US2543983A

US2543983A - Calendar clock mechanism

Info

Publication number: US2543983A
Application number: US788620A
Authority: US
Inventors: John E Ostline
Original assignee: Automatic Electric Laboratories Inc
Current assignee: Automatic Electric Laboratories Inc
Priority date: 1938-06-14
Filing date: 1947-11-28
Publication date: 1951-03-06
Anticipated expiration: 1968-03-06

Description

March 6, 1951 J. E, OSTLENE CALENDAR CLUCK MECHANISH Original Filed June 12, 1939 S Sheets-Sheet 1 Flu,

T L CC PF C P C -o P T PU l FIG 1 H6. 2 FIG 3 PEG. 4 F165 INVENTOR.

John Ellis Os'riine March 6, 1951 OSTL! N E CALI-333F151? CLLG K MECHANISM Original Filed June 12, 1939 T k T @235 2% x23 1265- r Fm 6 *"FTE' AND- TIME |267\ U o V i;

'. 1 4 1212 v 1242 a 5 E 8 @1250 M ENERGIZED Ar a me Esau AF MASTER CLOCK g \m. Y

as? My M 6, 1951 J. E. OSTLINE 2,543,983

CALENDAR CLOCK IECHANISI Original Filed June 12, 1939 5 Sheets-Sheet 3 FIG. 3

WE AND TIME UNIT D T U INVENTOR.

John Elhs Osfline March 6, 1951 J. E. OSTLlNE CALENDAR CLQCK MECHANISM 5 Sheets-Sheet 4 Original Filed June 12, 1939 FIG. 4

DATE AND TSME UNIT D T U &

INVENTDR.

John Ellis Osrhne 5m WM 5 Sheets-Sheet 5 Original Filed June 12, 1939 F IG. 5

DATE AND TIME UNIT DTU F IZZB INVENTOR. John Ellis Osfline 3y WIWYI'PM Patented Mar. 6, 1951 UNITED STATES PATENT OFFICE CALENDAR CLOCK MECHANISM John E. Ostline, Chicago, Ill., assignor to Automatic Electric Laboratories, Inc., Chicago, Ill., a corporation of Delaware April 1'7, 1945.

Divided and this application November 28, 1947, Serial No. 788,620. In Great Britain June 14, 1938 13 Claims.

The present invention relates to signaling or telephone systems, and more particularly to date and time units therefor. The present application is a division of the copending application of John E. Ostline, Serial No. 447.500, filed June 18, 1942, now U. S. Patent No. 2,445,000, granted July 13, 1948; which lastmentioned application is, in turn, a division of John E. Ostline application Serial No. 278,728, filed June 12, 1939, now U. S. Patent No. 2,373,908, granted April 17, 1945.

In a signaling or telephone system of the type disclosed in the Ostline patent mentioned connections are completed by automatic switching apparatus; and in conjunction therewith, tickets are produced bearing printed items of information pertaining thereto, and including items pertaining to the dates and to the times of the connections. These date and time items are obtained from a clock-controlled date and time unit.

It is a general object of the present invention to provide for use in a signaling or telephone system of the type noted, an improved date and time unit.

Another object of the invention is to provide a clock-controlled date and time unit having improved date and time facility.

Further features of the invention pertain to the particular arrangement of the circuit elements of the date and time unit, whereby the above outlined and additional operating features thereof are attained.

The invention, both as to its orginazition and method of operation, together with further objects and advantages thereof, will best be understood by reference to the following specification taken in connection with the accompanying drawings, in which Figures 1 to 5, inclusive, taken together, illustrate diagrammatically a portion of a telephone system of the type mentioned, and the details of a date and time unit having embodied therein the features of the present invention as briefly outlined above; and Fig. 6 illustrates the mode of combining Figs. 1 to 5, inclusive, to form a unified diagram. More particularly, Fig. 1 illustrates diagrammatically a portion of the telephone system mentioned; whereas Figs. 2 to 5, inclusive, illustrate the details of the date and time unit DTU.

Referring now more particularly to the drawings, the telephone system mentioned comprises lines, not shown, automatic switching apparatus,

not shown, and a plurality of toll line control circuits, one of which is indicated at TLCC.

More particularly, a toll connection is extended from a calling line by the automatic switching apparatus through an idle one of the toll line control circuits, such for example, as the toll line control circuit TLCC to a called line. Also the telephone system comprises a plurality of converters, including the converter indicated at C, a plurality of printer-control circuits, or printer-controllers, including the printer-controller indicated at PC, a date and time unit DTU, a ticket printer PT and a record printed PU. The toll line control circuit TLCC is provided with a hunting switch CF having access both to the converters C, etc., and to the printercontrollers PC, etc.; while the date and time unit DTU is commonly associated with the printercontrollers PC, etc. Finally, the individual ticket printer PT and the common record printer PU are commonly connected to a hunting switch PF having access to the printer-controllers PC, etc.

When a call is routed via the toll line control circuit TLCC, the hunting switch CF thereof operates first to find an idle one of the converters, such for example, as the converter C; whereby certain items of record information, transmitted over the toll line control circuit TLCC incident to extending the call, are transmitted through the hunting switch CF into the converter C and then converted into storage items and returned back over the hunting switch CF into the toll line control circuit TLCC, wherein the storage items mentioned are stored. Subsequently, and at the conclusion of the established connection routed via the toll line control circuit TLCC, the hunting switch CF is operated to find an idle one of the printer-controllers, such for example, as the printer-controller PC; whereupon the printer-controller PC seizes the date and time unit DTU receiving therefrom and storing date and time items; whereupon the date and time unit DTU is released. The items stored in the toll line control circuit TLCC are also transferred via the hunting switch CF into the printer-controller PC and stored therein. Also the hunting switch PF commonly associated with the ticket printer PT and the record printer PU operates to find the particular printer-controller PC; whereupon the printercontroller PC governs via the hunting switch PF the ticket printer PT and the record printed PU causing the ticket printer PT to produce a printed ticket individual to the connection and causing the record printer PU to produce on a common record a line of printing individual to the cow nection. Aftsr the toll line control circuit TLCC has transferred all of the storage items into the printer-controller PC, it is released; and after the printer-controller PC has governed the ticket printer PT and the record printer PU it is released.

Considering now the date and time unit DTU in greater detail it is again noted that it is common to the printer-controllers PC, etc., and operates continuously, and is adapted to be con nected for a period to any printer-controller PC, etc., to enable the time in hours and minutes and the date in day of the month and month of the year to be stored in the associated printercontroller. With regard to the time, this is given in the Continental manner, that is to say, the day commences at midnight and the hours are numbered from to 24.

The whole circuit is operated by minuteimpulses delivered from a master clock. These impulses are repeated by relay I200 to the magnet of the switch MI which records the minutes. When 60 minutes have been recorded the switch HO which records the hours makes one step. when the 24th hour has been recorded the switch DA which records the day of the month makes one step. The switch MO which records the months makes one step after the switch DA has recorded the appropriate number of days. At all times markings are extended to the groups of conductors I, 2, 3 and 4 or the tens groups T and I, 2, 3 and 4 of the units groups U associated with each switch so that whenever a printercontroller is connected to the date and time unit, the markings are immediately extended over these conductors to the printer-controller and the date and time is recorded therein.

A detailed description will now be given of the operation of the unit and for convenience it will be assumed that the unit is started up from the position shown at midnight on December 31st January 1st, 1937. At the end of the first minute, relay I200 is operated and at armature I2II extends earth over key I234 to the windings of the magnet I201 01 the switch MI. At the end of the impulse when relay I200 releases, the wipers of the switch MI are stepped to position 2. The counting of the minutes as regards the units is controlled over wipers I245 and I246, both of which are earthed and the contacts in the banks are so connected to conductors I, 2, 3, and 4 of the units group U that at any moment the units portion of the number of minutes is indicated by markings extended to the conductors in accordance with the so-called WXYZ marking code. In accordance with this marking code earth is applied to the conductors I and 2 to register the digit 1; earth is applied to the conductors I and 3 to register the digit 2; earth is applied to the conductors I and 4 to register the digit 3; earth is applied to the conductors 2 and 3 to register the digit 4; earth is applied to the conductors 2 and 4 to register the digit 5; earth is applied to the conducors 3 and 4 to register the digit 6; and earth is respectively applied to the conductors I, 2, 3 and 4 in order to register the respective digits '7, 0, 9 and 0. Thus prior to the first minute pulse, wipers I245 and I246 will be on contacts I and contact I associated with wiper I245 is connected to conductor 4 while contact I associated with wiper I246 is disconnected to indicate the digit 0. After the first minute pulse wipers I24! and I246 will be on contacts 2. In this position wiper I245 is connected to conductor I while wiper I248 is connected to conductor 2 to indicate the digit 1.

Similar connections are made from succeeding contacts associated with these wipers. At the end of the 10th impulse, the wipers of the switch .MI will be stepped to position 11 and in this position a circuit is closed from earth at wiper I246 on contact II, bank multiplying, interrupter contacts I230, windings of magnet I201 to battery. Contacts II, I2 and I3 associated with wiper I246 are multiplied together so that the switch is automatically stepped by the .above self-interrupting circuit to contact I4.

It will also be seen that earth is extended from armature I2I9 of relay I202 over armature I2I4 to wiper I242 and from armature I220 of relay I202 over armature I2 I5 to wiper I239. Contacts I to I3 associated with these wipers are disconnected so that during the first 10 minutes no earth is extended to conductors I, 2, 3 or 4 of the tens group T. When the wipers are stepped to position 14, i. e. at the end of the 10th m'nute, earth is extended over wiper I239 to conductor I and over wiper I242 to conductor 2 thereby indicating the digit 1 in accordance with the WXYZ marking code. Further, earth over wiper I245 on contact I4 is extended to conductor 4 while contact I4 associated with wiper 1246 is disconnected thereby indicating the digit 0. Contacts I4 to 23 associated with wipers I245 and I246 are multipled so that the same combination of conductors are earthed from the 10th to the 19th minute as from the 0th to the 9th minute. At the end of the 20th impulse, the wipers are stepped to position 24 where earth is extended over wiper I248 on contact 24, interrupter contacts I233, windings of magnet I201 to battery. The wipers are now stepped to position 25 where a circuit is completed from earth at armature I220, armature I2 I5, wiper I239 on contact 25, upper wind ing of relay I20I to battery. Relay I20I at armature I2 I5 and its resting contact disconnects earth from wiper I239 and at its operating contact connects earth to wiper I240 at the same time opening its own energizing circuit. It now looks over armature I2I3 to earth at armature I2I8. Further at armature I2I4 and its resting contact earth is removed from wiper I242 and extended at its operating contact to wiper I243. With the switch in the 25th position, a circuit is also completed from earth at wiper I246 on contact 25, winding of relay I204 to battery, relay I204 being slow-to-operate but quick-to-release. Relay I204 in operating at armature I224 closes an obvious self-interrupting circuit to magnet I201 so that the wipers are stepped to position 1 where the circuit of relay I204 is opened. It will be seen that in this position, earth on wiper I240 is extended to conductor I of the tens group T while earth on wiper I243 is extended to conductor 3 to indicate the digit 2. As before a marking is extended over wiper I245 to indicate the digit 0.

The markings extended over wipers I240 and I243 remain the same while the switch steps from contacts I to I0. From contacts I4 to 23 the markings are altered to indicate the digit 3.

At the end of the 40th minute the wipers are stepped On to position 24 where a self-interrupting circuit is again closed for magnet I201 and the wipers are stepped to position 25. In this position earth is extended over wiper I240 upper winding of relay I202 to battery. Relay I202 closes only its X" armature I2 IT in order to prepare a series circuit including its upper and lower windings. When wiper I240 leaves the 25th powiper I24I.

sition the series circuit is completed and relay I 202 operates fully from earth at armature I22I. At armature I2I0 and its resting contact, relay I202 removes earth from wiper I240 and at armature I2" and its operated contact, relay I202 extends earth to wiper I244. At armature I220 and its resting contact relay I202 removes earth dicate the digit 4 and in positions 14 to 23 to con ductors 2 and 4 to indicate the digit 5.

At the end 01' the 60th minute, the wipers are stepped to position 24 where a sell-interrupting circuit is closed to step the wipers to position 25 where a circuit is closed for relay I200 over wiper I24I and for relay I204 over wiper I240. The operation of relay I204 also causes the wipers of the switch MI to be stepped to position 1. Relay I200 operates its X" armature I222 and when wiper I24I of the switch MI leaves position 25 it operates fully. Earth is now extended from armature I2I0 over armature I223, windings of magnet I200 to battery. The magnet is thereby energized. Further relay I202 is released at armature I22I of relay I200. Relay I204 also releases when the wipers are stepped to position 1 whereupon earth is removed from magnet I200 whereby the magnet deenergizes and the wipers of the switch I-IO are stepped from contact I to contact 2. Relay I202 at armature I2I0 opens the locking circuit to relay I200 which also releases. The switch MI together with relays I20I to I204 are now in a position to commence recording the second hour.

Referring now to the switch HO, the units digit of the hours is indicated by earth extended over wipers I249 and I250 to conductors I, 2, 3 or 4 of the units group U while the tens digit is indicated by earth extended over wipers I241 and I240 to conductors, I, 2 and 3 of the tens group T. It will be appreciated that three conductors only are provided in the tens group since this digit will be zero, 1 or 2. The connections between the contacts associated with wipers I240 and I250 and the conductors I, 2, I and 4 are the same as those between the contacts of wipers I245 and I240 of the switch MI and the four units conductors, with the exception that since the switch HO counts from 1 to 24 instead of in groups of 10, the contacts representing the last hour of the first ten and the first hour of the second ten are consecutive and so are the last hour of the second ten and the first hour of the third ten.

With the wipers on position 1, conductor 4 is earthed over wiper I240 thereby indicating the digit 0. With the wipers on position 2, conductors I and 2 are earthed over wipers I240 and I250 respectively. In succeeding positions the appropriate conductors are earthed in accordance with the WXYZ marking code mentioned. After the th hour or at the end of the hour during which the'digit 9 has been registered, the wipers are stepped to position 11 whereby conductors I and 2 of the tens group T are earthed over wipers I241 and I240 respectively to indicate the digit 1, while conductor 4 is earthed over wiper I240 to indicate the digit 0. Further at the end of the 20th hour, the wipers are stepped to position 21 where conductors I and 0 of the tens group are earthed over wipers I241 and I248 respectively to indicate the digit 2, while conductor 4 of the units group is again earthed over wiper I240. At the end of the 24th hour the wipers are stepped to position 25 where earth is extended over wiper I250 on contact 25, winding of relay I205 to battery. Relay I205 in operating at armature I225 closes an obvious self-interrupting circuit for magnet I200 over interrup er contacts I20I to step the wipers of the switch HO on to contact I and at armature I 220 closes an energizing circuit for magnet I200 oi the switch DA on which the days of the month are recorded. When the wipers of switch HO are in position 1, relay I205 releases, magnet I200 deenergizes and the wipers oi switch DA are stepped from position 1 to position 2.

The switch DA which records the day of the month has to be arranged to have a minimum of 28 settings and a maximum oi? 31 according to the least and greatest number of days in the month. In order to cope with this the markings for the conductors of the tens group are extended over the four wipers I25I and I254, all the wipers being single ended with wipers I25I and I252 being spaced 180 apart from wipers I253 and I254. The connections to the conductors of the units group are again extended over two wipers, I255 and I250, the wipers being double-ended. The connections from these wipers to the conductors oi the units group are again the same as for wipers I245 and I240 oi the switch MI and since the days are counted in groups of 10, the two sets of contacts in each bank which count successive groups of 10 are spaced apart by two contacts.

With the wipers in position 1, no earth is extended to the conductors of the tens group while earth is extended over wiper I255 to conductor 4 of the units group to indicate the digit 0. As the wipers are stepped from positions 1 to 11, earth will be extended over wipers I255 and I250 to the appropriate conductors as explained previously in connection with switches MI and H0. At the end of the 10th day, the wipers are stepped on to contact II and a self-interrupting circuit is completed over wiper I250 and interrupted contacts I202 i'or magnet I200. The wipers are now stepped to position 14 where earth is extended over wipers I25I and I252 to conductors I and 2 of the tens groups respectively to indicate the tens digit 1 while earth is extended over wiper I255 to conductor 4 of the units group to indicate the units digit 0. At the end oi the 19th day the wipers are stepped to position 24 where a further self-interrupting circuit is completed for the magnet I200 and the wipers I255 and I250 are stepped to position 1. Further wipers I25I and I252 are stepped out of contact and wipers I253 and I254 are stepped into contact with their banks. In this position conductors I and 2 oi. the tens group are earthed over wipers I253 and I254 respectively to indicate the tens digit 2 and conductor 4 of the units group is earthed over wiper I255 to indicate the units digit 0. The wipers continue to step to give the appropriate indications in a manner which it is believed will now be easily understood.

The stepping oi the switch M0 on which the ronths are recorded is efl'ected under the control of wiper I251 of the switch DA in conjunction with wipers I200 and I204 of the switch M0, these two wipers being single-ended and spaced apart by The units digit in the month number is determined by earth extended over wiper I26I and I262 while the tens digit is determined by earth extended over wipers I259 and I260. With the present assumption ,that the apparatus is started up at midnight on December. 31st-January 1st, the wipers of the switch MO will be on position 1 and earth will be extended to conductors I and 2 of the units group over wipers I 26I and I262 respectively. Now the wipers of the switch MO should be stepped to position 2 after the switch DA has made 31 steps, January having 31 days. At the end of the 31st day the wipers of the switch DA will be on position 16 and in this position a circuit is closed from earth at wiper I263 on contact I, bank multipling, contact I6 associated with wiper I251 of the switch DA, winding of relay I206 to battery. Relay I206 in operating locks at armature I228 to earth over wiper I258 and bank multipling; at armature I229 closes an energizing circuit for the magnet I2I0; at armature I221 closes a self-interrupting circuit for magnet I200 which thereupon rotates its wipers into the position shown where the energizing and locking circuits of relay I206 are opened. The relay releases and at armature I229 opens the circuit for magnet I 2I0 which deenergizes and steps the wipers on to position 2 where earth is extended to the appropriate conductors of the units group to indicate the units digit 2.

The switch DA continues to be stepped from position 1 and at the end of the 28th day the wipers are stepped on to position 10 whereupon a circuit is again closed for relay I206 over wiper I263 on contact 2, contact I and wiper I251. Relay I206 operates with results as previously described. Thus it will be seen that the connections between wipers I251 and the wipers I263 and I264 are so arranged that the switch MO is only stepped after the lapse of the number of days contained in the particular month.

It has been assumed that the unit was set in operation at the beginning of 1937. The next leap year therefore occurs in 1940. During this year wiper I264 of the switch MO will be stepping over contacts I3 to 24 of the associated bank. In order to take care of the fact that February of this year will have 29 days, contact I4 associated with wiper I264 is connected to contact I4 associated with wiper I251 of the switch DA. The wipers of the switch DA step to position 14 at the end of the 29th day so that the stepping of the wipers of switch MO from contacts I4 to I5 is delayed for one day.

At the end of the fourth year the wipers of the switch MO will be stepped to position 25 and a self-interrupting circuit is completed from earth at wiper I262, interrupter contacts I233 to magnet I2I0 to step the wipers to the position shown.

It will of course be appreciated that while for convenience of description the unit has been assumed to be set in operation at a particular time and on a particular date, it can in practice he set in operation at any time on any date, the keys I235 to I238 being provided for giving the appropriate settings to the various switches manually while key I234 is provided for preventing operation by the minute pulses during this setting operation. In addition the keys I235 to I238 enable corrections to be made in the settings of the various switches during the operation of the unit.

It will be understood that it is undesirable for the stepping of any of the switches to occur while the unit is connected to a printer-controller. To avoid this earth i fed over conductor I265 from the printer-controller so that if relay I200 is operated during the association of the two units, it locks over armature I2I2 to conductor I265. Since the various switches are stepped on release of relay I200, stepping is delayed until the printer-controller is disconnected from the date and time unit.

It will be remembered that when discussing the operation of the toll line. control circuit it was pointed out that the rate digit was susceptible to alteration during the period from 19 to 7 oclock. This alteration in the rate is eijfected under the control of wiper I266 of the switch HO. This wiper is directly earthed and this earth is extended to conductor I261 when the wiper is on contacts I to 6 and 20 to 25, i. e. between the hours of 19 and 7. Conductor I261 is connected to a conductor in a toll line control circuit TLCC, etc; and when earthed serves to operate a relay therein with the results previously described.

In view of the foregoing it is apparent that a date and time unit has been provided incorporating improved date and time facility.

While there has been described what is at present considered to be the preferred embodiment of the invention, it will be understood that various modifications may be made therein, and it is intended to cover in the appended claims all such modifications as fall within the true spirit and scope of the invention.

What is claimed is:

1. In a signaling system, a clock, a fractional hour register operable step-by-step in response to impulses transmitted by said clock, a register for registering the units digits of the hours of the day operable step-by-step at the end of each hour, a register for registering the tens digits of the hours of a day operable step-by-step at the end of the ninth, nineteenth and twenty-fourth hours of each day, a register for registering the units digits of the days of each month operable step-by-step at the end of each day, a register for registering the tens digits of the days of each month operable step-by-step at the end of the ninth and nineteenth days of each month and at the end of the twenty-ninth day or at the end of each month, a register for registering the months of the year and means controlled jointly by the setting of the month, day-tens and day units registers for determining whether said month register shall be advanced at the elapse .of twenty-eight. thirty or thirty-one days.

2. In a signaling system, a clock, a fractional hour registering mechanism operable step-bystep in response to impulses transmitted by said clock, second registering mechanism for registering the units digits and the tens digits of the hours of the day operable step-by-step at the end of each hour to register the said units digit and at the end of the 9th, 19th and 24th hour of each day to register the said tens digit, third registering mechanism for registering the units digit of the days of each month and the tens digit of the days of each month operable stepby-step at the end of each day to register the said units digit and at the end of the 9th day and 19th day to register said tens digit, and in the event the month contains more than twenty-nine days said registering mechanism is also operable to register an additional tens digit said third registering mechanism also operable at the end oi. the month, fourth registering mechanism for registering the months of the year, and means controlled jointly by the setting of the fourth registering mechanism and the third registering 9 mechanism for determining whether said fourth registering mechanism shall be advanced at the elapse of 28, 29, 30 or 31 days.

3. In a signaling system, an impulsing device, a fractional hour register operable step-by-step in response to impulses transmitted by said device, a register for registering the units and tens digits of the hour of a day operable step-bystep at the end of each hour, a register for registering the units and tens digits of the days of each month operable step-by-step at the end of each day, a register for registering the units and tens digits of the months of a year operable stepby-step at the end of each month, and means controlled jointly by the setting of the month and day registers for determining whether said month register shall be advanced at the elapse of twenty-eight, twenty-nine, thirty or thirtyone days.

4. In a signaling system. a periodically operating relay, a fractional hour register operable step-by-step in response to the operation of said relay, a register for registering the units and tens digits of the hours of a day operable stepby-step at the end of each hour under the control of said fractional hour register, a second relay operable under the control of said hour regis ter at the end of each day, a register for registering the units and tens digits of the days of each month operable step-by-step under the control of said second relay at the end of each day, a register for registering the months of a year, a third relay operable under the control of said month and day registers at the end of each month, and means controlled by said third relay for controlling the step-by-step advance of said month register.

5. In a signaling system, a periodically operating relay, a fractional hour register operablestep-by-step in response to the operation of said relay, a register for registering the units and tens digits of the hours of a day operable step-by-step at the end of each hour under the joint control of said relay and said fractional hour register, a second relay operable under the control of said hour register at the end of each day, a register for registering the units and tens digits of the days of each month operable step-by-step under the control of said second relay at the end of each day, a register for registering the months of a year, a third rela operable under the control oi said month and day registers at the end of each month, means controlled by said third relay for controlling the step-by-step advance or said month register, means controlled by said second relay for operating said hour register an additional step at the end of each day, and additional means controlled by said third relay for operating said day register a variable number of steps at the end of each month depending upon the number of calendar days in the registered month. i

6. In a signaling system, a plurality of printercontrollers, a month, day and hour circuit, means for temporarily associating any one of said printer-controllers with said circuit, a plurality of registers for registering the fractional hour and the units and tens digits of the hour of the day, the units and tens digits of the day of the month and the month of the year, a periodically operating relay for controlling the step-by-step advance of said registers, and means for preventing said registers i'rom being advanced in response to the operation of said relay when any one of said printer-controllers is temporarily associated with said circuit.

'1. In a signaling system, a periodically operating relay, a signal transmitting circuit comprising a plurality of step-by-step registers operable by said relay to register various calendar and time periods including the hour and fraction thereof, the day and the month, means individual to each of said registers operable to advance its associated register step-by-step in order to reset the register in accordance with the correct calendar and time periods, and means for disconnecting said relay from said registers during the period of time said registers are being reset under control of said last-mentioned means.

8. In a signaling system, an impulse sender, fractional hour register means operated in response to impulses transmitted by said sender for registering the fractions of an hour, hour register means operated at the end of each hour under control of said fractional hour register, day register means operated at the end of each day under control of said hour register means, month register means operated at the end of each month under control of said day register means, marking conductors associated with said hour, day and month register means, and means controlled by said hour, day and month register means for marking said conductors in accordance with the tens and units digits of the registered hour, day and month.

9. In a signaling system, an impulse sender, fractional hour register means operated in response to impulses transmitted by said sender for registering the fractions of an hour, hour register means operated at the end of each hour under control of said fractional hour register, day register means operated at the end of each day under control of said hour register means, month register means operated at the end of each month under the control of said day register means, marking conductors associated with said registers, and means controlled by said register means for marking said conductors in accordance with the registered date and time.

10. In a signaling system, an impulse sender, fractional hour register means operated in response to impulses transmitted by said sender for registering the fractions of an hour, hour register means operated at the end of each hour under control of said fractional hour register, day register means operated at the end of each day under control of said hour register means, month register means operated at the end of each month under the control of said day register means, marking conductors individual to each of said registers, and means .controlled by said registers for marking the conductors individual thereto in accordance with the tens and units digits of the registered date and time.

11. In a signaling system, an impulse sender, a minute register operated step-by-step in response to impulses transmitted by said sender, a plurality of tens and units marking conductors adapted to be marked in accordance with the time registered, said register altering the marking of said units marking conductors at the end of each minute in accordance with the units digit of each minute registered therein, and means including said register for altering the marking of said tens marking conductors at the end of the ninth, nineteenth, twenty-ninth, thirty-ninth, forty-ninth and fifty-ninth minute of an hour.

12. In a signaling system, an impulse sender, a register having a plurality of wipers operable step-by-step at the end of each minute by impulses transmitted by said sender, a plurality of tens and units marking conductors, contacts associated with certain wipers of said register terminating said units digits conductors whereby said conductors are marked in accordancewith the units digit of the minutes of an hour registered during the step-by-step advancement of said wipers, contacts associated with the remaining wipers of said register terminating said tens digits conductors, and means including said remaining wipers operated under control of certain of the said remaining wipers for marking said tens digits marking conductors in accordance with the tens digit of the minutes of an hour registered during the step-by-step advancement of the said remaining wipers.

13. In a signaling system, an impulsing device, means operable stepby-step in response to impulses transmitted by said device for registering the minutes of an hour, means operable stepby-step at the end of each hour for registering the hours of a day, means operable step-by-step at the end of each day for registering the days of a month, means operable step-by-step at the end of each month for registering the months 12 of a year, and means controlled jointly by the setting of said month and day registering means for advancing said month registering means at the end of twenty-eight days in the month of February in the calendar years not divisible by four and for advancing said month registering means at the end of twenty-nine days in the month of February in the calendar years divisible I by four.

JOHN E. OSTLINE.

REFERENCES CITED The following references are of record in the tile 01 this patent:

UNITED STATES PATENTS