US1260903A - Printing-plate-shaving machine. - Google Patents

Description

A. A. HENZL.

PRINTING PLATE SHAVI NG MACHINE.

APPLICATION FILEDAPR. 9, H317- Patented Mar. 26, 1918.

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PRINTING PLATE SHAVING MACHINE.

APPLICATION FILED APR. 9. 1911.

1,260,903. Patented Mar, 26, 1918.

2 SHEETS-SHEET 2.

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j ALBERT A. nanzr, or CHICAGO, ILLINOIS, .41SSIGNOR. TO THE Goes PRINTING rnnss coivrennv, or cnrcseo, rumors, A CORPORATION or rumors.

is a specification, reference being had tothe T oaZZ whom it may concern:

Be it known that I, ALBERTA. HENIZI, a

citizen of the United States, and a resident,

of Chicago, inthe county of Cook and State of Illinois, have invented certain new. and

useful Improvements in Printing-Plates Shaving Machines, of which the following accompanying drawings. My invention relates to machines for shaving the inner faces of the ribs of curved printing plates, being preferably of the type illustrated in U. S. Patent No. 1 ,181,855, granted May 2, 1916. It has for its prin cipal object the provision of new and improved means for partially ejecting the printing plate at the conclusion of the shavingoperation soas to enable the workman to grasp the plate for removingitfrom the machine. It is another object ofmy invention to provide a form and arrangement of parts whereby theshaved plate 1s part ally ejected by automatic action and held 1n a partially ejected position until the machine is set'in motion for the next-succeeding shaving operation. It is another, object of my invention to improve machines of this type in sundry details hereinafter pointed out. The preferred means by whlch I have accomplished my severalobjects are illustrated in the drawings andv are hereinafter specifically described. That which I believe to be new and desire to cover by this application is set forth in the claims,

- In the drawings, L i j I -Figure 1 is an end view of a plate-shaving machine embodying my improved construction; j

Fig. 2 1s a top vlew of my improved machine; j v Fig. 3 is a side view of my improved machine, with the drum or bed partly broken away and partly shown in section;

Fig. 4 is a vertical cross-section taken substantially on line 4 4 of Fig. 2';

Fig. 5 is a vertical cross-sectiontaken substantially on line 55 of Fig. 2, but with the shaving plate in a. changed position;

Fig. 6 is a. fragmentary view of the machine as seenfrom the left Fig. 2;

Fig. 7 is an enlarged deta l, being a cross- Specificationof Letters Patent.

worm 18 mounted upon a shaft 19.

" rnrnrxne-rna'rn-snavmd MACHINE.

section taken substantially on line 7-7 of Fig. 6.

Patented Mar. 26, 1918. Application fii aa rne, 191 7. .Seria11 I o. 160,815.

'Referring to the several figures, in which corresponding parts are indicated by the same reference characters,:

1(lindicates a standard provided with a semi-cylindrical drum or bed 11 at its upper end, as is best shown in Fig. 5, whereby a curved printing-plate '12 is adapted to be held in position for having the circumferential ribs on its inner face given the desired trimming and smoothing operation, as is readily understood. The forward edge of the plate 12 as it is slid into the machine from the right sidethereof in Figs. 4 and 5 is adapted to rest against a longitudinallyextending bar 13 which is held in position as hereinafter described with its upper edge in contact with suitable portions of the framework of the ,machine. A longitudi: nally-extending shaft 14 is revolubly mountcomprising a part of the framework of the machine. The shaft14has fixedly mounted thereon a shaving-blade 16 of any approved type, which is adapted to be revolved in clockwise direction in Figs. 4. and 5 into operative engagement with the printingplate for the shaving operation. In the con: struction shown, the shaving-blade 16 and shaft 14 are revolved by meansof a wormgear 17 fixedly mounted upon the shaft 14, said gear 17 being drivenby means o f la 1e shaft 19, in turn, is driven by means of a clutch-member 20 which is feathered upon the shaft and which is adapted to be moved into and out of operative engagement with a clutch-member 21 which is fixedly connected with a drive-pulley 22, the drive-pulley 22 and the clutch-member 21 being revolubly mounted relative to the shaft 19. The clutch-member 20 is adapted to be moved into operative engagement with the clutch-member 21 by means of a suitable yoke 23 fixedlymounted upon a shaft 24 journaled upon one side of the standard 10, the'shaft 24 being normally held by means of a spring 25 in position for holding the clutch-member 20 out of operative engagement. The shaft 24 is rocked against the ed in suitablebearings upon cross-bars 15 the shaft 24. The lever 26 is adapted to be gages the lower end of the vertically-ex held in position against the action of the spring by means of a lug 27 which entending arm of a bell-crank lever 28, such lever 28 being held turned to the limit of its motion in counterclockwise direction in Fig. 6 by means of a spring 29, as illustrated in Fig. 2. As will be readily understood, when the lever 26 is moved downward, the bell crank lever 28 is moved by the spring 29 into engagement with the lug 27, such engagement continuing until the lever 28 is given a movement in clockwise direction in Fig. 6 against the action of the spring 29, the lever 28 thus serving to hold the clutchmembers 20 and 21 in operative engagement for the transmission of power to the shaft 19 and the shaft 14 for revolving the shaving-blade 16.

As is best shown in Figs. 4 and 6, the bar 13 is revolubly mounted by means of trunnions'upon the upper ends of bars or links 30-31which, in turn, are pivotally mounted upon arms 3233, respectively, which are fixed upon a longitudinally-extending shaft 34. As will be understood from an inspection of Fig. 4, whenever the shaft 34 is turned in counterclockwise direction in said figure, the bar 13 will be drawn downward through the medium of the links 30-31, the bar being caused to follow the face of the drum 11 by reason of the provision of springs 35-36, respectively, connecting the lower ends of the links with the shaft 34.

The springs 35-36 would have a tendency to hold the bar 13 in its uppermost position as shown in Fig. 4, but a spring 37 is provided in addition for assuring the bar 13 being held normally in the position shown, the spring 37 being connected with an arm 38 extending upward from the shaft 34.

In my improved construction, theshaft 14 is provided with a spring-seated member or arm 39 which is adapted to extend radially into the path of the printing-plate 12. This spring member 39 is slidably mounted in a housing 40 carried by the shaft 14, be-

i ing'held yieldingly in its outermost position by means of a coil spring 41 which is mounted upon the shank 42 of the arm. In the c011- struction shown, the housing 40 is mounted upon the shaft 14 through the medium of the sleeve 43 by which the blade 16 also is mounted upon the shaft 14 (see Fig. 7).

fwith the shavingblade 16 in the position shown in Fi 4, which is the normal inoperative posit1on of such blade, a printingplate is slid into position in the drum 11, and by the application of a slight force to the plate, its forward edge'is forced past the sprin arm 39, which is beveled at its outer end so as to permit of such action. With the blade in position with its edge in contact with the bar 13, as is shown in Fig. 5, the. lever 26 is given a downward stroke, servin to move tlieclutch-member 20 into operative engagement with the clutch-mem ber 21, as above described, for causing rotation of the shaving-blade, being held in its lowered position by the bell-crank lever 28-. Shortly after the shaving-blade 16 in its movement iii-clockwise direction in Fig. 4 has passed the forward edge of the plate 12 at the end of the shaving operation, an arm .44 projecting inward from the face; of the gear 17 is brought into contact with the rounded upper end of the arm 38 mounted upon the shaft 34, whereby upon the continued rotation ofthe gear 17 and the shaving-blade 16 in a clockwise direction in said Fig. 4, the shaft 34 is rocked in counterclockwise direction in said figure, serving to carry the bar 13 downward and serving to slide the plate 12 circumferentially of the drum 11 so as to bringithe edge of the plate 12 to the right of the spring arm 39, which is still moving toward the left in said figure. At about this same time, the arm 45 carried by the shaft 14 comes into contact with the horizontally-extendingarm of the 1 to carry the lever out of engagement with the lug 27 of the lever 26, permitting the spring 25 to move the lever 26 upward, serving thusto throw the clutch-member 20 out of engagement with the clutch-member 21, as above described. The shaving-blade 16 is thus brought to a stop in the position shown in Fig. 4. In the meantime, however, the arm 44 carried by the gear 17 will have passed out of contact with the arm 38 carried by the shaft 34, and the springs 35, 36 and 37 will have returned the bar 13 to the position shown in Fig. '4. The printing-plate 12 may then beheld in its partially ejected position by the friction of its outer surface upon the drum 11 In lieu of such frictional holding of the plate 12, the plate will be held in the position shown in Fig. 4 by the contact of its forward edge with the spring arm 39, the spring 41 being of sufiicientstrength to prevent the .plate from-slipping forward of its own momentum past the arm. v a

That which I claim asinyinvention, and desire to secure by Letters Patent, is,---

1. In a shaving-machine, the combination of a support for a curved printing-plate, an

ejector, means for operatingthe ejector for partially ejecting the plate, and means acting independently of the ejector for pre- Venting the return of the 2. In a shaving-machine, the combinationof a support for a curved printing-plate, an

ejector, means for operating the ejector for' 3. In a shaving-machine, the combination of a support for a curved printing-plate, an

ejector, means for operatingthe ejector for V partiallyjejecting the Plate,;stop means serv position.

ing to hold the plate in partially ejected V position, and means for returning the ejector to normal position out of contact with the printing-plate.

i. Ina shaving-mach1ne,the combination 'of a support for a curved printing-plate,

rotary means for shaving said printing plate, an ejector, means acting automatically after the completion of the shaving operation for operating the ejector for partially ejecting the printing-plate, 'means. serving to stop the rotary movementof the shaving means, yielding means adapted to return the ejectorto normal position out of contact With the printing-plate prior to the'end of the movement of the shaving means, and

means acting independently of'the ejector for maintaining the plate in partially ej ected position.

5. In a shaving-machine, the combination a of a support for a curved printing-plate, a shaft revolubly mounted thereon,a shavingblade fixedly mounted on said shaft and adapted to be revolved thereby for shaving the inner face of said printing-plate, an ejector, means for operating the ejector for partially ejecting the plate, and means carried around with the shaving-blade for pre-' venting the return of the printing-plate to operative position after the pressure of the ejector has been withdrawn from the plate. 6. In a shaving-machine, the combination of a support for a curved printing-plate, an

ejector, means for operating the ejector for partially ejecting the plate, and yielding.

means adapted normally to prevent the printing-plate from returning by its own Weight into operative position but adapted to permit the ejector to return to normal 7. In a shaving-machine, the combination of a support for a curved printing-plate, an ejector, means for operating the ejector for partially ejecting the plate, and a springseated member beveled'on both facesadapt- Copies of this patent may-be obtained for for operating the ejector for partially ejecting the plate, andan arm extending radially relative to said curved seat into the path of said plate acting independently of; the ejector for preventing the return of the printing-plate to operative position.

- 9. In a shaving-machine, the combination of asupport fora curved printing-plate, an ejector, means for operating the ejector for partially ejecting the plate, a spring arm extending into the path which the printingplate takes into and out of position in'the machine adapted to permit the ejector to pass in either direction and to permit the plate to be forced past in one direction but adapted to prevent the plate from passing in the reverse direction by its oWn WGl ht. .10. In a shaving-machine, the combination of a support for a curved printingplate, a shaft revolubly mounted thereon, a shaving-blade fixedly mounted on said shaft and adapted to be revolved thereby for shaving the inner face of said printingplate, an ejector, means for operating the ejector for partially ejecting the plate, a stop movably mounted on said shaft, and ielding means tending'to hold the stop in its outermost position for preventing the return of the printing-plate to operative position when the pressure of the ejector is Withdrawn from the plate.

11. In a shaving-machine, the combination of a support for a curved printingplate, a shaft revolubly'mountedthereon, a shaving-blade fixedly mounted on said shaft and adapted to be revolved thereby for shaving the inner face of said printingplate, an ejector, means for operatingthe ejector for partially ejecting the plate, a stop slidably mounted on said shaft and movable radially relative thereto, and yielding means tending to hold the stop in its outermost position for engaging the forward edge of the printing-plate for preventing the plate from returning to operative posi- 7 tion.

ALBERT HENZI.

five centseach; by addressing the Commissioner of Patents,

Washington, D. 0.

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