US2090788A - Computing and like machine - Google Patents

Description

Aug. 24, 1937. A. w. Fl-:lL-:RTAG

COMPUTING AND LIKE MACHINE AFiled June 1,1, 1955 s sheets-sheet 1 Aug. 24, 1937. A, w FElERTAG 2,090,788

COMPUTING AND LIKE MACHINE Filed Ju'ne 11, 1955 s sheets-sheet 2 gmc/rm 4 ARTHUR MIE/mme.

551s l l WMA Aug. 24, 1937. A. w. FEIERTAG COMPUTING AND LIKE MACHINE s sheets-sheet s Filed June 1l, 1935 gmc/wm Patented Aug. 24, 1937 PATENT OFFICE nl?" AND LIKE MACHINE Arthur W. Feiertag, Cincinnati, Ohio, assignor to Remington Rand inc., New York, N. Y., a corporation ci Delawae Application .lune il, i935, Serial No. 26,047

1 Claim.

My invention relates to tally roll mechanism for use on computing, tabulating, typewriting and like machines.

One of the main objects of my invention, generally stated, is to provide a simple and eilicient automatic rewind device for tally rolls including novel means for controlling the line spacing and feed of a tally roll strip or strips.

Another object of my invention is to provide lo improved mechanism of the character specied that may be readily introduced as an attachment to existing computing, typewriting or like machines without modifying, or materially modifying, the existing structural features thereof.

l5 A further object of my invention is to provide an improved tally roll mechanism in which a tissue tally strip is used to effect a double printing without the use of carbon paper, and in which the regular ink ribbon is used to produce both rst and second copies Still another object or' my invention is to provideimproved means for effectively supporting the tally strip take-up roll and yet maintain maximum visibility.

5 A further object of my invention is to provide improved means for line spacing the tally strip and ledger sheet in unison whenever simultaneous spacing of the two sheets is desired.

Another object of my invention is to provide an improved tally roll mechanism which is car- 30 ried by a fixed part or" the machine and does not travel with the carriage.

Stiii another object of my invention is to pro-s vide a tally roll mechanism by means of which a duplicate printing of each item may be cb- 35 tained on a tally strip in a vertical column regardless of the movements of the carriage and the distribution of the same items on the record sheet.

A further object or my invention is to provide tally roll mechanism in which a tally strip is sup- 50 combinations ci devices set forth in the following description and particularly pointed out in the appended claim.

In the accompanying drawings, wherein like reference characters indicate corresponding 55 parts in the diierent views,

Fig. 1 is a right side elevational view, with certain parts omitted, of a computing machine equipped with the devices of my invention;

Fig. 2 is an isometric view of a portion ofthe tally roll mechanism embodying my invention showing said mechanism as a single unit and in normal position detached from the computing machine;

Fig. 3 is a vertical sectional view of the device, the section being taken just inside the gears forming the driving train for the take-up roll, on the line 3-3 of Fig. 8 and looking in the direction of the arrows at said line;

Fig. 4 is an enlarged, detail fragmentary vertical sectional view taken through the axis of the take-up roll and `illustrating the friction drive for said roll, the section being taken on the line i-i of Fig. 2 and looking in the direction of the arrows at said line; i

Fig. 5 is a fragmentary, right side elevational view, with parts in section, of my novel automatic rewind device, the view illustrating the relation of said device to the traveling carriage and cer y tain of the operating mechanism of the computing machine;

Fig. 6 is a detail, vertical sectional view through the tally strip chute, the section being taken on the line tof Fig. 1 and looking in the direction of the arrows at said line;

Fig. 7 is a fragmentary, detail, sectional view showing the relative positions of the tally strip, ribbon, ledger sheet, and platen together with the upper part of one of the type sectors; and

Fig. 8 is a fragmentary, vertical sectional view through the tally strip feed roll and taken along the line d of Fig. 5.

I have shown my invention in the present infstance embodied in a computing machine known as the Dalton Multiplex commercial ledger posting and statement machine, model 490 Z 131 Z, in which the devices of my inventiiin may be readily incorporated without modifying. or materially modifying, the existing structural fea tures of such machine. Since the above machin. is a well known and marketed computing maA chine, I have only shown so much thereof as i necessary to arrive at an understanding oi .':ly invention in its embodiment therein. It should be understood, however, that the invention is not restricted to its use in said machine alone but may be included in various forms of computing, typewriting and like machines generally, 5wherever found available.

I shall iirst describe some of the existing structural features of the Dalton Multiplex machine lil and will afterwards describe the devices of the present invention in their combination therewith.

The Dalton computing machine, as is well known, is a machine of the ten-key type in which the major portion of the mechanism is housed within a casing or cover member I3, as shown in Fig. 1. The keyboard is situated at the front of the casing or machine and includes a set of numeral keys II, which upon being depressed successively will set up corresponding amounts in the usual pin carriage (not shown), so that upon making an operating stroke of the usual handle I2 said amounts will be entered into the accumulator wheels. Simultaneously with this computation or entering intoV the accumulator wheels, printing instrumentalities or type sectors I3 will be swung upwardly to position to print the amount upon any suitable record sheet R through the medium of an interposed ink ribbon I4 fed from one to the other of the usual ribbon spools I5 suitably mounted toward the front of the machine on the upper side of the casing III.

During each printing operation the types strike against a platen I3 around which the sheet R has been fed in a manner to be presently described, said platen having a shaft I1 which is journaled in suitable bearings provided in end plates I8 and I3 of the usual traveling carriage which is designated as a whole by the reference numeral 20. As shown in Fig. 5 the carriage -20 is of the usual construction and is provided with grooved raceways in rails 2I thereof in which anti-friction rollers or balls 22 are reoeived,`said balls also being received in oppositely disposed grooved raceways 23 of a fixed supportingbar or rail 24. The carriage is thus supported for traveling movement from side to side of the machine and relatively to the printing instrumentalities I3.v

The usual means are employed for propelling the carriage and arresting it in its different columnar positions for the entry of items in the different columnar fields on a work sheet or sheets carried by the carriage. The usual means are also employed for normalizing the machine and thereby preventing tabulating jumping of the carriage where the entries are to be made vertically instead of horizontally on the ledger sheet, as will hereinafter appear. However, inasmuch as a showing of such normalizing" means is unnecessary to arrive at an understanding of my present invention, illustration thereof has been omitted.

To aid in the handling and insertion of work sheets into the machine there is provided a paper table 25, paper rest plate 25* and paper guides 26, said paper table being carried by the carriage and secured between the side plates I8 and I 3 thereof by shoulder screws 25". The paper rest plate 25'L is adjustably secured to and supported by the paper guides 26 with the aid of knurled screws 26". 'I'he paper guides 26 have forwardly projecting flanges 26h at the sides thereof which constitute side edge guides for determining the lateral position of the ledger sheet or record sheet on the carriage, and are supported by arms 21 which are adjustably mounted on the vsquare shaft 26. An additional guide 28 aids in leading a record sheet to the rear side of the platen where feed rollers 29 and 30 coacting with the platen I6 in a well known manner, and the usual paper deilector 3| will lead said sheets to the printing point or line when the platen shaft I1 is turned. The feed rollers 29 and 30 are of the usual reaocofrss leasable construction, being spring pressed against the platen, thereby holding the inserted work sheet against the platen to eil'ect a feed thereof.

According to the type of work that is being done on the machine at any given time, a group of entries to be made on a record sheet may be entered in a horizontal line by tabulating the carriage from one column to another in the usual manner. At times, however, the character of the work may be such that it is deemed desirable to make the group of entries on the record sheet in a vertical column one under another instead oi' across the sheet. In order that this may be accomplished, the model of the Dalton machine hereinbefore referred to is provided with a finger piece or button (not shown) on the front plate of the machine for normalizing" the operation of the machine. This button when in one position causes the carriage to be advanced or stepped forward at each actuation of the handle I2 to a new columnar 'field or tabulated position, in order that the entries may .be made in a horizontal line across the sheet. When, however, this button is in the other or "normalizing" position it will cut out the tabulating operation of the carriage at each actuation of the handle, so that the carriage remains at rest, but at each such operation of the operating handle will cause the line spacing mechanism to be actuated in order to print the items one under another in a vertical column.

In the present instance, I have shown only so much of the mechanism referred to above as is necessary to arrive at an understanding of the same in its cooperation with the devices of my invention. Referring to Fig. 5 it will be seen that a depending arm 32, which is held in a central position in the machine by attachment in a well known manner to the fixed rail 24, extends into the body of the machine. 'I'his arm 32 is provided with a roller 33 at the lower end thereof which is adapted to cooperate with an actuating member 34 in the machine, said actuating member 34 being given a forward or clockwise movement during the downward stroke of the operating handle I2 and being returned to normal position, shown in Fig. 5, during the latter part of the return stroke of the operating handle. Due to the coaction between said member 34 and the roller 33, the arm 32 will be given a corresponding oscillatory movement at each actuation oi' the handle of the machine, provided that the button hereinbefore referred to is set in normalizing position. The effect of operating the arm 32 in this manner is to rock a universal rock shaft 35 with which said arm has an operative sliding connection, said shaft 35 being mounted to turn in bearings in the end plates I3 and I3 of the carriage and at its ends extending beyond said plates.

Secured to the right-hand end of the shaft 35, as shown in Fig. 1, is a crank arm 36 having pivoted thereto at 31 a line spacing pawl 38. A contractile spring 33 is connected at one end to the pawl and at it's opposite end to the crank arm 33 and thus tends to urge the pawl 38 in a clockwise direction about its pivot 31 and into engagement with a ratchet wheel 40 mounted on the platen shaft I1. A stop lug 4I projects laterally from the pawl 33 and underlies and coacts with the forward end portion of the arm 33 to limit the relative movement between the4 pawland its carrying arm in one direction and under the force of the spring 33. Thus, during tally strip,

'u invention I am enabled to each oscillation o1` the arm 32 the crank arm 38 will rst be given an upward movement carrying the pawl 33 against the Wheel 40 and stressing the spring 39. After reaching an extreme position in this direction the arm 36 will be returned to normal position and advance the platen one line space, after which the pawl will be disengaged from the ratchet wheel 40, leaving the parts in the normal position shown in Fig. 1 ready for the next operation.

From the foregoing description, it will be apparent that if desired, the platen I6 can be line spaced at each actuation of the operating handle I2 when the normalizing button is in position to cut out the tabulating operation of the carriage.

Having described briey certain of the features of the Dalton computing machine, I shall now describe the devices of my invention as they may be combined therewith.

In machines of the same general character as the Dalton in which the devices of my present invention have been embodied, due to the fact that a traveling carriage is employed so that entries may be made in a horizontal line across a work sheet when desired, duplicate copies are usually obtained in the ordinary manner by using.

a second work sheet with a carbon sheet or auxiliary ribbon carriedby the carriage and interposed between the sheets. When tally roll mechanism is employed it is usually mounted on the carriage to travel therewith and hence is set to take duplicate entries of certain columns only, the tally strip being wrapped around the platen with the record sheet.

According to my present invention I provide tally roll mechanism that is carried by a fixed part or parts of the machine and does not travel with the carriage. Hence, the record sheet R carried by the carriage will move relatively to the and obviously such a tally strip cannot be wrapped around the platen and cannot interfere with the traveling movement thereof. However with tally roll mechanism of my present eiect a duplicate printing in a vertical column onv the tally strip of every item entered, regardless of the movements of the carriage and the manner of distributing the same items on the record sheet carried thereby, and without interfering with the travel of the carriage and the work sheet which is carried by it.

Furthermore, according to my present invention I aim to eliminate the use of any interposed carbon sheet or auxiliary ribbon by employing a thin tissue tally strip of a transparent or translucent texture which will be fed in front of the regular inked ribbon ill, so that when the type are moved to printing position, in addition to the usual imprint being formed on the front side of a record sheet, an imprint will also be made upon the rear side of the tissue tally strip. Since the tally strip is of a transparent or translucent character the imprint may be read or inspected from the front side thereof. Such a method of printing on the rear side of a strip or sheet is known as ghost printing and, as mentioned above, eliminates the use of a carbon sheet or auxiliary ribbon and produces a regular inked duplicate copy.

In addition to the above, I aim to provide this mechanism for effecting ghost" printing on a tally strip, which may be applied as an attach-` ment to the regular Dalton computing machine described above; and provide, in conjunction therewith, mechanism by means of which the tally strip may be rewound on a separate roll at the front of the machine, the tally strip being fed to said roll in single line spacing movements upon each actuation of the operating handle I2.

Referring again to Fig. 1, it will be seen that I have provided at the rear of the machine a tally strip supply roll 44 which is supported by brackets 45 secured by screws 46 to the rear of the casing I0.. From the supply roll 44 a tissue tally strip T may be fed into a chute or guide 41. As shown in Fig. 6 this chute 41 may be formed of two thin strips of metal or other suitable material which constitute upper and lower cover members 48 and are heldapart by means of two separating strips 49. The cover members 48 and separators 49 may be secured together in any desirable manner, such as by welding, to thereby form the closed chute 41, having an internal opening or passage way 50 of suicient size to allow the tissue tally strip T to pass through.

It is the purpose of the closed chute 41 to lead the tissue tally strip T from the supply roll Q4 over the rear portion of the machine and beneath the carriage 2G and platen without interfering therewith, and thence upward to the printing line. Therefore, in order that the tally strip T may arrive at the printing line in a clean and undamaged condition, it is desirable to mount the chute 41 upon the machine in such a manner that there will be no sharp curves or cutting edges to mutilate the tissue strip when it is being drawn through said chute. Accordingly, as indicated in Fig. 1, I provide an upwardlybent lip or fiange 5i at the opening end of the chute 41 adjacent the supply roll 44 to aid in the insertion of the tally strip T into said chute and prevent said strip from being torn during feeding. At the rear of the machine the chute 131 is supported by means of posts 52 and may be secured to the top of the casing i0 at any convenient points and in any suitable manner, such as with the aid of screws 53. Thus, said chute 41 passes over the rear portion of the machine in a substantially horizontal plane, is then bent downward with as wide a curve as possible and led beneath the carriage and platen, as shown in Figs. 1 and 5, from where it passes upward in front of the type sectors i3. Upon approaching the printing line position, as indicated in Fig. '1, the chute passes in front of the printing ribbon i6 and terminates just above said ribbon. Obviously, such a manner of mounting the tally supply roll and leading it to the printing line position will in no way interfere with the movement of the carriage or the record sheet carried thereby.

Referring now to Fig. 2 it will be seen that the chute i1 is provided with a substantially reetangular cut-out portion at the upper end thereof. This cut-out portion 5d is deep enough to allow the tissue tally strip T to be4 exposed to the action of the types at the printing line and thereby receive imprints on the rearward side thereof during the printing operation of the types.

However, the cut-out portion 56 is slightly less in width than the width of the tissue tally strip T and thus forms marginal engaging and holding portions for said tally strip. It will be apparent that these holding portions 55 constitute supports for the tally strip and maintain it in a rigid and vertical position at the printing line thereby facilitating in the production of clear and well defined imprints on said strip and still hold the tally strip out of the path of movement of the carriage.

After being led from the supply roll 66 through the chute 61 to the printing line the tissue tally 5 strip passes upward to my improved automatic feedingand rewinding mechanism which will now be describ\ed.

Referring particularly to Figs. l, 2 and 5 it will be seen that my automatic feed and rewind device, which is designated as a whole by the reference numeral 58, comprises left and right side plates or frame members 51 and 58 (Fig. 2) supported and maintained spaced apart by means of suitable forward and rear guide rods or cross l5 bars 58 and 68 respectively. This frame is mounted at the front of the machine, forward of the carriage and directly over and forward of the type sectors I 3, by means of foot pieces 6| and conveniently secured to a part of the casing with the aid of screws 62. As shown in Fig. 5 the screws 62 are fastened into downwardly-projecting ears 63 provided on an auxiliary hood-shaped casing member 64 which covers that part of the actuating mechanism projecting above the mainv casing I8.

From an inspection of Fig. 2, which shows the parts in normal position though detached from the machine, it will be seen that a bail, comprising rearwardly projecting arms 65 and 66 pivoted at 61 and 68 to the side plates 51 and 58 respectively and connected at their rearward end by means of a cross bar 68, forms a support for a paper cutter 18 which is secured to said cross bar 68 by means of screws 1|. A nger piece 68 is provided on the arm 66 adjacent the pivot 68 for the purpose .of manually raising the bail as will hereinafter appear. Mounted on a shaft 12 which is journaled in the arms 65 and 66 at the ends thereof and below the cross bar 68, is a feed roll 18. A spring 14 attached at one end to the arm 65 and at its other end to the side plate 51, tends to turn the bail 65, 66, 68 in a counterclockwise direction (as the parts appear in Fig. 3) about its pivots 61 and 68 andmove the feed roller 18 into engagement with a second cooperating feed roller 15, by and between which feed rollers the tally strip is fed. The feed roll 15 is mounted upon a shaft 16 which is given a constant and definite feeding or line spacing movement with every actuation of the operating handie l2, as will hereinafter more clearly appear.

I shall now describe the means by which the above mentioned line spacing movements of the feed roll 15 are effected.

As the parts are shown in Fig. 8 the shaft 16 terminates at the right-hand endy thereof in a reduced portion 11 which is journaled in the side plate 58. If desired a washer 18 may be provided on the inside of the side plate 58 to reduce the 60 end friction of the shaft 16 against said plate.

Likewise the opposite end of the shaft 16 terminates in two progressively reduced portions 18 and 88 respectively, the former being rotatably mounted within a hub 8| which is fixed in the side plate 51. On the inside of the side plate 51 a driving gear 82 is fixed to the reduced portion 18 of the shaft 16 for rotation therewith by means of a pin 88. This gear 82 is used to drive a paper wind-up reel as will hereinafter more clearly appear.

A second hub 84 is mounted on thereduced portion 88 of the shaft 16 and secured thereto by means of a set-screw 85. 'I'his hub 84 has a ratchet wheel 86 fixed to the end thereof adjacent ,75 the hub 8| and at the opposite end thereof is provided with a knurled knob 81 so that the feed roll 15 may be rotated by hand if desired. The teeth 86* of the ratchet wheel 86 are adapted to cooperate with a feed pawl 88 which is pivoted at 88 to an arm 88 as shown in Figs. 2 and 5, said arm 88 being fixed upon a hub 8| which is rotatably mounted on the fixed hub 8 I. Thus, regardless of the movements of the shaft 16 the arm 88 may be moved as desired. As best shown in Fig. 5 the pawl 88 is held in constant engagement with the teeth 86* of the ratchet wheel by means of a spring 82 which is attached at one end to the pawl and at its other end to the arm 88, while a stop pin 88 limits the movement of he pawl 88 in the opposite direction.

Pivotally connected to the arm 88 at 84 and extending downwardly therefrom is a link which is pivotally connected at its lower end at 86 to a lever arm 81. 'I'he lever arm 81 constitutes one arm of a bell crank or actuating lever 88 which is pivotally mounted upon a pivot stud |88. The other arm |8I of said actuating lever 88 extends downwardly into the machine at a position in front of a roller |82 provided on the upper end of the usual right-hand hammer restoring arm |83 which insures a proper opera- .tion and return of the printing hammers |88! This arm |8I is held in constant engagement with the roller |82 by means of a spring |84, which is attached at one end to a pin |85 provided in said arm, and at its other end is attached to a pin |86 provided in a downwardly extending projection |01 of the guide plate 51. Thus. the arm I8I is held in normal position by the hammer restoring arm |83 and will follow the movement of said arm as will presently appear.

In the Dalton machine with each downward stroke of the operating handle I2 the hammer restoring arm I 88 will move toward the rear of the machine or to the right as shown in Fig. 5 and on the upward or return stroke of said operating handle the restoring arm |88 will be returned to its normal position shown in Fig. 5. It will befapparent that during such movement of the hammer restoring arm I 88, the arm 81 of said actuating lever 88 will first be moved upward and then will be returned to itsnormal position. Such movement of the arm 81 of the actuating lever will transmit an oscillatory motion to the pawl carrying arm 88 whereby said arm will first be moved in a clockwise direction, as the parts are shown in Fig. 5, and will then be moved in a counter-clockwise direction back to normal position. 'Ihis will cause the pawl 88 to first move back over the teeth 86 of the ratchet wheel 86 so that on the forward or counterclockwise movement of the pawl carrying arm 88 the feed roller 1 5 will be turned in a line spacing direction. As shown in Figs. 2 and 5, the arm 81 is limited in its upward movement by a stop pin I 88 and limited in its downward movement by a similar pin |88 provided in the side plate 51. A spring detent |I8 pivoted at ||I to the side plate 51 may be provided to engage the ratchet wheel 86 and prevent accidental displacement or advance thereof in the usual manner. It is to be understood that the construction and arrangement of the above described line spacing mechanism for the feed roller 15 is such that upon a return stroke of the operating handle I2 said feed roll will be rotated a distance sufficient to advance any sheet or strip fed between said roll 15 and the feed roll 13 a distance of one line space.

Therefore. when the tissue tally strip T is fed :assI

ing handle I2. When fed in this manner, the v finished or typed tally strip T may, if desired, be.

torn oil with the aid of the cutting knife 10. In

addition to the automatic feed of the tissue tally strip, said strip may be fed by hand either by turning the knurled knob 81 or vby releasing the l upper feed roll 13 with the aid of the finger piece '68 provided on the lever 03 and pulling the strip T up manually. If desir/ed, the tissue tally strip T may be guided in its movement from the chute II1 to the feed rolls 13, 15 by Yproviding guide flanges I I2 on the' cross bar 59,-as shown in Fig. 2. It will be recalled that as described above, when the normalizing button is set in normalizing" position the platen I0 may be rotated vupon each actuation of the operating handle I2 to feed the record sheet R a line space distance upon each such actuation. Therefore, when said button is in the normalizing position the tally strip and ledger sheet may be line spaced in unison and equal distances.

In addition to the means for' automatically feeding the tally strip in line spacing direction upon each actuation of the operating handle I2, J I have provided auxiliary means for winding said tally strip upon a reel or spool as said strip is fed from the feed rolls 13 and 15. I shall now describe the automatic winding mechanism.

Referring particularly to Figs. 2 and 4 it will be seen that I have provided a tally strip rewind reel or spool I I5 for receiving and winding thereon the tissue tally strip T as it is fed from the feed rolls 13 and 15. The rewind spool per se may, for the purposes of the present invention, 4

be of any suitable construction though that shown in the present instance is of the type disclosed in 4o the application of Norbert A. Jung, filed June 11,

1935 and bearing Serial No. 26,063 which matured as Patent No. 2,059,242 on Nov. 3, 1936 which, for the purpose of clamping or attaching a tally strip thereto, is provided with a special core ||5 that may be separated and closed by means of a push-rod I|1 having a nger button I I8 at the right-hand end thereof. The push-rod II1 serves as a shaft for the spool IIS at the right side thereof and is received in a hub IIS provided at the upper forward portion of the side plate 58. At the left-hand end of the spool I I5 and in axial alignment with the push-rod II1 there is a shaft portion |20 fixed to the lefthand portion of the spool and having a bearing ange |2I adjacent its point of attachment to said spool. The shaft portion |20 is received in a hub or friction member |22 having a bearing flange |23 at` the right-hand end thereof inside the side plate 51, said friction member |22 being in turn received or ,iournaled in a hub |24 provided in the side plate 51. A gear |25, which constitutes a driven gear, is loosely mounted on the shaft portion |20 inside the side plate 51 and between the bearing flanges |23 and |2| shown in Fig. 4 and meshes with an idler gear |20 (Figs. 3 and 5) which is pivoted to the side plate 51 by means of a headed pivot pin |21. The idler gear |26 also meshes with the driving gear 82 provided on the shaft of the feed roll 15 which, as described above, is given a line spacing movement with each actuation of the operating handle I2. Therefore, the driven gear |25 on the spool shaft portion |20 will be advancedv due to the Y |20 of thespool II5, said spool IIIi would be r0- tated Va corresponding extent each time the feed roll `15 was given a line spacing movement due to actuation of the operating handle I2. However, a positive connection between the winding spool I I5 and the rotating mechanism oi" thefeed 'roll 15 is not desired since it would result in a tearing of"l the tally strip T because' of increasv ing tension in said strip due to the increasing" diameter thereof as it is wound on the core ||6.

, That'is, if the rewind roll reel I|5 were rotated a constant amount at each actuation of the operating handle`I2, as the tally strip T was wound thereon, said strip T would be advanced a greater distance by rotation of the spool ||5 than it had been fed uniformly due to the action of the feed rolls 13 and 15. It will be apparent, therefore, that if the pressure between the feed rolls 13 and 151s too great it will effect a tearing of the spool I I5.

As shown in Fig. 4 and described above. the gear |25 is loosely mounted on the shaft portion I2I|l between` the friction bearing flanges |23 and I2 beyond the extremities of the hubs |22 and |24- and has secured at the end thereof a hollow cap or housing member |30. This member |30 is secured to the shaft portion |20 by means of a headed screw |28 received in a tapped opening |29 in the end of the shaft portion |20. Surrounding the shaft portion |20 and within the hollow cap |30 is a contractile expansion. spring I3I which bears at the inner end thereof against the end of the hub |22 and at its opposite end bears against the inner end wall of said cap |30. The tension of the spring I3I is great enough to push the hub |22 inwardly to cause a frictional engagement between the gear |25 and the friction flanges |23 and |2I and thereby effect a rotation of the spool ||5 when the feed roll 15 is turned to wind the tally strip 'I upon the core H6. However, the frictional engagement of the gear |25 is such that as the tension in the tally strip increases due to the increase in the diameter of the spool with the winding of the tally stripthereon, parts of the frictional driving connection between said gear and the spool will slip, one on another before the strip can be drawn' between the feed rollers or torn. Thus, by providing an automatic frictionally controlled connection between the driven gearv and the spool, I am enabled to prevent a mutilation of the tally strip T or too great a feed thereof, the amount of feed of said tally strip always being governed by the feeding means.

It will be understood that when the screw |28 is drawn up tightly, manual turning of the cap |30 will eifect a rotation of the entire rewind spool so that'the tally strip may be wound or unwound by hand when desired.

The shaft portion |20 projects to the left From the foregoing description it will be under- 10 riage or the record sheet;

(4) Simple and elcient means for rewinding a tally strip which includes means for controlling the line spacing and feed of said strip independently of the line spacing of the carriage car- 15 ried record sheet, though it may be in unison therewith;

(5) Tally roll mechanism which is independent of the carriage and may be readily applied as an attachment to existing computing, typewrit- 20 ing or like machines without modifying, or materially modifying, the existing structural features thereof; and

(6) Tally roll mechanism in which the tally strip is used to effect a duplicate printing without 25 the use of any auxiliary ribbon or carbon paper.

While I have shown with some detail a Dalton machine embodying my invention, it should be understood that the mechanism of my invention may be embodied in various machines differing widely in character; that parts of the mechanism disclosed may be employed without others and that various changes may be made in such mechanism without departing from my invention as it is defined in the accompanying claim.

What I claim as new and desire to secure by Letters Patent is:

In a calculating machine, the combination with the printing type andthe horizontally movable platen thereof, of a tally strip guiding chute for maintaining a tally strip in fixed horizontal relation to said type in all positions of said platen, automatically operating ratchet operating means, a tally strip feed ratchet operable by said means, a train of gearing operable by said ratchet, a tally strip take-up-spool formed with a shaftportion and a bearing face, said shaft portion forming a bearing for one gear of said train, a sleeve onsaid shaft portion and formed with a bearing face, a spring, and means operable for tensioning said spring so as tol cause said bearing faces to frictionally drive said take-up-spool.

ARTHUR W. FEIERTAG.

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