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Publication numberUS888808 A
Publication typeGrant
Publication dateMay 26, 1908
Filing dateJun 1, 1907
Priority dateJun 1, 1907
Publication numberUS 888808 A, US 888808A, US-A-888808, US888808 A, US888808A
InventorsBenjamin F Hutches Jr
Original AssigneeAutomultigraph Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Type-writer operator.
US 888808 A
Abstract  available in
Images(5)
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Claims  available in
Description  (OCR text may contain errors)

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' B. F. HUTGHBS, JR. TYPE; WRHQBR QPERATOR. APPLICATION HLED .NINE 1, 19o?.

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TYPE WRITER PERATOl,`

APPLICATION FILED JUNE l, 1907.

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APPLICATION FILED JUNE 1907` Nofso. .A PATENTE MAY 26, 1908.

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TYPE WRITER OPERATOR. APBLIOATION FILED JUNI; 1. 1807'.

\ 5 SHEETS-SHEET 5,

' BENJAMIN r. Hurones, in., oi nincnwr Jr., a citizen of the United States, residing at 1 operativelylbetween repetitions of tl e text ters to said addressees.

It shou d therefore containl automatic means ing patente plication iiled by me ki ap lications.

actuate thetye-Writer as to write a difiery which the following isaspecification.

. vv 'iiiierent headinvs, so that a li v automatically addressed to different parties.

UNITED sTATns PaTENT onnion. j

GRAPH (30., Oli NEW YORK, N. Y.,

No. ceases.

0I), NEW JERSEY, ASSIGNOR TO THE AUTOMULTI A CORPORATION 0F NEW YORK.

TYPE-WRITER OPERATOR.'

Patented may ze, ieee.

To all whom it may concern: l Be it known that BENJAMiN F. HUTCHES,

Ridgewood7 Bergen' county, State 'of New Jersey, have inventednew Iand useful llin-I provenients in Typewriter' Upeiators, oi

This' invention relates to a type-writer operatorby which letters or circulars Written upon'the type-writer will be rovided with lie text will be The machine is provided with-one record for the text and with a multitude of records for the different headings. Means are provided for alternately o erating the records, sotliat a different heading record is inter olated record. "By changingthe heading records, the 'addressees maybe selected b the oper ator in setting the machine, whic after be ing so set, will vautomatically Write the let-v rllie type-writer itseli', which does not form art of this invention, should bc soV constructed that it-pei'fornis automatically all. the different functions necessary for repeatedly re reducing a vletter or` other writing.

for shitting and returnin f the, earria e, and for rotating the platen. means shouldbe provided for automatically removing the written sheets from the platen and for so feeding a blank sheet to such laten that it' occupies the proper position or starting 'the next writing. A .typewriter of. this class is 4embodied in a cigiendf .u 2,

1907, under erial No'. 371,421, while'aiitomatic means-for removing the written sheets from thefolaten and for feeding a blank sheet to such platen are embodied iii a second copending patent application filed by ine May 8, 1.907, under Serial No. 372,610. It is to be understoxfl, however, that'niy in'ipri'ived operator may be used with constructions other than those described in the above two rielly stated, my invention embodies a magazine ,fadaptcd to be operatively con-v nected to a type-Writer and containing a stack of heading cards1 each adapted t'o so ent address. ft'er a bia'nkfsheet has been the platen,

n addition t creto, l

vbrought into properposition for 'starting the writing, the ndate first Written by a recor which is subsequently re-used for the text o. the letter. Y The date being thus Written, the

text record is automatically arrested and the heading record is simultaneously started to 6,9 provide the dated sheet with name, address and accost of the addressee, `The heading1 record is then arrested and the text recorr. re-started to write the text or body of the letter. This record also serves to remove the written sheet, to placca new sheet upon and to Write the date upon this new sheet. After this new sheet has thus been dated by the "text record, the heading record .is re-started .to write a different headgg ing upon such sheet. Means are also pro vided for .so settin` the type-Writer that any specific number of xletters with different headings andlike text may he automaticeily written, after which the machine is auto- `matically arrested.

in the accompan ing drawings; Figure 1 is a plan, partly bro {en away, of the heading f device, Fig. 2 a longitudinal section Online 2-2, Fig. 1; Fig. 3 a detail ot part of the 80 heading record vsup orting roller; Fig. d a detail section throng ,the contact levers; Fig. 5' a left hand 'end view, artlybroken away, of A Fig. 1; Fig. 6 a right liand end view of the saine; Fig. 7 a detail .of one ofthe headin g5 cards', Fig. 8 alongitudinal sction throiigi the ty ie-writer operator; Fig. 9 a plan of part o' the operating mechaiism; Fig. 10a planoi partv of the automatic switch; Fi 11 a side view, partly in section, thereo 3 9e Fig. 12 a perspective view of Fig. 10, andv Fig. 13 a wiring diagram. A

A magazine 2() containing a stack of per forated heading records or cards 21, is adapt-k ed to be connected to the frame 22 of an auto 95 matic typewriter. Thel connecting.I means are shown to consist of a air of pins 23 on box 20 engaging hooks 24 ogframe 22,. With. in box 2() is. journaled a feed roller 25 which receives motion in Imanner. hereinafteridescribed.. In front of roller 25 there Iis an. ranged a table 26.adapted to support the stack of heading .cards 21. The parts 25 andA g 26 are s o arranged thatroller 25 projects slightly abovetable 26 which will 'canse the 105 cards 21 tol he vsupported at their forward end 'upon such roller. Above roller 25-extends upwardl `an inclined artition 27 havinga beveled oweredve, he elevation o parti-v tion 2"(- -above roller is such that aninter-` 110 vening gap is formed sufficient to permit the passage of a single heading |-card. To insure a ositive engagement between the cards and ro ler 25, a presser foot 28, weighted as at 29, 5 slidably engages partition 27 by means of U- shaped arms 3() that straddle such partition. Back of feed roller 25 is hung a grooved roller 31 adapted to support the successively advancing heading cards. toller 31 receives rotar movement from feed roller 25 by gear whee s 32, 33, 34. intermediate' rollers 25 and 31 there is formed a passage for the cards by means of a lower plate 35 and an up )er curved'guard 36, the atter being secure to partition 27 at 37. By the construction described the bottom card is fed by roller,25 through the passage between plate 35 and guard 36, until it engages roller 31, which, after the card has fullilled its function of writing the address, will eject the same.

In order to insure a positive engagement between the cards and roller 31, a .pair of friction disks 39 are arran ed above theends of such roller. These dis s are mounted u on avertically movable spindle 40 journalec in upright slots 41 of box 20. Spindle 40 is pressed towards roller 31 by a plunger 42 grasping such spindle, the stein 43 of such plunger passing freely through a perforated screw 44 tapped'into a cross bar 45 of box 20. A coiled spring 46 encircles stem 43 between screw 4 4 and plunger 42, so that by manipulating screw 44 the pressure of the plunver against spindle may be readily adjuste '35 Roller 31 is provided with a number of i spaced circumferential grooves 47, and above each of such grooves is arranged a contact lever 48 free to turn on a stationary shaft 49 mounted in boX 2() above guard 36. In or- 43. der to obtain a properbearing for each lever 48, the latter is fitted upon a flanged hub 50 loosely turning on shaft 49, the hubs 50 being properly spaced by intervening tubular sleeves 51 on shaft 49. A free play for levers 4'5 .48 is permitted by slotting guard,36 below "each of such levers as at 52.

Each lever 4S has' a Contact screw 53 at its free end and a downwardly extending finger 54 intermediate said screw and fulcrum 49. 50 Contact screw 53 is adapted to engage a ixed contact 55 secured to an insulating crossbar 56 of box 20. The parts are'so assembled ythat when an im erforate portion of card 21 ,passes beneath inger 54, lever 48 will-be 5 5 f'maintained in its raised position asshown in Fig. 2, so that contact screw 53-is lifted off contact 55. As soon as va perforation 57 ofv card 21 arrives beneath finger' 54, the latter will drop through such erforation to enter an alined groove 47 of ro ler 31. l n this way lever 48 willtilt by gravity until cont-act screw 53 rests upon contact 55.

Each contact 55 has a Llshaped spring arm 58 adapted to engage a Contact button j 59: of casing 22, when the heading' device is ,motor S1.

coupled to the type-writer. Buttons 59 are connected to the means for operating the keys of the Ytype-writer in manner hereinafter described, so that when the finger 54 of anycontact lever 48 enters a perforation of 7.3 the heading card, a circuit will be closed that `operates the corresponding key of a type.-

writer. l v

' Feed roller 25 receives intermittent rotary movement from the main power-shaft 60 of 75 the type-writer, which is driven by electro- The construction is such that either the text record is fed forward by such power-shaft while the heading card 21 is atrest, or vice versa, as will be hereinafter more fully described. For rotating feed roller 25 there is fast on power-shaft 60 a worm 61 engaging worm-wheel 62 loosely mounted .on-a counter-shaft 63 and constituting the relatively I'ixed member of a heading card feed clutch. Upon shaft 63- is slidably mounted the movable clutch member 64, adapted to rotate shaft 63 by a groove and, feather connection. Member 64 is provided with a circumferential groove engaged by the free end .of the armature 65 of an electro-magnet 67,

such armature being pivotedI at 66. When armature 64 is attracted, shaft 63' will' be coupled to shaft 60, while," when electromagn'et 67 is denergized and the armature is released, shaft 63 will be uncoupled from power-shaft 60. In alinement with shaft 63 there is mounted in bearings 68, 6%) of box 20, a worm-shaft 70, which, when box' 20 is coupled to casing 22, will be simultaneously coupled to shaft (i3-. For this purpose shaft 63 is provided with a notch 71 adapted to receive a tongue 72 of shaft 50. Upon shaft 70 is loosely mounted, by a groove 'and feather .connect-ion, a worm 73 influenced by 105 a spring 7 4. This worm is adapted to be engaged by a worm-wheel 75 fast on the shaft 76 of roller 25. It will thus be seen that as soon as electro-magnet 67 is energized, roller 25 will receive. rotary movement from power- 13 lshaft 60 by worm 61, worm-wheel 62, coupling member 64, shafts 63, 70, worm 73 and norm-wheel 75. In order to rotate roller 25 by hand, if desired, a knob 77 secured to one end of shaft 76. By properly turning this knob, roller 25 is rotated to advance afcard 21, during which operation worm 73 is by wheel 75 moved along shaft 70 against the action of spring 74,'until worm 73 and yWor1n-wheel-75 are brought out of engage- 12"(`l ment. If roller 25 is subsequently to be rotated from shaft 70, worm 7 fwill during the beginning of rotation of shaft 63, b'e screwed into engagement with wheel 75 until the former bears with its hub against bearing 69, whereupon the rotation of roller 25 will commence.

The above described headingpdevice is to be used in connection with an automatic type-writer, such as shown in Figs. 8 and 9, 130

*Hrwperaor frame, (the sprlngs .58 engaging each contact lever 48 is, by Wire 92, connected to .the corresponding contact 88 .on

contact pinsi59 being omitted in the Wiring diagram). Each contact 88, is, by Wire 127, connected to its electro-magnet 89 for operating the type-writer keys, said electro-magnets being connected to a common return wire 128. Contact spring 107 is, by wire 129, connected to'the contact 130 arranged below heading card feed lever 97, while contact spring 108 is, by wire 131., connected to contact 132 arranged below record feed lever 98. The bridge 112 adapted to be alternately engaged by s rings 107 and 108 is, by wire 133, 'connecte to electro-magnet 100 which serves to intermittently rotate ratchet wheel 104. Electro-magnet, 100 is, by wire 134, connected to Wire117. From contact spring 113 leads a wire 135 to electro-magnet 86 -of the record feed clutch, while spring 114 is, by wire 136, connected to electro-magnet ,67 of the heading feed clutch. Electro-mag nets 67, 86 are, by wires.137 and 138, connected to main wire 1 17. Ratchet wheel 104 is, by contact 115, .wire 139 and contact 140, connected to armature 121 that receives its current from wire 11G-through wire 119 and contact 120, as above described. Contacts 141, also adapted to be engaged by armature 121, actuatethe carriage return means, and do not form part of the present invention As has already been stated, there is used for every address, a separate headin card 21, the perforations of which control t operation of the typewriter while the heading is being written. Levers 48 are normally *lifted off their contacts by the imperforate sections of the heading cards.

-rest upon their respective contacts 55.

Ii therefore no heading card is interposed between roller 31 and contact levers 48, all such levers will To prevent all the type-bars from being thus simultaneously operated, which would result in a destruction of the same, means are provided for breakin theI current flowing through magnets 89W en no heading card is interposed between roller 31 and contact le vers 48. These means consist of an additional contact lever 142 fulcrumed on shaftA 49 of the headingdevice. To lever 142 is sey cured by insulatlng plate v143, a slotted metal pair of contact pins 149, 150 of frame 22.v

Of these, pin 149 is connected to return Wire 128, while pin 150 is connected by wire 151 to wire 117.

Each heading card 21 is, below contact vers 98 and 142, hereinabove referred to, providedat its front and rear edge with a pair of triangular notches 152, 153, each notch having a 'straight inner edge 154 and 'near their alined straight edges 154, while the finger 54 of the circuit breaking lever 142 engages the oblique edges 155. As levers 48 makes contact upon 1 theirA down stroke, While lever .142 makes contact at its up stroke, it is plain that when no heading card is inter osed between lngers 54 and roller 31,all lill ered, so that the return current of magnets 89 is broken, and the character keys are rendered ino erative. if a card 21 is now fed between gers 54 and roller 31, the levers 48 will be iirst lifted olf their contacts 55, and afterwards lever 142 will be raised to contact with screws 145, 146, and thereby establish communication between wires 128 and 151. In order to prevent any damage to the Inachine in case the attendant should accidentally reverse the cards 21 in box 20, the cards are provided opposite to notches 152, 153 with a pair of corresponding notches 152a and 153.

, Means are provided for automatically arresting thetype-writer operator including vmotor 81, after the desired number of letters has been Written. These means are shown to consist ofan electro-magnet 156 having spring-influenced armature 157 to which a spring pawl 158 is pivoted. The latter engages a conducting ratchet Wheel 15.9 having a non-conducting tooth 160. Ratchet Wheel 159 receives current by Wire 161 connected to the negative ole of the source of electricity, while a wire 162 leads from armature 157 to' main wire 117. Electro-magnet 156 is, by wire 163, connected to wire-133, and by wire 164 to wire 117. It will thus be seen that at `each impulse imparted to electro- Inagnet 100, part of the current will flow from wire 133 through electro-magnet 156 to attract armature 157 simultaneous-ly with armature 101 of electro-magnet 100. The number of teeth of, ratchet wheel 159 should be twice as large as 'the number of heading cards that can bc held by box 20, because electro-magnet 156 is attracted twice for each letter writ-ten. 'Ratchet Wheel 159 is provided with a pointer 165, playing upon a dia'l 16,0, so that the ratchet wheel may be set for any number o1 copies desired, after the writing of which the machine is thus automatically arrested.

The operation is as follows: An endless record 79. is placed into the operator frame 22, the cards bearing various headings are stacked into box 20, and the pointer 165 is set to the number of such cards. The bottom card 21 should be so placed that contact levers 48and142 are raised thereby, while record feed 'lever 98 e ages its contact 132 through notch. 152 l he frisachine is now started by closing a inain switch 167, ratchet ssasoe 104 beingl so set that spring 107 is raise-d I eration above described will be repeated. While spring 113 1s lowered.. ln this way the i When the desired number of letters has been record feed clutch 83, 84-willbe closed by l electro-magnet 8G, the current llowing as `follows: from Wire 116 through branch 119, Contact 120, armature 121, contact 1110, Wire 130, Contact 115, ratchet wheel 104, spring 113, wire 135, electro-magnet 86 and wires 1.38, 137, to main wire 117. During the writing operation the current of each text record operator lever 78-travels from wire 1 16 through branch 124, lever 78, contact 88,

Wire 127, electromagnet 89 common return `vWire '128, contact 149,. spring 14d, contactA 150 and Wire 151, back to the main Wire 117.

After the date has thus been written by thel advanein, text record, a perforation 1n the latter wil arrive below the finger of lever 97,

so that the latter by descending, closes a circuit, 1 the current flowing from Wire 116 through branch 124, lever 97, contact 130, Wire 129, spring 107, bridge-'112, Wire 133, eieetro-magnet 100 and branch 134 to Wire "117. Part of theeurrent wili also fiow from' wire 133 through branch 163, electro-magnet 4156 and #branch 164 to Wire 117. Electromagnts 156 being thus energized, will written, insulated tooth 160 of ratchet wheel 1.59 will become engaged by pawl 158, so that the supply of electricity to main wire 117 is interrupted and the entire machine is arrested.

if it is desired to write envelo s only by means of the cards 21, a contact ever 168 is provided which is, by wires 159, 170 con nected to-wires 131 and 116 respectively. if the completev address has beer.` written up to the accost, lever 168 is de rcssed by hand to close a circuit which wil energize electromagnet 1.0() to rotate ratchet wheel 10e and stop the heading record feeding device, before the aceost can be written.

. 1t will be seen that by my invention any quickly and reliably turned out in an automatic manner. Furthermore, as the heading cards are separate from one another, they 95 may be readily changed, and reduced or re plenislied in number, so that the addressees of any one letter may be easily selected, desirable parties may be added and undesirable 'attract their armatures 101, 157 to advance ratchet Wheels 104 and 159,k for the space of one tooth. By the partial rotation of ratchet wheel 104, s ring 107 will become disen' ygaifed from ridge 112, while spring 10S 4Wil corne into contact with such bridge. Simultaneously spring 113 has been 'raised e5 oli ratchet Wheel 104 to break the current partiesmay be eliminated. 1,00

energizing electro-magnet 86 and .stop the I clarin: record feeding means, while vspring 114 has 1. A type-Writer operator provided with been brought into engagement with ratchet means for su porting a series of disconnected wheel 104, to start the headiii'g" card feeding heading car s, and. means controlled by said means, by a current Which flows as follows: cards for actuating a type-wr1ter, substan 105 from ratchet Wheel-104 through sprin 114, tially as specified. I wire 136, electro-magnet 67 and branc 137 2. A type-wr1tcr operator provided with a to Wire 117 While the perforations in the text record, a series of disconnected heading heading card serve to operate type-writer cards, and means alternately operated by v15 Vkeys 91,.the current of each contacty lever 48 the text record and heading caros for actu- 110 iiows from wire 125, (which is ct'innected to ating a type-writer, substantially specime' `1 wire 116), through lever 48, contact 55, fied. l l V a Wires 92, 127 into electro-magnet 89,`the cur- 3. A type-writer operator provided with a 4reniA return being the same as above demagazine, a series of disconnected' headin scribed. After the heading has been corn .cards contained therein, andin'eans controlle 115 pletvd, the finger of contact lever 98 Will by said cards for operating a type-writer,

v ente? notch 153 to close a current which substantially as specified. v flows from Wire 125, throughrecord feed lever 4. A type-writer operator provided with a 98, contact 1312', ivire 131, spring 108, bridge magazine, a series ot disconnect-ed headlng 112 and thence' through electro-magnets 10() cards contained therein, and electric circuits 120 and 156, as above described. In this way controlled by saidtgards and adapted to op ratchet Wheel 104 will be again rotated for crate a type-Writerssubstantially as specithe space of one tooth. to arrest the heading tied. ,c

- card feed and to simultaneously re-start the 5. type-writer operator containing Va text record feed as will be readily underseries of perforated stacked disconnected 125- heading cards', levers adapted to engage the' card-perforatlons, and type-Writer actuating means in circuit with said levers, substantially as specified.

6. A type-writer operator'\.provided With a 130 stood. The advancing text record-Will now cause the body of the letter to be Written, will then remove the Written sheet, replace it by a blank sheet, and finally Write the date e5 upon such blank sheet, after which the opmagazine adapted to contain a stack of heading cards, means for withdrawing the bottom card, and'mcans controlled by said bottom said type-Writer operating fnieans, substantially as specified. t

9. A type-Writer operator provided with a stack of perforated cards, means forsuccessively withdrawing said cards, and means actuated by the Withdrawn cards foractuating a type-writer, substantially as specified.,

10. A type-Writer o eratorvprovided with a stack-of heading car( s, a text record, means for actuating the record alternately with successive cards, and type-Writer actuating means controlled by sai cards and record.,

substantially as specified.

11; A type-Writer o crater provided With a stack of heading cart s, a text record, means for actuating the record alternately with successive cards, y type-writer 'actuating means controlled by said cards and record, and typewriter 'arresting Vmeans' also controlled by said cards and record, substantially-as specified@ 12. A typewriter o )erator provided with a-staclr of heading cards, a text record, means for actuating the record alterlmtely with successive cards, typeswriter actuating means controlled by said cards and record,

and means controlled by thc record for arresting therecord and starting tire cards, substantially as specified.- y

13.- A type-writer operator provided with a stack of heading cards, .a textrccord, means for-actuating the record alternately with successive cards, type-writer actuating means controlled by said cards and record, and

'means controlled. by the cards for arresting the cards and starting the record, substantially as specified.

11i. A typcwfritcr operator provided with a stack of headin cards, a text record, means for actuating thc record alternately with successiveca'rds, type-writer actuating means controlled by said cards and record, means controiled by tln'` record for arresting thc record and starting the cards, and means controlled by the cards for arresting the cards i starting the record, substantially as speci-- i". .in a type-arrter cperai'or. a record,

card, a'iirst contact lever engaging the rec'- ord, a second contact lever engaging the card, anelectr'o-magnet in circuit with both contact levers, and means controlled by the card for breaking said circuit, substantially as specified.

. 16. In a type-Writer operator, a perforated card having a notch, a first contact lever controlled by'L the card perforations and in circuit With type-Writer operating means, and a second .contact lever adapted to engage the card-notch and to break said circuit, substantially as specified. f

17. In a type-writer o erator, a record feed roller, a card feed rol er, a power-shaft, and a ratchet Wheel for alternately coupling said rollers operatively to said shaft, substantially as specified.

18. In. atype-Writer operator, a record, a a card, card feed lever engaging the, record, a sprin in circuit with said lever, aratchet Whee and a contact adapted to be engaged by said spring-and an electro-magnet in circuit with the contact and ada ted to operate the ratchet Wheel, substantia y as specified.

19. In a type-writer operator, a card, a record, a record feed lever en aging the card, a spring in circuit with said ever, a ratchet wheel and a contact adapted to be engaged by said spring, and an electro-magnet in circuit with thecontact and ada ted to operate the ratchetwheel, .substantially as specified.

20. In al type-WriterV operator, a record. feed clutch, a first electro-magnet opera- -tively connected to said clutch, a first spring in circuit with said first electro-magnet, a second'spring, a ratchet Wheel adapted .to be engaged by both springs, a second electromagnet in circuit wlth the second spring, and means controlled by said second electro-magnet for operating the ratchet Wheel, substantially as specified.

21. In a type-writer operator, a card feed clutch,- a' first electro-ma net operatively connected to said clutch, a st spring in circuit with said first electro-magnet, a second spring, a ratchet Wheel adapted to be engaged by both springs, a second electro-magnet in circuitl with the second spring, and means controlledby said second electro-magnet for operating the ratchet wheel, substantially as specified.

22. In a type-Writer operator, a conducting ratchet Wheel, a non-conducting toothed Wh cel connected thereto, a first spring adapted to engage the ratchet Wheel and the toothed Wheel', a record feedclutch, an electromagn et controlling said clutch and in cir' cuit with said first spring, a second spring engaging the toothed Wheel,` a contact adapted to be engaged by said second spring, and a second electro-magnet in circuit With the contact and adapted to operate the ratchet Wheel, substantially as specified.

23. In a type-writer operator, a card feed feed clutch, a ratchet VW clutch, aratchetwheel, a record'feed lever opi eratively connected to the ratchet Wheel, meanscontrolled by thevratchet Wheel for operatin the card feed clutch, and a counting mec anism controlled bythe ratchet Wheel, substantially asspecied.

24; In a type-writer oEeI-ator, a record eel, a cardcfeed lever operatively connected t0` the ratchet Wheel, means controlled bythe ratchet Wheel for operating the record feed clutch, and al y counting mechanism controlled by the ratchet Wheel, substantially as specified;A

25. In a type-Writer operator, Vafp'Werf' shaft, 'a record, a card, a record feed clutch, a

card feed clutch, a ratchet Wheel alternately controlled by the record and card and adapted to alternately operate said'c'lutches, and a counting mechanism controlled by the ratchet Wheel-fandadapyted to 'arrest the 'power-shaft,-

substantially as specified.

.Signed by me atNeW York-city, (Manhay tarn) N. Y., this 31st day of May, 1907.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2540029 *Feb 6, 1948Jan 30, 1951IbmSelectively controlled recording apparatus
US2600952 *Jan 13, 1950Jun 17, 1952 Recording and accounting apparatus
US3027072 *Oct 5, 1959Mar 27, 1962Tally Register CorpPerforated tape data reader
US3930570 *Jan 28, 1974Jan 6, 1976Sperry Rand CorporationAutomatic line finder and line counter
Classifications
Cooperative ClassificationG06K15/00