Year: 1886

page_text: Date of Application, 16th July, 1886.
Complete Left, 16th Apr., 1887.
Complete Accepted, 17th May, 1887.
We the undersigned JOSEPH YELLOWLEY HAWDON, of Heaton, Newcastle upon
Tyne, Engineer, and JOHN ENGLISH, of Wallsend, in the County of Northumberland,
Machine Attendant, do hereby declare the nature of this invention to be as follows :-
A new and improved Slotting punch, which can be attached to any punching
machine; and is so contrived, that by means of a leading end or edge, together with
suitable and necessary guides, the punch is rendered capable of not only punching
circular holes in the ordinary manner, but also of cutting or shearing holes or edges
of any desired shape or size, in plates of any material or metal.
The Slotting punch is of oblong form on the cutting edge, and is shaped in
accordance with the desired form of hole to be cut.
It has a projecting leading punch, which pierces the first hole, and afterwards acts
as a guide while punching the remaining part of the hole.
It is carried by a Steel casting, which is securely bolted to the punching machine
slide; in this it revolves, being kept in the desired position by a handle & slide.
The die also revolves in a steel die holder.
In cases where it is only required to shape the outer edges of the plate, the projecting
guide need not be a punch in itself, but only of a simple form.
1000
JOS. Y. HAWDON.
JOHN ENGLISH.

page_text: JOSEPH YELLOWLEY HAWDON, of 18 North View, Heaton, Newcastle-upon-Tyne,
Engineer, and JOHN ENGLISH, of Wallsend, in the County of Northumberland,
Machine Attendant, 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 :-
The invention consists of a Punch of cast steel P; the body of which is of round
form, truly turned to fit and move easily in a steel casting H, which forms the holder,
and may be securely bolted to the slide of any ordinary punching machine. The
Punch terminates at the lower end in any form suitable for the work in hand, (that
shown in the accompanying drawing is for cutting manholes in the floors of Cellular
bottomed ships or steam vessels,) and has a circular Punch or leading end C which
forms a guide to the slotting Punch, after punching the first hole.
A small slide S, and handle, A, which is screwed into the body of the punch, and
moves freely in the guiding slots is also fitted. This handle keeps the Punch in
position, raises, lowers or turns it, as may be required.
The die D, (also of cast steel) is truly turned in the lower part to fit the
Die holder B, and is kept in position by the set screw, E.
To work the Punch; First take out the slide S, raise the Punch by the handle A,
and insert the plate in position, Then raise the tumbler of the punching machine,
when the first hole will be punched by the guide punch C. As the slide of the
punching machine rises, insert the small slide S, and proceed to slot out the hole to
the required form.
Having now particularly described and ascertained the nature of our said Invention,
and in what manner the same is to be performed, we declare that what wo claim is
:
1. The leading or guide punch, which in the first instance punches a hole in the
plate, and afterwards acts as a guide, so that the edge of the plate where the hole is
slotted is perfectly even and regular.
2. The vertical motion of the punch, together with the arrangement of the slide
and handle, thereby enabling the punch to be raised or lowered as required.
3. The circular motion of the punch and die, thereby enabling holes to be slotted in
long plates, which cannot be turned in the punching machine.
Dated this 15th day of April 1887.
JOS. Y. HAW DUN.
JOHN ENGLISH.