US1126741A - Plate finishing and cooling machine. - Google Patents

Description

W. EVENSEN.

PLATE FINISHING AND COOLING MACHINE.

APPLICATION FILED SEPT. 2, 1914.

Patented Feb. 2, 1915.

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PLATE FINISHING AND COOLING MACHINE.

APPLICATION FILED SEPT. 2, 1914.

1,126,741 Patented Feb. 2, 1915.

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UNITED STATES PATENT OFFICE.

WILLIAM EVENSEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GOSS PRINTING PRESS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PLATE FINISHING AND COOLING MACHINE.

Specification of Letters Patent.

Patented Feb. 2, 1915.

Original application filed June 3, 1914, Serial No. 842,591. Divided and this application filed September 2,

1914:. Serial No. 859,780.

To all whom it may concern:

Be it known that I, WVILLIAM EVENSEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Plate. Finishing and Cooling Machines, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to plate finishing and cooling machines of the type employing a rotatable drum or shell for carrying the printing plate into operative engagement with means for shaving the ribs on the inner face of the plate and for severing the tail and trimming the ends of the plate, such as is shown in my application Serial No. $2,591, filed une 3, 1914-, of which application my present application is a division.

It is one of the objects of my invention to provide new and improved means for locking a printing plate in the shell ready for the plate finishing operations, together with new and improved means for actuating the plate locking devices in proper time relative to the operation of the machine as a whole.

It is one of the more specific objects of my invention to provide means for locking a plate in the shell adapted to be actuated by the movement of tile device employed for starting the drum in rotation, said starting means being adapted to yield to permit the unlocking of the plate before the starting of the drum.

It is another object of my invention to improve machines of th s type in sundry details hereinafter pointed out.

The means by which I have accomplished my objects are illustrated in the accompanying drawings and are hereinafter specifically described. 'Ihat which I believe to be new is set forth in the claims.

In the drawings,Figure 1 is a side elevation of a machine embodying my improvements, showing the plate locking means in looking position with the drum about ready to start in rotation; Fig. 2 is a transverse section through my improved machine, certain of th parts being indicated diagrammatically by dotted lines, the view being taken substantially on line 22 of Fig. 1; Fig. 3 is substantially a section on line 3-3 of Fig. 1, showing a portion of the drum and the means for locking the plate in the drum,

together with a portion of the means for starting the drum in rotation; Fig. 4 is a detail, being a fragmentary view taken substantially on line lt of Fig. 1; Fig. 5 is a detail showing the construction of the twopart shifting bar or block employed for starting the drum in rotation; Fig. 6 is a fragmentary view, showing the action of the cam carried by the drum-rotating gear for unlocking the plate.

Referring to the several figures of the drawings, in which corresponding parts are indicated by the same reference characters, 20 indicates a frame having revolubly mounted thereon a drum 21. Revolubly mounted upon the drum 21 is a gear 22 adapted to be connected as hereinafter described to the drum for rotating it, the gear 22 being driven through the medium of a worm 23 mounted upon a shaft 24 which is driven by means of beveled gears 25% from a shaft 27 which is driven by any suitable means from any suitable source of power.

28 indicates a shaft revolubly mounted in the framework of the machine and adapted to be driven by means of a sprocket-wheel 29 and a sprocket-chain 30 from any suitable source of power. Mounted upon the shaft 28 and adapted to rotate therewith are two revoluble cutters 31-32 adapted to engage a printing plate carried by the drum 21 for cutting off the tail or riser from one end of the plate and for properly trimming the opposite end of the plate, the cutters 3132 being inclosed by suitable housings 33-55%.

3536 indicate ribs mounted upon the inner face of the drum 21, said ribs 3536 being fixed upon the inner face of the drum 21 at opposite sides thereof. Extending into the drum 21 from the front end thereof,- that is to say, from the end of the drum toward which the plate is adapted to be advanced in the course of the finishing and cooling operation,is a bracket 37 provided with plate-guides 3839 adapted to guide a printing plate as it is pushed into the drum upon the ribs 3536. Also carried by the bracket 37 there is a shaving-blade 40 of any suitable type as is Well understood in the art. Mounted adjacent to the rib 36 in the manner hereinafter described is a shield 41 adapted to protect the plate locking devices against the accumulation of shavings or chips therein. No claim is made herein for the shield 41 inasmuch as this device is the invention of Joseph J. WValser, covered by his application for patent thereon filed June 3, 1914, Serial N0.'842,579.

It will be understood that. in a complete operative embodiment of a plate-finishing machine suitable plate-stopping and platetransferring means may be provided as desired in accordance with the teachingsof the art, but inasmuch as such devices form no part of my present invention it is believed to be unnecessary to illustrate them herein.

Coming now to the means for locking a printing plate in position in the drum and for attaching the gear 22'to the drum for giving the drum a single complete rotation, 42 indicates a plate slidable upon the outer face of the drum 21, being provided with a lug 43 extending through a suitable slot in the Wall of the drum extending circumferentially thereof substantially in alinement with the rib 36 along which one edge of a printing plate 44 is slid into position in the drum, the rib 36 being formed in two parts so as to permit the lug 43 to be raised and lowered relative thereto. The plate 42 is beveled at its edges as is best shown in Fig. 1 and is adapted to slide between two blocks 4546 mounted upon the outer surface of the drum, the block 45 being adjustable longitudinally of the drum by means of adjusting devices 47 of any suitable type. The plate 42 has mounted upon its outer face a lug 48 in which is mounted a pin 49, the free end of which extends loosely through a lug 50 mounted upon the drum 21, as is best shown in Fig. 3, the pin 49 having mounted thereupon between the lugs 4850 a coil-spring 51 which tends to move the plate 42 upward in the normal position of the drum, carrying the lug 43 upward relative to the rib 36, serving to lock the printing plate 44 in the drum 21. The shield 41 hereinbefore referred to is secured in any suitable manner to the inner face of the lug 43 so as to be moved upward therewith into close contact with the adjacent edge of the printing plate 44.

.iivotally mounted upon a lug 52 carried bv the block 42 is an arm 53 pivotally con nected at its lower end by means of a pin 54 to an arm 55 which is pivotally connected at its lower end to the plate 42. The pin 54 has mounted upon its outer end a roller 56 adapted to be contacted from the rear by an arm 57 mounted upon a slidable shiftingbar or slide-block 58 hereinafter described, the roller 56 being also adapted to be contacted on its opposite side by a cam 59 carried by a ring 60 formed integral with or suitably attached to the gear 22. As will be readily understood, when the roller 56 is pushed forward by means of the arm 57 the spring 51 is rendered free to move the plate 42 upward, serving to move the lug 43 upward to lock the plate 44 in the drum 21. l/Vhen thereafter the cam 59 in the rotation of the gear 22 contacts the roller 56 on its opposite side, moving said roller into the position shown in Fig. 6, the plate 42 and the lug 43 are lowered, releasing the printing plate from engagement with the drum.

As is best shown in Fig. 1,the slide-block or shifting-bar 58 is mounted in a suitable bearing in the framework 20, having mountedupon its rear end a handle 61. Telescopically joined with the slide-bar or slide block 58 is a slide-bar or slide-block 62, as best shown in Fig. 5, the slide-block 62 being mounted at its front end in a suitable bearing upon a bracket 63 carried by the framework 20. Mounted upon the bracket 63 and extending rearwardly therefrom is a pin 64 the rear end of which passes freely through a lug 65 carried by the slide-bar 62, a spring (36 being mounted on said pin tending to hold the slide-bar 62 in its rearmost position. Pivotally mounted upon the framework 20 is a bell-crank lever 67 the horizontal arm of which is adapted to drop into a suitable groove in the slide-bar 62 when said slide-bar has been moved forward as hereinafter described. 7

The means for attaohingthe gear 22 to the drum 21 is substantially the same as j that shown in the application of Robert T.

suitable notch 70 in the face of the drum,

as shown in Fig. 2. As will be readily understood, in the absence of any means for turning the dog 68 out of the position shown in Fig. 2, when the advance portion of the dog, in the rotation. of the ring 60 in clockwise direction in said Fig. 2, comes in con; tact with the shoulder formed by the recess 70 in the drum, the drum would be caused to assume rotation with the gear 22. For the purpose of preventing the engagement of the dog 68 with the drum when desired, there is provided an arm 71 pivot ally mounted upon the bracket 63, provided at its lower end with a block 72 which is normally adapted to engage a hardened steel block 73 mounted upon the outer face of the dog 68 for turning the dog in counterclrckwise direction in Fig. 2 against the action of the spring 69, the engagement of the block 73 with the block 72 coming just at the critical time for clearing the forward end of the dog from the shoulder of the drum. The block 78 is freed from engage ment with the block 72 of the arm 71 for the continued rotation of the dog 68 with the gear 22 through the action of a nose 74: on the outer face of the dog being brought into engagement with the block 72, serving to kick the blocks 7273 out of engagement. The arm 71 is normally positioned so that the block 72 carried thereby will engage the block 73 carried by the dog 68, being normally held yieldingly in such position through the medium of a spring 75 carried by the bracket 63.

For causing the rotation of the drum 21 whenever desired by reason of the dog 68 being permitted to engage the recess of the drum, the slide-bar 62 has revolubly mounted upon it a roller 76 adapted to stand nor mally in rear of the arm 71. When, however, the handle 61 is pushed forward for locking the printing plate in the drum through the medium of the arm 57, as hereinbefore described, the roller 76 is brought into engagement with the upper end of the arm 71 swinging the arm against the action of the spring so as to carry the block 72 out of the path of the block 7 3, as shown in Fig. 2, permitting the dog 68 to engage the drum 21 for the rotation thereof. For bracing the slide-bar 62 and the roller 76 for the proper movement of the arm 71, a bar 77 is used, mounted upon the bracket 63 and extending rearwardly therefrom for engaging the outer face of the roller 76.

With the slide-bars 5862 in their rearmost position, with the horizontal arm of the lever 67 resting upon the upper face of the slide-bar 62, and with the toggle arms 5355 standing in the position shown in Fi g. 6 holding thelug =13 in its lowered position, a printing plate will be pushed into the drum 21 and brought to rest therein at the proper point through the medium of suitable plate-stopping means. As soon as the printing plate is properly positioned in the drum, the handle 61 will be pushed forward by the operator, causing the arms 5855 to be thrown forward through the medium of the arm 57 and the roller 56, causing the printing plate to be locked securely in the drum. At the same time the lever 67 catches in the groove in the slidebar 62 holding the slide-bar 62 in its advanced position against the action of the spring 66. At the same time, when the printing plate is being locked in the drum through the action of the arm 57, the lower end of the arm 71 is being displaced outward through the medium of the roller 76 as above described. When thereafter the dog 68 in its rotation with the gear 22 is brought opposite the recess 70 of the drum, the dog is permitted to cause its rotation. Shortly after the beginning of the rotation of the drum, a cam or lug 78 carried by the drum is brought into engagement with the vertically-extending arm of the lever 67, freeing the horizontally-extending arm of said lever from engagement with the groove in the slide-bar 62 and permitting the spring 66 to push the slide- bars 62 and 58 to the rear, permitting the lower end of the arm 71 to move inward again into position for engaging the dog 68. When the drum has been given a complete rotation for finishing a printing plate locked therein, the dog 68 is again moved past the block 72,- which this time operates to throw the dog out of engagement with the drum. In order to insure the stoppage of the drum 21 at the proper point upon the release of the dog 68 therefrom, there is provided a bell-crank lever 79 (shown diagrammatically in said Fig. 2) pivotally mounted upon a standard 80 rising from the framework20, said bellcrank lever carrying upon the end of one of its arms a roller v81 which is adapted to engage a suitable groove in a block 82 carried by the drum. The bell-crank lever 79 is held normally in position such that the roller 81 will engage the block 82 by means of a spring 88 interposed between the lever 79 and the framework 20 upon a pin 8-1. Shortly after the'stoppage of the drum 21, the cam 59 upon the continued rotation of the gear 22 is brought into contact with the roller 56, throwing the toggle levers 5355 to the rear and serving to unlock the plate from the drum as hereinbefore described.

In case the slide-bar 58 should be pushed forward a sufficient distance to secure a locking of the printing plate in the drum through the action of the arm 57 but not a sufficient distance to permit the lever 67 to engage the groove in the slide-bar 62, the slide-bars 5862 would be immediately returned to their rearmost position by the spring 66, and the drum 21 would accordingly not be locked to rotate with the gear 22. The cam 59 would then engage the roller 56 and unlock the printing plate, leaving the parts in the same condition as that in which they were before the handle 61 was pushed. In case the handle 61 should be pushed forward to the limit of its movement after the block 73 carried by the dog 68 has passed the block 72 carried by the arm 71 but before the cam 59 has passed the roller 56, the slide-bar 62 would be locked in its forward position by the lever 67, from which position it would not be released until the cam lug 78 was carried into engagement with the lever through the rotation of the drum. Almost immediately upon the forward movement of the bar 58 under these circumstances, the cam 59 would be brought in contact with the roller 56, pushing the roller 56 and the arm 57 to the rear and unlocking the plate in the drum, bringing the parts into the position shown in Fig. 6." This result is made possible through the use of the two slide-bars 5862 in place of the single slidebar. in the application of Johnston above referredto. After the plate has been unlocked in the manner thus described, all that it isnecessary to do to put the mechanism in'normal condition for rotation of the" drum when the dog 68 is again brought around to clutching position, is'for the operator to again push the handle61 forward for locking the plate in the drum through the action of the arm 57 upon the roller 56,

tion, toggle-levers connecting said slidablymounted plate with said shell, a spring tending to move said slidably-mounted plate into plate-locking position, into which position said toggle-levers are buckled relative'to each other, and a cam carried by said ring adapted upon a rotation of thering about the shell to engage said toggle-levers for moving said slidably-mounted plate against the action of said spring for releasing said printing plate from locked position.

2. In a plate finishing machine, the combination of a shell, manually-operated means for looking a printing plate in said shell, and automatically-acting means for unlock ing said printing plate from the shell, the manually-operated means being adapted to yield at any time to permit the unlocking of,

the plate.

3. In a plate finishing machine, the combination of a shell, manually-operated means comprising an arm adapted to be moved longitudinally of the shell for locking a printing plate in said shell, and automaticallyacting means for unlocking said printing plate from the shell, said arm being adapted to yield at anv time to permit the unlocking of the plate.

4-. In a plate finishingmachine, the combination of a shell, manually-operated means comprising an arm adapted to be moved lon gitudinally of the shell, a pair of toggle-la vers for looking a printing plate in said shell adapted to be operated by a longitudinal movement of said arm, and automatically acting means for operating said toggle-levers in the reverse direction for unlocking said printing plate from said shell, said arm being adapted to yield at any time to permi the. unlocking operation.

5.. In a plate finishing machine, the combiat any time to permit the unlocking of the plate.

6. In a plate finishing machine, the combination of a shell, means for intermittently rotating said shell, manually-operated means for looking a printing plate in said shell and for throwing said shell-rotating means intopOTJBlittlOIl, and automatically-acting means for unlocking said'printing plate trom the shell, the manually operated means being adapted to yield at any time to permit the unlocking of the plate from'the shell.

7. In a plate finishing machine, the combi-' nation of a shell, means for intermittently rotating said shell, a spring, actuating means adapted to be manually operated against the action of said spring for locking a printing plate in said shell and for throwing said for holding said actuating means in operative position against the action of said spring, means actuated by the rotation of the shell for releasing said holding means to permit the retraction of said actuating means, and means actuated by the shell-rotating means for unlocking the printing plateind'ependently of the rotation of the shell, said actuating means being adapted to yield at any time to permit the unlocking of the plate.

8. In a plate finishing machine, the combination of a shell,means for intermittently rotating said shell, a spring, means adapted to be manually operated against the action of said spring for locking a printing plate in said shell, actuating means operated by the movement of said manually-operated means for throwing said shell rotating means into operation when said rotating means reaches a predetermined position, means for holding said actuating means in operative position against the action of said shell-rotating means into operation, means spring, means actuated by the rotation of the shell for releasing said'holding means to permit the retractlon or sand actuating means, and means actuated by the shell-rotating means for unlocking the printing plate independently of the rotation of the shell, said manually-operated means being adapted to yield at any time to permit the unlocking of the plate; I

9. In a plate finish ng machine, the combination of a shell, rotary means for intermittently driving said shell, a slide-block, means actuated by the movement of said slide-block for looking a printing plate in said shell, a second slide-block bearing against said first-named slide-block and adapted to be moved therewith, a spring tending to hold said slide-blocks out of plate-locking position, means actuated by the movement of said second slide-block against the action of said spring adapted in the next-succeeding complete rotation of said shell-driving means to connect said driving means with the shell for rotating the shell, a latch adapted to engage and hold said second slide-block when it is moved against the action of said spring, means actuated by the rotation of said shell to release said latch from said second slide-block, and means actuated by the rotation of said shell-driving means to release said plate from said shell.

10. In a plate finishing machine, the combination of a shell, rotary means for intermittently driving said shell, a slide-block, means actuated by the movement of said slide-block for locking a printing plate in said shell, a second slide-block bearing against said first-named slide-block and adapted to be moved therewith, a spring tending to hold said slide-blocks out of plate-locking position, means actuated by the movement of saidsecond slide-block against the action of said spring adapted in the next-succeeding complete rotation of said shelldriving means to connect said driving means with the shell for rotating the shell,- a latch adapted to engage and hold said second slide-block when it is moved against the action of said spring, means actuated by the rotation of said shell to release said latch from said second slideblock, and means actuated by the rotation of said shell-driving means to release said plate from said shell, said first named slideblock being free to move to permit the retraction of said plate-locking means whether or not said latch has been released from said second slide-block.

11. In a plate finishing machine, the combination of a shell, rotary means for intermittently driving said shell, a slide-block, means actuated by the movement of said slideblock for locking a printing plate in said shell, a second slide-block telescopically joined with said first-named slide-block and slidable therewith, a spring bearing on said second slide-block and tending to prevent an operative stroke of said first named slide block for locking the plate in the shell, means actuated by the movement of said second slideblock against the action of said spring adapted in the neXtsucceeding complete rotation of said shell-driving means to connect said driving means with the shell for rotating the shell, a latch adapted to engage and hold said second slide-block when it is moved against the action of said spring, means actuated by the rotation of said shell to release said latch from said second slide-block, and means actuated by the rotation of said shelldriving means to release said plate from said shell.

WILLIAM EVEN SEN. Witnesses:

SAMUEL T. Goss, WV. H. DE BUCK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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