Improvements in Machines for Punching or Cutting Sheet Metal and the like.
Year: 1899

page_text: Date of Application, 23rd Dec., 1899
Complete Specification Left, 23rd Aug., 1900-Accepted, 8th Dec., 1900
[Communicated from abroad by COUSIN & ALDER, of Morges, in the Republic of
Switzerland, Manufacturers.]
Improvements in Machines for Punching or Cutting Sheet Metal and
the like.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents
45, Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
The object of this invention is to provide a machine for punching and cutting
sheet-metal of large sizes.
It is composed of two main portions both independent from each other, one of
which may
be fixed to the floor or other suitable support and the other one being
attached either to the ceiling of the workroom, or to a frame specially constructed
for that purpose and fixed to the floor or the like.
The accompanying drawings show by way of example one form of carrying our
improved invention into effect with special framing.
Figure 1 is a front view and
Figure 2 is an end view of the whole machinery.
Figure 3 is a front view and
Figure 4a side view, partly in section, of the interior parts of the machine
shown on a larger scale.
1 is the framing containing the punch-holder, provided with a support 2 carry-
ing a shaft 3, having a wheel 4 keyed to it. The framing 1 also carries by
means of its arms 5 and 6 a transmission shaft 7, upon which latter is mounted a
pinion 8 gearing into a wheel 4. Two fly-wheels 9 and 10 are keyed on
shaft 7 which carries two loose pulleys 11 and 12 and two fixed pulleys 13 and
14, adapted to be actuated by means of the belts 15 and 16 communicating with
any desirable source of power. The pulleys 11 and 13 are intended to cause the
machine to work at low speed, whilst the pulleys 12 and 14 are provided for higher
speed.
In the framing 1 is placed a piston or plunger provided with an excentric
ring 161 and having its portion 171 fixed to a rod 17 working in a slide 19. The
portion 161 forms the ring in which engages the excentric 20 of the shaft 3.
The ring 161 carries a block 53 of rectangular section in which is adjusted a
sliding cylindrical bar 60, serving as an intermediate piece between the said
block 53 and the upper face 172 of the punch 17, the block 53 is provided with
ears 61, placed in the vertical groove of the punchholder head 171. When the
machine is at work a wedge 55 sliding in a cross-opening of the block 53, serves
as resting place to the said bar 60 intended to lock the punch-holder to the excen-
tric, and when the action of the punch is to be stopped, the key 55 is pulled back
and the action of the excentric on the bars 60 and 17 is stopped.

page_text: To this effect the said key 55 is hinged to the hand-lever 56, pivoted at 57 to
the block 53 by means of which the key may easily be withdrawn or moved back
in its place. A screw 54 gearing in a longitudinal groove of the bar 60 prevents
the latter from rotating.
The block 53 is further provided with a lateral stud or projection 63 and the
frame 1 has internal lever 58, placed
an
in reach of the said stud
projection 53 and provided with an external handle 59. By
means of the latter the punch-holder 17 may be lifted, when excentric 20 is in
the position indicated in Figures 3 and 4 the key 55 being drawn back.
or
The plunger 17 carries a mandril 21 fixed thereto by means of a screw-thread
said mandril carrying a punch 22 which latter it is obvious may be inter-
changable.
The punch 22 is intended either for the so-called punching-action or to cut
sheet-metal by successively punching the same along a predetermined line.
To the framing 1 is fixed by means of a ring 23 and screws a support 25 carry-
ing two screw bolts 26, 27 the length of which may be regulated by means of
nuts 28, 29, each bolt carrying an adjustable bell-crank lever 30, 31.
In the drawings the portion of the machine described above is fixed to a main
frame formed of a rigid base 32 fixed to the floor or the like by means of suit-
able bolts and carrying by means of columns 33 a rigid cross-bar 34 to which
is fixed the upper framing 1.
The lower portion of the machine is composed of a framing 35 fixed to the
base 32, the surface of which carries a dove-tailed slide-bar 36 engaging a car-
riage 37 also provided with a dove-tailed slide-bar 38 engaging in the upper por-
tion 39 of the framing. The slide-bars 36. 38 are perpendicular to one another
and are intended for the adjustment of the matrice in its connection with the
punch. The shifting of the carriage 37 on the slide-bar 36 takes place by means
of screw-nuts 40 and that of the piece 39 on the slide-bar 38 by means of a
screw-nut 41.
The portion 39 carries a cap 42 in which are placed two pieces 43 and 44, the
first being so joined by means of a tongue or screw 45 to the piece 39 as to be
incapable of rotation, a key 46 engaging in a vertical groove preventing the
second one from rotating.
Between the portions 43 and 44 a ring 47 is placed which is provided with
inclines 48 corresponding to other inclines formed in the adjacent fronts of the
said pieces 43 and 44. A tangential screw 49 permits the rings 47 to be rotated
and a screw 50 to keep it in the desired position.
On the portion 44 is placed the matrice-holder 51, carrying the matrice 52.
The rotation of the ring 47 by means of the screw 49 the lifting and the lowering
of the matrice-holder 51 with the matrice 52 is obtained by means of the action
of the said inclines.
The object of this device is to facilitate the separation of the punch and the
matrice to allow of interchanging the same, or for the purpose of taking off the
sheet-metal.
By tightening the screw 50 the matrice-holder 51 is kept in its place.
The lowering of the matrice-holder is caused by its own weight.
The machine thus described permits the punching of sheet-metal of large size.
By using a suitable punch in the same it will also be adapted for cutting any
kind of openings of any shape whatever when guiding suitably the displacement of
the sheet-metal on the boss, during the lifting and lowering movement of the
punch. It will therefore be seen that the machine works somewhat like a saw
having one tooth.

page_text: Improvements in Machines for Punching or Cutting Sheet Metal and
the like.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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 object of this invention is to provide a machine for punching and cutting
sheet-metal and like material of large sizes.
It is composed of two main portions both independent from each other, one of
which may be fixed to the floor or other suitable support; the other being attached
either to the ceiling of the workroom, or to a frame specially constructed for
that purpose and fixed to the floor or the like.
In order that the invention may be readily understood I will describe the same
fully with reference to the drawings accompanying my Provisional Specification
which shew by way of example one form of carrying my improved invention into
effect with special framing.
Figure 1 is a front view and
Figure 2 is an end view of the whole machinery.
Figure 3 is a front view and
Figure 4a side view, partly in section, of the interior parts of the machine
shown on a larger scale.
1 is the framing containing the punch-holder, provided with a support 2 carry-
ing a shaft 3, having a gear wheel 4 keyed to it. The framing I also carries by
means of its arms 5 and 6 a transmission shaft 7, upon which latter is mounted a
pinion 8 gearing with the wheel 4. Two fly-wheels 9 and 10 are keyed on
shaft which carries two loose pulleys 11 and 12 and two fixed pulleys 13 and
14, adapted to be actuated by means of the belts 15 and 16 communicating with
any desirable source of power. The pulleys 11 and 13 are intended to cause the
machine to work at low speed, whilst the pulleys 12 and 14 are provided for higher
speed.
In the framing 1 is arranged an excentric ring 161 connected by means of a
portion 171 to a punch rod 17 working in a guide 19. The portion 161 forms the
ring in which engages the excentric 20 of the shaft 3.
The ring 161 carries a block 53 of rectangular section in which is adjusted a
sliding cylindrical bar 60, serving as an intermediate piece between the said
block 53 and the upper face 172 of the punch rod 17, the block 53 is provided
with ears 61, placed in the vertical groove of the punch-holder head 171. When
the machine is at work a wedge 55 sliding in a cross-opening of the block 53,
serves as resting place to the said bar 60 intended to lock the punch-holder to the
excentric, and when the action of the punch is to be stopped, the key 55 is pulled
back and the action of the excentric on the bars 60 and 17 is stopped.
To this effect the said key 55 is hinged to the hand-lever 56, pivoted at 57 to
the block 53 by means of which the key may easily be withdrawn or moved back
in its place. A screw 54 gearing in a longitudinal groove of the bar 60 prevents
the latter from rotating.
The punch holder head 171 is further provided with a lateral stud or projec-
tion 63 and the frame 1 has an internal lever 58, placed in reach of the said stud
or projection 63 and provided with an external handle 59. By means of the latter
the punch rod 17 may be lifted, when the excentric 20 is in the position indicated
in Figures 3 and 4, the key 55 being drawn back.

page_text: The punch rod 17 carries a mandril 21 fixed thereto by means of a screw-thread
said mandril carrying a punch 22 which latter it is obvious may be interchangable.
The punch 22 is intended either for the so-called punching-action or to cut
sheet-metal or the like by successively punching the saine along a predetermined
line.
To the framing 1 is fixed by means of a ring 23 and screws, a support 25 carry-
ing two screw bolts 26, 27 the length of which may be regulated by means of
nuts 28, 29, each bolt carrying an adjustable bell-crank lever 30, 31.
In the drawings the portion of the machine described above is fixed to a main
frame formed of a rigid base 32 fixed to the floor or the like by means of suit-
able bolts and carrying by means of columns 33 a rigid cross-bar 34 to which
is fixed the upper framing 1.
The lower portion of the machine is composed of a framing 35 fixed to the
base 32, the surface of which carries a dove-tailed slide-bar 36 engaging a car-
riage 37 also provided with a dove-tailed slide-bar 38 engaging in the upper por-
tion 39 of the framing. The slide-bars 36, 38'are perpendicular to one another
and are intended for the adjustment of the matrix in its connection with the
punch. The shifting of the carriage 37 on the slide-bar 36 takes place by means
of screw-nuts 40 and that of the piece 39 on the slide-bar 38 by means of a
screw-nut 41.
The portion 39 carries a cap 42 in which are placed two pieces 43 and 44, the
first being so joined by means of a tongue 45 to the piece 39 so as to be incap-
able of rotation, a key 46 engaging in a vertical groove preventing the second
one from rotating.
Between the portions 43 and 44 a ring 47 is placed which is provided with
inclines 48 corresponding to other inclines formed in the adjacent fronts of the
said pieces 43 and 44. A tangential screw 49 permits the rings 47 to be rotated
and a set screw 50 is provided to keep it in the desired position.
On the portion 44 placed the matrix-holder 51, carrying the matrix 52. By
rotating the ring 47 by means of the screw 49, the lifting and the lowering of
mata ix-holder 51 with the matrix 52 is obtained, owing to the action of the
inclines 48.
The object of this device is to facilitate the separation of the punch and the
matrix to allow of interchanging the same, or for the purpose of taking off the
sheet-metal.
By tightening the screw 50 the matrix-holder 51 is kept in its place.
The lowering of the matrix-holder is caused by its own weight.
The machine thus described permits the punching of sheet-metal or the like of
large size. By using a suitable punch in the same it will also be adapted for
cutting any kind of openings of any shape whatever when guiding suitably the
displacement of the slicet-metal or other material on the boss, during the lifting
and lowering movement of the punch. It will therefore be seen that the machine
works somewhat like a saw having one tooth.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, I declare that what I claim is:-
1. In a machine for punching and cutting sheet metal and the like, the com-
bination of a lower portion and of an upper portion, the lower portion being
formed of a framing fixed to the floor and provided with suitable slide-bars on
which is adjusted a box containing a matrix-holder formed of superposed portions
provided with suitable inclines, corresponding to each other, one of the said por-
tions being capable of rotation in the said box and the upper portion of the
matrix holder being guided cross-ways, by suitable keys the whole of the device
permitting of the matrix being displaced in any direction, the upper portion of
the machine being formed of a froming carrying the punch and its actuating

page_text: mechanism, said frame being so shaped as to be axed to any fixed point above
the lower framing in order to produce the punoning and cutting out of the sheet-
metal or the like of any size placed upon the lower portion, substantially as
described and illustrated in the accompanying drawings.
2. A machine for punching and cutting sheet metal and the like constructed
combined and operating substantially as herein before described and illustrated by
the accompanying drawings and for the purpose specified.
2nd dox of August 1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.