Time recorder
AssigneeSimplex Time Recorder Company
InventorsErich Willmann, Gunther Trischler
Life of this patent
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Abstract
A time recorder for recording time data in columns by means of a time controlled printing device on a data medium, the printing device and data medium being slidable relative to each other and every numerically recorded time datum having an identical feature, including a device having electrical circuit means with scanning means for the data medium to prevent overprinting on time data, the scanning means comprising an optical tracing device which is orientated to the position of the defined mark and responds to the presence of the said mark and drives a stop abutment.
Claims8
A time recording device for use with a record medium on which time data are to be imprinted on respective lines of a column with each datum including as a first digit one of the group of digits 0 and 1 and 2 and each of which digits has the common feature of an optically detectable cross-bar at its base, including in combination,
- a. printing mechanism including a printing head for printing data, each of which includes a first digit having an optically detectable cross-bar at its base,
- b. positioning means for receiving a record medium inserted in said device,
- c. optical sensing means for detecting the presence of one of said cross-bars,
- d. means mounting said sensing means in a fixed position with respect to said printing mechanism at a location at which it can register with the cross-bar of the first digit of a printed datum, and
- e. means responsive to said sensing means for actuating said printing means.
Dependencies are inferred from the claim text.