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Патент USA US3100566

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Aug. 13, 1963
A. SERAGNOLI
METHOD FOR FEEDING INTO A MACHINE ARTICLES
.
3,100,561
DELIVERED BY MORE MACHINES
5 Sheets-Sheet 1.
Filed Nov. 27, 1959
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Aug. 13, 1963
A. SERAGNOLI
METHOD FOR FEEDING INTO A MACHINE ARTICLES
3,100,561
DELIVERED BY MoRE MACHINES ‘
Filed Nov. ‘27, 1959
3 Sheets-Sheet 2
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Aug. 13, 1963
A. SERAGNOLI
METHOD FOR FEEDING INTO A MACHINE ARTICLES
DELIVERED BY MORE MACHINES
Filed Nov. 27, 1959
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3,100,561
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3 ‘Sheets-Sheet 3
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United States Patent O?ice
33.1%,561
Patented Aug. 13, 1963
1
2
3,100,561
The articles 3 are discharged from the preceding ma
chines 4, 4' at a rate independent of that of the subse
METHGD FQR FEEDENG H’JTG A MACHiNE
quent machine 2 which, in its turn, has a potentiality in
ARTICLES DELIVERED BY MORE MACHlNE-S
Ariosto Seragnoli, Via Pomponia 1i), Bologna, itaiy
excess to deal with all of the articles which are dis
charged from the preceding machines 4, 4'.
Filed Nov. 27, 1959, Ser. No. 855,718
‘The problems to be solved are as follows:
Claims priority, application Italy Dec. 3, 1958
1 Claim. (Cl. 19t§--21)
To transfer the articles 3 from the channels 5, 5’ to
the feeding channel 1; to make sure that said articles
In the art there arises the necessity of feeding articles
follow up one behind the other in said channel 1, with
delivered by two or more machines, which will be called 10 out overlapping; to avoid an idle or irregular ‘operation of
the subsequent machine 2, owing to the circumstance that
preceding machines, into another machine, which Wlll.
the articles arrive from the preceding machines 4, 4’ at a
be termed as subsequent machine.
‘
rate insuflicient to feed it with full potentiality, as stated
If the productive capacity of the preceding machines
above.
is independent of that of the subsequent machine, there
arises the problem of co-ordinating the machines between
15
each other in such a way as to Warrant the operation
of the whole unit in the most efficient manner.
Various devices have been devised to solve this prob
lem.
According to some of the known devices, the ar
ticles dealt With by the preceding machines are collected
in groups in accumulators, which are then conveyed to
the subsequent machine to feed it. This system is the
The mechanism comprises two conveying channels 6,
6' which withdraw the articles 3 from the discharge chan
nels 5, 5' and convey them to a station A intended to
transfer them to the feeding channel 1.
The articles delivered by the one or the other pre
ceding machine, upon reaching station A, are gripped
by transfer members which arrange them in columns
and push them into the feeding channel 1, by inserting
them between each other in succession
?rst and most simple one of the devices so far proposed
station A.
and it is the only system which is still in use, but it
Since the operation and the structure
has various drawbacks, the most essential of which re 25
ing and transfer devices from the one
sides in the necessity of requiring a considerable num
other preceding machine are equal and
ber of intermediate accumulators and of taking them
alternatively from the preceding machines to the sub
sequent machine.
The present invention departs from What has been
devised and realized hitherto, insofar as it solves the
problem in a quite different manner and does away with
the intermediate accumulators of articles, by‘ acting in
such a way as to directly convey the articles delivered
by the preceding machines to the subsequent machine.
The spirit and the novel embodiments forming the
as they reach
of the convey—
and from the
symmetric, the
disclosure, for simplicity’s sake, will be continued only
for the conveying and transfer devices from the dis
charge channel 5 to the feeding channel 1. The opera
tion of the conveying and transfer device from the dis
charge channel 5' to the feeding channel is clearly
shown in the drawings.
The conveying channel 6 is formed from stationary side
guides 7 and from the upper portion of belt 8, which
constitutes the bottom thereof and moves in the direc
object of the present invention will be better understood
tion of the arrow, so as to act also ‘as dragging means
by having reference to the following speci?cation and
to the accompanying drawings.
for conveying the articles 3 from channel 5 to chan
The method is disclosed hereinafter with reference to 40
a particular mechanism intended to feed articles as de
livered by two preceding machines into a subsequent
machine having a productive capacity which is some
what greater than the total productive capacity of the
two preceding machines.
This invention includes certain elements known per
se.
For instance, ‘certain of these elements are shown
nel 1.
In FIG. 1 the articles 3 are not shown, so as to permit
of the parts situated thereunder to be seen.
Instead in FIG. 2, where the articles 3 are shown,
there are omitted all ‘of the conveying and transfer de
vices from the discharge channel 5’ to the feeding chan
nel 1, so as to not to complicate the drawings. For
the same reason, in‘FlG. 2 the machines 2 and 4, 4'
are not shown.
in US Patents 1,609,802 and 2,519,477. This invention
Belt *8 is closed like a ring around the pulleys 9 and
is directed to a novel ‘co-operation of these and other
10‘ carried respectively by the shafts 17 and 18 rotating
in the respective stationary supports 11 and 12 (not
shown in FIG. 2). Shaft 17 is the driving shaft and
elements to produce a new combination.
In the accompanying drawings, which refer‘ to a pre
ferred embodiment of the mechanism designed to put
into eifect the method according to the invention.
FIG. 1 is a diagrammatic and partial top view of
causes pulley 9‘ to rotate and belt 8 to move at a uni
form speed in the direction of the arrows.
This speed is chosen su?iciently high so as to convey to
55 station A all of the articles delivered by channel 5.
the mechanism;
FIG. 2 is a diagrammatic and partial front view of
Channel 5 carries articles 3 in a direction substantially
the mechanism according to line 1~1 of FIG. 1.
normal to the conveying channel 6, and discharges into
said channel.
FIGURE 3 is a schematic diagram of an electrical
In front of the outlet of channel 5, or integral with
circuit representing a preferred form of speed control
60 pulley 1t)‘, there is provided a thrust wheel. 13 rotating
mechanism used to operate the machine to be fed.
in the direction of the arrow and having lugs 14 on the
FIGURE 4 is a schematic diagram of an electrical
side turned towards channel 5.
circuit showing an alternative method for controlling
When an article 3, upon being pushed by the articles,
the speed of the machine to be fed.
situated behind, into discharge channel 5, is bearing
Referring to the drawings, the method and the mech—
anism designed to put it into effect have the purpose 65 upon the thrust wheel 13, it is by ‘one of lugs 14 ex
pelled from the discharge channel 5 and caused to enter
of supplying through a unique feeding channel 1 to a
‘the conveying channel 6, in which it keeps on moving
subsequent machine 2 the articles 3 delivered by at least
towards the transfer station A to channel 1.
two machines 4, 4’, from which they are coming out
Conveying channel 6 reaches station A. at a level
through the respective discharge channels 5, 5' formed 70 which is lower than that of channel 1 (FIG. 2); belt
from the stationary uprights, 15, 15' and from the sta
8 stops at once before reaching station A and the articles
tionary bottoms 16, 16'.
3, ‘upon being pushed by those situated behind, move
3,100,561
3
4
past said belt so as to reach a supporting plane 19‘ and
then an elevator 20, whereupon it keeps on moving as far
as to strike against a sensitive element formed from a
rod 21 provided with a locking tooth 22.
The ‘rod 21 is‘ carried by a shaft 23 rotating in the
stationary support 24 and may swing to the left against
a supporting plane 53 which permits articles 3 to be
continuously supported on the path from the transfer
station A to feeding channel 1.
In station A, in front of the inlet of channel 1, there
is provided a pusher 54 guided in the stationary support
55 and which rhythmically performs a reciprocating mo
the action of a return spring 25, as far as to reach stop
tion in the direction of the arrows, in phase with the
26. In FIG. 2 the rod 21 is shown in the position of
vertical reciprocating motion of the control rods 33. In
greatest displacement to the left.
FIG. ‘1 said pusher has been omitted so as not to com
The elevator 20‘ is carried by a rod 27‘ guided in 10 plicate the drawing.
On the feeding channel 1 there are provided a sensitive
the stationary support 28 and provided with a counter
element 56 near the machine 2 and the sensitive elements
tooth 29- located in such a way as to enter into engage
ment‘with'tooth 22 of the sensitive element 21.
56', 56" near the inlet of channel 1, whichvindicate when
the underlying area of the channel is ?lled with objects
The rod 27 carries also a boss 30, which is acted
upon by a spring 31 and extends in such a way as 15 or it is empty.
to form a supporting tooth 32.‘
Each of said sensitive elements is formed ‘from a swing
ing arm 57 carried by a shaft 53 guided in stationary
Laterally to the rod 27 there ,is axially movable,
supports contained in a box 59 enclosing electric contacts
parallel thereto, a control rod 33‘ guided in the stationary
which are closed when an article, by passing beneath an
support 314 and which is reciprocated in the direction of
the arrows by means of a mechanism not shown, such 20 arm 57, lifts the latter. The switches \operated by the
as a cam or a connecting rod and a crank system.
sensitive elements 57' and 57” are connected in series
in an electric circuit which controls the rate of operation
The control rod 33‘ is provided at the top with a boss
of machine 2 so that when the sensitive elements are
' 35, to which said spring 31 is secured, and at the bottom
with a tooth 36 adapted to cooperate with the supporting
simultaneously actuated, the rate of operation of machine
tooth 32' of rod 27 of the elevator 20. Spring 31 is so 25 2 is restored to its maximum value. The switch operated
by sensitive element 57 is connected in series with another
dimensioned that in the position shown, in the ?gure
electric circuit which reduces the rate of operation of
it is stretched and acts in such a way as to keep into
contact the supporting tooth 312 with tooth 36.
machine ‘2. If the operation ‘of machine 2 is decreased,
Channel 1 is formed from two lateral stationary edges
it will be retained at this rate of speed until it is restored
through the operation of sensitive elements 57' and 57".
37 as well as from the upper branches of belts 38 and
FIGURE 3 is a schematic diagram showing an electrical
the lower branches of belts 39 which move in the di
rection extending from station A to machine 2. and
constitute the conveying, means to cause articles 3‘ de
circuit capable of controlling the regulation of the speed .
of {machine 2. 101 ‘denotes a transformer 'having an in
livered by the station A to advance in channel 1.
Belts 38 .close like a ring around pulley 40 carried by
driving shaft 41 rotating in the stationary supports 42
and around a corresponding return pulley, not shown,
at the end of feeding channel 1 adjacent the subsequent
put 100. One side of the output ‘of the transformer is
machine 2.
Similarly, the belts 39 close like a ring around the
With vthis arrangement, circuit 104- will operate the motor
106 at maximum speed, while circuit 105 will operate
pulley 4-3v carried by the driving shaft 44 rotating in the
stationary supports 45 and around a corresponding're
turn pulley, not shown, at the end of the feeding channel
1 adjacent the machine 2.
the motor at a minimum speed. The tele-cornrnutator 103
grounded and represents one side of all the individual
circuits running to the motor 106. \103 denotes a tele
commutator complex and 104 and 105 indicate, respec
tively, the three-phase feeding lines for the motor 106.
controls the operation of these two circuits. The opera
tion of the tele-commutator is in turn controlled by
switches 57, 57', and 57". Current will be supplied to
The speed of belts 318 is in excess when it is needed 45 high-speed circuit ‘104 when the tele-commutator receives
to feed into the subsequent machine 2 all of the articles
impulses through switches 57, 57' and 57", and current
is maintained in this circuit until switch 57 is closed.
which it might be able to deal with, so that during the
operation said articles accumulate on the bottom of
Circuit ‘106 which operates the motor at minimum speed
has been omitted so as to permit to see the underlying
will be supplied with current when the tele-commutator
undergoes an interruption of current through switch 57,
which current will be maintained until switches 57’ and
57" are again closed.
A more simpli?ed control mechanism is shown sche
matically in FIGURE 4, wherein 101 denotes a trans
former having an input 100. One side of the output is
parts.
grounded at 102. ‘110 indicates a remote control switch
the channel, towards machine 2.
Above the elevator 20 and at the corresponding
elevator 20’ concerning the conveying channel 6’, on the
extension of edges 37 there are provided the two swing
ing uprights 46. in FIG. 1 there is shown only one of
them, namely the right one; the symmetrical left upright
Said swinging uprights in their lower part have square
and 111 denotes the three-phase feed line for driving
projections which form small bearing planes 47; in the
motor 106 of machine 2. When all the switches 57, 57'
underlying part they show an inclined plane and their
and 57" are closed, the remote control switch 110 is
‘lower line is higher than the upper ‘line of articles 3 60 energized, which in turn drives motor 106. Current is
which, upon being pushed by belt 8, pass beneath the
continuously supplied through the self-excited remote con
same so as to reach elevator 20‘.
trol switch until switch 57 is opened. Current will again
Said swinging uprights 46 are carried by shafts 43
be supplied when all of the said three switches are again
rotating within stationary supports 49‘. They are able
simultaneously closed.
to swing outwards by overcoming the opposition of
The working of the ‘object of the invention will now
spring 50' which acts in opposition between said upright
be described with reference to the transfer of articles 3
and a point of the stop 51.
Said stop 51 serves also to
limit. the inward swinging action of the upright through
arm 52 integral with said upright and which strikes
against the stop.
I
70
‘In the area left between the end of channel 1 ad
jacent the transfer station A and the operating area of
the aforesaid swinging uprights there is a space in which
articles 3 would not be supported either by the small
planes 47 or by belts 38. In this area there is provided 75
from the machine 4 to channel 1.
The articles 3 which are discharged from the preceding
machine ‘4, by moving along the discharge channel 5,
reach the thrust wheel 13. One of the lugs 14‘ of said
wheel push the articles 3 on the conveying channel 6.
Belt 8 causes the articles ‘3 to move along said channel
as ‘far ‘as to strike against the sensitive element 21 and
to shift it outwards, so as to disengage tooth 22 of said
sensitive element from tooth 29 of the elevator rod.
3,100,561
5
6
Thus, when the control rod 33 ascends, it drags up
wards also the rod 27, through the resilient connection of
spring 31 whose force, when it vis closed, is su?icient to
articles which is greater than that supplied thereto. At a
overcome the weight of elevator 20 and the forces of
inertia and of friction. The elevator 20 thus ascends to
take the article 3 between the movable uprights 46 which
certain moment, beneath the sensitive element 56 there
will ‘be no thrust exerted by the articles, so‘that it will
fall down and break the exciting circuit of an electric
relay (not shown) which varies the speed of run of the
subsequent machine 2, either by stopping it or by reduc
are being opened and receive it, whereupon they close
again and support it from beneath, owing to its bearing
ing its speed in such a way as to cause its productive
3 onto the supporting plane 53‘, so as to push forward
under the action of belts 38 and 39 an equal number of
them are being increased and the sensitive element 56
articles which have previously reached plane 53. In a
kept unexcited until an impulse of electric exciting cur
capacity to get lesser than the total productive capacity
upon the small planes 47, at the upper level of belts 38
of the preceding machines 4, 4'.
which constitute the bottom of channel 1. The pusher 10
Thereupon an operation phase follows in which the
54 advances towards the channel 1 and pushes the articles
number of articles heaped up and the area occupied by
again closes the circuit of the relay which, however, is
modi?cation, articles 3 may also be directly pushed by 15 rent is transmitted to it.
This is attended- to by the two sensitive elements 56',
traversing the whole plane 53.
56" which are inserted in series, one upon- the other,
pusher 54 as far as to reach the aforesaid belts, by
In any case, belts 38, 39 grip the articles and move
on the circuit supplying the electric energy impulse so
as to again excite the aforesaid relay.
articles which are already in channel .1.
Said sensitive elements '56’, 56" are placed one behind
20
If at the moment, in which control rod 33 ascends, no
the other at such a distance that, as long as: the articles,
article has struck yet the sensitive element 21 and shifted
which move along the feeding channel 1, are separated
outwards tooth 22, the movement of rod '27 will be pre
between each other, at least one of said two sensitive ele
vented by tooth 22 which engages with tooth 29, in which
ments always keeps open the circuit, whereas, if the area of
case rod 33 ascends alone without lifting ‘rod 27: this
heaped up articles, when being progressively increased,
them forward as far as to take them against the other
is permitted by spring 31 which is being stretched, where
extends as far as to reach from below the said sensitive
as tooth 36 moves away from boss 32.
elements 56', 56", they will be simultaneously lifted so
Thus, the elevator 20 can ascend only upon an article
3 having reached the correct position above it and all
of the articles delivered by the machine 4 will be duly
conveyed in succession into channel ‘1, without running
the risk of being overlapped and of meeting obstacles.
The small plane 53 offers a sure support for the articles
3 when passing from the swinging uprights 46 onto the
operating area of belts 38, 39.
It will now be necessary to provide a system intended
to avoid an irregular operation of the subsequent machine
2 which, in order not to limit the yield of the preceding
as to close the circuit supplying the electric- impulse ex
citing said relay and to cause the subsequent machine
2 to again operate at the maximum productive capacity.
By suitably proportioning the capacity of the afore
said reservoir to the potentiality of the machines, it
will be possible to achieve that in practice the said relay
performs a small number of interventions per hour, and
the operation takes place in quite a satisfactory manner.
Having thus described the method and mechanism
which form the object of the present invention, with
reference to a preferred form of embodiment, it will be
machines 4, 4', must have the capacity of dealing with
obvious for experts that many variations and modi?ca
a number of articles which is somewhat greater than the 40 tions may be made without thereby departing from the
number of articles discharged by the two preceding
spirit and the purposes of the invention, and it is to be
machines taken together, so that from time to time it
understood that the present patent is intended to cover
would have to desist from performing an operation, owing
all of the forms which fall within the spirit and the
to the failure of receiving a number of articles correspond
purposes of said patent.
ing to its potentiality. This is achieved by causing chan 45 In particular, there is provided: that any number of
nel 1 to act as a reservoir or accumulator, whose length
preceding machines may be arranged, from whose dis
is proportioned in such a way as to permit between the
charge the articles will be collected which are intended to
sensitive element 56 and the group of sensitive elements
be taken to a subsequent machine; that the articles reach
56’, 56" the accumulation of a certain quantity of ar
the conveying channels from said machines in any way
ticles, proportioned to the difference between thepoten 50 whatever; that the conveying channels and the feeding
t-iality of the subsequent machine 2 and the total poten
channels to the ?nal machine may be of only one of the
tiality of the two preceding machines 4, 4' taken together.
various types known; that the feeding channel has the
The operation of the sensitive elements is as follows:
belts arranged laterally instead of on the top; that the
It is to be borne in mind that, when pusher 54 pushes
sensitive elements act sidewise or below; etc. etc., with
towards channel 1 the articles 3‘ which have been lifted 55 out thereby departing from the limits of protection of
the present patent.
by the elevators 20, 20' (or by only one of them, if on
What I claim is:
the other elevator there was not yet an article in the right
position), the articles themselves, at an equal number
A mechanism for feeding articles
a ?rst and a
of those accumulated by the small supporting plane 53
second machine to a third machine comprising common
(according to the stroke of the pusher) are taken under
transfer station means, ?rst and second conveyor means
the action of belts 38, 39 which move them forward.
connecting said ?rst and said second machines to said
Thus, in the feeding channel 1, ll-l'l an area situated
transfer station means, and additional conveyor means
quite close to transfer station A, there is a succession of
connecting said third machine to said transfer station
single or coupled articles which advance by following
means, said transfer station means comprising a pair
each other, spaced apart at regular ‘intervals, towards the
bottom of feeding channel 1 adjacent the subsequent
machine 2, where they reach the previously conveyed
of elevators normally positioned below said additional
conveyor means in a position to receive articles from
said ?rst and said second conveyor means, means for
articles and place themselves one behind the other.
rhythmically reciprocating said elevators to a posi
Now, there will be described the operation of the sen
tion adjacent said additional conveyor means, pusher
sitive element 56 provided in the area where the articles 70 means and means for reciprocating said pusher means in
are being crowded. As long as said area is occupied by
phase with said elevators whereby said pusher means
articles heaped up between each other, the sensitive ele
pushes said articles from said elevators to said additional
ment 56 maintains its upper position so as to keep closed
conveyor means, said ?rst and said second conveyor
the contact. The subsequent machine 2 runs at full
means each comprising a continuous belt-type conveyor
speed, withdrawing from feeding channel 1 a number of 75 mounted on two pulleys located at the inlet and outlet
3,100,561
7
7
'
7
ends thereof, respectively, the pulley located at said inlet
end having a lng wheel integrally mounted thereon for
pushing said articles onto said continuous [belt-type con
veyor, the axis of rotation of said lug wheel being par
allel to the plane of said conveyor, said additional con
veyor means including speed control means connected to
said third machine and positioned in the path of articles
moving on said additional conveyor means to reduce
\the speed of said third machine when there are no
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,543,737
1,609,802
2,355,036
2,519,477
2,828,794
2,862,601
Thornton ____________ __ June 30, 1925
Ekstrom __________ _>___.._ Dec. 7, 1926
641,978
1,077,146
2,320
Germany ____________ __. 'Feb. 19, 1937
Germany ______________ __ Oct. 21, 1960
Great Britain __________ ___., Feb. 1, 190-8
Berthold ____________ __ Aug. 1, 1944
Kind ________________ __ Aug. 22, 1950
Baumann ______________ __ Aug, 1, 1958
Littwin ______________ __ Dec. 2, 1958
articles adjacent said speed control means, said addi 10
' tional conveyor means including further control means
adjacent said additional conveyor means and said transfer
station means, said :further control means being con
nected to said speed control means to deactivate said
speed control means when articles are adjacent said further 15
control means.
FOREIGN PATENTS
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