US581436A - Printing-machine - Google Patents

Description

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W. SCOTT. I PRINTING MACHINE.

No. 581,436. Patented Apr. 27, 1897.

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No. 581,436. Patented Apr; 27, 1897.

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W. SCOTT. PRINTING MACHINE.

Patented Apr. 2'7, 1897.

INVENTOR: 4/ I By his Al/omeyv, M,% W

WITNESSES:

UNITED STATES PATENT OFFIcE.

WVALTER SCOTT, OF PLAINFIELD, NElV JERSEY.

PRINTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 581 ,436, dated April 27, 1897.

Application filed July 26, 1893. Serial No. 481,520. (No model.)

To a whom it may concern.-

Be it knownthat I, WALTER ScoTT, a citizen of the United States, and a resident of Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Printing-Machines, of which the following is a specification.

The invention relates, primarily, to printing-machines wherein more than one color is impressed upon the paper between a reciprocating bed carrying a number of forms and an impression-cylinder; but some of the features are equally applicable to machines printing in but one color.

The objects of this invention are to improve and facilitate the distribution of the ink on the tables and inking devices, to shorten the time required therefor, to do the inking up, even while the forms are on the bed, without inking such forms, and to improve the general operation of the machine.

To these ends the invention consists of combinations of devices hereinafter described, and more particularly pointed out in the claims concluding this specification.

The preferred form of the invention is shown in the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation of a machine embodying the invention, showing many of the working parts. Fig. 2 is a side view of the automatic mechanism lifting the inkers from the forms. Fig. 3 is a plan view of the mechanism shown in Fig. 2. Fig. 4 is a crosssectional view showing the lifters and inkers. Figs. 5, 6, 7, and 8 are detail views of parts of the automatic mechanism. Fig. 9 is a side view of the mechanism shown in Fig. 1 for lifting the inkers for one form so they will not touch any other form. Fig. 10 is an end View of the last-mentioned mechanism. Figs. 11 and 12 are details of parts of the same. Fig. 13 is a side View, Fig. 14 an end View, Fig. 15 a detail View, and Fig. 16 a plan View, of mechanism carrying out the improvement in distributing ink. Fig. 17 is a diagram showing the directions of wiping on the inktables by adjacent rollers. Fig. 18 is a diagrammatic side View showing the printing and inking mechanisms.

The machine shown by me in the accompanying drawings in its general features embodies the same principles as those in the machine described in my application for Letters Patent of the United States, filed March 16, 1891, Serial No. 385,241, now Patent No. 505,961, dated October 3, 1893. In the lastnamed machine there is a two-revolution stopcylinder with feed and delivery cylinders and a reciprocating bed carrying two forms, inkers for each form, and, in case of lithographic printing, dampening devices for each form also. In the machine shown in the present case the same general features exist.

Referring to the accompanying drawings, the reference A marks a suitable framework supporting the moving parts of the machine.

The reference T marks the reciprocating bed, upon which are supported two color-' forms. These forms may be letter-press or lithographic or other kinds. The first colorform is indicated by the reference 1 and the second by the reference 2. The bed also carries ink-tables 3 and 4:.

The reference 1 marks the ink-rollers coacting with form 1 to ink the same, and I the inkers for form 2.

The reference w indicates the dampening devices for form 1, and 20 like dampeners for form 2 in case lithographic forms are used.

The reference F indicates the fountain and distributing rollers for table 3, and F a like arrangement for the table 4:. The impressioncylinder is marked 0, the feed-cylinder F, and the delivery-cylinder D. The feed and delivery cylinders are geared to the impres sion-cylinder directly.

Any suitable mechanism for operating the I grippers of the cylinders O, F, and D may be used. The impression-surface of the cylinder 0 does not extend clear around the same, but is removed or cut away, as indicated by the reference 5, so that during the return motion of the bed the forms thereon will not touch the said cylinder, which at that time is stationary. The feed and impression cylinders are provided with suitable sheet-retainers, as grippers 6 and '7, respectively. Sheets are supplied in any suitable way to the feedcylinder F, as from a feed-board 8 and gages 9. The printed sheets are run by the delivery cylinder or pulleys D and tapes 11 upon fliers 10, which lay them on board 12. The tapes 11 pass about said delivery-cylinder and a set of pulleys.

Power to drive the machine is received from the shaft S, which has a gear 13 thereon, meshing with a gear 14: of larger size supported on a shaft or stud in the machine. The crank 15 is rigidly connected with the gear let. A rolling gear-wheel 16, meshing with the stationary rack 17 and the rack 18 of the bed T, is connected with the crank 15 by a rod 19 in a well-known manner. At the other side of the bed, at the middle thereof, is a short rack 22, movable up and down on the bed and coacting, when in its upperposition, with the gear-segment (not shown) on the cylinder 0. The rack 22 is supported by the bell-lever 24: and link 25, which together form a toggle-joint. The free end of lever 24: is provided with a friction-roller 26 for for coaction with the cams 27 28, fixed to the frame of the machine. Suitable stops (not shown) limit the motion of the bell-lever 24 in the extreme positions of the rack 22. The cam 28 lowers the rack 22, and the cam 27 raises it to the position in which it coacts with the gear-segment. When the bed T is at the extremes of its motion, its rack is out of mesh with the mutilated gear, since the mutilated portion of this is then at its lowest position, thus allowing of the free baclcandforth motion of the rack, as is fully shown in my Letters Patent aforesaid. In order to start and stop the cylinder 0, the mechanism described and shown in my aforesaid Letters Patent No. 505,961 may be used.

For the purpose of more evenly and quickly distributing ink on the tables and inking up the inkers while the forms are on the bed I provide suitable mechanism for automatically lifting the inkers while that part of the bed carrying the forms is beneath them. This mechanism has a disconnectible part or is arranged to be thrown out of operation when it is desired to print, so that the inkers sup ply color to the forms. I will now describe the preferred form of such mechanism.

Underneath the shafts of the sets of inkers I I are lifters 46, there being one such lifter at each end of each set of said inkers. The

said lifters are suitably guided by the framework. Each lifter is operated by means of a bell-lever 47, which is connected therewith by the link 48 and which is also connected with an arm 49 of shaft 50 by a suit-able link, as 51, and the mechanism rocking the shaft 50. The mechanism shown for operating the shaft 50 consists of an arm 52, fast thereon, the said arm being provided with a perforation 53 and guiding-horns 5%; an arm 55, loose on the shaft and having an arc slot 56 and two cross notches or grooves 57 at the center of the arc slot; a link or connecting-rod 58, straddling the cam-shaft 59; cam 60, engaging the said rod 58 or a roller 61 thereon; the pin or bolt 62, which is formed with a head 63, a flattened shouldered portion 64 to fit the grooves 57, a

be duplicated for each set of inkers.

flattened portion or wings 65 to fit the arc slot 56, a round portion 66 to fit the perforation 53, and a flattened portion 67, upon which the eccentric 68 is pivoted by a pin, and an arm 69 to operate the eccentric. The eccentric 68 is of a size to fit between the horns 54c and the face of the arm 52, and the arm 6.) fits between the horns and is guided thereby. \Vith the parts in the position shown in Fig. 6 the shoulder 64: is out of the grooves 57 and beyond the face of the arm 55. By turning the arm 69 to the position shown in Fig. 7, the parts being in their proper position therefor, the shoulder 64: is causedto enter the grooves 57 and so look the arms 52 and 55 together. WVhen the parts are in the position shown in Fig. 6, the arm 55 may reciprocate without moving the arm 52, since the wings 65 are in slot 56. This construction is or may With the arms 52 and 55 locked together the operation is to lift the sets of inkers I 1 during the time that that part of the bed carrying the forms is beneath them. The shaft 50 has an arm 50 thereon, by which it may be oper ated by hand and so lift the inkers.

The ink-rollers for the forms are so placed with respect to the impression-cylinder that the form other than the one they ink also comes under them, and the ink-rollers are raised from their operative position to clear the said other form or forms, so as not to ink the same. The same is true of the waterrolls required in lithographic work. I will now describe the construction shown by me for accomplishing this purpose.

The reference 70 marks a roller, either an inking or dampening roller, and 71 marks its shaft.

Reference 72 indicates an open bearing for said shaft, and 73 indicates the stud or shaft integral with the bearing 72. A sleeve 74, to receive said stud 73, is adjustably mounted upon the frame of the machine by means of its slot 75 and screw-bolt 76. The shaft 73 is longer than the sleeve and projects below the same.

Pivoted to the framework of the machine is a lever 77, having an arm 78 and a projecting portion 7 9, upon which the lifting-toe 80 is sleeved loosely. Rigid with the toe 80 is the arm 81, having an elongated slot 82, the said arm 81 being in juxtaposition with the arm 78. A screw-bolt 83 passes through the slot 82 and engages the threaded hole 84: of the arm '7 8, and so makes the toe rigid with the lever. This slot 82 and pin 83 allow of adjustment of the relative positions of arms 78 and 81, whereby the time and extent of the lifting of the rollers 70 may be varied. The toe 80 comes beneath the end of the shaft 78. The lever 77 is operated by the rod 85, which is pivoted thereto and has a roller 86, engaging the cam 87 on a side shaft 88in the frame of the machine. There is one such toe and its operating mechanism for each of the ends of the shafts of the inking and dampening rollers. At each of the ends of the sets of inking and dampening rollers for the forms is placed a shaft 89, upon which are loosely mounted all the said levers 77 except one, which is made rigid with the shaft. on said shaft S, which engages a wormwheel 91 on the shaft 88, gives motion to the latter, the proportions of said worms being such that the shaft 88 makes one turn to one turn of the driving-crank 15 of the machine. The cams on the shaft 88 are arranged so as to lift their respective rollers from the forms they should not touch and to leave them down at other times. I prefer that the cams, 850., shall be so timed that the rollers shall be lifted consecutively. In case the form which the inking and dampening rollers should not touch does not run under all the said rollers those which it does not reach need not be lifted.

In carrying into practical effect in a printing-machine that improvement in distributing ink referred to above I arrange to move adjacent distributing-rollers in opposite directions at the time the ink-table is under them. A mechanism for this purpose is shown in Figs. 13, 14, 15, and 16. The references 9293 respectively indicate those distributing-rollers which move in opposite directions, as described. The shafts of these rollers 92 93 are provided with grooved collars 94 95, respectively. A side shaft 96 has a rigid arm 97 engaging the grooved cam 98 by means of a roller 99. Arms 100, also rigid on the shaft 96, engage the grooves of collars 94. The grooves of collars are engaged by the ends of arms 101, which are rigid with the arm 102, which carries a friction-roller 103 to engage the grooved cam 104. The cams 98 104 are mounted on shaft 88, above described, and are so timed or placed that they move their rollers in opposite directions during the time the ink-table is beneath the rollers. The diagram shown in Fig. 17 illustrates the wiping action of these rollers when the ink-table is under them. Thus a circumferential element of contact of one roller with the table moves across the same in the direction indicated by the line a I), while the circumferential element of contact of the adjacent roller with the table moves across the table simultaneously in the direction indicated by the line 0 d. The result is that the ink on the table is dragged or wiped in directions each of which traverses or crosses the direction in which it was dragged or wiped previously. Distributing-rollers 105, lying on top the rollers 92 93, are also shown.

I preferto feed the sheets to the impressioncylinder so that a fresh sheet will be fed thereto when the grippers thereofpass the feed-cylinder during the first revolution thereof, whereby the first color impressed upon the sheet comes from the form 1 (see Fig. 18) during the second revolution of the impression-cylinder and the sheet remains on the impression-cylinder during the return A worm motion of the bed and receives a second color from the form 2 during the first revolution of the impression-cylinder on the next printingstroke of the bed and is delivered to the grippers of the cylinder D when it reaches them, as this allows a short time for the first color to become somewhat dry before the second color is impressed upon the sheet.

Of course the construction shown and described for causing the impression-cylinder to make two revolutions maybe invertedthat is, the movable part may be on the cylinder and the fixed part on the bed-and in such case the movable segment may be on the end of .the cylinder, where the mutilated gear is herein shown, and coact with the rack 20, all as shown in my Letters Patent aforesaid, numbered 505,961, and the segment may be moved to its inactive position during the inking-up by suitable means.

Many changes in details and in groups of mechanism may be made without departing from the spirit of my invention.

That I claim as my invention, and desire to secure by Letters Patent, is

1. The combination with the to-and-fro moving bed T, forms, as 1 and 2, and ink-tables 3, 4, thereon, sets of inkers I, I movable bearings for said inkers, shafts 88, connections therefrom for lifting said inkers from time to time, lifting-plates 46, shaft 59, and connections therefrom to said plates 46, said last-named connections having disconnectible parts, substantially as described.

2. The combination of a rock-shaft, an arm fast thereon, an arm loose on the shaft and having a slot and cross-grooves, a shouldered pin in said slot, means for locking the pin with its shoulder in said cross-grooves, a set of inkers, lifters therefor, and connections between said shaft and lifters, substantially as described.

3. The combination of a rock-shaft, an arm rigid therewith, an arm loose on said shaft and having a slot and cross-grooves, means moving said loose arm, a pin having a flattened portion to work in the slot and a crossshoulder to fit the cross-grooves and means to move the pin endwise, substantially as described.

4. The combination of a rock-shaft, an arm rigid therewith, an arm loose on said shaft and having a slot and cross-grooves, means moving said loose arm, a pin having a fiattened portion to work in the slot and a crossshoulder to fit the cross-grooves and a cam to move the pin endwise, substantially as described.

5. The combination of shaft 50, arms 52, 55 thereon, slot 56, notches 57, means for moving arm 55, pin 62, cam 68, and lever 69, substantially as described.

6. The combination of shaft 50, arms 52, 55 thereon, slot 56, notches 57 means for moving arm 55, pin 62, horns 54, cam 68, and lever 69, substantially as described.

7. The combination with a roller, as 70,

and its shaft as '71, of bearings 72 on slidable I once of two witnesses, this 22d day of July, shafts O1 rods 73,1ifting-toes 80 under the 1893.

ends of said shafts '73 rockers S9 to which the ,7 r 1 v 1 toes are connected, rods 85, shaft 88 and cams I ALLER S60 1 5 87, substantially as described. W'itnesses:

In testimony that I claim the foregoing as GEO. A. BAKER;

inyinvention I have signed my name, in pi'os- RICHARD \V. BARKLEY.

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