GB1267495A - Device for the recording of operating and working times - Google Patents

Abstract

1,267,495. Recording elapsed time. KIENZLE APPARATE G.m.b.H. March 20, 1970 [March 28, 1969], No. 13578/70. Heading G1J. Apparatus for recording operational and working times of a vehicle driver comprises a writing arm 7 and several driving coils 3, 4, 5 selectively energized by an electrical pulse generator 1 individually or in pairs to act on a rotatable armature 18 coupled to the arm 7 which it drives perpendicularly to the direction of movement of a time driven record surface so as to perform writing movements limited in such a way as to distinguish different elapsed-time periods. In order to record the working or driving time (F), stand-by time (A) and pauses, (P) of two motor vehicle drivers I, II, two writing arms 7, 6 are pivoted on shafts 10, 9 and provided with spring mounted stylii 12, 11 and pins 14, 15 urged into contact with a cam 16 by a spring 13, the cam 16 being mounted on the shaft 17 of the two-pole magnetic armature 18 and having several concentric steps arranged symmetrically about a central position. The stylus 12 remains in one zero position so long as coil 3 is not energized and stylus 11 in another so long as coil 5 is not energized, while energization of the coils 3 and 5 respectively cause the cam to turn in one direction or the other, through 45 degrees if coil 4 is also energized, otherwise through 90 degrees. To record bar diagrams representing different categories of elapsed time the drivers select their appropriate categories by setting individual switches 19, 20 Fig. 3, (an interlock preventing both being set to drive poisition (F)) and an astable multi-vibrator produces pulses alternately at terminals AI, All for energizing the coils 3, 4 and 5 as required to cause the stylii 12, 11 to trace broad or narrow bars or "zero" lines as appropriate to represent working or stand-by time or pauses for each driver.