An Improvement in Punching and Stamping Machines.
Year: 1894

page_text: Date of Application, 2nd Nov., 1894
Complete Specification Left, 2nd Aug., 1895-Accepted, 21st Sept.,
1-895
PROVISIONAL SPECIFICATION.
An Improvement in Punching and Stamping Machines.
WILLIAM ROURKE Manufacturer 6 Tatton Grove Palatine Road Withington
Manchester do hereby declare the nature of this invention to be as follows:-
By means of this invention sheets bars or strips of metal may be punched with
any number of holes, and shaped as required, at one operation.
This is done by fitting to an ordinary punching or stamping machine .three
movable plates in proper position to be used as here described.
One of the outor plates is to be fitted with punches in the proper position the
punchies passing through corresponding holes in the middle or second plate and the
cutting portions of the punches made long enough to enter into the other outside or
third plate, which should be so made and tempered as to form a die or set of dies
to fit the punches in work.
The machine may be made to work in vertical or horizontal position as preferred,
and the punches and dies placed in any position so that they may fit together when
in work.
The shaping, such as crimping or fluting is done by contact under pressure
between the middle and third plates which should be made and shaped for the
purpose, as the material rests between these two plates during the operation, the
middle plate acts as a knock-off to release the punches as they are withdrawn from
the metal.
Dated this 1st day of November 180.1
COMPLETE SPECIFICATION.
An Improvement in Punching and Stamping Machines.
I WILLIAM ROURKE, of 6 Tatton Grove, Palatine Road, Withington,
Manchester, in the County of Lancashire, Manufacturer, 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:―
By means of this invention sheets, bars or strips of metal may be punched with
any number of holes and shaped as required at one operation.
This is done by fitting to an ordinary punching or stamping machine three plates
in proper position to be used as hereinafter described.
One of the outer plates is to be fitted with punches in the proper position, the
punches passing through corresponding holes in the middle or second plate, and the
cutting portion of the punches made long enough to enter into the other outside or
third plate, which shall be so made and tempered as to form a die or set of dies to
fit the punches in work. It is obvious that cast or other metal may be used fitted
with removablo dies, where needed.
The machine may be made to work in a vertical or horizontal position as
preferred, and the punches and dies placed in any position so that they may fit
together when in work.

page_text: The shaping, such as crimping or fluting is done by contact (under pressure)
between the middle and third plates, which should be made and shaped for the
purpose, as the material rests between these two plates during the operation, the
middle plate nets as a knock off' to release the punches as they are withdrawn from
the metal.
And in order that my said invention may be more clearly understood, I will now
proceed to describe the same with reference to the drawing accompanying this
Specification, which shews a front elevation of a stamping machine made according
to my invention.
a shews the bed of the machine, on to which is bolted the plate or block b. To
the plate I screw or otherwise connect two uprights or guides cc, which pass
through holes in the plates or blocks de. To the upper plate e I connect a piece
by means of bolts, and into vertical holes in the plate e punches h are secured by
means of the bolts i. Into the upper portion of the plate or block 6, I fix or form
dies, m are springs or equivalent devices may be used-for returning the
pieces d and e to their normal positions.
The action of a machine constructed as above is as follows:-
==
The piece of metal it is desired to shape and punch is placed between the plate
or block and the plate d. The piece is then brought down by suitable power,
thus bringing the punches through the holes 7 in the plate d, and forcing them
through the metal sheet, strip or bar to he punched, the points of the punches
entering the dies &, at the same time the plate e being brought into contact with the
plated will force this latter on to the top of the block or plate band shape the
metal accordingly.
When the power is taken off the plates d and e return to their normal positions
by means of the springs m, i.e. the position shewn on the drawing, the middle
plated acting as a knock off, to release the punches as they are withdrawn from
the metal.
When the plate & has risen a certain distance, it is checked by the pins n, whilst
the plate or block e continues to rise, thus withdrawing the punches completely.
Or the plate d may be checked in any other suitable manner.
Any fluting, crimping or shaping or combination of shapings may be produced by
using plates & and having their surfaces shaped as required.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
1 claim is:
1. The improvement in punching and stamping machines, substantially as set
forth.
2. In punching and stamping machines, the employment of moveable plates in
combination with punches, so arranged that metal sheets, bars or strips may be
shaped and punched at one operation.
Dated this Second day of August 1895.
BROWNE & Co.,
9 Warwick Court, Gray's Inn, London, W.C.,
Agents for the Applicant.
BROWNE & Co.,
9 Warwick Court, Gray's Inn, London, W.C.,
Agents for the Applicant.