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公开(公告)号：US3609310A
公开(公告)日：1971-09-28
申请号：US3609310D
申请日：1969-03-28
申请人： MITE CORP
发明人： CETRAN LOUIS , FOERSTER GERHARD A , RYAN WILLIAM P
CPC分类号： G07C1/02
摘要： A timer driven by a clock motor has a multiple wire output for readout (punched holes, displayed digits, printed digits, et.). A pawl operates a ratchet wheel having a number of teeth corresponding to a desired maximum two digit number, and turns two rotary switches. One is a units rotary switch with a ring of short contacts equaling the desired maximum number. The short contacts are in groups corresponding to 0-9, 0-9, etc., with a remainder when needed. The second rotary switch is a tens rotary switch having a wiper arm which is moved over a ring of long contacts each corresponding to ten short contacts, but the last long contact corresponds to the remainder, if any. The number of long contacts equals the number of groups of short contacts, and all contacts are printed on the front face of a printed circuit board. The back face of the board is printed with conductors which connect all contacts representing like digits. Because the contacts are arranged in a ring, there is an automatic reset to zero. The maximum number may be 99 for tenths and hundredths of an hour, or it may be 59 for minutes, with the clock motor output shaft turning 100 or 60 revolutions per hour respectively. The first shaft operates the pawl of a second ratchet wheel once for each revolution of the first shaft, and the second wheel has 24 teeth. A second printed circuit board has third and fourth rotary switches driven by the second ratchet wheel one revolution a day. There are contacts for a maximum of 23 followed by reset to 00. The combined maximum then is 23.99 with reset to 00.00 for a 24 hour day. For a readout in hours and minutes the maximum number is 23:59 with reset to 00:00.
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公开(公告)号：US3626463A
公开(公告)日：1971-12-07
申请号：US3626463D
申请日：1968-11-20
申请人： MITE CORP
发明人： FOERSTER GERHARD A , WOLOG WALTER , CETRAN LOUIS , RYAN WILLIAM P
CPC分类号： G07C1/06
摘要： The present time stamp eliminates the usual hammer and solenoid with their impact noise. Instead, a carriage is mounted for reciprocating travel along the print wheels, and an impression roller carried by the carriage serves to press successive parts of a document against the print wheels. The desired print is thus obtained by means of a quiet rolling action rather than by a noisy hammer impact. There is smooth acceleration and deceleration of the carriage, thereby further avoiding noise and vibration. There are print wheels for date, month, year and the time in hours and minutes. Most of the print wheels are moved by pawl and ratchet mechanism. A timing motor drives a cam and cam follower to operate the pawl, and the cam configuration causes smooth acceleration and deceleration of the pawl movement, which again contributes to quiet operation. The time print wheels are provided with separate readout discs. These are made of sheet material and are progressive in diameter to expose readout numerals on the outer faces of the discs near their periphery. The time print wheels have concentric hollow shafts each extending axially to its readout disc. Additional print wheels print the date, the month, and the year.
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