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Патент USA US2123432

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July 12, 1938.
c. L. MATTxsoN
Original Filed July 12, 1930
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July 12, 1938.
c. |_. MAT‘rlsoN '
Original Filed July 12‘J 1930
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Patented `luly 12, 1938
Carl Lawrence Mattison, Rockford, Ill., assigner
to Mattison Machine Works, Rockford, 111., a
corporation of Illinois
Original application July 12, 1930, Serial No.
467,501. Divided and this application August
7, 1936, Serial N0. 94,833
3 Claims.
(Cl. 14A-12S)
The invention has reference to a mechanism
for feeding articles to be operated upon to certain
types of operating machines such as moulders or
the like.
The present application is a division of my
copending application, Serial‘No. 467,501, filed
July 12, 1930, now Patent No. 2,053,915.
An object of the invention is to provide a new
operate upon a succession of articles fed thereto,
such as certain types of Wood working machines,
of which the machine known» to the trade as a
moulder is a characteristic example. A feeding
mechanism, as used with such a machine, is
mounted at the front side of the bed of the ma
chine and embodies mechanism by which a suc
cession of articles to be operated upon, such as
and improved mechanism of this character which
is simple `and sturdy in construction, efñcient in
operation and which feeds the articles steadily
and accurately to the operating machine.
Another object of the invention is to provide
tion of the machine or may be applied to a ma
a mechanism of this character which embodies
15 a constantly moving chain of novel construction,
ation or change in the structure of the mech
for feeding the articles, in combination with
means for supporting said chain in the feeding
movement thereof in such a manner as to dis.
tribute the forces longitudinally of the chain.
More speciñcally stated, it is an object of the
invention to provide a feeding mechanism which
includes an endless feed chain, adapted to sup
port articles under a pressure-applying means,
and means for supporting the article-engaging
25 run of the chain comprising a plurality of rollers
underlying and supporting said chain opposite
the points where the pressure is applied, the
chain being so constructed that, through the co
operation of said rollers, the stress is distributed
30 throughout a substantial section lengthwise of
the chain.
Other objects and advantages will become ap
parent in the following description and from, the
accompanying drawings, in which:
Figure 1 is a side elevation of a feeding mech
anism embodying the features of the present
Fig. 2 is a longitudinal section through the de
Vice taken substantially along the line 2--2 of
40 Fig. 1.
Fig. 3 is a bottom plan view of a section of the
feed chain.
Fig. 4 is a top plan view of a similar section of
the feed chain.
Fig. 5 is a top plan View of one of the feed chain
Fig. 6 is an end elevation of one of the links.
Figs. '7, 8, 9, and 10, .are sections of individual
pivot lugs taken as indicated on the line '1_-l,
50 8_8, 9_9, lll-Ill, respectively, of Fig. 5.
Fig. l1 is a side elevation of a portion of the
feed chain showing a modified form of abutment
between adjacent links.
The present invention, as herein illustrated, is
used in connection with machines arranged t0
pieces of wood, may be fed steadily, rapidly and
accurately into the machine. The present or 10
ganization is adapted to be built into the machine
with which it is to be used during the construc
chine already in existence without material alter
Referring more particularly to the drawings,
2l) designates generally a frame arranged to be
secured, as by the bolts 2l, to the machine with
which the mechanism is to be used. Such de
vices as set screws 22, bearing between the frame
20 and a part of the machine A, may be em
ployed accurately to adjust the frame relative to
the machine. The frame is somewhat elongated
and supports a pair of shafts 23 which, in this
instance, extend horizontally and parallel from
opposite ends of the frame. Each of the shafts
23 carries a sprocket assembly 24 secured thereon
as by a nut 23a, which assembly herein com
prises a pair of spaced sprockets 25 connected 30
by a hub 26.
One or the other, or both of the
sprocket assemblies is driven in any suitable
manner to impart movement to a feed chain
assembly 2l which passes about said sprockets.
The particular construction of the feed chain
assembly will be hereinafter described.
The arrangement of the frame, the sprockets,
and the feed chain is such that one run of the
chain (herein the upper run) between the
Sprockets will be in lalinement with the bed of
the machine. Consequently, articles will be fed
into the machine by the upper run of the chain.
In order to insure a positive, steady, and accurate
feed, a well-known type of means is employed
for holding the articles securely against the bed 45
surface of the chain. This means is diagram
matically illustrated in Fig, 1 as being presser
rolls B disposed above and adjacent the upper
run of the chain and inwardly thereof from the
axial centers of the sprockets. Accuracy of feed- .
ing is obtained by providing an elongated guide
28 (Fig. 1) which is secured to the frame 2D and
extends along one side of the upper run of the
feed chain
The presser rolls B, or other pressure applying 55
means, are usually slightly canted with respect
to the direction of travel of the feed chain so
that an article passing between the presser rolls
and the feed chain will be forced sideways on
the chain until it engages the guide 28.
mally, the presser rolls B are adapted to exert
a considerable force against an article passing
therebeneath, in consequence whereof tremen
dous strains, caused by this force as well as by the
laterally directed force produced by the canted
>relationship of the presser rolls, are transmitted
to` the feed chain. Means is, therefore, pro
vided for supporting the article-conveying or
upper run of the chain.
first-mentioned set and are somewhat heavier
The chain supporting means, which is pref
erably employed, comprises >(see Fig. 2') a plu
rality, in this instance three, of spaced parallel
shafts 29, 30 and 3| mounted in the frame. The
axes of these shafts are parallel and extend hori
zontally of the frame at substantially regularly
spaced intervals between the shafts 23. Two of
the shafts, which are herein shown as being the
shafts 29 and 30, underlie and are in substantially
and more substantial in construction. 'I'he two
Vsets of lugs on each link are so spaced from
reach other in the direction of travel that a gap
vertical alinement with the axes of the respective
Idle supporting rolls 32 are ro
tatably mounted on 'the shafts 29 and 30 and the
25 presser rolls B.
assemblies thereof preferably include interposed
roller elements 33. VThe size of the rolls 32 and
the position thereof on Vthe shafts 29 and 30 is
30 such that the surface of the'roll engages the inner
surface of 'the upper run of the chain between
the sides of the chain. Due to the position
of the shafts 29, 30 with respect to the presser
rolls B, the rolls Y32 engage andsupport the chain
35 at the points Where the presser rolls B apply
the greatest force thereto.
The shaft 3| likewise carries an idle supporting
roll 34 arranged to engage the inner face of the
upper run of the chain at a point substantially
40 intermediate the sprockets to support the central
portion of the‘chain at the point where a work
performing tool (not shown) operates on the
Work, ‘said tool usually exerting considerable
downward pressure on the work. Suitable roller
45 bearings 35 are interposed between the roll 34
and the shaft 3| and the assembly also provides
such'means as washers 36, or the like, at each end
of the roll as thrust >bearings to prevent axial
movement of the roll.
article-engaging face 38. One set comprises the
ñve lugs designated 39, 40, 4|, 42 and 43, and the
preferred arrangement spaces the lugs at sub
stantially regular intervals between the opposite
ends of the body member. The lugs have alined
apertures 44 formed therein for receiving a pivot
pin 44a.
The other set comprises a pair of similarly
formed lugs 45 and 46 extending in the same
manner, but in the opposite direction longitu 10
dinally of the chain. These lugs 45 and 46 are
positioned in intermediate or staggered relation
tothe centrally located lugs 40, 4| and 42 on the
The chain construction preferably employed in
connection 'with the previously'described organi
zation is of the endless type comprising a plu
rality of similar links, each arranged to have
a complementary interñtting relationship with
adjacent links to form the chain. The present
is formed'therebetween, as indicated by the brack
et lettered “C” in Fig. 6. rI‘he lugs 45 and 46
are also provided with alined apertures 41 for 20
pivot pins'44a. It will be apparent that Aby this
construction the lugs 45 and 46 on one side of the
link may be inserted between lugs y40, 4| and 42
on an adjacent link to provide an interñtting re
lationship 'in which the apertures 4'! on the lugs 25
45 and '46, and the apertures 44 on the lugs 4|),
4| aud 42, are alined to receive the pin 44a for
securing the links together.
As is shown clearly in Fig. 6, the lugs are
substantially elongated transversely of the link, 30
or'in the direction of travel of the chain, and
that the major portions of the lugs are positioned
laterally beyond the side edges of the article
engaging face. Moreover, the pivotal centers or
axes of the alined apertures 44 and 4'| are like
wise located beyond the yedges of the face so
that, when the links are combined to form a
chain, a gap or space 48 (Fig. 4) of substantial
width is 'provided between the sides of adjacent
links. These gaps or spaces permit foreign mat 40
ter to pass freely through the chain during the
operation thereof.
It is, however, contemplated that there might
be a tendency for particles of unusual size to be
come wedged between the side faces of adjacent
links, -and to overcome this difficulty the side
faces, as shown at 49 in Figs. 7, 8, 9, and 10, are
undercut or otherwise formed to slope inwardly
of the body member from the article-engaging
face 38.
This sloping face may be continuous, or as has
been found advantageous, those portions of the
side face adjacent the lugs may be cut away thus
providing alternating sloped surfaces on opposed
rectangular shape. One‘face'of‘the body portion,
In consequence, as the 55
chain passes about the sprocket, during which
passage the space between the links first increases
and then decreases, the sloping surfaces exert a
wedging ~»force on particles of foreign matter 'to
eject said particles from between the links.
Means are provided for limiting the relative
pivotal movement of the links in one vdirection
to a point in which the links will be positioned
in substantially the same level plane, whereby a
chain is »provided which is self-supporting and 65
cannot sag when straightened intermediate the
here shown as the outer face and designated 38,
centers of the sprockets over which it passes.
constitutes an upper or Varticle-engaging face of
To ‘this end, (see Figs. 4, 5, and. 6), one side
face of the body member of the link is provided
with a pair `of laterally extending lugs or abut
ments 5|). These lugs are preferably positioned
adjacent the ends of the link, and, as sho-wn in
chain, while being constructedto ‘cooperate with
the supporting means on the frame, is, in itself,
so fashioned that it adds to and materially en
hances the sturdiness and rigidity of the entire
60 mechanism.
Referring particularly to Figs. 5 and'6, a de
scription of one of the links will vsuffice for all.
Each »link comprises a unitary structure, pref
erably formed of cast metal, having an> elongated
body portion or member Í3'! of approximately
the link of relatively short dimension in the
70 direction of travel, which face may, if desired,
be serrated or otherwise roughened `positively to
engage the article to be conveyed. The body
memberhas a plurality of transversely extending
lugs arranged in two sets and projecting from the
75 inner lface thereof in a direction opposite to the
faces of adjacent'links.
Fig. 5, will generally be disposed in intermediate
relation to the outer pairs of lugs 39, 40 and 42,
43 onëthe opposite side of the body member.
The abutments 5u are so formed that positive
engagement thereof with the side of the next
adjacent link is produced when the article-en
gaging faces 38 of said links are flush or are
in the same plane. By virtue of this abutment,
therefore, the relative pivotal movement of ad~
jacent links is limited in one. direction to a
position in which the article-engaging faces are
level and, as a result, the upper run of the chain
will extend in a straight line directly between
the sprockets at each end thereof,-thereby pro
viding a flat, level and sturdy article-conveying
face thereof. The pivot pin 44a is radially bored,
as at 5l, at a point‘which registers ‘with the
groove 56 when thevparts are 'assembled so that
a suitable member, such 'as the cotter pin 58`
(Fig. 6) may extend through the bore 5l with
the ends positioned in the recess to prevent dis
placement of the pin.
In considering the `operation of the mechanism,
it will be seen that when the device is combined
with a machine, either as a permanent part
bers of alternate links are provided with later
thereof, or as an attachment, the upper run of
20 ment for engagement with the side face of the
adjacent link to limit the relative pivotal move~
ment of the links in the manner previously de
Another feature of the invention resides in the
25 arrange-ment of parts by which a substantially
on the side thereof, opposite the article-engag~
ing face, for engagement with the supporting
rollers. As may be seen in Figs. 6, 8, 9, and 10,
30 the free ends of certain of the lugs, in this
instance the centrally located lugs flil, lil, e2,
45, and 4E, each present an elongated flat bottom
face 53, which faces are in a plane paralleling
the article-engaging face 38.
the feed chain presents a iiat, level surface for
conveying articles through the machine. The
application of pressure to the work-carrying face
38 of any given link causes said link to exert
forces on the two pivot pins Illia by which it is
connected to the two adjacent links. Because
ofthe support offered by the supporting roll,
fiat continuous surface is provided on the chain
The links are so
35 arranged that the faces 53 of certain lugs of at
least one of the two links on the respective sides
of a given link are in, contact with a supporting
roll during the time when the article-engaging
face 38 of sai-d given link is passing the point of
40 pressure.
The relationship- of the pivotal centers of the
lugs to the faces` is such that the major portion
of the faces 53 lie on the outer side of the axis.
the-"ï'fl:«>r-ces` »on the two pivot pins are trans
mitted to the two adjacent links which in turn
are held in position by their abutment with the
links next beyond them.
Particularly is this apparent when the point of
application of pressure on a given link is opposite
the gap C-between the two sets of lugs thereof.
In this position, the lugs of the two adjacent
links, which bridge the gap C, are in‘contact with
the supporting roll, and the lugs of the given
link are out of suchY contact.
Thus, the pressure
on the given link, through the pivot pins, tends
to cause the two adjacent links to swing'away
from the given link and about the line of con
tact with the supporting roll as a fulcrum. How
ever, such swinging is prevented by the abutment
of the links next beyond the adjacent links, and 40
such abutting links are likewise held in abutment
with said adjacent links by the next links. It
face is pro-vided on the under side of the chain
(which is the side opposite the faces 38) when
is thus apparent that the stresses are distributed
through a substantial section lengthwise of the
Means is provided for guiding the article-con
veying run of the chain, which means operates
to prevent lateral displacement of the chain by
the effect and force of the canted presser rolls
B. For this purpose, one of the idle supporting 50
rolls, preferably the center roll 34, carries an an
the chain is in a straight line position.
nular outwardly extending rib 59 (Fig. 2). On
l Preferably, the proportions are such that, when
45 the links are connected together, the gap C beu
tween the sets of lugs on any given link is
spanned or bridged by lugs on the two links on
opposite sides of said given link and the lugs on
said two links extend past each other. Hence,
as may be seen in Fig. 3, a continuous level sur
While the two outer lugs 39 and 43, which
are generally formed flush with the ends of
the link, may present flat faces similar to
the faces 53, these lugs are preferably rounded,
as shown at 54 (Fig. 7), in order to eliminate
exposed sharp corners on the chain.
The two
60 outer pairs of lugs 39, lll) and 42, 43, in the
present embodiment, do not receive therebetween
any complementary lugs on adjacent links, such
space being left open to permit the teeth on the
sprockets 25 to engage the pivot pins Ma for
driving the chain. Preferably, antifriction roll
ers 55 (Figs. 2 and 3) are carried by each pivot
pin 4ta between the lugs 39, 45 and 42, 43 to
lessen the resistance of the chain in passing
about the sprocket. It should be noted that the
70 lugs are of substantial length and that the pivot
pins are near the outer ends of the lugs.
teeth of the sprockets 25, therefore, can only en
gage the rollers 55 and cannot Contact the inner
surface of the body member.
(in >this instancethe `lug 46) has a groove or
recess 56 (Fig.-f`8)í extending across! one side
A modified form of limiting abutment- is shown
in Fig. 11. In this modification, the body mem
ally extending, longitudinally spaced, screw
threaded bores 5l arranged to receive headed
bolts 52. The heads of the bolts form the abut
movementby simple means which is readily de#
tachable in order to permit any of the links -to
be separated. To this end, one of the pivot lugs
The pivot pin is maintained against axial
the chain, one of the lugs (in this instance the
central lug lil) has an elongated groove 60 (Figs. 55
3, 5, and 10) formed in the face 53 thereof to
engage said rib. These grooves 65 will, of course,
be alined longitudinally of the chain when the
chain is complete and as the chain passes from
one sprocket to another the interfitting rib and 60
groove relationship guides the chain and pre
vents lateral movement thereof.
Obviously, the
same result would be effected by reversing the
position of the rib and groove.
It will be apparent from the foregoing that the 65
present invention provides a mechanism having
a level article-conveying bed or surface which
is capable of unyieldìngly withstanding the
stresses and strains incident to the operation 70
thereof and which accurately and evenly con
veys articles- in an operating machine. The
structure of the chain cooperates with the sup
porting roll in such a manner that the stresses
due to application of pressure on the chain are 75
distributed through a substantial section length
Wise of the chain.
I claim as my invention:
ward pressure upon the individual links succes
sively, each link as a portion of it passes under
said pressure device being out of contact with
1. A feed mechanism having, in combination,
said supporting roll and transmitting the pres
, a traveling chain comprising a plurality of piv
oted links each having a top work-engaging face
and having two sets of lugs diverging downward
to provide a gap between the lower ends of the
two sets lengthwise of the chain, a supporting
10 roll underlying the chain and engaging the alined
bottom faces of the successive sets of lugs as the
chain travels, the two sets of lugs on the links
adjacent to any given link intermeshing with the
lugs of said given link and jointly bridging said
15; gapto engage the line of support on said sup
porting roll when the two sets of lugs of said
given link are in a position straddling said line,
pivot pins connecting said intermeshing lugs, and
a, pressure roll overlying the chain directly above
said supporting roll and acting to exert down
ward pressure upon the individual links succes
sively, such pressure when the lugs of a given
link are in the said straddling position being
transmitted through two of said pivot pins to
the links adjacent to said given link,v thereby
distributing the stresses through a substantial
section lengthwise of the chain.
2. A feed mechanism having, in combination,
a rotary supporting roll, a traveling chain corn
prising pivotally connected links each having a
top work-engaging face and two bottom faces ar
ranged to engage said roll and spaced apart
lengthwise of the chain to provide a gap between
them, the corresponding roll-engaging faces of
35 adjacent links projecting into and bridging said
gap, and a pressure device overlying the chain
above said supporting roll and exerting down
sure thereon to the two- adjacent links while the Ul
said bridging faces are in engagement with said
supporting roll.
3. A feeding mechanism having, in combina
tion, an endless chain arranged to carry articles
to a pressure-applying means and to support said
articles at the point of pressure, a pair of spaced
sprockets for driving said chain, and a roll posi
tioned between Said sprockets and in contact
with the chain to support the chain at the point
of pressure, said chain comprising a plurality 15
of links adapted to carry the articles on its outer
face and having interiitting lugs extending in
wardly to provide a bearing surface engaging
said roll, pivot pins connecting said lugs and ex
tending laterally beyond said lugs, and rollers 20
mounted on the outer ends ‘of said pivot pins
at the respective sides of said chain for engagement by said sprockets, each of said links also
having a pair of lugs supporting the ends of the
pivot pin beyond said rollers, the roll-engaging 25
lugs of a given link being spaced apart lengthwise
of the chain to provide a gap between them with
the corresponding lugs of the adjacent links
projecting into and bridging said gap, the bridg
ing portions of the lugs of said adjacent links
being in contact with the supporting roll when
the point of application of pressure on the given
link is opposite said gap, whereby the stresses
are distributed through a substantial section
lengthwise of the chain.
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