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Патент USA US2120202

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June 7, 1938.
F. H. H, FOSS
> 2,120,202
LocK Ron OPERATING DEVICE
Filed May 11, 1935
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June 7, 193s. ‘
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F, H_ H. 'Foss' '
LOCK ROD OPERATING DEVICE
Filed May 11, 1935v
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2,120,202
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3 Sheets-Sheet 2
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June 7,1938.
F_ H H FOSS
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2,120,202
LOCK RODy OPERATING DEVICE
Filed May 11, 1935v
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Patented June- 7, 1.938 l ~
p 2,120,202y
UNITED >s'rA'rlss PATENT- OFFICE
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2,120,202> ‘
Loox non .OPERATING nevica
Ferdinand H. H. Foss, Chicago," Ill.
Application May 11, 1935, Serial No. 21,067 '
12 claims.
(Cl. 2MP-2Q)
’I'his invention relates to improvements in lock
handling charging boxes in the charging of ma
operatingl device with the vmanual operating ,
means omitted for clearness;
Figure 3 is a rear view of the devicev shown in
terials into melting furnaces.
Figure
rod operating devices for use on machines for
'
The boxes ñlled with materials are engaged one
at a time by the charging machine, locked in
position, then lifted and `advanced into the fur
nace.
.
y
.
_
manual operating means;
'
.Figure 5 is .ahorizontal sectional View taken
Rotation of the box» discharges its con
tents, whereupon it iswithdrawn from the fur
- substantially along line'5-5 of Figure 3;
10 nace, lowered-onto a car or other support and
disengaged from -the charging machine.
2;
Figure 4_ is a sectional view taken substantially
along line 4_4 of' Figure 3 >and showing the
The
locking rod may be manually actuated or oper
of ' Figure 3 and shows the signal indicating
means;
._ ated by electric power-means and is used for the
.
Figure` 6 is a sectional view taken on line 8_8
y
.
.
Figure 7 is -a sectional view illustrating the
position of the device for locking acharging box
purpose of preventing the box from becoming dis
15 ~ engaged from the ram of the charging' machine . to the ram head; and
during the above operations. It is essential that
the charging box be securely locked to the ram
during said operations and to obtain that result
it is necessary that the lock rod be securely held
20 in extreme forward position throughout the
period of engagement of the ram head with the
charging box. It is~ also essential that the lock
rod be pulled entirely out of the box andback
into the ram so that the ram maybe released for
25 handling the next box.
_
'I'he object of the invention is to provide an
30
tion with a furnace- Ill, which may comprise an
electric, open hearth or any other type of furnace
for reducing ores or other materials to a molten
state. _The charging machine is mounted for
movement on parallel tracks Il so ~that the same
maybe positioned in front of a number of fur
manually or electrically operated and which will
naces for charging the same successively. A ram
embody yielding means for thrusting the lock rod
forward into locking position, although positively
actuating the rod for releasing the charging box.
I2 having a head |3is supported by the machine
at'il for pivotal -movement, whereby the ram may 30
elevate or -lower the charging box >I5 moved into
The yielding means insures against damage -to
the device and in the event the ram is advanced
yposition'by the car I6'. " The ram is also capable
or is otherwise clogged..
'
With these and other objects in view’the in
vention may consist of certain novel features 'of
construction and operation, as will be more fully
described and particularly pointed out in the
specification, drawings and claims appended
hereto.
,
'
»
In the drawings which illustrate an embodi
ment of the invention and wherein like reference
characters are used to designate like parts
55
Referring to the drawings, particularly Figure .
1, a charging machine 9 embodying the operat 20
ing device of the invention is shown in associa
improved lock rod operating device that can be
_without the box attached and with the lock rod
35 protruding 'beyond the ram head and forcing the
end of the lock rod against the furnace or other
solid obstruction, or in the event the opening in
the charging box is not properly aligned with the
rod, or the opening becomes filled with material
4
Figure 8 is a wiring diagram showing the elec
trical 'connections and contacts for the signal
of travel forwardly and rearwardly as the carriage
I1 supporting the- ram, has movement longitudi
nally of the charging machine.
35
'
When a charging machine and a box contain
ing the materials to be delivered to the furnace
I0 are properly positioned in front of said fur
nace, the headfof the ram is associated with the
Q.box and the lock rod i8 extending through the
ram is given a forward thrust to securely hold the
box to said ram.. 'I‘he charging machine can now
be operated to lift the box from its supporting
car, locate t e same'within the furnace where it
is caused to scharge its contents. whereupon the 45
box is withdrawn and- replaced on the car. 'I_‘he
lock rod I8 is thenw'ithd'rawn and the operation
repeated with the sam'e furnace or with succes-sive furnaces.
\
,
The device for actuating the lock rod to alter 50
Figure 1 is a schematic illustration of a melting l nately lock a charging box tothe ram head and
furnace and charging machine, the latter em
release the box> is more Iparticularly shown in
bodying the improved lock rod operating device Figures 2 to 5 inclusive, and consists of a frame
of the invention;
.
20 adapted to be suitably secured to the end of
Figure 2 is an elevational view of the lock rod the ram opposite the head I3 and which is pro
2
2,120,202
vided with a plurality of spaced depending sup
ports 2|, 22 and 23 respectively. The support 22
is bifurcated, forming spaced arms providing
one-half a revolution. Thusassuming that the
lock rod is in a released position, the rotation of
the operating shaft imparts a 180 degree move
ment to the crank, locating the lock rod in its for
ward or locked position. Deenergization of the
bearings 24 and 25 for journalling shafts 26 and
21 respectively. The shaft 26 is journalled at its
opposite end by bearing 26 provided by the sup . solenoid will release the plunger which falls on
port 2 I. The opposite end of shaft 21 is journalled portion 53, lifting stop pawl 5| and causing the
by bearing 30 provided by support 23, said shaft holding pawl 56 to engage the teeth on the large
`being formed to provide a crank 3| between said ratchet 48, holding the shafts against rotation 10
due to force applied against-the end of the lock
10 bearings.
Figures 5 and 7 show the means for connecting rod.
The position of the parts as above described is
the crank to the operating rod I8 which consists
of a ball portion 32 held by a socket clamp 33 clearly shown in Figure '1 where the ram head |3
has engagement with portion I9 on the charging
havingforme'd integral therewith a yoke provid
ing spaced parallel guides 34. A block 35 is box I5 and the lock rod is in forward position. 15
mounted for movement within the spaced guides the same extending within opening |8a in the
charging box, locking the box to the ram.
34 and connects with the crank 3|. A bolt 36 ex
When the charging machine has caused the
tends through the end of the yoke integral with
contents
of the box to be discharged to the fur
clamp 33 and is threaded into said block. The
nace ||| and the box has been replaced on its 20
20 projecting end of the bolt receives the coil spring
31 and which is confined between the end of said supporting car |6, the solenoid 40 may -be again
yoke and washer 38, being held in position on energized, actuating plunger 4| and pawl 46 to
the bolt by the adjustable nut 39. Rotation of rotate shaft 26 one-sixth of a revolution.
'I‘he operating shaft 21 is caused to rotate one
the operating shaft 21 will therefore alternately
half of a revolution, turning the crank 3| through 25
thrust
the
lock
rod
forward
into
locking
posi
25
tion and rearwardly to a released position, the a 180 degree are, whereupon the lock rod will be
structure above described yieldingly thrusting the withdrawn and the box released.
A feature of the invention resides in the pro
lock rod forward and thus guarding against dam
age in the event forward movement of the rod vision of means connecting the rod |8 with the 30
crank so that it is given a yielding thrust in the
30 is impossible.
The frame 20 supports a solenoid 40 having a forward direction to prevent damage in the event
plunger .4| provided with a bifurcated depending the opening in the charging box is clogged or
end apertured for receiving the pin 42. Said pin when the parts are not properly aligned, although
extends beyond the sides of the plunger and rides the rod |8 is positively actuated to released posi
within'elongated slots 43 provided in the auxiliary tion.
The shaft 26 journals a sleeve 60, having a
support 44 and the wall 45 of support 2|. 'I‘he
bifurcated
arm 6| connecting with rod 62, pro
pin 42 provides a bearing for pivotally supporting
viding manual means for operating said device.
the depending pawl 46 which is positioned be
tween the bifurcated ears of the plunger 4| and As shown in Figure 4 the sleeve 60 provides a
lever 63 to which is pivotally secured at 64 a pawl 40
40 provided with a weighted portion 41 integral
therewith and tending to maintain the pawl in 65. Said pawl _has engagement with the teeth
contact with a large ratchet 48 suitably secured of ratchet 48 and rotation of the ratchet and
to shaft 26, as shown in Figure 5. Said large shaft 26 results when the sleeve is oscillated by
ratchet is formed integral with ,a small ratchet manual actuation of rod 62. The means for
manually actuating the lock rod is independent 45
45 wheel 50, having its teeth directed opposite to the
teeth of ratchet 48. A stop pawl 5| supported of the electro-magnetic means and in the event
said means fails, operation is assured as the man
for 'pivotal movement by pin 52 extending in
wardly from the wall 45 is adapted to engage ual mechanism is always available and ready for
with the teeth of the small ratchet 50 and is use.~ It will be seen that when the shaft 26 is
provided
with a portion 63 adapted to contact rotated by the solenoid, pawl 65 ldles over the
50
with the end of plunger 4|, the weight of the teeth of ratchet 48 and when the manual means
plunger lifting the stop pawl free of ratchet 50. is employed to rotate the shaft, it will be seen
that the pawl 46 idles over the teeth of said
To stop pawl 5| is pivoted at 54 a secondary hold
ing pawl 56 which is located over and adapted ratchet. In order to indicate to the operator the
respective position of the lock rod, the invention 55
55 to contact the large ratchet 46. It will, therefore,
be seen that when the-plunger is up out of provides signal lights. as shown in Figure 8, a
contact with portion 53. the stop pawl 5| is'in red light 66 to indicate a locked position and a
engagement with the small ratchet 50 while the ' green light 61 to indicate a released position.
holding pawl 56 is in engagement with the large The lights are connected in circuit with any suit
able source of power and with the contacts 16,
60 ratchet 48. 'I'he shaft 26 is therefore securely
held against inadvertent rotation, other than 1| and 12. A drum 13 of any suitable insulating
that imparted to the shaft by actuation of pawl material is fixed to the end of shaft 21 and is
locked within the signal housing 14 fixed to the
46 by upward movement of the plunger.
When the solenoid 40 is energized, plunger 4| depending support 23 of the frame 20. Contact 65
plates 15 and 16 are fixed to the drum in dia
65 will be caused to move upward. whereupon pawl
46 will engage teeth of ratchet 48 -rotating the metrically opposed positions thereon, the said
shaft 26 while simultaneously allowing stop 5| plates also being located so that one will close
the circuit between contacts 10 and 1| and the
to drop down in contact with ratchet 50. Actu
other will close the circuit between contacts 1|
ation of pawl 46 is sufficient to rotate the shaft
and 12. When the ñrst mentioned contacts are 70
one-sixth of a revolution. This rotation is lim
ited to one-sixth of a. revolution by the stop pawl closed by plate 15, as shown in Figure 5, the red
5| engaging the teeth of ratchet 50. However, a signal 66 is lighted indicating that the lock rod
gear 51 of large diameter is fixed to the end of is in forward or locked position. In like manner
shaft 26 and meshes with a small gear 58 fixed the green signal 61 is lighted when contact plate
to the operating shaft 21 for rotating said shaft 16 closes a circuit through the contacts 1| and 12.
3
2,120,202
An auxiliary holding device for the operating
shaft 21 is provided by the disk 18 ñxed to the end
of shaft 2ï which is located within the signal
housing. Said disk is notched at diametrically
opposite points, Figure 6, said notches receiving a
spring-energized detent 8U. The detent engages
one of the notches depending on the position of
the lock rod and aids in holding the same in
place against the action of the weighted clamp
10 33 tending to turn the operating shaft 2l.
The invention is not to be limited to or by de
tails of construction of the particular embodi
ment thereof illustrated by the drawings, as
various other forms of the device will of course
15 be apparent to those skilledv in the art without
departing from the spirit of the invention or the
scope of the claims.
I claim:
'
crank provided by said shaft and connecting with
the rod, a second shaft for driving the operating
shaft, a ratchet wheel on said second shaft, and
a solenoid actuated pawl engaging the ratchet
wheel to rotate the same upon energization of the
solenoid.
>
8. In a device of the kind described, the com
bination with a lock rod, of an operating shaft,
a crank provided by said shaft and connecting
with the rod, a second shaft for driving the op 10
erating shaft, a ratchet wheel on said second
shaft, a solenoid actuated pawl engaging the
ratchet wheel to rotate the same upon energiza
tion of the solenoid, and signal' means for indi
cating the position of the lock rod.
15
9. In a lock rod operating device, the combina
tion with a frame providing depending supports,
shafts journalled ~by said supports and operative
l. The combination with ~a charging device ly connecting with each other, a ratchet wheel
20 having a. ram for handling charging boxes, of a' fixed to one shaft, a solenoid actuated pawl for 20
rotating the ratchet wheel, a crank provided by
lock rod extending through the ram for secur
ing the box to one end thereof, and means at the said other shaft having connection with a lock
opposite end of the ram for actuating the> rod,_ rod, and signal means operated by said second
said means yieldingly thrusting the rod forward shaft for indicating the position of the lock rod.
10. In a lock rod operating device, the com 25
into locking position but positively- actuating the
bination with a frame providing depending sup
rod to a release position.
.
ports, shafts journalled by said supports and op
2. In a device of the kind described, the com
>bination with a lock rod, of an operating shaft, eratively connecting with each other, a ratchet
a crank provided by said shaft, said crank having wheel fixed to one shaft, 'a solenoid actuated
30 connection with the rod, electro-magnetic means pawl for rotating the ratchet wheel, a sleeve ro 30
tatable on said shaft and carrying a pawl en
for rotating the shaft and thus the crank, where
gaging with the ratchet wheel, manual means for
by the lock rod may be located in locked or re
leased position, and signal means associated with oscillating the sleeve to rotate the shaft, and a
35
said shaft for indicating the position of the rod.
crank provided by the other shaft having connec
3. In a device of the kind described, the combi
nation with a lock rod, of an operating shaft, a
tion with a lock rod, said solenoid and manual 35
means for rotating the shaft to locate the lock
rod in locked or released position being inde
crank provided by said shaft, said crank having
connection with the rod, means for rotating the
shaft and thus the crank to locate the rod in
40 locked or released position, and signal means as
sociated with said shaft for indicating the posi
tion of said rod.
4. In a device of the kind described, the com
bination with a lock rod, of an operating shaft,
45 a crank provided by said shaft, a yoke connect
ing with the rod and associated with the crank,I
a block on the crank adapted to slide within the
pendent of each other.
,
11. In a device of the kind described, the com
bination with a lock rod for locking a ram to a
charging box, of a shaft having connection with 40
said rod, a ratchet wheel fixed to said shaft, a ver
tically reciprocating plunger having a pawl en
gaging the ratchet wheel to cause rotation there
oi’ upon upward movement of the plunger, elec
tromagnetic means producing upward movement
of the plunger when energized, said plunger de
yoke, resilient means holding the block to the scending by gravity when- the electromagnetic
end of the yoke whereby pressure against the end meansis de-energized, and -a stop pawl operative
of the lock rod compresses the resilient means, to limit the rotation of the ratchet wheel by up
and means for rotating the shaft to locate the ward movement of said plunger, said plunger 50
rod in locked or released position.
.
5. In a device of the kind described, the com
bination with a lock rod, of an operating shaft,
55
a crank provided by said shaft, a yoke having uni
versal connection with the rod, means mounting
the yoke on the crank and adapted to slide with
in the yoke, a coil spring holding said means to
the end of said yoke whereby pressure against
the end of the lock rod compresses the coil spring,
when in lowered position rendering the stop pawl
inoperative.
\
.
-12. In a device of the kind described, the corn
bination with a lock rod for locking a ram to
a charging box, of a shaft having connection with 55
said rod, a ratchet wheel fixed to said shaft, a
vertically reciprocating plunger having a pawl
engaging the ratchet wheel to cause rotation
thereof upon upward movement of the plunger,and selective means for rotating the shaft to lo- v electromagnetic means producing upward move 60
ment of the plunger when energized, said plung
cate the rod in locked or released position.
er descending by'gravity when the electromag
6. In a device of the kind described, the com
bination with a >lock rod. of an operating shaft,
a crank provided by said shaft and connecting
65 with the rod, a second shaft for driving the op
erating shaft, a ratchet on said second shaft, and
selective means independent of each other for
rotating the ratchet.
‘
7. In a device of the kind described, the com
70 bination with a lock rod, of an operating shaft, a
netic means is de-energized, a stop pawl opera
tive to limit the rotation of the ratchet wheel by
upward movement of said plunger, said plunger 65
when in lowered position rendering the stop pawl
inoperative, and an auxiliary pawl engaging the
ratchet wheel for preventing reverse rotation
thereof.
FERDINAND H. H. FOSS.
70
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