Hydraulic Punching Machine that will at One Operation Produce a Perfect and Level Washer.
Year: 1887

page_text: Date of Application, 8th Aug., 1887
Complete Left, 3rd Apr., 1888
Complete Accepted, 18th May, 1888
Hydraulic Punching Machine that will at One Operation Produce a
Perfect and Level Washer.
I, HENRY BERRY, of Croydon Works, Hunslet, Leeds, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
To provide a Machine, that shall hold that portion of the Plate, or flat Bar, from
which the Washer is to be formed, between two opposite, and opposeing faces, whilst
the Punching of the central hole, and exterior diameter, are simultaneously taking
place.
With this object in view, I provide a main Hydraulic Cylinder, fitted with a Piston,
the rod or Ram of which, carries at its outer end, a Punch equal in diameter to the
size of the Washer to be produced. A bottom Die, or Matrix is fixed at a suitable
distance from the Punch.
A "Pull Back" Cylinder of smaller area than the main Cylinder is formed in the
Cover of the main Cylinder, the Pistons of the two Cylinders being connected by Rod.
Pressure being admitted on the larger area of Punching Cylinder, causes the outdoor
or Punching stroke, overcoming the resistance of the pull back Piston which having
a continuos pressure on its annular surface, will on pressure being released from the
main Cylinder, cause both Pistons to ascend, and make the return or indoor stroke.
A third Cylinder, provided with Ram, and having a continuos pressure on the
underside of Ram, carries and actuates the Punch, for perforating the central hole. of
Washer, the Matrix for this Punch being carried by the larger and opposeing exterior
Punch.
The Ram carrying the Central Punch, has an interior and annular Cylinder formed
within it, and is provided with an annular Piston, having also continuos pressure on
its under surface. The annular Piston or Ram, being turned to two diameters, will
leave a shoulder or abutment, against which bears, a Collar or Ring, encloseing the
smaller diameter. This Ring serves two purposes, 1. as a stop, preventing the Punching
and annular Rams from being forced out of their respective Cylinders, by reason of
constant pressure being maintaned on their under areas. 2. as a holding up Ring,
as afterwards explained. A valve, controlled by hand, foot, or power, admits and
releases pressure from the main Punching Cylinder, and is the only valve employed.
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page_text: The action of the Machine is as follows.
The interior punching, and annular bearing up Rams being in their highest position,
by reason, as previously shown, (of pressure being continuosly applied to their under
surfaces) a Plate or Bar is placed on their upper surface.
The valve applying
pressure to the main Punching Cylinder, being now operated, will cause the Main
Punching Piston to make its outdoor stroke, meeting in its progress the Bar or Plate,
held up by the interior punching and holding up Rams. The main Piston and Punch
continueing to descend, will carry the Bar or Plate with them.
The interior punching Ram, not giving way, the interior punching will take place,
the main Piston continueing its descent, carries the annular holding up Ram before it,
till the Bar or plate is in contact with the exterior Matrix, when the Washer is
completed, by the outer diameter being punched.
It will now be seen that the ring like stop on annular Ram, forms a holding up
surface, between the interior and exterior punch, ensureing the Washer being kept
level during the punching process, and preventing the bending of the Bar or Plate,
which would ensue but for its action.
It will be evident that the Machine can be arranged to work in any position, and
that other than circular Washers can be produced.
1001

page_text: COMPLETE SPECIFICATION.
Hydraulic Punching Machine that will at One Operation Produce a
Perfect and Level Washer.
I, HENRY BERRY, of Croydon Works, Hunslet, Leeds, in the County of York,
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 :-
To provide a Machine, that shall hold that portion of the Plate, or flat Bar from
which the Washer is to be formed, between two opposite and opposing faces, whilst
the punching of the central hole and exterior diameter are taking place.
With this object in view, I provide a main Hydraulic Cylinder, fitted with a Piston,
the Rod or Ram of which carries at its outer end, a Punch equal in diameter to the
size of Washer to be produced, a bottom Die or Matrix, is fixed at a suitable distance
from the Punch.
1
1
A "Pull back" Cylinder of smaller area than the main (ylinder is formed in the,
cover of the main Cylinder, the Pistons of the two Cylinders being connected by rod.
Pressure being admitted on the larger area of Punching Cylinder causes the outdoor
or Punching stroke overcoming the resistance of the pull back Cylinder, which having
a continuos pressure on its annular surface, will on pressure being released from
main Cylinder, cause both Pistons to ascend and make the return or indoor stroke..
A third Cylinder, provided with Ram and having a continuos pressure on the under-
side of Ram carries and actuates the Punch for perforating the central hole of
Washer, the matrix for this Punch being carried by the larger and opposing exterior
Punch. The Ram carrying the central Punch has an interior and annular Cylinder
formed within it, and is provided with an annular Piston, having also continuos
pressure on its under surface, the annular Piston or Ram being turned to two
diameters will leave a shoulder or abutment, against which bears a Collar or Ring,
enclosing the smaller diameter, this Ring serves two purposes, 1. as a stop, preventing
the Punching and annular Rams being forced out of their respective Cylinders.
2. as a holding up ring, as afterwards explained. A valve controlled by hand, foot or
power admits and releases pressure from the main Punching Cylinder, and is the only
valve employed, the action of the Machine is as follows.
The interior Punching and annular bearing up Rams being in their highest position
a plate or Bar is placed upon their upper surface, the valve applying pressure to the
main Punching Cylinder being now operated will cause the main Punching Piston to
make its outdoor stroke, meeting in its progress the Bar or Plate held up by the
interior punching and holding up Rams, the main Piston and Punch continuing to
descend will carry the Bar or Plate with them, the interior punching Ram not giving
way, the interior punching will take place, the main Piston continuing its descent
carries the annular holding up Ram before it till the Bar or Plate is in contact with
the exterior Matrix, when the washer is completed by the outer diameter being

page_text: punched, it will now be seen that the ring like stop on annular Ram, forms a holding
up surface between the interior and exterior Punch ensuring the Washer being kept
level during the punching process and preventing the bending of the Bar or Plate,
which would ensue but for its action.
It will be evident that the Machine can be arranged to work in any position, and
that other than circular Washers can be produced.
In the accompanying Drawing which represents a sectional elevation of my
Invention, a is the Piston, 6 a Ram carrying at its outer end a Punch c, d is the
bottom Die, the internal diameter of which corresponds with the external diameter of
the Punch and of the same size as the Washer to be produced, e is a Ram carrying
the Punch for perforating the central hole of Washer, formed within the body of the
Rame is an annular Cylinder fitted with Piston f which is armed with an annular
ring i, j is a Matrix formed in the body of the Punch c and situated above and
centrally with the internal perforating Punch.
A. "Pull back." Cylinder with its Piston k and Ram is attached to the..main
Cylinder.
The action of the apparatus is as follows. A Plate or Bar of the required size being
placed on the upper surface of the annular holding up ring i and internal Punch m
and pressure being admitted, to the main punching Cylinder will cause the Punch to
descend and meet the Bar or Plate that is being carried by the central Punch m and
annular bearing up Ring i, the main Punch continuing its progress will overpower the
bearing up Ram f, the central perforating Punch m being held to its work by a Ram.
of sufficient size, will on the further descent of the exterior Punch cause the central
hole to be formed, and the completion of the Washer will be effected by the main
Punch c and its Die d.
A constant pressure is exerted on the bottom areas of Rams ef.
It will be observed that during the whole operation the Plate is securely held
between the surfaces of the main Punch and that of the annular holding up Ring,
ensuring a level surface to the finished Washer, pressure being now relieved from
main cylinder the Pull back Piston will raise the main Piston and Punch to their
original and highest position, the Rams e. f. also ascending will raise the finished
Washer to the level of the exterior Die, from whence it can readily be removed.
Having now particulary described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what I
claim, is...
1. The combination of the interior and exterior Punches with the holding up Ring,
substantially as and for the purposes herein set forth and indicated.
2. The general arrangement of the various parts, substantially as and for the
purposes herein set forth and indicated.
3. Controlling the movement of the main punching, perforating and holding up
Rams by the action of one valve, substantially as and for the purposes herein set forth
and indicated.
Dated this 31st day of March 1888