US2207922A - Duplicating means - Google Patents

Description

July 16, 1940. H. JAGGER DUPLI CATING MEANS Filed July l5. 1959 5 Sheets-Sheet l INVENTOR, Haben? T7@ agef" BY (L4/Jam.; c 1f-91nd@ ATTORNEYS.

July 16, 1940.

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July 16, 1940. v H. JAGGER v 2,207,922

DUPLICATING MEANS Filed July l5, 1939 3 Sheets-Sheetl 5 ff L fh-J INVENTO.

Kober?? rfa ef BY d. aww, @wam ATTORNEYS.

Patented July 1.6, 1940 PATENTv orrice g DUPLICATING MEANS Hubert Jagger, Maywood, Ill., assignor to Ditto, Incorporated, Chicago, Ill., a corporation of fest Virginia Application July 15, 1939, Serial No. 284,597

13 claims.

This invention relates to duplicating machines of the flat bed hectograph type in which a carriage is movable longitudinally of a duplicating pad mounted on the bed of the machine so as to carry a copy sheet or card into the desired position with respect to the duplicating pad and to press it into effective engagement with the pad so as to print a line of copy subject matter on the sheet. Itis the object of the invention to mk provide an improved formand arrangement of means for presenting a card into operative position on the duplicating pad arranged so that the card is introduced into printing position and pressed againsty the' pad and then stripped from the pad without undue deformation of the card from its normal straight condition.

In the arrangement shown in the drawings, the card moves along a tray which is pivotally mounted on a horizontal axis and is brought into m. adjusted position thereon by contact with a margin bar device. A platen roller then moves downwardly into engagement with the card so as to press it against the edge of the tray which moves downwardly ahead of the roller against the aetion of supporting spring means, this being eifected without any substantial bending of the card from its normal straight condition. After the card has been gripped between the roller and the tray, the margin bar means is withdrawn and the card is pressed n rrnly against the duplieating pad by the platen roller, the tray being moved downwardly to a slight extent at the end of the downward stroke of the roller so as to relieve the pressure between the tray and the roller. The arrangement is such that upon the upward movement of the tray and the roller the card is pulled upwardly by said means so as to strip it from the duplicating pad ready for removal from the machine. y

It is another object of this invention to improve duplicating machines of this type in sundry details hereinafter pointed out. means by which the several objects have been accomplished' are illustrated in the drawings, in

which- Fig. l is a side view of a complete machine embodying the invention, such machine being supported upon a cabinet;

Fig. 2 is a top plan view of the machine shown in Fig. 1;

Fig. 3 is a vertical cross sectional view taken substantially at the line 3 3 of Fig. 2;

Figs. 4 and 5 are substantially the same as Fig. 3 .but showing changed positions of the parts;

and

The preferredv Fig, 6 is a perspective view` of the pivotally mounted tray upon which the copy sheet is introduced into the machine.

Referring now to the several figures of the drawings, in which corresponding parts are indicated by the same reference characters, IE! indicates a frame of any approved type provided With a bed plate II extending thereacross having a gelatin duplicating band l2 secured thereon in any suitable manner. As is clearly shown in m Fig. 1, a carriage I3 is mounted upon the frame I0 soas to be movable longitudinally thereof, the carriage I3 in the arrangement shown comprising a mounting bar I4 in the form of a yoke, the cross bar portion of which is slidable along slots 15 I 5 provided by the framework IB at opposite sides of the machine. v t

In the arrangement shown, a platen roller i6 of any approved type is provided for pressing a copy sheet into engagement with the duplicat- 20 ing pad I2. In the arrangement shown, the platen roller I6 is rotatably mounted between two arms II which are xedly mounted upon a shaft I8 rotatably mounted between the end walls of the carriage I3. A lever or arm I9 is 25 iixedly mounted on the shaft I8 at any suitable point along said shaft for giving the shaft I8 a rocking movement for carrying the arm Il and the platen roller I6 toward and from the duplicating pad I2.. Each of the arms Il in the ar- 30- rangement shown is provided with a downwardly extending lug 20 directly below the shaft I8 in which a pin 2| is mounted, each of such pins being connected by a coiled spring 2l with a pin 2.2 extending from the end Wall of the carriage for holding the arm or lever I9 swung normally to the limit of its movement in counterclockwise direction as shown in Figs. 1 and 3 so as to hold the platen roller IE in its uppermost position.

At the face of the carriage at the right as shown in Fig. 5, a shaft 23 is mounted' pivotally supporting a tray 24 in the form of a flat plate which extends normally into position underneath the` platen roller I6, as shown in Fig. 3. Coiled springs 25 are provided connecting the plate or tray 24 with the framework above the tray, serving normally to hold the tray in its raised position, as shown in said Fig. 3. For limiting the upward movement of the tray 2li, stop means 50 in the form of a horizontally disposed plate 26 is provided directly above the tray 24 in such position as to cause lugs 2l carried by the tray 2li to engage for holding the tray in downwardly spaoed relation to the plate so as to permit free 55;

movement of a sheet of paper between the tray 24 and the plate 26. In the arrangement shown, the plate 26 is provided with a series of sight openings 28 therealong for enabling the operator better to observe the copy sheet in position upon the tray 24.

Adjacent to the tray 24, a stationary table or tray 29 is provided adapted to cooperate with the tray 24 for holding a card or other copy sheet 30 in position as shown in Figs. 3, 4 and 5. In the arrangement shown, a margin bar device 3i is provided upon the stationary tray 29 (see Fig. 2), such margin bar device comprising a vertically disposed plate portion 32 against which one edge of the card or other copy sheet 3U is adapted to be positioned. The device 3| is held adjustably in position by means of a spring 33, as is best shown in Fig. 2.

Margin bar means is provided adjacent to the platen roller I6 for controlling the position of a card or other copy sheet upon the tray members 24 and 23. In the arrangement shown, such margin bar means comprises an angle bar 34 formed of sheet metal extending across between two arms 35 pivotally mounted on the carriage I3. Above the arms 35, there are mounted plungers 36 which are pressed downwardly by coiled springs 31, as is clearly shown in Fig. 3, the arrangement being such that the plungers 36 by engagement with the upper ends of the arms 35 serve normally to hold the arms swung toward the roller I6 for supporting the margin bar device 3 in position underneath the roller and serve alternatively when the arms are swung away lfrom the roller as shown in Fig. 5 to apply pressure for holding the arms and the margin bar device in such changed position.

For moving the arms 35 and the margin bar device 34 toward the left from the position as shown in Fig. 3 to the position as shown in Fig. 5 when the lever I9 is given a movement in clockwise direction in said figure, links 38 are provided connected at one end with the pins 2| and connected at their opposite ends with the arms 35. As is clearly shown in Fig. 5, the connection between the links 38 and the arms 35 is effected by means of slots 39 in the links engaging pins 40 carried by the arms 35 so that there is a lost motion connection between the parts.

With the parts in the position as shown in Fig. 3, a card or other copy sheet 30 is slid into position upon the tray 24 until its edge is brought into contact with the margin bar device 34 for accurately positioning the copy sheet upon the tray. The arm or lever I9 is then swung in clockwise direction in Fig. 3 for carrying the platen roller I6 downwardly into engagement with the copy sheet 33 so as to press it rmly against the edge of the tray 24. As the arm I9 is thereafter moved clockwise the tray 24 and the card 30 are moved downwardly together by the platen roller I6until the copy sheet 30 is brought into impression relationship with the duplicating pad I2. Inasmuch as the roller I6 is free to rotate with respect to the arms I'I, the card 30 is held strongly in position with respect to the tray 24 without any substantial tendency for the card to slip either with respect to the tray or with respect to the roller. When the arms I1 reach substantially their lowermost position as shown in Fig. 5, the arms are brought into engagement with lugs 4I formed on the free edge of the tray 24 at opposite ends thereof, serving to move the tray downwardly to a very slight extent with respect to the roller I6 for relieving ment of the roller I6 and the tray 24 together an upward pull is exerted on the card or other copy sheet 30 by the tray and the roller for stripping the copy sheet from the duplicating pad.

By the use of this improved construction in which the supporting means for the copy sheet is movable downwardly with the platen roller, the copy sheet is protected against any undue deformation, being kept in substantially its normal flat condition without abrupt bends at any point.V In cases where the copy sheets are in the form of stiff cards, this feature is of very substantial importance in enabling the cards to be kep-t in good condition.

While the form and arrangement as shown and described are preferred, it is to be understood that the invention is not to be limited to such form and arrangement except so far as the claims may be so limited, it being understood that changes might well be made in the construction illustrated without departing from the spirit of the invention.

I claim:

1. In a flat bed duplicating machine of the hectograph type, the combination of a frame comprising a bed plate, means for holding a duplicating pad in position on said bed, a carriage movable along said bed, a member movable vertically on said carriage toward and fromsaid bed, means for directing a copy sheet into position above said vertically movable member,

yielding means adapted normally to move said` vertically movable member in the direction away from the bed, and a platen roller movable vertically on said carriage adapted upon a downward stroke to press a copy sheet into engagement with said vertically movable member and to move the copy sheet and the vertically movable member together downwardly for bringing the copy sheet into impression relationship with said duplicating pad.

2. In a flat bed duplicating machine of the hectograph type, the combination of a frame.

comprising a bed plate, means for holding a duplicating pad in position on said bed, a carriage movable along said bed, a member in the form of a plate extending substantially horizontally on said carriage and movable vertically` thereon, means for directing a copy sheet into position above said vertically movable member,

yielding means adapted normally to press said 3. In a flat bed duplicating machine of thehectograph type, the combination of a frame comprising a bed plate, means for holding a duplicating pad in position on said bed, a carriage movable along said bed, a tray pivotally mounted on a horizontal transverse axis on said carriage adapted to receivea copy sheet in position thereon above the duplicating pad, yielding means adapted normally to hold said tray inl raisedposition, and a platen roller movable verticallyA onsaid carriage adapted-upon `a downward stroke to press said 4copy sheet against the edge of the tray and to move .the copy sheet and the tray downwardly-together for bridging the copy sheet into pressure relationship with said duplicating pad. l i

4. In a flat bed duplicating machine of the hectograph type, the combination of a frame comprising a bed plate, means'for holding a duplicating pad in position on said bed, a carriage movable along said bed, a member movable vertically on said carriage toward and from said bed, means for directing a copy sheet into position above said vertically movable member, yielding means adapted'v normally to move-said veri tically movable member in the direction away from the bed, and a platen roller movable vertically on said carriage adapted upon a downward stroke to press a copy sheetl into engagement with said vertically movable member and to move the copy sheet and the vertically movable member downwardly together for bringing the copy sheet into impression relationship with said duplicating pad and adaptedupon the succeeding upward stroke to cooperate withlsaid vertically movable member for applying an upward pull on said copy'sheet for stripping it from the duplicating pad. y

5. In a flat bed duplicating machine vof thel 35 hectograph type. the combination oi a frame comprising a bed plate. means for holding a duplicating pad in position on said bed,l a carri'age movable along said bed, a tray pivotally mounted on a horizontal'transverse agis on said carriage adapted toreceive a copy sheet in position thereon above the duplicating pad, yielding means adapted normally toyhold said tray in raised position, and a platen roller -movablevertically on said carriage adaptedy upon a downward stroke to press said copy sheet Aagainst the edge of the tray and to move the `copy sheet and the tray downwardly together forbringing the copy sheet, into pressure relationship with said duplicating pad and adapted upon the next succeeding upward stroke to cooperate with said tray for applying an upward pull on said copy sheet for stripping the sheet from the duplicatine pad,

6. In a flat bed duplicatingv machine of the hectograph type, the combination of a frame comprising a bed plate, means `for holding a duplicating pad in positionon said bed, a carriage movable along said bed, a member movable vertically on said carriage toward and from said bed, means for directing a copy sheet into position above said vertically movable member, yielding means adapted normally to move said vertically movable member in the direction away from the bed. a platen roller movable vertically on said carriage adapted upon a downward stroke to' press a copy sheet into engagement with said vertically movable member and to move the copy sheet and the vertically movable member downwardly together for bringing the copy sheet into impression relationship with saidl duplicating pad, and means for giving said platen roller reciprocatory movements vertically adapted when said roller reaches its lowermost position to hold said vertically movable member out of engagement with said roller.

'7. In a nat bed duplicating machine of the hectograph type, the, combinationoi a` frame comprising a bed plate, means' for holding a duplicating padin position on said bed, a carriage movable along said bed',` a tray pivotally mounted on a horizontal transverse axis on said carriage adapted to receive a copy sheet in position thereon above the duplicating pad, yielding means adapted normally to hold said tray in raised position, two arms pivotally mounted on' said carriage-sol as to extend toward said tray, a platen roller rotatably mounted between said arms so as to be movable vertically adapted upon a downward stroke topress a copy sheet inposition onsa'id tray against the edge of the tray and to move the copy sheet and the tray down,- wardly together for bringing the copy sheet into pressure relationship with said duplicating pad, means for swinging lsaid arms vertically, and means on said tray adapted by engagement with said arms at about the time when `said roller reaches its lowermost position to move the. tray downwardly to a slight extent for' relieving the l pressure of the tray against the roller.

'8. In a 'ilat bed duplicating machine of the hectograph type, the combination' of a'vframe comprising a bed plate, means for holding a duplicating pad in position on said, bed, a carriage movable alo-ng said bed, a tray pivotally mounted on a horizontal transverse axis on said carriage adapted `to receive a copy sheet in position thereon above the duplicating'fp'ad, yielding f means adapted normally to hold said trayl in raised position, a plate in substantially horizon-v tal position above said tray, means for limiting the upward movement of the tray so as to hold it in spaced relation to said plate for permitting a copy sheet to be slid into position on the tray,

- and a platen roller movable vertically on said carriage adapted uponal downward stro-ke to press said copy sheet against the edge'of the tray and to move the copy sheet and the tray downwardly together` for bringing the copy sheet into `pres-y riage movable along said bed, a memberrnovable vertically on said Acarriage toward and from said bed, means for directing a copy sheet into posi-v tion abovelsaid vertically movable member, yielding means adapted normally to move said vertically movable member in the direction awayl from the bed, a margin bary device adapted normally to engage a copy sheet for positioning the sheet on said vertically movable member, a platenv roller movable vertically on said carriage adapted upon a downward stroke to vpress a copy`r sheet into engagement with said vertically movable member and'to move the copy sheet and the vertically movable member downwardly together for bringing the copy sheet into impression relationship with said duplicating pad, and means Cil movable member in the direction away fromthe bed, a margin bar device adapted normally toengage a copy sheet for positioning the sheet on said vertically movable member, a platen roller movable vertically on said carriage adapted. upon a downward stroke to press a copy sheet into engagement with said vertically movable member and to move the copy sheet and the vertically movable member downwardly together for bringing the copy sheet into impression relationship with said duplicating pad, means adapted upon a downward stroke of said platen roller to give said margin bar device a movement away from said roller, and means comprising a spring adapted when the margin bar device is in operative position to apply pressure for holding said margin bar device in such operative position and adapted when the margin bar device is moved out of operative position to apply pressure for holding it in its changed inoperative positio-n.

11. In a flat bed duplicating machine of the hectograph type, the combination of a frame comprising a bed plate, means for holding a duplicating pad in position von said bed, a carriage movable along said bed, a member movable vertically on said carriage toward andV from said bed, means for directing a copy sheet into position above said' vertically movable member, yielding means adapted normally to move said vertically movable miember in the direction away from the bed, arms pivotally mounted on the carriage at opposite ends thereof so as to swing forwardly and backwardly on the carriage, a margin bar device mounted on said arms a short distance above the duplicating pad, a platen roller mov- ,able vertically on said carriage adapted upon a and to move the copy sheet and the vertically movable member downwardly together for bringing the copy sheet-into impression relationship with said duplicating pad, spring means acting upon the arms upon which said margin bar device is mounted adapted when the margin bar device is swung toward the platen roller to apply pressure for holding the margin bar device in such position and adapted when the margin bar device is swung away from the platen roller to apply pressure for holding it in such changed position, and means adapted upon a downward stroke oi said platen roller to swing lsaid arms and said margin bar device away from said roller.

12. In a flat bed` duplicating machine of the hectograph type, the combination of a frame comprising a bed plate, means for holding a duplicating pad in position on said bed, a carriage movable along said bed, a member movable vertically on said carriage toward and from said bed, means for directing a copy sheet into position above said vertically movable member, yielding with said duplicating pad, two coiled springs .15 v

mounted on said carriage directly above said arms adapted by pressure on the ends of said arms to hold the arms yield-ingly in'either their operative position swung toward theplaten` roller or. in their inoperative position swung away from the platen roller, and means adapted upon the downward stroke of said platen roller to give said margin bar device a movement away from said roller.

13. In a flat bed duplicating machine ofv the.

hectograph type, the combination of a frame comprising a bed plate, means for holding a duplicating pad in position onl said bed, a carriagel movable along said bed, a member movable vertically on said carriage toward and from said bed, means for directing a copy sheet into position above said vertically vmovable member, yielding means adapted normally to move said vertically movable member in the direction away from` the bed, arms pivotally mounted on the carriage at opposite ends thereof so as to swing' forwardly and backwardly on the carriage, a margin bar device mounted on said arms a short distance above the duplicating pad, a platen roller movable vertically on said carriage adapted upona downward stroke to press a copy sheet into engagement with said vertically movable member and to move the copy sheet and the vertically movable member downwardly together for bringing the copy sheet into impression relationship with said duplicating pad, twok coiled springs mounted on said carriage directly above said arms adapted by pressure on the ends of said arms to hold the arms yieldingly in either their operative position swung toward the platen roller or in their inoperative position swung away from the platen roller, a lever pivotally mounted on said carriage adapted upon a stroke in one direc-- tion to move said platen roller downwardly toward the duplicating pad, and links pivotally connected with said lever and having a lost motion connection with said arms adapted when thev roller is moved downwardly to swing said arms. and said margin bar device away from the roller..

HUBERT JAofGER..

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