US2229017A - Printing press and the like - Google Patents

Description

Jan. 14, 1941. L Q. PRESBY PRINTING PRESS Ami) THE LIKE 2 Sheets-Sheet l 9 1O 9 \b m 1 H J m n F Q by N 5 \m .IHHHHII l l In] m mN mm \I mm k L. Q. PRESBY- $229,017

PRINTING PRESS AND THE LIKE Filed July 27, 1939 2 Shazets-Sheet 2 H 3 4 67 O z I i \[85 51 L X 79 j;

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atentecl Jan. 14, 1941 UNITED STATES PRINTING PRESS AND THE LIKE Leroy Q.

Presby, Mclrose, Mass, assignor to American Stay Company, East Boston, Mass, a corporation of Massachusetts Application July 27, 1939, Serial No. 286,827

2 Claims.

My invention relates to web treating apparatus, particularly but not exclusively to printing presses.

The invention has among its objects the provision of apparatus having operating means for progressively acting upon a lengthwise fed web, and means for causing relative movement between the web and operating means for placing the web in and out of presented relation to the operating means. The invention however will be best understood from the following description when read in the light of the accompanying drawings, the scope of the invention being more particularly pointed out in the appended claims.

In the drawings:

Fig. 1 is a front elevation of a printing press according to the invention, with parts omitted;

Fig. 2 is a side elevation of the printing press according to Fig. 1, as viewed from the left, with parts omitted;

Fig. 3 is a section on the line 3-3 of Fig. 1 showing parts according to Fig. 2 in a difierent operative position, and with parts omitted;

Fig. 4 is a section on the line 1-4 of Fig. 1, with parts omitted;

Fig. 5 is a section on the line 55 of Fig. 2, with parts omitted and parts broken away; and

Fig. 6 is a section on the line 6-6 of Fig. 2, with parts omitted.

The invention is particularly applicable to printing presses of the 'type shown in applicants Patent 2,107,647, February 8, 1938, in which a length of web is led from a roll of web through a printing couple, or through a plurality of printing 4 couples in series, to a power driven rewind reel, the driving connections to the latter being interruppted simultaneously with the interruption of impression in the printing couple or couples.

Specifically the printing couple and impression establishing and releasing mechanism illustrated are those shown in applicant's co-pending application Serial No. 209,284, filed May 21, 1938. In the present application the details of the mechanism shown in said patent and co-pending application will be described only with such particularity as is necessary for an understanding of the present invention.

As illustrated herein, the web W passes between the cooperating pressure rolls 1 and 3. These rolls may constitute the squeeze rolls or an immersion.

l and 3 passes over a hot roll 5 for operating upon the web to dry the ink or coating material applied to it. After passing over the hot roll the web is guided to the rewind reel (not shown). When the web is passed in series through a plurality of rolls 5 l and 3 as, for example, would be the case in a multi-color press of the type shown by the above mentioned patent, the apparatus shown in the application drawings may be considered as the I lastprinting couple of the series. Each printing 10 or coating couple may have a hot roll 5 for drying the material applied by it to the web.

As shown, the machine comprises a pair of standards 1 rigidly connected at their upper portions by a transverse girder 9. 'On each standard is mounted a bearing ii for rotatably supporting the end portions of the shaft. I3 of the roll l, which shaft at one end is shown as provided with a driving gear l5.

The mu 3, as illustrated, is rotatably mounted on a non-rotating shaft ll, suitable collars IE on the shaft restraining the roll against movement longitudinally thereof. As shown, this shaft at each end portion is fixedly carried at the end of a swinging arm 21, the opposite end of 2 each arm being pivoted on a pin 23 rigidly carried by the adjacent standard I.

As shown, above the arms 2! is a rock shaft 25, opposite end portions of which are journalled in the standards i, and further jonrnalled in lugs 21 carried by the girder 9. Carried by the rock shaft so as to rotate therewith are a pair of spaced arms 29. To the end portions of each arm 29 is pivotally connected the upper end of a link 3!, a single pin 33 extending from one arm 29 to the other to provide the pivotal connection. At their lower ends the two links 3i are pivotally connected by a pin to a block 31. Also rotatably carried by the rock shaft 25 between the arms 29 is a block 39, and slidably extending through a 40 perforation 4| (Fig. 4) in this block is a sleeve 43 rigidly connected at its lower end to the block 31, while at its upper end it carries a head 45 serving as an abutment for a compression spring 41, the block 39 serving as an abutment for the lower end 45 of this compression spring. Extending through the sleeve 43 is a screw-threaded rod 49 carrying upper and lower nuts 5| respectively bearing against the head 45 and block 31 so that the screw may be adjusted vertically relative to the sleeve 43. 50 At its lower end the screw-threaded rod 43 carries a head 53 connected to a bar 55, which bar extends between and is connected at opposite end portions to the two swinging arms 2|.

By reason or the construction above described 55 when the parts are in the position shown by Figs. 1, 2 and 4 the arms 29 and links 8! serve as toggle-links" to exert pressure between the rolls 3 and I, the .pin 33 under these conditions resting against the sleeve 43 as a stop owing to the fact that the toggle" is slightly beyond dead center position, as will be clear from Fig. l. By rotating the rock shaft in the direction of the arrow on the gear 51 (Fig. 2) the pin 33 (Fig. 4) will be moved to the right past its dead center position, whereupon further rotation of the shaft aided by the compression spring 47 will move with a pinion 59 journalled on the adjacent standard 7, which gear wheel may be rotated by means of a hand lever 6|.

The .end of the rock shaft 25 opposite the gear wheel 51, as shown, fixedly carries a crank arm 3 to which is pivotally connected a link 55 for interrupting the drive for the rewind mechanism when the toggle is broken" as just described, as will be clear from the above mentioned patent. Similarly the link 65 may be connected to crank arms 63 on other shafts 25 for similar printing couples or the like through which the web travels so that impression will be interrupted in all of these printing couples at the same time as well as interrupting operation of the rewind mechanism. The hot roll 5, as shown, is rotatably mounted on a hollow non-rotating arbor or shaft bl supported at opposite ends on the adjacent standards I by suitable supporting means carried by those standards as, for example, the brackets 69, bars H carried by those brackets, and further brackets 13 carried by the bars, the shaft El being carried at opposite ends by the last mentioned brackets.

The hot roll may be heated by non-rotating electric rwistance elements 15, more or less diagrammatically illustrated in Fig. 1, carried by the arbor 61, the energizing leads (not shown) for the resistance elements conveniently extending through the hollow of this arbor to the exterior thereof.

As illustrated, the rock shaft 25 adjacent each of opposite ends thereof fixedly carries an upwardly extending arm 11, each of which, as

ally connected at to the end of the arm 81 of a bell crank lever, the hubs B9 of which levers are rotatably mounted on the shaft or arbor till. As shown, the other arms 9| of these bell crank levers carry at their end portions the opposite ends of an arbor or shaft 83, which arbor rotatably supports a web engaging roller 95.

When the parts are in the position shown by Fig. 2; that is to say while the web is being fed, the roller will be out of contact with the web. When the shaft 25 is rotated, to cause the toggle to break and impression or the like to be interrupted, the arm T! will be moved to the position shown by Fig. 3, which will cause the roller 95 to swing to its position shown by that figure, in which position the roller engages the web and lifts it off the hot roll 5 so that the web, which under these conditions is not fed, will not be burned orscorched by the hot roll. By adjusting the pin 8!! lengthwise of the arm TI the distance the web is lifted from the hot roll may be regulated.

It will be understood that, within the scope of the appended claims, wide deviations may be .made from the embodiment of the invention described without departing from the spirit of the invention.

I claim:

1. Apparatus of the character described having, in combination, means for feeding a web and applying wet ink or the like to it, which means includes a pair of cooperating rotatable rolls between which the web passes for feeding it, means for drying the web comprising a heated part to which the moving web is normally presented, means operative while said rolls are rotating for separating them for rendering them inoperative to feed the web, means for directly moving the web out of presented relation to said heated part, and coordinated control means for operating the last two mentioned means, said control means having a position in which it causes said rolls to be separated and the web to. be moved out of presented relation to said heated part and another position in which it causes said rolls to be closed upon the web and the latter to be moved into presented relation to said heated part.

2. Apparatus of the character described having, in combination, a print roll and a cooperating pressure roll for feeding and applying ink or the like to a web passing between them, and means i for bodily moving the pressure roll while said print roll is rotating for closing them upon the web to feed it and for separating said rolls for rendering them inoperative to feed the web, means for drying the web comprising a heated roll over which the moving web passes in contact therewith, a movable device having a position'in which it moves the web out of contact with said heated roll and another position in which it permits the web to contact said heated roll, and coordinated control means for actuating said means for moving said pressure roll and said movable device, said control means having a position in which said print and pressure rolls are closed upon the web and said movable device is positioned to permit the web to contact said heated roll and another position in which said print and pressure rolls are in separated relation and said movable device is positioned to cause said web to be moved out of contact with said heated roll.

LEROY Q. PRESBY.

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