US1819329A - Ink roller brake for printing presses - Google Patents

Description

Aug. 8, 1931. F. E. HUGHES 1,819,329

INK ROLLER BRAKE FOR PRINTING PRESSES Filed May 25, 1929 Inventor Eederick E Hug/la s l atentecl Aug. 18, 1931 r I STATES PATENT OFFICE.

FREDERICK E. HUGHES, F TORONTO, ONTARIO, CANADA INK ROLLER BRAKE FOR PRINTING IPRESSES Application filed May 25, 1929. 'Serial' 1T0. 366,021.

The principal objects of the invention are in a flange ring 12, formed in half sections to overcome the diiiiculty of unequal distriwhichis secured by the screws 13 to the boss bution of ink on the inking plate of print- 14 of the inking roller operating arm 15 ing presses and to provide a simple form of which is a part of the standard press strucdevice which may be readily attached to the ture and carries the roller in its movement to 55 press and which is very reliable and positive and-from the fountain roll 16 which is arin its operation. ranged on the ink font 17, said arm 15 be- The principal feature of the invention ing pivoted on the frame 18 and operated consists in the novel construction and arby the link rod 19.

rangement of a brake member operatively A pair of. semi-circular members 20' and 00 connected with the inking roller whereby 21 hinged together encircle the brake drum said roller is brought into contact with the 1 between its flanges and the inner faces fountain roll with a new point of contact at thereof are preferably provided with a suiteach movement of the roller between the able friction lining 22.

fountainand th inking l t The-hinge pin 23 connecting the members 5 In the drawings, Figure 1 is an elevational and 21 extends through the hinge ends of view of a portion of a printing press showing a pair of U-shaped members 24 and 25 and a part of. the frame, the ink reservoir, the hardened steel rollers 26 and 27 aremounted fountain roll and the improved brake mechin said U-shaped members on the pins 28 and 20 anism. 29 extending transversely therethrough, the 70 Figure 2 is an enlarged perspective view. peripheries of the rollers extending beyond of the brake device. the faces ofthe U-shapedmembers farthest Figure 3 is'a sectional view'of the brake from the members 20 and 21. mechanism taken on the line 33 of Figure A bracket 30 is rigidly mounted on the 25 2. frame 18 of the press and is formed with an '75 Y The inking mechanism of certain types of upwardly extending arm 31 having a curved printing presses has for many years been face 32 which is concentric to the pivot 33 subject to a defect which many have enof the arm 15.. Depressions 34 and 35 are deavoured to overcome by various devices to formed at the upper and lower ends of the 30 check the spinning of the ink roller as it face 32. leaves the inking plate. The brake members 20 and 21 are each In the device herein shown a small cylinformed with a lug 20 and 21 in which are drical brake drum 1 is rotatably mounted threaded the setscrews 36 and 37 provided on the shaft 2 of the inking roller 3 and it withleck nuts 38 and 39 'toengage said lugs.

35 is preferably formed with side flanges land A. compression spring 40 is arranged be- I a hole 5 therethrough. A clamp 6 is secured tween the outer free ends of the brake memon the end of the shaft 2 and is provided 'bers 20'and 21,being seated in recesses in said with a spring button latch 7 which enters 'ends'and said spring tends to force the memthe hole 5 and thus causes the drum to turn bers 20 and 21 apart so that they will not 40 with the shaft. The head of the button 7 grip-the drum arranged therebetween. is formed with a notch 8 in its periphery and The set screws are adjusted so that the a pin 9 secured in the clamp passes through heads thereof engage the outward sides of the notch when the latch is locked to the the U shaped members 24 and 25 and said drum and said pin holds the latch disenmembers, when the rollers-26 and 27 are in 45 gaged by pulling the latch outwardly and engagement with the concentric face 32 of the turning same so that the pin engages'the arm 31, force thebrake members 21 and 22 underside of the head. together. to grip the brake drum to hold the The drum 1 is provided with a boss 10 on ink roller from rotating. When either of the its inner side which is formed with an aunurollers 26 or 27 drop into the depression 34 50 lar groove 11 and said boss is rotatably held and 35 the pressure against the brake mem- 109 roller 3 only a part of a revolution.

bers is relieved and the spring 40 immediately spreads them apart to release the braking grip and allow the ink roller 3 to rotate.

In the operation of this device, the arm swings downwardly on its pivot to bring the ink roller 3 into contact wit-h the roll 16 and just prior to the roller 3 engaging the roll 16, the roller 27 on the U-shaped member drops into the lower depression on the arm 31 releasing the brake and allowing the roller 3 to turn with'the fountain roll. The arm 15 then swinging upward carries the roller 3 away from the roll 16 and the roller 27 is lifted out of the depression 35 and the brake is applied and the roller 3 is held from rotation until the arm 15 approaches the upward limit of its movement and the roller26 of the upper U-shaped member drops into the depression 34 again releasing the brake so that the ink roller 3 will rotate freely when engaged by the reciprocatin ink'distributor plate, which is not shown as its structure and arrangement are well known.

The rotation of the ink roller in its engagement with the inking plate is uniform and as the movement of the roller is positively arrested as the roller leaves the ink plate it is held in a fixed position till it engages the slowly rotating fountain roll which turnsrtfiie 1s operation thus advances the ink roller the 7 distance of its travel in rotation with each contact with the fountain roll which ensures the ink roller being brought into contact at a different point in its periphery at each stroke of the ink roller arm, consequently the ink will be applied to a different part of the roller at each stroke and a uniform distribution will be effected.

The clamp member with its latch enables the releasing of the roller 3 for cleaning by simply lifting the latch and turning it and by turning the latch until the pin 9 slips into the notch 8 the brake is again in operation.

What I claim as my invention is 1. An ink roller brake for printing presses, comprising, an oscillating roller, means carried with said roller adapted to be operated to close around the roller shaft to arrest the rotative movement thereof, and means for operating said arresting means periodically.

2. In a printing press, the combination with the oscillating inking roller, of relatively movable braking members carried with the inking roller adapted to free the inking roller at the ends of its oscillating movement and hold it from'rotation during the remainder of its movement.

3. In a printing press, the combination with the frame, the inking roller and the pivotal oscillating support therefor, of relative- I ly movable braking members carried by said oscillating roller support for holding the ink- YRS ing roller from rotation, and means arranged on the frame adapted to operate said relatively movable members individually and to release same at the ends of the oscillating movement.

4. In a printing press, the combination with the inking roller and oscillating means for carrying same, of a brake mechanism comprising an articulated member mounted on said oscillating means adapted to arrest the rotation of the inking roller, and means adapted to operate and release the movable portions of said articulated brake member at the ends of the oscillating movement of the inking roller to control the rotation of said roller. I

5. In a printing press, the combination with the frame, the inking roller and the pivotal oscillating support therefor, of a pair of hinged braking members adapted to arrest the rotation of the inking roller, a rigid bracket member having a surface concentric with the pivot of the inking roller support, and members operatively connected with said hinged braking members and engaging said concentric surface to apply the brake to arrest the rotation of the inking roller.

6. In a. printing press, the combination with the frame, an oscillating member pivoted on the frame, and an inking roller rotatably mounted in said oscillating member, of-

a brake drum mounted on said inking roller, a brake member encircling said drum, a pair of arms pivotally mounted and operatively connected with said brake, rollers mounted on each of said arms, a rigid bracket havinga concentric surface adapted to engage said rollers and apply the brake to arrest the rotation of the inking roller, said arms releasing said brake at the upper and lower extremities of the oscillating movement.

7 In a printing press, the combination with the frame, an oscillating member pivoted on the frame, and an inking roller rotatably mounted in said oscillating member, of a brake drum mounted on said inking roller, a pair of brake arms hinged together and extending around said drum, a spring holding the free ends of said arms apart, a pair of members pivotally mounted on the hinge connection of said brake members, a roller mounted on each of the latter members, set screws mounted in the brake members engaging the pivotal members connected thereto, and a fixed member having a concentric surface adapted to engage said rollers to operate said pivotal members to force the brake mem bers into braking engagement with the drum, said fixed member having depressions at the ends to release the brake.

8. In a printing press, the combinationwith the frame, an oscillating member pivoted on the frame, and an'inking rol er rotatably mounted in said oscillating member,

of a brake drum mounted on said inking roller, a clamp secured to the inking roller shaft, a spring latch on said clamp engaging said brake drum to carry it with the ink roller, a brake engaging said drum, and means for operating said brake to arrest the rotation of the inking roller during the maj or portion of the oscillating movement and releasing it at the ends.

9. In an ink roller brake for printing presses comprising the combination with the ink fountain and the ink distributing mechanism, of an ink roller, means for carrying said roller from the ink fountain to the ink distributor, and means carried with the ink roller aoapted to arrest the roller from rotation as it leaves the distributor and hold same from rotation until it approaches the ink fountain to effect the contact of the ink roller with the fountain at a different point in its circumference following each oscillating movement.

10. In a printing press, the combination with the oscillating inking roller, of relatively movable braking members comprising pivotally connected members carried with the inking roller adapted to free the inking roller at the ends of its oscillating movement and hold it from rotation during the remainder of its movement.

11. In a printing press, the combination with the frame, an oscillating member pivoted on the frame, and an inking roller rotatably mounted in said oscillating member, of a brake drum mounted on said inking roller, a pair of brake arms hinged together and extending around said drum, and supported thereby in a floating manner, and means for operating saidbrake arms to grip or release said brake drum during its oscillating movement.

12. In a device of the class described, in combination, a rotatable shaft mounted to oscillate bodily between two end positions, non-rotatable means normally loosely carried by said shaft, and means for tightening said first named means upon said shaft during its bodily movement between said end positions to control the rotation of said shaft.

13. In a device of the class described, in combination, a rotatable shaft mounted to oscillate bodily between two end positions, and means loosely carried by a said shaft When occupying said end positions and and adapted to control the rotation thereof during its bodily movement between said end positions.

14. In a device of the class described, in combination, a rotatable shaft mounted to oscillate bodily between two end positions, means loosely carried by said shaft when occupying said end positions, and means for causing said first named means to prevent free rotation of said shaft during its bodily movement between said end positions.

15. In an inking mechanism for printing presses or the like, which includes a fountain roller, a member to be inked, a ductor roll arranged to oscillate bodily between said fountain roller and said member and to rotate in contact therewith, and an axle for said ductor roll, a member loosely carried by said axle when said ductor roll is in contact with said fountain roller or said 1ne1nher to be inked and adapted to prevent rotation of said axle and ductor roll when they are in intermediate positions.

16. In an inking mechanism for printing presses or the like, which includes a fountain roller, a member to be inked, and a ductor roll mounted on a shaft for bodily oscillation between said fountain roller and said member and for rotation in contact therewith, in combination, a member loosely carried by said shaft when said ductor roll is in contact with said fountain roller or said member to be inked, and means for causing said member carried by said shaft to prevent rotation of said shaft during bodily oscillation thereof.

FREDERICK E. HUGHES.

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