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Патент USA US2412554

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D¢C~ 17, 1945 v
Filed June e, 1945
2 shevetsfsheet 1`
Dec. 17, 1946.
Filed June 6, 1945
2 Sheets-Sheet 2
Patented Dec. 17, 946
Raymond Q. Armington, Shaker Heights, Ohio,
assigner to The Euclid Road Machinery Co.,
Euclid, Ohio, a corporation of Ohio
Application .lune 6, 1945, Serial No. 597,793
2 Claims. (Cl. ISS-229)
This invention relates to improvements in pul
ley cleaning construction and more particularly
to the removal of dirt from the pulley of a con
veyor loader working under dirty conditions.
An object of the present invention is to pro
vide a blade for scraping dirt from a pulley of the
type described together with novel rotating spring
moves thereover. Embodied in this larger appa
ratus is the conveyor l2 consisting of the frame
i 2a, a tail pulley |212 and a head pulley (not
shown), there being an endless conveyor belt t3
passing over the head and tail pulleys and driven
by means at the head pulley, not disclosed here
but fully disclosed and described in the copending
application mentioned above. Preferably the
means for carrying the dirt away.
Another object of the present invention is to
upper run of the conveyor passes over a series of
provide cleaning means >for a pulley driven by 10 troughing idlers i4, it being understood that the
the rotation of the pulley itself.
dirt travels on the upper run of the conveyor belt
Other objects of the invention include the novel
from the lower left-hand corner of Fig. l diago
construction and arrangement of the parts
nally upwardly toward the right-hand end of
whereby the pulley is elîiciently cleaned, the dirt
Fig. l and on beyond this point to discharge into
is eiiiciently carried away, and the parts are so 15 a vehicle which carres the dirt away as described
constructed and arranged that they will operate
for a long time Without interruption even when
subjected to severe operating, conditions.
in the copending application mentioned. Prefer
ably also, the lower or return run of the conveyor
will travel on plain cylindrical idler rolls to keep
I Other objects and advantages of my invention
the conveyor belt from sagging too much. Pref
will be apparent from the accompanying draw 20 erably also, a dirt shed (not shown) is provided
ings and description, and the essential features
between the upper and lower runs of the con
thereof will be summarized in the appended
veyor to insure that any dirt dropping oil the
In the drawings:
Fig. l is a top plan View ci a portion of a belt
conveyor adapted to handle dirt or the like show
ingl one embodiment of my invention and with
certain parts broken away to more clearly show
the construction;
Fig. 2 is a side elevational View of the device of "
Fig. l with one of the beams broken away to
more clearly show the conveyor;
Fig. 3 is a top plan view, enlarged, of a portion
of Fig. l and taken in the position of line 3--3
of FigA _4, with certain oi the parts .being shown in
section to more clearly illustrate the construc
upper run of the conveyor will be discharged side
ways out the openings l5 in the conveyor frame.
This dirt shed is of a usual type of shallow in
verted V-iorm in section, the central ridge of the
shed running parallel with the center line of the
upper run of the conveyor and the sides thereof
sloping toward the openings l5 on each side of
the conveyor frame.
Devices of the above-described type do not
operate Well unless dirt is prevented from clinging
to and building up upon the tail pulley |213. To
prevent this, the outer cylindrical surface of this
pulley is hardened and provided with a smooth
iinish, and a scraping blade i6 of hardened metal
engages the surface of the pulley, as ibest seen in
Fig. 4 is an elevational view or" the right-hand
Fig. 4, substantially tangentially to the cylindrical
end of the device of Fig. 3; while
pulley surface and on the side thereof where the
Fig. 5 is a View taken along the line 5--5 of 40 surface of the pulley is moving downwardly as
Fig. 3.
the pulley rotates in the direction of the arrow of
Certain features of my invention are applicable
Fig. 4 due to the travel of the belt i3 as driven by
to many types of apparatus, but Ihave chosen to
the head pulley mentioned above. Preferably
illustrate as one embodiment the application of
the blade I6 is thin and resilient having the char
my pulley cleaning apparatus as applied to a 45 acteristics oi spring metal for a. purpose later de
digging and loading device which is fully disclosed
inthe copending application of Raymond Q. Arm
pan i? is provided for collecting the dirt
ington and George E. Armington, Serial Number
from the blade i6. This pan is generally of the
593,412, ñled May l2, 1945, to which reference
form oi a long hollow cylinder having a cylindrical
may be had for a more complete description of the 50 wall around substantially three quarters of the
loader device. It is suñìcient to state here that
perimeter of the cylinder, leaving the open space
digging and dirt-guiding devices generally in
ila directed toward the point where the blade I6
dicated by the reference character iii herein are
engages the pulley surface. The side of the lpan
mounted on beams Il which cause the digging
the pulley is bent out of the generally
.devices to enter into the ground as the equipment 55 nearer
cylindrical form to lie parallel to the blade IG
along the pan portion l'lb, and the blade I6 is
secured to this part oi the pan. Preferably, but
bracket 3J which, as best seen in Fig. 5, has a
vertical Wall 3Ia parallel to the pan portion l'lc,
not necessarily, the left-hand end of the blade l5,
and above this an inclined portion 3Ib which is
as seen in Fig. 3, is provided with a notch lSa
sloped so as to form a dirt shed.
opening toward the adjacent end of the blade and
adapted to receive astud i8 which is fixed on the
pan portion i'êb where it extends to the left (Fig.
is stiifened and held iirmly in place by means of
a tubular strut 32 which is welded between the
bracket 3| and an L-shapedv plate 33 which in
turn is rigidly secured to the part I2C by means
not shown. In the inclined wall Slb is inserted
a sleeve 34 which extends clear through the wall
and is Welded thereto. The inner diameter of
this sleeve is chosen to i'lt the outer diameter of
the sleeve Hd, previously described, so as to
firmly support the end of the dirt pan. The
shaft 23 then passes through the sleeve 313 and
through the hollow sleeve Hd as clearly shown
in Figs. 3 and 5.
It will be noted that the above construction
permits the tilting of pan l1 about the sleeve
ll'd as a pivot. In assembling the parts, the
3) beyond the generally cylindrical portion of the
pan il. rl‘his stud i8 is rigid with the pan and
has an enlarged head lying on the pulley side of
blade lâ so as to ñrrnly hold the blade there. At
the opposite end a stud bolt I9 passes through
blade it into the >pan portion l'lb to ñx that end
of the blade. Preferably the yblade i6 is provided
with paralle1 top and bottom edges Iâb and |60,
and the notch iba and the hole which receives
stud bolt lâ are both midway between edges IBD
and itc so that the blade is reversible.
The left-hand end of pan Il, as viewed in Fig.
3, is substantialh7 closed by the end plate llc to
which is rigidly secured a sleeve l'íd which sup
ports this end of the pan in a manner presently
described. The right»hand end of the pan, as
viewed in Fig. 3, is open for the discharge of dirt,
and this end of the pan is welded to a mounting
flange 2l) through which pass bolts 2l to secure
the same to the conveyor frame. Preferably
also, an L-shaped plate 22 extends substantially
the full length of the blade I6 with the longer leg
of the L parallel to and engaging the blade to
support it firmly. ThisV L-shaped plate is welded
to the pan l'l rigidly and provides a pocket into
which the blade I5 is slipped. Preferably, but
not necessarily, a small portion of the top of the
dirt pan is cut away near the dirt-discharge end,
This bracket
pan ls so tilted to move the left-hand endof
scraper blade lli in stressed position against the
pulley surface lZb, and thereafter the other end
of the pan is secured in place by the bolts 2l so
as to yieldingly press the blade H3 at all points
against the pulley surface |212.
It will be noted that the driving connections,
previously described, and more clearly shown at
the left end of Fig. 3 and housed in the gear cas
ing 35, are placed far enough to one side of the
conveyor belt I3 so that dirt falling from the
belt is not near the driving parts. It will be
noted also that all of the parts are so housed
and protected that dirt does not easily get into
the moving parts, and by this means the pulley
is kept continuously clean, and the dirt is contin
uously moved away from the parts which might
be injured thereby.
Referring to Fig. 5, it will be noted that any
as best seen in Fig. 3, to insure that no dirt piles
up on top of the pan but falls directly into the
pan for discharge by the means presently de
'I‘he means for discharging the collected dirt 40 dirt falling off the upper run ISa of the con
veyor belt will be deflected by the Vdirt shed 3.Íb
out of the pan l'l comprises a long helical spring
and fall to the ground instead of falling upon
23, lthe outer elements of which generally con
the lower run |317 of the belt.
form to the bottom of the dirt pan. Means is
What I claim is:
provided forrotating this spring in a direction
to carry the dirt out the open end of the pan. ` ‘
I provide a> novel drive means which utilizes the
normal rotation of the tail pulley lZ‘b. Mounted
on the left end of this pulley, as viewed in Fig.
1. In combination with a conveyor and a ro
tatable pulley over which said conveyor passes,
a dirt pan adjacent said pulley, said pan being
a major circumferentialiportion of a hollow cyl
inder positioned with its axis parallel to the axis
3, is a pinion 213 which is keyed to the pulley
shaft to rotate therewith. Meshing with this ¿H of said pulley and with an open side of said
cylinder substantially tangential to saidpulley on
pinion is the large gear 25 which in turn rotates
a side of the latter which rotates downwardly to
shaft 2B which is connected through a universal
ward said pan, a scraper blade oi' spring metal
joint device 2l to the shaft 28 which is rigidly
resiliently engaging said pulley on said side
connected with the spring 23. Suitable bearings
thereof, said blade connected with the open
and gear case are provided for the pinion 24 and
side of said cylindrical pan, a helical spring in
gear 215, as shown in the drawings, but these are
said pan extending longitudinally thereof, said
of usual and known type. The details of the
spring substantially conforming to the inner
universal joint device 2l need not be described
walls of said pan, said pan having an open end,
here as they form no part of the present inven~
tion and merely provide an eilicient drive even 60 and means for rotating said Spring in a direc
tion to carry dirt out said Open end of said pan,
though there is slight misaligninent of shafts 25
said last named means having an operative con
and 28. It will be noted that the shaft 28 passes
nection with said pulley to provide driving means
through the hollow central portion of the sleeve
I'ld, these parts being coaxial with the helical
spring 23. 'Spring 2‘3 is wrapped' around and 65
2. In combination with a conveyor and a ro
tatable pulley over which said conveyor passes,
Welded to collar 3o which iS threaded on the in
a dirt pan adjacent said pulley, said pan being
ner end of shaft 28. It results from this con
a major circumferential portion of a hollow cyl
structionA that as the belt I3 pursues its normal
lnder positioned with its axis parallel to the axis
course of travel, the pulley l2b is rotated, and
by the gear connections just described causes 70 of said pulley and with an open side of said
cylinder substantially tangential to said pulley
rotation oi spring 23 in a direction to discharge
on a side of the latter which rotates downwardly
dirt out the open end of the pan Il.
toward said pan, a scraper blade of spring metal
The details at the left end of pan Il, as viewed
in Fig. 3, will Anow be described. , Secured to a
portion of- the conveyor frame marked I2C is a
resiliently engaging said pulley on said side
thereof, said blade rigidly connected with the
Open side of said cylindrical pan, a helical spring
in said pan extending longitudinally thereof, said
pan having an open end, interiitting bearing
iently engaging said pulley, a stub shaft rigid
with said spring and coaxial therewith, and
means for rotating said shaft in a direction to
cause said spring to carry dirt out said open end
the end opposite said open end `for mounting said 5 of said pan, said last named means having a driv
members on Said conveyor and on said pan at
pan oscillatably about said bearing members,
other means nearer the open end of said pan for
holding the same with said scraper blade resil
ing connection with said pulley.
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