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Патент USA US2111638

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March 22, 1938.
J, s. NEvlTT
PRESS BOX LOCKING MECHANISM
2,111,638
March 22, 1938.
'_J, 5 NEV|TT
2,111,638
PRESS BOX LOCKING MECHANISM
Filed Maron 2'1, 1955
5 Sheets-Sheet 2
\ March 22, 1938.
_1_ s NEWT-f
PRESS BOX LOCKING MECHANISM
Filed March 2l, 1935
2,111,638
3 Sheets-Sheet Z
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Patented Mar. 22, 193%
ATENT
UNITED STATES
FFICE
2,111,638
PRESS BOX LGCKING MECHANISM
James S. -Nevitt, Dallas, Tex., assigner to The
Murray Company, Dallas, Tex., a corporation of
Texas
Application March 21, 1935, Serial No. 12,227
5 Claims.
<01. 10c-2s)
This invention relates to new and useful im
provements in press box locking mechanism.
One object of the invention is to provide an
improved locking mechanism for a press box
5 which is connected with and actuated by the
tramper operating means, said mechanism being
arranged to be applied to any type of press box
of the usual construction to lock the same in
position.
l0
'
An important object of the invention is to pro
vide an improved locking mechanism for the
ordinary double press boxes which are rotatable
beneath the tramper and above the press, said
mechanism being so arranged that the tramper
vl5 and press cannot be operated until both boxes
have moved to their respective positions directly
beneath the tramper and above the press, there
by eliminating the danger of said tramper and
press striking the sides of said boxes and damag
20 ing the tramper or boxes due to the fact that
said boxes are out of alinement; said mechanism
also preventing the boxes from being moved out
of position during the operation of said tramper
and press.
25
Another object of the invention is to provide
an improved lock for a press box including a
latch member arranged to engage the box to
lock it in position, and means controlled by the
tramper operating means for engaging the lock
30 member, whereby when said member is holding
the Vbox in position, said means will prevent it
unlocking until the tramper Voperating means
has been cut off to disengage said means from
the member; similarly the member engaging the
35 frcontrolling means and preventing actuating of
said controlling means and the tramper operat
ing means, when the member is in an unlocked
position and the box is free to move.
A further object of the invention is to provide
110 an improved lock for a press box which is con
nected with the control of the tramper operat
ing means in such a way that the operation of
the tramper depends on the position of said lock
and the operation of said lock depends on the
45
tramper operating control.
A construction designed to carry out the in
vention will be hereinafter described, together
with other features of the invention.
50
The invention will be more readily understood
from a reading of the following specification and
by reference to the accompanying drawings, in
which an example of the invention is shown, and
wherein:
55
Figure 1 is a front elevation of a double press
box, having the improved locking mechanism ap
plied thereto,
Figure 2 is a front elevation of the lock,
Figure 3 is a side elevation of the 'same in its
locked position, engaging the flange of the press Y`f5
boxes, said flange being in section,
Figure 4 is a plan view of the lock,
Figure 5 is a transverse vertical sectional View
thereof,
,
Y
Figure 6 is a side elevation of the'upper por-V 10
tion of the press box, showing the tramper con
trol means and its connection with the lock,
Figure 7 is an isometric view of the swinging
latch bar and the stop bar,
Figure 8 is a schematic view of the tramperï'lö
brake mechanism,
Y Figure 9 is an isometric view of the connection
between the tramper operating shaft and the
locking means shaft,
,
Figure 10 is a front elevation of another form 20
of the invention,
Figure 11 is a side elevation of the same,
Figure 12 is a plan view,
Figure 13 is a side elevation of the» upper end
of a press box showing the connection between 25
the lock and tramper control means, and
Figure 14 is a detail of the gear rack employed
in this form.
1n the drawings, the numeral I0 designates a
double box press of the usual construction. Each V30
press box H is suitably secured on a rotatable
platform I2 which is mounted to rotate within
the supporting frame I3. The platform is locat
ed in horizontal alinement with the press floor
i4.
Each press box includes the usual side and ' 35
end boards I5 which are held together by the
horizontal frame members I5. These members
are usually located slightly above the level of the
platform l2.
By observing Figure 1, it will be seen that the `4.0
boxes Il arearranged so that when `one of said
boxes is in position for charging,
the tramper I1, the other box is in
alinement with the press ram
With this arrangement,
shown) .
that is, below
direct vertical
plunger (not
the cotton in '45
one box may be tamped, while the cotton in the
other box, which has already been tamped is
being baled.
All of the above described parts
are present in the ordinary double box press and
are subject to variation.
50
It has been found in practice, that when the
platform is rotated to change the positions of the
boxes, the tramper and ram plunger are operated
before the boxes have moved to their positions in
direct Vertical alinement therewith. This causes '55
2
2,111,638
the tramper and plunger to strike the edges of
said boxes, rather than entering said boxes which
results in damage not only to the boxes but also
to the tramper.
Similarly, it has been found that
if the boxes are not positively locked when first
positioned, they might move slightly out of aline
ment during the operation of the moving parts.
This also causes damage to the boxes and tramper
as well as delay in repairing the damaged parts.
To overcome these disadvantages, the locking
means is directly connected with and controlled
by the tramper control means. As shown in
Figures 1, 6 and 8, the conventional type of con
trol means for starting and stopping the tramper
I1 and press plunger (not shown) is illustrated.
This control means includes a pulley I8 which is
mounted on a horizontal shaft I9 supported in
suitable brackets 25 and 30 secured to the sta
tionary frame I3î The shaft has an arm 2l (Fig
20 ures l, 6 and 8) secured thereto and this arm is
connected by a link 22 to a second arm 23 secured
on one end of a stub shaft 24. The shaft 24 is
supported in a suitable sleeve 25 and a cam 25 is
secured on its opposite end. This cam is arranged
25 to engage the outer end of a pivoted brake shoe 21
which is positioned to engage the periphery of a
drive wheel 28 for operating the tramper I1.
The
pulley I8 is connected by any suitable means (not
shown) with the operating motor of the tramper
30 I1 so that when the pulley is rotated in one di
rection it will stop the operation of said tramper
and apply the brake, and when rotated in an
opposite direction it will release the brake and
start the tramper. A suitable cord 2S’ having
35 handles 29 at each end is passed over the pulley
whereby said pulley may be manually rotated.
In carrying out the invention, the shaft I9 of
the pulley is extended outwardly to one end of
the frame I3. (Figure 1.) The extreme outer
40 end of the shaft carries an arm 3! which is con
nected by a pitman rod 32 with the outer end of
a horizontally extending arm 33, whereby when
the shaft IS is rotated the arm 33 is swung in a
horizontal plane.
The aim 33 is secured to the
45 upper end of a vertically extending rotatable
shaft 34 which is located contiguous to the inner
side of one of the vertical standards of the frame
I3, being supported in suitable bearings 35.
The
lower end of the shaft is provided with a later
50 ally extending locking bar 36 which is secured to
the shaft in any suitable manner.
It is obvious
that when the pulley shaft I9 is rotated to start
or stop the tramper, the vertical shaft 34 is rotated
to swing the locking bar 36. The swinging of the
55 bar causes said bar to engage or disengage the
latching means as will be hereinafter explained.
For holding the press boxes against rotation
after they have been alined with the tramper and
ram plunger, as has been explained, each press
60 box is provided with a bar 40, which is secured to
the outer end of each box. Each bar is secured to
the frame member IS of the box and is provided
with a notch 4I at the central portion of the out
wardly extending ñange 40’ of the bar (Figure 4).
65 When the boxes are in their proper positions in
alinement with the tramper and ram plunger, the
notch 4I in the flange 45’ on the press box above
said plunger, is in alinement with the vertical
standard of frame I3 and is arranged to be en
70 gaged by the latching means 42.
The latching means 42 includes a pair of angu
lar supports 43 which are secured to the inner side
of the vertical standard of frame I3. The sup
ports are spaced apart and are mounted centrally
75 of the standard. An angular latch bar 44 is
pivoted on a pin 45 between the supports (Figures
4 and 5) and a coiled spring 46 is positioned be
tween the vertical leg 41 of said bar and the
standard, to exert its pressure to force the leg 41
outwardly at all times. The lower end of the Cl
vertical leg 41 is arranged to engage the notch 4l
of each bar 43 when said notch moves opposite the
same.
The notch is so positioned that when said
leg 4l' is engaged therein, the boxes are in position
beneath the tramper I1 and plunger (not shown). 10
The horizontal leg 48 of the latch is provided
with ears 49 at its outer end and a vertical rod 50
is pivoted therein.
The upper end of the rod is
pivoted to a hand lever 5I, which is mounted to
swing on the inner side of the vertical standard
of frame I3. It is obvious that by swinging the
hand lever, the latching bar may be swung to re
tract the lower end of the vertical ieg 41 from the
slot 4I of the flange 43', to the dotted line posi
tion shown in Figure 5. From the above, it is 20
obvious that as the boxes are rotated from one
position to another, the latching bar 44 will en
gage the slot 4I of the flange moving into aline
ment therewith. The ends of the angle bars 40
are rounded at 40” (Figure 4) so that as said bar
ñrst engages the leg 41 of the bar 44 said leg is
depressed under tension of the spring 46. As soon
as the notch 4I moves opposite the leg 41, said leg
moves into the notch to stop further rotation. As
has been pointed out, the boxes are in their proper ‘
positions when this occurs.
To prevent retraction of the leg 41 from the
notch 4I by the hand lever 5I, the locking bar 36
on the lower end of the shaft 34 has its outer end
extended over the upper surface of a lug 52 pro- ‘
jecting upwardly from the horizontal leg 48 of the
latching bar 44. When the bar 44 is engaging in
the notch as shown in Figures 4 and 5, the lock
ing bar 36 can swing over said lug to prevent up
ward swinging of the leg 48. This swinging occurs 40
when the pulley I8 has been rotated to turn the
tramper on. If the latch 44 has not yet engaged
the notch 4i, then it is in a retracted position,
being held so by engagement with a ñange 40’ of
bar 4l), and the lug 52 would be raised (dotted -
lines Figure 5) directly in the path of the bar 36.
In such case, the bar 36 could not be swung be
cause of striking said lug. The halting of the bar
36 would prevent rotation of the pulley shaft I9
because of the direct connection between the
locking bar and said shaft.
Therefore, unless the
latch 44 were engaging in the notch 4I the
tramper could not be turned on.
However, when the flange 40 moves away from
the latching means 42, the latching bar 44 would '
immediately swing under compression of the
spring 46 so that its vertical leg 41 will be moved
outward to a greater extent than when it is moved
to engage in a notch 4I of one or the other of
bars 45. This would move the lug 52 out of the 60
path of the locking bar 35 and permit said bar
to be swung while the boxes II were being ro
tated, thereby permitting the tramper to be oper
ated during rotation of the boxes. To avoid this,
an angular stop member 53 is pivoted adjacent
the latch 44 on the pin 45. This member includes
a horizontal leg 54 and a downwardly extending
leg 55 including the angular stop member 53.
A coiled spring 56 is mounted between the upper
end of the leg 54 and a bracket arm 51 extending 70
upwardly from one of the supports 43, and ex
erts compression to force the leg 54 downwardly
into the path of the swingable locking bar 36.
The vertical leg 55 is provided with a laterally
extending arm 58 arranged to be engaged by the
3
2,111,638
edge of the flange 40’. By observing Figure 5, it
will be seen that when the arm 58 is engaged
by the flan-ge, the stop is swung so that the leg
54 is out of the path of the locking bar 36. The
arm is-of suflicient length to bridge the width of
outer end of the shaft has the central portion of
a lever 64 secured thereto, and it is obvious that
when the lever is swung the shaft is rotated to
move the bar 60. For swinging the lever, chains
the notch 4I as it passes thereby. However, this
bar 36 cannot be swung until the latch 44 has
fallen into the notch 4I. Once the locking bar
has been swung inwardly and the tramper start
ed as shown in dotted lines in Figure 4, it is below
the leg 54 of the stop member, and above the
lug 52 on the latch 44, and the latch cannot be
retracted from the notch 4I until the bar 36 has
’been swung away therefrom and the tramper
15
stopped.
Assuming that the tramper is turned olf, the
pulley I8 is inthe position shown in Figure 6,
with the locking bar 36 in the position shown in
full lines in Figure 4, When the bar is in this
20 position, the hand lever 5I may be swung to
retract the latch 44 from the notch 4I, whereby
the press-boxes I I may be rotated to interchange
the same.
As soon as the flange 40 moves away
from the latching means 42, then the stop bar
25 53 is swung compressed by spring 56, so that its
horizontal leg 54 is swung into the path of the
locking bar 36, thereby preventing swinging of
the bar and operation of the tramper control
means. At this time the latch 44 is also swung so
30 its vertical leg is extending beyond the supports
43 in the path of the flanges 40’.
The parts remain in this position until the
press boxes have been rotated to opposite posi
tions. Then the flange 46’ on the press box mov
ing into position over the ram plunger, engages
the arm 58 of the stop bar 53 to swing said bar
so that its horizontal leg 54 moves out of-the path
of the lock bar 36. However,A at the same time,
the latch 44 is swung inwardly so that the lug
52 on its horizontal leg 48 moves into the path
of said locking bar 36. Thus, it is obvious that
when the flange 4U’ swings the stop bar 53 out of
the way of the locking bar 36, it also swings the
latch so that the lug 52 moves into the path of
said locking bar. When the latch engages in the
notch 4I, its swinging to this engaged position
moves the lug 52 out of the path of the locking
bar 36 and it is then possible to swing the bar 36
inwardly between the bar 53 and latch 44 as
50 shown in Figures 3 and 5. The bar 36 is swung
through the medium of the pulley I8 which also
turns on the tramper I1 and ram plunger (not
shown). From the above, it will be seen that
the tramper cannot be operated until the boxes
55 I I are in latched position.
After the bar 36 has been swung inwardly,
(dotted lines, Figure 4), the latch 44 can not
be swung by swinging the hand lever` 5I, because
said bar overhangs and engages the upper edge
60 of the lug 52 thereon. Therefore, the latch can
not be retracted from the notch 4I to permit
movement of the press boxes II, until the pulley
I8 has been rotated to stop the tramper and
plunger which action swings the bar from over
65 the latch to its original position shown in full
lines Figure 4.
-
In Figures 10 to 14, I have shown a modiñed
form of the invention. Instead ofthe swinging
locking bar 36 and vertical shaft 34, a sliding bar
66 is provided. This bar is positioned to move
between the stop bar 53 and the latch 44, simi
lar to the bar 36. For imparting movement to
said bar, a gear rack 6I is formed thereon and
this rack is in constant engagement with a pin
ion 62,- mounted on a suitable shaft 63. The
65 are secured to each end thereof.
The chains .v
pass over idler pulleys 66 and have their other
ends fastened to diametrically opposite sides of a
collar 61 secured on the outer end of the pulley
shaft I5 in place of the arm 3l. It will be seen
by observing Figure 13 that when the shaft I9 10
is rotated, the lever 64 is swung to rotate the
shaft 63 and pinion 62, thereby moving the bar
60 inwardly or outwardly. The operation of the
other parts is the same as that shown in Figures
l to 9 and a description is deemed unnecessary.
What I claim and desire to secure by Letters
Patent is:
vl. A locking mechanism for a press box hav
ing a notch on one end thereof, including a
swinging latch for engaging the notch to hold
the box in an immovable position, a manual
operator for swinging the latch to its disengaged
position, and controlling means connected with
the operating means of a tramper and arranged
to engage over said latch when it is engaged in 25
the notch, whereby swinging of the latch is pre
vented when the tramper is operated, said con
trolling means being disengaged from the latch
when the tramper is inoperative, whereby the
latch may be swung to disengage it from the 30
notch, the swinging of the latch moving said
latch from the notch to a position in the path
of said controlling means to prevent actuation
of said controlling means and tramper.
2. A locking mechanism for a press box hav
ing a bar provided with a notch on one end
thereof, including a swinging latch for engag
ing the notch to- hold the box in an immovable
position, a manual operator for swinging the
latch to its disengaged position, controlling 40
means connected with the operating means of
a tramp-er and having an element arranged to
engage over said latch when the latter is engaged
in the notch, whereby swinging of the latch is
prevented when the tramper is operated, said 45
controlling means being disengaged from the
latch when the tramper is inoperative, whereby
the latch may be manually swung to disengage it
from the notch, and spring-pressed means ar
ranged to move into the path of the latch en
50
gaging element of thev controlling means to pre
vent actuation thereof when the latch is dis
engaged from the notch bar, thereby preventing
operation of the tramper when the press-’box is
55
moved from its latch engaging position.
3. A locking mechanism for a press box having
a. bar provided with a notch on one end thereof,
including a swinging latch for engaging the
notch to hold the box in an immovable position,
a manual operator for swinging the latch to its 60
disengaged position, controlling means con
nected with the operating means of a tramp
er and having an element arranged to en
gage over .said latch when the latter is en
gaged in the notch, whereby swinging of the 65
latch is prevented when the tramper is operated,
said controlling means being disengaged from
the latch when the tramper is inoperative,
whereby the latch may be'manually swung to
disengage it from the notch, and a swinging
stop bar arranged to move into the path of the
latch engaging element of the controlling means
to prevent actuation thereof when the latch is
disengaged from the notch bar, thereby pre
venting operation of the tramper when the press
75
4
2,111,638
box is moved from its latch engaging position,
said stop bar being engaged by a member on
the press box to swing said stop bar out of the
path of said controlling means prior to the en
gagement of the latch in said notch.
4. In a press of the class described, a press
box locking mechanism comprising, with a box
mounted for movement into and from position
for pressing operation therein, a latch-engaging
element located on and movable with the box, a
stationary latch mechanism having a normally
yieldably urged latch element automatically en,
5. In a press of the class described, a press box
locking mechanism comprising, with a boxk
mounted for movement into and from position
for a pressing operation therein, a latch-engag
ing element located on the box and movable 5
therewith to a deñnite latching position with. the,
box in proper position for the pressing operation,
a stationary latch mechanism having a normally
yieldably urged latch element automatically en
gaging said latch-engaging element to hold the llOa
box When the same is brought into proper position for the pressing operation therein, manual
gaging said latch-engaging element to hold the ly operable means for releasing said latch ele
box when the same is brought in proper position ment from said latch-engaging element, and
15 for the pressing operation therein, means for
controlling means associated opera‘bly with the
operating the press when the box is so posi»
pressing means of the press whereby to auto
tioned, and an interlocking element associated matically lock said latch element in engage
with the press operating means and cooperating -ment with the latch-engaging element on the
with the stationary latch mechanism so as to box during the pressing operation within the
20 prevent release of said normally yíeldably urged box and for preventing operation of the pressing
latch element from the latch-engaging element means when said latch element is moved from
on the box and also preventing the operation of said box-holding position.
the press when said latch element of the mech
anism is moved from said box-holding position.
JAMES S. NEVI'I‘I‘.
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