Improvements in Hand Punches for Marking Work.
Year: 1896

page_text: Improvements in Hand Punches for Marking Work.
1, WILLIAM CUTTELL, of Greenwich, Ripley, in the County of Derby, Boiler
Maker, do hereby declare the nature of this invention to be as follows:-
My invention relates to "Improvements in Hand Punches for Marking Work"
and is intended for the use of boiler makers, bridge makers, etc., and has for its object
the construction of a simple tool which does not consist in complicated mechanism,
and is extremely quick and true in doing its work.
My invention will make four punch marks round a given circle with one blow on
the top with a hand hammer, the centre of the said circle. being already given, the
said circle being the diameter of a hole that has to be drilled in iron, steel, etc.
My invention can be made in any size varying from three eights of an inch
upwards.
My invention consists of a round piece of steel with a hole drilled a distance
down the centre from one end, and four spikes, cut and filed at the same end, near
to the outside edge of the steel, and a set-screw placed in the side of the steel near
the spiked end, then a spiral spring made of thin steel wire to be placed in the said
hole in the end of the steel, then place in the same hole the conductor, which is
made of a small piece of round steel, turned to fit the hole rather loose and spiked
at one end, and a flat surface filed on one side near the other end for the said set-
screw to fit into, to stop. the said conductor from sliding out of the hole any more
than required.
improvements in Hana
marking
I, WILLIAM CUTTELL, of Greenwich, Ripley, in the County of Derby, Boiler
Maker, 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:-
My invention relates to "Improvements in Hand Punches for Marking Work,"
and has for its object the construction of a simple tool, which does not consist in
complicated mechanism, and is extremely quick and true in doing its work.
In order that my invention may be clearly rendered, reference may be had to
the accompanying sheet of drawings, in which Fig. 1 is a "sectional elevation"
and Fig. 2 is an external plan view of the tool at bottom-similar letters of
reference are used to indicate like parts in both views.
In constructing a tool according to my invention, I employ a round piece of
steel D Fig. 1, which is called an hand punch, with a hole drilled a distance down

page_text: the centre from one end and four spikes, cut and filed at the same end as shown in
Fig. 2 E F G H and in Fig. 1 G FH. C, Fig. 1, is a spiral spring, made of thin
steel wire and A, Fig. 1, is the conductor, which is made of a round piece of steel
turned so that it will slide in the hole where the spiral spring C, Fig. 1 is fixed,
one end of the said conductor A, Fig. 1; to be spiked and a flat surface filed on
one side near the other end for the set-screw B, Fig. 1, to fit into to stop the
spiral spring C, Fig. 1, from forceing the said conductor A, Fig. 1, out of the
hole any more than required. The point A, Fig. 1, must project about half an
inch farther than the points E F G H, Fig. 2, and G F H, Fig. 1, so that the
point A, Fig. 1, may be placed more easily in the centre of the circle where
a hole has to be drilled. The action is as follows: Take the tool, Fig. 1, in one
hand and hold it in a perpendicular position, then place the point A, Fig. 1, in the
centre of the circle where a hole has to be drilled, and press it down and the
conductor will guide the four spikes E F G H, Fig. 2, true to their destination;
then give it a blow on the top with a hand hammer, and it will make four punch
marks where the edge of the hole must be.
My invention can be made in any size varying from three eights of an inch
upwards, and is intended for the use of boiler makers, fitters, etc.
I do not comprise in my invention any spikes recessed into the hand punch for
marking work.
CLAIMS.
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 :-
First. In "Improvements in Hand Punches for Marking Work," a .com-.
bination of parts, consisting of a spiked and flat surfaced conductor sliding in the
centre of a four spiked hand punch, with a spiral spring to force the said conductor
out of the said four spiked hand punch, and a set-screw to regulate the projection
of the said conductor, substantially, as herein described and shown.
Second. In "Improvements in Haud Punches for Marking Work," a com-
bination of parts, whereby the projection of the aforesaid conductor will make it
easy to place in the centre of a circle where a hole has to be drilled, and the said
conductor will guide the four spiked hand punch true to its destination, and
make four punch marks where the edge of the hole must be, with one blow on
the top with a hand hammer, substantially as herein described and shown, with
reference to the appended sheet of drawings.
Dated this 5th day of October 1896.
)...
WILLIAM CUTTELL,
Applicant.