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Патент USA US2126124

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2,126ÄZ4
F. S. MCCUTCHEON
EXCAVATING BUCKET
Filed OOÍ.. 26, 1935
KY
IN VENTOR.
DE UTBUN
"
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ATTORNEY. ‘
Patented Aug. 9, 1938
, UNITED
2,126,124
s'rrss
¿PATENT OFFIQE
2,126,124
EXCAVATING BUCKET
Frank S. McCutcheon, Des Moines, Iowa
Application October 26, 1936, Serial No. 107,611
5 Claims.
The principal object of this invention is to
provide an excavating bucket that may be used
for circular shafts and wells, and that may be
completely operated and controlled with` only one
5
cable.
'
A further object of my invention is to pro
vide an excavating bucket to be used in confined
quarters where the space of operation' is limited.
l
Still further objects of this invention are to
10" provide an excavating bucket that is positive in
its action, that conforms to the shape of the
excavation, that allows water to run from the
excavated material in the bucket and that has
, few moving parts.
"
A still further object of my invention is to
provide an excavating bucket that is economical
in manufacture, durable and efficient in use.
'I‘hese and other objects will be apparent to
those skilled in the art.
20" My invention consists in the construction, ar
rangement >and combination of the-various parts
of `the device, whereby the objects contemplated
are attained as hereinafter more fully set forth,
l pointed out i-n my claims and illustrated in the
25" accompanying drawing; in which:
Fig. 1 is a side plan view of my complete ex
cavating bucket with portions cut away to more
fully illustrate its construction.
Fig. 2 is a side plan view of my excavating
`30""bucket and more fully illustrates its construc
tion.
Fig. 3 is an enlarged cross-sectional view of a
portion of one of the jaw elements showing Vthe
p xmethod by which it is hinged to the frame.
35"; Fig. 4 is an enlarged cross-sectional View of
the cutting edge of the jaw members of my de
vice.
‘
It has long been a problem, Vin the drilling of
` A_wells or similar excavations, to progressively re
40lmove the `excess dirt and extraneous material
from the bottom of the shaft. Heretofore this
has been accomplished through hand labor. Usu
ally a man is placed in the bottom of the well
Where he digs a considerable amount of dirt
45"loose and then a make-shift container is low
ered and filled with the dirt, after which the
container is brought to the surface and-emptied.
Thus considerable time and effort are wasted in
removing material from a deep shaft by this
50‘slow‘ and primitive method. It is very difficult
to _work in a confined shaft for any length of
time and to eiiiciently use tools available in this
cramped position making the work slow and the
4dangers from cave-ins are ever-present. No suc
55`<ces`sful mechanical device has heretofore been
(Cl. 37-187)
available that will both loosen the dirt from the
bottom of the shaft and bring it to the surface
as devices heretofore attempted, required con
siderable mechanical manipulation for their op
eration. Also they could not be made so that 6
they would seal the dirt Within the container pre
venting the spilling of the dirt while it is be
ing removed from the shaft. I have overcome
these disadvantages as will `be appreciated and as
more fully hereinafter set forth.
l0
Referring to the drawing, I have used the nu
meral Ill to designate an inverted U-shaped frame
member having its lower end open. The numeral
II designates a second inverted U-shaped frame
member spaced apart from and parallel to the 15
ñrst mentioned frame member Iii.
p
The numeral I2 designates a spreader bar se
cured across each of the U-shap'ed members
Il! and II at a distance above the open ends
of the frame members as shown in Fig. 1 of the 2O
drawing. The numeral I3 designates a brace ele
ment between the bars I2 and the two inverted
U-shaped frame members having a bearing Ill
near its central portion. ' The numeral I5 des
ignates a similar brace element between the up- 25
per closed ends of each of the frame elements
Ill and II and which has near its central por
tion a bearing element I6. These brace elements
I3 and I5 `with their attendant bearings are illus
trated in Fig. 2 of the drawing. The numerals 30
Il and I8 indicate two pull bars rigidly secured
by Welding or the like to the upper central por
tion of the frame members ||l and || sloping
upwardly and inwardly and having a transversal
bar member I9 secured to its upper end portion. 35
I have used the numerals 2l) and 2| to desig
nate the jaw members or elements of my de
vice. These jaw members 20 and 2| have a cir
cular bottom, a straight back and are sharp
ened along their forward edges so as to inter- 40
lock when closed. More specifically, the front
sharpened portion of the jaw member 20 slopes
upwardly and outwardly and the front portion of
the jaw memberl 2| slopes downwardly and out
wardly so that they overlap. Secured to the 45
lower rearward side of each of the bucket or jaw
members 2|! and 2| are the sleeve elements 22.
These sleeve elements are in turn rotatably
mounted on an axle rod 23 which in turn has
each of its ends secured to the lower open por- 50
tions of each of the frame members I El and II
as shown in the drawing. It will here be noted
that inasmuch as the forward edges of the jaw
members 2i) and 2| are bevelled and overlap
ping, that the point of greatest overlap is reached Ul u
2
2,126,124.
as the jaws 20 and 2| pivot about the shaft 23.
The bevelled faces will ride on each other, forc
ing the upper corners of the buckets 20 and 2|
to overlap, thus allowing enough clearance for
the pivoting of the buckets relative to each other.
The numerals 24 designate a plurality of tooth
elements secured to and extending beyond the
lower forward edge of the jaw member 2|). Simi
larly, the numerals 25 designate tooth elements
secured to and extending beyond the lower for
ward edge of the jaw member 2| and so posi
tion, retaining the material therein trapped so
that it may be lifted from the cavity. The ex
cess water forced to the top of the material in
the case of a well, will run off through the re
stricted U-shaped openings 26 in the upper ends
of the jaw members 20 and 2|; thus it will be
seen that I have provided an excavating bucket
that may be used in restricted and conñned
places, and is completely operated by the cable
used in raising and lowering the device, that 10
will excavate in placesr where other methods can
tioned that when the jaw members 2S and 2| not be employed and that may be operated by
are in a closed position adjacent each other the anyone with no difficulty. Furthermore, the
teeth 24 will be positioned respectively between device is positive in its operation, does not allow
. the dirt that has been collected within the jaw
the teeth 25.
The numerals 2G designate cut out portions members to escape while the device is being
on each of the upper rear corners of the jaw pulled to the surface and which allows excess
members 20 and 2| to allow a trough through accumulated water to run off of the upper sur
which water may run from the material within face of the material contained within the bucket.
20 the jaw members when they are filled with a
Some changes may be made in the construction 20
material. I-Iingedly secured to the inside bottom and arrangement of my improved excavating
portion of the bucket or jaw members 2i! and bucket without departing from the real spirit and
secured to the forked bearing 29 and slidably
purpose of my invention, and it is my intention
to cover by my claims any modiñed forms of
structure or use of mechanical equivalents which 25
may be reasonably included within their scope.
I claim:
1. In a device of the class described, a frame
mounted in the bearing members I4 and I6 as
member, jaw members hingedly secured to said
2| are the spreader elements 2'! and 2B respec
tively which extend upwardly and inwardly, and
r ’have their upper ends commonly pivotally secured
to a forked bearing 29. The numeral 30 desig
nates an elongated shaft having its lower end
30 shown in the drawing.
Rigidly secured to the
upper end of this shaft 30 is a forked bearing
3| in which is rotatably mounted a pulley wheel
32. Rotatably secured to one end of the trans
versal bar member I9 is a small guide pulley
33. The numeral 34 indicates a common spring
catch on the other end of the transverse bar
member | 9 and as is most generally known, these
spring catches are capable of retaining the cable
or like when a considerable force is exerted
40 against them but as soon as the pressure is re
leased, releases the cable or like.
I have used the numeral 35 to designate an
operating cable which extends downwardly from
a derrick or like, is guided by the inner edge of
the small pulley wheel 33, extends down and
around the lower edge of the pulley wheel 32,
and thence upwardly Where it is secured to one
end of the transverse bar member I9 as shown
in Fig. 1.
.
The practical operation of my device is as fol
lows: When it is desired to lower the bucket,
considerable slack is allowed in the cable that
lowers it so that the cable is in approximately
the position shown by dotted lines in Fig. 1. The
cable is then secured to the spring catch 34 and
as the cable has the slack in it the shaft 3|) will
drop downwardly due to its weight thus push
ing on the spreader elements 2`| and 28 forcing
the jaw members 26 and 2| downwardly and
outwardly to a position as shown by dotted lines
in Fig. 1 of the drawing. Thus the cutting edges
of the jaw members 2|! and 2| will be pointed
downwardly in substantially a circular arc in
which position the entire excavating bucket may
be dropped into the shaft and will bite deeply
into the soil. As soon as these elements hit the
bottom of the shaft and the weight or strain is
taken from the cable, the spring catch 34 will re
lease the cable and when the cable is wound on
a drum or like to pull the mechanism back out
of the cavity or well, the first operation of the
cable will rotate the pulley wheel 32, thus pull
ing upwardly on'the shaft 30 which in turn will
pull upwardly on the two spreader members 21
and 28, thereby pulling the jaws to a closed posi
frame
frame
cured
shaft,
member, a shaft slidably mounted in said 30
member, actuating elements operatively se
to each of said jaw members and to said
a pulley wheel on the upper end of said
shaft, a spring release member on the upper end
of said frame, a cable having one end secured to 35
said frame operatively engaging said pulley wheel
and retained by said spring catch at times; said
jaw members being in an open position when said
cable is engaged by said spring release, and cut
out portions in each of said jaw members near
their upper marginal edges.
2. In a device of the class described, a frame
member, jaw members hingedly secured to the
lower ends of said frame member, pull bars ex
tending upwardly from s_aid frame member, a 45
tranverse bar member secured to the upper end
of and at right angles to said pull bars, a shaft
slidably mounted in said frame member, actuating
elements operatively secured to each of said jaw
members and to said shaft, a pulley wheel on 50
the upper end of said shaft, a guide pulley rotat
ably mounted on one end of said transverse mem
ber, an operating cable extending adjacent said
guide pulley around the lower travel of said pul
ley wheel and having its end secured to the other
end of said transverse member, and a catch spring
release element secured to one end of said trans
verse member capable of engaging said cable and
holding said jaw members in an open position at
times.
3. In a device of the class described, two in
60
verted U-shaped frame members, two jaw mem
bers hingedly secured to the lower open ends of
said frame members, pull bars secured to the cen
tral portion of said frame member extending up 65
wardly, transverse members on the upper end
of said pull bars, a guide pulley rotatably mount
ed on one end of said transverse members, a ver
tical shaft slidably mounted in said frame mem
ber, a means for linking the lower end of said
shaft to each of said jaw‘elements, a pulley wheel
rotatably secured to the upper end of said shaft,
a cable extending adjacent the inside of said
guide pulley operatively embracing said pulley
wheel and having its end permanently secured to 7 5,
2,126,124c
the other end of said transverse member, over
lapping bevelled forward. edges on said jaw mem
bers, and a spring catch release element secured
to said transverse member capable of engaging
and holding said cable so that said jaw mem
bers are in an open position when said cable is
engaged by said spring release.
4. In a device of the class described, two in
verted U-shaped frame members, two jaw mem
10 bers hingedly secured to the lower open` ends of
said frame members, pull bars secured to the cen
tral portion of said frame member extending up
wardly, transverse members on the upper end of
said pull bars, a guide pulley rotatably mount
15 ed on one end of said transverse members, a
3
cut-out portions in the rearward corners of said
jaw members, a plurality of tooth members se
cured to each of said jaw members extending be
yond the forward edges of said jaw members, and
a catch spring release on one end of said trans 5
verse member designed to engage and hold said
cable for holding said jaws in an open position
when said cable is engaged by said spring re
lease.
5. In a device of the class described, a frame 10
member, jaw members hingedly secured to said
frame member, a shaft slidably mounted in said
frame member, actuating elements operatively
secured to each of said jaw members and to said
Vertical shaft slidably mounted in said frame
shaft, a pulley wheel on the upper e-nd of said 15
shaft, a spring release member on the upper
member, a means for linking the lower end of said
shaft to each of said jaw elements, a pulley wheel
end or" said frame member, and a cable having
rotatably secured to the upper end of said shaft,
A20 a cable extending adjacent the inside of said
guide pulley operatively embracing said pulley
wheel and having its end permanently secured to
the other end of said transverse member, overlap
ping bevelled forward edges on said jaw member,
one end secured to said frame and operatively
engaging _said pulley wheel; said jaw members
being allowed to rest in an open position when 20
said cable is engaged by said spring release and
said spring release releasing said cable when ten
sion i's relieved from said cable.
FRANK S. MCCUTCHEON.
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