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Патент USA US2132718

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Oct. 11, 1938.
E. R. BERGMANN
2,132,718 ’
FEEDING MECHANISM FOR- SHAKER CONVEYERS
Original Filed Feb. 6, 1936
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Oct. 11, 1938.
E. R. BERGMANN
'
2,132,713
FEEDING MECHANISM FOR SHAKER CONVEYERS
Original Filed Feb. 6, 1956
'
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00:. 11, 1938.
E, R BERGMANN "
- '
2,132,718
FEEDING, MECHANISM FOR SHAKER CONVEYERS
Original Filed Feb. 6, 1936
3 Sheets-Sheet 3
2,132,713
Patented Oct. 11,1938
'-‘ (‘UNITED ‘STATES rarsur orFicE ~~
' 2,132,718
FEEDING MECHANISM FOR SHAKER
C‘ONVEYERS
'
Ernst R. Bergmann, Chicago, 111., ‘assignor to
Goodman Manufacturing Company, Chicago,
111., a corporation of Illinois
Application February 6, 1936,‘ Serial No. 62,582
Renewed April 15, 1937
27 Claims. (Cl. 198—220)
This invention relates to improvements in feed
ing mechanisms for shaker conveyers of the type
utilized for gathering and transporting loose ma
terial such as coal, rock or the like.
_
-
5
vMore speci?cally my'invention relates to im
provements in the construction of feeding mech
anisms attached to the loading end of recipro
cating conveyers and has as its principal objects
to provide a novel arrangement of feeding mech
10, anism of a simpli?ed construction, so arranged
that the extension- or retraction of an extensible
trough section having a gathering shovel atv the
forward end thereof may be effected by the re
ciprocating action of the conveyer.
l5 .
The device of my invention operates on prin
ciples similar to those disclosed in an application,
Serial No. 36,496, ?led by Louis F. Jones, August
16, 1935, which is now Patent No. 2,068,953,but
differs therefrom in the arrangement of the'
20 mechanism and operation of the gripping devices
for extending or retracting the extensible trough
section.
»
‘
My invention may best be understood with ref
erence to the accompanying drawings wherein:
Figure l is a side elevation of a feeding mecha
nism constructed in accordance with my inven
tion;
‘
Figure 2 is a fragmentary plan view of the de
viceshown in Figure l, with certain parts broken
30 away and shown in horizontal section to more
“ clearly illustrate certain details of my invention;
Figure 3 is a transverse sectional view taken
substantially along lines 3-3 of Figure 2;
O: CA
Figure 4 is a fragmentary detail side eleva
tional view of the feeding mechanism with the
parts positioned differently. than in Figure 1, and
with certain parts broken away and shown in
section in order to illustrate certain details of
the invention not shown in Figure 1;
‘ Figure 5 is an enlarged fragmentary transverse
sectional view taken through the rocking shoe
with the parts positioned as shown in Figure ll;
‘Figure 6 is an enlarged fragmentary transverse
sectional view taken through the gripping de
as. Oi ,
vices;
Figure '1 is an enlarged fragmentary sectional
view illustrating the details of the means for ad
justing the spacing of the gripping blocks; and
Figures 8, 9, 10, 11 and 12 are diagrammatic
0. views of the feeding mechanism showingcertain
operating positions thereof.
In the drawings the main elements of the 'em- 7
bodiment of my invention illustrated consist of a
reciprocating trough section- [0 connected to the
56 forward end of a reciprocating shaker conveyer
An
panextensible
line (not trough
shown)section
of a or
usual
pick-up
construction.
member
ill having a ?ared gathering shovel I2 at the
forward end thereof extends from said'recipro
eating trough section and is adapted to be nested 6;};
therein for extension or retraction with respect
thereto.
'.
'
The extensible trough section II is provided
with a pair of laterally extending bearing plates
l3 secured to and extending outwardly from the 10,
upper ?anges thereof. Said bearing plates are
adapted to be engaged by a feeding mechanism,
generally indicated by referencecharacter M, for
extending or retracting said pick-up ‘member
with respect to said reciprocating trough section. 15v
Said bearing plates are slidably mounted be
tween a pair of spaced rollers [5,15 mounted on
opposite side walls l6,‘ [6 of a support bracket 11
on suitable parallel-spaced studs l8, l8. Said
support bracket is secured to the forward end 29’
of the reciprocating troughsection I0 and ex
tends ‘along the bottom thereof and upwardly
along opposite sides thereof, and saidrollers are
adapted to form an anti-friction supporting and
guiding means for said bearing plates and pre- 25
vent lateral‘ and‘vertical displacement of said
pick-up member with respect to said reciprocat
ing trough section (see Figures 1 and 2).
The forward end of said reciprocating trough
section is supported on a rocking shoe l9. Said 30
rocking shoe. is pivotally mounted, forwardly of "
the trough section H) on a pair of brackets 20,
20 disposed above said trough section and which
as herein shown are formed integrally with and.
extend forwardly from the upper ends of the ver- 35
tical side walls of the support member I1.‘ Said
rocking shoe, as herein shown, includes an arou
ate ground engaging-plate ‘2| having suitable
lugs or cleats on the under surface thereof. Suit
able spaced-apart legs consisting of outer up- 40
standing members 22, 22 and corresponding in
wardly spaced inner members 23, 23 are herein
shown as being welded to the upper surface of
said plate and extend upwardly therefrom ad
jacent opposite sides thereof. Said members are 45
connected together at their upper ends by means
of a suitable tie piece. The forward end of each
of
said
theupstanding
brackets 20members
extends and
between
is pivotally
each pair
conof
nected thereto adjacent the upper‘ ends thereof 50
by means ofa pivotal pin 24, as is best shown in
Figures 3 and 5.
.
.
.
Referring now in particular to the novel ar
rangement of the feeding mechanism l4 and the
operating means for said feeding mechanism 55,
2
i
2,132,718
which is actuated by the rocking shoe l9, said
feeding mechanism as herein shown consists of
45 extending outwardly and upwardly from said
two sets of friction blocks 25 and 26, each of
Means are provided for simultaneously rock
ing the carrier members 2?, 21 about the axes of
pivotal connection of said lower friction blocks
thereto and bringing the friction blocks 25 and
which sets is mounted in a carrier member 21 of
a substantially C-shaped formation (see Figure
6). One carrier member is provided at each side
of the extensible trough H and is supported
thereby in advance of the reciprocating trough
section I 0, and since the construction of each
10 carrier member and the means for operating and
controlling operation thereof is similar, a descrip
tion of one will suf?ce for both.
The carrier member 2'! is so arranged that its
open end extends inwardly along the bearing
16 plate 13 so the friction'blocks 25 and 26 may en
gage the upper and lower surfaces of said bearing
plate, respectively.
The upper friction block 25 is mounted in said
carrier member on a bolt 29 which has a retain
20 ing roller 30 mounted on the inner end thereof
adapted to engage the inner side of’ the bearing
plate l3.
'
I
The lower friction block 26 is pivotally mount
carriers.
'
25 into and out of engagement with the bearing
plates l3, l3, which as herein shown comprise
actuating links 41, 41 connected between said
carrier members and the rocking shoe l9. The
forwardends of said links are bifurcated, and
as herein shown are pivotally connected to the
bolts 29, 29 on opposite sides of the grip blocks
25, 25. The rearward ends of said links are piv
otally connected to opposite legs of said rocking
‘shoe so as to move in substantially parallel rela
tion with’ respect to said trough upon rocking
movement of said. shoe. Support brackets 48, 48
mounted for slidable adjustable movement along
the inner members 23, 23 of said legs form a piv
otal connecting means for the rearward vendsrof
said links, and said links are pivotally secured
between a forked portion thereof by means of
ed on a suitable eccentric member 3! eccentrical
pivotal pins 49, 49.
ly of the center thereof. Said eccentric member
is herein shown as extending through both sides
of said carrier member and having a nut thread
ed on its inner end (see Figure 6). The arrange
ment'of said eccentric member is such that rota
Each of the support brackets 48 engages the
outer sides of the inner member 23 and is held in
slidable engagement therewith by means of‘ a’
bracket 56 disposed between the members 22 and
23 and secured to said support bracket by means
30 tion thereof in one direction or another will vary
the spacing of the friction block 26 with respect
to the friction block 25 to provide an adjustment
to take care of wear of said blocks.
'
‘
of‘ suitable cap screws in a usual manner.
The 30
bracket Sil'has a bifurcated portion 5| disposed
between the members 22, 22 which has a link 53
pivotally connected thereto on a pivotal pin 54;
The lower end of said last-named link is pivotally
The eccentric member 3| is herein shown as
35 being turned or held in position by means of a
machine screw 32 threaded within a lug 33
formed integral with said carrier member, as
shown in Figure '7. The inner end of said screw
is adapted to engage one wall of a slot 35 formed
rearward pivotal axes of the links . 41, 41 by
40 in said eccentric member, which slot is in the
means of suitable hand cranks 51, 51 keyed on the
connected to a crank arm 55 which is keyed on a
shaft 56 mounted in said rocking shoe and ex
tending transversely thereof. Said shaft is piv-'
otally moved for adjusting the'position of the
form of a segment of a circle. A lock nut 36 is
threaded on said screw to lock it from movement
outer ends thereof.
when desired.
An adjusting lever 3'! herein shown as being
shown in Figures 1, 3 and 5, the links 41, 41 are
disposed in a lowered operative position. Said
45 pivotally mounted on the outer end of the ec
centric member 3! is provided to adjust the car
rier member 2‘! to position the blocks 25 and 26
to extend or retract said trough section as de
sired and form a reaction member about which
50 said blocks may pivot. As herein shown, said
adjusting lever has forward and rearward ex
means of suitable spring pressed plungers 59, 59
mounted in said hand cranks and engaging
heads 60, 69 of the pins 54, 54 which heads are
slidable in slots 6|, 6| formed along the outer
members 22, 22.
’
tensions having suitable foot treadles thereon, so
said lever may be conveniently operated by the
foot. An arm 39 extends downwardly from the
55 point of connection'of said adjusting lever to said
carrier member and is pivotally mounted on an
outer end of a shaft 40. Said shaft extends
transversely across said extensible trough section
and affords a means whereby said carrier member
60 may be adjusted from one side or the other of
the device and also forms a reaction member for
said adjusting levers. A roller 43 is_ mounted on
said shaft and slidably engages the under side of
_ said extensible trough section to permit sliding
65 movement of said shaft along said extension
trough as said adjusting levers are pivoted about
the axis of said shaft.
Said carrier members are held in the desired
position of adjustment with respect to said ex
70 tensible trough section by means of suitable yield
able members 44, 44, herein shown as being ten
sion springs. Said tension springs also serve as
a means to engage said grip blocks with said
bearing plates and are connected between the
outer ends of the shaft 40 and suitable lugs 45,
'
When said hand cranks are positioned as
hand cranks are locked in such a position by
When said hand cranks are positioned as shown 60
in Figure 4, the rearward pivotal axes of the links
él'i, ill’ are coaxial with the axis of rocking move
ment of said rocking shoe, as is best shown in
Figures 4 and 5.
When in such a position, there
will be no appreciable movement of said links
during rocking movement of said‘shoe, and the
rip blocks 25 and 26 will be engaged with the
bearing plates i3, I3 by means of the springs
44, Mi.
The forward portions of said links are
adapted to engage lugs 62, 62 on the carrier mem 60
bers 21, 21 when the rearward ends of said links
are
the last~named position to positively lock
said grip blocks in engagement with said bearing
plates.
Suitable means are provided to limit rocking
movement of the rocking shoe [9 which as herein
shown comprises suitable spaced-apart stop
members 63, 53 extending upwardly from oppo
site sides of said shoe and having forward and 70
rearward engaging faces. Said forward faces
are adapted to engage stops 64, 64 on the forward
ends of spaced-apart arms 65, 65 extending for
wardly from the bracket member, I‘! and said
rearward faces are adapted to engage stops 66, 66
751
means:
on‘- the rearward ends; of:v said-‘Qarms adjacent said‘:
bracket.’
,
.
,
v"Referring now:- to‘ Figures 8'» to‘ 12“; inclusive,
which‘ illustrate) the: operation .of theapparatus;
, and-"to-Figu'res 8 and9>in= particular; which‘show:
the: ‘relative positions- of; the ~ parts of the feeding;
mechanism at the‘beginning and end of-‘the-‘re-v
tum stroke of» the conveyer'when the extensible:
trough‘ III’- is resting on ‘the reciprocating trough
Ill and is out/“of ‘engagements with‘ the ground, it
maybeseen' that. the frictional'resistance between
said‘ trough's'i‘s‘such" that there is a» tendency for
said!‘ extensible trough'ltem'ove withsaid recipro
cating trough. When the friction grip-blocks 25'
spacebetween thelines-CeeD'irr Figure 12; ’
While- I. have herein showntand- describedv one 5
form in which myinvention- mayrbe embodied, it
will; be understood? that the construction or are
rangementr of’ the various parts: may be altered-v
or: changed without departingfrom thespirit and‘
scope‘thereof. Furthermore, I'do not wish to‘ be 10
construed as. limiting myself; to. the particular
form, shown, excepting as it maybe limited- by
the appended‘ claims.
'
'
V
I' claim‘ as- my- invention :~
: and-281 ‘are positioned‘ as shown, in ‘these ?gures,
the relative force; exerted’ by- the links 41', 41
ag‘ai'nst- thexcarrier members- 2'! , 2-1‘- during- the
return-v strokeof the conveyeris in a forward di
rection;
conveyer: and'said extensible troughsectiom will;
accordingly, be retracted within saidireciprocate.
ing trough.‘ section a distance,- indicated by'the
Thiswill’ engage“ the ' grip blocks; 25' and
26*with' the’ bearing; plates l3, 13 during‘ this
period‘ in an‘ obvious‘ manner. ‘ Upon the forward
stroke; of" the conveyer - the‘ relative force exerted:
by the links 41-, 4''! against the carrier them-Mrs‘
21, 21 will be in- a rearward direction; 'This will
: disengage the grip blocks 25‘ and '26 'from the
bearing pl'ates’l?, I3; Thus; during" the forward:
stroke of‘ the conveyor the frictional resistance
of ‘said extensible trough secti'on'_ against said re
ci‘procating' trough'section will bejsuch that said
1,. In a feeding device for shaker conveyers, a" 15
reciprocatingtrough section‘, a rocking. shoedis
posed in advance of‘ said reciprocating- trough:
section for supporting, the, forward end; of- said
trough section‘ above-the ground, an- extensible
trough section adapted: to- be extended‘_ from or» 2O,
nested within said. reciprocating trough» section,
a carrier member disposed in advance of-said:
rocking shoe and' adapted to be» supported‘ by- said,
extensible trough section including‘ a» pair of fric
tion grip.v blocks pivotally mounted therein and:
adapted to engage said extensible‘ trough sec
tion above and below'av-portion thereof, and a
connection from said rocking shoe to-said carrier
troughswill- move together in. a forward‘ direction
a ‘distance‘equal to the stroke of‘ the conveyer,
andduri‘ng the return‘ stroke of. the conveyer
said grip blockswill' retract said‘ extensible trough
aldi'stancejequal to the, length of’ travel of the
; li'nkd’l?'This will‘; result'in. advancing the for
member for bringing said grip blocks into and
out of- engagement with" said- extensible trough’
section.
'
-
2. A feeding device in accordance with claim» ‘
1-, wherein the carrier‘ member» is pi-voially con
nected to an adjusting lever which is adapted to
adjust the angular position thereof and position 35;
said blocks to extend or retract said extensible
ward end'of said‘ extensibletrough section a dis
tance substantially equal. to the di?‘erence be-v
tween the stroke of‘ the, conveyer and the dis
tance the links 41', 41 travel, which distance is
40> indicated by the space between the lines A—B in
trough section and wherein‘ said adjusting lever‘
is pivoted for movement about an axis disposed
beneath and slidablyv movable with respect to
said.‘ extensible trough.
'
_'
3‘. A feeding: device in accordance with claim»
1', wherein the» carrier member is pivotally con? ‘
When the. forward end‘ of ‘said extensible trough
is resting on the ground‘ as in Figure 10, and the
grip blocksare disengaged from said trough sec
nected to an adjusting-k lever which is- adapted-"l
to. adjust the angular position1 thereof and posi
tion said blocks to extend or retract said ex
tions, the frictional resistance of ‘said extensible
trough against ‘the ground. is 'su?icient to hold
said‘ extensible trough section. from movement
with respect to said reciprocating trough. l'I'hus,
tensible trough section, and wherein yieldable
means are interposed between said carrier mem
her and adjusting lever to- hold" said parts in- the
the direction of force exerted‘ by the links 41,41 is,
, reversed from that. shown in Figures, 8 and, 9 and
the grip blocks25 andZB will grip the bearing
plates I3, 13 upon the forward stroke of the
conveyer and be disengaged therefrom upon the
return stroke of the convey/fer. The action of
65 feeding is,_ accordingly, automatically reversed
desired relationshipw-ith respect to each other.
4. A feeding device in accordance with claim
1, wherein the carrier member is pi-votallyv con
nected to an adjusting lever‘ which is adapted to
adjust the angular: position thereof and position
said blocks to extend or“ retract said extensible
trough sections,'where-in yieldable means are in
from the backward to the forwardstroke of the terposed between said carrier member and: ad
conveyer when said extensible trough section II justing lever to hold said parts in the desired
engages, the ground and accumulates su?i'cient, relationship with respect to each other, and‘
friction: to. hold‘. it from movement with respect wherein said adjusting lever is pivoted for move
60 to saidjreciprocating trough section.
,
Figures. 11 and 12v show the grip blocks posi
tionedfor retracting. the extensible ‘trough section
within the reciprocating troughsection when said
extensible. trough section is, disposed above the
, ground.
Whenin such a position, the grip blocks
25 and 26 are disengaged from the bearing plates.
[3, [3 upon the return stroke of the conveyer and
engaged with said bearing plates ‘upon the for
ward stroke of the conveyer. l’I'hus, said extensi
, ble trough section will move rearwardly a distance
equal to the length of stroke of said reciprocat
ing trough section upon the return stroke of the
conveyer, and will be moved forwardly by said
grip blocks a distance equal to the length of travel
of the links 41-, 41 upon the forward stroke of the
ment about an axis disposed beneath and slidably (i0.
movable with respect to said- extensible trough.
5. A feeding device in accordance with claim
1‘, wherein the connection- between said rocking
shoe and carrier member includes a link and
wherein means are provided for‘ locking said grip. 65
blocks in engagement with said trough section
which comprise means for elevating the rear
ward end of said link.
~
6. In a feeding device for shaker conveyers, a
reciprocating trough section, a rocking shoe for 70.
supporting the forward end of said trough sec
tion above the ground, an extensible trough sec-,
tion adapted to be extended from or nested with-.
in said reciprocating trough section, and means
connected‘ to said rocking shoe and actuated by 78
4-,
2,132,718
rocking-movement thereof for extending or .re-.
tracting said extensible trough section with re
spect ‘‘to said reciprocating trough section com
prising a'carrier member'having 'a pair of friction
grip blocks pivotally mounted therein adapted to
engagesaid extensible trough section above and
connecting said rocking shoe to said carrier mem
ber for rocking said carrier member and engag
ing said grip blocks with said extensible trough
section, means for positioning said blocksto ex
tend or retract said extensible trough section
comprising an adjusting lever pivotally connected
below a portion thereof, a link connecting said
to said carrier member for movement about an
rocking shoe to said carrier member for rocking
axis coaxial with the axis of pivotal connection
said carrier member and engaging said grip
of said lower grip block thereto, and a tension
spring interposed between the upper end of said 10
carrier member and said adjusting lever for hold
ing said carrier member and adjusting lever in
blocks with said extensible trough section, and
means for adjusting the position of said carrier
member to position said‘ blocks to extend or
retract said extensible trough section.
7. In a feeding device. for shaker conveyers,'a
reciprocating trough section, a rocking shoe for
supporting the forward end of said trough sec—
tion above the ground, an-extensible trough sec
tion adapted to be extended from or nested with
in said reciprocating trough section, and means
20 connected to said rocking shoe and actuated by
rocking movement thereof for extending or re
tracting said extensibletrough section with re
spect to said reciprocating trough section com
prising a carrier member having a pair of friction
25 grip blocks pivotally mounted therein adapted to
engage said extensible trough section above and
below a_ portion thereof, a link connecting said
rocking shoe to said carrier member for rocking
said carrier member and engaging said grip
blocks with said extensible trough section, and
means for adjusting the position of said carrier
.member to position said blocks to extend or
retract said extensible trough section comprising
an adjusting lever pivotally connected to said
35 carrier member for movement about an axis
coaxial with the axis of pivotal connection of
said lower grip block thereto.
8. In a feeding device for shaker conveyers, a
reciprocating trough section, a rocking shoe for
40 supporting the forward end of said trough sec
tion above the ground, an extensible trough sec
tion adapted to be extended from or nested with
in said reciprocating trough section, and means
connected to said rocking shoe and actuated by
45 rocking movement thereof for extending or re
tracting said extensible trough section with re-'
spect to said reciprocating trough section. com
prising a carrier member having a pair of fric
tion grip blocks pivotally mounted therein adapt
50 ed to engage said extensible trough section above
and below a portion thereof, ,a link connecting
said rocking shoe to said carrier member for
rocking said carrier member and engaging said
grip blocks with said extensible trough section,
and means for adjusting the position of said car
adjusted relationship with respect to said exten
sible trough section.
10. In a feeding device for shaker conveyers, a
reciprocating trough section, a rocking shoe for
supporting the forward end of said trough sec
tion above the ground, an extensible trough sec
tion adapted to be extended from or nested with
in said reciprocating trough section, and means 20
connected to said rocking shoe and actuated by
rocking movement thereof for extending or're
tracting~ said extensible trough section with re
spect to said reciprocating trough section com
prising a carrier member having a pair of friction
grip blocks pivotally mounted therein and adapt
ed to engage said extensible trough section above
and below a portion. thereof, a link connecting
said rocking shoe to said carrier member for
rocking said carrier member and engaging said 30
grip blocks with said extensible trough section,
and means for positioning said blocks to extend
or retract said extensible trough section com
prising an adjusting lever pivotally connected to
said carrier member and having pivotaland slid 35
able engagement with the under surface of said
extensible trough section, and a tension spring
interposed between said carrier member and ad
justing lever to hold said parts in the desired re-,
lationship with respect toeach other.
11. In a feeding device for shaker conveyers, a
reciprocating trough section, a rocking shoe for
supporting the forward end of said trough sec
tion above the ground, an extensible trough sec
tion adapted to be extended from or retracted
with respect to said reciprocating trough section,
and means connected to said rocking shoe and
actuated by rocking movement thereof for ex
tending or retracting said extensible trough sec
tion with respect to said reciprocating trough sec
tion comprising a carrier member disposed on 50
each side of said extensible trough section in ad
vance of said rocking shoe, each of said car
rier members having a pair of friction grip blocks
pivotally mounted therein and adapted to en
gage the upper and lower surfaces of bearing '
or retract said extensible trough section compris- ‘ plates extending laterally from said extensible
rier member to position said blocks, to extend
ing an adjusting lever pivotally connected to said
carrier member and having pivotal and slidable
engagement with the under surface of said ex
tensible trough section.
9. In a feeding device for shaker conveyers, a
reciprocating troughsection, a rocking shoe for
supporting the forward end of said trough sec
, tion above the ground, an extensible trough sec
tion adapted to be extended from'or nested with
in said reciprocating trough section, and means
connected to said rocking shoe and actuated by
rocking movement thereof for extending or re
; tracting said extensible trough section with re
spect to said reciprocating trough section com—
prising a carrier member having a pair of fric
tion grip blocks pivotally mounted therein and
adapted to engage said extensible trough sec
tion above and below a portion thereof, a link
trough section, connecting links for pivotally con
necting the upper portion of said carrier mem
bers with said rocking shoe whereby said rock
ing shoe may rock said carrier members and
bring said grip blocks into and out of engagea
ment with said bearing plates, an adjusting lever
pivotally connected to each of said carrier mem
bers for positioning said blocks to extend or re
tract said extensible trough section, and a con
nection between said adjusting levers to permit
simultaneous operation thereof,
12. In a feeding device for shaker conveyers, a
reciprocating trough section, a rocking shoe for
supporting the forward end of said trough section
above the ground, an extensible trough section
adapted to be extended from or retracted with
respect to said reciprocating trough section, and
means connected to said rocking shoe and actue
2,132,718
ated byirocking movement thereof for, extending sible trough and affording a slidable pivotal re
~or Iretracting said “ extensible, trough section with
'--respect'"t'o 'said reciprocating trough section ‘com
i'pri'sing'a carrier;member-disposed:on each side of
r'said'extensibleitrough section in "advance of said
action means for said adjusting levers, yieldable
means interpose'dbetween the upper ends of said
carrier members vand said adjusting levers for
holdingsaid carrierv members in adjusted‘ relation :
‘rocking shoeyea‘ch- of said'carrier members having with respect to said extensible trough sectiomand
-a pair of friction grip‘ blocks ‘pivotally mounted ' means for locking‘saidigrip blocks inengagement
therein-and adapted toiengage th'e'iupper and with said bearing .plates comprising means for
elevating the rearward ends ofrsaid links to a
lowerfsurfacesof bearing plates extending later
position coaxial with the axis. of rocking move 1-10
10 iallyi'romi'sai'd ‘extensible trough section, connect
I
ing ‘Ilinks ifor {pivotally connecting ‘said carrier ment of said shoe.
15. Ina feeding device for shaker-conveyors, a‘
"member's withlisai'd rocking shoe whereby said
rocking shoe may 'riock said‘ carrier members and reciprocating trough section, a rocking .ash'oe
lb‘riing Ssaid grip blocks into and/out of engagement adapted to supportthe forward end of said trough
section above the ground, an extensible trough :15
15 ‘withisai-‘dbeariingliplates, an -'a'djusting1ever pivot
ally donn'e‘ctedi to eacnfof vsaid carrier ‘ members
for positioning said‘bloc‘ks to extend or retract
‘said? extensible "trough =1se'ction,= and‘ a connection
‘ "between _'saidi'adjusting IeVers-topermit simul
TtaneousIop'eratiOn thereof including --means en
'i‘gag'i'nlg‘ the‘ under'surfac'elof said extensible trough
‘land'a?or‘di'ng'i a-‘v‘sli‘dable ‘pivotal reaction means
‘for said adjusting levers»
>
‘
- 113. In ‘a-feediing device'ifor shaker conveyors, ‘a
25 "reciprocating -’~trou'gh *section, a "rocking ‘shoe for
‘supporting the» forward end! of said'trough‘ section
"above‘v-the ig-roundyan extensibl'etrough section
seamed-so 1be'7 extended ‘from or vretracted vwith
respect1 to’said reciprocating trough -section,-a
30 carrier-memberdisposed on each side'of said ex~
'tensible"trough-section» in advance of said rocking
"shoe; each'of- said'carrier members having’a pair
section adapted ‘to ,be extended from or retracted
‘with respectto said reciprocatingitrough section,
and means actuatedv by. rocking movement :of said
‘rocking shoe for extending or .retractingsaid ex
tensible'trough section with respectto said re
ciprocating trough section comprising a:carrier
member having apair of, friction gripvblocksipiv
otally mounted ythereiniadapted 'toiengage ‘said
‘extensible trough section‘ above andlbelow apor
to
‘tion
said
thereof,
carrier
a link
member
connecting
for rocking
said rocking
said ‘carrier
shoe
member and bringing said gripiblocksintovand out of engagement‘with saidatrough section, and a
means for’locking said grip blocks in‘ engagement
with saidextensible trough section comprising an :30
abutment on said carrier member-adapted toibe
engaged by said link and ‘means on said- shoelfor
the rearward end of said: link. ‘=- 1 ~ 7
'of' friction ‘grip-blocks pivotal-1y mounted‘ therein elevating
In a feedingdevice for shaker conveyers,
“adapted-to engagev the upper and lower surfaces a 176.
reciprocating Itrough section, .uarocking shoe .;
of 'bearing'plates’jextending “laterally ‘from said adapted
to support the forward end'of sai'ditrough
‘extensible trough-section;connecting links for
above'the ground-an extensiblettrough
‘pivotaily connecting saidcarrier members with section
section adapted to be extended from: or. retracted
'said-‘rockingshoe whereby said-rockingshoe may
rock said-carrier members and bring said grip
with ‘respect to said reciprocating trough sec
'tion,
and means actuated .by rocking-movement v40
40 blocks into-‘and out of engagement‘with-said bear
‘of said. rocking shoe’ for extending, orrretractin'g
' ing plates, an adjustable fleveripivotally connect
said extensible trough section with ‘respect to said
'ed' to each of said carrier'm‘embers for positioning reciprocating
trough section. comprising-a carrier
said-blocks‘ toexténd or retract’ saidrextensible 7 member having a'ipair of frictiong'rip blocksipiv
mounted thereinadapted to engage-saidex
ing levers'to permitsimultaneous operation there ‘otally
tensible trough section above and belowtaipor
trough section, a connection between said adjust
45
of including means engaging the under surface of
vsaid"extensible trough‘ 'and' affording a slida'bl'e
l'pivotal'reaction' means; for said‘ adjusting‘ levers,
andyielda-ble'means ‘connected between said car
rier members " and _' adjusting levers " for‘ holding
said ‘carrier’members‘in adjusted relation with
respect to-eachjothér.
'
~
V
'
_
_14. "In 'a feeding ‘device-“for shaker conveyers,~a
"reciprocatingPtroughseotion, a rockingshoe for
‘supporting the forward end‘ or’ said trough sec
tioriabovetheL ground, an extensible trough sec
tion'-adapted'~*to;lbe extended from or retracted
withwrespec't tolsaid reciprocating trough section,
a’carrier-member disposed on each side of said
tion thereo?'a link- connecting said rocking shoe '
to ‘said carrier memberffor rockingxsaid carrier
member and‘bringing said grip-blocksv intoaand
out of engagement (with, saidtrough section, and
means for‘locking said-grip gblocksiincengage
$50 7
‘ ment with said extensible trough section compris
ing ‘means on saidvrockingshoe forvelevating' the
rearward end of said link so that; its rearward
pivotal axis is coaxialwith. the .pivotal axis ‘of
said rocking shoe.
1
1
r
x
"
1'7. In a feeding device for shaker» conveyers,
a reciprocating trough section, a‘ rocking ‘shoe
adapted to support the forward end-of said trough
section'above the ground,_lan extensible trough 460
section
adapted tobeiextended from. or'retraoted
each'illofsaid'il'carrier members having a'pair of
friction lgrip fblocks ~pivotally mounted’ therein with respect to-said reciprocating,‘troughssec
adaptedv to engage‘ the upper and lower surfaces tion, and means actuated by rocking-‘movement
of 'bearinglyplates ‘extending laterally from‘ said of said rocking shoe for extending or' retracting
‘extensible/trough section, connecting links for ' said extensible trough section with respect to said .65
pivotally connecting said- carrier members with reciprocating trough‘section comprising a care
said-rocking shoe-‘whereby saidrocking shoe may rier'member ‘having a pair of’ friction gripblocks
rock said carrier members ‘and bring said grip pivotally vmounted therein for-engagement with
said extensible troughusection above-and belowsa
blocks'into and'out of, engagement'with said bear
portion thereof, a link connecting saidrocking
ing
plates,
an‘
adjusting
'lever
pivotally‘
connected
70
to each of said. carrierbmembers at the point of shoe to said carrier member .for‘rockingvsaid
.c'onnection'of saidrlower ‘grip blocks thereto, and carrier member and bringing said grip-blocks
60
extensible trough inTadvance' of said'rocking shoe,
a connection betweengsaid adjusting levers to
permitxsimultaneous operation thereof including
M means engaging the under surface of said exten
into and out of engagement‘withl said. trough sec
tion, and means for positioning said carrier :mem
her to extend‘or vretract'said extensible trough 75
6
2,132,718
section comprising an adjusting lever pivotally
connected to said carrier member and a com
pression spring interposed between the upper
end of said carrier member and said adjusting
lever for holding said parts in adjusted rela
tionship with respect to each other, and means
on said rocking shoe for locking said grip blocks
in engagement with said extensible trough com
prising a means for elevating said link so that its
10 pivotal axis is coaxial with the pivotal axis of said‘
rocking shoe.
18. In a feeding device for shaker conveyers,
a reciprocating trough section, a bracket ex
tending forwardly therefrom above the upper end
15 thereof, a rocking shoe pivotally connected to
said bracket and forming a means for support
ing the forward end of said trough section above
the ground, an extensible trough section tele
scopically extensible from said reciprocating
20 trough section, and means actuated by rocking
movement of said rocking shoe for extending or
retracting said extensible trough section with re-'
spect to said reciprocating trough section com
bers having a pair of friction grip blocks piv
otally mounted therein adapted to engage bear
ing plates extending laterally from said exten
sible trough section, 'a pair of parallel-spaced
aligned links connecting said carrier members
with said rocking shoe, a connection between
said carrier members including a pair of 'ad
justing levers pivotally connected to the lower
ends of said carrier members and a member
connecting said adjusting levers together and 10
reacting against the under surface of said ex
tensible trough section, and yieldablev means in
terposed between the upper ends of said carrier
members and lower portion of said adjusting
levers for holding said levers and carrier mem
bers in adjusted relation with respect to each
other.
21. In a feeding device for shakerconveyers,
a reciprocating trough section, means forsup
porting the forward end of said reciprocating
trough section above the ground, an extensible
trough section adapted to be extended from or
nested within said reciprocating trough section,
prising a pair of carrier members disposed for
V25 wardly of said rocking shoe,’ said carrier mem
means for extending or retracting said extensible
trough section with respect to said reciprocating
trough section including a carrier member hav
ing a pair of friction grip blocks pivotally mount
ed therein adapt-ed to engage said extensible
trough section above and below a portion there
30 ing said rocking shoe with'said carrier, members
of and a connection between said carrier mem
bers having friction grip blocks pivotally mount
ed therein ‘adapted to engage bearing plates ex
tending laterally from opposite sides of said ex
tensible trough section, a pair of links connect
40
45
'50
5,5
60
65
30
for rocking said carrier members and bringing ber and reciprocating trough section and means
said grip blocks into and out of engagement with for adjustably positioning said’ carrier member
said trough section, and a connection between the a to position said blocks: to extend or retract said
lower ends of said carrier members including a
extensible trough section comprising an adjust
member slidably engaging the under portion of ing lever pivotally connected to said carrier,
said extensible trough section.
member for movement about an axis coaxial with
19. In a feeding device for shaker conveyers, ‘ the axis of pivotal connection of said lower grip
a reciprocating trough section, a bracket extend.
block thereto, and a member extending trans
ing forwardly therefrom above the upper end versely from said adjusting, lever, beneath said
thereof, a rocking shoe pivotally connected to said extensible trough sectionhand yieldable means
bracket and forming a means for supporting the for engaging said member with the underside 40
forward end of said trough section above the of said extensible trough section to hold said
ground, an extensible trough section telescopically. member in engagement with the underside of
extensible from said reciprocating trough sec
said extensible trough section.
tion, and means actuated by rocking movement of
22. In a feeding device for shaker conveyers,
said rocking shoe for extending or retracting said a reciprocating trough section, means for sup 45
extensible trough section with respect to said porting the forward end of said-reciprocating
reciprocating trough section comprising a pair trough section above the ground, an extensible
of carrier members disposed forwardly of said trough section adapted to be extended from or
rocking shoe, said carrier members having a pair nested within said reciprocating trough section,
of friction grip blocks pivotally mounted therein means for extending or retracting said extensible
adapted to engage bearing plates extending later-. trough section with respectto said reciprocating
ally from opposite sides of said extensible trough trough section including a carrier member hav
section, a pair of parallel-spaced aligned links ing a pair of friction grip blocks pivotally mount
connecting said carrier members with said rocking ed therein 'adaptedwto engage said extensible
shoe, a connection between said carrier mem
trough section above and below a portion thereof
bers including a pair of adjusting levers piv
and a- connection between said carrier member‘
otally connected to the lower ends thereof and
and reciprocating trough section, and means
a member connecting said adjusting levers to
for adjustably positioning said carrier member
gether and reacting against the under surface of to position said blocks to extend or retract said
said extensible trough section.
extensible trough section comprising an adjust
20. In a feeding device for shaker conveyers, ing lever pivotally connected to said carrier mem
a reciprocating trough section, a bracket extend
ber and having a member extendingtransv'ersely
ing forwardly therefrom above the upper end beneath said extensible trough section, and a
thereof, a rocking shoe pivotally connected to spring connected between said carrier member
said bracket and forming a means for support
ing the forward end of said trough section above
the ground, an extensible trough section tele
scopically extensible from said reciprocating
70 trough section, and means actuated by rocking
movement of said rocking shoe for extending
or retracting said extensible trough section with
respect to said reciprocating trough section com
prising a pair of carrier members disposed for
TI w-ardly of said rocking shoe, said'carrier mem
and a lower side of said adjusting lever for en
gaging said member'with the undersurface of '
said extensible trough section.
23. In a feeding device for shaker conveyers,
a reciprocating trough section, means for. sup 70
porting the forward end of said reciprocating
trough section above the ground, an extensible
trough section adapted to be extended from or
nested within said reciprocating trough section,
means for extending or retracting saidextensible 75
2,132,718
trough section with respect to- said reciprocating
10
15
20
25
7
of pivotal movement thereof to a point disposed
trough section including acarrier member hav
ing a pair of friction grip blocks pivotally mount
ed therein adapted to engage said extensible
trough section above and below a portion thereof,
means for positioning said carrier member to
beneath said conveyer trough, and a member
and means for extending or retracting said ex
to extend or retract said extensible trough sec
tensible trough section with respect to said re
ciprocating trough section including a carrier
levers to permit simultaneous operation thereof
connected between said depending portions and
extending beneath said trough sections to permit
said carrier members to be simultaneously ad
justed from one side of said feeding device.
position said blocks to extend or retract said‘ ~ 26. In a feeding device for shaker conveyors,
a reciprocating trough section having its forward
extensible trough section comprising an adjust
end supported for reciprocable movement above
ing lever pivotally connected to said carrier mem
ber for movement about an axis coaxial with the the ground, ‘an extensible trough section adapted 10
axis of pivotal connection of said lower grip to be extended from or retracted within said re
block- thereto, said carrier member extending ciprocating trough section, means connected to
above said upper grip block, and a tension spring said reciprocating trough section for extending
interposed between said upwardly extending 0r retracting said extensible trough section with
portion of said carrier member and the lower respect to said reciprocating trough section in 15
end of said adjusting lever beneath its axis of cluding a carrier member disposed on each side
pivotal connection to said carrier member, for of said extensible trough section in advance of
holding said carrier member and adjusting lever said reciprocating trough section, each of said
carrier members having a pair of friction grip
in adjusted relationship with respect to said ex
blocks pivotally mounted therein and adapted to 20
tensible trough section.
'
24. In a feeding device forshaker conveyers, engage the upper and lower surfaces of bearing
plates extending laterally from said extensible
a reciprocating trough section, means for sup
porting the forward end of said reciprocating trough section, connections from said carrier
trough section above the ground, an extensible members to said reciprocating trough section, an
trough section adapted to be extended from or adjusting lever pivotally connected to each of 25
nested within said reciprocating trough section, said carrier members for positioning said blocks
30 member having a pair of friction grip blocks piv
otally mounted therein adapted to engage said
extensible trough section above and below a por
tion thereof, means for positioning said carrier
member to position said blocks to extend or re~
35 tract said extensible trough section comprising
an adjusting lever pivotally connected to said
tion, and a connection between said adjusting
including a member connecting the lower ends 30
of said adjusting members together and yield
able means for slidably engaging said member
with the undersurface of said extensible trough
permitting said member to afford a slidable piv
35
otal reaction member for said adjusting levers.
27. In a feeding device for shaker conveyers, a
reciprocating trough section having its forward
extending from said adjusting lever transversely end supported for reciprocable movement above
beneath said extensible trough section adapted to the ground, an extensible trough section adapted
‘ to be extended from or retracted within said re 40
40 have pivotal slidable engagement with the under
surface of said extensible trough section, and a ciprocating trough section, means connected to
tension spring interposed between said carrier said reciprocating trough section for extending
member and adjusting lever to hold said parts in or retracting said extensible trough section with
the desired relationship with respect to each respect to said reciprocating trough section in
cluding a carrier member disposed on each side 45
45 other.
carrier member and having a rotatable member
25. In a feeding device for shaker conveyers, a
of said extensible trough section in advance of
reciprocating trough section having its forward
end supported for reciprocable movement above
the ground, an extensible trough section adapted
said reciprocating trough section, each of said
50 to be extended from or retracted within said re
ciprocating trough section, means connected to
said-reciprocating trough section and actuated
by reciprocable movement thereof for extending
or retracting said extensible trough section with
55 respect to said reciprocating trough section in
cluding a carrier member disposed on each side
of said extensible trough section in advance of
said reciprocating trough section, each of said
carrier members having a pair of friction grip
60 blocks pivotally mounted therein and adapted to
engage the upper and lower surfaces of bearing
plates extending laterally from said extensible
trough section, connections from said carrier
members to said reciprocating trough section, an
65 adjusting lever pivotally connected to each of said
carrier members for positioning said blocks to
extend or retract said extensible trough section
and having a portion depending from the axis
carrier members having a pair of friction grip
blocks pivotally mounted therein and adapted to
engage the upper and lower surfaces of bearing 50
plates extending laterally from said extensible
trough section, connections from said carrier
members to said reciprocating trough section, an
adjusting lever pivotally connected to each of
said carrier members for positioning said blocks
to extend or retract said extensible trough sec
tion, a member extending beneath said extensible
trough section and slidably engaging the under
surface thereof for connecting said adjusting lev
ers together and permitting simultaneous opera 60
tion thereof uponoperation of one of said levers,
and a yieldable member interposed between the,
upper ends of said carrier members and said op
posite ends of said members to hold said carrier
members and adjusting levers in‘th'e desired po 65
sition of adjustment with respect to each other.
ERNST a. BERGMANN.
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