US988218A - Electrical signal-recording system. - Google Patents

Description

K A. L. soHM. l ELECTRICAL SIGNAL RECORDING SYSTEM.

Arnl'rion nu MAY zo, 190s. xmmwm) P2123, 1910.

Patented Mar. 28, 1911.

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, d/ ffy@ /Q A. L. SOHM. ELECTRICAL SIGNAL RECORDING SYSTEM. APrLH1qA'4r1o-1iu1j'11gp 145x219, 1,998. nENnwED H1B. 23, 1910.

Patented Mar. 28, 1911.

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A. L. SOI-IM. ELECTRICAL SIGNAL RECORDING SYSTEM. APPLIUATION FILED my zo, 190e4 RENEWBD PEB. 2s, 1910.

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Patented Mar. 28, 1911.

ALFRED L SOHM, 0F WHITTIER, CALIFORNI RECORDING COMPANY, 0F LOS ANGELES,

TERRITORY.

A, ASSIGNOR T0 SOHM ELECTRIC SIGNAL & CALIFORNIA, A CORPORATION OF ARIZONA.

ELECTRICAL SIGNAL-RECORDING SYSTEM.

Specification of Letters Patent. Application and my ao, 190s, serial m. 433,941.

Patented Mar. 28, 1911. Renewed February 23, 1910. Serial No. 545,498.

To all whom it may concern.'

Be it known that I, ALFRED L. SoHM, a citizen of the United States, residing at Whittier, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Electrical Signal- Recording Systems, of which the following is a specification.

This invention relates to electric recording apparatus and has particular reference to an electric system adapted for recording the time of arrival and departure of employees, checking the movements of watchmen, and for transmitting and recording fire and burglar alarms or other signals where the time of the signal is to be recorded.

An important object of my invention is to rovide a system of the character specifiedp which will be more reliable and durable than apparatus at present in use for the same purpose.

Another object of the invention is to simplify the construction and very greatly lessen the cost of manufacture of apparatus of this character. f

A further object of the invent-ion is to produce an electric time recording system which will occupy much less space and require far less wire for its installation than any system of the character specified here tofore used.

Other objects and advantages of my invention will be apparent from the following specification in which reference is made to the accompanying drawing.

Figure 1 is a diagrammatic view of my system showing the arrangement and wiring of the various parts employed. Fig. 2 1s a front elevation of my recording mechanism. F'g. 3 is a detail cross section through the shafts carrying the station number stamping rolls, Fig. 4 is a side elevation of my recording mechanism, Fig. 5 is a detail plan view of time and Station lstamping rolls with parts of the operating mechanism therefor and Fig. 6 is a detail side elevation, with parts broken away, of a portion of the actuating mechanism for the time stamping rolls.

For purposes of illustration I have shown my inventlon as embodied in a combined fire alarm and employees time clock recording system.

My invention comprises numbered signal sending means whlch may be, for example,

.two w1re push buttons, manually or automatically operated, lire or burglar alarm signal apparatus, watchmans stations or switches or jacks to be operated by employees, combined with signal receiving and recording means adapted to atomatlcally register the time of signals and the number of the signal stations or signal sending means from which signals are sent.

The signal receiving and recordin means hereinafter referred to as the re'cor ing apparatus consists of spring driven clock work mechanism 1 designed to rotate hour and min. ute stamping rolls 2 and 3 which are employed to print upon a mechanically propelled tape t-he hour and minute a. In. or p. m. at which a signal is sent. The recording apparatus also comprises a plurality of number-Carr ing stamping rolls operated by suitable coils C and C, to print upon the tape the number of each station from which a signal is sent. For purposes of illustration I have shown two such stamping rolls, 5 designating the tens and 6 the units rolls. The movement of each stamping roll is controlled by a separate series of actuating coils C and C* as indicated in Fig. 3. It is obvious that three or more number stamping rolls may be employed by the addition of a corresponding number of additional series of coils C.

The rolls 5 and 6 are formed of rubber and are mounted upon separate shafts. The units roll 6 is carried by a shaft 7 mounted Within bearings 8 supported by an upstanding portion 9 of the frame 10 upon which the coils C and Ca are secured. The tens roll 5 is mounted upon a hollow shaft 11 which is rotatable upon the shaft 7. The shaft 8 carries a mutilated pinion 12 and the shaft 11 carries a mutilated pinion 13, said pinions being respectively in engagement with curved racks 14, 14 and 15, 15 as clearly illustrated in Figs. 2 and 5. The racks 14 and 14 are carried at the free end of rods or bars 16 and 16 (Fig. 2) pivoted at 17 and 17 adjacent the outer ends of the upstanding portion 9 of the frame l0, said ends being bent outward to bring rods or bars 16, 16 into alinement with mutilated gear 12 as indicated in Fig. 2. It will be obvious from an examination of Fig. 2 that depressing the free end of rod 16 will cause a partial revolution of stamping roll 6 in one direction and that a similar depression of rod or bar 16 will cause a partial revolution of said stamping roll in the opposite direction..

I have shown in F 2 ten coils, C", C1, C, C, C, C", C, C7, and C which control the operation of the units printin wheel. Each of these coils is provided wit an armature 2O ivoted to brackets 21 carried by the up-rlght portion 9 of the frame 10 and each armature is pivoted or otherwise flexibly secured at its free end to a vertical rod 22 extending loosely through an opening 23 in the horizontal portion of the rods or bars 16, 16. Each rod 22 is screwthreaded at its upper end and provided with a nut 24. It will thus be seen that when any one of the coils C is energized its armature will be attracted and will pull down the pivoted rod 16 or 16 with which it is connected a distance which will depend upon the position of the coil. Thus in Fig. 2 coil Co would cause' a depression of rod 16, and the subsequent rotation of stampin roll 6 to a much greater extent than coil The parts are so arranged that upon energizing coils C" it will cause a rotation of the units dial to such an extent as to brin the digit 0 into its uppermost position an similarly energizing any other coil illustrated in Fig. 2 will bring the number with which the said coil corresponds into the uppermost position.

The tens stamping dial is operated by a similar movement of rods 26, 26 actuated by similarly numbered coils C so that energizing units coils C1 and tens coil C*z will bring tens figure 2 andunits figure 1 uppermost on rolls 5 and 6, in a position to imprint the number 21 upon the tape 4. Units coil C1, it may be here e lained, is connected with one side of all of t e signal sending means, stations or jacks whose units figure is 1 and tens coil C2 is similarly connected with the other side of all of the sign tens figure is 2. Similarly each units coil is connected with all of the stations having a corresponding units number and each tens coil with all stations having the same tens number. This connection of stations and coils is clearly shown in Fig. 1 of the drawing and will be hereinafter more fully explained in connection with the operation of the recording apparatus.

In order that the time in hours and minutes may be recorded on the tape 4 adjacent the imprint of the number of the station from which a signal is sent I provide the hour and minute stamping rolls 2 and 3 adjacent rolls 5 and 6 and operate said time stamping rolls by means of a clock spring and separate hour and minute hand shafts which may be connected in any approved manner to cause the minute shaft to revolve twenty-four times to every revolution of the` al sending means whosek hour hand shaft. This mechanism which forms no part of my present improvement is contained within a case 30.

The hour shaft 31 is rotatably mounted upon the minute hand shaft 30 and is caused to make a complete revolution eve twenty-four hours by the rotation of a sha 32 which transmits its motion to shaft 31 by means of gears and pinions 33, 34, 35 and 36 (Fig. 4). The hour shaft carries the stamping roll 2 at its free end upon the stamping roll 2 is formed two sets of numbers from 1 to 12 one set having the letters a. m. adjacent thereto and the other set having the letters p. m. adjacent thereto as shown. The minute stamping roll 3 is carried-at the free end of shaft 30 which is caused by the llock work mechanism to rotate once every our.

In order that the hour and minute at which a signal is sent may be stamped legibly and in the correct position upon the tape 4 I provide mechanism to hold the numbers on the time stamping rolls in an operative glosition until an hour, in the case of roll o. 2, and a minute in the case of roll No. 3, has ex ired. By reference to Figs. 4 and 6 it will seen that ratchet wheels 40 and 41 are associated with rolls 2 and 3 respectively. Ratchet wheel 40 is ri 'dly secured to roll 2 and ratchet wheel 41 1s r1 'dly secured to roll 3. By reference to ig. 6 it will be seen that ratchet wheel 40 and roll 2 connected therewith are rotated by the action of a spring arm 42 ri idly Secured to shaft 31 and that ratchet w eel 41 and roll 3 connected therewith receive their motion from spring arm 43 rigidly secured to shaft 30. Spring arm 42 bears against a pin 44 and sprin arm 43 bears against a similar pin 45, pins 44 and 45 being carried by ratchet wheels 40 and 41 respectively.

Secured upon the supporting plate 46 by a standard 47v is a rod 48 having an arm 49 carryin at the free end of an extension 49', dispose at a right angle to arm 49 a pawl 50 which is pressed b spring 51 into engagement with the teet of ratchet wheel 41 secured to the roll 3. The pawl 50 prevents the rotation of roll 3 until said pawl is thrown out of engagement with said ratchet wheel by the rotation of the cam 52 carried by a second hand-shaft 52 which makes a complete revolution every sixty seconds. It will thus be seen that the shaft- 32 in its continuous rotation produces tension in the spring 43 and that as the pawl 50 is thrown out of engagement with the teeth of ratchet wheel 41 every sixty seconds said ratchet wheel and the stamping roll 3 will be advanced one-sixtieth of a complete revolution every sixty seconds. Similarly ratchet wheel 40 is held a ainst rotation by a pawl 53 which is carrie by a standard 54 and is pressed by spring 55 against the teeth of ratchet wheel 40. Pawl 53 carries an offset arm 53 having an inclined surface at the end thereof adapted to be en ged by a pin 43 carried by wheel 43. awl 53 is designed to hold ratchet wheel 40 in each of its twenty-four positions for a period of one hour until released by the engagement of pin 43 carried by ratchet wheel 43 against the offset arm 53 said pin engaging said offset arm once during every revolution of ratchet wheel 41 and throwing it out of engagement with the teeth of ratchet wheel 40 permitting said last named wheel to malte one-twentyfourth of a revolution. It will thus be seen that the time-stamping rolls are so operated by clock work mechanism that they are at all times in a positionto imprint upon the ta e 4 the hour and mlnute at which a signa is received.

The means by which the time and numbei-ing rolls are caused to produce an im pression on the tape 4 comprises a coll D suitably carried by the supporting frame 60 secured to the plate 46 as shown in Flgs. 2 and 4. The coil D is hollow and 1s provided adjacent its upper end with an armature 61 secured to a plunger 66 intermediate the ends of the latter. The lower end of the plunger 66 is provided with a head 67 designed to press the tape 4 against the time I and numbering rolls 2, 3, 5 and 6 (see Fig.

2). Secured to the upper end of the plunger 66 is an arm 67 pivoted at 68 and normally pressed upward by spring 69. The spring 69 is put under increased tension when the coil D is energized and the plunger lowered.

The free end of the rod 67* is pivoted at 70 to a cam bar 71 the lower end of which is adapted to abut against and depress the pivted arm 72 carrying a awl 73 in engagement with the teeth of t e ratchet wheel 74 to which wheel is secured ta e advancing roll 75 between which and friction roll 76 the tape 4 is held.

It will be noted by reference to Fig. 2 that during the first portion of the downward movement of plunger 66 the cam rod 71 is moved downward and produces a partial rotation of the arm 72 about the shaft 78 thereby advancing the tape 4 a predetermined distance. As the cam rod 71 continues its downward movement the cam surface 79 thereon engages a pin 80 which by its action causes the lower end of the cam rod 71 to move in toward coil d until said lower end is no lon er in engagement with the arm 72 and is free to move downward vwithout depressing said arm 72. As a result of this movement when the head 67 of plunger 66 is about to contact with tape 4 the tape advancing roll 75 is at rest so that a clear impression is produced. Guide pin 81 prevents the lower end of cam rod 71 from being thrown into engagement with tape guiding roll 82 which coperates with a similar roll 83 to maintain the tape in the correct position to receive impressions from the stamping roll.

'hen the coil D is denergized cam rod 71 is raised by the action of sprin@r 69 into a position to repeat the operation iereinbefore described. As soon as the lower end of cam rod 71 is thrown out of engagement with the arm 72, said arm is raised to its original position by the action of spring 84 secured to shaft 78.

The tape 4 is carried by a reel 85 and after ing unwound therefrom and printed as hereinbefore described, it is delivered to a suitable basket or other receptacle or if preferred, it may be re-wound upon a reel.

The impression is produced upon the tape reason of interposing between the tape c 4 b andy the stamping rolls an inking ribbon 90 wound upon a reel 91 which 1s mounted upon a shaft 92 and withdrawn therefrom upon a reel 93 by the action of a pawl 94 acting upon the teeth of a ratchet wheel 95 as illustrated in Fig. 2. The pawl is secured to an off-set extension of the arm 72 which is caused to rock upon the shaft 78 in the manner hereinbefore set forth. The receiving reel 93 is loosely mounted upon a shaft 96 supported in the frame Work as illustrated. v

The electrical connection of the various parts of the apparatus will now be described. By reference to Fig. 4,' it will be seen that each of the coils C and C* are carried by, but insulated from the metal frame 10, and that a rod or bar 100 is secured to each of the said coils adjacent the upper portion thereof. Vhen the armatures 20 are attracted by the coils, the rods 22 secured thereto, and which are electrically connected with the frame 10, will contact with said rod 100 for a purpose to be hereinafter described. By reference to Figs. 2 and 4 it will be noted that four spring contact arms E, E1,.E2 and E3 are carried by the plate 46 and disposed in proximity to pivoted arm 67. These contact arms are suitably insulated from the plate 46 and from each other. The springs E1, E2 and E3 have their free ends disposed beneath the arm 67 so that when said arm 67 is pulled down by reason of its connection with armature 61, it will contact with spring arm El, pressing the same out of its normal engagement with Spring arm E and pressing arm E2 into contact with arm E3 for a purpose to bev hereinafter described. Spring arms E and E1L are normally in electrical contact with each other. The arm E1 is provided on its lower surface adjacent its outer end with a button F of insulating material which prevents electrical contact between arms E1 and E2. lfVhen, however, the pivoted arm 67 is lowered, spring arms E2 and E3 are in electrical contact.

By reference to Fig. 1 it will be noted that 100 signal stations, numbered from R to R are shown at the left-hand side of the figure, and that all the stationsjnumbered above 10, havin the same units di 't are connected, and similarly that all of tions numbered above 10, havin the same tens digit, are connected, an that ten units digit wires and tenA tens digit wires connect all of the signal stations with the recording apparatus indicated at the right of the figure, the tens digit wires being illustrated above the units vdigit wires.

The stations numbered below 10 are each connected with the stations having a corresponding tens digit and also with a'common return wire CR.

As has been heretofore explained, a signal from any station in the series numbered above 10, will cause a current to energize a units roll coil corresponding to the units digit of the number of the station, and the tens roll coil corresponding to the tens di 't of the number of the statlon, so that a s1 nal sent from station 34, for example, w l

venergize units coil C and tens coil C and bring the digit 4 on stamp roll 6, and digit 3 on stamp roll 5, into a position to imprint the number 34, upon the tape 4.

As the stations numbered below 10 are connected with the correspondingly numbered coils for operating the tens dial, it will be obvious that signals sent from said last named stations, will be recorded by the tens stamping roll 5, the circuit being completed through the line connecting each station with the similarly numbered coil C, and back through the common return wire CR. The circuit in the recordin apparatus will be hereinafter partic arly described.

The arrow 101, and the line 102 at each station, designate the contact elements of a burglar or similar alarm of any ordinary construction, the alarm being given by closing the contact between said elements.

It is obvious that 101 and 102 may desi nate the contact elements ofany signal sen ing apparatus, and also that several signal sending means, as for example, a watchmans station, or a thermostatic fire alarm, may be located at each station in addition to the burglar alarm, the alarm from said station being given when the contact elements of any such apparatus are closed.

Located between the signal station hereinbefore referred to, and the recording appatus, I have illustrated a series of jacks for the use of employees for recording the time of their arrival and departure.

The jacks numbered from A to A are connected as shown with the wires which connect stations having a corres onding units digit with the corresponding y numbered coil C and similar jacks numbered from B to B are connected with the wires which connect stations having similar tens digits with correspondingl numbered coil C. One of the jacks C is connected with common return wire C R by a branch C R as shown.

It will be evident from the description of the operation of the silgnal sending means at stations from R to that when one of the units jacks A, is connected -by suitabllay connected jack plugs with a tens' jack that a current will be establishedthrough the correspondingly numbered units and tens operating coils C and C", 'and that the stamping rolls 5 and 6 will imprint a number on the tape corresponding to the number of the units and tens jacks connected. For example, if one of the connected plugs is inserted in units jack A', and the other end inserted in tens 'ack B', the units roll o rating coil C an the tens coil C will energized and the digit 6 on the units stampin roll and the di 't 3 on the tens stamping rofl will be presse against the tape 4 to imprint the number 36 thereon.

When'an employee whose number is below 10 wishes to record his number and the time of his arrival and departure, he inserts one plug in jack C R and the other into either a tens jack or units jack corresponding to his number. If for example, his number is 4, he inserts one jack lug in jack C R, and the other into )ack and his number will be recorded by the tens dial stamping roll on the tape 4.

It will be obviousthat with the apparatus shown, one hundred employees numbered from 0 to 99 inclusive, can record their numbers and time of arrival and departure on the tape 4, as hereinbefore descrlbed. The apparatus is however, ada ted for keeping a record of the time of arrival and departure }of ten additional employees, who record their time by inserting one plu into C R, and the other into a units jac corresponding to their number, as for example, employee No. A7 will insert one plug into jack C R and the other into units jack A. This will cause the number 7 to be imprinted on the tape 4, by the units stamping roll instead of the tens stamping roll. The difference in position on the tape relative to the imprint of the hour and minute will enable the time keeper to distinguish between the record of employees numbered from 0 to 9 and those numbered A, A1, A2, etc. The apparatus with two number stamping dials and twenty-one connecting wires is thus seen to be perfectly ada ted forrecording the time o arrival and eparture of 110 em loyees.

I wi now explain the operation of the recording apparatus, and certain details of construction and arrangement not heretofore set forth.

l another sign Units coils C are connected with a common wire E, which leads to the itive side of battey B, while tens coils are each connecte by a common wire El, with the negative side of battery B. The common return wire C R connects with the wire E through a relay coil R as illustrated. Adjacent one end of the relay coil R, is an armature r, which when the said coil is energized, is attracted into contact with contact arm r. The armature r is carried by and in electrical communication with the frame l0 of the machine.

To illustrate the operation of the system, consider a signal sent from station R43 or a signal sent by employee No. 43 by connectin tens jack B with units jack A8, as herein efore described, the circuit will be completed through tens coil C, common wire E1, battery B, common wire E, units coil C, and back to the signal station. When however, coils C and Cs are energized, the adjacent armatures 20 Fig. 2), will be attracted and the lower en of the vertical rods 22 brought into contact with the conductor 100, in the case ,of units coil, and 100 in the case of the tens coil. Whenthese contacts are made, the current will flow along conductor 100 to E1, through battery B to printing coil D (see Fig. 2) through spring contact points E1 and E by a connecting wire S, to the conductor 100', and back to conductor 100, through the frame 10 of the machine.

The passage of the current through coil D energizes it` and forces the plunger 66 downward as herein described. The downward movement of the plunger forces the pivoted arm 67 against contact spring E1 and opens the circuit at contact springs E and E1, thereby returning the system to its normal positiin ready to receive and record Where a signal is sent from a station numbered below 10, or by an employee whose number is below 10, the circuit is as follows, considering for example, that number 5 is to be recorded on the tape: from R5 or B5 to C, through common wire E1, through battery B, common wire E, through relay coil R, and back to the signal station by common return C R. When coil Cals is energized however, the armature 20 associated therewith, is attracted and conductor 100 isbrought into electrical contact through rod 22 (Fig. 2) with frame 10 as described. Similarly the relay coil R being energized attracts armature r bringing it into contact with contact arm r1. The current from battery B will then flow along common wire E through printing coil D, spring contacts E1 and E connecting wire S, conductor 100 to frame 10, armature r, contact arm r1, to common wire` E1, back to the battery.

When an alarm is used in connection with the recording ap aratus, a switch T of any desired construction and a bell V, are connected between the negative side of battery B and contact spring E3, as indicated.

Vhen switch T is closed, and the pivoted arm 67 (Fig. 2) is depressed, bringing spring contact arm E2, into contact with spring contact arm E3, the current from battery B will How through the bell sounding an alarm as long as the coil D is energized. When however, the coil D is denergized, the pivoted arm 67 will be raised by spring 69, and the contact between the contact spring E2 and E3 will be broken, and the recording apparatus will be ready to receive and record other signals.

It is of course to be understood that a single set of signal sending means may be employed in connection with the recording apparatus, and that the applicants system is Well adapted for use in an outdoor fire alarm or a police call system, or for any other use where signals are to be sent to and recorded at a central station, an identifying number at the location of the station from which a signal is sent being recorded either alone or preferably in connection with a record of the time of the signal.

Having described my invention, I claim:

1. A device of the character described, comprising a plurality of numbered signal sending means, means to record any selected digit from 0 to 9 in the units place on a,y

suitable receiving medium, means to record any selected one of a series of digits in the tens place on said receiving medium, a series of coils corresponding in number to the units digits and adapted upon'being energized to select the digit to be recorded in the units place by the first named recording means, a series of coils corresponding in number to the tens digits and adapted upon being energized, to select the digit to be recorded in the tens place by the second named recording means, each of said units digit-selecting coils being in electrical communication with all signal sending means whose unit digit corresponds to the units digit, the selection of which is controlled thereby, and each of said tens digit-selecting coils being in electrical communication with all signal sending means whose tens digit corresponds to the tens digit, the selection of which 1s controlled thereby, electrically actuated means to produce forcible contact between said recording means and said receiving medium, said contact means being adapted to be energized by a local battery circuit and means to automatically close said local battery circuit through said contacting means when said recording means is in operative position, substantially as described.

2. A device of the character described, comprising a plurality of numbered signal sending means, a units digit-carrying stamping roll adapted to im rint the digits carried thereby upon a suitab e receivin medium, a tens digit-carrying stamping rol adapted to imprint the digits carried t ereby on a suitable receiving medium to the left of the impressions of the first named roll, a series of coils corresponding in number to the digits on the rst named coil and adapted upon being energized, to select the digit to be imrinted thereby, a series of coils corresponding in number to the digits on the second named stamping roll, and adapted to select the digit to be imprinted thereby, each of the digits-selecting coils of the first named series being in electrical communication with all signal sending means the units digit of whose number corresponds to the digit, the selection of which is controlled thereby and each of the di 't-selecting coils in the second named series ing in electrical communication with all signal sending means, the tens di 't of whose number corresponds to the digit, the selection of which is controlled thereby, electrically actuated means to effect forcible contact between said stamping rolls and said receivin medium, said contacting means being a apted to be energized by a local battery circuit and means actuated by the digitselecting coils to close said local circuit through said contacting means, substantially as described.

3. A device of the character described, comprising a series of ten coils each adapted to control the recording of a different digit, a second series of coils each also adapted to control the recording of a different digit, a series of ten jacks numbers from 0 to 9, each jack being electrically connected with the coil of the first named series adapted to control the recording of a correspondingly numbered digit, and a second series of jacks numbered to correspond with the digits, the recording of which is controlled by the coils of the second named series, and each jack being electrically connected with the coil in said last named series adapted to control the recording of a correspondingly numbered digit, each of said coils being in electrical communication with each other, and a jack in communication with the op osite side ofv each of said coils from that wlth which the remaining jacks are connected, substantially as described.

4. A device of the character described, comprising a units digit stamping means, a series of ten selective coils adapted to selectthe digit to be stamped thereby, a tens digit stamping means, and a series of selective coils adapted to select the di 't to be stamped thereb a series of ten Jacks connected with coi s of the first named series and a series of jacks corresponding in number to the last named coils and connected therewith, and a single jack electrically connected with each of the selective coils, substantially as described.

5. In a device of the character described recording means comprising a Hguralityof number-carrying stamping ro pinions connected therewith, racks e said pinions, said racks being carrie at t e free ends of pivoted bars, an alined series of coils located in proximity to said bars and armatures connected with said bars and located within the range of influence of said coils, said parts bein so disposed that upon energizing any coil, the adjacent rod will be rocked upon its pivot throu h an arc dependent upon the relative distance of the coil from the said pivot, substantially as described.

6. In a device of the character described, recording means comprisin a numbercarrying units stamping rol, a mutilated pinion connected therewith, racks carried by pivoted rods disposed at opposite sides of said pinion, each rack being adapted upon being actuated to engage said pinion and effect its partial rotation, means to advance n tape in roximity to said stamping roll, a series o alined coils corres ondmg in number to the numbers on the ro 1, said coils being dis sed in proximity to said rackcarrying ars, and each of said coils being adapted uponl being energized, to rock one of said rods on its pivot through an arc approximately inversely proportional to the distance of the coil from the said pivot, and electrically actuated means thrown into operation by energizing said coils to advance the said tape and to thereafter press the said tape and the adjacent number into contact to cause an impression of said number to be imprinted upon said tape, substantially as described.

7. In an electrically operated signal re! cording apparatus, hour and minute stamping rolls, shafts carrying the same, an auxiliary shaft, ratchet wheels associated with said hour and minute stamping rolls, spring actuated means to rotate the hour stamping roll-carrying shaft once in twenty-four hours, the minute stampin roll-carrying shaft once in one hour, an the auxiliary shaft once in one minute, springs rigidly secured to said first named hour and minute shafts, and adapted to be put under tension by the rotation of the said shafts, pawls engaging said ratchets, adapted to normally ho d the same against rotation and means actuated by the auxiliary shaft to throw one of the said pawls out of en ement with the ratchet wheel associated wit the minute stamping roll once every minute, and means actuated by the last named ratchet wheel to throw the other of said pawls out of engagement with the ratchet associated with rthe hour stamping roll once every hour.

8. In apparatus of the character described, a printing roll, means to partially rotate the same in either direction, comprising pivotally mounted levers, a plurality of electro-magnets arranged near each of said levers and at different distances from its pivotal connection, a plurality of armatures connected with each of said levers to cooperate with the electro-magnets and means to close a circuit, including a selected one of said electro-magnets.

9. In apparatus of the character described, a plurality of rotatable printinfr rolls, means to independently rotate said rolls in either direction, comprising pivotally mounted levers, a plurality of electromagnets arranged near each of said levers and at ditferent distances from its pivot point, a plurality of armatures connected with the lever to coperate with said electro-magnets, means to feed a tape in proxvmity to said rolls and electrically operated means to press said tape in engagement with said rolls. l

10. In apparatus of the character described, a plurality of rotatable printing rolls provided with numerals, swinging levers to partially rotate said rolls, and a plurality of electro-magnets to move said levers, m'eans to energize a certain of said electromagnets to cause the rotation of oneof the rolls to bring a corresponding selected numeral into an operative position, apparatus to conduct a tape in operative relation to the rolls, electrically actuated means to press the tape into engagement with said rolls, and means to close a circuit to effect the operation of the electrically actuated means, after the rolls have been moved by the energized electro-magnets.

11. In apparatus of the 'character described, recording means, comprising rotatable rolls provided with a plurality of numerals, means to rotate said rolls, time stamping means, apparatus to conduct a tape in proximity to said time stamping means and recording means, an electrically actuated device to press said tape into engagement with said time stamping and recording means, and means to advance said ta e.

llQ. In apparatus of the character described, a rotatable roll provided with symbols, a shaft with which said roll is connected, a plurality of swinging levers to rotate said shaft in opposite directions, a plurality of electro-magnets arranged at different distances from the pivot points of said levers, a plurality of armatures connected with said levers to be moved by said electro-magnets, and means to energize certain of said electro-magnets. p

In testimony whereof I at'lx my signature in presence of two witnesses.

ALFRED L. SOHM.

Witnesses:

H. E. JONES, WV. L. CRAIG.

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