block made with jointed sides connected to the
ram head of hydraulic or other apparatus by toggle links for being moved thereby,
the said frames being fitted with antifriction rollers at the edges of the aperture
to facilitate the passage of the metal plate through them substantially as and for
the purposes hereinbefore described with reference to Figures, 1, 2, 3, 4 and 5, of
the accompanying drawings.
4. In combination with the subject matter of either Claim, 1, or Claim, 2, the
improved construction of shaping block and base plate for stamping or shaping
ductile metals operated by hydraulic or other apparatus, substantially as herein-
before described with reference to Figure, 6, of the accompanying drawings.
Dated this Thirteenth day of April 1897.
EDMUND HUNT,
Applicant's Agent.