U.S. patent number 3,780,909 [Application Number 05/168,843] was granted by the patent office on 1973-12-25 for vending machine.
This patent grant is currently assigned to Lektro-Vend Corp.. Invention is credited to William H. Callahan, Stephen I. Horvath.
United States Patent |
3,780,909 |
Callahan , et al. |
December 25, 1973 |
VENDING MACHINE
Abstract
A vending machine for vending packaged products having a product
compartment, a plurality of delivery arms located in the product
compartment, each including a movable endless chain having a
plurality of pairs of package retention elements, the elements of
each pair coacting to releasably retain an individual package to be
vended.
Inventors: |
Callahan; William H. (Aurora,
IL), Horvath; Stephen I. (Aurora, IL) |
Assignee: |
Lektro-Vend Corp. (Aurora,
IL)
|
Family
ID: |
22613161 |
Appl.
No.: |
05/168,843 |
Filed: |
August 4, 1971 |
Current U.S.
Class: |
221/85; 221/218;
D20/4 |
Current CPC
Class: |
G07F
11/58 (20130101) |
Current International
Class: |
G07F
11/58 (20060101); G07F 11/46 (20060101); G07f
011/00 () |
Field of
Search: |
;198/180,179
;221/76-86,218,219,129 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
|
|
|
|
|
11,799 |
|
Jul 1891 |
|
GB |
|
350,103 |
|
Jun 1931 |
|
GB |
|
Primary Examiner: Coleman; Samuel F.
Claims
What is claimed is:
1. In a vending machine for vending packaged products having at
least one delivery arm for retaining and dispensing packages, said
delivery arm comprising:
a. an elongated member carried by said vending machine and having
at least two laterally spaced rollers mounted thereon;
b. an endless chain mounted on said rollers and adapted to be
rotated for vending packaged products;
c. said chain defining a plurality of pairs of retention elements,
each having adjacent clamping surfaces for releasably retaining a
package to be vended and being operable to release said package
upon rotation of the chain about one of said rollers; and
d. one of said elements of each pair of retention elements
including a pivotally supported member defining said clamping
surface and biasing means urging said member in a direction toward
the adjacent clamping surface of the other element.
2. An apparatus therefore as claimed in claim 1 wherein said
elongated members therefore includes an elongated channel defining
a drive end and a delivery end, said endless chain is rotatably
supported by said channel intermediate said ends with a portion of
said pairs of retention elements underlying said channel, each of
said pairs of elements underlying said channels are disposed to
coact to releasably retain a package to be vended, and wherein said
mechanism is operable to advance said portion of said chain
including said pairs of elements underlying said channel toward
said delivery end to terminate said coaction.
3. An apparatus therefor as claimed in claim 2 wherein said channel
further defines a pair of opposed facing guide tracks extending
longitudinally thereof and wherein said portion of said chain
including said pairs of retention elements underlying said channel
are slidably supported within said guide tracks.
4. An apparatus therefor as claimed in claim 2 wherein said channel
defines at least one stripping surface adjacent said delivery end
engageable with said package to be vended upon advancement of said
chain toward said delivery end.
5. An apparatus therefor as claimed in claim 1 wherein the elements
of each said pairs of elements are formed upon adjacent links of
said chain.
6. In a vending machine for vending packaged products, an improved
dispensing unit comprising:
a. an elongated member rotatably mounting an endless chain;
b. said endless chain having means for defining opposing pairs of
retention elements with coacting surfaces for releasably retaining
a packaged product and adapted to terminate said coaction to effect
dispensing of said packaged product;
c. one of said surfaces being formed by a resiliently biased member
carried by an associated retention element and urged against the
coacting surface of the other element; and
d. said surface formed by said biased member forming an outwardly
opening angle with the other surface for guiding said packages into
said retention elements and for facilitating the reloading of the
dispensing units with packages to be dispensed.
Description
BACKGROUND OF THE INVENTION
This invention relates to coin operated vending machines for
vending of packaged products. More particularly, it relates to a
vending machine for packaged products having product compartments
in which the products are releasably retained upon a plurality of
delivery arms.
One important factor in successful vending of products through coin
operated machines is that of attraction of prospective purchasers
to the product. This is especially true in the case of snack
products, such as potato chips, nuts, pretzels, candy or the like,
which are usually purchased on impulse or to compliment the
purchase of a beverage. It is, therefore, important to make the
customer aware of the availability of the product. If successful,
sales of such products can be significantly increased.
Initially, snack products were vended through pastry or candy bar
vending machines. However, these methods failed to adequately
inform the purchaser of the availability of the product and sales
volumes were disappointing.
More recently, attempts have been made to provide vending machines
which take advantage of sales appeal of visual display of the
products. It is well recognized that an effective machine of this
type would not only solve the problem of vending snack foods, but
would find wide application in the vending of pre-packaged
consumable articles not normally sold through this media. For
example, hardware items such as nuts, bolts, screws, nails and the
like, could readily be vended in this manner. Similarly, toilet
articles such as combs, razors, toothbrushes and the like, could
also be effectively distributed.
The early attempts at designing a vending machine to suit this need
did accomplish the objective of attractive display of the packaged
products to increase consumer appeal. This was done through
utilization of a product compartment completely visible from the
exterior of the machine in which the products were retained upon a
plurality of delivery arms. In this way, the entire compartment of
the machine was visible to the purchaser to take full advantage of
the impulse reaction.
However, the vending machines heretofore developed for this purpose
have been both conceptually and technologically deficient. Each has
included inherent design disadvantages which rendered it
unsatisfactory as the ultimate solution to the problem.
One of the earliest developments in this field was a machine which
utilized delivery arms in the form of horizontally disposed
rotatable spiral shafts. The packaged products were suspended upon
each shaft in spaced relation along the spiral. Energization of the
machine by deposit of proper coinage caused one shaft to rotate for
a predetermined period. This advanced the packaged product toward
the open delivery end. During each cycle the package nearest the
open delivery end of the shaft rotated, would drop off, and fall to
a vending area accessible to the purchaser.
Utilization of this form of machine was possible only if the
packages vended were previously provided with an aperture to
receive the spiral shaft. The procedures necessary to provide such
an aperture were both time-consuming and cumbersome. Further, if
the packages were not of sufficient strength, they could be easily
dislodged from the spirial shaft resulting in loss of the article
without revenue.
In addition, the package loading arrangement was not inherently a
"first in, first out, system". Articles first placed in the machine
were not necessarily those first delivered to the consumer. It was
necessary to remove the packages remaining in the machine when
loading and to then place them nearest the open delivery ends of
the spiral shafts. First in, first out loading therefore depended
upon the conscious effort of the individual loading the machine.
Thus, a strong possiblity existed for the later vending of stale
goods, an undesirable sales factor.
Other attempts to develop a satisfactory machine that optimized
packaged product vending have included delivery arms having endless
chains supported upon a pair of sprockets and provided with a
plurality of retention hooks. Activation of the machine would cause
the chain of one delivery arm to move, advancing the hooks toward
the delivery end of the arm. The hook nearest the end would travel
about the sprocket and move from a generally vertical retention
position to a generally horizontal delivery position, allowing the
package to fall from the hook.
This system also required pre-operation to be performed upon the
bags or packages vended. Also, this arrangement was particularly
susceptible to vandalism. Vigorous shaking of the machine would
result in dislodgement of the packages from the hooks and would
cause them to fall to the vending area accessible from the exterior
of the machine. Attempts at rectifying this particular failing have
proven to be cumbersome, and have detracted significantly from the
efficient operation of the hook arrangement.
Accordingly, it is the principal object of the present invention to
provide an improved form of vending machine for packaged products
which optimizes the visual appeal of the product to be vended. It
is a further object to provide such a machine which inherently
provides for a first in, first out, distribution of the packaged
product, and which is capable of vending packages which do not
require special pre-loading preparation.
SUMMARY OF THE INVENTION
Very generally, the present invention is directed to a vending
machine for packaged products having a product compartment, and a
plurality of product delivery arms disposed in the compartment.
Each arm includes a movable endless chain having a plurality of
pairs of package retention elements which coact to releasably
retain an individual package to be vended. Movement of a chain upon
activation of the machine causes one pair of the package retention
elements to advance and release the retained package for delivery
to the consumer.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a vending machine embodying the
principles of the present invention.
FIG. 2 is a side elevational view, partly in section, of the
vending machine of FIG. 1.
FIG. 3 is a fragmentary sectional view on a slightly enlarged scale
of a delivery arm of the vending machine of FIGS. 1 and 2.
FIG. 4 is an end view of the delivery arm of FIG. 3.
FIG. 5 is a fragmentary view, partially in section, of the delivery
arm of FIG. 2, showing the apparatus in a slightly different
position of operation.
DETAILED DESCRIPTION
Referring now to the drawings, there is illustrated a vending
machine generally designated 10, which is illustrative of the
principles of the present invention.
As best seen in FIGS. 1 and 2, the vending machine 10 includes a
housing 12 defining a large product compartment 14 in which
packaged products 16 are retained for delivery to purchasers. The
housing further includes a vending compartment 18 disposed
immediately below the product compartment and accessible from the
exterior of the machine.
The machine 10 is electrically operated and includes a coin
receiving mechanism 22 and a selector switch arrangement 24.
Deposit of proper coinage and activation of the selector switch
operates through well known electrical circuitry to effect delivery
of a packaged product to the purchaser.
The vending compartment 18 is in communication with the product
compartment 14 through an opening 20. Vended packages drop through
this opening into the vending compartment.
The vending compartment 18 is also open to the exterior of the
machine through an opening 26. An access door 28 pivotally
supported upon housing 12 normally closes the opening 26.
A vended product delivered to the compartment 18 is retrieved by
the purchaser by opening the door 28 and reaching into the vending
compartment. The door 28 includes a closure plate 30 which moves
with the door 28. Opening of the door causes closure of opening 20
which normally communicates with the product compartment 14. In
this manner, pilferage of the product compartment by access through
the vending compartment is prevented.
The machine 10 is provided with a hinged access door 32 which is
normally locked and which defines the front panel of the machine.
This door provides access to the product compartment for loading of
the packaged articles and other maintenance needs.
The door 34 includes a transparent panel 36 formed of glass or
other suitable material. This panel provides full view of the
product compartment 14 from the exterior of the machine. In this
manner, the products 16 to be vended are displayed to the purchaser
to take full advantage of visual appeal.
The products 16 are retained within the product compartment 14 upon
a plurality of generally parallel, horizontally disposed delivery
arms 38 which extend toward the clear panel 36. The packages to be
vended hang downwardly from the arms generally traversely of the
arms and are presented for full view through the clear panel.
The arms 38 include flanges 40 which are secured to the portion of
the housing 12 defining a rear wall 41 of the product compartment
14. The flanges 40 may be provided with slotted mounting holes to
allow vertical adjustment of the spacing between arms to
accommodate differences in sizes of the packaged products.
Each of the arms 38 includes a rigid channel 42 which forms the
main structural element of the arm. The channel 42 extends from the
flanges 40 toward the panel 36 terminating in an open delivery end
44. It defines a pair of generally horizontal stripping surfaces 46
adjacent the end 44. The interior of each channel includes a pair
of spaced apart facing guide tracks 48 best seen in FIG. 4,
extending longitudinally of the channel along its lowermost
edge.
In accordance with the present invention, each of the delivery arms
38 includes a package retention and delivery mechanism generally
designated 50. The mechanisms 50 are effective to releasably retain
the packaged products 16 on display to prospective customers, and
are operable to vend a given article upon operation of the
machine.
The mechanism 50 of each delivery arm 38 includes a drive sprocket
52, a guide sprocket 54, and an endless drive chain 56 extending
about the sprockets. The drive sprockets 52 are rotatably supported
by the channels 42 adjacent the flange 40, and the guide sprockets
54 are rotatably supported by the channels 42 adjacent the open
delivery ends 44. The chain 56 of each package retention and
delivery mechanism 50 thus defines two horizontally disposed
lengths which extend between the sprockets 52 and 54. The lowermost
length of each chain is disposed within the guide track 48 of the
associated delivery arm 38.
An electric drive motor 58 is operatively associated with each
delivery arm 38. The motors 58 are each secured to a channel 42
adjacent the flange 40, and are connected in driving association
with the associated drive sprocket 52.
The electrical circuitry of the machine is adapted for energization
of any one of the motors upon insertion of proper coinage into the
mechanism 22. The particular motor energized is determined by
selection of one of the selector switches of the selector switch
arrangement 24. Energization of one of the motors is effective to
rotate the associated drive sprocket 52 for a predetermined period
or cycle. The sprocket is rotated in a direction to cause the
longitudinally extending portion of the chain 56 disposed in the
guide track 48 to advance a predetermined distance toward the open
delivery end 44 of the delivery arm 38 as indicated by the arrow in
FIG. 3. This causes the chain to travel about the guide sprocket
54.
As best seen in FIG. 3, the chain of each retention and delivery
mechanism 50 includes a plurality of rigid links connected by pins
59 to define pluralities of pairs of retention elements 60. The
elements of each pair of retention elements 60 are formed by
adjacent links of the chain 56. Each pair includes an anvil member
62 and a wedge member 64.
When the links of the chain 56 are disposed within the guide tracks
48, the associated pairs of retention elements underlying the guide
track are in the retention position. In this position, the elements
of each pair coact, as shown in FIG. 3, to releasably retain a
package to be vended. Advancement of the links about the guide
sprocket 54 upon energization of the drive motor 58 is effective to
terminate the coaction as shown in FIG. 5, and the package is
delivered to the vending compartment 18.
Anvil member 62 defines a clamping or retention surface 66
extending transversely of the longitudinal axis of the delivery
arm. The wedge member 64 of each pair of elements 60 defines a
clamping or locking surface 68 disposed in opposing facing relation
to the clamping or retention surface 66 of the associated element
62. These clamping surfaces are positionable in closely spaced
facing relation to releasably wedge or clamp the package to be
vended. This occurs when the pairs of elements 60 are in the
retention position underlying guide tracks 48.
Advancement of the chain 56 in a direction toward the open delivery
end 44 of the delivery arm causes the wedge member 64 to pivot the
locking surface 68 away from the clamping surface 66 to release the
clamping action of the pair 60 and vend the packaged article.
It should be noted that the clamping action provided by the
retention pairs 60 to releasably retain the article to be vended is
effective to grasp or clamp packaged material without requiring
pre-operations to be performed upon the package. The expense of
pre-loading operations is eliminated and loading of the packaged
product is simplified.
In the illustrated embodiment, the locking surface 68 of each pair
of elements 60 is defined by pivotally supported member 70 urged in
a direction toward the surface 66 of the associated anvil member 62
by a spring 71. In the retention position, that is when the links
of the chain 56 forming the pairs of elements 60 are slidably
supported within the guide track 48, the pivotally supported member
70 is biased against the clamping surface 66 of the associated
anvil member 62. The member 70 is pivoted in a manner such that
when the pairs of elements 60 are in the retention position, the
member 70 is urged toward clamping surface 64 by gravity. The
spring member 71 compliments this action to increase the clamping
effectiveness.
To increase the locking capabilities of the pairs of elements, each
pivotally supported member 70 is formed to define a plurality of
prongs 72, shown in FIG. 4, and the anvil members 62 are formed to
define a step 74 and a plurality of notches 76, shown in FIGS. 4
and 5, aligned with the prongs 72. The prongs 72 engage the
packages 16 and urge the packages against the steps 74 and into the
notches 76. The prongs may actually pierce the package to provide
positive retention. This arrangement renders the retention members
effective to retain the product packages upon the arm even without
the assistance provided by spring 70. Also pilferage is prevented
since the packages cannot be dislodged by shaking the machine.
It is contemplated that a variety of forms of pairs of retention
elements 60 may be provided which would adequately effect clamping
or wedging engagement of packages to be vended. For example, the
surfaces 66 and 68 could be formed such that they are extremely
closely spaced when the pairs of elements 60 are in the retention
position underlying the guide tracks 48. The mere compression of
the package material between the surfaces would then provide the
retention force. Additionally, to improve the effectiveness of
closely spaced surfaces 66 and 68, the surfaces could be knurled,
tooth-shaped or serpentine. Each arrangement would provide the
necessary coaction between the elements 62 and 64 of each pair of
elements releasably retaining the packaged product in position upon
the delivery arms 38.
As previously pointed out, the pairs of retention elements 60
forming the links of the chain 56 which are disposed within the
guide tracks 48 are positioned for coaction and consequent
retention of the packages 16. In the illustrated embodiment, the
pivotally supported members 70 provide an additional advantage in
allowing simple loading of each pair of elements operable even when
the pairs of elements are in this retention position. The packages
to be retained are simply urged upwardly between the anvil member
62 and the pivotally supported member 70 defining the locking
surface 68. The spring 71 is displaced sufficiently to accommodate
entry of the package between the retention surface 66 and the
locking surface 68. The spring 71 then urges the pivotally
supported member toward clamping surface 66 of anvil member 62. The
clamping action provided by coaction of the retention surface 66
and the locking surface 68 retains the package 16. The coaction
between the prongs 72 formed upon pivotally supported member 70 and
the step 74 and notches 76 formed upon anvil member 62 firmly lock
the packages in place until the pairs of elements 60 are advanced
to the delivery end of the arm 38.
Selective energization of one of the delivery mechanisms 50
associated with one of the delivery arms 38 is effective to cause
advancement of the chain 56 a predetermined distance. This causes
the pair of retention members 60 nearest the open delivery end 44
of the delivery arm to travel about the guide sprocket 54. This
movement, as best seen in FIG. 5, results in separation of the
retention surface 66 and locking surface 68, allowing the package
16 to fall to the vending compartment 14.
In some cases, the packages 16 may adhere to prongs 72 and fail to
fall to the delivery compartment 18 upon separation of the elements
60. Continued rotation of the elements 60 about the sprocket 54
causes the package to contact stripping surfaces 46 formed upon the
delivery arms 38. This provides for positive separation of the
package from the retention elements 60.
It should be noted that energization of a retention and delivery
mechanism 50 causes advancement of all of the links disposed within
the guide tracks 48 toward the open delivery end 44 of the delivery
arms 38. Simultaneously, emptied retention element pairs return to
the guide tracks 48 adjacent the flange 40. Thus, products placed
into the machine continually advance toward the delivery ends 44 of
the delivery arms 38, and a first-in, first-out vending is
inherently provided.
As can be seen, an improved form of packaged product vending
machine has been provided which optimizes visual display of the
products to be vended, inherently provides a first-in, first-out
system of vending, and requires no pre-loading operations to be
performed upon the packages to be vended.
Various features of the invention have been particularly shown and
described. It must be understood, however, that various
modifications may be made without departing from the scope of the
invention as defined by the appended claims.
* * * * *