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Патент USA US2131063

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Sept. 27, 19380
- a. w. MORK
2,131,063
DRAG BUCKET AND CLEVIS THEREFOR
Filed Jan. 8, 1957
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72"
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INVENTOR.
ATTORNEYS.
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'] ijwll-i '1‘
Milwaukee, Wis” alsimr
.commy, South
i Delaware ' Milwaukee,
Application room-ye,
~ 1937, 8am ‘No; 1719.559
-
‘My; invention
°'
(01. 31-485)
,
movements in drag-buckets and clevisestherei'or.
The conventional drag-bucket,
‘
ence number is applied
,
similar members.
for use on 'w'im' toFigure
1
known as a “dragline'! excavatonis ‘a boxlike
elevation of one form of my
clevls.‘ and is01'a side
the cooperating‘ portion or‘ my
‘
bucket.
_ Figure 2
‘ ‘Y on each sidefbehind ‘the center 01’ gravity, sup; ‘
ports“ the‘bucket. i A dragfch
’
attachecllto
"
_
.
_
,
drags the bucketthroughwthe
of my cle is a side elevation of a second form
, Iand 7 of the I cooperating’ portion or
my bucket.
Figure \3 isa plan view of
the device 01' Figure
~ 1,_ taken along the line
, a showing part
H of Figure 1, and
of the bucket proper in section. ‘
is a side elevation of a third form 0'!
1 myFigure
clevis,4 and
01’ the'cooperating portion of my
, -
bucket.
Referring now '
thefront "thereof." M
shoruyfabov'e its-point oiirpr'kine. the- hoist‘
chain} carries a. forwardlyprojecting sheave; : A f
l4, and having a cylindrical ver-lv
tical hole I!‘ in a part i6 which projectsbeyond .20v
~ the side-plate, it. The clevls-plate I3 is preter~
énsaslns the dras
.
,
-' ving two vertical holes I! in projections 20, which
‘ ‘ I straddle the projecting part‘ It
plate
l3.
-
,
v
-
Through vertical holes IS in the
clevis, and
ii in the clevis-plate, is
inserted
‘a, pin 2|,
I secured in place by a cotter-pin
22.
" .,
hole
a 1
_
The device in Fl
sure 2 is similar except as.
will appear from di?ferencesj in the following de
integral) a clevis-plate l3’,
preferably reinforced‘ by ribs I4’ and having a
~ cylindrical vertical hole [5' in a. part l6’ which
l_ projects beyond the side-plate ll
’.i straddle
The clevis
plate I3'_ is'preferably
bifurcated to
the
side-plate‘
II'
‘the opening it’,
p
‘
~
-- - Through vertical holes IS’ in the vclevis, and 55
‘
'
2
.
hole I!’ in the clevis-plate, is inserted a pin 2|’,
secured in place by a cotter-pin 22'.
The device inFigure 4 is similar to that in
Figure 2 except as will a
from differences in
the following description. ii" is the side-plate
6 of my bucket. Onto this is secured by bolts i!"
toadrel
2. Means for attaching a drag chain forwardly
proiectinl
bucket. comprising: a ing
from the side of
thebueket;aU-shepedclevil.‘
the feet of which have provision
attachment to the ing. and the U of which has
a projection, in cooperation with the forward
edge of the lug, for
verating- chain-link (not claimed) to a position
plate II" preferably reinforced by ribs ll", and
the other; and means for swivelly attaching the
clevis to the lug.
substantially nearer to one leg of the U than to pa
a cylindrical vertical hole‘ ll," in a part
10 having
i6" which projects beyond the side-plate ii".
15
con?ning a coop
(or by rivets, welding or other equivalent means;
or the part might even be built integral) a clevis
3. Meansforattachingadragchsintoadral
Clevis-plate i3" is preferably bifurcated to strad
bucket, comprising: a ing projecting forwardly
dle the side-plate H", as was shown in Figure 3.
i1" is a clevis, having a transverse opening I."
from the side of the bucket; a U-shaped
the feet of which have provision
for engaging the drag-chain (not shown); Open-.
ing it" communicates clear through upwardly,
attachment to the ing, and
thereby enabling this form of my clevis to be
inserted through an unbroken link of my drag
chain. Within this opening I." there is a pro
truding portion 23" for the purpose of confining
20
the chain to a de?nite part of the opening it".
One arm 24" of the clevis passes through ver
tical hole is"
in the clevis-pla , to serve as a
pivot for theclevis therein. A ring 25" is placed
over the two arms of the clevis, this ring being
25 held in place by cotter-pins 22", and thus serves
both to close the opening of my clevis and to re
strain it from slipping out of my clevis-plate.
' It will be noted that, in all three embodiments
80 of my invention, two levels of attachment of
the drag chain are selectively attainable, by
simply reversing the clevis.
there is
but one long strong place of swiveling attach
ment. Also that some part of the replaceable
35 relatively inexpensive clevis always lies below the
projecting portion it of the bucket, and thus pro
tects it from ground-engaging wear.
_
a projection, in cooperation with the forward
edge of the ing, for positively con?ning a co
operating chain-link (not claimed) to a position
substantially nearer to one leg of the U than to
the other; and means for swivelly attaching the
clevis to the'lug; the clevis being further char
acterlsed by the fact that a portion of it will
underlie the entire lug to take the ground
engaging wear.
-
4'. A clevis, comprising: two legs,
in‘ feet having aligned holes
U-shaped portion,
‘
ating chain-link
tion of su?lcient length as compared
so that, in cooperation with the attaching por
tion of the bucket (not claimed), itwillserveto f
positively con?ne the cooperating chain-link to
a position substantially nearer one leg than the
other.
_
'5. A clevis, comprising:
in 'feet having provision
drag-bucket; a U-shaped portion,
tion of a cooperating chain-link (not claimed);
sufhcient length as compared
shall describe two important features of my and a projection ofthat,
in cooperation with the
clevis-plate
II.
This
plate
is
split
clear
through
_
the bucket (not claimed),
40
to the hole l5, by the slot 26, and is provided
with abutments 11, to bear against the edge of it will serve to positively con?ne the cooperating
the side plates ii of the bucket. The slot 28 chain-link to a position substantially
enables the clevis-plate to be sprung onto the leg than the other.
6. A clevis, comprising: two
side plates,
a tight ?t without H
m of
45
in feet having provision for
chining. The
drag-bucket; a U-shaped portion, for the recep
the shear due
tion of a cooperating chain-link (not claimed):
which always occursduring each
sufficient length as compared
Having now described and illustrated three
with
the
legs
so
that,
in cooperation with the
forms of my invention, I wish it to be under
50 stood that my invention is not to be limited to attaching portion of the bucket (not claimed).
it will serve to positively con?ne the cooperating
the speci?c forms or arrangements of parts here
chain-link to a position substantially‘nearei' one
inbefore described, except insofar as such limi
leg than the other; the clevis being further char
tations are speci?ed in the appended claims.
acterized by the fact that a portion of it will
55
I claim:
'
the drag chain to a underlie the attaching portion of the bucket to
1. Means for attaching clevis plate projecting
take the ground-engasins wear.
drag bucket, comprising: a
'7. A clevis assembly, comprising: two legs, on
forwardly from the side of the bucket, and hav
ing a cylindrical substantially vertical hole, two of which is adapted-to be swivelly inserted ins
hole on a dra -bucket (not claimed); a U in the
60 ?at portions to straddle the side-plate of the
bucket, a slot extending rearwardly from the other leg, for the reception of a cooperating
hole whereby the two ?at portions are completely chain-link (not claimed); a projection, in co
separated from each other throughout, and at operation with the forward
least one projection extending inwardly from one for positively con?ning this link
substantially nearer the level of one end of the
65 of the ?at portions and bearing against the front swiveling portion than of the other end; and
edge of the side-plate; and a clevis assembly,
having a cylindrical portion insertible in said means for simultaneously closing the openlni
hole for swiveling therein, means to secure this between the' two legs-and for retaining the swivel‘
ing leg in place.
portion in place, a transverse hole for engage
and means to positively
8. A clevis assembly, comprising; two legs, on
7° ment with the drag chain,
of
which is adapted to be swivelly inserted t
con?ne the chain against vertical shifting while
a
hole
on a drag-bucket (not claimed); a U i
in this last-named hole; the last-named hole be
ing so located in the assembly that a reversal of the other leg, for the reception of a oooperltin
the assembly will move the hole to a materially chain-link (not claimed); a projection, in c1:
Reverting now for a moment to Figure 3, I
75 different level
with respect to the‘ bucket.
2,1s1,oes
3
underlie the cooperating portion of the bucket to
take the ground-engaging wear.
9. A clevis plate for a drag-bucket, comprising:
positively con?ne the chain against vertical shitt
ing while in this last-named hole; the last-named 10
hole being so located in the assembly that a.
a projecting lug, containing'a substantially vertical, hole; two ?at portions to straddle the side
reversal of the assembly will move the hole to a
materially different level with respect to the
plate (not claimed) of the bucket, said ?at por-
tions being completely separated from each other
bucket.
-
11. A clevis plate for-a drag-bucket, compris- 15
the ‘hole by a slot; and at least one projection
vertical hole; two ?at portions to straddle the
so as to bear against the front edge of the side
portions being‘ completely separated from each
other throughout so much of them‘ as lies rear- 20
plate.
‘ 10. Means for attaching the drag chain to a
wardly of the hole by a slot; and at least one
drag-bucket, comprising: a clevis plate projecting
forwardly from the side of the bucket, and having
a cylindrical substantially vertical hole, two ?at
projection extending inwardly from one of the
?at portions so as to bear against the front edge
of the side plate.
, aportions
to straddle
the side-plate
ofhole
the bucket,
slot extending
rearwardly
from the
where
GEORGE W. MORK.
25
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