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Патент USA US3071239

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Jan. 1, 1963
R. J. MARING
3,071,229
PRINTER
Filed Feb. 1, 1960
INVENTOR.
ROBERT J. MARING
W4WWW
ATTORNEIZS :
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1C6
3,071,229
Patented Jan. 1, 1963
2
application Serial No. 791,728 intermittently advances,
3,071,229
PEWTER
Rehert .l'. Matting, Grand Rapids, Mich, assignor. to
Toledo Scale Corporation, Toledo, Ohio, a corporation
of (Phio
Filed Feb. 1, 1960, Ser. No. 6,000
4 Claims. (Cl. 192—127)
prints, and cuts off successive portions, such as tickets,
labels, or the like, from a continuous strip 1 of such
portions. The several working components of the printer
are driven by means of a main drive shaft 2 which is
connected through a clutch 3 and a shaft 4 to a continu
ously running motor 5. The clutch 3 is an ordinary one
revolution clutch which so operatively connects the main
drive shaft 2 to the continuously turning shaft 4 that the
This invention relates generally to printing apparatus,
and more particularly to label or ticket strip supply mech 10 drive shaft 2 is turned one revolution for each printing
cycle, the clutch being controlled or operated by a sole
anism for printers of the type shown in copending U.S.
noid 6 the energization of which makes the clutch opera
application Serial No. 791,728 ?led February 6, 1959,
tively connect the shafts 2 and 4 so that they turn .as
in the names of C. E. Adler and F. C. Carroll that is
one and the deenergization of which allows the clutch
adapted to print and issue labels, tickets, or the like.
The object of the invention is to provide simple means 15 to slip. The main drive shaft 2 corresponds to the main
drive shaft 26 shown in the foregoing US. application
for warning when the supply of label or ticket strip
Serial No. 791,728. The exact nature of the drive means
reaches a ?rst predetermined minimum length and for
for turning the main drive shaft 2 is not critical for the
automatically interrupting the operation of the printer
purposes of the invention. For example, the clutch 3
when such supply reaches a second predetermined mini
and its solenoid 6 could be eliminated and the motor 5
mum length.
directly connected to the drive shaft 2, the motor in such
This and more speci?c objects and advantages are ap
case being connected in the circuit shown in FIG. II in
parent from the following description of a preferred em
place of the solenoid. This arrangement would result in
bodiment of the invention.
an operation of sl wer speed, since a motor requires time
According to a speci?c embodiment of the invention,
to reach top speed. For a clear understanding of the
the printer which is shown in the foregoing U.S. appli
structure and function of the apparatus of the invention
cation Serial No. 791,728 is provided with a pair of limit
it is necessary only to know that deenergization of the
switches spaced along its label chute each having its
solenoid 6 or of the motor 5 paralyzes the drive means
actuator normally operatively maintained in sensing en
which stops operation of the printer.
gagement with the label or ticket strip in the chute. One
The main drive shaft 2 is operatively connected as
of the switches is so spaced from the printing station 30
shown in the foregoing U.S. application Serial No. 791,728
that when the supply of labels or tickets in the printer
to a shaft 7 which is the drive shaft for mechanism for
is down to about seven, i.e., substantially exhausted, the
feeding the label strip 1 into a printing station 8; this
last one of such labels or tickets passes by such switch
mechanism includes a supply roll, which is not shown but
and the switch operates closing a circuit to a warning
which is shown and described in copending US. appli
light. The other one of the switches is so spaced from
the printing station that when the supply of labels or
cation Serial No. 761,622 ?led September 17, 1958, in the
name of F. G. Carroll, now abandoned, that feeds the
tickets in the printer is down to about four, i.e., exhausted,
label strip into a chute 9, as indicated by the straight
the last one of such labels passes by such switch and the
switch operates opening a circuit to the electrically oper
arrow in FIG. I, which is attached to the lower side of
40 a frame member 10 and which has registering openings
ated drive means for the printer to stop the printer.
The limit switches provide an exceedingly simple
11 in its upper and lower walls which are juxtaposed to
and in registry with an opening 12 in the frame member
means for warning when the supply of label or ticket
strip is substantially exhausted and for automatically
10. The label strip 1 is engaged for feeding by a driven
stopping the printer when such supply is exhausted and
pressure roller 13 which extends through the openings 11
features sensing of the label strip after it is unrolled 45 and 12 and which cooperates with a driving cam 14 se
cured on the shaft 7. Rotation of the driving cam 14- in
from a supply roll. This is in contrast to prior com
plicated mechanical devices for sensing the near end of a
the direction indicated by the curved arrow in FIG. 1,
during the interval while an outer portion 15 of the cam
label or ticket roll which operate on the rolls themselves.
is in pressure engagement with the label strip 1 and the
Such prior devices, since they operate on the rolls, have
an accuracy which is a function of the consistency of 60 roller 13, drives the label strip 1 toward the printing
station 8.
the diameters of the rolls and must be removed in order
The driven roller 13 is journalled in and between spaced
arms 16, ‘only one of which is shown, which are pivoted
the way when rolls are replaced.
on an axle 17 that is supported between a pair of angle
A preferred embodiment of the invention is illustrated 55 brackets 18, only one of which is shown, on top of the
to replace the rolls. Hence, such prior devices are ex
pensive, apt to get out of order, inaccurate, and are in
in the accompanying drawings.
In the drawings:
frame member 10 and is positioned vertically for adjust
PEG. I is a fragmentary vertical sectional View of label
or ticket strip feeding means corresponding to FIG. VII
an adjustment screw 19 that is threaded into the top of
the frame member 10 and that is connected to the arms
16 by means of a bar 20 extending therebetween. The
in the foregoing US. application Serial No. 791,728 and
incorporating the label or ticket exhaustion indicating
means and the means for automatically stopping the
printer upon exhaustion of the label or ticket strip of
the invention; and
FIG. II is an electrical wiring diagram showing the
electrical operation of such label or ticket exhaustion
indicating means and such means for automatically stop
ping the printer.
These speci?c ?gures and the accompanying descrip
ment of the pressure on the feed cam 14 by means of
bar 20 is ‘clamped in adjusted position between the shoul
der on the head of the adjustment screw 19 and a nut
21 threaded on the screw.
In order to prevent unexpected running-out of the label
. strip 1, electrically operated strip exhaustion warning
means is provided; the warning means includes a snap
action, normally closed limit switch 22 which is hung
by means of a bracket 23 from the underneath side of
the frame member 10 and which has its actuator 24 nor
tion are intended merely to illustrate the invention but
70 mally operatively maintained in sensing engagement with
not to impose limitations on the claims.
the label strip in the chute 9, the chute 9 de?ning a pair
The printer which is shown in the foregoing US.
of registering openings 25 in which the acutator 24 oper
3,071,229
3
ates, i.e., the label strip 1 operates the switch 22 holding
the normally closed switch open. The limit switch 22 is
so spaced from the printing station 8 that when the supply
of labels in the printer is down to about seven, i.e., sub
stantially exhausted, the last one of such labels passes
by such switch and the normally closed switch contacts
26 of switch 22 close, i.e., absence of the label strip 1
at the switch actuator 24 causes operation of the switch
l.
roll. Hence, the sensing accuracy is independent of sup
ply roll diameters and there is nothing to obstruct re
placement of the supply roll. The warning and stopping
means are of low cost, not apt to get out of order, ac
curate, and are not in the Way when supply rolls are
replaced.
The embodiment of the invention herein shown and
described is to be regarded as illustrative only and it is
22. The contacts 26 are connected in a lead 27 which
to be understood that the invention is susceptible to vari
receives current from a lead 28 that is connected to a 10 ation, modi?cation and change within the spirit and scope
suitable source. Closing of the contacts 26 completes a
of the subjoined claims.
circuit to a lamp 29, current ?owing through the lamp 29
Having described the invention, I claim:
and a lead 30 to the other side of the line. The lighting
of the lamp 29 warns the operator that operation of the
printer should be halted and a new supply of label strip
provided. Instead of the lamp 2‘), a bell or any other
successive portions of a continuous strip of such portions,
r in combination, drive means for operating the machine,
electrical indicator could be utilized.
Should the operator fail to heed the signal from the
switch means sensing the strip for actuating the warning
warning means, the printer automatically is stopped
shortly thereafter. A snap~aotion, normally open limit
witch 31 is located on top of the frame member 10
1. In a machine for printing at a printing station on
electrically operated strip exhaustion warning means, ?rst
means when the length of the strip reaches a ?rst pre
determined minimum, and second switch means sensing
the strip for paralyzing the drive means when the length
of the strip reaches a second predetermined minimum, the
adjacent the registered openings Ill and 12 in the chute
?rst switch means being more remote from the printing
9 and in the frame member 10, respectively. The switch
station than the second switch means whereby the warn
31 has its actuator 32 normally operatively maintained in
ing means is actuated before the drive means is paralyzed
sensing engagement with the label strip 1 in the chute 9, 25 to prevent unexpected running-out of the strip.
the actuator 32 operating in such openings 11 and 12, ie.,
2.1 A combination according to claim 1 wherein the
the label strip It operates the switch 31 holding the nor
drive means includes a clutch and electrical means for
mally ‘open switch closed. The limit switch 31 is so
actuating the clutch and the second switch means con
spaced from the printing station 8 that when the supply
trols the electrical means for paralyzing the drive means
of labels in the printer is down to about four the last 30 when the length of the strip reaches the second pre
one of such labels passes by‘ such switch and the normally
determined minimum.
open switch contacts 33 of switch 31 open, i.e., absence
3. A combination according to claim 2 wherein the ?rst
of the label strip 1 at the switch actuator 32 causes oper—
ation of the switch 31. The label supply is considered
switch means is in circuit with the warning means for
closing the circuit to the warning means to actuate the
exhausted when the supply is down to about four because 35 warning means when the length of the strip reaches the
the last one of such labels is advanced beyond the feed
?rst ‘predetermined minimum and‘ the second switch
cam 14 and no more labels can be fed into the printing
station 8 even through several labels still remain in the
chute 9. ‘The contacts 33 are connected in a lead 34
means is in circuit with the electrical means for opening
the circuit to the electrical means to paralyze the drive
which receives current from the lead 28. Opening of the
contacts 33 breaks a circuit to the solenoid 6 the deener
gization of which paralyzes the drive means for the
printer which stops operation of the printer as herein
before described.
. The length of the label strip 1 when the supply of labels
is substantially exhausted is de?ned as a ?rst predeter
mined minimum length and the length of the label strip
means when the length of the strip reaches the second
predetermined minimum.
4. A combination according to claim 1 wherein the ?rst
and second switch means each includes a switch actuator
so operatively maintained in engagement with the strip
that absence of the strip at the actuators causes operation
of the switch means.
References ‘Cited in the ?le of this patent
1 when the supply of labels is exhausted is de?ned as a
UNITED STATES PATENTS
second predetermined minimum length.
The limit switches 22 and 31 provide an exceedingly 50
simple means for warning when the supply of label strip
is substantially exhausted and for automatically stopping
the printer when such supply is exhausted and features
sensing of the label strip after it is unrolled from a supply
1,071,608
1,921,217
1,988,255
2,071,941
2,313,888
2,679,307
Dear et a1 ____________ .._ Aug. 26, 1913
Cogh?l ______________ __ Aug. 8, 1933
Soons _______________ __ Jan. 15,
Flaws _______________ __ Feb. 23,
Otis _________________ __ Mar. 16,
Kock _______________ __ May 25,
1935
1937
1943
1954
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