US2132998A

US2132998A - Transfer apparatus for printing presses

Info

Publication number: US2132998A
Application number: US195864A
Authority: US
Inventors: Paul H Schulz
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-03-14
Filing date: 1938-03-14
Publication date: 1938-10-11
Anticipated expiration: 1955-10-11

Description

Oct. Il, 1938. P. H. SCHULZ TRANSFER APPARATUS Eon PRINTING PREssEs 2 Sheets-Sheet 1 Filed March 14, 1938 Suunto:

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*414 Gttomeg oct. 11, 1938. y P H SCHULZ 2,132,998

TRANSFER APPARATUS FORPRINTING PRESSES Filed Ilarch 14, 1938 2 Sheets-Sheet 2 l 1 I m :n 5 S i 1 1U 'c/ I \-x L 1 6,- v [L l i m l x ""1 a l It a, l IL l if l l I Il.' l Y I Y." Y Y o :l -I Snvmtor' SBN 1 )Umax/8W '2 wa/www ul/Ottersum Patented ocr. 11, 193e PATENT yOFFICE TBNSFER APPARATUS FOB. PRINTING PRESSES rain n. schulz, Moline, n1.

Application March 14,

Claims.

My invention has reference to a transfer apparatus for printing presses, and has for its chief purpose to increase the eiiiciency and utility of such devices. It is more specially adapted for use 5 with the vertical type of presses, and is provided with mechanical devices of an automatic character which will prevent the sheets of paper which are being fed into the press from lagging or getting out of place. By its use the sheets of paper will be brought successively into hair-line register, at any speed of the press, and with exact reproduction of the printed matter in case of re-printing, as in the use of extra colors.

Another purpose of the invention is to have the body portion, or table of the instrument and mechanical features thereof of such a character that they can be readily attached to presses already in use, and substituted for similar devices With vwhich such presses may be equipped.

By the use ofthe vinvention the sheets of paper which are delivered thereto are brought into accurate and uniform position for engagement by the gripping devices of the press, and are prevented from getting out of place by fingers or clips which haveya yieldable engagement with the edges of the sheets. 'This insures an accurate printing of the sheets, and not only saves on the material, but in the time which is frequently the stoppage of the machine therefor.

vision of means for adjustment of some of the parts thereof, so as to adapt the same to sheets of paper of different sizes. These parts are also susceptible to a reversal in position, so as to be operable with sheets or strips of a minimum size. The actuating clips are also capable of adjustment on their support, and can be quickly removed therefrom and replaced.

Another purpose of the invention is the-provision of means for holding sheets of paper in place that have a tendency to curl, and compel given to the removal of spoiled sheets, and in Another purpose ofthe invention is the pro-v Y 1938, Serial No. 195,864

Fig. 2 is anv enlarged detail of one of the spring clips 58.

Fig. 3 is a fragmentary plan viewfthereof.

The reference number 6 indicates` a portion of a frame of a printing press of vertical type, from which project brackets 1, (only one shown) in, which is journalled a shaft 8, upon which is mounted a cylinder 9, upon which the sheets of paper are held during the printing operation. Projected from the brackets 1 are lugs I0, pivotally connected with which are arms I I, as at a, supporting a plate I1, upon which is mounted a cross-head I2. The rear tapered edge of the cross-head I2 is in proximity to a series of gripping devices I3, carried by the cylinder 9. Supported in the upper part of the frame 6 is a rock-shaft I4, from which a pair of arms I5 is projected outwardly for the support of a rod I6, in proximity to the cross-head I2. The parts hereinbefore described are common to machines of the class named.

The plate I1 is projected outwardly to support the inner side of a table I8, secured to said plate by bolts I9. The table is divided into two parts enclosed by rims 20, within which are pads 2|, preferably formed of material which will be a non-conductor of electricity. Centrally of the table I8 is a channel 23, in which is slidable a bar 24, secured to which is a rod 25. Beneath the table I8 is a bracket 25, in the lower part of which is pivoted an arm 2l, provided at its lower end with a sleeve 28, supporting a pin 29, which can be held in adjusted positions therein by a set-screw 30. One end of the pin 29 carries a roller 3|, engageable with a cam 32, supported by an arm 33 and mounting 34, attachable to a post 35 forming part of the mechanism for supporting asupply of paper stock, as indicated fragmentarily at 35. The sheets of paper in the stock are fed one at a time in the direction of the table I8 by a feed-arm mechanism shown at I1 and mechanism for actuating the same, not shown in the drawings.

At the lower end of the arm 21 is a lug 42, to which is pivotally connected one end of a bar 44, the other end of which is similarly connected with an arm attached to the slide-bar 24 and having movement in a slot 46 in the table Il, and held from release by a washer 41 and pin -in the arm. Near the othernend of the bar 24 is fixed thereto a lug 48, havingplay in a slot 49, and held in place by a washer 50 and pin. The arm 45 is connected by a coiled spring 5l with an ear 52 on the lower face vof table I8, which spring tends to-hold the 'arm l45 and connected parts at the outer end of their movement, against the action of the cam.

Supported on the table I8 is a cross-plate 53, secured to a sleeve 64 held slidably on the rod 25, by means of a screw 65, the end of which may be engaged with said rod, to hold the parts in adjusted positionse On opposite ends of the plate 53 are small tracks 56, with beveled edges, forming guides for dogs 51, supporting clips or joggers 58, by means of pins 59, siidable in said dogs. Springs 66 are interposed between the dogs and clips by means of which said clips can be held yieldably in active positions. Said plates are provided with plates 6I, upon which the rear edges of the paper sheets are deposited, and are projected upwardly into curved anges 62, with an overhang at 63 interfering with the movenient of a sheet upwardly when in engagement with the clip. Such a sheet of peper is shown at 36 in Fig. 1, after being received from the pile of sheets before mentioned,

In the operation of the press the cylinder 9 is given a vertical reciprocating movement, and at the approach to the upper end of such movement the shaft I4 is automatically rocked by devices not shown in the drawings, elevating the rods I6 as shown in broken lines in Fig. 1. One ef the sheets of paper to be printed, shown at 36, is then fed onto the table I6, with the inner edge of the paper resting against the gripping devices I3. The opposite edge of the paper rests upon the plates 6I of the clips, and as the mechanism starts to move downwardly the rods 65 close down on the paper, holding the same lightly from movement-i As the downward movement continues, the roller 3| comes in contact with the cam 32, meving the plate 53 and causing the clips 58 to yieldably engage the edge of the paper, and bring it into true position for engagement by the gripping devices, and for printing on the cylinder. 'Ihe jcgging action of the clips serves to position each sheet of paper in current position, se that the sheets will have a hairline registry, and so that the printing on all of the sheets wlli be correct and uniform. An:-7 irregularities in the sheets or dierences in widths or other dimensions thereof will be taken care of, and equalized by the action of the clips.

The clips are not only capable of being adjusted along the tracks 56, but the position of the cross-plate 53 can be changed with vreference to the grippers i3. The plates 53 can also be reversed in psition, bringing the edge with the clips on nearer to the gripping devices, and for this use the positions of the clips would also be reversed. This makes it possible te use the device with narrower sheets of paper, or with card-board, such as postcards.

' Trouble is sometimes encountered with the stock, on account of the sheets therein having a tendency to curl, and get out of place. This is overcome hy means of a pair of rods 65, having loops 66 encircling the shaft I4, and held to the rod I6 by wire hooks 61, between which and the loops 66 are coiled springs 68. The rods 65 are brought downwardly upon a sheet of paper on the table I8, indicated at 36, and holds the same in a flat condition while the sheet is being conveyed to the cylinder. As the rod I6 is raised, to permit insertion of another sheet.

y the rods 65 are raised cut of the way, as shown in broken lines in Fig. 1.

What I claim, and desire to secure, is:

1. A device of the class described, comprising a table adapted for attachmentl to the cylinder frame of a printing press, to reciprocate therewith, means 'for feeding successive sheets of paper to said table, with one edge of each of said sheets in engagement with the gripping devices ef a press, jogging devices on said tabie for uniform arrangement of said sheets, means for actuating said jogging devices, and means for preventing the sheets from curling in their passage over the table.

2. A device of the class described, comprising a table, adapted for attachment to the cylinder frame of a printing press, to reciprocate therewith, and capable of receiving sheets of paper in succession, from a supply thereof, means on said table for jogging the sheets of paper into proper position for engagement by the gripping devices of a press, means for holding said sheets from curling while on the table, and means for automatically moving said last-named means out of the way when a sheet of paper is to be fed to the table.

3. In a device of the class described, a table adapted for attachment to the cylinder frame of a printing press, to reciprocate therewith, and provided with a central channel, a slidebar in said channel, a cross-plate connected with said slide-bar, and provided with yieldably mounted jogging members, a rock-arm supported beneath said table and operatively connected with said slide-bar, and cam mounted in proximity to said roch-arm to automatically actuate said rock-arm Iand slide bar upon the downward movement of the table.

4. In a device of the class described, a table adapted for attachment to the cylinder frame of a. printing press, to reciprocate therewith, and provided with a central channel, a bar held slidably in said channei and provided with a rod support, a jogging mechanism slidable on said table, and connected with said rod, for adjustment thereon, an arm rockingly supported beneath said table, a cam supported in proximity to said arm, for the action thereof, connections between said arm and said slide-har, and means for returning said slide-bar tc its original position after being actuated.

5. A device of the class described, comprising a table, adapted to receive a succession of sheets of paper and deliver them to a printing press mechanism, and previded with a central channel, a slide-bar in said channel and support connected therewith, a cross-plate on said table, connected with said support, and reversible in position, a plurality of jogging devices connected with said cross-plate, and reversible in position thereon, and means for actuating seid slide-bar, to operate said jogging devices.

PAUL H. SCHULZ.