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Патент USA US2410581

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Nov. 5,- 1946.
R. J. HEss ETAL
_
l 2,410,581
HYDRAULIC PRESS`
, ÍFiled may 15, 1944
`
INVENToRs.
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Patented Nov. 5', 17946l
l-
2,410,581
2,410,581
HYDRAULIC PRESS
Relza J. Hess and Frank Gr. Cizek, Chicago, Ill.,
assignors to American Steel Foundries, Chicago,
Ill., a corporation of New Jersey
Original application September 13, 1943, Serial
No. 502,124. Divided and this application May
15, 1944, Serial No. 535,620
12 Claims. (ci. is-ie)
2
Our invention relates to presses and more par
(Figure l), and a cover 42 is provided for-the
ticularly to an hydraulic slugging or briqueting
cylinder 34, said cover being pivotally connected
press for compressing material into a “slug” or
by means of a pin BE to a lug 48' on the cross piece
22 of the link 2d, said lug having an arcuate sur
“brick” for manufacturing use. The subject mat
ter of the present application is divided out of a
copending application Serial No. 502,124, iiled
September 13, 1943, in the United States Patent
face in thrust engagement at 5i) (Figure 1) with
complementary bushing or shoe 5l secured in
the top of the cover 42.
The cover 42 is con
nected to the cylinder 34 and is opened and closed
by means of the link 20 as shown and described
Frank G. Cizek, for Hydraulic press.
, The general object of the present invention is 10 in detail in said copending application. It willV
be understood that, if desired, shims may be uti
to design a press in which means is utilized for
lized at 52 (Figure l) to adjust the height of the
adjusting the stroke of the main ram which recip
forming or material cylinder 311, thus creating
rocates within the material cylinder of the press.
any desired initial tension between said cylinder
By this means the head of the main ram is posi
tioned at a predetermined point within the mate l5 and the cover ¿l2 as the latter is urged to closed
Oñîce in the joint names of Relza J. Hess and
rial cylinder, thus predetermining the amount of
position.
.
material which may be inserted therein prepara
tory to a slugging or briqueting operation.
A more speciñc object of our invention is the
Integrally formed Within the frame member 2l
described. Our invention comprehends an ar
rangement in which an auxiliary ram extends
and ßlb, respectively, adapted to be connected
is a main ram cylinder 55 within which the main
ram or piston 60 is reciprocal by means ofv hy
provision of novel hydraulic means for adjusting 20 draulic fluid, such as oil, supplied to said cylinder
58 by means of advance and pull-back pipes Gla
or controlling the stroke of the main ram as above
through a valve casing 63 to a supply line b5 and
a relief or exhaust line S1, a valve element 69
into the main ram cylinder and abuts the adja
cent extremity of the main ram, said auxiliary 25 being rotatable within the casing 63 `so as to place
either of the pipes ßla or @Ib in communication
ram being reciprocal Within an auxiliary cylinder
with the supply line b5 and to simultaneously
to which hydraulic ñuid is supplied under pres
place the other pipe in communication with the
sure for the purpose of adjusting the initial posi- ~
relief line 5l. It will be understood that the valve
tion of the main ram within the main ram cylin
der and thereby limiting the stroke of the main 30 G3, 69 is diagrammatically illustrated inasmuch
as it is a conventional structure. The head 62
ram for the purposes above described.
of the ram iii) is thus reciprocated within the
In the drawing:
.
liner Si! secured in any convenient manner Within
Figure 1 is a side elevation, partially in section,
the material cylinder 343, to compress into a slug
of the upper half of a press embodying our inven
tion, and Figure 2 is a side elevation, partly in 35 or brick therewithin the associated material
which is inserted into the top of the material
section, showing the lower half of said press, in
cylinder 34 in the manner hereinafter described.
combination with a hydraulic circuit for actu
Our invention comprises novel hydraulic means
ating the main ram.
for adjustably controlling the stroke of the ram
Describing our invention in detail, the press
comprises a frame member, generally designated 40 6€). To achieve this control, an auxiliary cylinder
66 is mounted by spaced bolts 63, E6 on the lower
2, having intermediate its upper and lower ex
end or head 'l2 of the main ram cylinder 5S, .and
tremities an annular support web 4 adapted to
an auxiliary ram 15B is reciprocal Within the aux
support the press upon a foundation fragmen
iliary cylinder 66, the upper end of said ram l!)
tarily indicated at 6. At opposite sides thereof
the member 2 is provided with spaced jaws or 45 extending through the head 12 of the main ram
cylinder 58 for engagement at ‘M withthe lower
brackets 8 and In aifording pivotal connection
end of the main ram ESB. Pressure huid, such as
by means of pins I2 and I4, respectively, to- the
oil, is supplied to the auxiliary cylinder 555 by
spaced arms I6 and I8 of the cover link, generally
means of a supply pipe 'l5 equipped with a suitable
designated 2t, said link comprising a cross piece
22 extending` between the arms l5 and I3 and 50 shut-oli valvev 18.
It may be noted that suitable packing means
pivoted thereto adjacent the upper extremities
Si! is provided to prevent escape of actuating fluid
thereof by means of trunnions 25, 25.l
from the upper end of the main cylinder 53„and,
A forming or material cylinder 34 is secured
likewise, suitable packing means d2 is provided
to the member 2 by means of a plurality of tension
rods or bolts, one of which is indicated at 35 55. to prevent escape of the actuating fluid from the
2,410,581
l lower end of the main cylinder 53. Suitable pack
ing means 84 is also provided to prevent escape
of actuating fluid from the upper end of the
auxiliary cylinder 66.
In operating our novel press, the cover 42 is
moved to open position by means of the link 28,
and iiuid is then admitted to the auxiliary cylin
der 66 through the valve 18 and the pipe 16 until
the main ram 60 is moved upwardly by the aux
iliary ram 'IB to a predetermined initial position 10
within the material cylinder 34, thus predeter
mining the amount of material which may be
inserted or poured into the top-of the material
cylinder. 'I'he lowest initial position of the main
ram 5D is illustrated in solid lines in Figure l,
and the highest possible initial position is illus
trated in dot and dash lines in said figure.
_
" '_' Si
~" Y
site end of said ram, a source of hydraulic pres
sure fluid connected to said main cylinder for
reciprocating said ram within both of said cyl
inders, an auxiliary ram cylinder having a rela
tively small diameter with respect to that of said
main cylinder, an auxiliary ram within said aux
iliary cylinder and positioned to abut with said
main ram, and hydraulic duid means Within said
auxiliary cylinder for advancing said auxiliary
ram to a predetermined position for limiting the
stroke Yof said main ram, said main and auxiliary
cylinders being at all times closed against com
munication with respect to each other.
3. In an hydraulic press of the class described,
a material cylinder, means for closing one end
thereof, a ram having a head on one end thereof
‘ reciprocal Within the opposite end of said cylin
When the main ram 60 has assumed the de
der, hydraulic motor means for reciprocating said
sired position within the press cylinder 34, the
ram, a relatively small diameter auxiliary ram
valve ‘18 is closed. The material to be compressed 20 positioned to abut with the opposite end of said
is then inserted or poured into the top of the
main ram, and hydraulic motor means independ
material cylinder` 34,.and thereafter the cover is
ent of said first-mentioned means for urging said
urged to closed position as illustrated in Figure 1.
auxiliary ram against said main ram in the di
Pressure fluid is .then admitted to the main ram
rection axially thereof and thereby moving said
cylinder to urge- the main ram upwardly, thus 25 head to a predetermined point-within said cyl
compressing the material within the material
inder for predetermining the amount of material
cylinder 34.
»
As will be apparent, any suitable means may be
provided, if desired, to evacuate air from the form
ing or material cylinder, priorto the compressing
operation; however, such-means is no part of the
present invention and is therefore not illustrated.
, After the material within the material cylinder
which may be inserted within >the first-mentioned
end thereof.
‘
Í
4. In an hydraulic press of the class described,
a material cylinder, means for closing one end
thereof, -a ram having a head on one end thereof
reciprocal within the opposite end of said cylin
der, hydraulic motor means for reciprocating said
34 has been compressed to the desired compact
ram, a relatively small diameter pistonlike mem
ness, the main ram 60 is moved downwardly by 35 ber positioned to abut with the opposite end of
means of actuating fluid in the main ram cylinder
said ram, and means‘at all times independent of
58 to release the pressure against the slug and
said motor means for moving'said memberY toward
the cover 42, and thereafter the cover is opened
said material cylinder and .therebylmovin'g said
and the slug Ais ejected from the upper end of »the
head to a predetermined point within said cyl
press cylinder by the ram 60. The main ram 60 40 inder for predetermining the amount of material
is then urged to its lowest and predetermined po
which may be inserted within said iirst-mentioned
sition against the upper end of the auxiliary ram
end thereof.
'
" "
Í
‘
l0, and _the press is ready for another cycle.
5. In an hydraulic press ofthe class described,
Pressure on the main ram 60 as it is urged to
a material cylinder, a main ram having a head
.closed position never exceeds the pressure on the 45 at one end thereof received within said cylinder,
auxiliary ram 10, as will be readily understood.
a main ram cylinder receiving the opposite' end of
It is to be understood that we do not wish to
said ram, a source of pressure iluid connected to
be limited by the exact embodiment of the device
said main cylinder' for reciprocating said ram
shown which is merely by way'oi illustration and
within both of said cylinders, .a relatively'small
not limitation as various and other forms of .the 50 diameter auxiliary ramV cylinder, an auxiliary ram
device will, ofcourse, be apparent to those skilled
in the art without departing from the spirit of the
invention or .the scope of the claims.
We claim:
.
within said auxiliary cylinder positioned to abut
with said main ram and separable therefrom, and
hydraulic fluid means within said auxiliary ,cyl
inder for advancing said auxiliary ram to a pre
1. In an hydraulic press, a material cylinder 55 determined position, thereby limiting the strokev
open at its lower end, a cover for opening and
of said main ram Within said material cylinder,
closing the upper end of said cylinder, a main
ram cylinder therebeneath, a vertical ram within
said main cylinder, a source of hydraulic pressure
said main and auxiliary cylinders being at all
times sealed against intercommunication,
6. In an hydraulic press ofthe class described,
fluid .connected to said ram cylinder for recipro 60 a material cylinder open at one end thereof, a
eating said ram within both of said cylinders, an
cover for opening and closing the opposite. end
auxiliary ram cylinder beneath said main cylinder
thereof, a main ram having ahead at one end
and sealed at all times against communication
thereof received within said cylinder, a main ram
therewith, an auxilary ram within said auxiliary
cylinder receiving the opposite end of -said ram,
cylinder positioned to abut with the lower end of 65 hydraulic ñuid means in said main cylinder for
said main ram, and a source of hydraulic pressure
reciprocating said ram within both of said cyl'
fluid connected to said auxiliary cylinder for mov
inders, a relatively small diameter pistonlike>
ing said auxiliary ram upwardly to a .predeter-~
member extending into said cylinder and posi
mined position for limiting the stroke of said
tioned -to abut said opposite end, and means en-A
main ram.
.
A
70 tirely independent of said ñrst-mentioned means
2. In an hydraulic press, a material cylinder
for advancing said member into said ram' cyl
open at one end thereof, a cover for opening and
inder axially thereof, thereby limiting the stroke
closing the opposite end thereof, a main ram hav- '
ing a head at one end thereof received within said
cylindena main ram cylinder‘receiving theoppo
ofsaìdram.
'
"
'
^'
"
'
7. In an hydraulic press, a main ram cylinder,
a main ram therewithin, hydraulic vfluid 4means
2,410,581
5
for reciprocating said ram Within said cylinder,
6
thereby moving said head to a predetermined
point within said cylinder.
’
a relatively small diameter auxiliary vcylinder
10. In an hydraulic press, a .cylinder open at
spaced from said first-mentioned cylinder, an
both ends thereof, a cover for closing one end of
auxiliary ram in said auxiliary cylinder, hy
draulic fluid means for reciprocating said aux Ul said cylinder, a ram reciprocal Within the oppo
site end of said cylinder, means for reciprocating
iliary ram within said auxiliary cylinder, the ad
said ram, and an auxiliary hydraulic device inde
jacent ends of the respective rams being posi
pendent of said means and including a ram mem
tioned to abut with each other, whereby the stroke
ber engageable with said first-mentioned ram for
of said main ram is limited by the position of said
auxiliary ram, said main and auxiliary cylinders lO adjustably controlling the stroke thereof.
11. In an hydraulic press, a main ram cylinder,
being at all times closed against intercommuni
a
substantially vertical main ram reciprocal
cation.
,
therewithin, an auxiliary ram cylinder, an aux
8. In an hydraulic press of the class described,
iliary ram in said auxiliary cylinder, the upper
a material cylinder open at one end thereof, a
end of Said last-mentioned ram being positioned
cover for opening and closing the opposite end
to bear against the lower end of said main ram
thereof, a ram having a head at one end thereof
for limiting the stroke thereof, and a source of
received Within said cylinder, a ram cylinder re
ceiving the opposite end of said ram, hydraulic
pressurefluid connected to each cylinder inde
pendently of the other for actuating the asso
ñuid means in said ram cylinder for reciprocating
said ram within both of said cylinders, and an 20 ciated ram.
12. In an hydraulic press, a main ram cylinder,
auxiliary hydraulic device entirely independent
a main ram reciprocal therewithin, an auxiliary
of said means and operatively connectable to said
ram cylinder, an auxiliary ram in said auxiliary
main ram for limiting the length of its stroke
cylinder, said last-mentioned ram being posi
Within said ram cylinder.
9. In an hydraulic press of the class described, 25 tioned to bear against said main ram for con
trolling the stroke thereof, and means for actu
a material cylinder, a ram having a head on one
ating each ram independently of the other ram
end thereof reciprocal within said cylinder, hy
comprising a source of pressure ñuid connected
draulic motor means for reciprocating said ram,
to each cylinder, each of said cylinders being at
a relatively small diameter auxiliary ram posi
tioned to abut with the opposite end of said main 30 all times closed from communication with lthe
other cylinder.
ram, and hydraulic motor means entirely inde
RELZA J. HESS.
pendent of said inst-mentioned means for urging
FRANK G. CIZEK.
said auxiliary ram against said main ram -and
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