US1247944A

US1247944A - Inking mechanism for printing-presses.

Info

Publication number: US1247944A
Application number: US9779316A
Authority: US
Inventors: William M Evensen
Original assignee: Goss Printing Press Co Ltd USA
Current assignee: Goss Printing Press Co Ltd USA
Priority date: 1916-05-16
Filing date: 1916-05-16
Publication date: 1917-11-27
Anticipated expiration: 1934-11-27

Description

W. M. EVENSEN.

INKING M ECHANISM FOR PRINTING PRESSES. APPLlCATlON mu) MAY ls. Isle.

1,7,9@%, Patented'Nov. 27, 1917 2 SHiETS-SHEET 1v APPLICATlON FILED MAY 16. I916.

Patanted Nov 2?, 1917.

2 SHEETS-SHEET 2.

mmgmg Ill/VE/JTOR learnt t me,

WILLIAM EVENSEN, or CHICAGO, ILLINOIS, Assie von TQ qoss estuar ne Pra ses COMPA Y, A conronarion or rttiluors.

Specification of Letters Patent.

Patented Nev. 27, f917 App ic t e May 1316- Serial N 9 37 To all whom it may concern:

Be it known that I, lVILLIAM M. EVEN- SEN, a citizen of the United States, residing at Chicago, coimty of Cook, and State of Illinois, have invented certain new and useful Improvements in Inking Mechanisms for Printing-Presses, of which the following is a specification.

The invention relates to inking mechanisms for printing presses, and more par ticularly to inking mechanisms for rotatory printing presses,

Objects of the invention will be set forth hereinafter in part, and in part will be obvious herefrom, said objectsbeing attained through the means and combinations pointed out in the accompanying claims.

The invention consists in the novel parts, construct-ions, arrangements, combinations and improvements herein shown and described.

The accompanying drawings, referred to herein and forming a part hereof, illustrate one embodiment of the invention, the same serving in connection with the description herein to explain the principles of the invention.

Of the drawings:

Figure 1 is a fragmentary elevation of a portion of a printing press, with parts omitted, said figure showing a mechanism constructed in accordance with the principles of the invention;

Fig. 2 is a fragmentary elevation of a portion of the mechanism at the right-hand part of Fig. 1;

Fig. 3 is a detail edge view, on an enlarged scale, of the cam for operating the vibrating feed roller;

Fig. 4c is a face View, also on an enlarged scale of the cam, looking at Fig. 3 from the left; i

Fig. 5 is a face View of the cam hub, likewise on an enlarged scale Fig. 6 is a face view of the cam;

Fig. 7 is an edge view of the cam looking at Fig. 6 from the right; and,

Fig. 8 is a horizontal central the line A-B of Fig. 4.

In fast rotary perfecting presses, and like machines, the production of a satisfactory printed product can be secured only through an efficie t pera ion f the nk ng mechan sm- .The ope t on of th ink ng mecha rise; i equired to be very rapid, but at the section on same time it must be very accurate and unie o m in Order v Pr duce an a ceptabl or s t f ry p u t Ditfi l y as b e experienced in previous mechanisms with the. operation of the swinging ink feeding rollerwhich oscillates, between the ink fountain roller and the ink drum, taking successive small quantitiesofink from the fountain roller and supplying them to the drum. This roller is usually a composition roller, and varies in size from time to time, a roller shrinking and becoming of less diameter with age, and later such aroller is replaced by a new roller-of larger size and diameter than the old one. The present invention provides mechanism whereby, with such variations in the size of the swinging ink feeding roller in View, and also having in view the prevention of destructive slaminin tog th Of e rol e e l as o he 0ba uniform coaction or degree of contact or pressure between the oscillating ink feeding roller and both the fountain roll and the ink drum are maintained, and in certain aspects of the invention, in connecn i h mech n sm he i th o illa ns in fe ding 1 1 i a t at nd $91 trolled by therim or periphery of an actuating cam at all points in its travel,

Referring by way of example to the accompanying drawings, an ink fountain is represented by numeral 1, and the fountain roller therewithin by 2, The ink drum 3 cooperates with the usual distributing or vibrating rollers (not shown), and these distributing rollers in turn cooperate with and 1111; t o m ll r h c latte n the forms upon the cylinders in a wellrknown manner.

The ink feeding roller 4 swings to and fro between the fountain roller 2 and the ink drum 3, co veying periodically a small quantity of ink from the fountain roll to the ink drum, the ink being carried forward from the latter to the form in the manner and by the mechanism briefly indica-teigl above. The fountain roll 2 is intermittently rotated for a short distance from time to time in the usual manner. The roller .4 is

s ppers d y ts nint e 5 i wi eli 1 cessles in .the upper end of arms .6, roller M f being held in position ,by latches lat hes lze mo nted o the arm a and c e' s t p ntles 5 of t 1 91- t T18 mn mwyng arm fi are loc ted Wi i-fi th? press frame 8, and are fixed to a rock shaft 9, which shaft is journaled transversely in the press frame (only one of the arms 6 and one end of the roller 4 being shown in the drawings).

The actuating means for the ink feeding roller 3 comprises means included in the connections between the roller and its cam for varying the angular relation in either direction of the roller with respect to the cam, thereby regulating and changing as desired the length of travel of the ink-feeding roller in either direction. In the embodied form of such means, the arms 6 are fixed to the shaft 9 in a suitable manner preferably adjustably by means of set or clamping screws 10. The end of the rock shaft 9 extends outside of the press frame 8, and from such outside end of the shaft 9 extends a lever arm 11, which is fixed to the shaft in a suitable manner, as by a key or feather 12. The outer end of lever 11 has formed therein an elongated slot 13, and at ei her side of the slot, the lever is provided with internally threaded bosses or

extensions

14 and 15. Into these bosses respectively, are threaded screws 16 and 1 which screws are provided respectively with locking nuts 18 and 19, the interior ends of the

screws

16 and 17 projecting into the slot 13. Projecting into the aperture 13 is a cylindrical pin 20, the inner end of the

screws

16 and 17 engaging with the pin 20 on opposite sides thereof. By turning the

screws

16 and 17 the travel of the inkfeeding roll may be lengthened or'shortened toward either the fountain roll or the ink drum, the effective length of the rod being changed by the setting of the screws to effect this result.

The pin 20 is attached to the upper end of a rod 21, said rod at its upper end having an enlarged circular head 22 with a face bearing against a corresponding face upon the head or end of the lever arm 11. The rod 21, at its lower end, is formed as a yoke 23, straddlin a shaft 24, which shaft is carried in suitable bearings'25 upon the machine frame. The yoke 23 carries a cam roll 26, said cam roll engaging the rim or periphery of a cam 27 which cam is fixed to and rotates with the shaft 24. Upon the opposite side of the yoke 23 is a collar 28, encircling the shaft 24, and holding the yoke in position with the cam roll 26 engaging thecam 27. The shaft 25 is driven in a suitable manner, as by beveled gears 29, from the shaft 30. It will be seen that by turning the

screws

16 and 17, the angular relation in either direction of the arm 11 to the rod 21 and to the cam 27 may be determined and regulated as desired.

In accordance with certain features ofthe invention, means are provided for varying the. diametral relation of the cam 27 and its circling the shaft anc shaft.

shaft 24, and also for positioning the cam angularly upon its shaft. By these various means, the extent and location'of the path of travel of the oscillating ink-feeding roller may be varied and determined, the amount or degree of contact and pressure between the ink feeding roller and the ink fountain roller and between the ink feeding roller and the ink drum may be nicely and accurately maintained and regulated despite variations in the size of the ink feeding roller, and at the same time the ink feeding rolleris under control throughout its entire extent the supplying roller against the fountain roller or the ink drum. 7

In the embodied form of the cam, there is provided a hub fixed to and rotating with the shaft and a cam )roper, referably enprovid ing a bearing or contacting surface all the way around its periphery, thereby keeping the oscillating inkfeeding rollerunder control at all times, the cam being tionable relatively to the hub and to its In such embodied form, the hub 35 has a central opening 36 through which passes the shaft 24. The'hub is held in fixed position to rotate with its shaft, and is angularly adjustable about itsshaft by suitable means such as clamping or binding screws threading into the radially arranged

apertures

37 and 38. Upon the face or side of the hub 35 there is provided a dovetail or undercut part, arranged centrally across the face of the hub. As embodied, the face 39 is undercut as shown at 40 and 41 providing therebetween a flat bearing face 42 for the-inner face of the cam.

r The cam proper has its rim or periphery 43 as the contactingor operating surface for the cam roll. Upon its inner face 44 is a projecting portion 45 extending across the face of the cam symmetrically with respect to the center thereof, said projecting part 45 having its

side edges

46 and 47 undercut or beveled so as to fit snugly and to be held by and to slide within the

undercut edges

40 and 41 of the hub, as shown best in Fig. 3. The cam has its internal aperture 48 considerably larger than the internal aperture 36. of the hub and likewise considerably larger than the diameterof the shaft 24. Thus the cam may slide along the face of the hub, changing the diametral relation thereof, and the relation of the centers of the cam and its shaft with respect toeach other. 0

Means are provided by the invention for accurately and nicely varying and determining the relation of the cam-to its shaft, and in the embodied form thereof, a pin 53 is fixed in the cam 27 and projects from the inner face thereof into an opening 54, of larger size, formed in 'or passing through diametrally variable or posiof travel, thereby preventing slamming of V left in Fig. 8.

taeaeaa the hub 35. The pin 53-. in. its projecting portion, has formed therethrough an internally threaded opening 55. In this internally threaded opening 55 engages a screw 56, which screw hasa head 57 within, a radially disposed cylindrical opening 58 in the hub 35. The screw 56 is held in station ary position longitudinally with respect to the hub 35, while being free to rotate, and as shown pins 60 and 61 are driven respectively through holes passing through the hub at either side of the cylindrical opem ing 58, said pins projecting for substantially half their diameters into a rounded annular groove 63 formed in the head 57 of the screw 56. The screw is turned in a suitable manner, and preferablyby an angularly shaped recess 6% formed in the top of the head,

When. th screw 56 is turned, it is free to rotate with respect to the hub 35, but is longitudinally fixed relatively to the hub. As the screw 56 is rotated, by reason of its threaded engagement with the pin 53, the

cam proper is moved in the guideway on the face of the hub either to the right or the The central opening of the cam being larger than the shaft 24,, and the opening 5% in the hub being larger than the pin 53, the cam can slide upon the hub and be accurately positioned by the screw, while the cam is held to the hub by the dovetail connection t will thus be seen that the cam has a very wide range of regulation or adjustability with the utmost degree of exactness and nicety, and at the same time the parts are held accurately and fixedly in position, and that the throw of the cam may be varied as desired, the cam roll on the rod at all times being permitted to. follow the periphery of the cam and thus keep the movement of the oscillating ink-feeding roll under absolute control, and nicely regulating and determining its travel toward and its contact with both the fountain roll and the ink drum.

There is thus provided by the invention a cam actuated and governed mechanism for continuously controlling the movement of the fountain feed roller lever on this type of press, and at the same time giving a variable throw or length of travel to the feed roller, so that the throw can be in creased or decreased as the composition roller varies in diameter, thereby maintaining at all times the desired impingement against the fountain roller, and also the desired impingement against the ink drum.

By the screw regulation at the end of rod 21 the location of the ends of the path of travel of the ink feeding roller 3 may be changed and determined, and thereby the degree of contact of the roller 3 with both the ink drum and the fountain roll is controlled despite variations in the size of the ink feeding roller. By the positioning or adjustment of the cam upon its shaft the total extent of the path of travel of the ink feeding roller may be varied, regulated and determined, thereby compensating for variations in the size of the ink feeding roller. The cam roller is designed to follow the cam at all times to continuously control the ink feeding roller and to prevent slamming and loose motion thereof, and by changing the diametral relation of the cam and its shaft the low and high parts of the cam are varied together to maintain this relation while at the same time scouring proper regulation of the location and extent of the path of travel or oscillation of the ink feeding roller.

From all the foregoing it will be understood that a mechanism has been supplied realizing the objects and advantages hcrcin set forth, together with other objects and advantages. It will be further understood that changes may be made from the precise construction shown and described, without departing from the principles of the invention and without sacrificing its chief advantages.

What I claim as my invention and desire to secure by Letters Patent is 1. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting arms therefor, a shaft, a cam encircling said shaft and means for varying the position of the centers of the cam and of the shaft.

2. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting arms therefor, a cam, an arm designed to continuously follow the cam, a shaft on which the cam is mounted, and means for varying the position of the centers of the cam and .of the shaft.

3. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting arms therefor, a cam, an arm designed to continuously follow the periphery of the cam, a. shaft on which the cam is mounted, and means for varying the position of the centers of the cam and of the shaft.

4:. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting arms therefor, a shaft, a hub fixed to rotate with said shaft, a cam carried by said hub,

and means for diametrally varying the position of said cam and hub.

5. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting arms therefor, a shaft, a hub fixed to rotate with said shaft, a peripheral cam mounted on said hub and encircling said shaft, means for diametrally varying the position of said cam and hub, and an arm designed to follow said cam.

6. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting arms therefor, a shaft, a hub fixed to rotate with said shaft, a peripheral cam mounted on said hub and encircling said shaft, means for diametrally varying the position of said cam and hub, and an arm designed to continuously follow said cam.

7. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting arms therefor, a shaft, a hub upon the shaft, a cam carried by and movable upon the hub, and means for moving the cam to position upon the hub and holding the cam in position.

8. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting arms therefor, a shaft, a cam upon the shaft and means for varying the diametrical relation of the cam and shaft.

9. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting Copies of this patent may be obtained for and means for movin the cam diametrally relatively to the shaft and for holding it in the desired position.

10. An inking mechanism for printing shaft.

11. An inking mechanism for printing presses lncluding 1n comblnatlon an ink fountain roller, an ink drum, a feed roller swinging therebetween, and means for swinging said roller, including supporting arms therefor, a rod swinging said arms, means for regulating the angular relation of the rod to the arms, and a cam reciprocating said rod, a shaft for thecam, and means for varying the diametral relation of said cam and its shaft.

12. An inking mechanism for printing presses including in combination an ink fountain roller, an ink drum, a feed roller swinging therebetween, means for swinging said roller, including supporting arms therefor, a rod swinging said arms, means for regulating the angular relation of the rod to the arms including devices for lengthening or shortening the effective length of said rod, and a peripheral cam longitudinally reciprocating said rod, a shaft for the cam, and means for varying the diametral relation of said cam. and its shaft.

In testimony whereof, I have signed my name to, this specification, in the presence of two subscribing witnesses.

WILLIAM M. EVENSEN.

Witnesses:

W. G. FERGUSON, E. O. MEYER. V

Washington, D. 0,.

arms therefor, a shaft, a cam upon the shaft