US1050780A - System and apparatus for recording electric signals. - Google Patents

Description

l W. W. ALBXANDEMZ E'. T. KBIM. 1:. 12mm, ADMINI-STRATOWOP W. W'.jALEXANp'BR,1111011);v SYSTEM AND APPARATUS POR RECORDING ELECTRIC SIGNALS.

I /Q Q S Q S/ .WT i!! W. W. ALEXANDER & E. T.-KE1M. 'E. T. KEIM, ADMINISTRATOR OP W. W. ALEXANDER, DBC'D. SYSTEM AND APPARATUS .POR RBGORDNG'ELBCTRIG SIGN-ALS.

-Paented JaI1'.21,-191I3.

` Y -APLIGATION FILED 11213.19, 191'1.' 1,059,780

9 SHEETS-'SHEET 2.

IVTNESSES:

W. VW.ALEXANDER Az E. T. KEIM. T. KEIM, ADMINISTRATOR DI'. W. W. ALEXANDREi DEOD. SYSTEM AE APPARATUS EOE EEGOEDING ELECTRIC SEGNALE. 1,050,780.`

'APPLIGAIION FLED APR.19, 1911."

' Patented Jan. 21, 1913.

9 `SHEETSI-SHEET 3.

TVI/E/VTOR W. WLALEXANDBR & E. T. 4KEIM. E. T. Kmmnmmsmo orlw. w. ALEXANDER, Dnojn. SYSTEEM AND APPARATUS FOR RECORDING ELECTRIC SIGNALS.

APPLIOATION FILED APR. 19, 191'1.

' f Patented Jan. 21, 1913.

9 sHnETssHEET 4.

W. Wl ALEXANDER & E. T. KEIM. E. T. KEIM, ADMINISTRATOR o r w. w. lALEXANDRE, DEG'D. SYSTEM`AND APPARATUS .FOR RECORDING ELECTRIC SIGNALS.

- f APPLICATION FILED APR. 19, l'1911. 1,050,780. l

Patented .1311.21, 1913.

' 9 sHEE'TssHEBT 5.

w/vEssEs.

f TTORNEY. N

l -W. W. ALEXANDER & B. T. KBII'M., E. 121ml) ADMINISTRATOR or W. W. ALEXANDER, DBU'D.

SYSTEM AND APPARATUS POB BEGJRDING ELECTRIC `SIGfNALS.

. I APPLICATION FILED APR.19,1911. 1,050,780. Patented L a,1`1.21,.191;s.

I o SHEETS-SHEET 1.

WL W. ALEXANDER & E.- T. KEIMJ.

E. T. KEIM, ADMINISTRATOR OP-W. W. ALEXANDER, DEGD. SYSTEM AND APPARATUS EOEEEGOEDING ELECTRIC SIGNALS.

Paented Jan-21,1913

e'sEEETssHEET APPLICATION FILED APR.19, 1911 W. W. ALEXANDER & E. T. KEIM. E. T. um, ADMINISTRATOR or w. W. ALEXANDER; Imm).4 SYSTEM. AND APPARATUS FOB. RECORDING ELECTRIC SGNALS.

APTLGATION FILED APB.19, 1911.`

Patented t13411.21, 1913.

0 SHEETS-SHEET 9.

.am t

.i sTArwr-nir OFFICE.

'WILLIAM W. ALEXANDER AND EDWARD T. KEIM, or DENVER, COLORADO; SAID KEIN;

.ADMINISTRATOR OF SAID ALEXANDER, DECEASED, ASSIGNOR, BY MESNE ASSTCN- MENTS, TO THE PROTECTIVE SIGNAL MANUFACTURING COMPANY, A CORPORATION OF COLORADO.

srjsfrisivr 'AND ArrARA'rUs ron REOORDINGAELECTRIO sreNALs;

To all whom t mayconccm: Y

.Be it known that we, VILLIAM lV. ALEX- ANDER andEDWARD T. Kmmcitizens of the United Statesof America, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Systems and Apparatus for Recording Electric Signals, of which the following is a specification.

I' -10. Our invention relates to a system and apparatus 'for recordingl electrically transmitte'd signals and more particularly to the receiving instruments of telegraphic systems in which the transmitting instruments are `of 'a character .to transmit the respective numbers of the stations at which they are installed by an intermittent. opening or closmg of the electr-1c circuit in which they are connected.

I '2*0 The principalbbject of the present invenl ytion resides in the provision of an electromechanical instrument of simple construe'- tion by which diiferent signals or messages --sent from a number of stations in a syste-m 0f telegraphy, are automatically recorded the transmitting instrument, and a time- 40 recording device which is automatically Yactuated at regular intervals of predeter' minedA duration, to' produce upon the same "sheet a series of equidistant impressions for the purpose of establishing for future 44 5' reference the time of day at which the A"ually received. f In extensive telegraphlc systems of' the character to whichl our lnventionmore particularly appertaixis, aplurality of transmitting instruments are connected in one recorded signals or messages were individ- Specation of Letters Patent. I Patented all.. 21,- Application filed April 19, 1911. Serial No. 622,017. i

circuit with the central receiving instrument at different p oints'of the` line, and as it would be impractical to vplace allv the -st-ations of an extensive system in onescircuit', a number of, circuits are provided,l all of which may be `connected with one -common sourceofelectricity.

For the purpose of simplifying-.the constructlon of. the vreceiving instrument" as?.

well as to reduce 'the lamount of work vrequiredin examining, translating or .copyin the records,'or in filing them' forffuture re e'rence, -we combine in'-systems of Vthe above description-,in one instrument, a plu-i ralityA of alined sig'nalf recording `units -con nected respectively in the several 'circuits' in association with/lone record-sheet `which moves, transversely tothe-'line of unitsyand with one or ftwoftime recording devices'n placed at the ends` of the series of units so that all the impressions 'produced-bythe latter` will b e assembled-upon thefonefsh'eet togetherv with equidistant marginal impress1ons, which by their positions' relative to' the signal-records, determine atlfivhat jhours or fractions thereof, they v''ereJ received.-

In more extensive telegraphlc-systems the signal recordingunits may be'divide'd into two or more series which', while assembled in one instrument,A recordthe signals of `their respective units upon separate' sheets of paper which, however, are moy'e'd'byone `common#timeecontrolled mechanism,l I y In the accompanying -drawlngsan inst-rib ment is represented in which' t\vo series of signal-recording devices-each composed of thirteen un1ts,are assembled'to recordjtl'ie sof signals transmitted through their r'sp ec tive circuits u pon tWOcOntinuOUs sheets of paper, which are moved longitudinally transverse to the alinement ofthe units by one common Atiin'e-cmitroll'edA l'nechanism which' also serves to' actuate the time recording contrivances of which there are two forv each of the abovementioned series.

The several signal' recording vdevices comprised in one receiving instrument -are `identical in constructionV and f operate independently from each other and inasmuch as 'the construction of the said device involves an invention separate from the present one it sy i 1,050,780 .Y

has-been made thel subject ofA another application for patent. l V i In the drawings, in the various views of 'which like parts are similarly designated,

Figure 1, represents a plan view of the entire instrument asA outlined above, Fig. 2, a ront'ele'va'tion of the same, Fig. 3, a vertical section taken along the line 3-3 Fig.

1, Fig. a similar section taken along the line 4-4, Fig. 2, Fig. 5, a fragmentary the preceding figure, is actuated,Fig. 7, a

ragmentary view of'the continuous lsheet o'paper upon which the electric signals and the time atwhich they are received, are-rccorded. Fig. l8, a diagrammatic viewl of the electrical connections included inv the telegraphic system at the receivin vend of which the rccording-instrument'is installed,

Fig. A9, a side elevation of one of the devices -bywhich the signals are recorded upon the .2,5l

' Vvlevvof the part of the saiddevlce which -sheet shown-.inFig. 7. j Fig. l0, anenlarged carries the stylus by means of which theimpressions are produced, Fig.,11, alli'oriztmf tal section taken along-the line 11-11, Fig.

9, Fig, 12, a similar section along theline 'l2-12 Fig. 9. VFig. -l3,*a erspective view of the bell crank-leverl'nc uded in the construction-of the device shown in Fig. 9, Fig.

14, a Side elevatidn of one .of the contrivances designed to designate by impressions upon the marginalportions.' of the sheets shown in Fig. 7, the time at which the vari-d dra lous signals are recorded, Fig. 15, a section ,taken along the line 15d-15, Fig. 14,

16, an enlarged plan view of the part ofthe device shown in Fig. 14, which carries the stylus b means of which the impressions are prod uced, Fig. 17, an elevation of the mechanism 'of a transmitting `instrument of the character employed in telegraphie systems ofthe clas to which the present in- A vention, particular y -appertains, Figs. 18,

19, 20 and 21 enlarged sectional views taken alon the line 18-1'8, Fig. 9, respectively illus rating the positions successively assumed-bytlrestylus in recording a signal se 'to-the device shown in Fig. 9, and,

i lgs'. 22, 23, 24 and 25 similar V views taken along the line 22422, Fig. 14, to illustrate thesuccessivepositions of the stylus comprised in -the time-recording contrivance,

-whilen impression is being produced therebylponthe 4sheet shown in Fig. 7.

' Referrii `to the drawings by numerical .referenc.c aracters, `the numeral 2 designates the skeleton frame upon which the various oerating parts of the. instrument are assem led and which is preferably inclosed in a casing, which for `obvious reasons been omittadfrom the drawings.

' The signalrecording units, which as here- Y inbefore explained, are arranged in two groups, are .design'atedby the numeral 3, while the devices which aredisposedat opposite ends ofthe said series tol periodically record4 recurrent points offtmc, are ,i ndi.; cated'by the-character.4f/"- The continuous vsheets ofpaper'or--other suitable material upon which-the records are made, and designated in. the drawings 7 5 by the numeral .5, are wo1v1nd, uponspools.y 6 which are rotatably mounted at the`lower. portion of the frame 2. The "sligets- .QP-,area I led-'from the resplectiv s dols/throdgh'the medium of para eli- 'rollersfif'over-.w horizontally disposed nvlyplates wlch` provide strikingsurfaces fore-fthe stylifof the vseveral recording devices. which are '5a-re of 's.u licient widthjto receive the-.ima pressions of all-the recording .d'e'svio-e's'com prised in each of the respectlveseries.' if Y. 1 if. For thel purpose vof clearer4 illustrationithe record-sheets 5 have been representedfinvthe 100' various elevations and ysectionalv/iews of the wmgsvby means of hea dash-dot lines.` lhe time-controlled fee `mechtuiism "above referred to, consists'o f an electrof magnet 13, the windings owhich-are 105105 cated in. 'an .electric Ycircuit with -va resilient contact blade 14 and a therewith .engagin' contact-point15 bothof. whichare secure `in operative proximity to the pendulum 16 'of a clock movement 17 of Vordinary. con 110 struction, such as is shown in Fig. 6. Thependulum 1Q carries'a curved piece 18 which during each oscillation thereof. temporarily separates the contactA point 15' 'rom'the blade 14 witlrwhilchit 1snormally, in en- 115 gagement, with 4the result'that while the clock movement is in action,' thefimagnet 13 is periodically energized. 1

The armature. 19 of the:e1 ectromagnet is connected with a. leven 20-:which' is` ful,- .120 crumed upon .apostl'flml 'swhgh is at-A tached .at one pf its end ft the retracthg spring 22 which normally maintains the armature in the position in'whichit is separated from thecore of.themagneticcoil.4 A .125 spring-controlled pawl 23 pivotallymounted. atlthe opposite 'end-ofthe lever 20,` is disposed toengage during the movement of the amature 19 toward the magnet, with the teeth of a.' ratchetfwheel 24 and to move` 13o Iiis inscee the same about its axis of rotation until arrested by l ntact with an adjustable stop 25. YV hen the attractive torce oi the magnet. ceases, the: retracting spring 2i), and the spring 2G which acts directly upon the pawl, return. the latter to its original position vwhich is shown in full lines in Fig. 5 et the drawings, .and it will. thus be seen that during the uniform oscillatory movement of the pendulum 16 of. the clock movement the ratchetwheel is intermittently rotated at equal intervals and through arcs of equal length the extent of which may lbe varied by adjustment of the stop 25.

A spring pawl 2'? which constantly Aengages the teeth ofthewheel 24, is provided to prevent retrograde movement of the same, while an adjustable sto-p 28 limits the upward movement of the lever 20. The intermittent rotary motion of the ratchet wheel 24, is by means of a vpinion 29 secured upon its spindle transmitted to a gear-wheel 3()4 vwhich is mounted upon the vframe-EZ and -12 which as hereinbefore explained', are

the movement of the last mentioned wheel is by means of a. therewith concentric pinion 31 imparted .to one of the gear-wheels connected with the vwinding drums l0.`

It willbe understood from the above description that through the instrumentality 'of the gear train, the sheets 5 are wound upon the respective drums 10 at a. rate ot speed which is regulated by the movement of the clock and that in consequence, during tion shown inthe drawings, this associay which ordinarily strikes upon a gong or tion is established through the medium of the striking gear trainl? which periodically actuatcs `the lever 33' of the hammer pring tovaudibly announce the hours of the A contact 34 secured upon the clockframe in the path of the lever 33, constitutes a terminal of a normally open circuit in which the lever is connected through t-he medium of the metallic' parts lof the clock and the time-recording devices 3 each include an electromagnet 35, the coil of which is located in the said circuit- 1When at the end of each hour, or aliquot part thereof, the striking gear of the clock-movement is released to impart to the lever 33 a succession of oscillatory movements in. accordanee lcomprised, in each series.

ln the construe' with the number of the hour at which the action takes place, the armatures oit the various-magnets are as many times attracted to the cores thereoil by the intermittent closing of the circuit by contact of the lever with the terminal 34', and this series of movements ot each armature is transmitted to a. therewith associated stylus which is disposed to engage the sheet 5 as will' now be described.

Each of the time-recording devices comprises an oscillatory trame which is mounted'to move about a vertical axis between twohorizontal plates 44 and 45 on the supporting structure fwhich serve to support the various recording instruments The oscillatory clement. 75 consists of an'upright rod 7 8, the v ends oli which are journaled inopenings in the respective plates and upon which are secured two transverse bars 7 5 and 77 the lower one of which supports the electromagnet 35. 'The two bars areA connected at their rear ends by .a poise 80l anda second poise 8l is carried at the opposite end of the upper bar for the dpurpose of retard- `ing the movement of the frame about its axis oit' oscillation by their inertial tendency to remain in a. state of rest. A coiled. spring 79 which surrounds vthe portion of.

the spindle 78 above theiipper bar, is connected at its opposite ends respectively `to the latter and to the top-platel 44, to yield-.

ingly oppose a movement ofthe frame about its axis, from itsrnormal position o'f rest,

rlhe armature 83 of the magnet 35 is connected with a plate S4 which has an articulate connection with a block 85 on the rod 7 8 and which is held in its normal position by lmeans of a retracting spring l86 disposed between the plate 84 and the upper transverse bar 76 'of the frame 75. Projecting forwardly from the armature S3, is the stylus-arm 87 which is preferably composed of two convergent members which are con.- f.

nected at their outer extremities. One of these members carries two bea-ring blocks 90 which are adjustablyv secured by set-screws 91, and which serve to supportashaftff) upon which the downwardly project-ing stylus 88 is'rotatably mounted. A spring 92 coiled around the shaft 89 tends to maintain the stylus in its normal position in which it vslaiits slightly from the perpendicular in engagement with a stop 93 on the adjacent block 90 (see Fig. 22) and a second stop 94 secured to the upper bar 76 of the frame is provided to limit the upward movement of the arm 87. `The magnet 35 being in a circuit with the contact 34 andthe lever 33 of the striking movement of the clock as hereinbefore explained, attracts its armature..

each time the said, lever is actuated to strike the case and-during movement ot the armature, the point of the stylus 8S is brought in engagement witlrthe portion of the @disposed-upon the pla-tel 8, which in 'consequence isfpunctured. When lthe point of the stylus enters the surface oivthe recordl sheet, `thearmature583` has not yet completed' its downward movement with the -resultithat during` continuation of the s aid movement the.l stylus Vafter having` 'engaged the sheet, will be deliected about its axis of rotation and againstthe action of the spring 92 as' is shownin Fig; 23;

inasmuch as the sharp Ipoint of the stylus held against 'displacement inthe, perforation produced in the sheet' 5, it follows that its point of connection 'withithe arm 87 must move laterally with relation to the perpendicular passing; through its point ci contact with the sheet or with other words, that the oscillatory trame iscompelled to move about its 'axis until the circuit of the magnet is breken when the arm lwill move upwardly impelled by the action et thespring 86 while the trame is momentarily held in its. ad-v justed position by the inertia of the poises 80 and 81,(see Fig. Before the spring 79 has had time to overcome this inertial tendency, the magnet is again energized by the engagement. of the arm of the clocle movement with the sto`p Sli, during' its second stroke with the 'result that the' stylus 88,A which, during the upward motion of the,` arm 87 had been returned to its original position by the spring 92, will again engage the pheet 5, but this time'at a point spacedI from the puncture previously produced.

During the continued movementr of the armature toward the core of the magnet after the point of the stylus has entered the sheet, the stylus is again deflected as here: inbeicre explained and when during subsequent upward movement 4ofthe arm 87 in the period intervening' between two movements o't'the lever 33,1the stylus is again returned to its normal position, the frame.

l has again moved laterally a distance similar to that of its previous imevement, so that when by subsequent energizaticn of the magnet the armature is again attractedthe pointof the stylus will engage the sheet at a point spaced from the second puncture,l (see Fig. 25), and this operation will be repeated until the lever 33 has completed its succesf,

spo'ndin''9,` in number. with that of the hour at which the action took place and inasmuch' by the cloclrmovement, it will. be seen that*v at the expiration of a certain space of time, the sheet will bear a series of substantially equidistant impressions which individually indicate the successive hours of the day at which -they were produced.

To prevent the possibility of forming a faulty record by the stylus striking' beyond the edge of the sheet in case the latter becomes laterally displaced, two time recording instruments are placed at opposite ends ot each series of signal recording units and arranged so 'that' their stylus arms move laterally in the same direction.

` A portion of the record sheet as it appears after the instrument has beenin action for about one hour has been illustrated in Fig. 7 of the drawings in which the nu, merals 93 indicate the marginal impressions made by the time-recording devices and 94 thosevproduced by the signal recording units as will hereinafter be described. The portion lbetween the two successive time records `93, made respectively at the hours of four and five, represents,l of course, the distance the sheet traveled during one hour of time,

and as the movement of the paper is at all times uniform and 1n accordance with that lofthe clock-mechanism, the exact time at 'which a. signal record'is made on the sheet,

maybe accurately established by ruling the.

, sheet transversely in'ac'cordance with aliquot divisions of the hour, either before or after it is placed in the instrument. In the e: ample shown in the drawings, the spaces be tween these equidistant lines, designated by the numerals 95, each indicate five minutes of time and in addition to the transverse lines, lines 96 ruled parallelt the longitudivnal edges of the sheet are provided to separate the records' made. oy the different signal-recording units comprised in the series. By placing the numbers of the electric circuits with which the units are respectively connected, at the top of the longitudinal columns, as is shown in the drawing, the sheet after it has been detached from the main portion wound upon the spools of the instrument and properly dated, may be used at any future time to indicate the exact time at which asignal was transmitted :from a given station over a given circuit.

While the construction of the instruments by which the electric signals are transmitted to the receiving instrument does 'not form part of the present invention, I have-,shown iii-'Fig 17 of the drawings,'the mechanism of one of the call-boxes 100 of a lq'cal tele-- graphic system, an explanation dii,A which will aid to a great extent, in. conveying a ,clear understanding of theoperation ci? the st-ruineiit of the system, each time it is inatteso 5 signal recording devices which will herein alter be described, Each oit the call boxes above referred to isdesigncd to transmit a predetermined nui'nber to the receiving inactuated, by a succession' of electric impulses whichare produced by the alternate closing and opening oil the normally closed line-circuit in which said boxes included. The

i() number of impulses transmitted each time the mechanism ot the boX is actuated equals the sum of the units contained in the several numerals ,of which the number to be transmitted, is composed and the respective i values of these numerals are recorded or announced at the receiving end ot the system 'by increasing the length of the intervals between thelast and first impulses of the numbers which correspond with the quantities of the units contained in two successive numerals, over the uniform periods intervening vbetween the successive impulses whichA collectively represent the individual value'ot each numeral.

ln `the construction shown in Fig. l?, the

0 nipulation of an operating handle 38.

above described result. is obtained by means of a lrotary dislr 3G which is actuated by a sliring when the normally blocked gear train 3'?, associated therewith, is released by ma- The dislc has a plurality of peripheral notches 3i) which are arranged in groups, separated by enlaijged'spaces, in accordance with the numer-als contained in the number to be transmitted. ln theexainple shown, this 'nun'iber is 218 and the spaces between lthe iii-st two notches and the third one, and between the latter and the'following group ot' eight notches are accordingly made larger than 40 those between the notches con'iprised in each group. The peripheral edge of the disk 36 is normally engaged by the end of a resilientbrushflO, which is adapted to enter each of the notches 39 during the rotary movement he dislr 'without coming in Contact with e 'atiter, and the disk and the brush are c nnected respectively at opposite ends of a breaa in the normallyelf. l line-circuit. Each signal-recording unit has an electro- .-0 magnet Ll1 the-windings oi which are included in the normally open local circuitv which through a relay 42 shown in the diagrammatic representation in Fig.' 8 ot the drawings, is electrically connected with the .55 line'voircuit in which the transmitting instruments are disposed so that the electric impulses caused by actuation of the latter, will excite the magnet 41 at intervals corresponding in length with the spaces'between 66 the` notchesBQ in the disk'.

The electro-magnets L11 of the signal recording instruments are like that of the 'iereiiibet'ore described time recording ce- 1vice, each cured npon an oscillatory traine mounted to move about a Vertr termittently cal axis between the plates le and 15 on the frame The oscillatory elementlE-S consists oit spindle 4:6 theends oft' which are journaled in openings in the plates, 44 and and upon which are secured two transverse bars l? and 48, the lowei' one of which supports the electro-magnet 4l. rThe two bars are connected at their rear ends by a poise el) and the opposite end of the upper ba r carries a second poise tor the purpose hereinbetore described. A coiled spring 51 is connect-ed at its opposite ends respec tively to the upper bail ET and to the topplate lei toyieldingly oppose a movement ot the frame about its axis, and the armature 52 of the magnet 41 is connected with a plate 53 which has an articulate connection with a. block 5st on the rod 4&6, and which is held in its normal position by means of a retra-cting spring', disposed between the plate 53 and the upper transverse bar 47 of the frame 43. Projecting ford wardly from the armature plate 53, is the stylus-arm 56, formed, similar' Ato that of the time-recording instrument, of two convergent members which at their connected forward ends carry the stylus A which, by means ot' a nut 58 may be longitudinally adf justed to vary the distance of its point from the surface of the anvil plate S from which it is, normally, spaced. One of the members ot' the arm 56 carries two bearing-blocks 59 which are adjustably secured thereto by means of set-screws and'which serve to support a shaft 61 upon which a bell crank` (3Q is rotatably mounted. The normally upri ght arm G3, of the bell crank, which is oliset from the other laterally projecting arln 6l, is sharpened at its upper edge and in the operation of the device, serves as a pawl which by engagement with the teeth of a rack secured to a transverse bar 6G on the frame :2, moves the oscillatory frame 113 inabout its axis, as willhereinafter be more fully explained. A. spring 6? coiled around the shaft 61, is connected with the bell crank (52 and with one of the blocks 5S), to resiliently oppose a downward movenentofthe pawl-arm 63 about its axis.

rllhe normal position ofthe pawl-arni in which it slants slightly from the pcrpendicular, is determined by its engagement with the member of the arm 56 to which the blocks 59 are secured, and a stop (3S which is `fastened to the upper bar 47 ot the oscillatory frame, is disposed to be engaged by the laterally extending arm 64; of the bell-crank for the purpose of disengaging the pawl 63 from the rack when the arm 5G is in its u perniost position, as shown in Fig. 18 of t e drawings. The lower bar 48 of the frame, supports in addition to 'the elcctroinagnet 41, a second magnet 69 of smaller dimensions, whose ar ture YO secured to a plate 71 which is rcsiliently connected with a supthe armature 70 of port 72 which by means of standerdel l is .rugidlyy mounted' upon thebase bte l5 Windings'ot both the magnets L are connected in the saine local eirenit es is only during the intervals 'between two suc-` cessive energizatlons of the magnets, While, when .by the downward movement of the anni, 5G, the stylus if? is brought in engagementwitli the sheet o, to produce an iunggues4 sion thereon, the :trame is looked. against movement about 'its by the contact of coro of lthe same.

` When the parts ot'the signal-recording device, es above described are in their normal postn et rest (see Fig. 18') the stylus arm ott-is by the action of the spring 5 1 held in its highest position with the member S4 of the bell crank 52 lnengagement with the stop $8 and the paul-member S3 sla-nting:

tree .trom contact With the teeth I lthe rack 55, ,While the oscillatory frame is held yield; ingly at one end of the path in which it hes movement, by means of theospring l coiled around the upper-.end of the spindle e6.. 'Y s y v`When actuation et the disk 36 of the transmitting instrument shown in Fig. 17,'

a succession of electric impulses is transmitted through the line circuit to the re-f lay l2 and 'thence through 'the local circuit to thetwomegnets 4l and 6l) of t" recording device, the oscillatory Jframe rf-3 is at each impulse, locked against rotation by the engagement "of the armature 'YU of the small magnet with the core thereof es hereinbeore explained, after which the stylus arm 1s moved downwardly by the 'attractive :torce of the ietAgl, to. bring the\point of the stylus Il? forcibly in engsge nienttvith the portion the sheet 5, at .the time disposed upon the anvil. which, inconsequence is puncturedi During' the doive Werd movement of the stylus 'arm the .mem-

ber Gt of the `bell.-cranlr moved free from' en 'agement Withthe to 68 with the result that the pevvlfm'ember is returned by; the

spring 67, to its noinielposition in which f it slants slightly'from-the perpendicular 'engagement lwith the adjacent member of thearm 5 which Serves as a stoo to limit vits movement about its axis, asshown in Fig.

19. New, when by engagement of the brush 40 in thetransmitting instrument, with the peripheral space on the dish 36, between two successive notches 39m. the ma gnets lll end 69 are momentarilyl'deuergised, the

'the magnet-'69 `with the ne signal fraine 43 is egein tree to .rotate about its eine et oscillation, and the stylus arm isl impelled upwardly by the retreating spring 55. During this nioveme'ntoi. the stylus arm, the sherp edge or" the substantiall lupright pavvl member 63 ot 'the bell crank 62 is brought in engagement with the teeth of the rack 65 before the other member 64; engages thel stop olhwvith the result that .during the continued upward motion or the arm 56, the pavvl member is deliected about 'its airis of rotation, against the action of ,the 'spring 67 and,y inasmuch as the sharp edge of the said member is held against dis.

lplacement in one oi' the interdental spaces of the raclsf, into which it had entered, it follows that its point of connection with the arm must move laterally With-relation to the 'perpendicular passing through its point ot' contact with the rack or, in fact, that the oscillatory frame is compelled to nieve about its axis until by engegement of the crank-member 6e with the stop 68, thel pavvl member is once more freed from `engagernent With the teeth of the rack. 'l-lovvever, before the ann 56, Whose movement together with the trame sl-3, is retarded by theinertiavof the two poises i9 and'50,

has had time to coinolete its u Ward movement, (see Fig. 20) the magnets are again energized by the impulse transmitted thereto While the end of the brush 4:0 of the trensinitting instrument is in register With the notch ot' the contact disk 36 next to the peripheral space With which it pre viously was in Contact, with the result hat the movement of the frame i3 with the arm is arrested While the paWl is still in engagement with the rack, and vis thus held` against frotation While the stylus arm is again moved downwardly by the attractive force of the magnet lll, und the; stylus is once more brought' in engagement with the sheet 5, but this time at a point spaced from the puncture previously made in accordance with the length of the interval between thetWo impulses, by reason of the lateral movement .of tlfe frame in its plane or oscillation during the defiectory uio ment of the pawl, (seeFig. Zll= t commencement-.of the Anext period olf' energization of the magnets, the sharp l of the pavvl is 'againbrought in ment with the. reci: at a. point perpfL larly above the same While it 'was lower position and` before the spring Si the frame 43', has 'hadthe time to overcome the inertial tendency of the poises to 're'- main. in e state of rest, and when, during subsequent deflection of the pawl, the magnets are again excited, the stylus Willbe brought in Contact With-the paper at a point spaced from the second puncture in accordance with the length of the interval between the two impulses, and this action Will nel f notarse Y i be repeated until the entire signal-is transf with thenumber of notches in the contact disk of the transmitting instrument.

It will have been observed that the tent of the lateral movement of the 56 of the frame 43, duringthe period intervening between two successive impulses is proportionate to the angle of dellection oi' 'the pawl and in consequence. to the duration of the `said period, so that when the intervalbetween two electric impulses is lengthened the space between the respective punctures in the sheet 5 will be' proportionately increased. The result is that the unequal spacing' between the notches 39 'on .the dislr 36 will bveuaccurately represented in the record made upon the sheet and that` the number transmitted may be read at any time from the sheet by separately addingthe number of punctures comprised in each 1ou v e. vA platel 74e .which extends transversely overthe sheet in proximity to the line along whichit is engaged by the styli of the various recording devices, is provided to rest upward movement of the sheet with the stylus when the latter Vis being separated therefrom, and it will be understood that the longitudinal movement of the sheet is so lslow in comparison with the rapidity with whichthe succession of impulses arc transmitted and the puncturcs are produced that the latter will be arranged practically in one straight line transverse to the direction in which the paper is impelled over the anvil-plate 8.

In the diagrammatic view/Figa 8 of the drawings,two circuits have. een shown in connection with a corresponding number ot signal-recordingr units of the receiving' Ainstrument and with two time recording de-r vices, the various magnets and contact-members having' been indicated by the'same reterence numerals, employed inthe foregoing description.' The two normally closed lincor outside-circuits, are represented respectively by light and heavy dash-dot lines, the normally open, local circuits respectively by full and broken lines, the circuit oli-the time controlled mechanism by full lines, with the exception ot that part which is provided by thc metallic frame vand operating` parts of the clock, and which has been shawn in light broken lines. The reference. numeral JT designates the source oiC electricity oi the linecircuits and 91- that ot the local-circuits. Thc hereinbeiore referred to relays by 'which the main andlocal circuits are electrically connected are designated by the numerals xi2, 'a switch by which if so de sired, the clock-circuit may be broken, is designated in Figs. 8 and l by the numeral 99 and the transmitting instruments connoci ed in the line circuit arel indicated by the reference characters 100.

As the operation 'of theinstrument has been referred to at intervals during the courseoi the foregoing description, itwill only be necessary to outline it briefly at this point. The rollsotl paper or other material having been mounted upon the spools 6', in

the manner shown in Fig. 2, their ends are drawn over the guide -rollers 7v and the upper surfaces ot the intermediate anvil-plates 8, and securely lfastened to the winding drums 10 by means of the clamps 9.y The clock-'movement in electrical association with the feeding mechanism, .imparts anintermittent movement to the winding drums at a uniform. rate ot speed, and the time-re cordinpj instruments which are actuated by the striking movement of the clock will by the production ot a series Aof equidistant groups ot punctures, separately corresponding with `the numbers of the hours atgwhich they were made, establish a permanent rec- `ord of the time at` which the signals sent from the transmission instruments were received. Each time'one ci' the transmission instruments is actuated, its number is accurately recorded inthe-column of the 'sheet corresponding with the Vcircuit inl which it is located, by the spaced groups of punctures which present intelligible representations of the numbers transmitted.l

it will thus be observed that the invention provides an entirely automatic instrument for accurately and properly recording all the electric signals and the time at which they were received during an' indefinite length of time, requiring no attention except the winding' of the clock movement which, it so desired, may be automatically.accomplished by connecting' it with a masterclocl, and that by severing the portion of the sheet which has passed over the anvil plate` from .the roll at the termination of a determinate period of time and properly dating it, it may at any iuture time, be pro- `ducetl to provide an accurate and indis-tputable record of the timcand day at which a signal was transmitted from a given sta tion.

Having thus described our invention wha-ly we `claim and desire to secure by Letters- Patent is:

l.' ln a telegraphic receiving instrument, record sheet having a movement in one direction, adevice for recording telegraphic 2. Infatelegraphic lreceiving instrument, a record sheet' havinga movement in 'one direction, a device for recording telegraphic messages upon said sheet, "a relatively -iixed contrivance for producing'fimpressions upon y said sheet, and a v,move'ment adapted frop'ejrin odically actuate said coli-trivance, inv suce'es'- l sions which vary numerically' in .accordance with the numbers of the hours' at which they'. are produced.`

3. In a telegraphic receiving instrument, a record 4s heet having-a movement in one direction, adevice for recording telegra hic messages upon said sheet, afzfrelati,vely-'- Xed electrical contrivance tor producing impres sions upon said sheet, and a movement lin a circuit with said contrivance and adapted tol periodically transmit successionsof velectric impulses to the same, whichv vary numeri, callyfin the'mrder in which they are produced.

4. `vIn a telegraphic receiving instrument,

.a record sheet having a movement in one` direction, a device ,for recording .telegraphic messages upon said sheet, a relatively fixed: electrical contrivance for producing impressions upon said sheet, and a clock movement in a circuit Withsaid contrivance, adapted to periodically transmit successions of electric impulsesto the same, Which vary numerically vinlaccordanc'e with the numbers 'of the hours at which they are produced.

-5. In a telegraphic receiving instrument, a record sheet lhaving a movement in one direction, a device for recording telegraphic messages upon the said sheet, a relatively iixcd contrivance for producing impressions upon said sheet, and a clock including a striking movement connected With the said contrivance to actuate it periodically in successions numerically in accordance with the numbers of the hours of the day.

6. In a t'elegraphic receiving instrument, a record-sheet having a movement in one direction, a device for recording telefri'apliic messages upon vthe said sheet, a relatively fixed electrical contrivance for producing impressions upon said sheet, and a clock in? .cluding a striking ino-vement, in a circuit with said' contrivance to actuate the saine in correspondence With the motions ot the hammer-lever included therein.

7. In a telegraphic receiving instrument, 'a record-sheet having a movement in one direction, a device for recording telegraphic messages. upon lthe said sheet, an electromagnet, a vmember connected with the arma l ture thereofV to produce impressions-upon, the said sheet, fa mechanism to automatically change the position of the saidmember. relative to an impression produced upon said sheet, p rior to the production' of the next'.

impression during a succession of impulses transmitted to said magnet, and a clochmovement in a circuit with said magnet to periodically transmit thereto successions ont impulses varying numerically in the order in which they are produced.

S. vIn a' teleg'raphic receiving instrument, a record-sheet yhaving a movement in one direction, a device for recording telegrap'hi'c messages upon the said sheet, anelectromagnet, a member sonnected with the armature thereof -to produce impressions upon ,the said sheet, a mechanism to automatically change the positionof the said member rela- `tivejto an impression producedupon said sheet, prior to theproduction of the next impression during a succession 'ot impulses transmitted to said magnet, and a clockmo'vement' in' a circuit with said magnet to periodically transmit thereto successions of impulses vary-ing numerically in accordance ,Wit-h the numbers of the hours at which theyk are produced.

l9. In a telegraphic receiving instrument, .a record-sheet having a movement in one directiom'a device for recording telegraphic messages upon the vsaid sheet, anA electromagnet, a. member connected With the armature thereof to produce impressions upon `the said sheet, 'armechanism to automatically change the position of the said inember relative4 to an impression'v produced upon said sheet, priortc the production of the next impression during a succession of impulses transmitted vto'said magnet, and a` clock including a striking movement, in a circuit with said magnet to energize the same in correspondence With the movements of the hammer lever included therein.

10. In' a telegraphic receiving instrument, a record sheet having `a movement in one direction, a device for recording telegraphic messages upon the said sheet, an electromagnet, a member connected With the armature thereof to produce impressions upon the said sheet, al mechanism to auton'iatically 'change the position ot' the said member relative to an impression produced upon said sheet, prior to the production of the next impression during a succession ot impulses transmitted to said magnet, a clock including a striking movement in a circuit with said magnet to energize the same periodically in successions corresponding numerically With the numbers ot the hours oi the day.

ll. In 'a telegraphic receiving instrument, a recordsheet having a movement in one di'- rection, a device for recording telegraphic messagesupon the said sheet, a relatively fixed electrical contrivance for producing impressions upon said sheet, and a clcclr including a striking movement, in a circuit with vsaid contrivance to act-nate the same periodically in successions corresponding l ruimerically with the numbers ot the hours of' the day. Y

/1Q.In a \teiegrap`hic receiving instru4 130 ment, tWo record-sheets, means for moving said sheets in unison, devices for recording v tel'egraphic',messages upon the respective sheets, relatively iXed contrivances for producing impressions upon the respective sheets, and a clock movement adapted to 'periodically actuate said contrivances in;

successions varying numeriallyin the order' in which they are produced.

13. Vln a telegraphic receiving instrument,

a record sheet, a device for recording telegraphic messages thereon, a clock including ya time-measuring movement and astrikingv A movement, a mechanism actuated by said 'i5 time measuring movement to move said sheet, anda contrivance orproducing impressions upon the sheet, connected to be actuated in accordance with the motions of vthe hammer lever included in said 'striking movement. s

14. In a telegraphic receiving instrument,

,a record-sheet, a device for recording tele graphic messagesjhereon, a contrivance for producing impressions upon' said sheet, a

clock movement connected with said contrivance to periodically actuate the same in s'uccessions varying nuinerically in the rorder in which they are produced, and mechanism associated with the said movement for movv ing said sheet. py 15. In a telegraphic receiving instrument,

a record-'sheet having a movement in one direction, a device for recording telegraphic messages upon the said` sheet, an electromagnet, a member connected with the armature thereof to produce impressions upon said sheet, a mechanism-.actuated by the movement of said armature, to change the positiono the said member relative to an 40 impression produced upon said sheet, prior to the production' of the next impression during a succession of electric impulses transmitted. to said` magnet, and a 'clock' movementin a circuit with said magnet to periodically transmit thereto successions of f .impulses varying numericall,1 in the order in which they are produced.

16. The combination With a telegraphic transmitter, of a 'receiving instrument including an electromagnet 1n a circuit with 50 said transmitter, a member associated with the armature of said magnet for producing impressions upon a suitable surface, and

l'means actuated by the movement of said armature to change the position of the said member relative to an impression produced upon said surface, 'prior to the production of the next impression When a succession of impulses are transmitted to the said magnet.

17. ln atelegraphic receiving instrument, a record sheet having a` movement in one direction, anelectro-magnet, a member asso ciated with the armature thereof to produceIW y impressions upon said sheet, and means .M actuated by the movement of said armature to move the said member after an impression is produced upon said sheet, in a direction transverse to tne direction of move- Inen't of the same, and prior to the production of the next impression when a succession of impulses are transmitted' to vsaid magnet.

18.` The combination with atelcgraphicl transmitter, of a receiving instrument including an electro-magnet in a circuit with said transmit-iter, a member associated With the armature 'of said magnet for producing impressions upon a suit-able surface, Aand means actuated by the movement oit the armature of the said magnet, to move the SQ said member step by step by changing its position relative to each impression produced upon said surface, prior to the yproduction of the next succeeding impression when succession of impulses are transmitted to the said magnet.

In testimony whereofvve have atiixed our signatures in presence of two witnesses.

LLIAM W. ALEXANDER. EDWARD T. KEIM.

Witnesses:

S. C. CHmsrrAN, F. H. Cono.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner oi Patente,

' Washington, D. C."

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