US2181999A - Printing mechanism - Google Patents

Printing mechanism Download PDF


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US2181999A US84783A US8478336A US2181999A US 2181999 A US2181999 A US 2181999A US 84783 A US84783 A US 84783A US 8478336 A US8478336 A US 8478336A US 2181999 A US2181999 A US 2181999A
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Albert W Mills
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International Business Machines Corp
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International Business Machines Corp
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Priority to US84783A priority Critical patent/US2181999A/en
Priority to FR827314D priority patent/FR827314A/en
Priority to GB16306/37A priority patent/GB497040A/en
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Publication of US2181999A publication Critical patent/US2181999A/en
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    • G06K17/00Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations


Dec. 5, 1939. w M|LL5 2,181,999
PRINTING MECHANISM Filed June 12, 1936 5 Sheets-Sheet l I VENTOR.
Dec. 5, 1939. A. w. MILLS PRINTING MECHANISM Filed June 12, 1936 5 Sheets-Sheet 2 FIG. 2.
ifl/w IN VEgV TOR. w BY z A TTORNEYS Dec. 5, 1939.
Filed June 12, 1936 A. W. MILLS PRINTING MECHANISM 5 Sheets-Sheet 3 FIG. 5. F
117 1?5 1?! I'll I89 ansp I I INVENTOR. Wm. flyzz BY A TTORNEYS.
A. W. MILLS Dem 5, 1939.
PRINTING MECHANISM Filed June 12, 1936 5 Sheets-Sheet 4 wwm III wwh QM. HU
NVENTOR wmhzd ma Em NE ATTORNEY Dec. 5, 1939. A. w. MILLS PRINTING MECHANISM 5 Sheets-Shet 5 Filed June 12 ATTORNEY .Fm J
Patented Dec. 5, 1939 UNITED STATES PATENT OFFICE PRINTING MECHANISM Application June 12, 1936, Serial No. 84,783
3 Claims.
This invention relates to record controlled accounting machines and more particularly to machines of this type provided with mechanism for automatically punching totals in a record card.
One of the objects of the invention is to provide ,an' improved summary card punching control mechanism for automatically punching totals.
Another object is to provide improved mechanism for punching totals during the normal operation of the accounting machine and without interrupting such operation.
A further object resides in the provision of a setup device controlled by the type carriers of the accounting machine to receive the total printed by the carriers and mechanism to punch said total under control of the setup device.
A still further object resides in the provision of improved mechanism which permits the association of a step-by-step type of punching mechanism with a total printing mechanism of the type wherein the digits of the total are concurrently printed.
A further object resides in the provision of mechanism for delaying the further operation of the accounting machine if the total punching is not completed before the subsequent total printing operation of the accounting machine.
Heretofore, in combinations of accounting and punching machines, upon the impendance of a total printing operation, the accounting machine came to rest during which period the punching machine operated to punch a total card and the accounting machine thereafter resumed operation to print the total and receive data from further record cards. This entailed a delay in the complete operation of the system and required the sum of the time taken by the accounting machine to tabulate and print the total of a group of cards plus the time to punch the total, digit by diglt.'
With the present arrangement, the punching operation overlaps the total printing and tabulating time so that the total time required is no greater than that of the accounting machine itself. Provision is made so that if the total punched contains a great many digits and the group of cards tabulated is small so that tabula tion is completed before the previous total has been punched, the accounting machine will cease operation until the punching has been completed.
Various other objects and advantages of the invention will be obvious from the following particular description of one form of mechanism embodying the invention or from an inspection of the accompanying drawings; and the invention also constitutes certain new and useful features of construction and combination of parts hereinafter setforth and claimed:
In the drawings:
v Fig. 1 is a cross section of the printing mechanism of a tabulating machine showing the set-up device which is controlled by the type carriers.
Fig. 1a is a detail of a clutch device.
Fig. 2 is a detail at an enlarged scale of the set-up device.
Fig. 3 is a detail of the set-up device in another position.
Fig. 4 is an end view of the setup device.
Fig. 5 is a timing diagram of certain of the cams and electrical devices required to carry out the invention.
Fig. 6 is a cross section of the essentialoperating mechanism of the punch.
Fig. 7 is a detail of the punch magnet operating contact mechanism.
Fig. 8 is a detail of the punch carriage escapement mechanism.
Fig. 9 is a wiring diagram of the electric circuits of the arrangement.
The tabulating machine, which will first be described, is the same as that shown in the patent to J. R. Peirce No. 2,042,324, granted May 26, 1936 and the description thereof will accordingly be limited to the features essential to an understanding of the present invention.
The general operation will be explained with reference to the wiring diagram (Fig. 9) and the reference characters employed will be those of the patent so that ready reference thereto may be had.
To start the machine, the main switch 400 will be closed to supply current to the motor .IZ to start the main drive shaft of the machine and other constantly running shafts upon which the 40 contact controlling cams prefixed CR. are mounted.
Presuming several groups of cards to be in the machine, the feeding of the cards one by one and the sensing of the data contained thereon may be 45 started by depression of the start key ST to close contacts STI and STZ. This sets up a circuit from line 24l, contacts 8T2, card feed clutch magnet 48, contacts T1, 368 and STI, stop key contacts 402 to wires 403, 404 to the other side of a line 249. Contacts 388 which are operated by magnet 48, close to short circuit contacts STI as long as magnet 48 remains energized. The energization of the card feed clutch magnet 48 releases the card feed clutch for operation and the feeding of the cards commences immediately. As the cards advance to pass the analyzing I brushes 62 and 63 in succession, the usual card levers 10 and 1| are engaged to shift their related contacts. If it is desired to print the items sensed by the brushes, switch S4 is closed, as shown, so that after closure of start key contacts S'Il and LCLI, a circuit will be established from line 23l, through wire 405 to print clutch magnet 39, thence throughgwire 406, switch S4, contacts LCLI, 368, 388,and 402 to wires 403, 404 and line 249.
The closing of contacts UCLI and UCL2 sets up a circuit from line 24!, wire 401. contacts UCLI, UCL2, wire 408, wire 40%, to magnet 48 and thence, through the circuit previously traced, to line 249. Cam contacts CFi are provided to maintain this circuit during the interval between cards when contacts UCL2 and UCLi are open.
Listing circuit.If it is desired to effect listing of'the data contained in a specific column on the card, the plug socket 630 associated with that particular column will be connected by means of a plug wire M0 to a socket Mi. Upon sensing a perforation, the following circuit will be completed: from line 296, wire 6H2, contacts LCLZZ, (TF3, brush 6%, contact roller 63a, brush 63, socket 630, plug wire Mil, plug flit, cable M3, to a wire 464% corresponding to the selected column wire M5, print magnet llilll, lous bar 329, wire 325 to linei lt. The type carrier will thereupon be interrupted with the type element-corresponding to the location of the perforation sensed, in printing position.
Adding circuit-If it is desired to efiect adding of the amount, a plug wire 60?; is connected as shown so that a circuit traced as follows is completed when a hole in the card arrives at the brushes 63. From line 2 3i, to contacts LCL2, contacts CF'3, brush 6%, roll 63a, brush 63, plug 630, wire 6l5, plug 326, contact 250, adding magnet 200, bus bar 241, Wire 2&8, to line 249.
Group controL-In this art the cards are usually grouped according to transactions or commodities or salesman. In such case the cards of each group are given a special designation which usually takes the form of a number registered in certain columns of the cards. This number is utilized to control the stopping or other operations of the machine so that when thelast card of a group passes through the machine the machine may be caused to stop or to take a total of the group. A representative group controlling circuit for a single column may be traced as follows: from line 2 to wire 2, contacts LCL2, CF3, brush 63b, contact roller 63a, brush 63, plug 630, plug connection to socket 350b, group control magnet 350, socket 350a, plug connection to socket 620, brush 62, contact roll 62a, brush 62!), wire 8, contacts T8 to line 249.
Energization of magnet 350 closes its contacts 353 and since control by but a single column is assumed, a plug connection 9 is used to bridge plug socket 420 and plug socket 42i and switch SI is closed. If it is desired to have the machine stop upon detecting a group number change, switch S3 is shifted to its dotted line position and a circuit becomes established as follows: from line 249, wires 404, 403, resistance 422, cam contacts CRI which close for a short interval, wire 423, uppermost contacts 353, socket 42l, wire 9, plug socket 420, switch SI, contacts UCLQ, wire 401 to line 2. this circuit shunts around magnet 361 which is of greater resistance.
If the compared cards fail to agree and conaisncee tacts 353 consequently remain open, the full flow of'current will pass from contacts CR! through wire 424, magnet 361, switch S3 to plug socket 420 and thence to line 241 as before. Energization of magnet 361 opens its contact 368 thus breaking the circuits through the clutch magnets 39 and 48 to stop the machine.
It is now necessary to operate total key 363 to close contacts 365. This establishes a circuit from line 2, wire 401, contacts UCL3 (now closed), magnet 254,,wire 424, contacts CRI, resistance 422, wires 403, 404, to line 249. Energization of magnet 254, as usual, causes the machine to initiate a total taking cycle of operations to print the total standing in the accumulators. Closure of contacts T6 by magnet 254 causes energization of print clutch magnet 39 so that the printing mechanisms may operate in synchronism with the accumulator elements.
If it is desired to have the machine enter upon a total taking cycle automatically upon a group number change, switch S3 is set in its full line position and the control circuit will then branch through magnet 254 instead of magnet 361.
A pair of contacts T1 under control of magnet 254 is held open during the total taking operation to insure inaction of the card feeding devices.
Restarting circuit.--If it be desired to automatically resume card feeding and accumulating of the following group of cards, switch S2 is closed so thatas the total printing cycle nears completion, closure of cam contacts P2 will complete a circuit from line 2&9, wires 494, 403, contacts 402, switch S2, contacts P2, Tl, card feed clutch magnet 48, wire 40H, wire 408, contacts CFi, wire 491 to line 2.
Total printing circuit.-When a total is to be taken magnet 254 is energized as explained and various contacts are shifted as a consequence. Such contacts are indicated in Fig. 9 by having magnet 254 dotted adjacent thereto. During the cycle following energization of magnet 254, cam contacts CR4, CR5 operate to transmit an impulse through the total taking circuit at an instant corresponding substantialy to one point in advance of the 9 index point position on a card. With contact blades 256, 251, 258, 259 and 260 shifted from the position shown so that contacts 258, 260 and 251, 259 are closed and contacts 256, 259 are open, contacts CR4, CR5 complete a circuit from line 2, contacts T4 (now closed), contacts CR4, CR5, line 3| 9, contacts 260, 258, cable 320, plug sockets 32l, contacts 250, adding magnets 200, bus 241 to line 249 through wire 248.
This energization of magnets 200 engages all the accumulators for a cycle of rotation which were not already standing at zero position. During the rotation of the accumulator wheels the type bars rise in synchronism with the movement of the register wheels and the attached commutators 3. The motion of each type bar is arrested by an impulse through its printer magnet l0l, through a circuit traceable from line 2, contacts T5 (now closed), cam contacts CR2, CR3, wire 322, brush 3l6, commutator insert 3, brush 3l5, wire 323, contacts 251, 259 to printer magnet l0l, bar 324, wire 325 to line 249. Thus, the counter wheels, when their segments 3 are or arrive at zero position send an impulse to interrupt the associated type bar with the type element corresponding to the value standing on the accumulator wheel, in printing position.
Printing mechanism-The printing mechanism is shown in Fig. 1 wherein is illustrated the usual type bar 12 having type elements I03 and mounted for vertical reciprocation in the frame of the machine. The reciprocation is brought about by cams 92 carried by the shaft 35 which rotates when print clutch magnet 39 is energized. The cams oscillate follower 88 which through link 90 and arm 81 rocks shaft 86 upon which is fixed bail 93. This bail has link connection 84 to a bail 11 and spring connection 16 to arms 14 pivoted at 15 and connected at their opposite ends to links 13 pivoted to the type bars. Through this mechanism the springs 16 elevate the type bars to successively present type elements I03 to the platen I41 as the corresponding index positions on the cards pass the sensing brushes. Printing magnet l! upon energization as explained, will attract its armature to rock a latch 99 and release a pawl 91 for engagement with ratchet teeth 96 carried by the type bar to intercept the same.
After all the type bars have been thus positioned the usual printing hammers H4 are tripped to take an impression from the type elements at the printing line.
The above generally describes the operation of the tabulator mechanism necessary to an understanding of the operation of the present invention. For further details of construction, reference may be had to the Peirce patent referred to hereinabove.
Set-up device.For the purposes of the present invention, each type bar 12 is provided with an extension 500 at its lower extremity .(Figs. 1, 2, and 3) upon which is pivoted a spring-pressed pawl 50L Each pawl 50! cooperates with teeth 502 in a frame 503 which is mounted for vertical movement in a frame 504 which in turn is mounted for horizontal movement in the frame of the machine. Frame 503 carries a contact roller 505 insulated therefrom which rides between a spring-pressed vertical bar 506 and a plurality of transverse conducting bars 501. The frictional engagement caused by pressure of bar 506 against roller 505 serves to hold the roller and its frame 503 in any position to which it may have been set.
The action of the parts is such that while the type bars 12 are rising to take position during a total taking cycle of operations frames 503 are reset to their uppermost positions as shown in Fig. 2. The means for effecting this comprises a bail 508 which is mounted on a shaft 5l0. Also secured to the shaft is an arm 509 to which is pivoted a dog 5 which is adapted to engage a notched member 5l2 freely mounted on shaft 5i 0 and connected by a link 5l3 to an arm 5 i4 secured to a shaft 5 l 5 which has a follower arm 5 I 6 whose roller rides on a cam 5I1 on shaft 35. In the normal position of the parts dog 5 is disengaged from member 5". as shown in Fig, 1a with the tail of the dog abutting armature 5|8 of magnet 5|9. Member SM is oscillated each cycle of print shaft 35 without effect, but at the beginning of the total taking cycle, as will be explained, magnet 5l9 is energizedto release dog for engagement with member 512 and bail 508 will restore the frames 503. On the return stroke, dog 5 I will be intercepted by armature 5! and the parts again disengaged.
Following the restoration of the frames 503 the supporting frame 504 is moved toward the right from the position of Fig. 2 to that of Fig. 3. This is effected as follows: Frame 504 carries a rod 520 (Fig. 2) engaged by aslotted arm 5 -in dotted outline.
scended, frame 504 is retracted, with the framesv which is secured through a sleeve 522 to an arm 523. The arms and sleeve are loose on shaft 524. Arm 523 carries a spring-pressed dog 525 which normally has its tail in engagement with armature 526 of a magnet 521 so that spring 528 connected to an extension of arm 52l holds the parts in the position of Fig, 2. Upon energization of magnet 521, dog 525 engages in a notch in member 529 secured to shaft 524 which through arm 530 is rocked by cam 53l on shaft 35, This engagement takes place after the type bars have risen and frame 504 is shifted to the right so that teeth 502 may be engaged by pawl 50! of the type bar before the bars are restored downwardly.
The tooth 502 engaged by any pawl 50l will de-= pend, of course, upon the height to which the pawl has been raised and during the restoration of the type bars the frame 503 is lowered the distance that the bar initially rose. That is, if the bar 12 rose to present a 9 to the printing position, traversing nine steps as shown in Fig. 3, frame 503 will be lowered nine steps as indicated After the bars have fully de- 503 in displaced position where they remain until the beginning of the next total taking cycle. The relative positioning of rollers 505 and transverse bars 501 serves as a convenient means for controlling punching operations as will be set forth hereinafter.
The magnets 5|9' and 521 are shown'in Fig. 9
and are energized upon closure of cam contacts P4 and P5 respectively. The timing of these contacts is shown in Fig, 5 where it will be observed that contacts CFB are open during the period of closure of contacts P4 and P5 so that no circuits can be completed therethrough during card feeding operations. Upon a group change, however, the card feed comes to rest with contacts CFB in closed position so that, with switch Sl0 closed, P4 and P5 which operate during the total printing cycle will energize their respective magnets 5|9 and 521 in succession to first restore the set-up device and then shift it to receive the total printed.
The punching machine which will now be described is generally of the form shown in the Lee and Phillips Patent No. 1,772,186, granted 5 August 5, 1930 and the description thereof will be point position of a column of the record card.
Energization of magnet 540 will attract its armature to rock an arm 54! in a counterclockwise direction about its pivot 542, thus moving key 543 downwardly to rock a bell crank 544 which has connection with an interposer 545 suitably mounted for horizontal reciprocation. The forward or left end of the interposer 545 is suitably guided between an operating bar 546 and the upper end of a punch 541. 1
Forward movement of the interposer-will posi tion its widest portion between bar 546 and punch 541 so that subsequent counterclockwise rocking of bar 546 will move the interposer and punch downwardlyto perforate the record card 549. 5 notch 550 in the interposer 545 cooperates with a bar 55l to rock the same in a counterclockwise direction when the interposer is moved toward the left. Rocking of bar 55! in such manner will 4- airspace plete a circuit through the punch magnet 554 causing it to attract its armature 555 and through linkage generally designated 556 draw downwardly on the bar 546 to cause depression of the 5 selected punch 541. Depression of key 543 may,
of course, be effected independently of the operation of the-magnet 540 for the purpose of manually controlling punching operations.
Disposed beneath the interposers 545 is a bar 10 551 which is carried by a rod 558 upon one end of which is secured an arm 559 (Fig. 8) for operating the escapement mechanism, this escapement mechanism comprising a pawl 560 pivoted at 56l tothe frame of the machine and a step- 15 ping pawl 562 loosely pivoted on rod 558 and normally urged by a spring 563 into engagement with the teeth 564 on the upper edge of the carriage rack 565. Rocking of rod 558 in a counterclockwise direction under the action of m an interposer 545 will lower pawl 560 into engagement with a tooth 564 to hold the rack 565 in position while punching is being effected. This action, at the same time, raises pawl 562 out of engagement with teeth 564 and, by virtue of the loose connection of pawl 562 upon rod 558, will move slightly toward the right in readiness to intercept the next tooth 564 when the rod 558 is returned to its original position.
The rack 565 is suitably mounted for horizontal movement in the frame of the machine and may be manually moved to the right to the po=- sition shown wherein a record card 5% is placed in position with the first column thereof in line with the punches 541. Gear teeth out on the underside of the rack cooperate with suitable gearing 51! which is connected to the usual spring barrel 512 which tends to move the rack toward the left and which efiects such movement under control of the, escapement mechanism just de- 40 scribed. An arm 513 carried by the rack 565 is provided for cooperation with the card 549 to move it to pass by the punches 5G1 column by column. 1
The above briefly describes the mechanism nec- 45 essary to an understanding of the operation. of the punch. For further details of construction reference may be had to the Lee and Phillips" patent cited. Further reference may also be made to the patent to Lee and Daly, No. 1,976,- 5 618, granted October 9, 1934 which discloses the same type of punching machine provided with automatic card feeding mechanism.
Rack 565 carries an arm 515 (Fig. 8) which when the last card column is in punching posi- 55 "tion will engage an insulating block .516 and open a pair of contacts 511. The bar 565 is also provided with the usual forward card guide 514 to which, for the purposes of the present invention, is secured an insulating member 518 60 carrying a pair of electrically connected brushes 519, the lower of which traverses a strip of conducting material 580 and the upper traverses a plurality of contact segments 58l.- The strip 580 and segments 58I are embedded in a bar 582 of insulating material which is secured to the frame of the machine. The spacing of the segments corresponds to the spacing of the card columns and the relationship of the parts is suchthat the punches 541 are in position to perforate 70 the first column of the record when the brushes 519 connect the first segment 58! with the strip 580 and positioning of the punches over any other column of the card will be accompanied by bridging of the corresponding segment 5% and the common strip 580 by the brushes 51$ The manner in which the total set up by the type bars is punched will now be explained in connection with the circuit diagram (Fig. 9). It will be recalled that, with the machine conditioned to stop upon a group number change, total taking is initiated by operation of total key 363. This caused energization of magnet 254 P and brought about a cycle of operation of the printing mechanism during which the P cams operate. Magnet 254 closes a pair of contacts TIO so that when contacts P6 close near the end of the total taking cycle, at which time the reading of the total printed will havebeen set on the frames 503, a circuit is completed from line 24], last column contacts 511, a magnet 590, contacts TN, and P6 to line 249. Magnet 590 closes its contacts 590a to set up a holding circuit which is maintained until contacts 511 open.
After the total taking cycle card feeding and accumulating resume as usual while punching takes place. In Fig. 9 the bars 506 and 501 are diagrammatically represented with the rollers 505 set to connect the same to represent, for example, the digits 3479.
Magnet 590 closes a group of contacts 5901) upon whose closure punching immediately begins. With brushes 519 standing on, say, the first segment 58! to the right in Fig. 9, a circuit is traceable from line 249, strip 580, brush 519, first segment 589, a plug connection 592,
first bar 506, roller 505, the 9 bar 501, contacts 590?), the "9 punch selecting magnet 540 to line 24L As explained, energization of magnet 540 advances the related interposer which causes closure of contacts 553 to energize the punch magnet 554 whereupon the 9 index point position of that column is perforated and the carriage escapes to the next columnar position and the selection and punching is repeated until all the card columns have traversed the punching position and the carriage arrives in last column position where contacts 511 are opened to deenergize magnet 596 so that it willbe in readiness to be picked up again during the next succeeding total taking cycle.
Where the number of cards in a group is very small it may happen that tabulation of such group is completed before punching of the total of the preceding group has been completely effected. In such case, when the machine is conditioned to stop upon a group change, the Operator simply waits for punching to cease beforedepressing the total key 363. In order to assure this, a pair of contacts 5900 are included in series with total contacts 365 and these contacts open and remain so throughout the punching operation.
To delay the total taking cycle, for the same reason when the machine is conditioned for automatic operation, pairs of contacts 590e and 590d are provided which are open and closed respecftively by their controlling magnet 590 during punching. The contacts 590e prevent the automatic energization of magnet 254 and the contacts 590d direct the circuit through magnet 361 which, as has been explained, causes cessation of cardfeeding and printing. Upon completion 3 of punching when magnet 590 is again deenergized, contacts 590a again close so that magnet 254 may be energized upon the next following closure of cam contacts CRI.
Whilethere has been shown and described and pointed out the fundamental novel features of the invention as applied to a single modification, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention therefore to be limited only as indicated by the scope of the following claims.
What is claimed is as follows:
1. In an accounting machine having record card feeding means, sensing means, an accumulator controlled by said sensing means to accumulate amounts sensed in successively fed record cards, printing mechanism including one or more type carriers and means for advancing and restoring a carrier, control means to cause a carrier to take a differential setting during its advance, in accordance with the digital position of an accumulator element, group control mechanism operative to interrupt the operation of said card feeding and sensing means, and set said control means to cause printing of said digital position, and means to render said card feeding and sensing means effective again upon termination of said printing operation, in combination with one or more differentially positionable contact members, means for efiecting coupling of a member with a carrier after the carrier has been difierentially set whereby the mem her will be moved with the carrier during its restoration to efiect a setting of the member in accordance with the setting of the carrier, a series of magnets, one for each position of a contact member, a circuit connection completed by a contact member to energize the magnet related to the position in which the member is set, means for rendering said circuit connection eflective after said printing and for main taining it while the subsequent feeding and sensing operations take place, and means for restoring said member to zero position.
2. The invention set forth in claim in which the carrier is provided with a pawl difierentially advanced with the carrier, the contact member is provided with a series of teeth and said coupling means comprises means for sliding said member transversely to the direction of advance a of said carrier to bring said series of teeth into engagement with said pawl whereby upon restoration of the carrier the pawl will move the member therewith through engagement with one of said teeth.
3. A device for taking a reading from a type bar including means for effecting a linear movement of a type bar to advance the same to printing position and restore the same, a guide member mounted for reciprocation in a direction transverse to the direction of movement of the type bar, a frame carried by said guide member and slidable thereon in the same direction of movement as the type bar, means for moving said guide member toward the type bar after the bar has been advanced to printing position to engage the frame therewith whereby said frame will be displaced on the guide member during the restoration of the type bar and in the same direction, a distance equal to the initial advance of the bar, means for moving the guide member and its displaced frame out of engagement with the type bar after the bar has been restored and means for restoring the frame to its initial position on the guide member while the frame and bar are disengaged.
Patent No. 2,181,999. December 5, 1959.
It is herebycertified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, second column, line L claim 2, for the claim reference'numeral "10'' read 1; and that the said Letters Patent shouldbe read with this correction therein that the same may conform to the record of the case in the Patent Office.
Signed and sealed this 2nd day of April, A. D. l9h0. Q
Henry Van Arsdale, (Seal) Acting Commissioner of Patents.
Patent No. 2,181,999. December 5, 1959.
It is herebycertified that error appears in the printed specifi cation of the above numbered patent requiring correction as follows: Page 5, sec- 0nd column, line b claim 2, for the claim reference-numeral "10" read 1; and that the said Letters Patent should be read with this correction therein that the s'amemay conform to the record of the case in the Patent Office.
Signed and sealed this 2nd day-of April, A. D. 1910.
Henry Van Arsdale, (Seal) Acting Commissioner of Patents.
US84783A 1936-06-12 1936-06-12 Printing mechanism Expired - Lifetime US2181999A (en)

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Application Number Priority Date Filing Date Title
US84783A US2181999A (en) 1936-06-12 1936-06-12 Printing mechanism
FR827314D FR827314A (en) 1936-06-12 1937-05-29 Improvements to accounting machines, in particular tabulating machines
GB16306/37A GB497040A (en) 1936-06-12 1937-06-11 Improvements in or relating to record-card controlled statistical apparatus

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490348A (en) * 1949-12-06 Ghertman
US2543435A (en) * 1945-12-29 1951-02-27 Gorton George Machine Co Record forming, translating and printing apparatus, and automatic control mechanisms therefor
US2558941A (en) * 1949-01-31 1951-07-03 Ibm Record controlled machine
US2756823A (en) * 1951-10-25 1956-07-31 Laville Transducer for actuating a card-punching machine or the like from a rack computer or the like

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490348A (en) * 1949-12-06 Ghertman
US2543435A (en) * 1945-12-29 1951-02-27 Gorton George Machine Co Record forming, translating and printing apparatus, and automatic control mechanisms therefor
US2558941A (en) * 1949-01-31 1951-07-03 Ibm Record controlled machine
US2756823A (en) * 1951-10-25 1956-07-31 Laville Transducer for actuating a card-punching machine or the like from a rack computer or the like

Also Published As

Publication number Publication date
GB497040A (en) 1938-12-12
FR827314A (en) 1938-04-25

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