US2661683A

US2661683A - High speed printing mechanism

Info

Publication number: US2661683A
Application number: US8929A
Authority: US
Inventors: Horace S Beattie
Original assignee: International Business Machines Corp
Current assignee: International Business Machines Corp
Priority date: 1948-02-17
Filing date: 1948-02-17
Publication date: 1953-12-08
Anticipated expiration: 1970-12-08
Also published as: USRE24131E; GB662160A

Description

Dec. 8, i953 H. SBEATTIE HIGH SPEED 'PRINTING MECHANISM 6 Sheets-Sheet 1 Filed Feb. 17, 1948 INVENTOR #063405 6. BMW/E .ATTORNEY Dec. 8, 1953 s, -rm 2,661,683

HIGH SPEED PRINTING MECHANISM Filed Feb. 17, 1948 6 Sheets-Sheet 2 INVENTQR HOE/905 6. 61597776 BY v MMA

ATTORNEY Dec. 8, 1953 H. s. BEATTIE HIGH SPEED PRINTING MECHANISM 6 Sheets-Sheet 3 Filed Feb. 17, 1948 INVENTOR HORHCE 6. BfflTT/E WJL ATTORNEY 3 Dec. 8, 1953 s. BEATTIE HIGH SPEED PRINTING MECHANISM 6 Sheets-Sheet 4 Filed Feb. 17, 1948 [I I 5] El E1 IE E m m /W TQw N J m x mm. m W I I I w l I I E W S E @n m E m; E E W m@ I 2 Dec. 8, 1953 H. s. BEATTIE 2,661,683

HIGH SPEED PRINTING MECHANISM Filed Feb. 17, 1948 6 Sheets-Sheet 5 INVENTOR HORACE S Bf/FT/f BY .M 42M ATTORNEY j Dec. 8, 1953 H. s. BEATTIE HIGH SPEED PRINTING MECHANISM 6 Sheets-Sheet 6 Filed Feb. 17, 1948 4 INVENTOR #05905 6: 55/1 7776- BY mg ATTORNEY Patented Dec. 8, 1 953 salsa HIGH SPEED PRINTING MECHANISM Horace S. Beattie, Poughkeepsie, N. Y., assignor to International Business Machines Corporation, New York, N. Y., a corporation of New York Application February 17 1948, Serial No. 8,929

Claims. 1

This invention relates to printing devices and more particularly to printing devices controlled by designations in a record to print a succession of characters.

The principal object of the invention is to provide a novel high speed printing apparatus in which a plurality of characters are spaced in columns and rows on the surface of the segment of asphere Whose spheric center is located opposite a printing point past which a receiving strip or sheet is fed. To select a character for printing, the segment is tilted to bring the desired character opposite the printing point. Thereafter, the segment with its center is thrown bodily against the paper to make an impression thereon of the selected character.

A more specific object of the invention is to provide a simple control mechanism for selectively positioning the spherical segment so that it moves directly from one character to the next without returning to its initial opposition.

A still further object of the invention resides in the provision of a record sensing mechanism for sensing character designations in a record card or strip in successive order and during uninterrupted movement of the strip with the characterselecting devices coordinated so that each succeeding designation is sensed While an impression is being taken in accordance with the preceding selection.

Other obiects of the invention will be pointed 1y represented as driven from a motor M through out in the following description and claims and illustrated in the accompanying drawings, which disclose, by way of example, the principle of the invention and the best mode, which has been contemplated, of applying that principle.

In the drawings:

Fig. l is a front elevation of the apparatus.

Fig. 2 is a plan elevation of the apparatus.

Fig. 3 is an isometric view showing part of the character selecting mechanism with the connections to the impression elements.

Fig. 4 is a diagram of the scheme of connections.

Fig. 5 is a diagram showing the arrangement of Fig. 8 is a detail of the type carrier and its supporting elements.

Fig. 9 is a wiring diagram with the record sensing mechanism incorporated therein.

Referring to Figs. 1 and 2, the apparatus is supported on a base it to which is secured a vertical front plate l! and back plate l2 tied together by cross bars 63. .The top plate 14 fastened to cross bars it supports the paper and ribbon mechanism. The printing platen is represented at I5 (Fig. 2) and is rotatable on a stud It in plate M. A aper strip H is fed from a suitable supply roller around the platen and between a feed roller 18 and spring-pressed follower It. An ink ribbon 2E5, fed from'a suitable source, is guided across the platen in front of the paper strip ll by guide rollers 2i and is advanced by a feed roller 22 and spring pressed follower Z3.

Rod 2% upon which roller 22 is secured, carries a gear 25 (see also Fig. l) which through an idler 2t meshes with a similar gear 2'! on the rod 28 supporting paper feed roller la. The rod 28 has worm and wheel connection 29 with a shaft 30 Which carries a gear 3| meshing with an idler 32 which in turn meshes with a gear 33 secured to. main drive shaft 34. This shaft is continuously driven, and through the chain'of gearing traced, it will be noted that with the shaft 3 3 in motion the paper strip El and ink ribbon 25 move with a continuous uninterrupted motion.

Referring to Fig. 9, shaft 3 5 is diagrammaticalreduction gearing 35, Through further gearing generally designated 36 a shaft 3? is driven and this, through rollers 38, serves to feed a record card 39 "past a row of sensing brushes it! and conthe characters on the impression element looking represent different characters.

tact roller 4| with a continuous movement.

The record card 39 .is provided with columns designated 42 in which perforations 43 are combinationally made in six rows designated M to Rows 44 are divided into an upper set of three designated V and a lower set of three designated H with the individual rows in the sets designated as 2, 1, and

The following table I lists the characters that may be represented and the particular perforation combinations for each. Thus, for example, the numeral 2 is represented by holes in the +4 row of field V plus holes in all three rows of field Table I Each sensing brush dllis connected to client a group. of magnets 45 which .are designated to identify themwith' the rows with which each-is associated. Thus, as the card passes brushes 4.3, the magnets'55 willbe repeatediy energized in combinations corresponding to the perforation arrangement. The circuit extends from current line. 46, through cam controlled contacts 41 .(operated by cams on shaft contact riollerfll, holes in the card, brushes 40, magnets 45'to opposite line 48.

The: gear ratio between shafts 34 and 31' is such that one column 42 of the card passes the line'of brushes for each half revolution of shaft 34, and the contacts '41 are adjusted to repeatedly make and'break the circuits while the columns are sensed.

A print magnet'50 is wired. to contacts 41 so that it is energized once-each half cycle of shaft 34 in time with the period of energization .of magnets 45. In the operation of thedevice; card 39 is placed in. position as diagrammatically shown with brushes 46 in advance of. the first column of perforations. Thereafter, switch 5| is closed to supply current to motor M and shaft 34 will be driven to advance the card contacts 41' will complete the sensing circuits and concurrently energize the print magnet50.

Referring now to Figs. 1 and 3, shaft 35 has secured thereto a cam'52 which cooperate with a bell crank follower lever 53 pivoted at 54 and normally" biased bya spring 55 in a clockwise direction. The lower extremity of the lever is engaged by armature 55 of magnet 50, so' that' with the magnet deenergized, the lever is restrained against following the contour of the cam. Upon energization of magnet 50 with the parts in the relative position shown in Fig. 1, lever 53 is rocked by spring 55 to turn clockwise under control of the cam 52 and will draw a link 51 downwardly. Pins H0 in cam 52 serve to engage a finger Ill extending from armature 56 to restore the latter. The link 51 connects with a hammer 58 pivoted freely on a rod 59 supported by a block 66 secured to plate H.

.Ihe rod 59 supports a vertical lever 6| (see Fig. 8) whose upper end caries a cage 62 having integral rods 63 extending through holes in the lever 6|, so that the cage may oscillate in a vertical plane. Secured to one of the rods 63 .is a pulley-segment 64'with a finger 65 upon which a'ispring. 66 acts to urge the segment in a counterclockwise. direction. A cable 61 through selecting mechanismyet to be described, will draw the segment clockwise or will slacken to allow spring 66 to rock the segment counterclockwise. In the normal position of the parts as in Fig. 8, spring 66 acting through segment 64 urges lever B l clockwise against a limit stop pin 63. Accordingly; when magnet 50-is energized, cam 52 will rock' hammer 58 against the lever 6! to rock the latter in a counterclockwise direction.

Cage 62 has a vertical rod 69 therein to support a stem ID-which may thus oscillate in a horizontal plane about rod 69. A spring H extending between rod 63 and stem!!! (Fig. 3) biases the stem in one direction and a cable I2 through the selector mechanism may pull the stem :in the opposite direction against the spring action or may slacken to allow the spring to rock the stem.

From the foregoing, it will be noted that a socalled universal joint is provided with the point of intersection of the axes of.

rods

69 and 63 constituting a point about which stem 10 can be'rocked in any direction. The left end of stem 10 .(as viewed in Figs. 3 and 8) has secured thereto a type carrier or head 15 which has a spherical surface whose sphericalcenter isthe point of intersection of the axes of

rods

69 and 33. The stem 10 lies normally in the plane of platen l5, and as the stem is rocked universally,.any point on its surface may be brought into the plane of the platen or more specifically into a line extending from the pivot point to the axis of the platen. Accordingly, if the carrier is so positioned and hammer 58 is then actuated, the presented point of the carrier will be impelled toward the platen and against the ribbon and paper therebetween.

A'plurality of type characters 16 are'disposed onthe surface of the carrier 15 arranged vertically in great circles and longitudinally in chordal circles as shown in Fig. 5. In this figure the characters are viewed looking toward the platen and in normal or rest position a blank space directly'belowthe character H is in line with the platen so that, if the hammer is actuated with the carrier in such position, no printing will take place.

To select a character for printing, the carrier is shifted up or down and right or left from its normal position to bring the. character into the +1, 0, 1, 2, and 3. These designations correspond to punching positions in the rows and columns of the record card wherein, if for the V and H fields the designated values for any character are algebraically added, the result will represent the extent of vertical and horizontal movement of the carrier to present the related type for printing such character. For example, the letter B (see Table I) is represented by V values 2 and +4 and by

H values

2, 1, and +4. Combining these algebraically, V equals +2 and H equals 5+1. Turning to Fig. 5, it is seen that the letter B lies at the intersection of the +2 chordal circle ordinate Va and the ,+1 great circle ordinate Ha, so that to present letter B for printing the carrier is to be shifted one column to the right and two rows down. In a similar manner, other characters may be inspected and from Table I the extent and direction of movement of the carrier may be determined to present such characters to the printing position.

Vertical positioning mechanism. -There is provided a separate mechanism for effecting the vertical positioning and this will be first described. Referring to Figs. 1, 3, and 4, the cable 6! extends from segment 54 around a grooved wheel 80 mounted on an armature of bell crank Bl pivoted at 82, thence around a wheel 83 pivoted on the fixed plate I, thence around a wheel M mounted on a lever 85 pivoted at 86 and thence to the upper end of a lever 87 to which it is secured.

The levers 8!, 87, and 85 are all spring biased in a clockwise direction and may be rocked singly or in combination through the same angle in a counterclockwise direction. The parts are so proportioned that, if lever 85 is rocked alone, cable 61 will be slackened to rock the carrier vertically to bring its +4. line of characters along the printing line. If lever 81 is rocked alone, cable 6? will be given slack so that its spring 65 will rock the carrier vertically to bring its 1 row to the printing line. If lever BI is rocked alone, cable 51 will be given sufiicient slack so that spring 66 will rock the carrier vertically to bring its 2 row to the printing line. Obviously, when the levers are rocked in combination the remaining rows will be selected. Thus,

To select row Va Levers rocked Horizontal positioning machines. Cable 12 (Figs. 1, 3, and 4) connects at its right end to an arm 9!] integral with a segment 9! from which a cable 92 extends around

wheels

93 and 94 and thence around a system of wheels corresponding to the system around which cable 61 extends. The components of this latter system are identified by the same numerals as corresponding parts for cable 6?, but distinguished by the letter a SUfilXed thereto.

In the same manner the levers am, am, and 850. are related to the

values

2, 1, and +4, respectively, and again rocking of the levers through the same angle singly or in combination will rock the carrier in a left or right direction to select an appropriate column of the carrier.

Thus,

To select column Ha Levers rocked Each of the levers 8i, 8?, 85, and its counterpart a, iila, and 85a has pivoted thereto at its lower extremity a pair of identical interposer hooks designated and 96 and a latching hock 97. These hooks are shown separately in Figs. 6, 6a, and 6b where it is seen that hooks 95 and 96 are slotted for sliding action on a pin 98 in the end of lever M (in example) while hook W l is not slotted. All the hooks are spring biased in a counterclockwise direction.

The six hooks 95 lie in a common plane and in the plane of a slide 558 which is mounted for horizontal reciprocation on posts Ml. Spring 99 serves to move it to the left while a cam 95C shifts it to the right. There is a tooth 95T for each hook 95 proportioned so that as shaft 34 rotates, slide 955 will reciprocate its teeth 95'1" below the hooks and, if a hook is rocked about its pin Q8, the hook will be engaged and therebetween the related lever B! (for example) will be forcibly rocked through a predetermined angle.

The six hooks 95 also lie in a common plane and in the plane of a slide this which is mounted in the same manner as slide 958 and is actuated by a earn 960 on shaft 534 which has the same configuration as cam 956 but is mounted on the shaft with a displacement, so that slides 95S and 36S are reciprocated oppositely. Slide 963 has a tooth SfiT for each hook at and, if one of these hooks is rocked, it will be engaged by a related tooth to rock the related lever counterclockwise.

The mechanism for rocking hooks e5, 96 comprises a lever 00 (Figs. 3 and '7) or which there is one provided for each of the six sets of hooks (see Fig. 1). This lever is pivoted at itl and is integral with armature m2 of a magnet s5 and is biased upwardly by a spring N33. The magnets 45 are selectively energized as explained in connection with the circuit of Fig. 9.

The sequence of operations is as follows. When a perforated column 42 of the record card 39 is beneath the sensing brushes 49, contacts 4'! close to complete circuits to magnets 45 in accordance with the coding of the character sensed and the corresponding levers H38 will be rocked to tilt the

related hooks

95, 96. Shortly thereafter, one or another of the slides 958, 8538 will move to the right, engage and carry with it the tilted hooks and connected levers. These, through the differential pulley wheel and cable connections to the carrier will thereupon rock the carrier se-' lectively in the appropriate direction to present the character corresponding to the combination of holes sensed to the printing line, and at such time while the advanced slide 958 or 96S is in its extreme position, cam 52 will trip the hammer 58 to throw the carrier against the platen and effect an impression on the tape.

It will be noted in Fig. 61) that as a hook 955 is advanced by a tooth in its related slide the free end of the hook slides beneath a stationary block Hi5 which looks the hook in engagement with tooth 965T and enables restoration of lever Hit shortly after slide 95S has begun to move.

When the advanced slide is in its extreme position and just before it begins to return, thecir cuit through the controlling card column will have been broken and the next column will be atthe sensing brushes. The alternate slide will be about to begin its advance and circuits will be completed to the magnets 55 in accordance with the combinational punching in this next card column to rock a new set of hooks accordingly for advance by the alternate slide, while those previously advanced return as the first slide moves to the left.

Provision is made so that, where a selected and advanced hook is again selected in response to the sensing of the next card column, such hook is not restored but is caused to remain in advanced position. For this purpose a bar :55 (Figs. 1, 3, and 6) is provided which is fixedly mounted on posts iii? and has teeth 38 lying in the plane ofmovement of the latching hooks @l. When any lever (such as Si) is rocked, it will advance its hook 9? to the position of Fig. 6 wherein a raised shoulder his will lie beneath lever iii. If now the same advanced lever is to be selected for the card column, 1. e., in the next /2 revolution of shaft 3'4, the related lever 188 will be actuated with hook 5? in the position of Fig. 6 and the hook will be tilted to engage adjacent tooth H38 in bar Kit. This latching action takes place while the second slide is advancing and is maintained by frictional engagement of the hook Q"? with tooth 38, since at such time lever 3! is spring biased clockwise and exerts a leftward pull on the hook. A slight undercutting of tooth 5? serves to assist in maintaining the latched relationship until the newly

advanced hook

95 or 5% picks up the lever gives it a slight overthrow sufficient to release the contact between i and M8.

The net efiect of this latching action is to obviate the return of the carrier to home posi" tion between successive printing operations and, where the same character is punched in successive columns, the carrier will be positioned upon the first sensing of the character and then latched in such position for repeated printing therefrom.

Obviously, where the next character lies in the same row or column, that row or column will have its selecting connections latched so that the carrier is simply repositioned along the previously selected row or column to the new character therein. To be more specific if (referring to Fig.

5) the letter Q is first selected, the carrier is moved up one row and to the left two columns. If the next character selected is the letter U, the

carrier remains in its upward position but shifts four columns to the right.

By providing alternately operating slides 95S and 96S, high speed of operation is attained since while one slide is effecting a selection the other is being restored and by providing the further latching mechanism restoration of levers required in the next selection is obviated and the extent of movement of the carrier is only that required to move directly from one character to the next Without an intervening homing action. Due to the high speed so obtainable, the card can be sensed in motion and the tape or entry receiving medium may also be in motion when the carrier is impelled against it.

While there have been shown and described and pointed out the fundamental novel features of the invention as applied to a preferred embodiment, 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:

1. In a printing apparatus, a type carrier having a surface forming part of a sphere and havinga plurality of characters arranged in aigreat circle on said surface, means for mounting'said carrier for oscillation on its spheric center, means normally biasing the carrier in one direction, restraining means therefor, a-device for releasing said restraining means" to enable the biasing means to rock the carrier in said one direction a fixed predetermined extent, a further device for rocking the carrier in the opposite direction against its biasing means a fixed extent less than said predetermined extent, and means for selectively rendering either or both of said devices effective, whereby the carrier will rock through a distance equal in extent and direction to either of said extents or to the resultant of the devices operated, respectively.

' 2. In a printing apparatus, a type carrier having a surface forming part of a sphere and having a plurality of characters arranged in a great circle on said surface, means for mounting said carrier for oscillation on its spheric center, means normally biasing the carrier in one direction, restraining means therefor, a device for releasing said restraining means to enable the biasing means to rock the carrier in said one direction a predetermined extent, a second device for rocking the carrier in the opposite direction against its biasing means one-half of said predetermined extent, a third device for rocking the carrier in the opposite direction against its biasing means one-quarter ofsaid predetermined extent, and means for selectively rendering all or any lesser number of said devices effective, whereby the carrier will rock through an extent equal in extent and direction to the resultant of the devices opera ed.

3. In a printing apparatus, a type carrier having a surface forming part of a sphere and having a. plurality of characters spaced thereon, means for mounting said carrier for oscillation on its spheric center, a printing platen, said surface being normally positioned with its center opposite the platen, means for rocking the carrier in one direction, a second means for rocking the carrier in a transverse direction, control mechanism for rendering both said rocking means jointly effective to bring a selected character into printing position, latching devices for each rocking means, and means for rendering either of said latching devices effective to latch the related rocking means to thereby hold the carrier in rocked position for the related direction.

4. In a cyclically operable printing apparatus, means for sensing a record for character designations arranged in columns, said means sensing a column for each cycle of operation, a. type carrier having a surface forming part of a sphere and having a plurality of characters spaced thereon, means for mounting said carrier for oscillation on its spheric center, a printing platen, an impression effecting device, selecting devices controlled by the sensing means for selecting a character for printing, means controlled by the selecting devices for rocking the carrier to present the selected character to the platen, and cyclically operable control mechanism comprising dual actuating members operative in alternate cycles to alternately rock the carrier and for causing said sensing, selecting, rocking and impression efiecting means to operate in the order named for each cycle of operation, and in which the order of operations is such that operation of the impression efiecting means in response to the sensing of one column is concurrent with the sensing of the designations in the next column.

5. In a printing apparatus, a type carrier having a surface forming part of a sphere and having a plurality of type elements spaced thereon, movable to pass through a printing position, and means for moving said carrier to present a selected element to the printing position, comprising a wire connected to the carrier at one end, a plurality of pulleys, an anchor, said wire extending from the carrier and looped partly around each pulley to said anchor, and means for selectively varying the positions of said pulleys toward or away from one another to thereby move the carrier an amount corresponding to the extent of movement of the pulleys and spring means acting on the carrier to keep the wire taut.

6. In a printing apparatus, a type carrier having a surface forming part of a sphere and having a plurality of type elements spaced thereon, movable to pass through a printing position, and means for moving said carrier to present a selected element to the printing position, comprising a wire connected to the carrier at one end, a pulley located to normally maintain a bend in the wire, an anchor, said wire extending from the carrier and partly around said pulley to said anchor, and means for moving the pulley away from the wire a predetermined extent to create a slack in the wire, and a spring on the carrier to take up the slack so produced to thereby move the carrier to present a selected element to said printing position.

7. In a printing apparatus, a type carrier, positioning mechanism for said carrier, including a pair of driven elements, both arranged to position the carrier, a pair of cyclically operable actuators, one for each driven element, operable in alternate cycles, so that as one advances, the other restores, means for engaging both said elements with their actuators during a given cycle, whereby the actuator advancing in such cycle will drive the related driven element to position the carrier, spring means for causing the advanced driven element to return with its actuator during the next cycle, and means effective to prevent said return if said elements are engaged with the actuators during the said next cycle, whereby the carrier will be retained in the position to which it was moved.

8. In a printing apparatus, a type carrier, mounted for movement through a plurality of equally spaced positions, an anchor, a wire connected between said carrier and anchor to normally hold the carrier in a home position, said carrier being spring biased against the wire to hold it taut, guides normally positioned to hold said Wire in a path of predetermined configuration, and means for selectively changing the posi tions of said guides and anchor to alter the path of the wire and thereby move the carrier to a selected one of its other positions.

, 9. The invention set forth in claim 8 in which one of the guides is positionable to move the carrier a distance of one space, another guide is positionable to move the carrier through four spaces, and the anchor is positionable to move the carrier through two spaces, said selective means b ing effective to change the positions of one or all uides and anchor to effect a cumulative movement of the carrier.

10. In a printing apparatus, a type carrier having a plurality of columns and rows of type elements thereon, a first operating wire connected to said carrier, means for drawing said wire to move the carrier for presentation of an element in a predetermined row, a second operating Wire connected to said carrier, means for drawing said second wire to move the carrier for presentation of an element in a predetermined column, and means for rendering both said drawing means concurrently effective to present the element related to said predetermined column and row, said drawing means comprising an anchor to which the Wire is connected, a pulley bearing against the wire at a point intermediate the carrier and anchor, and power operated means for causing the pulley to move against the Wire a predetermined extent.

HORACE S. BEATTIE.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 393,259 Perry Nov. 20, 1888 420,692 Miller Feb. 4, 1890 435,654 Perry Sept. 2, 1890 442,021 Davenport Dec. 2, 1890 446,719 Stover Feb. 17, 1891 723,567 White Mar. 24, 1903 939,965 Aronson Nov. 16, 1909 1,139,689 Lyon May 18, 1915 1,997,167 Bryce Apr. 9, 1935 2,036,024 Daly Mar. 31, 1936 2,076,717 Fuller Apr. 13, 1937 2,090,920 Stuivenberg Aug. 24, 1937 2,181,996 Knutson Dec. 5, 1939 2,381,862 Beattie Aug. 14, 1945 FOREIGN PATENTS Number Country Date 555,009 Germany July 19, 1932