Improvements in Presses.
Year: 1894

page_text: Date of Application, 17th July, 1894
Complete Specification Left, 28th Mar., 1895-Accepted, 6th July, 1895
Improvements in Presses.
I, OLIVER WILLIAM KETCHUM, residing at 323, King Street, West, at the
City of Toronto, in the County of York, in the Province of Ontario, Canada,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
an
My invention relates to improvements in presses more particularly adapted for
the stamping or forming up of sheet metal pulleys and the object of the invention
is, first, to provide a blank holder for the sheet metal plate by which it can be
securely held in position until the die of the upper ram is brought down; secondly,
to provide ready means of setting the different sizes of the cylindrical portion of
the lower die so as to form pulleys of different diameters; thirdly, to provide a
simple means whereby the central hole may be punched in the web and minor holes
punched around it for the purpose of securing the web to the flange of the hub by
suitable bolts and further to provide means for forcing the formed up blank out of
the cylindrical portion of the lower die; fourthly, to design such a form of dies and
apparatus as will upon one downward stroke of the ram effectually form up
inwardly turned bead on the free edge of the rim of the pulley; fifthly, to devise a
simple and efficient attachment to the press whereby the rims of sheet metal
pulleys may be readily crowned and it consists essentially, first, of securing the
blank holder upon suitable standards and providing clamping bolts which extend
through the blank holder and cylindrical portion of the lower die and are provided
with slots at the lower end into which tapered keys are driven in order to securely
hold the blank between the blank holder and the flange of the cylindrical portion
of the lower die, secondly, in forming annular grooves in the bed-plate of the press
and providing corresponding annular downwardly extending projections in the
bottom of the cylindrical portion of the lower die to fit into one of such grooves,
also in providing radial grooves and one end of the bar being designed to be
clamped upon the top of the lower flange of the cylindrical portion of the lower
die, while the other end of the clamping bar is clamped by the bolt upon a block
so as to thereby rigidly hold the cylindrical portion of the lower die upon the
bed-plate, thirdly, in forming the die of the lower ram, the cylindrical punch and
its surrounding punches with a stripper head through which the punches extend
and which is supported upon spiral springs upon the top of the die, the upper die
being constructed and designed to co-act with the lower die and stripper head,
fourthly, of securing to the upper ram of the press a die corresponding in form to
the web and forming on the stationary portion of the lower die an annular groove
in which the bead is formed, the pulley being supported upon the lower ram by a
supplementary ring of peculiar construction and the upper ram being designed to be
brought down against the pressure of the lower ram so as to force the edge of the
rim into and around the annular groove formed in the stationary portion of the die ;
fifthly, in providing a circular hase block with an annular flange for the reception
of the web and the bottom edge of the rim of the pulley and adjustable retaining
ring for the top of the rim of the pulley and a sectional expansion ring adjustably
attached to the ram so that when the ring is brought down it will pass within the
free edge or bead of the pulley and upon its coming against the web will be forced
outwardly so as to form the crown and the whole of the machine being otherwise
constructed and arranged as hereinafter more particularly explained.

page_text: The frame of the press is comprised of upper and lower I-beams connected
together by standard rods and a web supported on the upper I-beams by minor
standard rods. Other I-beams extend between the lower I-beams and support,
together with the said beams, a hollow bed-plate. Channel beams extend between
the lower I-beams.
I will first describe the means whereby my sheet pulley is formed up. An upper
hydraulic ram is employed which is held within a cylindrical casing and is supplied
with pressure through a pipe. The cylinder is suitably supported in the web and
the lower end of the ram is also supported.
=
The cylinder of the ram to which the upper die is attached is suitably supported
in a cross frame extending between the upper I-beams.
The plunger of the upper ram to which is connected, as hereinafter described,
the upper die is hollow and moves within a cylinder which has a hole made at
the top into which fits a compression plug. The plunger is also-closed at the
bottom...
A pipe leads through the cylinder into a vertical opening which is connected by
horizontal and vertical passage ways to the interior of the plunger which has an
outwardly extending flange to which is secured a laterally adjustable block by
means of bolts. Bracket-shaped lugs extend out from the upper flange of the
adjustable block and through which extend the set-screws. The holes through
which the bolts extend are larger than the bolts so as to permit of the lateral
adjustment of the block by means of the set-screws so as to bring the centre of the
block on exact line of centre with the centre of the lower die.
A die which is cylindrical in form is attached by means of an internally threaded
hub to the die holder which is secured to the lower flange through its upper flange.
A steel ring is secured within the bottom of the die holder, the inner diameter of
the ring being slightly less than the hole through the die holder. Passage ways
lead obliquely up through the die holder to and through a flange. The steel ring
has a series of round recesses cut in the bottom and vertical holes. Annular
grooves are cut in the bottom of the die and designed to form with corresponding
projections on the lower die the beads on the web of the pulley.
Cross beams are attached to or form part of the lower part of the plunger.
Rods extend upwardly through the supporting beam into a cross bar. A plunger
rod is secured at the upper end in the cruss bar and has the lower end extending
downwardly into a cylinder. The water pressure is obtained through a pipe.
A piston rod is secured in a web and extends down into a hole in a compression
plug. A suitable packing surrounds the rod at the top of the hole. A pipe leads
into the hole and is designed to exert an upward pressure upon the rod through a
channel in the cylinder when the water is turned ou through this pipe. The web
is connected by rods to arms of the blank holder supporting the frame, the blank
holder being connected to the frame by bolts.
The cylindrical portion of the lower die is provided with an upper outwardly
extending flange and a lower flange. The top edge of the cylindrical portion of the
lower die is surrounded by a steel ring, and the bottom edge of the blank holder is
also preferably surrounded with a steel ring. The blank holder is brought down
by the hydraulic ram upon the top of the Hange of the cylindrical portion of the
lower die, the circular blank having been first placed on top of the cylindrical
portion of the lower die. As it is absolutely necessary that the blank holder should
hold the blank very firmly, I provide, in addition to the hydraulic ram which may
not have sufficient pressure to hold the blank securely enough, bolts which are held
in the blank holder and when it is brought down extend through the upper flange of
the cylindrical portion of the lower die. In order to securely grip the blank 1
provide slots in the lower portion of the bolts and drive into them tapered
feather keys.
A series of annular grooves is formed in the bed-plate and an annular projection
is formed in the bottom of the lower flange of the cylindrical portion of the lower
die which is made with a central opening of sufficient diameter to form up the size

page_text: рансу resired and consequently the lower Hange and annular projections will be
more or less distant from the centre.
Radial reversed T-shaped grooves are made in the circular bed-plate to receive.
the bolts the heads of which fit and are retained within the grooves. The bolts
extend through clamping plates and are provided with nuts.
Blocks are employed which bridge the grooves and the outer ends of plates rest
upon these blocks and the inner ends upon the lower flange.
down upon their respective bolts the plates will securely hold the cylindrical portion
By screwing the nuts
down upon the bed-plate.
A lower ram having a supporting head moves within a cylindrical casing and is
supplied with hydraulic pressure from a pipe. The lower die plate is supported
upon the bed-plate.
A stripper or stripper head is supported upon a flange of the supporting head by
spiral springs. Recesses are formed in the stripper and recesses are also formed in
the head for the reception of springs which are of sufficient length to permit of the
requisite movement of the stripper which is provided with a suitable shoulder and
is screwed into a central opening in the die plate.
A cylindrical punch is screwed or otherwise secured in the head and fits and
moves vertically within a hole made in the stripper head and a corresponding hole
of the ring forming part of the upper die.
The web of the pulley is pressed or formed up upon the die plate by the upper
die, the die plate having an outer groove which with the bead of the upper die
forms the bead at the juncture of the rim with the web of the pulley. The die
plate is also provided with annular projections which with the annular grooves of..
the upper die form the annular beads in the web.
A series of punches surrounds a punch secured in the supporting head and extends
upwardly through the stripper and conical minor dies which latter are screwed into
corresponding holes made in the top of the stripper and are designed to form up
the conical bosses around the central holes of the web of the pulley. The punches
which extend through the conical minor dies co-act with the holes in the upper die
to punch holes out of the centre of the conical bosses of the web.
Passage ways serve to conduct the waste discs punched away from the die-plate.
Slots are formed partially out of the block and die holder between them. The
waste discs cut by the punch out of the centre of the web are carried up to the said
slots through which they may be pushed.
I will now briefly describe the operation of my press in forming the pulley.
The blank is laid upon the top of the cylindrical portion and pressure is brought
upon the ram so as to bring down the blank holder upon the top of the flange.
If there is not sufficient pressure to grip the blank securely enough the tapered
feather keys may be pushed into the slots of the bolts so as to securely bind the
blank holder and cylindrical portion of the lower die together. The pressure is.
now brought upon the ram of the plunger so as to force the cylindrical die down.
As it is caused to descend it presses upon the blank and gradually draws it out
from between the blank holder and flange of the lower portion and presses it down.
The lower ram during this period has no pressure applied to it and the die plate
remains at the bottom of the cylindrical portion of the lower die and rests upon the
bed plate. Immediately upon the upper die reaching the die plate pressure is
applied to the lower ram and it is impelled upwardly and forces the central punch
and the minor punches through the centre of the web and bosses of the web,.
respectively, thereby cutting the holes. The downward pressure being now taken
off the ram of the upper die, and the upward pressure being applied. thereto, such
lie is removed from out of the cylindrical portion of the lower die. The blank
older is freed from the cylindrical portion of the lower die and also tilted up.
The pressure, however, being continued upon the lower ram, the die plate is brought.
p sufficiently, far to throw the formed up blank out of the cylindrical portion of
be lower die.
It will be understood that, the punches will force the waste metal when the upper

page_text: die is down into their respective passage ways in the same. It will also be under-
stood that immediately upon the die plate being brought to the top of the
cylindrical portion, the spring supported stripper will free the formed up blank
from the punches when the blank can then be removed. Upon the pressure being
gradually removed from the lower ram the die plate will be brought down and
assume the position ready for the forming up of the next blank.
I shall next describe the means whereby the bead is formed on the free edge of
the rim of the pulley.
The upper die of the upper ram has affixed to it by means of suitable bolts a
supplemental die block. The ring secured within the cylindrical portion of the
lower die at the bottom is provided with an upwardly extending shoulder or flange
which has an annular groove made in the same next to and abutting the cylindrical
portion of the lower die.
The lower ram bas a die formed to correspond with the web of the pulley when
it is being formed up into shape from a sheet of metal by the upper die.
The web-holder is comprised preferably of an upper and a lower plate and a
central ring which may be of any determinate depth, this of course depending on
the width it is desired to make the rim of the pulley. The ring is preferably con-
nected to the upper and lower plates in step fashion although any other simple
means of connection such as a tongue and groove may be employed. The lower
plate is made to fit the die and the upper plate is made of such a shape so
that the web of the pulley when reversed will fit snugly upon such plate. The
operation in forming the bead on the free edge of the rim of the pulley is as
follows:-
Before the pulley is put into the press the free edge of the rim is turned
slightly inwardly. It is then placed in position on top of the web holder which is
bolder in the reversed position with the web uppermost so as to fit upon the web-
by the lower ram. The pulley is of course placed upon the web-
holder. The free edge of the rim extends down within the cylindrical portion.
Hydraulic pressure is exerted upon the upper ram and lower ram.
The pressure
upon the upper ram being the greater it will force down the lower ram upon its
seat on the ring. In bringing it down the inwardly turned edge of the rim is
guided by the grooves, thereby forming a perfect bead around the entire free edge
of the rin at a single operation. As the web-holder is of less diameter than the
pulley when the upper die is withdrawn and the lower ram forces the pulley back
again such pulley may be readily withdrawn.
In order to provide for the perfect forming of the bead without the pulley
being distorted or thrown out of shape it is absolutely necessary that such a
device as the web-holder must be provided and I find it extremely simple and
effective to provide a supplemental ring for such web-holder whereby pulleys of
different widths of rims may be beaded by simply providing other rings of
determinate width, this of course depending upon the width of the rim of the
pulley and the amount necessary to turn inwardly from the bead.
It will be understood that the web-holder might be made of a single plate
made to fit the face of the lower die and yet accomplish the object for which it is
designed.
1 shall next describe the means by which my pulley is crowned.
The circular base is made to conform to the shape of the web of the sheet metal
pulley and is provided with an annular upwardly extending flange within which
fits the bottom edge of the rim of the pulley.
The rim of the pulley is held in position at the top by a vertical adjustable
ring which is held in any suitable support and adjusted vertically by any suitable
means. An annular groove made in the bottom edge of this ring is designed to
overlap the top of the bead of the pulley. The ring has means, when the groove
is brought down upon the head of the pulley, to retain such ring in position so
as to securely hold the beaded edge of the pulley.
The forming die is provided with a number of expansible ring sections which

page_text: have a dove-tail groove formed preferably centrally within the inner concave of
the section into which extend the heads of screw-bolts which are screwed into the
lower tapered end of the forming die. The concare inner side of each section
is tapered to correspond to the tapered end of the forming die and the screw-
bolts have their heads parallel with the taper of the end. The outer contour of
each section is formed on an are corresponding to the are of the crown desired for
the rim of the pulley.
The forming die is hollow so as to permit of the hub of the pulley extending up
into the same.
There is also a recess made in the base so as to permit of this end of the hub
fitting into the recess and thereby allowing the web to fit snugly upon the base.
The inner end of each ring section described above is preferably bevelled.
On the pulley being placed in position the expansible ring sections are contracted
and the ring is first brought down so as to securely grip the upper beaded edge of
the pulley and is rigidly secured in such a position for the time being. The
forming die is now brought down and when the bottom of the expansible sections
reaches the web of the pulley upon the base the expansible sections of the ring
will be forced outwardly and in being so forced will gradually and very perfectly
form a crown to the pulley.
Inmediately upon the forming die being drawn upwardly again it will be seen
that the expansible sections will drop back into their contracted form upon being
relieved from the pressure of the base and therefore drawn out quite freely from
the now crowned pulley.
Should the crowning be not quite perfect seeing that there are spaces between
the expansible sections when they are drawn out, the pulley may be turned round
slightly and the forming die brought down again and the crowning of the pulley
will be perfectly completed.
In practice, however, I find it is not necessary in most cases to perform this
second operation.
When the sections are collapsed their peripheries do not form arcs of one and
the same circle but this is unimportant as during this period they are not being
utilized. When, however, they are brought down and expanded to their fullest
extent, the outer surface of each section forms an arc of the same circle and
thus provides for the perfect formation of the crown on the rim of the pulley.
Although I have described the sections as being adjustably attached to the
forming die it will of course be understood that these sections might be place
within the pulley and the die brought down so as to expand them and thus
form the crown.
Although I have described my press as applied to forming up the web and
rim of a sheet metal pulley integrally, it may be adapted for other work of a
similar nature.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
Improvements in Presses.
I, OLIVER WILLIAM KETCHUM, residing at 323 King Street, West, at the
City of Toronto, in the County of York, in the Province of Ontario, Canada,
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 :-
My invention relates to improvements in presses more particularly adapted

page_text: for the stamping or forming up of sheet metal pulleys and the object of the
invention is, first, to provide a blank holder for the sheet metal plate, by which
it can be securely held in position till the die of the upper ram is brought
down, secondly, to provide ready means of setting the different sizes of the
cylindrical portion of the lower die so as to form pulleys of different diameters,
thirdly, to provide a simple means whereby the central hole may be punched in
the web and minor holes punched around it for the purpose of securing the web
to the flange of the hub by suitable bolts and further to provide means for
forcing the formed up blank out of the cylindrical portion of the lower die,
fourthly, to design such a form of dies and apparatus as will upon one downward
stroke of the ram effectually form up an inwardly turned bead on the free edge
of the rim of the pulley, fifthly, to devise a simple, and efficient attachment to
the press whereby the rims of sheet metal pulleys may be readily crowned and
it consists essentially, first, of securing the blank holder upon suitable standards
and providing clamping. bolts which extend through the blank holder and
cylindrical portion of the lower die and are provided with slots at the lower
end into. which tapered keys are driven in order to securely hold the blank
between the biank bolder and the flange of the cylindrical portion of the lower
die, secondly, in forming annular grooves in the bed plate of the press and
providing corresponding annular downwardly extending projections in the bottom
of the cylindrical portion of the lower die to fit into one of such grooves, also in
providing radial grooves and bars one end of each bar being designed to be
clamped upon the top of the lower flange of the cylindrical portion of the lower die,
while the other end of each clamping, bar is clamped by the bolt upon a block so
as to thereby rigidly hold the cylindrical portion of the lower die upon the bed
plate, thirdly, in forming the die of the lower ram, the cylindrical punch and its
surrounding punches with a stripper head through which the punches extend and
which is supported upon spiral springs upon the top of the die, the upper die being
constructed and designed to co-act with the lower die and stripper-head, fourthly,
of securing to the upper ram of the press a die corresponding in form to the web
and forming on the stationary portion of the lower die an annular groove in which
the bead is formed, the pulley being supported upon the lower ram by a supple-
mentary ring of peculiar construction and the upper ram being designed to be
brought down against the pressure of the lower ram so as to force the edge of the
rim into and around the annular groove formed in the stationary portion of the die,
fifthly, in providing a circular base block with an annular flange for the reception
of the web and the bottom edge of the rim of the pulley and adjustable retaining
ring for the top of the rim of the pulley and a sectional expansion ring adjustably
attached to the ram so that when the ring is brought down it will pass within the
free edge or bead of the pulley and upon its coming against the web will be forced
outwardly so as to form the crown and the whole of the machine being otherwise
constructed and arranged as hereinafter more particularly explained.
Figure 1 is a sectional perspective view of my press intermediately broken away
near the top of the uppermost ram.
Figure 2 is an enlarged detail of the upper die, blank holder, also die and bed
plate, and bottom of the lower die and ram.
Figure 3 is an enlarged cross section through the head of the lower die showing
portions of the upper die and bottom of the lower die and ram.
Figure 4 is a detail of the stripper head.
Figure 5 is a sectional perspective view shewing the upper ram raised and the
pulley placed in position ready to be beaded.
Figure 6 is a similar view shewing both rams down and the pulley with the bead
formed on it..
Figure 7 is a sectional perspective view of a portion of the press as adapted to
form the crown shewing the ram raised and the expansion ring. collapsed.
Figure 8 is a similar view shewing the ram down and the expansion ring extended
so as to form a crown.

page_text: Figure 9 is a sectional plan shewing in full lines the position of the expansion
ring when extended and in dotted lines, the position when collapsed.
In the drawings like letters of reference indicate corresponding parts in each figure.
The frame of the press is comprised of the upper and lower I-beams A and B.
5 connected together by the standards rods C and the web D supported on the upper
I-beams by the minor standard rods E. Bare I-beams extending between the
I-beams B and supporting together with the beams B the hollow bed-plate' F.
B are channel beams extending between the I-beams B and located centrally
between the I-beams B¹
I shall first describe the means whereby my sheet pulley is formed up.
G is the uppermost hydraulic ram which is held within the cylindrical casing G
and is supplied with pressure through the pipe G². The cylinder G is suitably
supported in the web D. The lower end of the ram G extends into and is secured
in the centre of the web G'. The ram G and supporting standards are shown
intermediately broken away. (See Figure 1.)
H is the cylinder of the ram to which the upper die is attached. This cylinder
is shewn in perspective quarter section in Figure 1, suitably supported in the
cross frame H' extending between the upper I-beams A one only of which is shewn.
I is the plunger of the upper rain to which is connected, as hereinafter described,
the upper die. The plunger I is hollow and moves within the cylinder H. The
cylinder H has a hole made at the top into which fits the compression plug H³.
The plunger I is also closed at the bottom.
2 is a pipe leading through the cylinder H into the vertical opening 3, which is
connected by the horizontal passage way 4 and vertical passage way 5 to the interior
of the plunger I. The plunger I has an outwardly extending flange I' to which is
secured the laterally adjustable block 12 by means of the bolts i. are bracket-
shaped lugs extending out from the upper flauge of the adjustable block I* and
through which extend the set screws 23. The holes through which the bolts i
extend are larger than the bolts so as to permit of the lateral adjustment of the
block 12 by means of the set screws so as to bring the centre of the block I on
exact line of centre with the centre of the lower die.
28
1 is a die which is cylindrical in form and is attached by means of the internally
threaded hub I to the die holder 15. The die holder 15 is secured to the lower
flange it through its upper flange by the bolts . is a steel ring secured within the
bottom of the die holder, the inner diameter of the ring being slightly less than the
bole 17 through the die holder 1. are passage ways leading obliquely up through
the die holder to and through the flange. The steel ring has a series of round
recesses ¹ cut in the bottom and vertical holes 1, 2, are annular grooves cut in
the bottom of the die aud designed to form with corresponding projections on the
lower die the beads on the web of the pulley.
1º are cross beams attached to or forming part of the lower part of the plunger I..
One half of the cross beams 18 is shewn in Figure 1 the other half being on the other
side of the press.
I are rods which extend upwardly through the supporting beam H¹ into the
cross bar 10; is a plunger rod secured at the upper end in the cross bar. [10.
and having the lower end extending downwardly into the cylinder [1; I" is a pipe.
from which the water pressure is obtained. The parts from 1° to 1" are duplicated
on the opposite side of the machine.
G is a piston rod secured in the web G³ and extending down into a hole h¹ in the
compression plug H2. h is a suitable packing surrounding the rod G₁ at the top.
of the hole is a pipe leading into the hole h' and designed to exert an upward
pressure upon the rod G₁ through a channel in the cylinder when the water is.
urned on through this pipe. The web G³ is connected by the rods G' to the arnisj
t the blank holder supporting the frame J.
Jis the blank holder which is connected to the frame J by the bolts ..
K is the cylindrical portion of the lower die which is provided with an-upper
utwardly extending flange k and a lower flange ¹. The top edge of the cylindrical.

page_text: portion of the lower die is surrounded by a steel ring and the bottom edge of the
blank holder is also preferably surrounded with a steel ring. The blank holder is
brought down by the hydraulic ram G upon the top of the flange of the cylindrical
portion of the lower die, the circular blank having been first placed on the top of
the cylindrical portion of the lower die in the position shown in dotted lines in
Figures 1 and 2. As it is absolutely necessary that the blank holder should hold
the blank very firmly, I provide in addition to the hydraulic rain G which may not
have sufficient pressure to hold the blank secure enough, the bolts L which are held
in the blank holder and when it is brought down extend through the flange k of the
cylindrical portion K of the lower die. In order to securely grip the blank I
provide slots in the lower portion of the bolts and drive into them the tapered
feather keys.
fare a series of annular grooves formed in the bed-plate F. is an annular
projection formed in the bottom of the flange k¹ of the cylindrical portion K. The
cylindrical portion K is made with a central opening of sufficient diameter to form
up the size of pulley desired and consequently, the flange and annular
projections will be more or less distant from the centre. In Figure 1 the distance
shewn is the least distance and consequently, the annular projection A is nearest
the centre, but if the pulley to be formed up is of a larger diameter it will be
understood that the projection of a larger cylindrical portion K will fit into one
of the other grooves, this of course, depending on the size of the pulley to be formed
up. The diameter of the opening of the blank holder J as also the diameter of the
cylindrical die 1' will be of corresponding size.
fare radial reversed T-shaped grooves made in the circular bed-plate F, and
M are bolts, the heads m of which fit and are retained within the grooves. m³ are
clamping plates through which the bolts M extend, the bolts M being provided with
nuts m².
N are blocks which bridge the grooves. The outer ends of the plates m¹ rest
upon the blocks N and the inner ends upon the flange . By screwing the nuts m²
down upon their respective bolts M it will be seen that the plates m¹ will thereby.
securely hold the cylindrical portion K down upon the bed-plate.
O is the lower ram which moves within the cylindrical casing O' being supplied
with hydraulic pressure from the pipe o.
P is the supporting head. The lower die plate Q is supported upon the
bed-plate F.
R is the stripper or stripper head which is supported upon the flange p of the
head P by the spiral springs S. " are recesses formed in the stripper R and p' are
recesses formed in the bead P for the reception of the springs S which are of
sufficient length to permit of the requisite movement of the stripper. The stripper R
is provided with a suitable shoulder and is screwed into a central opening in the
die plate Q.
T is a punch which is screwed or otherwise secured in the head P. The punch T
is cylindrical and fits and moves vertically within the hole R' made in the stripper
head R and a corresponding hole of the ring forming part of the upper
die holder 1.
The web of the pulley is pressed or formed up upon the die plate Q by the upper
die 13 the die plate Q having an outer groove q which with the bead of the
upper die forms the bead at the juncture of the rim with the web of the pulley.
The die plate Q is also provided with annular projections q' which with the annular
grooves of the upper die 1³ form the annular beads in the web.
U are a series of punches surrounding the punch T secured in the head P and
extending upwardly through the stripper and conical minor dies V. The minor
dies V are screwed into corresponding boles made in the top of the stripper and are
designed to form up the conical bosses around the central hole of the web of the
pulley. The punches U which extend through the conical minor dies co-act with
the holes 1" in the upper die to punch holes out of the centre of the conical bosses
of the web.
1

page_text: The passage ways t° serve to conduct the
die plate Q.
waste discs puno
I" are slots formed partially out of the block I and die holder I between them.
The waste discs cut by the punch T out of the centre of the web are carried up
through the ring and opening 17 to the slots I" through which they may be pushed.
I shall now briefly describe the operation of my press in forming the pulley.
The blank is laid upon the top of the cylindrical portion K, and the pressure is
brought upon the ram G so as to bring down the blank holder J' upon the top of
the flange. If there is not sufficient pressure to grip the blank securely enough
the tapered feather keys may be pushed into the slots of the bolts L so as to
securely bind the blank holder J and cylindrical portion K of the lower die
together. The pressure is now brought upon the ram of the plunger I through the
pipe 2 so as to force the cylindrical die I down. As it is caused to descend it
presses upon the blank and gradually draws it out from between the blank holder
and flange of the portion K and presses down till the blank assumes the position
and form shewn in Figure 2. The lower ram during this period has no pressure
applied to it and the die plate Q remains at the bottom of the cylindrical portion K
of the lower die and rests upon the bed-plate F. Immediately upon the upper die
reaching the die plate Q pressure is applied to the lower ram and it is impelled
upwardly and forces the central punch T and the minor punches U through the
centre of the web and bosses of the web, respectively, thereby cutting the holes.
The downward pressure being now taken off the ram of the upper die and the
upward pressure being applied thereto, such die is removed from out of the
cylindrical portion of the lower die. The blank holder is freed from the cylindrical
portion of the lower die and also lifted up. The pressure, however, being continued
upon the lower ram O the die plate Q is brought up sufficiently far to throw the
formed up blank out of the portion K.
It will be understood that the punches will force the waste metal, when the
It will also be
upper die is down, into their respective passage ways in the same.
understood that immediately upon the die plate Q being brought to the top of the
cylindrical portion that the spring supported stripper R will free the formed up
blank from the punches, when the blank can then be removed. Upon the pressure
being gradually removed from the lower ram the die plate will be brought down
and assume the position shewn in Figures 1 and 2, ready for the forming up of the
next blank.
I shall next describe the means whereby the bead is formed on the free edge of
the rim of the pulley referring particularly to Figures 5 and 6.
13 is the upper die of the upper ram which has affixed to it by means of suitable
bolts a supplemental die block 6. K is the cylindrical portion of the lower die.
7 is a ring which is secured within the same at the bottom and provided with an
upwardly extending shoulder or Hange 9 which has an annular groove 10 made in
the same next to and abutting the cylindrical portion K.
Qis the lower ram, the die Q of which is formed to correspond with the web of
the pulley when it is being formed up into shape from a sheet of metal by the
upper die.
11 is the web-holder which is comprised preferably of an upper and lower
plate 12 and 13 and a central ring 14 which may be of any determinate depth,
this of course depending on the width it is desired to make the rim of the pulley.
The ring 14 is shewn preferably connected to the upper and lower plates in step
fashion although any other simple means of connection such as a tongue and groove
may be employed. The plate 13 is made to fit the die Q' and the plate 12 is made
of such a shape so that the web of the pulley, when reversed will fit snugly upon
such plate. The operation in forming the bead on the free edge of the rim of the
pulley is as follows:-
Before the pulley is put into the press the free edge of the rim is turned slightly
inwardly as indicated in Figure 5. It is then placed in position on top of the web
holder 11 which it will be noticed is brought up by the lower ram Q in the position
B

page_text: shewn in Figure 5. The pulley is of course, placed upon the web holder in the
reversed position with the web uppermost so as to fit upon the web holder, as shewn.
The free edge of the rim extends down within the cylindrical portion K. Hydraulic
pressure is exerted upon the upper ram and lower ram. The pressure upon the
upper ram being the greater it will force down the lower ram upon its seat on the
ring 7.
In bringing it down the inwardly turned edge of the rim is guided by
the grooves 10 around into the shape shewn in Figure 6 thereby forming a perfect
bead around the entire free edge of the rim at a single operation. It will be
noticed that as the web-holder is of less diameter than the pulley when the upper
die is withdrawn and the lower ram forces the pulley back again into the position
shewn in Figure 5, that such pulley may be readily withdrawn.
In order to provide for the perfect forming of the bead without the pulley being
distorted or thrown out of shape it is absolutely necessary that such a device as the
web holder must be provided and I find it extremely simple and effective to provide
a supplemental ring for such web holder whereby pulleys of different widths of rims
may be beaded by simply providing other rings like 14 of determinate width, this
of course depending upon the width of the rim of the pulley and the amount necessary
to turn inwardly from the bead.
It will be understood that the groove 14' which I show on the face of the upper
die at the circumferential edge might be used for turning the bead on the free edge
of the rim of the pulley if the pulley were reversed to the position shewn in Figure5.
It will be understood that the web-holder 11 might be made of a single plate made
to fit the face of the lower die and yet accomplish the object for which it is
designed.
I shall next describe the means by which my pulley is crowned referring
particularly to Figures 7, 8, and 9.
15 is the circular base which is made to conform with the shape of the web of the
sheet metal pulley. The base 15 is provided with an annular upwardly extending
flange 16 within which fits the bottom edge of the rim, of the pulley.
The rim of the pulley is held in position at the top by a vertical adjustable
ring which is held in any suitable support and adjusted vertically by any
suitable means.
17 is an annular groove made in the bottom edge of the ring J'
and designed to overlap the top of the bead of the pulley. The ring J' has means,
when the groove 17 is brought down upon the bead of the pulley, to retain such
ring J in position so as to securely hold the beaded edge of the pulley.
is the forming die which is provided with a number of expansible ring
sections 18. The expansible sections 18 have a dove-tail groove 19 formed
preferably centrally within the inner concave of the section into which extend the
heads of the screw bolts 20 which are screwed into the lower tapered end I of the
forming die 1. The concave inner side of each section is tapered to correspond
to the tapered end 11 of the forming die and the screw bolts 20 have their heads
parallel with the taper of the end I¹ (Figures 7 and 8). The outer contour of each
section is formed on an are corresponding to the arc of the crown desired for the
rim of the pulley.
The forming die 1 it will be seen is hollow so as to permit of the hub of the
pulley extending up into the same.
There is also a recess 21 made in the base 15 so as to permit of this end of the
hub fitting into the recess and thereby allowing the web to fit snugly upon the base.
The inner end of each ring section described above is preferably bevelled at 181
as shewn.
When the forming die and ring are raised into the position shewn in Figure 7,
the pulley may be placed in the position shewn in Figure 7. The expansible ring
section will now have been contracted to their least extent as shewn in this figure
and in dotted lines in Figure 9. The ring J' is first brought down so as to securely
grip the upper beaded edge of the pulley and is rigidly secured in such a position
for the time being. The forming die is now brought down and when the bottom
of the expansible sections reaches the web of the pulley upon the base 15, the

page_text: expansible sections of the ring will be forced outwardly and in being so forced
will gradually and very perfectly form a crown to the pulley as indicated in
Figure 8.
Immediately upon the forming die being drawn upwardly again it will be seen
that the expansible sections will drop back into their contracted form upon being
relieved from the pressure of the base and therefore drawn out quite freely from
the now crowned pulley.
Should the crowning be not quite perfect seeing that there are spaces between
the expansible sections when they are drawn out the pulley may be turned round
slightly and the forming die brought down again and the crowning of the pulley
will be perfectly completed.
In practice, however, I find it is not necessary in most cases to perform this
second operation.
When the sections 18 are collapsed their peripheries do not form arcs of one and
the same circle but this is unimportant as during this period they are not being
utilized. When, however, they are brought down and expanded to their fullest
extent as shewn in Figures 8 and 9, the outer surface of each section forms an arc
of the same circle and thus provides for the perfect formation of the crown on
the rim of the pulley. Although I show the sections adjustably attached to the
forming die it will of course be understood that these sections might be placed
within the pulley and the die brought down so as to expand them and thus form
the crown.
Although I show my press as applied to forming up the web and rim of a sheet
metal pulley integrally, it will of course be understood that it may be adapted for
other work of a similar nature.
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 :-
1. In a hydraulic press the combination of the upper ram and die, the two part
lower die with means for clamping said parts together to hold the edges of the
blank between them, and the plunger reciprocating through the bottom of the lower
die to free the completed blank, substantially as described.
2. In a press the combination with the cylindrical upper die suitably connected
to the ram or plunger I, and means for raising and lowering the plunger within the
cylinder, and the cylindrical portion of the lower die, and die plate, and means for
raising and lowering the die plate, of the blank holder, J', suitably bolted to the
frame, J, which has arms, 1, extending to the standard rod, C, and rods, G,
connecting it to the web, G', which is driven downwardly by the ram, G, and
upwardly by the piston rod, G', working in the hole, ', in the plug, H', as and for
the purpose specified.
3. In a press, the combination with the upper ram and die and the lower die
plate and cylindrical portion of the lower die having an upper outwardly extending
flange, of the blank holder, means for raising and lowering it and bolts extending
through the blank holder when it is brought down and through the top flange
of the cylindrical portion of the lower die so 3 to clasp them together as and for
the purpose specified.
4. In a press the combination with the upper ram and die and the lower die
plate aud cylindrical portion of the lower die having an upper outwardly extending
Hange, of the blank holder, means for raising and lowering it and bolts extending
through the blank holder when it is brought down and through the top flange of
the cylindrical portion of the lower die plate and having slots in the lower portion
of the bolts into which the feather keys are driven as and for the purpose
specified.
5. In a press the combination with the lower fixed die of the upper die having a
laterally adjustable block for securing it to the head of the ram as and for the
Durpose specified.

page_text: 6. In a press the combination with a lower fixed die of the upper die having a
laterally adjustable block for securing it to the head of the ram, the laterally
adjustable block being connected to the die by the bolts, 1, and to the bottom
flange of the plunger or ram, I, by the bolts, i, extending through the enlarged
holes in the upper flange of the block, and flange of the plunger, and the bracket
shaped lugs, , and set screws, 23, extending through the same to accurately center
the die as and for the purpose specified.
7. The combination with the cylindrical portion of the lower die having a
flange, k, and annular downwardly extending projections, k³, of the bed-plate, F,
having the annular grooves, f, made in it as and for the purpose specified.
8. The combination with the cylindrical portion of the lower die having the
Range, k, and annular downwardly extending projections, 43, of the bed-plate, F,
having the annular grooves, f, and the radial reversed T-shaped grooves, f¹, and
means for securing the flange, k', upon the bed-plate by means of bolts, the heads
of which are held within the radial grooves as and for the purpose specified.
9. In combination, the upper die having a ring provided with a series of
recesses or depressions in its under face and openings leading from the center of
said depressions through the die, the lower die having a series of conical raised
portions corresponding to said depressions and having central openings, and the
minor punches passing through said openings, substantially as described.
10. The combination with the upper die, having the ring, 7, surrounding the
central opening, of the die plate, Q, secured to the stripper, R, supported by the
springs, S, upon the flange, p, of the head, P, of the ram and the punch, T, secured
in the head, P, and designed to be brought up past the top of the opening R', of
the stripper into the ring, 7, as and for the purpose specified.
11. The combination with the upper die provided with the ring, , having the
recesses, 10, and the holes, ", of the minor dies, V, secured in the top of the spring
supported stripper and surrounding the central opening, R¹, and the punches U,
extending through holes in the conical minor die and designed to co-act with the
holes,, in the ring, , as and for the purpose specified.
12. The combination with the upper die having the central opening, I', and
ring, 7, at the bottom thereof and the lower die plate and punch arranged as
specified, of the openings, 114, extending laterally from the central opening as and
for the purpose specified.
13. The combination with the upper die and ring, 17, recesses, 10, and the
holes,, surrounding the central opening, of the die plate, Q, having the minor
conical dies, V, and punches, U, all arranged as specified, of the passage ways, 1³,
extending up from the holes, ", as shown and for the purpose specified.
14. A die for beading sheet metal pulleys comprising the lower die portion
having the annular groove, the rim retaining ring adjacent to said groove, the web
support and the plunger for forcing the pulley --
བལཔས-མgལྤ--པོ
enter said annular groove, substantially as described.
15. In combination the lower die having the annular groove, the rim retaining
ring, the plunger, and the web support of less diameter than the rim, substantially
as described.
16. The combination with the upper die block and lower die block moveable
within the cylindrical portion of the lower die and means for supporting the pulley
rigidly upon the lower die block so that the rim extends within the cylindrical
portion, of the ring secured within the cylindrical portion and forming a seat for
the lower die block and having an annular groove formed in the top of the upper
shoulder of the ring abutting the cylindrical portion of the die, as and for the
purpose specified.
17. The combination with the upper die block and lower die block and web or
blank holder 11 the upper plate of which conforms to the reversed position of the
web and lower plate of which conforms to the shape of the die block, of the
cylindrical portion, inner bottom ring having the annular groove formed at the top
abutting the cylindrical portion, as and for the purpose specified.

page_text: 18. The combination with the upper die block and lower die block and web-
holder comprised of the upper plate, lower plate and central ring, of the cylindrical
portion, inner bottom ring having an annular groove formed at the top abutting the
cylindrical portion, as and for the purpose specified.
19. A die for crowning sheet metal pulleys comprising the base or support,
having an annular flange for retaining the lower edge of the rim against outward
displacement, the clamping ring having an open centre and a flange for retaining
the other edge of the rim, and the die arranged to pass through the open centre
of the clamping ring to crown the portion between said ring and base, substantially
as described.
20. In combination the base for supporting the pulley, the clamping ring for
engaging its upper edge, and the forming die co-acting therewith, said forming die
comprising a tapered plunger head with a series of forming sections having sliding
connection with said head, substantially as described.
21. The combination with the circular base 15, surrounded by an upwardly
extending flange, 16, of the tapered hollow forming die I", provided with screw
bolts 20, secured near the bottom end of the die and the expansible ring sections 18,
provided with grooves 19, as and for the purpose specified.
22. The combination with the circular base 15 flange 16, of the ring J', formed
as specified, the forming die 1, provided with expansible ring sections 18,
suitably connected and adjustable upon the forming die as and for the purpose
specified.
23. The combination with the circular base 15 of the hollow forming die 11,
provided with a tapered end 116, the bolts 20, expansible ring sections 18, provided
with grooves 19, designed to be adjustable upon the heads of the bolts 20, and the
bevelled ends 18¹ arranged as and for the purpose specified.
1 1005
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.