IMPROVEMENTS IN PUNCHING MACHINES
Year: 1884

page_text: I PETER JENSEN of 33 Chancery Lane in the County of Middlesex, Fellow of
the Institute of Patent Agents do hereby declare the nature of said invention for
"IMPROVEMENTS IN PUNCHING MACHINES ">
(a communication to me from abroad by
Kjöbenhavns Hesteskofabrik, of Copenhagen Denmark, Horseshoe Manufacturers)
to be as follows:-
The object of these improvements in punching machines is to admit of vibratory
or oscillatory variation in the direction of the hole to be made through the work
which it is believed has not heretofore been accomplished. The variation may
comprise two or more angles. Such punching machines are for instance
conveniently applicable to the formations of the nail holes in horse-shoes whero
the different holes should be at different angles in the various parts of the shoe but
they are also applicable for many other purposes or manufactures.
The bolster on which the work is placed does not, as heretofore, consist only of
the die plate but of a die plate in one with or combined with a lever, or two levers
(or a fork-ended lever) turning on fulcrum pins or pivots which have their bearings
on the anvil. The lever or levers may thus be turned to various angles as required
for the direction of the holes to be formed through the work. To set the work in
one of two directions or angles only the die levers may be connected to a counter-
balanced treadle. Suitable stops are provided for limiting the angle either way
that is to say when the treadle is raised by the counterweight and when it is
depressed by the foot of the workman. Or the angle may be varied to more than
two angles by a notched sweep with spring tooth on a handlo lever such as is used
for the link motion of a locomotive; or by a sweep with holes, through any of
which a peg may be inserted to fix the die at the required angle.
The punch is connected to a slide which receives reciprocating motion in a guide
in any ordinary or suitable manner. The position of the punch over the work is
adjusted by a screw. On the frame of the machine there may be provided an
adjustable conical headed stop against which the work can be placed so that the
bole is punched in the required distance from the edge. The guide is provided

page_text: with two horns for keeping the work from rising when the punch after the
operation goes up again.
When the die plate is not in one with the aforesaid levers the die is placed in
the anvil between the levers or between the forks of the lever. It is then cut off
slanting at the top and is about flush with or a little below the upper face of the
levers. The hole through the die tapers downwards to a larger size below.
When the die is placed in a rocess in the aforesaid handle lever it is provided
with spring tooth and notched sweep, its top being flush with the top face of the
lever so that the hole through the die comes exactly in the direction of motion
of the punch. The handle lever then with two half round pivots has its bearings
in the anvil so that its fulcrum comes in the point of crossing of a vertical plano
through the direction of motion of the punch and the top face of the handle lever.
In order that the latter shall not be carried up with the receding punch the lever
has a pin or peg on each side which pass through radial slots in the anvil which
slots are of a sweep corresponding to the fulcrum of the lever. To afford better
rest for the work to be punched the lever may be provided with a little.table or
flange on each side.

page_text: Improvements in Punching Machines.
"
I PETER JENSEN of 33 Chancery Lane in the County of Middlesex, Fellow of
the Institute of Patent Agents do hereby declare the nature of said invention for
"IMPROVEMENTS IN PUNCHING MACHINES (a communication to me from abroad by
Kjöbenhavns Hesteskofabrik of Copenhagen, Denmark, Horse shoe Manufacturers)
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
The object of these improvements in punching machines is to admit of obtative
variation in the direction of the hole to be made through the work. Such
punching machines are specially applicable to the formations of the nail holos in
horse shoes where the different holes should be at different angles in the various
parts of the shoe. Fig. 1 of the drawings is a side elevation of a partly shown
machine constructed according to this invention.
This arrangement admits of giving the punched holes only two different
directions.
The arrangement consists in this that the bolster on which the work is placed
and which contains the die plate is made adjustable. The die plate d is in one
with or combined with two levers a one on each side (or a fork ended lever)
turning on fulcrum pins or pivots c which have their bearings on the anvil b
wherein the die plate is inserted. The levers a with the die plate & may thus bo
turned to various angles as required for the direction of the holes to be formed
through the work. To set the work in one of two directions or angles only the
die levers a are as shown in Fig. 1 connected to a counterbalanced treadle lever fm
by means of the link i, lever h and rod j Suitable stops n and g are provided for
limiting the anglo either way that is to say either when the treadle end fis raised
by the adjustable counter weight in which case tho levers a assume the position
indicated by the dotted line k, or when it is depressed by the foot of the workman
in which case the levers a assume the position shown in full lines.
The die d is cut off alanting at the top as shown in the sectional view Fig. 2
and is about flush with the upper face of the levers, so that it does not come above
that face in any position. The hole through the dio tapers downwards to a larger
size below and the anvil 6 has a passage p for the punched out pieces of iron to
fall down through.
The punch is connected to a slide 9 which receives reciprocating motion in a
guide in any ordinary or suitable manner. The lines indicates the direction of
the motion of the punch. The position of the punch over the work is adjusted by
a screw W. On the frame of the machine there may be provided an adjustable
conical headed stop screw against which the work can be placed so that the hole
is punched in the required distance from the edge. The guide is provided with
two slanting horns t one on each side for keeping the work from rising when the
punch after the operation goes up again.
Fig. 3 is plan, Fig. 4 side view and Fig. 5 vertical cross section through a more
complete construction of die and anvil.

page_text: The die is in this case placed in a recess in a handle lever ka and is provided
with spring tooth g with handle i and notched sweep j. the top of the die being
flush with the top face of the lever so that the hole through the die comes exactly
in the direction of motion of the punch. The handle lever ka with two half
round pivots c bas its bearings in the anvil so that its fulcrum comes in the point
of crossing of vertical plane through the direction of motion of the punch and
the top face of the handle lever ka or anvil b. In order that the latter shall not
be carried up with the receding punch the lever has a pin or peg n on each side
which pass through radial slots r in the anvil b which slots are of a sweep
corresponding to the fulcrum of the lover a. To afford better rest for the work
to be punched the lever may be provided with a little table or flange t on
each side.
When the lovers a shown in Fig. 1 are provided with appliances for adjusting
and arresting similar to those described with reference to Figs. 3 to 5 the holes
may be punched in more than merely two directions,
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I clain as communicated to mo is
In punching machines the use and application of movable bolster for the work
whereby deviations from the usual bolster plane vertical to the direction of the
punching is rendered possible substantially as set forth, and either in the mannor
described with reference to Figs. 1 and 2 where the work is carried by two arms
turning on fulcrum pins below the bolster surface in the anvil, or in the manner
described with reference to Figs. 3 to 5 where the centre line for the shifting
motion of the table is in the upper plane of the dic.
BREWER & JENSEN,
For the Applicant.