вход по аккаунту


Патент USA US2106402

код для вставки
Jan- 25, 1938.
‘Filed March'lO,
2,106,402 ‘ -
s Sheets-Sheet 1
~ A gelo
Jan- 25, 1938.
5 Sheets-Sheet 2
'Filed Maréh 10, 1957
, k“.0m;_
)2710 Carl‘ simo ' '
_‘Patented Jan. 25, 1938 _
_ ' 2,106,402 -
rm sno'var. nxcnvaroa
Angelo Carieslmo, mil-0a, Mich.
' Application mesh 10, 1931, Serial No. 130,044 '
4 Claims. (cl. sigma)
The improvements in pull shovel ‘excavators
invented by me refer to the construction and de ‘ ciiically,‘ boom 3; attached by hinge 8 to its base
plate pivotally mounted ‘on the rotating base 2,
of the boom used in such shovels, to the de
‘sign and construction of the dipper by means curves upward beginning at the said hinge} from
said imaginaryline connecting the center pin 1
of which the material is excavated and trans
ferred, to means of bringing the buoket‘into a of the base hinge 6. with the pin I! located at the
quick dumpi g position and to novel means in- . other end of the'boom, describing an arc sub
corporated into the bucket of aiding in dumping stantially oi.’ 90 degrees. ‘The main portion of
10 the material excavated by the bucket.
The advantages of the construction arising out
of my innovations are obvious and many and
they will be clearly apparent from the detailed
description of my improvements, which are illus
more, at its widest
trated in the
point. The mounting of as
the .boom on the ro
tating base 2 is accomplished in the conventional .
shovel consisting of a crawler and rotating base
. assembly, supporting a boom and a dipper.
Fig.v 2 shows the side elevation of the shovel
disclosing’ the design of my boom and the con
struction of the dipper.
Fig. 3 shows a detailed side elevation of the
boom. and the dipper, the latter being shown in
the dumping- position.
vertical plane being controlled
, operated by the power plant on by cable means
the control plat
The illustration in Fig. 1 shows the boom’ op 20
form of ‘ the shovel.
erativeiy extending sideways overithe end of the -
- Fig. 4, shows the side elevation‘ of the same
position the shovel is adapted
boom and dipper in a scooping position.
Fig. 5 shows the plan view of the boom, the
. dipper stick and the dipper.
Fig. 6 is a sectional elevational view taken on
line 6-6 of Figure 3 and looking in the direction
of the arrows.
Fig. 7 is a side
modi?ed form of
Its base may be forked, as shown in Fig.
dipper. partly in section. of a‘ 1, and attached by hinges 6 to its base plate on
Fig. 8 is a view similar to Figure 6 but featur
ing the disclosure of Fig. 7.
Similar numerals refer to similar ‘parts
throughout the several views.
platform 2.
Now I wish to describe the construction and
operation of my novel dipper 4. The innovation
The view shown in Fig. 1 presents a diagram
employed by me.
Fig“. 2, does not
extend in a straight line from its _
50 hinged mounting,
as is the
conventional practice,
but is provided with two inward curves, one at
the base, the other at the end‘, so that the main
its other end to a
portion of the body of the boom rises above a member i5, which is hinged to a projection on’
straight imaginary'line connecting the base hinge
55 t oi" said boom with the end of said boom. _ Spe
the top of the boom 3. The pin 42, serving to
connectv the journalled ends of the link i 2 and
member 15, serves also as the‘ supporting axle for
while the angle between the boom and the dipper .~
stick widens, beams I! act upon the front end of
the dipper, serving to accelerate the tilt of the
the ~sheave M. A cable H, which is dead-ended
at 89 by being secured to member I‘, the latter‘
dipper into a dumping position when the mouth .
in turn being attached to the axle of the sheave
l4, loops over the sheave- and is actuated and con
trolled by means of the cable drum on the op
of said dipper is'turned downward, as shown in 5
Fig. 3.
It will .be'noted that the swing of the ‘
ejector l, actuatedby bar 25, is relatively smalls“
erating platform of the shovel. A pull exerted
from the drum upon the cable I‘Lis transferred
While the bottom of the dipper, which is actuated
by the compound actionof the dipper stick 9 and
by means of the sheave It to link II, to the up
per end of the boom stick 9 above the pin ll,
swinging said upper part in the direction .of the
the beams It, describes an arc, the ejector re- 10
tains relatively more or less the same position so
that with relation to the bottom of‘ the dipper, it
is brought to the front part thereof, as shown in
10 pull and imparting an outward swing to the lower
stick and to the dipper connected
thereto. 'A pair of beams i8, disposed- crosswise
of the dipper stick 9, is pivotally attached to the
' end of said
Fig. 3, and is mad ‘to push out any material that
forked end of the boom, at a point somewhat .
forward of the pivoted connection of the boom
may be therein.
It is possible to accelerate or~ retard the rate
of the swing of the dipper by adjusting the length/
stick 9, the manner of connection being such that of the beams l8. . This may he done by employ- .
each beam is pivotally suspended from each ing a shorter length of said beams‘ and for that
forked end of the boom 3.‘ At their lower ends, purpose additional bearings II or more maybe 20_
the beams are plvotally attached to hinges 20, provided. When the load of the dipper has been
>20 one such hinge being formed on each side plate dumped by having the dipper brought into a
of the dipper substantially as shown. Shaft II dumping position, as shown in‘ Fig. 3, the front
of the hinge 20 extends transversely across the of the dipper is again brought into a digging ,po
width of the dipper, (connecting both its sidewalls, sition by means of cable 26 when the ejector 8 25
and serves as the axle for the pivotal support of recedes towards the back of the dipper actuated .
the ejector or scraper 8, serving to remove from
A modification of the dipper is shown in Fig. 7.
the interior of the dipper any material that may
be therein, when the dipper has been brought into While the construction is substantially the same,
a dumping position as above stated. - The ejector it will be noted that the axle upon which the han-_' 30
is composed of two parts, one being the handle die of the ejector is pivoted, is carried in bearings
being abroad plate body 23, - located not on the top of the bucket, as shown
22 and the other
provided with two parallel ribs 43 at the back. in Fig. 4, but on beams 32 corresponding to beams
forming thus‘ a recess into which the lower part ‘is in Fig. 4, and that the-ejector is actuated by
of the handle is ?tted and in which itis retained
by lateral pins 2|. The pinsggl are of the va
riety known as the shearing pi
and are intend
ed to break in- case of an excessive stress upon the
arm it. Otherwise the, arrangement of parts is 3:,
It will be seen that the modification has oer-'- —
tain advantages. Since the ejectoris pivoted on '
the movable beams 32, and the angle between the
top 34 of the dipper and the beams 32 varies, the 40
middle part of the boom stick 9 at M. The blade of the ejector will be able to'reach deeper
40 ejector I has the form oi’ a shovel extending into the bucket when said angle decreases and the
transversely in the dipper, substantially across bearing 38 is brought closer to said top," of the
the bucket may be
the whole width of said dipper. In operation, it bucket. As a result thereof,
is adapted to swing within the dipper in an are built deeper. providing a lasger capacity for- 45'
from the back of the dipper to its front, the lower material.
with respect to the
end of the ejector moving closely to the bottom
is gradual. The
of said dipper l.
ejector 8. The handle of the ejector is actuated
by bar 25, pivotally connected substantially to the
The digging operation oij-the shoVeL'particu ejector, positioned first at the back of the dipper,v
larly the digging operation of the dipper, is con; is gradually and steadily changing its relative po- 50
.trolled by the cable 28 rolling over sheave 1
said-boom 3 and looping over sheave
sition with respect to the bottom of the dipper, ‘
while the latter is being swung in an- arc with
respect to the boom into a dumping position. As I
ber 29, hingediy attached‘ to the front section of soon as this swing starts, theejector begins its
pushing and ejecting action. Whenthe material 55 '
the dipper to journalled connections
of the ejector 0. when th _ _
55 position
digging and loading operation, is atthe back of
is soft, this may serve to compress such material
as is contained in said bucket before it is ejected.
the dipper, forming the back wall therein so that , Sometimes, however; should it be desired that
interferes with said loading or dig-,7 the ejecting action of the ejector be delayed, it
gins. When
positipi’i. a may be accomplished by construction shown in so
- Figi'lj wherein arm 23 is provided with a slot ll,
pull exerted
sliding onpin 4!. The arrangement or an equiv- ‘ ‘
intervening connecting me
the dipper; brings‘ the teeth-equipped lip of the alent construction will allow some play between
vthe parts, delaying the movement of the ejector
dipper into a digging and ‘loading engagem
As a result with respect to the interior of the dipper. In 55'
with the material to be worked upon.
thereof, the dipper becomes mied with said inn- other words, the arrangement will allow the ejece
terial. When it is intended that
brought into a dumping position,
the ‘dipper be
tor to remain idle at the beginning of the dump-.
but will begin itseiectins movement .
sometime after the initial swing of ‘the dipper,
stick and the‘buckt into a‘ dumping podtion 70
ll, link I! and the dipper
- ' piished by means of-cable
I‘l actingupon sheave
pull of the cable, the dipper'stick l, which up to
vIn. operating the boom, mprovisioh .is
rightangle to the boom .3, assumes a new position that the dipper stickbe relieved from the stresses
70 this time has assumed a position substantially at
substantiallyin continuation of the longitudinal of,the cable operatlngupon thebooin, and this is
axis of the boom; All durlns the change from elected by. having the sheave‘ ll attached to the 15
the-loading position into adumpinl position;
dipper stick b member Ii hinged at It to the
boom itself.
Having thus described my ‘invention embracing
the aforesaid improvements, what I wish to claim '
is new and what I wish to protect by Letters
Patent is:
1. In a steam shovel employing a boom as a
part thereof, in combination a tiltable dipper, a
dipper stick provided with a plurality of selective
bearings pivotally mounted in said boom, ap
proximately at the end thereof, one end of said
stick being pivotally attached to the back end
described, in combination a boom, the main body
portion of said boom being raised above the line
connecting the base hinge and the point of said
boom, a dipper stick adapted to' swing in an arc ' '
from the end of said boom, a dipper adapted for
digging and loading purposes hingedly suspended
on said dipper stick, beam means pivoted on said
boom, cooperating with said dipper stick- to’ im
part to the dippera tilting motion from a load
ing into a dumping position, cable means actu 10
ating said dipper stick, an ejector pivotally
_ of the dipper, the other. end above its pivotal‘ mounted comprising transversely disposed means
mbunting on'the boom being connected to means within the interior of said dipper and extending
15 responsive to the pull of a cable, beam means substantially the whole width thereof, bar means
pivotally mounted on said boom‘ forward of the to actuate said ejector, said means being slotted
pivotal connection of the stick, the body of said at one end and slidingly ?tting over a'pin on the '
beam means crossing the stick and being pivotally dipper stick, said bar means co-acting with said
attached at the other end of the upper middle - dipper stick to change the position of the ejector
2.0 section of the dipper, and- cable means to actu
ate the said dipper and said dipper stick.
2. In a power operated pullshovel of the class
described, in combination a boom, the main body
portion of said boom being raised above the line
connecting the base hinge and the point of said
.boom, a dipper stick adapted to swing in an are
‘from the‘end of said boom, a dipper adapted for
in an arc from the back of the dipperxwhen same
is in a loading position to the front of the dipper 20'
when same is in a dumping position, and cable
means to move the dipper from the loading into '
a dumping position.
4. In a power operated pullshovel employing a
boom as an operative part'thereof, in combination
a dipper stick adapted to swing in an are from the .
end of said boom, a dipper adapted for digging
on said dipper stick, beam means pivoted on said and loading purposes, beam means pivoted on
,30 boom cooperating with said dipper stick to im- . said boom, cooperating with said dipper stick to
impart to the ‘dipper a tilting motion from a 30
part to the dipper a tilting motion from a load
loading intoa dumping position, an ejector com
ing into a dumping position, cable means actu
ating said dipper stick, an ejector within the prising a movable plate body transversely dis
posed in said dipper and a handle to which said
pivotallyirliiiounted handle plate
body is attached by'means yielding under
35 dipper
and a' platea body‘portio'
secured to the ‘
stress, means pivotally‘ and slottedly»
handle by safety pins adapted to break under 'ex
cess stress, means connected to said handle and mounted on the dipper stick and adapted to im
co-acting with said dipper stick to change the part to the ejector a retarded initial action in
position of the ejector in an are from the back ,its movement from the back of the dipper when
same is in a loading position to the front of the
40 of the dipper when same is in a loading position
to the front of the dipper when same isin a dipper when same is in a dumping position, and 40
cable means to move the dippervfrom the loading
dumping position, and cable means to move the into
the dumping position.
. dipper from the loading into a dumpingposition.
digging and loading purposes hingedly suspended
3. In a power operated puilshovel oi the class -
Без категории
Размер файла
550 Кб
Пожаловаться на содержимое документа