Improvements in Machinery or Apparatus for the Manufacture or Production of Certain Articles from Metallic Plates.
Year: 1889

page_text: Improvements in Machinery or Apparatus for the Manufacture or
Production of Certain Articles from Metallic Plates.
I, SAMSON Fox, of the Leeds Forge, New Wortley, Leeds, in the County of
York, Engineer and Ironmaster, 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 :-
In the specification of an application for Letters Patent bearing even date herewith
is described the process of the manufacture of certain articles from metallic plates which
hitherto have been difficult and costly to produce especially in duplicates thereof.
My present invention has reference to improved machinery or apparatus by means
of which such articles are to be produced, and to the manner in which such machinery
is to bo applied.
The form of the combined punching and shearing apparatus will depend upon the
shape or configuration to be imparted to the metallic plate acted upon, but for the
purpose of explaining the nature of my invention and the manner in which it may be
conveniently carried into practical effect I will describe with reference to the annexed
two sheets of illustrative drawings, the construction of an apparatus for and the
manufacture or production thereby from a metallic plate, of a "wheel piece" for a
bogie frame for rolling stock having the shape and configuration represented in Fig. 1,
of the said drawings and which has through it holes or openings 1, 2, and 3.
Figs. 2 to 6, inclusive illustrate combined punching and shearing apparatus
according to my invention, Fig. 2, being a plan of an annular shear or a compound
female die in which a frame b. has shear blades 6' fixed around it whose cutting.
edges & constitute the inner part of the die, the internal configuration of which must
correspond to the external form to be imparted to the plate operated upon, which in
this instance is that shewn in Fig. 1.-c, c, c, are punches placed in openings at the
bottom of the die b, (see Fig. 6.) or in other suitable receptacles for holding them in
position for forming the perforations 1, 2, and 3, above referred to.
Fig. 3. is a plan or face view of the male die 6*, which is a compound of punch and
dies, the punch blades 6, having an external configuration corresponding to the

page_text: internal form of the above described anunlar shear b. whilst the dies c², correspond to
the shape of the punches c, c, c, contained within the said shear or female die b, and
consequently also to perforations required to be formed in the plates treated.
Figs. 4, and 5, slew in elevation the above described parts. The combined parts
indicated in Fig. 4, are to be attached to one part, say the stationary part and the
combined parts indicated in Fig. 5, to the other (say the movable) part of any suitable
hydraulic or other actunting machine such as referred to in the Specifications of
former Patents granted to me and being respectively No. 13,020 dated 29th October
1885, and No. 15,688 dated 1st December 1886, or the said combinations (Fig. 4, and
Fig. 5, respectively) may be attached to movable parts of any suitable pressing
machine so that they may be caused to approach each other when a plate (hot or
cold) is between them, and at one operation to cut such plate to the desired form
(Fig. 1).
Fig. 6, is a transverse sectional elevation at the lines 4-4, 5-5, 6-6, and 7-7,
of the abovo described compound punching and shearing apparatus, the parts being
in the relative positions they would occupy when having cut a plate, to the required
external form and just about to make the perforation, 1, 2, and 3, therethrough.
The dies corresponding to the perforations 1, 2, and 3, are shewn formed in
sectious but I find it in some cases advantageous and economical to make the dies c¹
for each respective perforation, in one piece (shewn in Fig. 7, in plan and in sectional
elevation Fig. 8) by casting it in hard steol, then grinding out internally to the proper
form and externally to a proper shearing angle.
The punch blades & and shear blades I also cast in hard steel as shewn in cross
section Fig. 8, and Fig. 9. Such dies are suitably mounted upon and in metallic
beds or frames 6* and b, as shewn, and are also ground externally and internally as in
the case of the annular dics c. In this way I can produce punches and dies cheaply
and expeditiously. It is to be understood that the shapes of the punches and dies c, c,
will depend upon the forms of holes or perforations required to be produced and
that these punches and dies will be dispensed with when the plate is not to be
perforated.
Also it is to be noted that plates cut to any desired form in accordance with my
invention may be subjected to other operations, such for example as flanging,
as may be required to adapt them to the particular purposes for which they are
intended.
Having now particularly described and ascertained the nature of my said inven-
tion, and the manner of carrying the same into practical effect, I declaro that what
I claim is :-
Apparatus substantially as heroinabove described with reference to the drawings
annexed for the manufacture in the manner set forth of articles of the kind
referred to.