US1949432A - Means for adjusting printing rollers - Google Patents

Description

March 6,1934.

H. C, OSBORN MEANS FOR ADJUSTING PRINTING ROLLERS Filed Aug. 1, 1931 3 Sheets-Sheet 1 Fatented Mar. 6, 1934 I UIT'ED STATES PATENT GFFICE MEANS FOR ADJUSTING PRINTING ROLLERS Henry Chisholm Osborn, Cleveland, Ohio, as-

signor to Multigraph Company, Wilmington,- DeL, a corporation of Delaware Application August 1, 1931, Serial No. 554,425

17 Claims. (01. 101-218) This invention relates to mechanism for shif tating movement thereon. For this purpose I ing one member in a printing machine to vary its have shown the knob as rotatably mounted on approach to a cooperating member, and locking the shaft between a collar 30 and a washer 23, it inaset position. The invention is well adapted which is secured to the end of the shaft by a for use with rotary platens, where it is desired to suitable stud 24. 89 be able to shift the platen roller to idle position Secured to the shaft between the knob manually, or to return it and lock it in its active and frame member 12 is a suitable arm or collar position. 39. Pivotally mounted on this collar or arm is To the above end, I have provided an eccentric a latch- 31, in. the form of a bell crank pivoted 1o shaft on which the roller is mounted, a handle to the arm at 32. The inner end of this latch 5 for such shaft, by which it may be readily turned, is adapted to engage a keeper or groove 18 in the handle having some loose play with reference a disc 40, which is loosely mounted on the shaft to the. shaft, and means whereby the movement portion 15, and is secured to the frame 12, as will of the handle, through the loose play region, may be hereinafter described. The latch 31 is nor- 15. operate anormally active latch to release the shaft mally pressed toward the disc by a spring 35,

' and enable it to be turned by continued movemounted in the arm 30 and pressing outwardly ment of the handle. My mechanism, therefore, against the outer arm 33 of the bell crank. provides a shaft normally positively locked, and The outer arm 33 of the latch 31 extends into a manually operable handle, which by a continan annular recess of groove 27 in the knob 20.,

20. uous movement may release the lock and then The latch has its upper and outer surface 34 bevturn the shaft. ihis is more fully hereinafter elled at an acute angle to the tangent of the knob, explained in connection with the drawings, illusinclining such a direction that this surface is trating a preferred embodiment thereof. cammed downwardly by a pin 41 carried by the In the drawings, Fig, 1 is a side elevation of a knob, when the latter is turned in the direction :25. printing mechanism provided with a roller platen to release the roller. and a form roll, both of which are equipped with Normally, the parts stand with the eccentric my handle and lock; Fig. 2 is a longitudinal secintermediate region of the shaft projecting totion through the roller platen, the plane of the ward the member with which the. roller cooperseotion being indicated by the lines 2'.2 on Fig. 1 ates (which may be the drum 13), so that the :30 Fig. 3 is a longitudinal section through the form roller is active, and the roller is positively locked roll, as indicated by the lines 3.3 on Fig. 1; Fig. e in this position by the latch engaging the. groove is an enlarged sectional detail through the handle 18 in the normally fixed plate 40, the latch be- ;and lock, the plane of the section being substaning held therein by the spring 35, the outer end .tially the same as that of Fig. 2-; Fig. 5 is a transof the latch freely occupying the recess 27 in the 135. verse section through the handle and lock, as knob; indicated by the lines 5 -5 on Fig. l; Fig. 6 is a Now, to unlock the latch and return the roller sectional ,detail similar to Fig. i, but illustrating to idle position by a single movement of the hand, pertain of the parts in a different position. the operator merely grasps the knob 20 and turns As shown in the drawings, 10 indicates a shaft it in a clockwise direction (viewed facing the g0. mounted in suitable bearings, which may be frame free end of the knob 20 as in Figs. 1 and 5). The

plates 1 -1 and 12, of a Multigraph or other rotary first portion ofthis movement has no effect on printing machine, oarryinga form roller or transthe shaft 10, but operates to cam the latch 31 to fer roller 13. idle position, and as soon as the knobv 20 has efq'lhe journal-led portions 14 and 15 of the shaft fected this result, the lower face of the outermost 45 10 are eccentric to the main body portion 16.. portion of the latch arm engages the hub 43 of The platen or other roller 1'7 is mounted on the the knob and as the distance between such hub eccentric portion of this shaft, and hence, while and pin 41 is less than the maximum height of always rotatable, has a variable position as to the latch, the, continuation of the movement ro-. its axis according to the position of the shaft. tates the shaft 10, together with the arm 3.0 car..

50 Mounted on the end of the shaft 10 is a handle rying the latch, and thus by reason of the reced-. inth e form Of a kn preferably having a ing eccentricity ofthe shaft 10 carries the roller knurled periphery 21 and of such size that it 1'7 to idle position. may be readily; grasped by the operators hand When left. in idle position, the latch bears idly and given a partial rotation. This knob is so by friction caused by the spring 35 against the 55 secured to the shaft 10 that it may have a roarcuaterubbing plate 40 on the side ofthe frames plate 12'. This friction is comparatively light, but is suflicient to prevent inadvertent displacement of the lmob and shaft.

The plate 40 is settable to various positions to adjust the platen pressure, the position of the platen being normally fixed by screws 42 carried by the frame and arranged to have their heads bear against the outer face of the disc.

When it is desired to return the roller 17 to active position, the operator simply grasps the knob 20 and turns it in the counter-clockwise direction. This movement causes a pin la, carried by the knob 20, to engage the latch arm 33 and brings back the shaft 10 and latch 31 to active position and the latch, being unrestrained by the cam pin 41 of the knob 20, springs back into its keeper 18 at the end of the return movement of the knob. A suitable abutment 45 carried by its keeper plate 40 may limit the movement of the parts in this direction, so that the return of the knob the maximum amount causes the latch to engage its keeper automatically. A similar abutment 46 carried by the plate 40 serves to limit the movement of the knob 20 in the clockwise 1 direction and prevents the turning of the shaft 10 to an extent which would cause the eccentric portion of the shaft to bring the platen roll 17 towards the transfer roll 13.

It is also desirable to be able to shift the form roll to an idle position manually and lock it in its active position without disturbing the relationship between the various ink distributing rolls and the pattern roll. To the above end I provide a second eccentric shaft on which the pattern roll is mounted and provide this shaft with a latch similar to the one heretofore described. However, in this instance, the arrangement of the eccentric portion of the shaft is such that both the pattern roll and a supplemental frame in which the pattern roll,

the ink fountain and its ink rolls are mounted,

moves as a unit away from the transfer roll 13.

As shown in the drawings, and especially Figs.

1 and 3, 50 and 51 indicate a pair of supplemental frame plates pivotally mounted on the frame members 11 and 12, respectively, by suitable studs 52. Rotatably journalled in suitable bearings in the supplemental frame plates is a shaft 53. The ends 54, of the shaft 53, project beyond the frame plates 50 and 51 and are eccentric to the main portion or" the shaft which is journalled in the frame plates, and supports the form roll 55.

Journalled on the eccentric portions of the shaft are links 60, the other ends of which are pivotally mounted as at 61 to the frame plates 11 and 12, respectively, of the printing machine. To the rear of the form roll is a suitable ink fountain 65, which, through the medium of distributing rolls 66, serves to supply ink to the form roll.

Mounted on the right hand end of the shaft 50 is a knob '70, similar in all respects to the knob clamping screws '77.

20, heretofore described. Mounted on the eccentric portions of the shaft between the knob and its adjacent link 60 is a collar 71 having an ear 72, to which is secured a latch '73, similar to the latch 31, heretofore described. The latch is arranged to engage a keeper or groove '75 in a disc '76, which is loosely mounted on the eccentric portion of the shaft, and which is retained in a fixed position relative to the link 60, by suitable The latch mechanism is similar in all respects to that illustrated in connection with the platen roll 17, heretofore described. However, the arrangement is such that when the knob is rotated in a clockwise direction to throw the eccentric portion of the shaft so as to carry the form roll out of engagement with its cooperating roll 13, it will likewise rock the frame plates 50 and 51 about their pivots 52, thereby retaining the relationship between the pattern roll and the ink fountain and its distributing rolls.

When it is desired to shift the form roll away from its cooperating impression roll 13, the operator grasps the knob and turns it in a clockwise direction, whereupon the pin 41 of that knob cooperates with its latch '73, withdrawing it from the slot '75 in the plate 75, thereafter carrying the shaft in a position to throw the eccentric in a direction to separate the rolls 55 and 13.

When it is desired to return the roller to active position, the operator simply grasps the knob '76 and turns it in a counter-clockwise direction, which brings the shaft 53 back to active position and the latch '75, being unrestrained by the cam action of its respective pin 41, springs into its keeper at the end of the return movement. Suitable abutments i land 45, similar to those heretofore described in connection with the knob 26, serve to limit the extreme movement of the eccentric throw.

It will be seen that my mechanism is very simple in construction, easily operated, and at the same time effective in positively locking a printing member in its active position while allowing its release by the single movement of the operators hand.

I claim:

1. In a printing machine, means for adjusting one of two cooperating members with reference to the other, comprising an eccentric associated with one of the members and controlling the approach of the members, manually actuatable means for turning the eccentric, and a positive lock for the eccentric reieased by a preliminary movement of the manually engageable portion of said turning means.

2. The combination, with two cooperating members in a printing machine, of means for adjusting one of them with reference to the other, comprising an eccentric, a iock for the eccentric, and a rotative handle provided with means to release the lock in the first part of the handle rotation and to shift the eccentric in a subsequent part of said rotation in the same direction.

3. The combination with two cooperating members of a printing machine, of an eccentric shaft, the rotative position of which controls the approach of said members, a handle on the shaft, a positive lock for the shaft, the handle having a certain amount of loose play on the shaft, and means whereby the movement of the handle in the direction to turn the shaft will first withdraw the lock.

its

4. The means for shifting and locking one printing member with reference to another, comprising an eccentrically mounted shaft associated with one of the members to be shifted, a knob loose on said shaft so positioned that it may be grasped by the operator, a positive lock for the shaft released by a movement of the knob with reference to the shaft, and means whereby the knob mayturn the shaft after the release of the lock.

5. The means for adjusting a printing roller, comprising an eccentrically mounted shaft carrying the roller, a handle on the shaft, and a positive lock for the roller released by a preliminary movement of the handle.

6. The combination of a roller, an eccentric shaft on which the same is mounted, a handle on the shaft, a positive lock for the roller, the handle having a certain amount of loose play on the shaft, and means whereby the movement of the handle in the direction to turn the shaft to idle position will first withdraw the lock.

7. The combination of a roller, an eccentrically mounted shaft carrying the same, a knob carried by the shaft and having a loose play connection therewith, a latch carried by the shaft and coacting with a cam surface on the knob, whereby the idle movement of the knob may release the latch.

8. The combination with a frame, a shaft eccentrically journalled therein, a keeper on the frame, a latch mounted on the shaft and springpressed to give it a tendency to engage said keeper, and a handle on the shaft having some free movement which acts to cam the latch to idle position before the handle turns the shaft.

9. The combination with a frame, a shaft eccentrically journalled therein, a member carried by the shaft, a latch in the form of a bell crank carried by said member, said bell crank being spring pressed so that its inner end is adapted to engage a keeper in the frame, a knob mounted on the shaft and having loose play connection therewith in an arcuate direction, the projecting arm of the bell crank latch having a cam surface, and means on the knob to engage such surface and move the latch to an idle position.

10. The combination, with a frame, of a rotary printing member mounted therein, a coacting roller axially parallel with the printing member, a shaft for said roller eccentrically journalled in the frame, a knob on the end of the shaft having a limited loose play connection therewith, whereby the knob may be grasped by the operators hand and turned a short distance, independently of the shaft, an arm rigid with the shaft, a latch lever pivoted on the arm and adapted to engage a keeper in the frame, a spring tending to move the latch lever into engaging position, said latch lever extending toward the knob and having a cam surface thereon, said cam surface being adapted to coact with the knob to release the latch during the free movement of the knob, before the knob operates to turn the shaft.

11. In a printing machine, the combination with the frame, of a rotary printing member mounted therein, a rotary platen on an axis parallel with the printing member, a shaft eccentrically journalled in the frame and carrying the platen, a knob on the projecting end of the platen shaft, said knob having a limited loose play connection with the shaft in an arcuate direction, and a latch adapted to lock the shaft in its active position, said knob being adapted by its loose play movement to release the latch.

12. The means for adjusting a printing roller and supplemental frame therefor relative to a second roller mounted in a main frame, comprising a pivotal connection between the main frame and the supplemental frame, a shaft journalled in said supplemental frame and rotatably supporting the first named roller and provided with an eccentric portion, a link pivoted at one end to the main frame and having its other end journalled on the eccentric portion of said shaft, a handle on said ecentric portion of the shaft, a positive lock for the roller and frame released by a preliminary movement of the handle, and wherein the rotation of said shaft causes the first named roller and the supplemental frame to move as a unit away from the second named roller.

13. The combination with two cooperating members in a printing machine, of means for adjusting one of them with reference to the other, comprising mechanism for moving one of said members, a lock for such mechanism, and a rotative handle provided with means to release the lock on the first part of the rotation of the handle and to operate said mechanism in a subsequent part of said rotation in the same direction.

14. The combination with two cooperating members of a printing machine, of a shaft, and means whereby the partial rotation of the shaft may change the approach of said members, a handle on the shaft, a positive lock for the shaft, the handle having a certain amount of loose play on the shaft, and means whereby the movement of the handle to turn the shaft will first withdraw the lock.

15. The combination with two cooperating members of a printing machine, of a shaft and means operable thereby to change the approach of said members, a knob carried by the shaft and having a loose play connection therewith, and a 110 latch carried by the shaft and coacting with a cam surface on the knob whereby an idle movement of the knob may release the latch.

16. The combination in a printing machine, of a main frame, a supplemental frame pivoted 115 thereto, means for adjusting the relation of the frames, comprising a shaft mounted in one of the frames and a connection between the shaft and the other frame, a handle on said shaft adapted to turn it, and a lock for the shaft, releasable by a preliminary movement of the handle.

17. In a printing machine, the combination of a main frame, a roller carried thereby, a supplemental frame pivoted to the main frame, a roller carried by the suplemental frame adapted to coact with the roller in the main frame, means for adjusting the relation of said rollers, comprising a shaft journalled in one of the frames, mechanism connecting it with the other frame, a knob on the shaft whereby it may be given a rotative movement, a latch normally locking the shaft, said knob having loose play on the shaft and having a cam adapted to act on the latch, whereby the first part of a rotative movement of the knob may release the latch and a subsequent part of said 5 rotative movement turn the shaft.

HENRY CHISHOLM OSBORN.

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