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Патент USA US2407411

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Sept. 10, 1946.‘
_
‘_ 2,405,410
‘J. H. FITZ‘GERALD
URE
' I
I
LEVER-TRACK CON‘TRDLLED BOOM BUCKET C1105
Filed April 21, 1945
3 Sheets-Shea 1 ,
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7
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WW
J. HFiizgerala'
*1 737N175 79%
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Sept. 10, 1946.
J. HQFlTZGERALD
2,407,410
I
LEVER-TRACK CONTROLLED 1306M BUCKET CLOSURE
ii‘ilied'April 21, 1945
s Sheets-Sheet 2
.3 ‘
Sept, '10, 1946. _
2,407
J. H. Fj'rzGERALD
LEVER-TRACK CONTROLLED BOOM BUCKET CLOSURE v
, Filed’ April 21,‘ 1945 _
s'Vsneets-sneet 5 f
2,407,410
Patented Sept. 10, 1946'
UNITED STATES PATENT OFFICE
‘2,407,410
LEVER-TRACK CONTROLLED BOOM
BUCKET CLOSURE
.
James H. Fitzgerald, West?eld, N. J.
Application April 21, 1945, ‘Serial No. 589,651
14 Claims. (01. 214959‘)
1
form of the boom and rigid track lever element
This invention relates to a conveyor bucket
of the type usually mounted for travel on a boom,
carried thereby;
and to the control of the closurefor such bucket.
An important aim is to provide an exceedingly
simple, efficient and durable means of mechanism
r
9-79 of Fig. 8.
_
.
Referring speci?cally to the drawings, H] des
ignates a support or boom which is to be taken
preferably employing rigid interconnected parts,
as generic of the type on which a bucket H is
whereby the bucket may be emptied at'any posi
mounted for longitudinal travel in opposite di
tion of its travel, whether stationary or in mo
tion.
and
Fig. ,9 is a vertical section taken on the line
rections, and which bucket is adapted to convey
concrete or any other desired material, the boom,
for instance, being pivoted or mounted to swing
,
Another prime object is to provide a structure
wherein the closure of the bucket is under the
control of a rigid element functioning bothas a
track for ‘the closure-actuating means of the
bucket and also as a lever for such means to ef
at the right-hand end thereof as on a horizontal
axis or of the type wherein the boom moves in
parallelism to the ground.
feet the opening and shutting movement of the
; One speci?c example is that of a paving ma
chine or other construction of machine wherein
closure
element It is a “swing boom.” This boom spe
of, the bucket.
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c
1 g
.
'
Another object is to provide, the rigid member
ci?cally constitutes'no part of my invention, nor
does the particular mounting .of the bucket H
thereon, yet to make the closure clear, it will
.20 be noted that the boom consists of two channel
beams l2 vertically disposed with their flanges
A further object is to provide a structure
extending outwardly and with the lower ?anges
or element as an addition which may be journal
ed or pivoted on the boom preferably longitu
dinally thereof and compactly with respect there
to.
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I
wherein means moves along and is actuated by
the rigid element forming a track and lever, and
which is in effect a universal connection with
linkage in turn operatively connected with the
forming tracks for wheels or rollers l3 journal
led on stubeshafts ill at the upper portion of
bucket ll. Bucket II is shown as of the type
closure means of the bucket.
terial through the top, and to discharge it
through a bottom opening normally shut by any
adapted to be“ ?lled with concrete or other ma
'
Still further, a prime object is to provide for
a pivoted closure of a bucket, a lever pivoted to
the bucket and operatively connected to the clos
suitable closure means I2’, that shown by way
30 of example being a plate or ?ap l3’ pivoted in
ure and in turn adapted for actuation through
thelinkage universally connected to the lever
and also connected slidably to the aforesaid rigid
element functioning as a track and lever.
Various additional objects and advantages will .
in part be pointed out and otherwise become
apparent from a consideration of the description
following, taken in connection with the accom
panying drawings illustrating an operative em
bodiment by way of example.
In said drawings, wherein like reference char
acters designate like or similar parts throughout
the different views,
Fig. 1 is a plan view illustrating the invention
in connection with a conventional boom;
Fig. 2 is a side elevation of the parts of Fig. 1;
place at M’ for movement from the full line or
closed position in Fig. 2 to the dotted line or
open position in the same figure.
In carrying vou'tmy invention, 1 provide an
elongated rigid element l5 arranged parallel to
one of the beams l2, and, for instance, located
between the beams. This rigid element it may
be of any desired cross-sectional shape, but is
shown as of inverted T-shape and as constituting
a track for a slidable shoe 16. It also functions
as a lever for moving such shoe 90° from the posi
tion of Fig. 3 to that of Fig. 4, so as through the
mechanism to be described, to move the closure
means I2 from and to the shut and open posi
tiohs. To the latter end, said element l5 has
trunnions on stub~shafts l1 rigidlyvattached to
opposite ends thereof, and journaled in bearings
l8 welded or otherwise fastened against the adja
Fig. 4 is an enlarged fragmentary view taken 50 cent vertical wall of associated beam l2. The
axis of movement of rigid element I5 is thus
through the boom and the mounting of the
parallel to the boom lil. When desired, in or
bucket thereon, with actuating parts of the lat
Fig. 3 is a vertical sectional view on an enlarged
scale taken on line 3——3 of“ Fig. 2;
.
der to prevent sagging of the rigid element IE, it
ter in closure-opening position;
Fig. 5 is a vertical section taken on the line
5-—5 of Fig. 2;
_
Fig. 6 is a horizontal section taken on the line
6-6, of Fig.
2;
p
g
‘
Fig. .7 is a horizontal section taken on the line
1-1 of Fig. 2';
‘
Fig. 81 is a fragmentary elevation of a modi?ed?
may have one or more stub-shafts l9 fastened
thereto on opposite sides of a cut-out 20, en
abling journaling of such stub-shaft or shafts on
bearing means 2| secured to the same beam l2
as the bearings [8 in a like manner.
Shoe or slide [5 and the rigid element l5 may
be interconnected in any suitable manner. For
2,407,410
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4
instance, shoe 16 may be generally of C-shape to
provide inwardly extending ?anges 22 in over
lapping relation to the base flanges 23 of the
rigid element i5.
taking of a compound movement on the axes 26,
28 and 353, thus having practically universal con
nection with rock-shaft 24, rocking the latter
through the connection with the cranks 3i, and
A rock shaft 24 is journaled transversely across
the bucket II, in suitable bearings 25 secured
the bucket. Pivoted at 26 to the slide or shoe
is a, link or rod 21 which is pivoted by a, pin
to a block 29 in turn pivoted at 30 to cranks
the rocker-shaft lowering the cranks 32 and ac
to
I6
28
3!
cordingly linkage 33 moving the closure 53' from
the full to the dotted line position in Fig. 9.
This movement may be to the full extent or to
any extent between fully open and closed posi
extending rigidly from the rock-shaft 24. It 10 tions.~ In order to shut or regulate to the desired
will be realized that the axes of the pivots 28
extent of opening of the element l3’, actuator 40
and 30 are at right-angles to each other, and
'is operated to retract the piston-rod 4t and
we have thus provided in effect a universal joint
thereby move the parts oppositely to the move
so that the link or rod 2'! may move to the right
ments speci?cally traced.
and left to and from the positions of Figs. 3 and 15
Shoe l6 may optionally be equipped with rollers
ll, when the rigid element I 5 is- actuated as a
to?engage and travelon track I5>for smoother
lever from the axes of stub-shafts I‘! and I9.
operation.
Said rock-shaft 24 at each end has a crank 32
Various changes may be resorted to provided
keyed thereon which is connected through link
they fall within the spirit and scope of the in
age 33 to the closure l3’. Speci?cally each‘ link
vention as defined by the appended claims. For
age 33 may consist of sections 34 and 35, piv
instance the track l5 may be suspended from
otally connected together at 36, with section 34
bothibeams H‘. as in the modi?cation of Figs. 8
pivotally connected at 3'! to the adjacent crank
and 9. In this form plates 50 bridge the beams
32, and with section 35 slidable through the open
l2 being welded to angles 5| in turn welded to
ing of a guide bracket 38, on the bucket, below 25 beams l2, or fastened in place in any other suit
which it is pivotally connected at 39 to closure
able manner. By means of stub shafts or trun
It’.
nions 52, track i5 is pivoted to plates 56]. A’ shoe
Any suitable prime mover or actuator may be
Hie correspondsto shoe l8, carrying rollers 53,
employed to operate the rigid element l5 as a
if desired, journalled on shafts 54 carried by shoe
lever. This means as shown in Figs. 2 and 5
I6a and arranged to travel on ?anges 23. Other
to advantage, may be a hydraulic cylinder 49,
wise, the reference characters apply as in the
but the showing thereof, however, is to be taken
?rst form and the operation isthe same.
as suggestive only since any othertype of actu
What is claimed is:
'
ator or prime mover may be employed. As the
1. Apparatus of the class described comprising
construction and actuationof a hydraulic cylin
a boom, a conveyor bucket movably mounted
der device such as 40 is well known, details are
thereon, said bucket having an outlet, closure
omitted. The cylinder ‘proper, however, shown
means for the outlet, a track member on the
boom, an operating means for'said closure means
at M is pivotally suspended at 42 from an in
verted U-shaped support 43 fastened to and ris
ing from the beams 12 constituting the boom.
Theslidable piston rod of the device 46 as shown
at 44, is pivo-tally connected at 45 to a crank 46
rigid with one of the trunnions or short shafts
ll. ,In this connection it is to be understood
that the actuator 40 need not be positioned and
located as shown, but may be positioned wherever
desired and operatively connected to the element
H5 at any preferred location.
‘
In the operation of the device, the bucket H
is free to slide on the boom ID in the usual man
ner, in either direction, usually being power
operated. At the same time, the actuating mech
anism for the c1osure'l3' has slidable connection
With the element or track l5 by the employment
of the shoe I6. As a result, the closure l2’ may
be opened, regulated and closed in any position
of the bucket with respect to the boom I 0, and
the flow of material in transit may at all times
be regulated, regardless of whether the bucket is
stationary or in motion. Prime mover 40 may
be operated either by retraction or extension of
the piston rod 44. In the example illustrated,
when the piston rod 44 is projected or extended
as in Figs. 2, 3 and 5, for instance, the ?anges of
rigid element or track l5 are lowermost and hor
izontal and closure I3’ is closed. In order to
actuate the closure l3’ to move it to the open
position suggested by the dotted lines in Fig. 9,
prime mover or actuator 40 is operated to retract
the piston rod 44, thereby raising crank 46 and
swinging, the track l5 in an arc of a circle, for
instance approximately ninety degrees (90°) in
40
interengaged with and movably mounted by the
track member, and actuating mechanism to move
said track member in an arcuate path normal to
the longitudinal axis of the boom to control the
position of said closure'means;
V
2. Apparatus of the class described comprising
45 a boom, a conveyor bucket movably mounted
thereon, said bucket having an outlet, closure
means for the outlet, a track member pivoted on
the boom, an operating means for said closure
means interengaged with and movably mounted
by the track member, and actuating mechanism
to move said track member as a lever relatively
to the boom to control the position of said clo
sure means.
I
'
3. Apparatus of the class described comprising
a boom, a conveyor bucket movably mounted
thereon, said bucket having an outlet, closure
means for the outlet, a track member pivoted on
the boom on an axis parallel to the longitudinal
axis of the boom, operating means for said clo
sure means interengaged with and movably
mounted by the trackjmember, and actuating
mechanism to move said track member as a lever
relatively to the boom to control the position of
said closure means.
4. Apparatus of the class described comprising
a boom, a conveyor bucket movably mounted
thereon, said bucket having an outlet, closure
means for the outlet, a track member on the
70 boom, said track member having trunnions jour
nalling the same on the boom, an actuator eccen
trically connected to the track member, an oper
the speci?c instance given, on the axes of the
ating means for said closure means interengaged
stub-shafts I1 and I9 to the position shown in
with and movably mounted by the track mem
Fig. 4. As a result, rod or link 21 is raised, par 75 ber,, and actuating mechanism to move said
2,407,416
6
thereon, said buckethaving anoutlet, closure
track member as a lever relatively to the boom
means for the outlet, a track member pivoted on
to control the position of said closure means.
the boom, an operatingmeans for said closure
5. Apparatus of the class described comprising
means comprising linkage slidably interengaged
a boom, a conveyor bucket movably mounted
with the track member, a rock shaft on the
thereon, said bucket having an outlet, closure 01 bucket, anlapproximately universal joint connec
means for the outlet, a track member on the
tion between the rock shaft and linkage, an
boom, said track member having trunnions jour
operative connection from the rockshaft to the
naling the same on the boom, an actuator eccen
trically connected to ‘one of said trunnionsan
operating means for said closure means interen—
gaged with and movably mounted by the track
member, and actuating mechanism to move said
track member as a lever relatively to the boom to
control the position of said closure means.
_
closure means and actuating mechanism to move
said track member as‘a lever relatively to the
boom to control the position of said closure
means.
’
.
12. Apparatus of the class described compris
ing aboom, a conveyor bucket slidably mounted
said bucket having an outlet, closure
6; Apparatus of the class described comprising 15 thereon,
means for said outlet, an elongated rigid track
a boom, a conveyor bucket‘ movably mounted
member pivotedon the boom on an axis parallel
thereon, said bucket having an outlet, closure
to the longitudinal axis‘ of the latter, said ‘track
means for the outlet, a track member on the
boom, operating means for said closure means
member having an angular ?ange, linkage slid
having a shoe interengaged with and movably 20 ably interengaged with said track member at
mounted by the track member, and actuating
mechanism to move said track member relatively
to the boom to control the position of said clo
sure
means.
K
'
‘
7. Apparatus of the class’ described comprising
a boom, a conveyor bucket movably mounted
thereon, saidbucket having an, outlet, closure .
means forthe outlet, a track member pivoted on '
» said ?ange, a rock shaft journaled on the bucket,
a block ecoentrically pivoted to the rock shaft,
said linkage being pivoted to said block on a
different axis from the pivotal axis of said block,
means to control the position of the closure means
having crank connection with said rock shaft, and
actuating mechanism to move said track member
asa lever to control the position of said closure
the boom, an operating means for said closure
13. Apparatus of the class described compris
means having a shoe intereng'aged with and mov 30
ing
a boom, a conveyor bucket slidably mounted
ably mounted-by the track member, and actuat
thereon, said bucket having an‘ outlet, closure
ing mechanism to move saidv track member as a
means for said outlet, an elongated rigid track
lever relatively to the boom'to control theposi
means.
tion of said'closure means.
,
,8. Apparatus of the class described comprising
a boom, a conveyor bucket movably mounted
thereon, said bucket having an outlet, closure
means for the outlet, a track member on the
boom, an operating means for said closure means 7,
7
'
'
V
7 member pivoted on the boom on an axis parallel
to the longitudinal axis of the latter, said track
member having an angular ?ange, linkage slid
ably interengaged with said track member at
' said flange, a rock shaft journaled on the bucket,
‘a block eccentrically pivoted to the rock shaft,
said linkage being pivoted to said block on a dif- ‘
having a shoe interengaged with and 'movably
ferent axis from the pivotal axis of said block,
mounted by the track member, a rock shaft on
means to control the position of the closure means
the bucket operatively connected to said shoe and
having crank connection with said rock shaft, ac
to said closure means, and actuating mechanism
tuating mechanism to move said track member
to move said track member relatively to the boom
45 as a lever to control the position of said closure
to control the position of said closure means.
means comprising a crank connected to the track
9, Apparatus of the‘ class described comprising
member, and an actuator having relatively slid
a boom, a conveyor bucket movably mounted
able parts to move the last-mentioned crank.
thereon, said bucket having an outlet, closure
14. Apparatus of the class described compris
means for the outlet, a track member pivoted on
ing a boom,‘ a conveyor bucket slidably mounted
the boom, an operating meansfor-said closure 50 thereon, said bucket having an outlet, closure
means having a shoe interengaged with and mov
means for said outlet, an elongated rigid‘ track
ably mounted by the track member, a rock shaft
member ‘pivoted on the boom on an axis parallel
on the bucket operatively connected to said shoe
to the longitudinal axis of the latter, said track
and to said closure means, and actuating mecha
member having an angular ?ange, linkage slid
nism to move said track member as a lever rela 55 ably interengaged with said track member at
tively to the boom to control the position of said
said ?ange, a rock shaft journaled on the bucket,
closure means.
a block eccentrically pivoted to- the rock shaft,
10. Apparatus of the class described compris-'
said linkage being pivoted to said block on a
ing a boom, a conveyor bucket movably mounted
different axis from the pivotal axis of said
thereon, said bucket having an outlet, closure 60 block, means to control the position of the clos
means for the outlet, a track member on the boom,
ure means having crank connection with said
an operating means for said closure means com- > V
rock shaft, and actuating mechanism to move
prising linkage slidably» interengaged with the‘
said track member as a lever to control the posi
track member, a rock shaft on the bucket, an
65 tion of'said closure means, said boom comprising
approximately universal joint connection be
tween the rock' shaft and linkage, an operative
connection from the rock shaft to the closure
‘spaced beams, said track member being located
between the beams, a support on the beams, a
cylinder pivotally suspended from the support, a
means, and actuating mechanism to move said
rod slidably mounted by the cylinder, and a crank
track member relatively to the boom to control
connection between the rod and one of said trun
the position of said closure means.
70
11. Apparatus of the class described compris
ing a boom, a conveyor bucket movably mounted
' nions.
JAMES H. FITZGERALD.
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