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Патент USA US2129688

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56p‘; '13, 1938.
A. T. HENDRIX
2,129,688
VIBRATED CONVEYER'FEEDER
Filed July 20, 1936
2 Sheets-Sheet l;
FIG.
FIG. 2
'Hndrew T Hendrix
INVENTOR
BY Mn”
1
ATTORNEY
’
Sept. 13, 1938.v
A. T. HENDRIX
2,129,688 I
VIBRATED CONVEYER FEEDER
Filed July 20, 1936
2 Sheets-Sheet 2
FIG. 3
%%
w
29
FIG. 4
Andrew 71 Hendrix
INVENTOR
BDY
/
AT: I6RNEY
2,129,688
Patented Sept. 13, 19381! - ,
' - UNITED, STATES PATENT OFFICE
'
"
'
1
2,129,688
.
_
vnsnA'rEn CONVEYEB, FEEDER
Andrew '1'. Hendrix, Knoxville, Tenn.
Application .luly 20, 1936, Serial No. 91,634
'4 Claims. 7 (or. 83-44).
I
_ .'(Gra-nted‘under the act of March 3, 1883, as
-
amended April 30, 1928; 3700. G. 757‘)
This application is made under the act of March I pulverized by the successive impacts with the
3, 1883, as amended by the act of April\30,=-1928, hammers, represented by hammer 3. The mate
and the invention herein described, if patented, rial which has been reduced to a suf?cient ?neness
may be manufactured and used by or for the Gov drops out of the mill through the screen I3. It is
‘6 ernment for governmental purposes without the necessary to regulate the flow of charge delivered
by the‘feeder 9, ?rst in order to prevent overload
payment to me of any royalty thereon.
ing the motor 5, and second, in order to maintain
'This invention relates to a process of and appa
ratus for controlling the amount of feed delivered a su?iciently high rate of charge so that the maxi
by a vibrated conveyer feeder.
10
mum emciency may be obtained from'the motor 5.
'
One of the objects of this invention is to provide
a means for charging a material continuously and
uniformly with a minimum of attention by the
operator. Another object of this invention is to
provide a means of control for the amount‘ of
'15 charge delivered by either a mechanical or an
This regulation of the discharge of charge from 10
feeder 9, is obtained by the use of the dampener
I5, the ends of vwhich are attached to the main‘
body of the mill and the base attached to- the core
of the solenoid I ‘I. In normal operation, the shoes
of the dampener I5, located between the ends and 15
electrical vibrated conveyer. Other objects of
this invention include the provision for control of
the base, press lightly on the sleeve welded to the
underneath side of the feeder 9, through which
a charge in order to produce a maximum output
passes the shaft of the mechanical vibrator. If‘
with any given size of motor.{
'
I
20 ' Ihave discovered an effective means for charg
ing grinding mills and other devices into which a
the amount of charge delivered to the body of the -
mill gradually exceeds the normal amount of 20
charge, the motor 5, gradually approaches an
overloaded condition, under which condition con
under de?nitely controlled circumstances, taking. siderable additional current is required to operate
feed must be admitted either at a uniform rate or
,, into account variations in the character of the
the motor. The [solenoid I1, is wired in- series
25 charge, by controlling the operation of a vibrated
with the motor 5, so that as the load on the motor
5I
5, approaches the full load capacity of the motor,
directly or indirectly by the current demand of the the solenoid I1, gradually actuates the dampener
electric‘ motor which is used as the prime mover . I5,'thereby reducing the amount of charge deliv
conveyer feeder by means of. a solenoid actuated
' for the device which is being fed.
30
.
In the accompanying drawings, which form a
part of the speci?cation,‘ and wherein reference
symbols refer to like parts whenever they occur,
Fig. 1 is a diagrammatic, vertical, sectional view
_ of one form. of apparatus for the embodiment of
ered by the feeder 9. Thus a continuous adjust
ment takes place so that at all times the maximum
amount of charge is being admitted into. the body
of the mill with the resulting maximum e?iciency
of operation without constant personal attention
of the operator.
'
v
In Fig. 2, the ends of _the dampener I5, are
Fig. 2 is a diagrammatic, plan, ‘sectional view of -' shown. attached to the frame of the mill at points
I9, the base of the dampener I5,.is shown attached
the apparatus shown in Fig. 1,
_
I
3" my invention in a hammer mill,
'
.
’
Fig. 3 is a somewhat enlarged diagrammatic,
vertical, sectional view of the vibrated ‘conveyer
‘"7 feeder and associated controlling mechanism, Y
to the core 2| , of the solenoid I'l.
' In Fig. 3, one end of the dampener I5, is shown
attached to the frame of the mill at points I9. 40
' Fig. 4 is a diagrammatic, plan, sectional view of
The base of the dampener I5, is shown attached to .
the somewhat enlarged diagrammatic, vertical,
the core 2|, of the solenoid I1. The core 2|, of
sectional view of the vibrated conveyer feeder and . the solenoid I1, is supported by an adjustable
associated controlling mechanism as shownin spring device 22, in order- that the dampener or 5
45
Fig. 3.
>
,
. '
In Fig. 1, the-hammer disc I, to which hammers,
‘represented by hammer 3, are attached, is rotated
at the appropriate speed by the electric motor 5.
The charge to the hammer mill is‘ admitted
5 O through the inlet ‘I, onto the mechanically vi
brated conveyer screen feeder 9. The feeder 9,
is supported at four points by stiff wire members,
represented by supports II. The charge which
braking means may be properly adjusted toinor
mal conditions of operation. The shoes 23, of the
dampener I5, contact the sleeve 25, which serves _
as a bearing for the shaft 21, of the mechanical
vibrator, the principal element of which is the 50
unbalanced pulleys, represented by pulley 29. >
The solenoid I1, is shown wired in series with the
motor 5.
.
-
.
.
a
‘
.In Fig. 4, the ends 'of the dampener I5, are
has’ been advanced to the end of the feeder VII, _ shown attached to the frameof the mill at points
55 drops" into the body of the hammer mill‘and is. r I 9, and the base of the dampenerli, is shown ‘5
2
2,129,688
attached to the core 2|, of the solenoid II. The
shoes 23, of the dampener l5, contact the sleeve
25,'which serves as a bearing for the'shaft 21, of
the mechanical vibrator, the principal element of
--which is the unbalanced pulleys 29.
’\
c It is evident that there are numerous factors
of certain details without departing from its
spirit or scope.
I
claim:
I
.
-
.
1. Inan apparatus for continuously comminut
ing a charge, the combination which comprises, 5.
1a hammer mill, a vibrated conveyer feeder for'
which will in?uence conditions for the most satis
factory operation of my invention, the actual
chargingthe hammer mill, an electric motor for
driving the hammer mill and for vibrating the
limits of which cannot be established except by a
conveyer feeder, and a means for dampening the
vibrations of the vibrated conveyer feeder, said 10
10 detailed study of each installation involved.
The-vibrated conveyer feeder may be actuated
by either an electrical or mechanical means. The
means comprising a solenoid having a core, the
examples of vibration of the conveyer feeder by
mechanical means include the use of rotating oif
the’ electric‘motor and the core of the solenoid
connected to the vibrating conveyer feeder to
vibrate therewith and to automatically and con 15
tinuously control the amount of charge to the
15 balance pulleys or rotating cams.
'
The vibrated conveyer feeder may be used in
conjunction with any mechanical device which
requires power for, its operation, such as, grind
ers, mixers, or .even other conveyers.
In the
20 operation. of this invention ity is necessary that
the conveyer be operated by means of an elec
trical motor since the control of the feeder is
e?ected by taking advantage of the change in
current demand of the motor which is used as
25 the prime mover.
The control of the vibrated conveyer feeder is
I effective by the use of a vibration dampener
with the degree in which this dampener is ap
plied changing the amplitude of the vibration
30 of the feeder and thereby regulating the amount
of the feed discharged.- The dampener actually
coil of the solenoid being wired in series with
mill.
’
'
2. In an apparatus for continuously comminut
ing a charge, the combination which comprises,
a mill, an electric motor for driving the mill, a
vibrated conveyer feeder for charging the mill,
[and a means for dampening the vibrations of
the vibrated conveyer feeder, said means com
prising a solenoid having a core, the coil of the
solenoid being wired in series with the electric
motor and the core of the solenoid connected
to the vibrating conveyer feeder to vibrate there
with and to automatically and continuously con
trol the amount of charge to the mill.
I“
3. In an apparatus for feeding materials from 30
a vibrated conveyer feeder to a device operated by
an electric motor, the combination which com
cluding a simple braking device, a device which . prises, an electric motor for driving the device, a
will retard the motion of the feeder in one di
vibrated conveyer feeder, and a means for‘ damp
rection, or a device which may retard the motion ening the vibrations of the vibrated conveyer
of the feeder in both directions. The dampener feeder, said means comprising a'solenoid having '
is constructed so that one and both the ends a core, the coil of the solenoid being wired in
are secured to the frame of the machine and series. with the electric motor and the core of
the other end or the center where the. device is the solenoid- connected to the vibrating conveyer
40 somewhat U-shaped, is connected to the core of ‘feeder to vibrate therewith and to automatically 40
may be constructed in a variety of forms, in
a solenoid. The controlling means proper, men
tioned, above, are located intermediate between
the attachment to the frame and the core of the
solenoid. The core of the solenoid is supported
and continuously control the amount of ‘charge to
the device being fed.
4.‘In an apparatus for feeding materials from
a vibrated conveyer feeder to a device operated
.by'an adjustable spring, device in order that _by an electric motor, the combination which 45
the dampener or braking means may be properly comprises, an electric motor for driving the de
adjusted to normal conditions of operation. Y
vice, a vibrated conveyer feeder, and a means
The vibration control or braking means is
for dampening the vibrations of the vibrated
actuated by the solenoid. The solenoid may be
50 wired in series with the electric motor and there
by directly in?uenced by the amount of the cur
rent which passes through it. The variation in
current demanded by the motor may be used
conveyer feeder, said means comprising an elec
tro-magnet having a coil element and a core
element, the coil element of ‘the electro-magnet
being wired in series with the electric motor and _
one of the said elements of the electro-magnet
to operate a_relay which, in turn, regulates the‘ being connected to the vibrating conyeyerfeeder
55 current required to operate the solenoid inde
pendent of the current supply of the motor.
It will be seen, therefore, that this invention
actually may. be carried out by the modification
to vibrate therewith and to automatically and
continuously control the amount of chargeto the
I ‘device being fed.
ANDREW T. HENDRIX.
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