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Патент USA US2121628

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June 21, 193s.
w_ B, FLEWNC;
2,121,628
CONVEYER
Fiied July so, 1935
2 Sheets-Sheet,4 1
Júnè 21, 1938.
w. à. FLEMING
I 2,121,628
CONVEYER
Filed July 30, 1935
2 Sheets-Sheet 2
ATT'Y
Patented `lune 21, 1938 ì
ZJZLGZS
UNITED STATES
PATENT ’ ortica
2,121,628 ì
coNvEYER.
‘ William B. Fleming, Columbus, Ohio, assignor to
_The Jeffrey Manufacturing Company, a cor
- poration of Ohio
Application `July 30, 1935, Serial No. `33,850`v
11 Claims. <01. 19a-171)
This invention relates to a conveyer, particu
tion' mechanism I5 and chain and sprocket driveA
larly of the type adapted to gather coal after it means I6.
is shot'down in a mine room.
The tail section B of the conveyer is provided
An object' of -the invention is to provide a with an adjustable shaft Il carrying a sprocket
5f conveyer of the above mentioned type in which a I8 adapted to mesh with the chain II. Appro- 5
hold-down roller is provided at the tail end which pri'ate’chain tensioning means I9 are provided
will permit free passage of bent flights.
for maintaining proper tension on the chain I I
`Another object of the invention is to provide andv providing for the slackening of> said chain
a conveyer of the above mentioned type in which
II, whereby the links thereof may be discon
10“ a hold-down roller is provided at the tail ’end nected tol insert or remove links to vary the 10
which roller is grooved to permitA free passage of length thereof when the length of the entire
flight attaching rivet heads.
conveyer is‘varied.
`vOther objects of the invention will appear
hereinafter, the novel features and combinations'
1`5- being set lforth in the appended claims.
Fig. 1 is a plan view of a conveyer comprising
my invention;
Fig. 2 isa side elevational view of the device
of Fig. 1;
20
Y
Fig. 3 is an enlarged perspective View of the
tail section of my invention;
. ~
Fig. 4 is a sectional view of the tail section
taken on the line 4_4 of Fig. 1 looking in the
direction of the arrows;
25
Fig. 5 is a side elevational view of the tail sec
tion of the conveyer of my invention; and
Fig. 6 is a transverse sectional view taken on
the line 6_6 of Fig. 1 looking in the direction of
the arrows.
`
Referring particularly to Figs. 1 and 2 of the
drawings, there is seen a conveyer `comprising
my invention which is particularly adapted to be
employed in a coal mine as a face or as Va room
conveyer. That is, this conveyer, when used as
35 a face conveyer, will be placed near the face of
a coal mine room, which face is cut and> shot
down, after which theshot-down co‘al is loaded
onto the conveyerand- bysaid conveyer delivered
to room conveyers, which may be of the same
40 construction, by which it is conveyed from the
room onto appropriate mine cars, or the like.
The said face or roomv conveyer comprises a
head section vA, a tail section B and one or mo-re
intermediate sections C, which may be remov
45 ably attached by angle and bolt clamp means
8 and 9. The number of intermediate sections
C may be varied at will to determine the length
of the entire conveyer. The three sections A, B
and C cooperate to form acontinuous trough IIl
having a bottom plate I0', within which trough
is adapted to travel a continuous chain II carry
ing material conveying flights I2. The head sec
tion A is provided with a drive shaft I3 which is
driven from al motor I4 through a speed reduc
1
’
It may be noted that the head section A is
provided with aY diverging bottom wall 2U and a<
dividing plow or deflectorZI, which plow 2I is 15
positioned in advance of drive sprocket 22 car
ried on shaft I3. - Said diverging bottom wall 20
and plow or 'dei-lector 2I are effective to free any
material 'which may be’caught under flight I2
as the Hight approaches the shaft I3.
As best seen'in Fig. 6 of the drawings, the -
return path of the chain II and the flights I2
’beneath the trough I0 comprises a pair of wear
strips 23, 23 which extend longitudinally of the
trough I0 and adjacent the sides‘thereof. These
strips are attached to transversely extending
pipes I I ’ which constitute supports for the inter
mediate sections C.
Referring particularly to Figs. 3, 4 and 6, at
tention is directed to the particular construction
off the tail section- B and more particularly to
the- construction of the hold-down roller 24. It
has been found in practice that the flights I2
sometimes become bent `as illustratedin Fig, 6
and, unless special means are employed, such as
herein disclosed, :the hold-down roller or a flight
is apt to- become broken when the bent flight
attempts to pass under the'hold-down roller. To
obviate this undesirable feature, I provide the
hold-down roller 24 with a pair of end sections
25, 25 which are frusto-conical and of reduced
diameter progressively outward toward each end
thereof.
'
As is well illustrated by Fig. 6A of the drawings,
this particular construction of the roller willv`
allow a bent flight I2 to pass thereunder without
damage to the flight or the roller.
It will, of course, be obvious that the hold#v
down'roller ‘Mis highly desirable to the end that
the chain II and the flights I2 will be guided to 50
the bottom of the trough as they emerge from
the tail section B.
`
The ñights I2 are most readily attached to
the chain II by rivets 26 which co-operate with
2,121,628
2
wing links 21 of the chain II, which rivets 26
have projecting heads.
of parts without departing from the spirit and
defined by the claims
' scope of the invention as
Another feature of the hold-down roller 24 re
sides in the provision of a pair of circumferential
grooves 28, 28 which allow free passage of the
heads of rivets 26 under said hold-down roller
24. Between the grooves 28 the hold-down roller
24 preferably comprises a cylindrical section 29.
In addition to the elements above specifically
10 described, it is evident that the tail section B
comprises a box type frame 3B including a piv
oted top cover 3|, provided with handles 32 andv
reinforcing angle members, which is adapted to
hereto appended, and I wish therefore not to be
restricted to the precise construction herein dis
closed.
Having thus described and shown an embodi
ment of my invention, what I desire to secure by
Letters Patent of the United `States is:
protect the shaft I'I, the sprocket I8 and hold
15 down roller 24 from the coal` as itis shot down
from the room face.
In the operation of the device comprising my
invention as a face conveyenl the conveyer is
preferably placed near the face of a room. in a.
20 coal mine after appropriate kerfs have been cut
in said face. The coal’ is then shot down and
in some instances the conveyer will be almost
buried; by the shot-down coal. The motor I4
may then be- started and the conveying. mecha
25 nism, including the chain H and the flights I2,
will- clear the trough I0 of filled coal and dis
charge it into another' conveyer ory anyappro
priate means forremovi'ng the coal. The addi
tionai shot-down coal;- will'zthen.y be loaded’ into
trough Izïl` by which 'rtY will beconveyed away as
aforesaid.
Hold-down roller 24 will be operative to guide
the chain I1I' andthe flights. I2 to the' bottom of
the.'> trough. IiiA as theyY emerge.~ from the tail sec
tion B. As was.l above pointed out, thetapering or
frusto-conical. end' sections 25“, 25v ofi the hold
down roller 24V` permit freeV 'passage of> any bentv
flight
I2 thereunder. The. circumferential
grooves 281,. 28’ also. permit free' passage of the
projecting heads'.- of rivets. 2'6; thereunder. As'the
45
coal is discharged over the-head section’A of
conveyer, the diverging bottom' wall Zûf and
plowv 2'I guide the material to each side 'of
central drivesprocket 22 and free flights I2' of
particle of coal which is caught thereunder
the
the
the
any
.
The particular arrangement of the sprocket
IB', shaft Il'Ii, roller 24, trough bottom: I0" and
chain I I, is a feature of my invention and is pro
vided to. the end. that the overall height of the
conveyer will be maintained ata minimum to ac
comm'odate` itself to a low vein mine. As best
seen in Fig.. 4, the shaft I"II and sprocket I8` are
so positionedthatthelower or return run'of chain
I I ishorizontal, or, in other words, said lower’run
extends tangentially from. saidV sprocket I8.
TroughA bottom Iii" is so. positioned as. to provide
for> thisîconstruction. This results ina minimum
of friction between, flights; I2’. and guides'2-3,which
increases greatly thev life of both. This'arrange
ment of parts also provides for the' positioning
60
of bottom IU’ in the- lowest possible position for
the purpose of mai-ntainingia minimum trough
height, as above mentioned. However, unless
some1» hold-down means were provided- for the
upper run. of. the; chain». I»I., it would` not contact
the trough bottom I0! as it emerges from tail
section B, and coal: would get. caught under the
flights I2; Hold-down roller 24 insures that the
ñights will contact the trough bottom i0" as they
emerge from the said tailv section B.
l. In a conveyer, the combination with a
trough, of a continuous chain, flights carried by 10
said chain, head and tail sprockets for said
chain, a hold-down roller adjacent said tail
sprocket adapted to guide said chain to a posi
Ytion on the bottom of said trough, said roller be
ing vof reduced diameter progressively outward to 15
ward each end to permit bent flights to pas's
It is also
to be noted that the hold-down. roller v2l! is ade
quately protected from falling coal by the rein
forced top` 3l of said tail section B.
Obviously those skilled in the art may make
75 various changes in the details and’ arrangement
thereunder.
2'. In a conveyen, the combination with a
trough, of a continuous chain, flights carried by
said chain, head and tail sprockets for said 20
chain; a Ahold-down 'roller adjacent said- tail
sprocket adapted4 to guideV said chainto a posi
tion on the bottom of said trough, said roller be
ing tapered to permit bent‘flights to pass there
25
under.
3‘. In
.
«
'
a. conveyer, the combination with
a
trough, of a continuous-` chain, flights carried by
saidV chain, head *and* ta-il sprockets for said
chain', a hold-down roller adjacent said tail
sprocket adapted.- to- guide said chain to a 3.9.
positionron the bottom> of` said trough, said
roller comprising a cylindrical Vcenter `por
tion, and.T end portions forming conical sections
of reduced diameter progressively outward to eachl
35;
end to permit bent flightsto pass thereunder.
4‘. In a` conveyer, the combination. with a
trough, of a continuous chain adapted to. travel
substantially along the central longitudinal axis
of the trough, flights attached at their centers
to said». chain by rivets~ having upwardly' project
ing heads, head and ltail sprockets for said chain,
a hold-down roller adjacent said tail-sprocket
adapted- to-'holdë' said* chainagainst the trough
bottom, said roller having circumferential
grooves adapted tof'permit free passage of said 45
rivet heads' and'having outwardly tapering coni
cal portions adapted. to» permit the free passage
ofl bentvv flights - thereunder. '
5. A tail section for a conveyer comprising a`
framev having sidewalls, a shaft extending be 50
tweenV said walls, a- central sprocket on said
shaft, ahold-down roller extending between said
side.' walls «forward of said shaft, said roller hav
ing outwardly tapered conical portions and a» pair
of- centrally positioned circumferentiall grooves.
6. A' tail section for a conveyerV comprising a
frame having' sidewalls, a shaft extending be
tween said walls, a central sprocket on said shaft,
a. hold-down roller extending betweensaid side
walls forward of said shaft', said roller having 60.
outwardly tapered conical portions.v
7. A hold-down roller fo-r a chain conveyer
comprising a body having a central cylindrical
portion, conical end portions of decreasing di
ameter from the center thereof, toward the ends, 65
said- body being provided with circumferential
grooves between the central cylindrical portion
and the conical end portions.
8. A hold-down roller for a chain conveyer
comprising a body having a central cylindrical 70
portion, and conical end portions, said body being
provided with circumferential grooves between
said central portion and said end portions.
9.. In a conveyer, the combination with a
trough having side walls, of a continuous chain 75
2,121,628
adapted to travel along the center of said trough,
flights carried by said chain having arms extend
ing laterally thereof, centrally positioned head
and tail sprockets for said chain, and a hold
down roller extending between said side walls and
positioned adjacent said tail sprocket having a
central roller portion adapted to ride on said
chain and guide it to a position on the bottom
of said trough, said roller being constructed to
10 permit vertically bent arms of said flights to pass
freely thereunder by having its ends beyond said
central portion of reduced diameter.
10. In a conveyer. the combination with a
trough, of. draft means adapted to travel sub
stantially along the central longitudinal axis of
the trough, a tail sprocket for said draft means
positioned centrally of said trough, a hold-down
roller adjacent said tail sprocket adapted to hold
said draft means against the trough bottom,
20 flights attached to said draft means and having
3
wings extending laterally to each side thereof,
said hold-down roller having outwardly tapering
portions adapted to permit free passage of up
wardly bent flights thereunder.
11. In a conveyer, the combination with a
trough, of draft means adapted to travel sub
stantially along the central longitudinal axis of
the trough, a tail sprocket for said draft means
positioned centrally of said trough, a hold-down
roller adjacent said tail sprocket adapted to» hold l U
said draft means against the trough bottom,
flights attached to said draft means and having
Wings extending laterally to each side thereof,
said hold-down roller having a central substan
tially cylindrical portion adapted to ride on said
draft means and having portions of reduced di
ameter extending over the paths of said wings to
permit bent flights to pass freely thereunder.
WILLIAM B. FLEMNG.
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