Product support apparatus

A product support apparatus for supporting products on a conveyor system during processing, and having a hanger assembly upon which products may be placed, and having leg portions and abutments at each end, a support bar for the hanger assembly, the support bar having a pair of parallel spaced-apart rods supported side-by-side and defining an elongated slot therebetween, junctions, extending between the rod members clear of the slot, connection devices secured to the rod members for connection to a conveyor system, and, a check at each end of the rod members engageable by the abutments on the hanger assembly to restrict sliding movement.

FIELD OF THE INVENTION 
The invention relates to product supports for supporting products while 
being processed in a smoke house, or cooking or processing facility, or 
the like. 
BACKGROUND OF THE INVENTION 
Meat and fish products, typically, for example, sausage products, may be 
processed in a variety of different ways. In some cases, products are 
simply stored for a certain length of time under controlled conditions of 
temperature and humidity. In other cases, products are cooked, or smoked, 
or cooked and smoked. While being processed, the products are, in most 
cases, supported on hangers, formerly referred to as smoke sticks. The 
products, usually sausages, were simply draped over the hangers and 
suspended on a conveyor system, while being stored in or transported 
through the processing facility. One of the problems in the design of such 
hangers is that they must be manually loaded with product and then placed 
in position on the support or conveyor. In the great majority of 
facilities, the loaded hangers must be placed by hand on the conveyor from 
one side or the other of the conveyor. In the past, it has been the usual 
practice to, as it were customize, the facility, so that hangers loaded 
with product could be loaded from one side of the conveyor, but not from 
the other. 
In many cases, the hangers simply employed a form of hook system at each 
end, and the hooks then had to be manually engaged with portions of the 
conveyor. It will be apparent that this task presents some difficulties. A 
hanger loaded with product may weigh 50 to 70 pounds. Reaching into a 
chamber or an oven, and attempting to engage a hook located at the far end 
of the hanger, with a catch or eye at the far side of the conveyor, in 
these circumstances, is clearly a somewhat difficult task particularly, 
when it is borne in mind that the hangers must be loaded on the conveyor 
at brief time intervals. 
An improved form of hanger is disclosed in U.S. in U.S. Pat. No. 4,540,094 
in the name of Knud Simonsen Industries Limited. In this system, the 
hanger is provided with an arm at each end, terminating in a ball. The 
conveyor was provided with hanger support bars, each of the support bars 
being formed of a hollow tube, with an open slot along the lower side. In 
this system, the ball on one of the arms of the hanger could be fed into 
the hollow tube at the "near" end, and the ball could then be slid along 
inside the tube to the far end of the tube, and the ball at the near end 
of the hanger could then simply be placed in the near end of the tube. In 
this way, the weight of the product on the hanger was at least partially 
supported as soon as the first ball entered the near end of the tube. 
An added advantage of this form of hanger system was the fact that the 
hangers could be attached to their support bars, from either side of the 
conveyor. This provided a considerably more flexible design. While this 
system functioned satisfactorily, it was somewhat more expensive to 
manufacture than the simpler forms of hangers used in the past, and 
consequently it was not always acceptable to customers. Clearly, it is 
desirable to provide a hanger having the advantages described above, but 
which can be manufactured at a price comparable with that of earlier prior 
art systems. 
BRIEF SUMMARY OF THE INVENTION 
With a view to achieving the advantages described above, the invention 
comprises a hanger apparatus for supporting products in a processing line 
having a conveyor system, and comprising product support apparatus for 
supporting products on a conveyor system during processing and comprising 
a hanger assembly upon which said products may be placed, said assembly 
defining two ends, and having arm portions, and abutment means, at each 
said end, support bar means for said hanger assembly and, in turn, 
comprising a pair of parallel rod members defining two ends and supported 
side-by-side and spaced apart a predetermined spacing and defining an 
elongated slot therebetween adapted to receive said leg portions, junction 
means extending between said rod members, clear of said slot, connection 
means secured to said rod members for connecting same to a said conveyor 
system, and, check means at each said end of said rod members engageable 
by said abutment means whereby to restrict sliding movement thereof along 
said rod members. 
The invention further comprises such a product support apparatus wherein 
said hanger assembly comprises three spaced-apart mutually parallel hanger 
members, means joining said rod members together, end arms extending from 
opposite ends of said hanger members, abutment knob means on said end 
arms, said end arms defining a width adapted to fit within said 
predetermined spacing of said elongated slot, and said abutment knob means 
defining a predetermined width greater than said predetermined spacing, 
whereby to prevent the same from passing through said elongated slot. 
The invention further comprises such a product support apparatus wherein 
said junction means extending between said rod members comprise a 
plurality of spaced-apart generally arch-shaped members, defining two 
lower free ends, joined to respective said rod members, thereby supporting 
same in said predetermined spaced-apart relation, said arch shaped members 
extending upwardly from said rod members whereby to permit free passage of 
said abutment means between said rod members and said junction means. 
The invention further comprises such a product support apparatus including 
connection bar means connecting between at least two said arch shaped 
members. 
The invention further comprises such a product support apparatus including 
connection column means on said connection bar means extending upwardly 
therefrom for connection to conveyor means. 
The invention further comprises such a product support apparatus including 
end portions on said spaced-apart rod members, said end portions being 
angled towards one another in a converging manner, whereby to define a 
progressively reducing width of said elongated slot between said rod 
members at each said end thereof. 
The invention further comprises such a product support apparatus including 
connection means at each end of said support bar means, said connection 
means being adapted to extend into engagement with spaced-apart conveyor 
means. 
The invention further comprises such a product support apparatus further 
comprising at least two said hanger assemblies, located in vertically 
spaced relation, connection means extending therebetween, and each said 
hanger assembly being adapted to engage support bar means thereon whereby 
product may be supported in vertically spaced-apart relation. 
The invention further comprises such a product support apparatus including 
attachment means on said hanger assemblies, said attachment means 
extending downwardly therefrom and being adapted to receive hanger stick 
means thereon. 
The invention further comprises such a product support apparatus wherein 
said check means comprise ramp portions at each end of said rod members, 
defining upwardly sloping engagement surfaces for engaging said abutment 
means. 
The various features of novelty which characterize the invention are 
pointed out with more particularity in the claims annexed to and forming a 
part of this disclosure. For a better understanding of the invention, its 
operating advantages and specific objects attained by its use, reference 
should be had to the accompanying drawings and descriptive matter in which 
there are illustrated and described embodiments of the invention.

DESCRIPTION OF A SPECIFIC EMBODIMENT 
Referring first of all to FIG. 1, it will be seen that the invention is 
here illustrated used in association with a processing chamber 10, which 
is simply shown having a rectangular cross-section, and being located 
along a straight line axis. 
As will become apparent below, the invention is not however limited to 
processing chambers having a straight line axis, but is also applicable to 
processing chambers extending around corners, or even of sinusoidal design 
(see FIG. 6). 
As shown in FIG. 1, the chamber 10 has a straight line conveyor system 
indicated generally as 12 comprising two parallel spaced-apart rails 
14--14, each of which is provided with suitable conveyor chains or other 
movement means 16--16. The chains or other movement means are driven by 
any suitable prime mover (not shown) such as is well known in the art, and 
which is omitted for the sake of clarity. 
Pluralities of trollies 18--18 are provided on the rails, and are connected 
to the chains in any suitable manner such as is well known in the art. The 
trollies are spaced apart along the rails, by predetermined equal 
spacings, in most cases, the spacing being determined by the speed of 
travel of the chains, and the speed at which a man can lift, and position, 
a loaded hanger, and also the processing dwell time required within any 
given portion or zone of the chamber. 
It will be understood that while the chamber 10 is illustrated as a single 
chamber, it may be divided up into two or more or several separate zones 
(not shown) in a manner well known in the art. Similarly, the zones 
themselves may be provided with various different forms of conditioning 
apparatus whereby various different processing conditions may be 
established in separate zones, again in a manner well known in the art. 
Thus, the chamber 10 may be a single continuous chamber, in which portions 
of the chamber constitute separate zones, or alternatively the chamber 10 
may represent a series of separate chambers each providing a "zone", with 
the product transferred on the conveyor rails 14--14 from one chamber or 
"zone" to the next, and so on. 
Referring now in more detail to FIGS. 2, 3, and 4, the hangers are 
illustrated generally as 20, and the support bars on which the hangers are 
releaseably supported are indicated generally as 22. 
The hangers 20 will be seen to comprise upper transverse hanger members 24, 
and two lower transverse spaced apart hanger members 26--26. Members 26 
are spaced apart by means of spacers 28-28-28. Generally upwardly angled 
sloping end members 30 connect the lower members 26 with the upper member 
24. 
A central vertical bracing member 32 extends from the intermediate one of 
the bracing members 28, and the upper member 24. 
The upper member 24, at each end, is upwardly angled to provide respective 
end arm portions 34--34. At the free end of each of the end arms 34, there 
is provided an abutment or knob 36--36, which could be of a variety of 
shapes, the spherical shape shown being merely both functional, and simple 
to fabricate, and maintain and clean. 
To this extent, the hangers 20 are generally similar to the hangers 
illustrated and described in the aforesaid U.S. Pat. No. 4,540,094. 
A variety of forms of product may be supported on such a hanger 20. As 
illustrated in FIG. 2, such products are indicated by the general 
reference P, and in this case are illustrated as sausages. However, this 
is without limitation, since evidently many products that may be processed 
while hanging, may be supported on such hangers. 
In accordance with the invention, as illustrated in more detail in FIG. 2, 
the hangers 20 are, in turn, supported on support rod members indicated 
generally as 22. The support rod members 22 are secured to the conveyor in 
a manner yet to be described, and comprise a pair of spaced apart parallel 
rod members 42--42, which are joined or united at spaced intervals by 
means of generally inverted U-shaped arch members 44-44-44 of semi-hoop 
shape. At each of their ends the rod members 42 are bent inwardly towards 
one another as at the bends 46, thus defining angled end portions 48 of 
rods 42, which progressively angle towards one another. Along most of 
their length, the rods 42 define a predetermined spacing therebetween 
somewhat less than the diameter of the abutments or knobs 36. Where the 
angled end portions 48 approach towards one another at each end, they 
define a narrowest spacing which is no less than the width of the end arms 
34 of the hangers 20. 
In order to support the support rod members 40 on the conveyor, they are 
provided with generally Z-shaped end brackets 50--50, which can be 
attached to the trollies 18 on the conveyor rails 14--14. 
It will thus be seen that the hangers 20 can be attached to, and released 
from, the support rod members 22 by simply sliding the arm portions 34 and 
abutments 36 out of the end portions 48 of the rods 42, for loading and 
unloading. 
It will also be observed, because of the tapering or angled arrangement of 
the end portions 48 of the rods 42, that they create what is in effect a 
"ramp" or slope, up which the abutment or knob 36 will have to ride, in 
order to free the arm 34 from the support rods. The end portions 48 thus 
function as a check means at each end of the support 22. 
This will be noted particularly from a comparison of the secions of FIG. 3 
and FIG. 4. 
This will thus have the effect of tending to hold the hangers 20 in 
position between the two ends of the rod members 22, to check inadvertent 
disengagement during processing on the conveyor. 
It will, of course, be appreciated that the invention is not confined 
solely to use on pairs of side-by-side conveyor rails 14. Thus, for 
example, other forms of conveyor are well known in which only a single 
conveyor rail is used. This has particular advantages in chambers which 
are not linear, but follow a curved or sinusoidal path. In this type of 
chamber, a single central conveyor rail is used, in a manner well known in 
the art (see, for example, U.S. Pat. No. 4,540,094 assigned to Knud 
Simonsen Industries Ltd.). In this type of conveyor rail, modified forms 
of support rod members 60 (FIG. 6) will comprise spaced-apart support rods 
62--62 held together by semi-hoops 64--64. However, they will be supported 
centrally, instead of at each end. In order to do this, a transverse 
support bar 66 is welded between two of the hoops 64, and a central 
support tongue 68 is welded to bar 66 for connection to an overhead single 
rail conveyor (not shown) such as is well known in the art. 
Furthermore, it is entirely possible that the support system may be 
applicable to conveyors wherein hangers are arranged in two tiers, one 
above the other, as shown in FIG. 7. Again, this is known in the art, 
being shown in U.S. Pat. No. 4,540,094 assigned to Knud Simonsen 
Industries Ltd. In this case, upper and lower support rod members 70a and 
70b will be secured to a generally L-shaped junction rod 72, having a 
suspension flange 74 for connection to an overhead conveyor. In this way, 
upper and lower hangers 20a and 20b can be suspended, one above the other 
but in slightly offset vertical planes, thereby carrying a somewhat 
greater quantity of produce through a given processing facility or 
chamber. 
Furthermore, as shown in FIG. 8, in some cases it is desirable to provide 
for attachment of a simple form of wooden smokehouse stick (such as the 
stick S shown in phantom in FIG. 8). Typically such sticks S were of 
generally triangular shape in section as shown. Thus, in this case, a 
modified form of hanger 80 is provided, having generally L-shaped 
downwardly dependent suspension hooks 82 secured thereto for supporting 
sticks S if required. 
In use product P, such as sausages, weiners, frankfurters or the like, may 
be manually looped around a hanger 20. One of the arms 34 may then be 
introduced between ends 48 of a support 22, with the weight of part of the 
products supported by knob 30. The hanger 20 is then pushed along its 
support 22, as shown in fig. 1. The other of the arms 34 is then slid 
between ends 48 of the support 22. The entire weight of the hanger 20, and 
the product P is then supported, by knobs 30 from its support 22. 
The foregoing is a description of a preferred embodiment of the invention 
which is given here by way of example only. The invention is not to be 
taken as limited to any of the specific features as described, but 
comprehends all such variations thereof as come within the scope of the 
appended claims.