U.S. patent number 3,915,785 [Application Number 05/446,921] was granted by the patent office on 1975-10-28 for labelling machine.
This patent grant is currently assigned to Grapha-Holding AG. Invention is credited to Hans Muller.
United States Patent |
3,915,785 |
Muller |
October 28, 1975 |
Labelling machine
Abstract
In a labelling machine connected labels in form of a strip
having respective series of labels each arranged according to
different postal codes and each having a first label provided with
a characterizing mark, are advanced to a cutting station where the
labels are cut apart, and thereupon the labels are supplied to an
applying station at which they are applied to respective objects.
An arrangement is provided for detecting the presence or absence of
the characterizing mark on the respective labels upstream of the
cutting station, and a further arrangement distinguishes the object
to which a label having been identified as being provided with the
characterizing mark, has been applied, from the remaining objects
carrying the other labels of the series with which the label having
the characterizing mark is associated.
Inventors: |
Muller; Hans (Zofingen,
CH) |
Assignee: |
Grapha-Holding AG (Hergiswil,
CH)
|
Family
ID: |
4256329 |
Appl.
No.: |
05/446,921 |
Filed: |
February 28, 1974 |
Foreign Application Priority Data
Current U.S.
Class: |
156/351;
156/DIG.46; 156/521; 156/355; 156/566 |
Current CPC
Class: |
B65C
9/183 (20130101); B65C 9/1803 (20130101); B65C
9/44 (20130101); B07C 3/00 (20130101); B07C
3/18 (20130101); Y10T 156/1768 (20150115); Y10T
156/1339 (20150115) |
Current International
Class: |
B07C
3/00 (20060101); B65C 9/44 (20060101); B07C
3/18 (20060101); B65C 9/00 (20060101); B65C
9/08 (20060101); B65C 9/18 (20060101); B32B
031/00 (); B65C 009/44 () |
Field of
Search: |
;156/351,353-355,361-364,510,521,566,DIG.45,DIG.46 ;235/61.12R
;209/111.7,DIG.1 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Van Horn; Charles E.
Assistant Examiner: Simmons; David A.
Attorney, Agent or Firm: Striker; Michael S.
Claims
What is claimed as new and desired to be protected by Letters
Patent is:
1. In a labelling machine in which connected labels arranged on a
strip in form of columns which extend longitudinally of the strip
and are adjacent one another in direction transverse to the strip,
and in which said labels are arranged in series according to
different postal codes and of which the first label of each series
carries a characterizing mark, are advanced in the longitudinal
direction of said strip to a cutting station where the labels are
cut apart, and are thereupon supplied to an applying station at
which the successive labels are applied to respective objects, the
improvement comprising first means comprising a plurality of
detectors each associated with one of said columns for detecting
the presence of said characterizing mark on a respective first
label of a series upstream of said cutting station, each of said
detectors being operative for producing a binary signal indicative
of the presence or absence of said mark on the respective label;
second means for distinguishing between the objects carrying the
thus identified first label from other objects carrying the
remaining labels of the respective series, control means for
supplying said binary signals to said second means, said control
means comprising a counter for counting a predetermined number of
objects having labels of a series affixed thereto for operating
said second means when said number has been counted; and selecting
means for preselecting the predetermined number to be counted.
2. A machine as defined in claim 1, and further comprising means
for suppressing a signal to said second means from a series supply
of the final binary signals which are indicative of the absence of
said mark when the number of said final binary signals in said
series is smaller than the predetermined number selected by said
selecting means.
3. A machine as defined in claim 1, further comprising means for
advancing said connected labels stepwise toward said cutting
station.
4. A machine as defined in claim 3; and further comprising means
for activating said first means only intermediate the stepwise
advancement of the connected labels.
5. A labelling machine for use with a strip of connected labels on
which the labels are arranged in form of columns which extend
longitudinally of said strip and adjacent one another in direction
transverse of said strip and in which the labels are arranged in
series according to different postal codes with the first label of
each series carrying a characterizing mark, said machine comprising
transporting means for stepwise transporting said strip in
longitudinal direction; first cutting means downstream of the
transporting means for cutting said strip in longitudinal direction
to separate said columns from each other; second cutting means
downstream of said first cutting means for cutting said columns in
transverse direction for producing during each operation a row of
separated labels; first conveyor means for receiving said row of
separated labels and for transporting said separated labels in the
direction of said row; second conveyor means below and
substantially parallel to said first conveyor means for
transporting a plurality of objects to which labels are to be
applied; label applying means at one end of said first conveyor
means for applying labels from said row seriatum to said object
transported on said second conveyor means; third conveyor means at
one end of said second conveyor means for transporting said objects
with the labels applied thereto in a direction transverse to the
direction at which said objects are transported by said second
conveyor means; a single motor and transmission means for operating
said first, said second and said third conveyor means, said
transporting means and said first and second cutting means; first
means including a plurality of detectors, one for each column,
arranged upstream of said first cutting means for detecting the
presence of said characterizing mark on respective first label of a
series, each of said detectors being operated for producing a
binary signal indicative of the presence or absence of said mark on
the respective label; second means for distinguishing between the
objects carrying the thus identified first label from other objects
carrying the remaining labels of the respective series, said second
means comprising abutment means located on said third conveyor
means shiftable in a direction transverse to the latter and a
solenoid for shifting said abutment means in said transverse
direction; control means for supplying said binary signals to said
second means, said control means comprising a counter for counting
a predetermined number of objects having labels of a series affixed
thereto for operating said solenoid to shift said abutment means in
transverse direction when said predetermined number has been
counted; selecting means cooperating with said counter for
preselecting the predetermined number to be counted; and means for
suppressing a signal to said second means from a series supply of
the final binary signals which are indicative of the absence of
said mark when the number of said final binary signals is smaller
than the number selected by said selecting means.
6. A machine as defined in claim 5, wherein said transporting means
comprises a roller, and wherein said transmission means comprises
drive shaft means connected to said motor, a crank shaft, a
step-down transmission between said drive shaft means and said
crank shaft for reducing the speed of said crank shaft at a ratio
of 1 divided by the number of columns, and ratchet means between
said crank shaft and said roller for stepwise turning the latter
each time all the labels on said first conveyor means have been
applied to said objects on said second conveyor means.
Description
BACKGROUND OF THE INVENTION
The present invention relates generally to a labelling machine, and
more particularly to a labelling machine in which labelled objects
are distinguished from other labelled objects in dependence upon
different postal codes.
Labelling machines per se, wherein labels are applied to various
objects, for instance magazines, letters or the like, are already
known per se. (See Swiss Pat. No. 497927 corresponding to U.S.
application Ser. No. 460796 from June 2, 1965). As a general rule,
the labels are supplied in such machines in form of elongated
strips wherein the labels are all connected, for instance by being
printed upon the strip. In order to facilitate subsequent handling
of labelled objects, and particularly to assure that all labelled
objects which are marked with an identical postal code will be
packed together or otherwise kept together for mailing, the labels
carrying the same postal code are provided in form of connected
series on the strip of labels. The first or the last label of such
a series is provided with a characterizing mark so that when this
label is applied to an object, it should be possible to identify
the object as the first or last in a series of objects which belong
together, all being intended to be sent to postal addresses having
the same postal code.
For this purpose, the known labelling machines are provided with
detecting arrangements which detect the presence or absence of
these characterizing marks. However, these detecting arrangements
are located downstream of the cutting station at which the machine
cuts apart the strip so as to separate the individual labels from
one another. This means that by the time the labels reach the
detecting arrangement, they are all loose and separated from one
another. This has certain disadvantages, including the fact that
labels might become lost, or might shift around and become
overlapped, thereby making it difficult or impossible to properly
detect the presence of the characterizing mark. Again, at the very
least, however, it is necessary to make the characterizing mark
rather large, to assure that it can be properly detected even
though the label may have shifted out of its intended position.
This means that the labels must be unnecessarily large in order to
be able to accommodate such a large characterizing mark, and even
this does not always avoid the other disadvantages which have been
outlined.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an
improved labelling machine which is not possessed of the
aforementioned disadvantages.
More particularly, it is an object of the invention to provide such
an improved labelling machine in which the characterizing mark will
always be detected with great reliability, even if the
characterizing mark is relatively small.
Another object of the invention is to provide such a labelling
machine which is capable of clearly distinguishing an object
carrying a label having the characterizing mark, from other objects
carrying the remaining labels of the series preceding and/or
following the label having the characterizing mark.
In keeping with the above objects, and with others which will
become apparent hereafter, one feature of the invention resides in
a labelling machine in which connected labels which are arranged in
series according to different postal codes and of which the first
label in each series carries a characterizing mark, are advanced to
a cutting station where the labels are cut apart, and are thereupon
supplied to an applying station at which the successive labels are
applied to respective objects. In such a machine the present
invention provides an improvement according to which first means is
provided for detecting the presence of the characterizing mark on a
respective first label of a series upstream of the cutting station,
and a second means for distinguishing of the object carrying the
thus-identified first label from other objects carrying the
remaining labels of the respective series.
The novel features which are considered as characteristic for the
invention are set forth in particular in the appended claims. The
invention itself, however, both as to its construction and its
method of operation, together with additional objects and
advantages thereof, will be best understood from the following
description of specific embodiments when read in connection with
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a perspective view illustrating the essential details of
a labelling machine according to the present invention;
FIG. 2 is a fragmentary bottom-plan view of a strip of labels prior
to cutting-apart; and
FIG. 3 is a circuit diagram illustrating the electrical controls
for the operation of the part of FIG. 1 which embodies the present
invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS:
Referring firstly to FIG. 1 it will be seen that 1 have illustrated
the parts of a labelling machine which are important for an
understanding of the invention. Other parts which are not necessary
for an understanding of the invention, and entirely conventional
and within the skill of the art, have been omitted. Reference
numeral 1 identifies labels which are to be individually affixed to
objects 3, such as magazines, envelopes or the like that are
advanced individually on a conveyor 2. The conveyor 2 is driven via
a motor 4 by a shaft 5. Each complete rotation of the shaft 5,
which will hereafter be identified as an operating cycle, causes a
new object 3 to be supplied to an applying station AD where at a
label 1 is applied to the object 3 in a manner still to be
described.
A photoelectric cell 6 is provided which supervises the presence or
absence of objects 3 at the station AD. The operation of such
photoelectric cells is well known in the art and requires no
detailed discussion, other than to point out that if the
photoelectric cell 6 determines that there is no object 3 located
at the station AD, it will operate a clutch 7 (also known from the
art) which will interrupt for that particular operating cycle the
supply of a label to the station AD since there is no object 3
present at the station to which the label could be affixed.
After the labels 1 have been affixed to the individual objects 3,
each object 3 with the affixed label travels on the conveyor 2 from
the station AD by a distance L to the terminal or discharge end of
the conveyor 2. Adjacent this discharge end of the conveyor 2
travels a further conveyor 8 which advances transversely of the
elongation of the conveyor 2 and onto which each of the objects 3
is deposited as it is discharged from the discharge end of the
conveyor 2. The conveyor 8 is driven by a shaft 10 which in turn
receives motion via a stepdown drive 11 from the shaft 5. It is
important that the conveyor 8 operate at a lesser speed than the
conveyor 2, so that the objects 3 which are deposited on the
conveyor 2 will form an overlapping stream of objects, that is as
seen in the direction of advancement of the conveyor 8 (compare the
arrow associated with it) the leading end of each object 3 overlies
the trailing end of the preceding object 3.
As each object 3 is discharged from the discharge end of the
conveyor 2 it is pushed or thrown against an abutment 9 located
opposite the discharge end of the conveyor 2; the abutment 9 can be
moved between the full-line position and the broken-line position
shown in FIG. 1, being connected with a solenoid 12 which,
depending upon its state of energization, moves the abutment 9
between the aforementioned two positions. If the abutment 9 is in
the full-line position, then the various deposited objects 3 will
have on the conveyor 8 the orientation which is shown for all but
one of them, namely the object 3'. In order to obtain this other
orientation of the object 3', wherein the object 3' conspicuously
extends laterally of the stream of overlapping objects 3, the
abutment 9 is retracted to the broken line position so that the
next object 3 which is discharged onto the conveyor 8 after the
abutment 9 has been so retracted, will assume the orientation shown
with respect to the obejct 3'. Thereupon, the abutment 9 is
returned to its full line position. This arrangement makes it
possible to provide two types of indications, namely to use the
laterally displaced object 3' to mark the beginning of a series of
objects the labels of which are all marked with identical postal
codes, and it is also possible to use the object 3' to mark the
beginning of a series of objects which are to be joined in a single
bundle, stack or the like.
The labels 1 are supplied in form of a continuous strip 14 which is
provided with marginal perforations 15 and which is folded to form
a stack 21. In FIG. 1 the labels are printed on the downwardly
facing side of the strip 14, which is the side that is shown
fragmentarily in a bottom-plan view of FIG. 2. It will be seen from
FIG. 2 that the strip 14 is provided with a plurality of columns 16
of labels, these columns all extending longitudinally of the strip
14 and being arranged laterally adjacent one another across the
width of the strip. The latter is further subdivided into a
plurality of transversely extending rows 17, the width of the rows
17 corresponding to the height 18 of a respective label 1. In the
example shown in FIG. 2, the letter groups A-F designate address
groups or series having the same postal codes. In other words, all
labels of the series A will have the same postal code, all labels
of the series B will have the same postal code, and so on.
The machine of FIG. 1 has a guide roller 20 over which the strip 14
is withdrawn from the stack 22 by means of a transport roller 19
which has (non-illustrated) teeth engaging in the perforations 15
of the strip to draw the latter off the stack 21. Intermediate the
rollers 19 and 20 the strip passes over or past an optical reading
arrangement 22 having six reading heads or detectors 23 each of
which is associated with one of the columns 16. A non-illustrated
set screw is advantageously provided by means of which the entire
arrangement 22 can be shifted in the direction if its associated
double-headed arrow, to provide a fine adjustment. After passing
the arrangement 22 and the transport roller 19, the strip 14
travels beneath a cutting roller 24 which cuts it along the lines
subdividing the individual columns 16. Subsequently, the strip then
travels under a cutting blade 25 which cuts it along the lines
subdividing the individual rows 17, so that now the labels 1 are
all separated from one another. The cutting by means of which the
labels are separated along the columns 16 takes place along the
line 26, whereas the cutting by means of which the rows 17 are
separated takes place along the lines 27. This means that each time
the blade 25 effects a cut along one of the lines 27, six separate
labels 1' will be available on the conveyor belt 28 which is
located immediately downstream of the blade 25.
The labels 1' then travel on the belt 28 beneath a glue applying
roller 29 and continue to travel so as to be applied to the
successive objects 3 which travel on the conveyor 2 through the
applying station AD.
The conveyor 28 is driven by a shaft 30 which is driven in turn by
a shaft 31, the clutch 7 and the shaft 32 from the shaft 5. This
means that with each operating cycle (i.e. complete rotation) of
the shaft 5, the conveyor 28 will travel a further increment in the
direction of the indicated arrow to apply another one of the six
labels 1' to that particular object 3 that is located at the
station AD. This continues until all of the labels 1' on the
conveyor 28 have been used up, that is applied to the respective
objects 3. During this time the strip 14 is stationary, that is the
strip 14 does not advance towards the blade 25 while the labels 1'
on the conveyor 28 are being used up.
The transport roller 19, the cutting roller 24 and the blade 25 are
all operated by a crank shaft 33 which in turn is driven by the
shaft 30 via a stepdown drive 34. The stepdown ratio provided by
the drive 34 is 1:6 in the illustrated embodiment, that is in the
ratio of 1 to the number of columns 16 that are present on the
strip 14. Since it is evident that the number of columns may be
changed, the stepdown ratio would change accordingly. The stepping
down is necessary since the crank shaft 33 must perform only one
turn during the time period during which the shaft 30 performs 6
turns, in order to assure that all six of the labels 1' on the
conveyor 28 will be applied to six successive ones of the objects
3.
Since the strip 14 is incrementally advanced, a drive must be
provided for it which, is here illustrated as a ratchet drive using
a ratchet wheel 36 that is fixedly mounted on the shaft 35 of the
transport roller 19, and a disc turnable on the shaft and provided
with the pawl 38. The disc 37 is further provided with an eccentric
pin (not visible in the drawing) which is engaged by a crank rod 39
that can be adjusted in its length in conventional manner and which
during each turn of the crank shaft 33 will displace the disc 37
through a predetermined angle, thus turning the ratchet wheel 36
through the same angular increment, since the pawl 38 engages the
wheel 36.
FIG. 3 shows the control which is associated with the apparatus of
FIG. 1 and which assures the lateral displacement of certain of the
labelled objects (namely the objects 3') for the purpose of
identifying those of the objects which are to be combined in a
package and all of which bear labels having the same postal code.
The control arrangement comprises a cam disc 40 mounted on the
shaft 33 and cooperating with a switch 41, a cam disc 42 mounted on
the shaft 30 and cooperating with a switch 43, and a cam disc 44
mounted on the shaft 5 and cooperating with a switch 45.
FIG. 3 shows the six reading heads or detectors 23. The binary
information received by them is transferred via respectively
associated amplifiers 46 to a first shift register SR1 which is
ordered to "read" the labels of a respective row 17 for the
characterizing mark at the time when the strip 14 is stationary and
a row 17 is located above the detectors 23. From the time of
"reading" of the address on a label to its transferrence from the
conveyor 2 (in a condition in which it is already applied to an
object 3) to the conveyor 8 the shaft 30 will always perform the
same number n of revolutions or operating cycles. This number n of
revolutions is composed of the number u of revolutions which are
necessary to shift the label after reading onto the belt 28, the
number v which is required to transport the labels on the conveyor
28 to the station AD, and the number w of revolutions which is
required for transporting the label affixed to a respective object
3 along the distance L to the output end of the conveyor 2. Thus,
the number n of revolutions = u+v+w. During the number n of
revolutions the binary information is to be supplied to the
solenoid 12 to control the operation of the same. For this purpose,
the first shift register SR1 is controlled by the cam disc 40 via
the switch 41, so that the binary information stored in it is
successively supplied during each revolution of the shaft 30 to the
second shift register SR2. Since the beginning of a series of
labels having the same postal code is characterized by the
characterizing mark M which is printed on the first of these
labels, the information which is picked up in form of a binary
signal by the heads 23 will be a yea or positive signal for the
first label of the series, whereas for all other labels of the same
series it will be a no or negative signal. The cam disc 42
cooperates with the switch 43 to supply the first shift register
SR1 with the order to transfer the binary information stored in it
successively to the second shift register SR2. It further supplies
a signal to a fourth shift register SR4 which controls the
operation of the solonoid 12 and which receives its own transfer
signals covering the supplying of information to the solenoid 12,
from the cam disc 44 and the switch 43. if a yes signal is present,
the shift register SR4 energizes the solenoid 12 for the duration
of one revolution. The number of storage locations in the shift
registers SR1, SR2 and SR4 is so selected that a yes signal or
information of the first reading head 23 (which is the one at the
right side of FIG. 3) will trigger a corresponding signal which is
issued from the shift register SR4 to the solenoid 12 after n
revolutions have been completed. The third shift register SR3 is
connected with the second shift register SR2 via a contact rail 47
and a sliding contact 48. The sliding contact 48 makes it possible
to select at will the outputs of the terminal storage locations of
the shift register SR2, and to thereby vary the number n of
revolutions which must be completed between the reading of an item
of information and an energizing signal to the solenoid 12. When
this is done, the number of revolutions u is changed, because this
depends upon the height 18 of the labels. The slide contact 48
therefore permits the control to be roughly accommodated in stages
to the height of the address labels 18, whereas the fine adjustment
is carried out, as previously mentioned, by the non-illustrated set
screw for the device 22.
A counter arrangement is provided, employing a preselector switch
49 and a counter 50. The purpose of this arrangement is to make it
possible for the operator to select the number of objects 3 which
are to be included in a particular package or stack, for instance
10 per package. With each signal generated by the switch 43 the
counter 50 counts down from the preselected number, for instance
10, to zero; on reaching zero, it will issue a signal to NAND-gate
51. If for instance a minimum number (such as 5) of object 3 is
required for a package, then any remaining 1-4 objects are supplied
to the last package of 10. In other words, if 10 objects 3 are
desired per package, but the minimum number per package that is
acceptable is five, and if after making a number of packages (each
containing ten objects) from the objects of a series, somewhere
between one and four objects of the series are left, then these
last objects numbering between one and four will be added to the
last package having normally 10 objects, so that this last package
will have between eleven and fourteen objects. To make this
possible, the third shift register SR3 is provided which has as
many storage locations or stages as the minimum number of objects
that is acceptable per package. The last storage location or stage
of the shift register SR3 is connected via a nut NOT element or
inverter 52 with a NAND-gate 53. The other stages of the third
shift register SR3 are connected with the NAND-gate 53 via a
NOR-gate 54.
At the beginning of each series of labels constituting part of the
strip 14 and all having the same postal code there will always be
located one label having the characterizing mark M which is
detected by the device 22. That being so, the reading head or
detector 23 which detects this mark will produce a yes signal which
indicates the beginning of a new label series having a new postal
code. Assuming that before the beginning of a new label series and
after the last set of previous labels for ten objects 3 has been
withdrawn via the roller 24 and the blade 25, but four labels of
the previous series are still present on the strip, then the
elements 54, 52, 51 and 53 suppress the signal from the counter 50
and supply a control signal to the shift register SR4 only after
four further revolutions have taken place. This control signal is
subsequently supplied after a further delay controlled by the
signals eminating from the cam disc 44, to the solenoid 12. A
contact rail 55 having a sliding contact 56 is located intermediate
the fourth shift register SR4 and the solenoid 12; the purpose of
the contact 56 is to make it possible to select the outputs of the
terminal stages of the shift register SR4. Depending upon the
setting of the contact 56 this means that the operation of the
control arrangement can be accommodated to the length L, that is
the distance which must be traversed by the labelled objects 3
between the station AD and the terminal discharge end of the
conveyor 2.
The operation of the device will now be described with reference to
the illustrated example. As FIG. 2 shows, the strip 14 carries 22
address labels having the postal code C. The characterizing mark M
which designates the beginning of this series of labels is read in
FIGS. 1 and 2 by the second detector 23 from the left, which is the
second detector 23 from the right in FIG. 3. This detector will
produce a yes signal which is applied via the first shift register
SR1 to the second shift register SR2 and from there to the third
shift register SR3. From the register SR3 it travels via the
element 54 and element 52 to the gate 53. During this time period
the strip 14 is advanced sufficiently for the address labels with
the postal code C to be cut apart and sequentially pasted onto the
objects 3 which travel on the conveyor 2. These 22 objects 3 which
are thus labelled with labels having the identical postal code C
are, let it be assumed, to be bundled in a package of 10 objects
and a further package of twelve objects. This means that the
abutment 9 must distinguish (by permitting a lateral displacement)
the first object carrying one of the labels having the C postal
code, the eleventh object carrying such a label, and the first
object carrying a label having the B postal code. Ten revolutions
or operating cycles after the first label having the postal code C
and the characterizing mark M has been detected, the counter 50
supplies a signal to the gate 51. At this time, the shift register
SR3 contains only binary no signals, no yes signals, so that the
gate 51 receives no signal from the gate 53, and that latter
supplies a signal to the fourth shift register SR4 which signal
simultaneously returns the counter from zero to the present number,
that is 10 in the particular example. After the counter 50 has
proceeded to count the next 10 objects and labels, it will again
produce a signal which is supplied to the gate 51. At this time,
the two terminal stages of the shift register SR3 contain two no
signals, whereas the center stage contains a yes signal that is
stored therein and is produced by the detection of the
characterizing mark M indicative of the first of the labels
carrying the B postal code. The gates 54, 52 and 53 now produce at
the gate 51 a signal which suppresses the signal derived from the
counter 50. After two further operating cycles the gate 51 receives
a signal from the gate 53, whereas the signal previously produced
by the counter 50 has disappeared. As a result, the gate 51
supplies a signal to the shift register SR4 and at the same time
returns the counter 50 to the preset number, that is 10 in this
example. This means that the solenoid 12 is energized not after ten
revolutions but only after twelve of them, so that the last package
or bundle of objects 3 carrying labels with the C postal code will
be composed of twelve of these objects, rather than ten of them. A
detailed description of NAND, NOR, AND and NOT gates is not
believed to be necessary since these are entirely conventional
designations in electronic control circuits.
It will be seen that the machine according to the present invention
thus is capable of affording the dual benefits of a reliable
reading of the characterizing mark M and of providing a clear
indication of those objects which have been labelled with labels
all of which belong to one and the same series, that is all of
which carry the same postal code.
It will be understood that each of the elements described above, or
two or more together, may also find a useful application in other
types of constructions differing from the types described
above.
While the invention has been illustrated and described as embodied
in a labelling machine, it is not intended to be limited to the
details shown, since various modifications and structural changes
may be made without departing in any way from the spirit of the
present invention.
Without further analysis, the foregoing will so fully reveal the
gist of the present invention that others can be applying current
knowledge readily adapt it for various applications without
omitting features that, from the standpoint of prior art fairly
constitute essential characteristics of the generic or specific
aspects of this invention and, therefore, such adaptations should
and are intended to be comprehended within the meaning and range of
equivalence of the following claims.
* * * * *