U.S. patent number 3,641,321 [Application Number 04/869,275] was granted by the patent office on 1972-02-08 for checking device for checking the presence of personnel.
Invention is credited to Friedrich Tonne.
United States Patent |
3,641,321 |
Tonne |
February 8, 1972 |
CHECKING DEVICE FOR CHECKING THE PRESENCE OF PERSONNEL
Abstract
A control device for checking the time during which several
persons belonging to an office or factory are present, which
comprises a plurality of switches respectively allotted to the
persons whose presence is to be checked and also comprises a
plurality of counting means respectively associated with said
switches while the circuit means comprising said switches and said
counting means comprise for each switch a blocking device adapted
in response to the failure of the person whose presence is to be
checked to switch off the switch during a work break to block the
pertaining counting means from resetting.
Inventors: |
Tonne; Friedrich (7301
Scharnhausen, DT) |
Family
ID: |
5713507 |
Appl.
No.: |
04/869,275 |
Filed: |
October 24, 1969 |
Foreign Application Priority Data
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|
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Nov 16, 1968 [DT] |
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P 18 09 306.6 |
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Current U.S.
Class: |
377/20; 346/80;
377/13; 340/330; 346/91; 377/16 |
Current CPC
Class: |
G07C
1/10 (20130101) |
Current International
Class: |
G07C
1/10 (20060101); G07C 1/00 (20060101); G06f
007/46 () |
Field of
Search: |
;235/92AC,92FP,92PD,92T
;340/330,309.1-309.6 ;346/52,80,91 ;324/181,182 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Yusko; Donald J.
Assistant Examiner: Wannisky; William M.
Claims
What I claim is:
1. A control device for checking the time during which persons
belonging to an office or factory are present for work, which
comprises: a plurality of personnel control units which corresponds
in number to the number of persons whose presence is to be checked
and which are respectively allotted to said persons, each of said
personnel control units including a control switch adapted by the
respective person whose presence is to be checked to be switched-on
and switched-off at the start and at the end respectively of the
respective person's working time, each of said personnel control
units also including counting means respectively associated with
said control switch of the respective unit for registering the time
during which the pertaining control switch is turned on, each
personnel control unit also including electrically controllable
blocking means operatively connected to the pertaining control
switch and counting means and operable in response to the failure
of the person whose presence is to be checked to switch-off the
pertaining control switch at the end of his working period to
preclude and block next working period resetting of the respective
control switch by the respective person.
2. A device according to claim 1, in which said blocking means is
controllable by electric impulses.
3. A device according to claim 1, in which said blocking means
includes electric circuit means comprising said counting means and
also comprising circuit breaker means.
4. A device according to claim 3, in which said blocking means
includes relay means.
5. A device according to claim 4, in which said blocking means
includes polarized relay means.
6. A device according to claim 3, in which said blocking means
includes electronic control means.
7. A device according to claim 3, in which said blocking means
includes bistable transistor sweep circuit means.
8. A device according to claim 3, in which said blocking means
includes electric fuse means.
9. A device according to claim 3, in which said blocking means
includes thermal switch means.
10. A device according to claim 1, which includes timer means
electrically connected to said blocking means and operable at
desired times to emit control impulses to said blocking means for
actuating the same.
11. A device according to claim 1, which includes manually operable
resetting means for resetting said blocking means to its inactive
position.
12. A device according to claim 11, in which said resetting means
includes a key feeler.
13. A device according to claim 1, in which said counting means is
arranged in the immediate vicinity of said control switch means to
permit the direct reading of said counting means by the person
actuating the pertaining switch means.
14. A device according to claim 1, which includes impulse emitter
means, and in which said counting means includes impulse counting
means for counting the impulses emitted by said impulse emitter
means.
15. A device according to claim 1, in which said control switch
means are respectively operable by different safety key means.
16. A device according to claim 1, in which said control switch
means are respectively operable by differently coded identity card
means.
17. A device according to claim 1, which includes adjustable timer
means adapted to be set for controlling said counting means so as
to turn the same off during work breaks.
18. A device according to claim 1, in which said control units are
respectively arranged near the working place of the persons whose
presence is to be checked.
19. A device according to claim 1, which includes tape recorder
means having a plurality of channels corresponding to the number of
persons whose presence is to be checked and respectively
operatively connected to said control units.
20. A device according to claim 1, which includes a plurality of
optically visible means respectively associated with said control
units and indicating the organization plan of the office or factory
of the persons whose presence is to be checked.
21. A device according to claim 1, which includes auxiliary
counters respectively associated with said counting means and
operable selectively to be made effective and ineffective.
22. A device according to claim 21, in which said auxiliary
counters are impulse counters, and which includes impulse emitters
for feeding impulses to said auxiliary counters, the impulse number
k.times. n of said impulse emitters being variable and being
expressed by k.times. n in which k represents a cost factor with
regard to a time unit.
Description
The present invention relates to a control device for checking the
time during which several persons belonging to an office or factory
are present and, more specifically, concerns a device of this type
which comprises a switch pertaining to each of these persons and
also comprises an integrating counting device as personnel unit
which is connected to said switches, said counting unit being
adapted to be turned on by the respective person to be checked via
the switch when said person begins to work and also being adapted
to be turned off when said person has completed his work, the
switching-on and switching-off being effected by means of an
actuating device, especially a safety key.
Inasmuch as the control device is to be actuated by the person to
be checked while on the other hand the device should indicate,
whether the person to be checked has actually put in the required
number of working hours for a certain pay period, it is necessary
to eliminate any possibility of misusing the checking device. The
foregoing is important in particular when no fixed working time is
set which means that the respective person can freely select the
time of beginning and ending his working hours. If the person to be
checked would at the end of his working day not turn off the
counting device, the latter would continue to run and would under
these circumstances indicate a longer presence than corresponds to
the actual presence.
It is, therefore, an object of the present invention so to design a
checking device of the above-mentioned type that the
above-mentioned misuse cannot occur or at least cannot occur
unnoticed.
This object and other objects and advantages of the invention will
appear more clearly from the following specification in connection
with the accompanying drawings, in which:
FIG. 1 diagrammatically illustrates a checking device according to
the invention.
FIG. 2 diagrammatically illustrates a modified checking device
according to the invention with a number of control units
corresponding to the number of persons to be checked, said control
units being combined to groups.
FIG. 3 diagrammatically illustrates a third embodiment of the
invention in which the counting mechanism registering the total
working time is followed by a plurality of subcounting mechanisms
for registering individual working operations within the said total
working time.
The checking device according to the present invention is
characterized in that it comprises a blocking device which is
connected to the switch and the counting mechanism in such a way
that when the checking device is not turned-off, it will make the
counting device ineffective and cannot be reset to the original
condition by the person to be checked. Preferably, the blocking
device is put into action by an electric impulse which at a certain
time is introduced into the checking device when all persons to be
checked are absent as, for instance, during the night. When one of
the switches at the end of the work period has not been switched
off by the respective person to be checked, it will be impossible
for said person at the beginning of the next work period to turn on
the switch in order to make the counting mechanism effective again.
This person then has to report to a control station which has the
suitable means to make the blocking device ineffective. In view of
this automatic indication of a failure to switch off the checking
device, there is created a possibility to deduct the excess time
which has been entered by the counting mechanism.
With a checking device of this type a very reliable control is
possible as to the actual working hours a person to be checked has
put in for a certain pay period, for instance, for a week or a
month.
To an ever increasing extent, organizations and factories permit
their workers to select within certain limits the begin and the end
of their work day. In such an instance it is possible by means of a
central control device to obtain the precise data on the basis of
which the pay is calculated. However, the individual person to be
checked is unable by means of such checking device to ascertain how
many hours he has actually worked in a certain pay period, for
instance, in a week. However, such indication is above all
desirable in order to be able to determine how the remaining work
hours can best be distributed most favorably in accordance with the
prevailing conditions over the rest of the days of the pay period
without falling short of the required total number of hours for a
certain pay period.
It is, therefore, also an object of the present invention to
provide means which will enable the individual person to be checked
to make a check on his own and to learn the respective indication
of the counting device representing the number of his work
hours.
This problem has been solved with the checking device of the
above-mentioned type by arranging the counting mechanism in
conformity with the present invention in the immediate vicinity of
the pertaining switch so that the counting mechanism can be read
directly by the person actuating the switch. In view of the fact
that the person to be checked will at any time be able to read the
indication on the counting mechanism, which means to know how many
of the work hours required for a certain pay period he has already
put in, there is obtained the advantageous possibility to
distribute the remaining work hours for said certain pay period in
a manner most suitable for said person. This is an important
condition for the control of a freely selectable work day. No
special way of calculation is required for evaluating and
calculating the total number of working hours registered by the
checking device. It will rather suffice to read the respective
indication of the counting device which can be done centrally in
the heretofore known manner.
With heretofore known checking devices it was customary to provide
the same at the respective entrance to the office or factory. For
the purpose of associating the individual actuating devices with
the respective person to be checked, heretofore the respective
person had always to use a certain entrance of his office or
factory provided for checking this person. Therefore, according to
a further development of the present invention, it is suggested
that those elements or devices which are accessible to the
registering person, namely at least the switch and the counting
mechanism, are combined in groups to control units and that such
unit each is arranged in the vicinity of the working place of the
individual person, i.e., in a decentralized location.
Most offices and factories have regulations providing for a fixed
time for the start and end of breaks which can be taken during the
working hours as provided by law. Since these breaks must not be
counted as working time for a pay period, it is provided in
conformity with a further development of the invention that an
adjustable timer controls the counting action according to a preset
program and, more specifically, turns off the counting mechanism
during the fixed work breaks.
Referring now to the drawings in detail and FIG. 1 thereof in
particular, the checking device illustrated in FIG. 1 comprises for
each person of the respective organization to be checked an
electric switch 1A, 1B, 1C, etc. Each of said switches is operable
only by a safety key belonging to the respective person to be
checked. More specifically, the switch 1A can be actuated only by
the key 2A, the switch 1B can be actuated only by the key 2B,
etc.
Each of the individual switches has furthermore associated
therewith a separate counting device 4 which in the present
embodiment happens to be designed as an impulse counter and
cooperates with an impulse emitter 5 which latter emits, for
instance 100 impulses per hour. However, instead of the impulse
counter also other counting devices of standard design for counting
the work hours may be employed.
When the person A to be checked closes the switch by means of his
key 2A, the impulses emitted by the impulse emitter 5 are fed to
the impulse counter until the person again opens the switch 1A by
means of his key. This is done at the end of the time during which
he has to be present in the plant or the like so that the impulse
counter will record the actual presence of the respective person
and this time can be read at the end of a pay period, for instance,
a week or a month. However, when the switch 1A is not opened when
the person leaves the plant, the counting device 4 will for the
said person continue to run and will then indicate an incorrect
"present" time.
In order to prevent such misuse of the checking device, the
invention provides that between each of the switches 1A, 1B, 1C,
etc., and the pertaining counting device 4 there is arranged a
blocking device 20 each. These blocking devices 20 are connected
with the respective switches and counting devices in such a way
that by means of the blocking devices also when the switch is
closed, the feeding of counting impulses to the counting devices
can be prevented as soon as the blocking device is actuated. With
the particular embodiment illustrated in FIG. 1, the blocking
device comprises a polarized relay 21 with a switch bridge 22 which
in one stabile operative condition of the relay establishes
connection of the counting device 4 with the switch 1A of the
person A to be checked, and in the other stabile switch condition
interrupts this circuit and then in lieu thereof turns on a
signalling lamp 30. In order to be able to move the relay 21 from
its illustrated switched-on position to the switched-off position
and in this connection to make the blocking device 20 effective,
the coil of relay 21 is connected to a terminal of switch 1A.
At certain times, primarily during the night, the persons to be
checked are either not in the plant or do not have to be in the
plant. Therefore, at this time all counting devices for the persons
to be checked must be turned off. It is during this time of
complete rest of the plant that preferably a control point, for
instance midnight, is set. With the illustrated embodiment there is
to this effect provided a timer 24 which at this set control point
by means of a rectifier 25 emits a setting impulse upon that
blocking device, the pertaining switch 1A, 1B, 1C etc., of which is
in an undue manner still in its closing position. To this effect
the rectifier 25 is provided between the impulse emitter 5 and the
conductor 28 interconnecting the individual switches 1. When the
timer emits a setting impulse, the switch bridge 22 of the
respective blocking device is lifted off and thereby interrupts the
connection to the counting mechanism 4. With all other counting
units which are properly turned off, this setting impulse will have
no effect.
The polarized relay 21 is secured against outer manipulation so
that it cannot be reset or returned to the original switch
condition by the person to be checked.
In order to make sure that the registering or counting device which
in this way is put out of operation cannot again be set into
operation during the next start of the work day of the person to be
checked, the stabile switching-off of the blocking device 20 has to
be neutralized by an outer manipulation and has to be returned to
its original condition. To this end, with the illustrated
embodiment, there is provided a switch contact 26 by means of which
from the network power supply component or powerpack 8 serving for
feeding the impulse emitter 5 a resetting impulse may be sent
directly to the polarized relay, if desired, with the aid of a
rectifier 27. This switch contact 26 is arranged at a central place
or a control station which is not accessible to the persons to be
checked, as for instance the accounting department. The return
switch may be additionally blocked against unauthorized
manipulations, for instance, by means of a safety lock. At any
rate, it is important for the arrangement according to the
invention that the person to be checked has no possibility to
render the blocking device 20 ineffective which was actuated due to
the fact that the switch pertaining to the person to be checked was
permitted in an undue manner to remain closed. In order to make the
blocking device ineffective, the respective person will therefore
have to contact the control or supervising department.
As blocking device there may also be employed a nonpolarized relay
or an electronic control system, for instance, a bistable
transistor sweep circuit or an electric melting fuse. Such melting
fuse may in a simple manner be burned through by the setting
impulse. It is also possible to employ a thermal switch-off
mechanism actuated by an overvoltage impulse which switch can then
be returned by hand to its starting position.
The checking device according to FIG. 2 comprises a number of
control units corresponding to the number of persons to be checked.
These control units are combined to groups on individual indicating
or control boards 10 and may be arranged in the vicinity of the
place where the respective person works. More specifically, each
control unit comprises a key switch 1 having a receiving opening
into which a safety key 2 may be inserted. The person to be checked
keeps the key and when entering the plant inserts the key into the
switch 1 and by turning the key moves the switch to its switched-on
position. In this switched-on position the switch 1 establishes
connection between a counting mechanism 4 arranged in the immediate
vicinity of switch 1 and a current supply source 15 which similar
to the impulse emitter 5 of the embodiment of FIG. 1 emits 100
impulses per hour. As soon as switch 1 has been placed into its
switched-on position and then has registered the presence of the
person to be checked by placing the counting mechanism into
operation, the person to be checked may withdraw the key. According
to the embodiment of FIG. 2 it is required that by means of the
switch 1 there is turned off an absence control lamp 3 which
previously lighted up as soon as the counting mechanism had started
its operation. On the counting mechanism 4, under the influence of
each impulse emitted by the emitter 5 a nonillustrated indicating
device is advanced by one one-hundredth unit. The counting
mechanism in contrast to heretofore known control devices has no
daily return position but continues to move beyond the number of
days pertaining to a pay period. In this way it is possible that
each of the persons to be checked is able at the pertaining
counting or registering unit to read the number of work hours
completed up to said point when the person actuates the switch.
This will afford the possibility of ascertaining the further
necessary working hours for a pay period and to distribute these
hours in a desired manner over the next days.
According to the embodiment of FIG. 2, for each person to be
checked there is provided an individual channel on a multichannel
tape recorder 7. This tape recorder 7 is driven continuously. The
individual channels 6 of the tape recorder 7 respectively register
the condition of the switch of one of the key switches 1.
With the illustrated embodiment it is provided that the voltage
required for the operation of the checking device may be supplied
by a network power supply component or powerpack 18. This network
power supply component or powerpack 18 may precede a time clock or
timer 9 which controls the checking in conformity with a
predetermined program. This is of primary importance when the work
breaks as provided by the work contract are not to be recorded by
the counting mechanism. In this instance the counting mechanism 4
may by means of the timer 9 be held in off position during these
workbreaks.
The individual checking units comprising a switch 1, a lamp 3 and a
counting mechanism 4 may be provided several times for each
individual person. These control units may, for instance, be
located in the respective departments of the plant, in a central
control station or at the entrance to the plant. It is of
particular advantage to provide additional lamps 11 in parallel
arrangement with regard to the connections of the tape recorder
channels 6. These lamps will light up when the person to be checked
is present and are built into an organization diagram 12 which, for
instance, informs the telephone exchange about the presence of a
person to be checked.
Instead of the safety keys 2 also coded identification cards or
personal codes in cooperation with suitable electric matrices may
be employed as switches. It is also possible instead of the impulse
counter 4 and the impulse emitter 5 to provide other devices which
will check the duration of operation, for instance a known counter
for counting the hours of operation.
Similar to the embodiment of FIG. 1, for each counting device
associated with an individual person there is provided one blocking
device 20 which, for instance, by means of a timer 24 is put into
operation and then in the manner described above is after having
been checked by a supervising person again reset by means of a
switch 26.
The embodiment of FIG. 3 represents a further development of the
embodiment of FIG. 1. It has been found expedient to record the
total working time registered by the checking device for a person
to be checked in such a way that at least a part of the total
working hours can be associated with individual working operations.
To this end, the counter 4 registering the total working time has
associated therewith a plurality of auxiliary counters 41, 42 and
43 which may be turned on by nonillustrated control devices and
which then will register the time pertaining to the individual
working operations. These auxiliary counters 41-43 are provided
with a resetting key 46 and accordingly may, if desired, be reset
to a starting value. Moreover, the main counting device 4 has
associated therewith an auxiliary counting device 44 which may
likewise have a resetting key and is adapted, for instance, to
register the respective working hours beyond a certain pay
period.
According to a particularly advantageous arrangement of FIG. 3,
there is provided an auxiliary counting device 40 which forms an
impulse counter and may be of any design corresponding to the
design of the main counting device 4, but is fed by an impulse
emitter 50. The impulse emitter 50 has a variable impulse number
k.times. n in contrast to the impulse emitter 5' which feeds the
main counting device 4 and is adjusted for a definite number of
impulses per time unit, for instance 100 impulses per hour. The
impulse emitter 50 may be fed from the same network power supply
component or part 8' as the impulse emitter 5' if the switch 51
located in its supply circuit is held in closed position during the
time period involved in the working operation of interest. In this
instance it will be possible without difficulties so to select the
impulse number k.times. n to be emitted per time unit that k
represents a cost factor for said time unit and that the indication
on the counting mechanism directly indicates an amount of
money.
It is, of course, to be understood that the present invention is,
by no means, limited to the particular showing in the drawings but
also comprises any modifications within the scope of the appended
claims.
* * * * *