US1275657A - Electrically-operating printing device. - Google Patents

Description

, AI R. BULLOCK ELECTRICALLY OPERATINGXRINTING DEVICE 4 APPLICATION FILED APR-24.-l913. 1,275,657. malted Aug. 13, 1918.

v 4 SHEETS-SHEET I.

yn. B-ULLOCK. "E LECTRICAlLY OPERATINZG PRINTING DEVICE.

APPLICATION mm APR-24. 1913. I v 1,275,657. Patented Aug. 13,-191&

4 SHEETS-SHEET 2.

srATEs PATENT OFFICE.

ABTHlJ'R BULIIQQK, OFQPEV'ELAND, OHIO...

To all whom it may concern:

-Beit known that I, ARTHUR R. BULLOCK,

a citizen of the United States, residing at 7 Cleveland in the county of Ouyahoga and State of hio, have invented acertaln'new and useful Improvement in Electrically- Operating Printing Devices, of-which the following is a full, clear, and exact description.

This invention relates to a mechanism for automatically causing the selectionof print ing elements according to a predetermined relationship.

The invention herein disclosed i applicable to linotype machines, typese ting machines or snnilar machines, as Well as to printing machines such; as typewriters and similar machines.

sired legend.

' its is well For purposes of disclosure, I will describe my invention as applied to a type writing machine, but this orms no limitation upon its other uses.

Generally speaking, his invention, as applied to typewriters, has for its object to provide atypewriter, which will automatically write predetermined legends, such as words, phrases or sentences, all of which cept that theremight be slight changes"rea form. Good custom and business etiquette latin'g to dates prices' or similar matter.

But it is-however, considered bad business form tosencl out these letters as aprlnted u demand that a typewritten letter be ,sent,

and therefore there is in many businesses a, q needless waste ot'time and energy in prepare 1 ing such letters by ordinary manual meth-L 'ods. A

By this invention the loss of time and energy incident to such letters as well as expense may be largely eliminated, for the typewriting can be made largely automatic in the writing of the various stereotype parts of the letter, stopping at such time as necessaryv for the operator to insert the special ELncrnIcaLLY-orEnArme ranvrme EVICE,

, Sp ification of retiremen Patented Aug. 13,1918; 3 Application filed April 24, 1913.. Serial No. 763,200.

item or matterand finally producing a-fin- I ished. letter largely, or perhaps wholly automatically written, yet presenting all the features ofa manually typewritten letter. Another feature of a machine of this character lies in the fact that the stenographer or operator is saved a large amount of needless labor, thereby making it possible for time, and to do it more efliciently.

the operator to do more work in a given p I- am aware that it has been proposed to place, the type letters of a word or phrase cause the words or phrases to be printed by the oneoperation of the type bar. My deof limited extent upon a single type bar, so that an operation of the singlebanwill vice difi'ers from such constructions in that the individual type bars carrying the letters composing the legend are operated; success'ively and in proper sequence.

As will readily be seen this automatic writing may, not only be a word orphrase,

multiplied toany extent.

but a sentenceor a suc cessionof. sentences such automatic t'y'pewriting by. the instrumentality of a typewriter. lie'sjin the fact that all the peculiarities time particular machine appear throughout the automati- .cally written part, so that there will be no typographical differences between the auto'-.

matically written part and thehand written part.

.Furthermore, the machine of this invention malfres it possible to cause the type to make impressions of varying strength,-

thereby more clearly simulating the manually written part, for it is very well'known that in manually'written letters all the i1npressions of the letters are not of equal strength, due to the fact that the operator does not press all the keys with equal pressure,

"Generallyspeaking, theinvention may be saidfto comprise the elements and combinations thereof set forth n the accompanymg claims forming a part ofthis specifica tion,

- Reference should be had tothe accompanying drawings, in which Figure 1 'is a side elevation with portions insection of a form of typewriter embodying my invention. Fig. 2 is a rear elevation of a portlon of the mechanism of my invention.. F1 3 1s an 7 elevation of certain relays emp oyed.

' switch button modified form Fig. 4. is a. top plan view of the keys or to make the inaugural electrical-connection. Fig. 5 is a'rear elevation similar to that shown in, Fig. 2, but of a modified construction. Fig. 6 is a side elevation of a disk and contact bar such as shown in Fig. 5. "Fig. 7 is an enlarged view of a of legendudisk. Fig. 8 is a diagrammatic illustration of the electrical connections between the motor and battery. Fig. 9 is a dia ram of electrical connections between the attery, ty'pebar solenoids, the distributer board and a legend disk. Fig. 10, is a diagram of the electrical connections'between the battery relay. and time switch which holds the relay circuit closed. Fig. 1 1 is a diagram of the electrical eonneetions between the various instrumentali-' ties of mydeviee, and a single battery when asingle. legend diskis used, Fig. 12 is a diagram similar to Fig.-1 1,- except that two legend disks'are used. Fig. 13. is an elevation with portions iii section of one part of the machine. f

In Fig. 1 there is illustrated a double keyboard' typewriting machine, the construction of which for the purpose of this invention may be of ordinary and usual type and in which board eludes a basal, carrying-a track 2 upon which I in turn carries aplaten ,4. The key-' bars represented'generally at 6. The mountof the type-bars, as well as-the mechani corresponds to the number of characters or keys represented inthe keyboard. Each solenoid is of ordinaryconstruetion and is provided with a hollow central portion, into which may slide a permeable core 8. The core of each solenoid is connected in the present instance directly with one of the keys, by means ofa link such as illustrated at 9, in; Fig. 1. I

The particular showing of the connectlon between the solenoid I cores, and the key board isbut by way of illustration, and no n Mounted upon the disk 12 is an arm 14,

particular claimis made to this feature.

, The important .faetin' connection with the construction is that the operation of the cores of the solenoid will effect a movement I of the corresponding type-bar to which it is mechanically connected. e I

From the construction as just descr bed, it will be. clear that when any solenoid 1s electrically energized, it will cause a moveplaced so thatunder ordinary conis mounted a traveling carriage 3,

is represented at 5, and is connected by suitable link elements with a nest of typethe' number of solenoids,

be moved farther into the solenoids, as the various solenoids are energized. This movement of the core into the solenoids produces the movement of a corresponding type bar, which will in turn produce an impression upon the platen,

Each solenoid has thereof connected in of electrical energy, while the other end of the sanding thereof is electrically connected to a distributing board, as shown at 10 in Fig. I. This board is a platform provided with projecting posts, one of which is represented at 11, and to the proper posts there is connected the solenoid winding.

At 12, in Fig. 1, there is represented what I I term a legend disk. In the particular form of the invention shown, this disk is secured upon a proper base. Upon one surface of the disk there is provided aseries of contact points, represented at 13, which may be of 3 any desired construction, and suitable electrical connections are made between the ,posts 11 of the distributing board and the contacts 13, to spell out the particular word, phrase or sentence which it is desired to an- For instance if it be detomatically write.

words.Dear Sir, the

sired to write the first contact 13 will be connected to the distributing board, and to the post thereon connected tothe solenoid which operates the D type bar, and so on through the word Dear. To space the words, the'fifth contact would be connected through the distributing board with the solenoid which operates the spacer bar. The electrical connection to effect the writing of the word Sir would, in kind, be just the same as that described, for-the word Dear.

' If it be desired to capitalize the words Dear? and Sir, then the contact 13" and the proper'subsequent contacts would also be parallel with a source electrically connected through the distrib- .utingboard with the solenoids which operate thekeys carrying capital D and capi- .S I I Of course it will be understood that in the event this invention be applied to a single keyboard machine, the contact 13 and the. sixth contact therefrom will be connected to the solenoid which operates the shift key.

engage with the contact-13, and near its mner portion the arm is provided with a contact which'engages with a ring 16 of 0011- 'ducting material, which ring is mounted upon the disk. This ring is electrically con- I nected with the source of electrical energy.

blage of instrumentalities which. have just i been described may bev dlagralnmatically Leaner? The electrical onnections for the assemillustrated in Fig. 9, and from this it will be seen' that as the shaft 15 is turned, the

arm is will successively contact with the various contact members 13, and in so -doing will complete the electrical circuits through the particular solenoids which are connected with thecontacts upon the legend disk, and the solenoids will in'turn operate their corresponding type bars.- v

I lit is my intention to use aseparate legend disk carrying contact members tolwrite a single line or portion thereof;

lln Fig. 2 T have shown a series of disks 12' an'cl'each of-these disks may be electrically connected. with the solenoids to cause the automatic writing of 'a line or fraction thereof,-

As before stated, the'arms 14 are mounted upon a shaft 15, and this shaft is at its end journaled in standards 16. Atone end of the shaft, there is rigidly mounted a plate 17 of permeable material, which is mounted opposite to a plate 18 also of permeable material. This plate is carried upon one end of a shaft 19 which at its opposite end cartill lit)

ries a gear wheel 20. The shaft itself is mounted in, a standar'dfll.

At 22 there is represented a motor, which upon its shaft is provided with a small gear wheel 28, meshing with the gear 20. Themotor may be run continuously when the machine is in operation, so that the disk 18 is continuously operated. Suitable electrical connections may be made with a 'coil18' whichis carried by the disk 18' and when this electrical coil is energised, the disks 17' and 18 will-be attracted to each other and the friction between the disks will be suilicient to cause the shaft to rotate.

It will be seen from the foregoing description that itfiis necessary to maintain the electrical circuit between the' solenoids and the contacts on the legend disks, so that the-circuit will be made at each contact point, and the relationship not be destroyed, as the arm 14 passes from contact point to contact point.

Ofcourse, the circuits may be maintained, 7 it a switch be mechanically held closed by theoperator, but this would be somewhat inconvenient, and therefore, I have provided a means for electricallymaintaming the circuits until the word, phrase, or sentence be-- ing printed is completed. The mechanism for accomplishing this result comprises a' circular member 2 1, as shown in Fig. 1, which is carried by each of the disks 12. -While this ring is circular in shape, it is not closed, there being a section'removed.

The arm 14 carries a portion which coni tac s withthis ring 524C. The ring is electrically connected with lllflbWO-POlIlli] switch,

through the coil V ently be described.

In Fig. 3, there is shown a series of relays 25. The relays and disks correspond in number, so that each disk has its correspond ing relay. These relays are of ordinary construction comprising a spool coil pro-- vided with a stationary permeable core 26, and above each core is a pivoted ari'nature 27, which is provided with a depending arm 28. This arm is in the path of a series of point switches, the arms of which are flexible, their inherent flexibility normally hold ing them from contacting with eaclrother. "When, however, the relay is energized, and the armatu e is attracted toward the core, the arm 28 causes these switches to successively engage and thereby start the ariou's instrumentalities toreflecting the automatic operation of the typewriter. 5

The arms Q9 and 30iorm the switch terminals for the circuit which operates the magnetic clutch 17. and 18, shown in Fig. 3.

The terminals 31 and 32 are. connected with the return circuit fronrthc arm 11' of each dish to the battery or sourceof power, while,

the contactmembers 33 and 3a are electrically connected in the circuit between the T his is secured by providing a short circuiting switch which shall place the windings of the 'relay' directly in circuit with the source of energy' This particular switch may conveniently take the form of a button, switch or' a switch which may simulate the keys usually employed upon typewriters. The manner in which this key or switch is electrically connected in the circuit may be noted at 35, in Fig. 11.

There will beas' many of these switches or. keys as there are disks and relays, and these switches may be grouped as shown in Fig. 4, either in front of the keyboard, as shown in Fig. 1, or at the side of the key board, or any other place-that. may. be convenient to mountthem. 'E'ach switch key will be provided with a suitable designation,- which will indicate to the operatorthe particular legend which will be automatically written upon the pressure of the same.

It will be understood that as the button switch 35 is depressed, the circuit from the battery or so'rice. of current is closed ..the relay, which causes the attractionof the armature 27. In its descent the armature will cause the'successive closure of-the switches which are in its I path. The first switch 'to be closed will preferably be the one closing the circuit between the battery and the magnetic clutch,

so that theshaft'15 will immediatelyb'egin "to .turn. The next switch closed'will 'comoperation, While: the closure of the third.

tact switch 24 and the winding upon the re? lay. However, the circuit through the re-.

plete the return: circuit between'the move able arm 14 and the source of current of the" is in contact with the contact strip 24, but as will be readily seen, the arm and the strip 524 will contact 've'ry'shortly after the'shaft begins to turn, and when this takes place, current will continuously flow through. the

. coil of the relay while the arm 14 makes a sively engaging. the-various'contacts onthe disk and causin the automatic operation of revolution, during which tim'e'it is succesthe type 'bars. en the shaft has made a completerevolution, the arm 14 passes from' contact with the contact strip '24, thereby breaking the circuit through the winding of the relay, and releasing. the armature 27, which in turn permits the various switches which have heretofore been heldby the armature-to open and break the circuits which have been heretofore closed bytheir contact- It will thus be seen that although 'all the arms carried by the shaft 15 will rotate, yet

'the circuits will be closed only through the partic'ular'disk whose' relay has been enerjgized by making electrical connections bypressing'the proper starting button.

" The showing in Fig.11- diagrannnatically' represents the electrical connections between the source of energy-the solenoids,"distributing board, magnetic clutch, legend disk and relay,..where a single disk is used.

Fig. 12 illustrates the electricalconnctidn between the same instrumentalities except that two legend disks are shown, and it *will be apparent that the samefelectrical-"com nection will be employed in using three or 1 more disks, as suggested in Fig. 12.

tionof the device'heretofore.explained. In

this modification, the legend. disks are" mounted directly-upon a shaft'so as to turn therewith, while 'the contact arms are stationarily mounted. Thisformof the invention permits variousdisks bearing differ ent legends tobe put on orremoved from theshaft, p In this form of theinvention, a shaft 36 is provided with a series lof grooveswhich extend substantially throughout the length of the shaft. The shaft is ofinsulating Ina-1 terial and in the bottom of each grooveflthere I typewriter,

form. of my invention. i

' is a strip of conducting material. This of therings 38. j These rings 38 are of 'con-. ducting material,' and are insulated from each other, making contact only with one of the conducting strips 37, as heretofore explained. Upon each ring, there bears" a :brush 39,- and each brush is connected with one of the posts 11 ofthe distributing, board.

It will'beunde'rstood that there area sufficient number of rings 38 and grooves in the shaft to correspond with the keys of the d upon which the invention is use Each legend disktis represented at 40, will" be provided with a serles of inwardly ex? tending prongs or teeth 41, .which will be of proper form and size to fit'within-the grooves and contact with the strips of conducting -ma terial 37. 7 These projections '41 are of conducting material, while the body of the legend disk is preferably of non-con-' ducting material, wherefore these various projections 41 will be, suitably insulated from each other.

Each of the projections 41 is electrically connected with .a'corresponding binding post 42, and there are in, number binding posts corresponding with the number of projections 41, or in other words, the binding posts correspond in "number with the keys of the typewriter. There is also a series of-binding posts. upon each disk 40, as represented at43, 'Thesecontact'members extend through thedisk and project up n the face thereof. The inner ortions o these members 43 are connectedln a suitable man- "ner with the'binding posts 42, the connection being such'as will automatically produce the operation of the type bars in proper sequence to print the desired word ,or legend.

Of course care must be taken that the disks be assembled in properrelation tothe'shaft,

that is'that the projections 41 of the disks shall seat in the proper grooves in. the

shaft. p

Each one of these disks 40. is provided with the circular contact strip 44 which is similar to the contact strip 24,.which has i k heretofore'been-described. In Fig. 5 there is illustrated "a'modificawhich is stationarily mounted adjacent ea'c legend disk,-this arm being in proper posi- At 45 there is represented a contact an}:

.tionito contact withthe row ofcontact s 43,

being the same as those which have hereto- I fore been described with respect to the other 'At 46. there is shown a magnetic'clutch arrangement which is of the same construe:

t'ion as that which has heretofore been exnames"? same as that described in connection with.

my first form oi? machine.

Having described my invention, I claim:

1. In a machine of the character .de-

scribed, the combination with. a plurality of symbol carrying members of electrical -means, including a movable contact member for automatically selecting and operating in proper sequence a plurality of said symbol carrying members.

2. In an automatic printing machine, a

plurality of symbol carrying members, electrically actuated means for operating said symbol carrying members individually, a

legend member havin a series of contacts,

each of said. contacts" eingelectr-ically con-.

nected to .a' separate means for operating the symbol carrying member, a contact-mean ber adapted to successively engage the aforesaid contacts, and a source of electrical energy connected in circuit with the contact member, and aforesaid electrically actuated means for operating the symbol carrying members. I v 3 3. In an automatic printing machine, a plurality of symbol carrying members, electrically actuated means for individually operating said symbol carrying members, a legend member having a series of contacts, each contact being electrically connected to a separate means for operating-the symbol carrying members, a contact member adapted to successively engage the saidcontacts,

the said contact member and legend member being relatively movable, and a source .of electrical power connected in series with the contact member and in parallel with the means for individually operatingthe symbol carrying member.

l. In a typewriter, the combination with plurality of type bars, andmeans for opera-ting said ty e bars, electrically operated means for dividually operating saidtype' bars, alegend disk having a series of contacts thereon, said contacts being individually electrically connected to a separate electrically operated means for" operating the type bars, a contact member adapted tov successively engage the said contacts," the said contact member and legend disk being relatively movable, a source of electrical energy connected in series with the contact member, and in parallel with the means for individually operatingthe type bars.

j to

ta ing each of thesaid-members withanindi 5. In -anautomatic printing machine, a plurality of symbol carrying members, a

vidual symbol carrying-member, a legend member provided with a series of contacts,

said contacts being each connected with the windings of a separate solenoid, a contactv member adapted to successively engage the aforesaid contacts, the said contact member and legend member being-relatively 'mov-' able, and a source of electrical'energy connected in series withthe contact member and in parallel with the windings upon the solenoids. I j 6. In a typewriter, the combination with a plurality of type bars, a plurality of solenoids, a member adjacent each solenoid andadapted to be moved as its solenoid is ener-p gized, operative connections between each of sa d members, and an mdivldual type bar,

a legend disk having a series-of contacts,

each contact being electrically connected with the windingflupon one of the solenoids, a. contact, member adapted to successivelyengage the said contacts, the said contact I member and legend disk being relatively movable, and a source of electric energy connected in series with the contact member and in parallel with thewinding upon each solenoid.

7; In an automatic; printing machine, a

'an individual symbol carrying'member, a

legend member provided with aseries of I contacts, said contacts being individually connected with the windings of a separate solenoid, a contactmember adapted to successively engage the aforesaid contacts the said contact member and legend member being relatively movable, and .a source of electrical energy connected. in series with the contact member and in parallel with the windings upon each solenoid. v a

' -8. In a typewriter, the combination with-a plurality'of type bars, apluralityfiof solenoids, each solenoid being-provided with a movable core, operative connections; between each core and 1 an individual type bar, a legend disk having a series of contacts, each contact being electrically connected with the winding upon one of the solenoids, a contact member adapted to successivelyengage'the said contacts, the said contact .member and legend disk being relatively movable, and a source of electrical energy connected 1n series with the contact membenand in parallel With-the winding upon each solenoid.

9. In a typewriter, the combination with a plurality of type bars, a plurality of solenoids, a member adjacent each solenoid which is adapted to be moved as its solenoid is energized, operative connections between each ofsaid members and an individual type bar, a legend disk stationarily mounted, a plurality ofcont'a'ct members carri dby said.

disk, electrical connection between each of said disks and the winding upon one of the solenoids, a contact member adapted to-successively engage each of the said contacts, means for causing said contact member. to rotate, and ,a source of electrical energy connected with the solenoids and with the movable contact member.

l 0. In a typewriter, the combination with a plurality of type bars, a plurality of electromagnetic devices, each of said devices being operatively connected with a type bar so as to move the same when the device is electrically energized, a legend disk having a series of contacts, each of said contacts being electrically connected with the wind ing upon one of the electromagnetic devices, a contact member adapted to successively engage-the contacts on the disk, and a source .-of electrical energy connected in serie with the contact member and in parallel with the windings upon each of the electromagnetic devices. a

11. In a typewriter, the combination with a plurality of type bars, a plurality. of electromagnetic devices, operative connections between each electromagnetic device and a type bar whereby the type bar will be operated-as the electromagnetic device is energized, a plurality of legend disks, each disk having a series of contacts thereon, electrical connections between each contact 011 the disks and the windings upon one of the electromagnetic devices, a shaft, a plurality of contact members carried by said shaft, there being one contact member adjacent each disk, said contact member being adapted to engage in succession the contacts upon the disk, means for rotating said shaft, a source of electrical energy connected in series with the contact member and in parallel with the windings upon eachof the electromagnetic devices;

12. In a typewriter, the combination with a plurality oftype bars, a plurality of electromagnetic devices, each of said devices being operatively connected with one of the type bars, a legend disk, a series of contact upon said legend disk, electrical connections between each ofsaid contact members and one of the electromagnetic devices, a contact member adapted to engage each of the contacts upon the. disks in succession, means for moving said contact member, a plurality ofswitches, the closure of one of said switches causing the means for moving the contact member to operate, another of said switches closing the circuit through the contact member, a member adapted by its movement to cause said switches to successively close, and a source of electrical energy connected in series with the contact member and in parallel with the winding upon each of the electromagnetic devices.

13. In an automatic printing machine, a.

games? plurality of symbol carrying members, electrically actuated" means for individually operating said symbol carrying members, a legend member having a series 01 contacts, each contact being electrically connected to a separate means for operating the symbol carrying lllQllllXlS, a contact member adapted to;success1vely engage the said contacts, the said contact member and legend member being relatively movable, a circuit connected with a source of electrical energy, and connected in series with the contact member and in parallel with the means for individually operating the symbol carrying member, means for closing the circuit, and means for holding the circuit closed throughout a printing operation, aid means automatical y opening the circuit when the printing is complete.

14:. In an automatic printing machine, a plurality of symbol carrying members, electrically actuated means for individually operating said symbol carrying members, a legend member having a series of contacts, .each contact being electrically connected to a separate means for operating the symbol carrying members, a contact member adapted to successively engage the said contacts, the said contact member and legend member being relatively movable, a motor for cans-- ing the relative movement beween the legend member and contact member, a circuit connected with a source of electrical energy and connected in series with the contact member and in parallel with the motor, and the means for individually operating the symbol carrying member, means for closing the circuit, and means for maintaining said circuit closed during a printing operation and automatically opening the circuit, at the completion of the printing.

15. In a typewriter, the combination with a plurality of type bars, a plurality of electromagnetic devices, each of said devices being connected with a type bar, a legend disk having contacts thereon, each oi? said contacts being connected with the winding upon one of the electromagnetic devices, movable contact member adapted to engage the contacts upon the'said disks in succession, means for causing said contact member to move, a source of electrical energy con nected in series with the contact member and in )arallel with the-winding upon each of the e ectromagnetic members, said source of electrical energy also being connected in series with the means for causing the contact member to move, a plurality of: switches,

one of said switches lying in circuit with the movable contact member, the other of said switches lying in circuit with the means for causing the contact member to move, a

member adapted to engage said switches to cause them to successively contact.

16. In a typewriter, the combination with tl' plurality type bars, a plurality of elec-' tromagnet c devices, each of said devices being connected with a type bar, a legend disk having contacts thereon, each of said contacts being connected with the windingsion, means for causing said 'contactmember to move, a source of electrical energy connected in series with the contact member. and

in parallel with the winding upon each ofthe electromagnetic members, said source of electrical energy also being connected'in senes with the means for causing the contact member to mo've,a plurality of switches, one of said switches lying in circuit with the movable contact member, the other of said switches lying' in circuit with the means for causing the contact member to move. a

member-adapted to engage said switches, to 1 cause them to successively contact, and

means for retaining the member which engages the said switches to holdsaid switches closed while the contact'member successively engages the contacts on the disk.

. 17. .In a typewriter, the combination with a plurality of type bars, a pluralityhof electromagnetic devices, each of said devices 30f disk having contacts thereon, each of saidcontacts being connected with the WlIlCllIlg' upon one of the electromagnetic devices, a

being-connected with a type bar, a legend movable contact member adapted to connect .the contacts upon the said disks in suc-.

cession, means for causing said contact member to move, a source of electrical energy connected in series with the contact mem her and in parallel with the winding upon each of the electromagneticmembers, said source of electrical energy also being connected in series with the means for causing the contact member to move, a plurality of switches arranged adjacent each other, one

of said switches lying in circuit with the movable contact member, another of said switches lying 1n circuit with the means for moving. the contact member, a relay, an armature adapted to be moved as the relay tromagnetic devices, each of said devices" being operatively connected with one of the type bars, 'a legend disk having a series of contacts thereon, each contact being electrically connected with the winding upon one of the electromagnetic devices, a segmented contact strip carried by, said disk, a movable contact m'ember'adapted to -successively engage the said contacts, and also to engage with the segmented contact strip, means for moving said contact member, a source ofelectricalenergy connected in series with the contact member, also with the means for causing the 'moving-of the contact member andwith the segmented contact strip, said ,source of electrical energy being connected in parallel with the -windings upon the electromagnetic devices, a relay, an armature for said relay, a plurality of switches lying in the path of movement of' the armature, one'of said switches being connectedin series with the movable contact member, another of said switches being connected in series with the means for causing the movement of the'contact member, and another of said switches being connected inseries'with the winding upon this relay, a switch for directly connecting the winding upon the relay with the source of electrical energy, whereby the armature of the relay is depressed and the aforesaid switches are closed, the armature being retained in depressed position while the contact member successively engages the contacts upon the legend disk.

In testimony whereof, I hereunto aflix my signature in the presence of two witnesses;

ARTHUR R. BULLOCK.

Witnesses:

N. C. HUBBARD, A. J. .Hunsoiv.

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