CHECKING DEVICE FOR CHECKING THE PRESENCE OF PERSONNEL

• US 3,641,321 A
• Filed: 10/24/1969
• Issued: 02/08/1972
• Est. Priority Date: 11/16/1968
• Status: Expired due to Term

• Current Assignee: Friedrich Tonne
• Original Assignee: Friedrich Tonne
• Inventors: Tonne, Friedrich
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Wannisky, William M.
• Application Number:
  US04/869,275
• Time in Patent Office: 837 Days
• Field of Search: 235/92AC,92FP,92PD,92T 340/330,309.1-309.6 346/52,80,91 324/181,182
• US Class Current: 377/20
• CPC Class Codes: G07C 1/10 together with the recording, indicating or registering of other data, e.g. of signs of identity

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.

Claims

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 X n of said impulse emitters being variable and being expressed by k X n in which k represents a cost factor with regard to a time unit.