US1847478A - Multigraphing attachment for printing presses - Google Patents

Description

March 1, 1932. F, GODDARD 1,847,478

MULTIGRAPHING ATTACHMENT FOR PRINTING PRESSES Filed June 17, 1930 2 S heetS+Sheet 1 I ll n h u u l| II II r L 9 7,1 TOR.

A TTORNEYS,

March 1, 1932. M, G D 1,847,478

MULTIGRAPHING ATTACHMENT FOR PRINTING PRESSE S Filed June 17, 1930 2 Sheets-Sheet 2 A; INVENTOR. BY

A TTORNEYS.

Patented Mar. 1, 1932 UNITED STATES ,VPIATENTJ ERANcIs IvI. eonnARn'or DENVER, COLORADO, Ass IeNO T uIoHN .IQSUTTON; or DENVER, COLORADO I j MULTIGRAPHIN'G ATTACHMENT FOR- rRINTING rREss s Application filed nine 17, 1939.

invention relates to printing presses. An important object of the invention is to provide means to imitate typewriting on an ordinary platen printing press. 7 Another object of the invention is to provide means on such a press whereby the heading may be printed as usual, and at the same time the body of the letter printed to imitate a typewritten letter.

A. further object is to provide a ribbon attachment, for printing imitation typewritten letters, that will utilize the ribbonover its entire width and avoid using it sections only. 7 A still further object of the invention is to provide simple and eifectivemeans for advancing and reversing a ribbon comprised in the invention, while the ribbon is away from the type. Other objects reside in providing practical meansfor carrying out the foregoing objects.

Novel details of construction and novel combinations and arrangements of parts'will appear in the course of the following scription. It is alsoto be understood that this specification only covers an embodiment of the present invention andthat changes may be made without departing from the scope and spirit of the invention.

In the drawings, like reference characters designate similar parts in the severalviews.

Figure 1 is a plan view of an embodiment of the present invention.

Figure 2 is an enlarged elevation'looking in the direction of the arrow A in Figure 1. Figure 3 is an enlarged section taken on the line 3-3 of Figure 1. Figure 4: is a section similar to FigureB, but showing the parts in different operative positions. Figure'5 is of Figure 2. I v Referring more specifically to the drawa section taken on the line 5 5 ings, the reference numeral 6 generally designates frame applied to a printing press, the platen of which is indicated in dotted lines at 7 in Figure 2. The position of type faces is indicated at 67 with relation to the platen and ribbon. i

One side 8 of the frame is parallel with de- I Serial No. 461,719.

an end of the platen. edges of the other threesides of the frame are out of parallelwith the adjacent edges and ends of the platen 7 Spools 9and 10 for a ribbon.:12 are mounted onshafts 13 and 14- supported in bearing brackets 15 and 16 on the outer edges of side members and 18 of the frame. Said'edgesare parallel with eachjother, andas stated are out: of parallel with the edges of the platen.

Therefore, the spools 9 and 10 but the ribbon travels obliquely across'the platen. .This arrangement 1 produces even wear across the width of the ribbon. If'the ribbon traveled parallel with the lines of type, there would be worn'sections and in between such sections the ribbon would be untouched as is the case with machines now in use. This feature is adaptableto numerous printing machines now known. -j 1 The gripper arms'used on platen-presses are moved inward toward each'other and bolts 19 fasten the frame 6 to the samecross bar (not shown) to whi'chthe gripper arms are-bolted. Strengthening ribs "20, shown in Figure 1, are approximatelyin the positions usually occupied by the gripper arms before they'are 'mov'ed inwardlj 3 The operating mechanism for the shafts 13 and 1450f the ribbon spools includes a counter shaft 21" extending the width of the frame and carrying right and left- hand worm gears 22 and 23 near its ends. gears 24 and 25 loosely mounted on thes'po ol shafts 13 and l l resjaectively. arefbetween head 26, keyed onsaid shafts, and friction rings 27. The rings 27 have integral bushings ,68 upon I'vhich the gears24-and 25 rotate and upon which the. heads 26. are mounted. i 7

A headed bushing 28 is provided for the portions ofthe shaft'sQliiand lethat'projectthrough side member 29 of the frame. Springs '30. and 31 coiled around the shafts 13 and 14' respectively abut against a collar 3201i the shaft and-a washer 33 that' is at the end of'the'bush'ngj28" and engaging one of the'flanges 34 of the bearing bracket 16; Y

The worm gear 22 is disposed betweenb'e'ai' A s shown, the outer I KAT-M,

ings and 36, and the worm 23 is between bearings 37 and 38.

A loosely mounted, elongated gear 39 is provided between a shoulder member 40 on the counter shaft 21 and a collar 41 keyed on the shaft, and; hasratchet teeth 42 atits end. The toner; 41. also hasratchet teeth 43 to engage the teeth 42 on the collar, A Se es 4. be ween. th. sh ulde 40 and gear39; urges the ratchetvtee-th of thecollar A bearing and the gear into engagement.

45 is provided adjacent. tothecollar.

spring-urged toggle is connected with the counter shaft 21 to hold onebathe-other 0f the Worms in engagement with its r-espectogglecomprisesa pivtivezspu gear i otedi arm. actuated! by. a. spring 47. A link- 48piito'tallyconnects the arm with a dog 49;mountedionjthejshaft between collars 50 that. are; fastened; on. the. counter shaft 21. Bearings. 45: and 51: limit; movement of the collarsfifls V A; lever.52 ,pi.voted. on ascrew 53, has at oneendesegmental te.eth.54 engaging the .gear

I 39. Theotherendjhasa. flange 55: disposed underthe; platen,

whereby: movement of. the :fnamorrelatiyesto the platen moves thelever after eaohimpressionof; the press. A; coil spring 58;;around;a-boss..59 on; the lever tends to returnthc everto-itsloriginal position each time; The springiisshooked around; a finger 60 on therfrflanoand'project through anopem ngs n .thelever, as..shown1at61;

Asstated;thespur,gears24,:andr25areloosely mounted on bushings 68.-on the shafts; 13

and; 4-. Howeve s each. gear carries. OP- posi cly d posed: pins: 2- di po ecl' t ab t g inst cros pi 63: Ea of: he. ro

passes; through; the. shaft, through the a hin fit and hreught h l he ds fi, keyi aidznaits nthe ha t e e d at Ma e n ing.,.6 .;aro 1nd he os Q ste d; o one of the ns-@Zmnt-he pu s an ncli he hae nd. s stened o. he ress pin. i' nr ag-.h eamari an n the p itien shown- 'in i ure.4,wherebythe. initial at-Whets t,-. e;a a a t h w m- I gages. it, .fdo es o t rotate the. shaft. In fact,

the gear may r ate, approximately one-.lialf eaolfi i'cia befei l he cross p nt? engages the pins, 62.:on .the gear again, to impart ro a -15C. iiiq ato hes i l 'lm he oneli tiqaot hein en n, h i on ravs a t 1i9rt bli ly. r ss the type and-is automatically reversed atthe ends by the nechanism described. 7 i

In applying the presentinvention to a printing press, theink 1 rollers ,of the press be partly out awayso that theywill .not

3; ink the. that.- is. inked by. the. ribbon .12.

.weven. lD,-. QmBe D DC S,- it @migh be. advi ab e-to nl l lh t the-lyre y. he. llers il-therm l: n hi i etterew yst an r es'e ea e hee bbq e r le snk: he ate The ribbon is advanced a slight bit between each impression of the printing press, through the intermediary of the flange 55 under the platen by the movement of the frame 6 away from the platen. The movement of the ribbon takesplace not only between impressions but also'when the. ribbon is away from the type. During the advancing movement of the ribbon, it is not dragged across the type, as is usual with ribbon printing apparatus, because the frame 6 moves away from the type faces between impressions, as shown in Figure 6.

Thelever teeth 54rotate the gear 39 a part of a revolution after each impression. When thelener is. released, the spring 58:returns the lever to;its, original; position. Rotation of thegear, is communicated'to the collar 41 and thereby tothe counter shaft 21- by means fa t e tcheta ce h finn fli h spring 44maintainsthese teetl in engagement. The counter;shaft2l operates the worms, whose movement is. impartedto the spools through the gears 24 and 25 and through shafts 13 and;14; The springs 30 and-3Lhold the friction rings 27, incontact with-the vheadsoofthe bushingsQ S. to resist rotation of the spools.

hisrresistan ce holds theribbon taut.

e springurged toggle holds one orthe other ofthe .wormsinengagementwith its respective spur gear, and moving one wormout ofengage nent andthe other into engagement isnopposedvby the spring47 on the toggle arm.

opposition, holdsnthe mechanisnrin an operat ve position during movement of. the ribbon.

The ribbon .isfastened to the goods byv any suitable or; conventional means, so that when the ribbon reachestheend, further rotation in thesame direction is. prevented.- Continued rotationof. the worms by continued operas tionof the press, will rotate the worm out of engagementiwithits spur. gear,- whereby to causeengagementqof the other worm withits spur ge ar, toreverse the movement of the hhe Toapreventthe tog le fron'rstopping at dead center, there is period during the reversing operation thatboth wormsare in ;engagement withtheir gea rs.; But the worms do iiot pull the ribbon in opposite directions, due to the free movement of the spur gears during a portion of their rotation. Both WQIIllS ttlBf n t in engagement long enough to rotate the shafts 13and14 in opposite directions V After the shaft is moved beyond dead center of the toggle, the spring 47" snaps one worm out of engagementand moves the other into a positionewhereby the pins 62 and 63 are in engagement. Thus the reversal of the direction of movement of the ribbon is automatic. y

The present invention has. been foun'd'to operate .very satisfactorilyin actual practice,

nd the printed product is a striking likeness f typewriting, while other parts of work are minted as usual, all in a single operation.

What I claim and desire to secure by Leters Patent is:

1. An attachment for printing presses, com-' )rising a frame, ribbon spools on the frame, lriving shafts for the spools, gears on the ;hafts, driving gear means arranged to engage either of the first mentioned gears, the driving gears being disposed in one position to simultaneously engage both of the firstmentioned gears and adapted by continued movement to move out of engagement with the one and into engagement with the other of the first-mentioned gears, at least one of the gears having a free movement on its shaft during the simultaneous engagement, a spring to return'the free moving gear to a redetermined position when disengaged from its respective driving gear, and spring means tending to hold the driving gears in engagement with the respective shaft gears.

2. An attachment for printing presses, comprising a frame, ribbon spools on the frame, driving shafts for the spools, gears loose on the shafts, abutments on the shafts and gears limiting relative movements of the gears and shafts, driving gears adapted to engage either or both of the first-mentioned gears, the abutments being arrange whereby the one or both of the gears rotate freely on the shaft during the simultaneous engagement, the driving gears being adapt-- ed to move out of engagement with one or shafts, and thereby move the ribbon, in opposite directions, said means including gears at least one of which has a limited free movement on its shaft and driving gears to rotate the first-mentioned gears, the driving gears being in engagement with both of the first-mentioned gears during a period in the reversing operation and said free movement preventing the spools from pulling the ribbon simultaneously in the opposite directions.

In testimony whereof I hereunto afiix my signature.

' FRANCIS M. GODDARD.

the other of the first noted gears by continued rotation.

3. An attachment for printing presses, comprising a frame, ribbon spools on the frame, driving shafts for the spools, gears having limited movements on the shafts, driving gears for the first-mentioned gears, and springs to return the first-mentioned gears to predetermined positions after being disengaged from their respective driving gears.

4. An attachment for printing presses, comprising a frame, ribbon spools on the frame, driving shafts for the spools, gears on the shafts, driving gear means arrange to engage either of the first-mentioned gears, the driving gears being disposed in one position to simultaneously engage both of the first-mentioned gears and adapted by continued movement to move out of engagement with the one and into engagement with the other of the first-mentioned gears, at least one of the gears having a free movement on its shaft vduring the simultaneous engagement, and spring means tending to hold the driving gears in engagement with the respective shaft gears.

5. A printing press comprising rotary shafts, spools on the shafts, a ribbon on the spools, and reversible means to rotate the

Images