US1262709A - Ink-transferring mechanism. - Google Patents

Description

E. J. SM|TH. INK TRANSFERRING MECHANISM. APPLICATION FILED JUNE 19, 1916.

1,262,709. v Patented'Apr. 16, 1918;

IIIIIIIIII///%- D STATES rarnnronnron ERNEST JAMES SMITH, OF CHICAGO, ILLINOIS, ASSIGNOB TO THE GOSS PRINTING IRESS COMFANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

mx-mansrnnmno mncnnmsmi Specification of Letters Patent.

Pastas Apr. re, 1918.

Application filed June 19, 1916. Serial'lto. 104,466.

' a subject of the King of England, and a resident of Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Ink-Transferring Mechanisms, of which the following is a specification, reference being had to the accompanying drawing.

My invention relates to ink transferring mechanisms for printing presses, comprising one or more oscillating rollers; and it has for one of its objects the provision of a new andimproved form and arrangement of parts by reason of which such a mechanism can be operated at an effectively high speed without undue wear and strain upon the timing of the rollers whereby the time of rest between operative movements of the rollers or the period otherwise occupied between successive enga ements with the fountain-roller and the i 'ng cylinder may be varied, relative to the period during which each roller in turn is in operative engagement. 1 It is another object of my invention to improve devices of this type in sundry details hereinafter pointed out. The pre-' ferred means by which Ihave accomphshed my several objects are illustrated in the drawings and 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 r Figure 1. is a diagrammatic view showing a part of a press embodying my improved inking arrangements;

Fig. 2 is a cross-sectlon taken on line 2-2 of Fig. 1; and

Fig. 3 is a cross-section taken on line 3 -3 of. Fig. 1;

Referring to the several figures of the drawings in w ich corresponding parts are indicated by he same reference characters 16 indicates the framework of a press havingmounted. thereon a form cylinder 11, an inking cylinder 12, form rollers 13-14, and p vibrating rollers 15 of any suitable type.

An inking roller 16 mounted upon a shaft 17 is adapted to be driven by a worm-gear 18 meshing with a worm 19 mounted u on a shaft 20 driven by any suitable mechanism at the desired rate of rotation. Ink is adapted to be delivered upon the cylinder 16 by 3 a nozzle 21 having a supply of ink fed thereto through the pipe 22 from any suitable source. A scraper-blade 23 engages the roller 16, being adapted to be adjusted by any suitable means, as is well understood in the art. An auxiliary scraper 24 held in engagement with the roller 16 through the medium of a spring 25 is employed for scraping an lint and surplus ink from the surface 0 the roller. .A. trough 26 receives the surplus ink from the roller 16 from which it is conveyed by a pipe 27 to any suitable point. I

A shaft 28 extending between the inking roller 16 and the inking cylinder 12 has fixedthereon near each end a head 29. Revolubly mounted between the heads 29 by means of two shafts 3031 are two oscillating rollers 3233, respectively, so positioned relative to each other and relative to the roller 16 and the cylinder 12 that they are capable of oscillating between the roller 16 and the cylinder, one roller 32-33 being always in fixed upon the shaft 17, the outer end of the arm 34 being connected by means of a link 35 with an arm- 36revolubly mounted upon the axis of the cylinder 12. Revolubly mounted upon the same axis and movable relative to the arm 36 are two cam members 3738, being held in adjustable position relative to the arm 36 by means of a screwthreaded pin 39 engaging threaded lugs 40-41 upon said cam members, respectively, the pin 39 being held against movement longitudinally of itself relative to the arm 36 by means of a double yoke 42 carried by the arm. As is best shown in Fig. 1, the outer ends of the cam members 37-38 overlap each other, serving to provide a high cam portion 43 upon the cam member 38, an intermediate cam portion 44 at' the end of the member 37 and a low cam portion 45 on the member 37 adj acent to the intermediate portion 44. An arm 46 fixed upon the shaft 28 is adapted to engage the cam members 37 and 38, the engagement being efi'ected in the construction shown throughthe' medium of a roller 47 revolubly mounted upon the-free end of the arm 46. A. spring 48 tends to hold the arm 46 turned to the limit of its movement in counterclockwise direction in Fig. 1. K

Upon the rotation of the shaft 17 through the medium of the' worm-gear 18, the arm 36 is reciprocated. about its axis carrying with it cam members 3738. When the arm 36 is moved downward from its highest position, the highest cam portion 43 engages the arm 46 and moves it to the right until the roller 33 engages the roller 16 and the roller 32 engages the cylinder 12, as shown in Fig. 1. This position is maintained also during the first part of the upward movement of said arm 36. When in the downward movement of the arm 36 the roller 47 is brought into contact with the intermediate cam portion 44, the rollers 32-33 are moved a short distance in counterclockwise direction in Fig. 1, serving to hold both rollers out of operative engagement. When the roller 47 passes from the intermediate cam section 44 to the low cam section 45 at the end of the downward stroke of the arm 36, the roller 33 is moved into engagement with. the cylinder 12 and the roller 32 is moved into engagement with the roller 16. Upon the reverse movement of the arm 36, the roller 32 is moved again out of engagement with the roller. 16 and into en gagement with the cylinder 12 while the roller 33 is moved out of engagement with the cylinder 12 and again into engagement with the roller 16. Upon each movement of the rollers 3233, the amount of time during which they are held out of operative engagement depends upon the effective length of the intermediate cam portion 44. By an adjustment of the screwthreaded pin 39, the efiective length of the intermediate cam portion 44 can be varied, the screw-threads being such as to move both cam members together. toward the arm 36 or together away from the arm.. The arrangement and proportions are such that in all adjustments of the cam members 3738 the efi'ective portion of the intermediate cam portion 44 remains centered relative to the arm 36.

By the use of two oscillating rollers 32-33 adapted to be moved in opposite di-- rections by the actuating mechanism so as to act alternately for applying ink from the roller 16 to the cylinder 12, I am enabled to increase the number of applications of ink to the cylinder within a given time very materially as compared with a construction employing only a single oscillating roller,

'nacaroe this result being attained without an excessive speed of operation of the oscillating means.

What li claim as my invention and desire to secure by Letters Patent, is

1. In a printing press, the combination of an inking roller, means for supplying ink thereto, an inking cylinder revolubly mounted adjacent thereto, a pair of oscillating rollers adapted to be swung into and out of contact with, said inking roller and said cylinder on opposite sides of their line of centers, and means for swinging said oscillating rollers adapted to hold each roller in intermediate position upon each movement in each direction.

2. In a printing press, the combination of an inking roller, means for supplying ink thereto, an inking cylinder revolubly mounted adjacent thereto, a pair' of oscillating rollers adapted to be swung into and out of contact with said inking roller and said cylinder on opposite sides of their line of centers, and means for swinging said rollers adapted to stop the oscillating rollers in intermediate posltion upon each movement in each direction;

3. In a printing of an inking device, means for supplying ink thereto, an inking cylinder revolubly mounted adjacent thereto, an oscillating roller adapted to be swung between said first-named two members, and cam means for controlling the position of said roller, comprising a high portion adapted to hold said roller in contact with one of said members, a low portion adapted to hold'said roller in contact with the other member, and an intermediate portion adapted to hold the roller out of contact with both of said members.

4. In a printing press, the combination of an inking device, means for supplying ink thereto, an inking cylinder revolubly mounted adjacent thereto, an oscillating roller relative to the time during which it is in op erative contact with said members.

5. In a printing press, the combination of an inking device, means for supplying ink thereto, an inking cylinder revolubly mounted adjacent thereto, an oscillating roller adapted to be swung between said press, the combination inking device and said cylinder, cam means for controlling the position of said roller,- comprising a cam member provided with a high portion adapted to hold said roller swung to the limit of its movement in one direction, and a second cam member provided" with a low portion adapted to hold the roller swung to the limit of its movement in the opposite direction and with an intermediate cam portion adapted to hold the roller in an intermediate position,and means for adjusting one of said cam members relative to the other for varying the effective length of the intermediate portion of said cam.

6. In a printing press, the combination of an inking device, means for supplying ink thereto, an inking cylinder revolubly mounted adjacent thereto, an oscillating roller adapted to be swung between said inking device and said cylinder, cam means for controlling the position of said roller, comprising a cam member provided with a high portion adapted to hold said roller swung to the limit of its movement in one direction, and a second cam member provided with a low cam portion adapted to hold the roller swung to the limit of its movement in the opposite direction and with an intermediate cam portion adapted to hold the roller in an intermediate position,- means for actuating said cam for swinging said roller, and means for adjusting said cam members relative to said actuating means adapted to vary the efi'ective length of said intermediate cam portion.

7. In a printing press, the combination of an inking device, means for supplying ink thereto, an inking cylinder revolubly mounted adjacent thereto, an oscillating roller adapted -to be swung between said inking device and said cylinder, cam means for controlling the position of said roller,comprising a cam member provided with a high portion adapted to hold said roller swung to the limit of its movement in one direction, and a second cam member provided with a low cam portion adapted to hold the roller swung to the limit of its movement in the opposite direction and with an intermediate cam portion adapted to hold the roller in an intermediate position,means for actuating said cam for'swinging said roller, and means for adjusting sald cam members in unison relative to said actuating means adapted to keep said cam members in operative centered position relative to said actuating means and to vary the eflective length of the intermediate cam portion.

8. In a printing press, the combination of an inking device, means for supplying ink thereto, an inking cylinder revolubly mounted adjacent thereto, an oscillating roller adapted to be swung between said inking device and said 0 linder, cam means for controlling the position of said roller,comprising a cam member provided with a high portion adapted to hold said roller swung to the limit of its movement in one direction, and a second cam member provided with a low cam portion adapted to hold said roller swung to the'limit of its movement in the cylinder on opposite sides of their line of centers, cam means for controlling the position of said rollers,comprising a swingingly-mounted cam member provided with a high cam portion adapted to hold said rollers swung to the limit of its motion in one direction, and a second swinginglymounted cam member provided with a low cam portion adapted to hold said rollers swung to the limit of their motion in the opposite direction and with an intermediate cam portion adapted to hold said wherein an intermediate position,-a swinginglymounted arm, adjustable connections between said cam) members and said arm adapted to adjust said members toward and from each other in centered operative position relative to said arm for varying the effective length of the intermediate cam portion, a crank driven in timed relation to the speed of the first-mentioned inking roller, and connections between said crank and said arm for reciprocating said arm.

10. The combination with an inking cylinder, and an inking roller, of anink transferring device, comprising a rocking support, rollers carried thereby and movable oppositely by the rocking thereof alternately into engagement with said inking roller and said cylinder respectively, cam means adapted by reciprocatory movement to rock said support, and means -operated by the rotation of said inking roller for reciprocating said cam means:

ERNEST JAMES SMITH.

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