US1092830A

US1092830A - Printing-press.

Info

Publication number: US1092830A
Application number: US67119912A
Authority: US
Inventors: Albert J Ford
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-01-15
Filing date: 1912-01-15
Publication date: 1914-04-14
Anticipated expiration: 1931-04-14

Description

A. J. FORD.

PRINTING PRESS.

APPLICATION IILED JAN. 15, 1912.

1,092,830; Patented Apr. 14, 1914.

6 SHEETS-SHEET l.

A. J. FORD. PRINTING PRESS. APPLICATION FILED JAN. 15, 1912.

1,,@9Q,.83(La Patented Apr. 14, 1914.

6 SHEETS-SHEET 2.

mg? 66 "lul 67 lllllllll' WITNESSES INVENTOR A. J. FORD. PRINTING PRESS. nrmmnon 211.111) JAN. 15, 1912.

1.,U92983U. Patented Apr. 14, 1914.

8 SHEETS-SHEET 3.

W/ T/VESSES' A. J. FORD.

PRINTING PRESS.

APPLICATION FILED JAN. 15, 1912. 1,092,830. S Patented Apr. 14, 1914.

6 SHEETS-SHEET 4.

WITNESSES 4% I Mad dug l 1 ATTOR/IIZ'Y A. J. FORD.

PRINTING PRESS. APPLICATION FILED JAN. 15. time.

. ,33 Patented Apr. 14, 1914.

a SHEETS-SHEET s.

v 1mm;

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WITNESSES D A IIWENTOI? 410 mam/ MM A. J. FORD.

PRINTING PRESS.

APPLICATION IILED JAN.15, 1912.

1,092,830., Patented Apr. 14,1914.

6 SHEETS-SHEET 6.

WITNESSES INVEll/TOR as A- ALBERT J. roan, on EW YORK, n. Y.

rmrme rnnss.

Specification of Letters Patent. Application filed January 15, 1912. Serial No. 671,199.

Patented Apr. 114, 1914.

certain new and useful Improvements in Printing-Presses, of which the following is a specification, reference being had therein to the accompanying drawings, forming part thereof. I I

My invention relates to printing presses and more particularly to multi-color oflset presses. a e

The object of the invention 1s to produce a press suited to print directly upon cylindrical work, for example, to print in colors upon metal tubes.

Iii-carrying out my invention I provide a work carrier having an intermittent or stepby-step shifting movement for bringing a plurality of work-carrying rollers or impressing rollers successively into cooperative relation with a printing cylinder or transfer cylinder, and I provide a plurality of plate cylinders to print in different colors successively on'the transfer surface or blanket of the transfer cylinder.

My invention includes the features of construction and combinations of parts hereinafter described and pointed out in the claims.

I shall now describe a printing press embodying my invention'and illustrated in the accompanying drawings and shall thereafter point out my invention in claims.

Figure .1 is a. front view of the press, the base of the frame being omitted, and shows the printing elements. Fig. 2 is a rear view of the press, illustrating the actuating mechanisms. Fig. 3 is an enlarged horiz ontal section on planes indicated by the line 3-3 of Fig. 2. Fig. 4 is a further enlargedpartialhorizontal section on a plane indicated by the line 4-4 of Figs.- 2 and 6 and particularly-shows the adjusting mechanism for the work carrier. Fig. 5 is a vertica-l sectional detail on a plane indicated by the line 5-5 of Fig. 4.-. Fig. 6 is a vertical section on a plane indicated by the lines 66 of Figs. 3 and 4, drawn to the scale of Fig. 4,

parts 1n the background being omitted. Fig. 7 is a similar view on a plane indicated by the line 77 of Fig. 3. Fig. 8 is a detail as viewed from the right in Fig. 7. Fig. 9is

illustrates the adjusting devices of one of Y the plate cylinders. Fig. 10 is a view from the left of Fig. 9, or a detail front elevation, with parts broken away. Fig. 11 is a vertical section on a plane indicated by the line 1111\o'f Fig. 9 as viewed from the right.

The printing press illustrated in the drawings and embodying my invention has a transfer cylinder l-fixedon the projecting end of a shaft 2 having bearings in a press frame 3. The transfer cylinder 1 is provided with a rubber blanket 4 for receiving the impression that is to be transferred to the workl The'direction of rotation of the transfer cylinder 1 is counter-clockwise .as viewed from the front of the press, as indicated by the arrow 5 (Fig. 1). Plate cylinders 6 are disposed around the periphery of the transfer cylinder 1 and are shown as four in number, for successively printing four colors on the blanket 4, the plate cylinders being provided with metallic printing plates 7 '(Fig. 9). Each of the plate cylinders is carried by a shaft 8 havlng bearings in the frame 3'. A work-carrying disk 9 is fixed on the projecting end of a shaft 10 which is parallel with the transfer cylinder shaft 2. The carrier disk 9 is provided eccentrically, at points equidistant from its axis and equidistant circumferentially from each other, with projecting spindles 11, shown as six in number, upon each of which is rotatively mounted a work-receiving impression roller 12. The carrier disk 9 is given a step-by-step or intermlttent rotation to bring the work-carrying impression rollers l2 successively into cooperative relation with the transfer cylinder 1, so that the multi-color impression will be printed from the blanket 4 upon the work on the impression rollers 12 as these rollers are successively brought to the impression position, the impression rollers being rotated by frictional contact of the blanket 4 with the cylindrical work carried by the impression rollers.

The several cooperative features of the press will now be particularly described.

Usual or suitable inking mechanisms are provided for the plate cylinders 6, and parts of such mechanisms are shown in outline in Figs. 1 and 2.

As the plate cylinders print upon a common transfer blanket 4, and the plates 7 of the different plat-e cylinders are not always of exactly .the same thickness, an adjusting device is provided for each plate cylinder for independently adjusting the pressure of its plate on the transfer blanket. To provide for this adjustment the plate cylinder shafts 8 are journalcd in eccentric sleeves 13 rotatively mounted in the frame 3, these sleeves being rotatively adjustable by means of arms 14 engaged at opposite sides by adjusting screws 15 threa ed through lugs of the press frame. The sleeves 13 may be firmly locked in adjusted position by means of set screws 16 (one of which is shown in Fig. 9) pressing blocks 17 against the sleeves. The plate cylinders arealso adjustable rot-a tively relatively to each other .and to the transfer cylinder 1.- The illustrated means providing this rotative adjustment'include flanged collars 18 splined on the reduced ends of the plate cylinder shafts 8 (Figs. 9 and 10) and held in place by Washers 19 and tap bolts 20. The collars 18 are provided with arcuate slots for adjustably receiving clamp-bolts 21 which passthrough these slots and screw into actuating gears 22. These actuating gears 22 are rotatively mounted relatively to the plate cylinder shafts 8 and collars 18 and are clamped in proper relation to the plate cylinders by means of the clamp-bolts 21. All of the actuating gears 22 mesh with a master gear 23 fixed on the cylinder shaft 2, so that the actuating gears 22, and likewise the plate cylinders 6 when the clamp bolts .21 are tightened, are rotated in timed relation with the transfer cylindefl. Forefiecting a rotative adjustment ofthe plate cylinders 6 of greater extent than that provided by the arcuate slots in .the collars 18, the. actuating gears 22 may be removed merely by remcvs ing the tap bolts 20, and-replaced atohanged meshing points with the master gear 23 In the drawingsthe work upon which the printing is being doneis shown: as c0mpara= tively small cylindrical tubes 24, such astlie smaller size of tooth paste tubes, such: tubes being of thin soft'metal, the thickness ofr the walls being exaggerated in Fig. 4 for illustrative pu oses. However, the press is adapted to prlnt on tubes of either larger or smaller size, both as to diameter and length of the tubes. For this urpose the spindles '11 are readily removab e, together with the work-carrying impression rollers 12 for the substitutionof other spindles and rollers of other lengths and diameters according to the size of the work. Each spindle 11 is provided with a tapered base plug 25 and a screw-threaded stud 26,the plug 25 fitting into a correspondingly tapered socket opening in the carrier disk 9 and being firmly and rigidly retained in place by a nut 1 jastin 27 and washer 28 on the stud 26. As the machine is shown at work upon comparatively small tubes, much smaller than the full dimensional capacity of the machine, the print-ing surfaces of the printing plates will be small and the plates as a whole may be corres ondingly small, and the printingplate shown in Fig. 9 occupies but a small part of the length of the plate cylinder, the remaining space being filled up by blank rings 29, the rings and plate being clamped 'in place by usual plate clamps 30 screwthreaded over the ends of the plate cylinder 6: See also Fig. 3.

To provide for the use of impression rollers of different diameters, for supporting tubes of different sizes, and also to regulate the pressure of the transfer blanket 4 on the tubes, adjusting mechanism is provided for the carrier disk 9. The carrier shaft 10 is ':journaled in slidable bearing blocks 31 and '32 adjustable along horizontal guideways provided in the frame of the press. For effecting such adjustment the slidable hearing blocks are respectively provided with adjusting

screws

33 and 34, one of which has righthand and the other left hand screw-threads, as shown in Fig. 4. The

adjusting'screws

33 and 34 are respectively provided with adjusting nuts consisting of bevel pinions 35 and. 36 respectively threaded ;upon them. Each bevel pinion- 35 and 36 abuts inner and

outer frame members

37 and 38, the press through pass (see Fig. 4)

;, 'Alined abutting stub shafts 40 and 41 have ends journaled in the outer frame jmembers'38. The stub shaft 40 has keyed thereon a, bevel pinion 42 and a hand wheel 43, the pinion 42 meshing with the adjusting bevel pinion 35 on the adjusting screw 33. The stub shaft 41 ha keyed thereon a bevel pinion 44 and an adjusting disk 45, the pinwhich are held rigidly in place on frame by bolts 39 (see Fig. 6), and

:ion 44 meshing with the pinion 36 on the dscrew 34. The hand wheel 43 and 'he'adjusting' disk 45 are adjustably clamped together by clamping bolts 46 passing through arcuate slots in the disk 45 and screwing into the hand wheel 43 (see Fig. 5) When the hand wheel 43 is' rotated, with the clamping bolts 46 tightened, the bevel pinions 42 and 44 will be rotated in unison, and the carrier disk 9 will be moved bodily toward or away from the transfer cylinder according to the direction of rotation of he hand wheel, thereby adjusting the pressure of the blanket 4 on the Work or moving the carrier 9 to a different position in accordance with the size of the work and corresponding diameter of the impression rollers carried by the carrier9. Angular adjustment of the carrier disk 9, to secure exa'ct alinement with the transfer cylinder and which. the adjusting screws freely.

even pressure upon the work, is accomplished by loosening the clamping bolts 46 and rotating the hand wheel, the bevel pinions 42 and 35 then being rotated and the bevel pinions 44 and 36 remaining stationary. The outer ends of the adjusting screws 35 and 36 are provided with jam nuts 47 for rigidly preserving the carrier 9 in adjusted position.

Carrier-shifting mechanism is provided for imparting the intermittent step-by-step rotative shifting movement to the carrierdisk 9, such mechanism including a pawland-ratchet device for imparting intermit- 5 tent partial rotations to the carrier 9and a latch device for holding the carrier at any position to which it is rotatively shifted. A six-toothed ratchet wheel 48 is fixed on the rearwardly-projecting portion of the carrier shaft 10 (see Figs. 2 and 3) and is actuatable by a gravity pawl 49 pivoted on an upwardly-extending arm 50 which is pivoted on the end of the carrier shaft just outward from the ratchet 48. A link 51 connects the arm 50 to a crank disk 52 fixed on the end of the rearwardly-projecting portion of the transfer cylinder shaft 2, the link 51 being shown in two parts clamped together by bolts to provide longitudinal adjustment of the link commensurate with the adjustment of the carrier 9 hereinbefore noted. substantially a half rotation of the cylinder shaft 2 from the position shown in Figs. 1, 2 and 3 will impart a one-sixth rotation to the carrier shaft 10, the latter remaining stationary during the remainder of a complete rotation of the cylinder shaft 2. The parts are so arranged that when the carrier 9 is stationary one of..the impression rollers 12 l0 will be stoppedat the transfer or impression position. The latch device for holding the impression roller at the transfer position will now be described. A peripherally notched locking .5 disk 53 is fixed on the carrier shaft 10 just outwardly from the bearing block 31, and the notches therein, six in number, corresponding to the stationary positions of the carrier 9, are adapted to receive the end of 0 a latchbolt 54 guided in horizontal ways provided in a bracket 55 extending from the bearing block 31. The latch 54 is actuated by a downwardly-extendin lever arm 56 carried by a rock shaft 57 ournaled in the 5 bracket 55 and also journaled in an auxiliary support 58 embracing the carrier shaft '10 and rigidly united to the bracket 55 by a cylindrical bar 59. The rock shaft 57 is actuated by an upwardly-extending lever 60,

D which is connected by a link 61 with the upper end of an upwardly-extending curved lever 62 which is pivoted at its lower end to the press frame 3 and carries intermediate of its length a cam-roller 63. The 'camroller 63 is engaged by a peripheral cam 64 carried by the transfer cylinder shaft 2. The cam 64 is so shaped and disposed as to retract the latch bolt 54 just prior to the actuation of the ratchet wheel 48 and to permit the latch bolt to be returned to locking position when the next succeeding notch in the locking disk 53 is brought to register therewith, this being the impression position for the next successive impression roller 12. The latch bolt is returned to the locking position by an extension coiled spring 65 (Fig. 3) stretched between a stud on the link 61 and the auxiliary rock-shaft-supp0rt 58. The link 61 is adjustably connected to the lever 60 by means of a shouldered stud bolt 66 pivoted in the lever 60 and clamped by a nut in a longitudinal slot in the link 61.

.The return of the latch bolt 54 to the look ing position is facilitated by making itslocking end, and also the notches in the locking disk 53, slightly tapered, as shown.

The blanket 4 must, of course, be of a length corresponding to the circumference of the largest work within the capacity of the press, with the result that more than one complete rotation of the work of the smaller sizes will'be made with the work in contact with the blanket 4 by which, as hereinbefore stated, it is frictionally rotated. To prevent blurring of the impression, the plate cylinders 6 are rotatively adjusted so as to print the impression on the last portion or the following end portion of the blanket, so that the transfer of the impression to the Work will be completed just as the end of the blanket is reached (see Fig. 1), the leading portion of the blanket being left blank.

This 1s an important feature of operation provided for by the construction hereinbefore described.

In the press illustrated in the drawings the intermittent rotation or shifting movements of the carrier 9 are in a clockwise direction when viewed from the front of the press and as indicated by the arrow 67 in Fig. 1. 1

There being six spindles on the work carrier, the operator has plenty of time to remove the printed tubes and replace them with blanks, all ofv the spindles being accessible excepting the one which is in coiiperative relation with the transfer cylinder. To facilitate the placing of the blanks on ,the impression rollers of the spindles, a chute or hopper 68 is provided from which the lowermost blank tube may be pushed directly over an impression roller. Should any of the tubes be misshaped or dented at the ends they may be reshaped on an expander 69 at the adjacent end of the carrier 10, which is provided for that purpose. This expander is removable so that an expander adapted to the work being done may be employed.

. The press may be driven from any source scribed within the principle and scope of my invention.

I claim:

1. A printing press having in combination a printing cylinder, a rotatively shiftable carrier mounted to rotate on an axis parallel with the axis of the printing cylinder, a plurality of impression rollers eccentrically carried by the carrier in parallel relation with the axis thereof, spaced bearings for the carrier, an adjusting device for each bearing, amanually actuatable member, actuating connections between such member and one of said devices, and releasable actuating connections between such member and the othersaid device.

2. A printing press having in combination a printing cylinder, a rotatively shiftable carrier mounted to rotate on an axis parallel with the axis of the printing cylinder, a plurality of spindles removably carried by the carrier and projecting therefrom in eccentric relation thereto and parallel with the axis thereof, an impression roller rotatively mounted on and removable with each spindle, carrier-shifting mechanism for imparting step-by-step rotation to the carrier to thereby successively shift the impression rollers into cooperative relation with the printing cylinder, spaced bearings for the carrier, an adjusting device for each bearing, a manually actuatable member, and actuating connections between such member and both of said devices.

3. A printing press having in combinationa printing cylinder, a plurality of impression rollers, a rotatively shiftable carrier for the impression rollers, means for removably supporting the impression rollers on the carrier, carrier-shifting mechanism for imparting step-by-step rotation to the carrier for successively shifting the impression rollers into cooperative relation with the printing cylinder, a pair of slidable bearing blocks for the carrier shaft, an adjusting screw for each block, an adjusting nut for each screw, a hand wheel, and actuating means connecting the wheel to each of the nuts.

4. A printing press having in combination a printing cylinder, a rotatively shiftable carrier mounted to rotate on an axis parallel with the axis of the printing cylinder, a plurality of impression rollers removably carried by the carrier and projecting therefrom in eccentric relation thereto and parallel with the axis thereof, carrier-shifting mechanism for imparting step-by-step rotation to the carrier for successively shifting the impression rollers into cooperative relation with the printing cylinder, spaced bearings for the carrier, an adjustin device for each bearing, a manually actuata le member, actuating connections between such member and one of said devices, and releasable actuating connections between such member and the other said device, whereby the carrier may be adjusted either bodily or angularly relatively to the printing cylinder for regulating the pressure between the impression rollers and the printing cylinder and also providing for the use of impression rollers of difierent diameters.

5. An ofiset'printing press having in combination a plurality of plate cylinders, a single transfer cylinder common to and cooperative with all of the plate cylinders, a pressure adjusting device for each plate cylinder for adjusting its pressure on the transfer cylinder relatively to the pressure thereon of the other plate cylinders, a plurality of impression rollers, a rotatively shiftable carrier for the impression rollers, means for removably supporting the impression rollers on the carrier, carrier-shifting mechanism for imparting step-by-step rotation to the carrier for successively shifting. the impression rollers into cooperative relation with the transfer cylinder, and adjusting mechanism for regulating the pressure between the transfer cylinder and the impression rollers and also providing for the use of impression rollers of different diameters.

6. A printing press havin in combination a printing cylinder, a carrier rotative in a plane parallel with the plane of rotation of the printing cylinder, a shaft rotative with the carrier, a plurality of impression rollers eccentrically carried by the carrier in parallel relation with the axis thereof, carriershifting mechanism for imparting step-bystep rotation to the carrier for successively shifting the impression rollers into cooperative'relation with the printing cylinder, a pair of slidable bearing blocks for the carrier shaft, an adjusting screwfor each block, an adjusting nut for each screw, a hand wheel, actuating means connect-ing the wheel to one of the nuts, and releasable actuating means connecting the wheel to the other nut.

7. An offset printing press having in combination a plurality of plate cylinders, a single transfer cylinder common to and cooperative with all of the plate" cylinders, a pressure adjusting device for each plate cylinder for adjusting its pressure on the transfer cylinder relatively to the pressure thereon of the other plate cylinders, a carrier rotative in a plane parallel with the plane of rotation of the transfer cylinder, a plurality of impression rollers eccentrically carried by the carrier in parallel relation with the axis thereof, earner-shifting mechanism for im- 1 parting step-by-step rotation to the carrier In testimony whereof I have aflixed my foi'l successively shifting 1the imprfissign signature in presence of two witnesses.

r0 ers into 006 erative re ation wit t e transfer cylindei and adjusting mechanism ALBERT FORD 5 for the carrier for regulating the pressure Witnesses:

between the transfer cylinder and the im- V. Dmnz, Jr.,

pression rollers. HARRY GHEwIs.