US3757689A — Adjustable assembly for a dampening roller of an …

Claim 1

Independent Claim 412 words

An adjustable bearing assembly for a dampening roller of an offset printing press in which the dampening roller applies moisture to a plate cylinder when in engagement therewith and is supplied with moisture by a moisture supply roller driven at the peripheral speed of the plate cylinder and rotatable about a spatially stationary axis, said bearing assembly comprising in combination: a plate cylinder; a moisture supply roller, said plate cylinder and said supply roller being rotatable about mutually parallel and spatially fixed axes; a dampening roller having an elastic and non-absorbing cover; bearing means supporting said dampening roller rotatable about an axis parallel to the rotational axes of the plate cylinder and the moisture supply roller, said bearing means comprisng a bearing plate, a bearing sleeve mounted on the bearing plate and including a bearing hole eccentrically disposed with respect to the center axis of the sleeve, said sleeve being rotatably fitted in said bearing plate for adjustment purposes and said bearing plate being pivotal about said sleeve, and a stationarily mounted pivot pin received in said eccentric hole whereby pivoting of the bearing plate about the sleeve corresponding varies the spatial position of the rotational axis of the dampening roller with reference to the rotational axes of the plate cylinder and the moisture supply roller; rotatable mounting means having a center axis, said mounting means supporting said dampening roller on an axis eccentric with reference to said center axis; setting means coacting with said mounting means for rotating the same, rotating of the mounting means laterally displacing the rotational axis of the dampening roller with reference to the rotational axes of the plate cylinder and the moisture supply roller into a position in which the dampening roller is spaced apart from the moisture supply roller but in contact with the plate cylinder and a position in which the dampening roller is in contact with the plate cylinder and the moisture supply roller; and actuating means coacting with said bearing plate for selectively pivoting the same about an axis parallel to the axis of the plate cylinder in a position in which the dampening roller is in engagement with the plate cylinder and the moisture supply roller or in a position in which the dampening roller is spaced apart from the plate cylinder but in engagement with the moisture supply roller or in a position in which the dampening roller is spaced apart from the plate cylinder and the moisture supply roller.

Claim 2

Dependent Claim 412 words

An adjustable bearing assembly for a dampening roller of an offset printing press in which the dampening roller applies moisture to a plate cylinder when in engagement therewith and is supplied with moisture by a moisture supply roller driven at the peripheral speed of the plate cylinder and rotatable about a spatially stationary axis, said bearing assembly comprising in combination: a plate cylinder; a moisture supply roller, said plate cylinder and said supply roller being rotatable about mutually parallel and spatially fixed axes; a dampening roller having an elastic and non-absorbing cover; bearing means supporting said dampening roller rotatable about an axis parallel to the rotational axes of the plate cylinder and the moisture supply roller, said bearing means comprisng a bearing plate, a bearing sleeve mounted on the bearing plate and including a bearing hole eccentrically disposed with respect to the center axis of the sleeve, said sleeve being rotatably fitted in said bearing plate for adjustment purposes and said bearing plate being pivotal about said sleeve, and a stationarily mounted pivot pin received in said eccentric hole whereby pivoting of the bearing plate about the sleeve corresponding varies the spatial position of the rotational axis of the dampening roller with reference to the rotational axes of the plate cylinder and the moisture supply roller; rotatable mounting means having a center axis, said mounting means supporting said dampening roller on an axis eccentric with reference to said center axis; setting means coacting with said mounting means for rotating the same, rotating of the mounting means laterally displacing the rotational axis of the dampening roller with reference to the rotational axes of the plate cylinder and the moisture supply roller into a position in which the dampening roller is spaced apart from the moisture supply roller but in contact with the plate cylinder and a position in which the dampening roller is in contact with the plate cylinder and the moisture supply roller; and actuating means coacting with said bearing plate for selectively pivoting the same about an axis parallel to the axis of the plate cylinder in a position in which the dampening roller is in engagement with the plate cylinder and the moisture supply roller or in a position in which the dampening roller is spaced apart from the plate cylinder but in engagement with the moisture supply roller or in a position in which the dampening roller is spaced apart from the plate cylinder and the moisture supply roller.

Claim 3

Dependent Claim 205 words

The assembly according to claim 1 wherein said actuating means comprise a two-arm lever, one arm of said lever coacting with said bearing plate for pivoting the same, and wherein said actuating means comprise control means coacting with the other arm of the lever for pivoting the same in one rotational direction through successive predetermined angles by operation of the control means, pivoting of the lever through a first predetermined angle and in said one rotational direction causing turning of said bearing plate into a pivotal position in which the dampening roller is moved from the position engaging both the plate cylinder and the moisture supply roller into the position engaging the moisture supply roller only, pivoting of the lever through a further predetermined angle and in the same rotational direction causing pivoting of said bearing plate into the position in which the dampening roller is separated from both the plate cylinder and the moisture supply roller, and pivoting of the lever successively through both said angles but in opposite rotational direction causing pivoting of said bearing plate through pivotal positions in which the dampening roller is successively returned first into coaction with the moisture supply roller only and then with the plate cylinder also.

Claim 4

Dependent Claim 74 words

The assembly according to claim 2 wherein said control means comprise a rotatable shaft and a cam member secured upon said shaft and having differently shaped peripheral camming surfaces, said other arm of the lever being biased into engagement with said camming surfaces to follow the same as the cam member is turned and thus correspondingly pivoting the lever, and operating means coupled to the cam member for turning the same in either direction.

Claim 5

Dependent Claim 229 words

The assembly according to claim 3 wherein said operating means comprise a nose radially protruding from said shaft for rotation in unison therewith, a first and a second solenoid means each having a movable core biased to extend into the path of said nose when the respective solenoid means is deenergized thereby preventing rotation of the shaft and thus of the cam member, the core of the first solenoid means being spatially correlated with the nose and one of the camming surfaces of the cam member and the core of the second solenoid means being spatially correlated with the nose and the other camming surface, energization of the solenoid means causing withdrawl of the cores from the path of the nose whereby the state of energization of the solenoid means and said camming surfaces control pivoting of said lever through said predetermined angles, and control circuit means including a normally open switch means and a timer means, closing of said switch means causing energization of the first solenoid means and of the timer means and energization of the timer means causing energization of the second solenoid means after a predetermined period of time whereby energization of the solenoid means via the switch means and the timer means releases the shaft for turning the cam member into the angular positions causing pivoting of the two-armed lever through said predetermined angles.

Claim 6

Dependent Claim 162 words

The assembly according to claim 1 wherein said setting means comprise a spring actuated pin being guided in said bearing plate and being releasable by means of a knob and coacting with setting holes disposed in said mounting means; said mounting means comprising a sleeve being rotatably mounted in said bearing plate and having a bearing hole eccentrically disposed with respect to the center axis of said sleeve and carrying the axis of the dampening roller; said setting holes being circumferentially disposed on said sleeve, and rotation of said sleeve from one engaging position of the pin in one hole to the other engaging position of the pin in the other hole displacing the axis of the dampening roller from a position in which thE dampening roller is in contact with the plate cylinder and the moisture supply roller in a position in which the dampening roller is in contact with the plate cylinder but spaced apart from the moisture supply roller.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-09-10	1977-03-12	1977-09-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-09-10	1981-03-12	1981-09-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-09-10	1985-03-12	1985-09-11	$7700.00	Window Closed / Lapsed

Adjustable assembly for a dampening roller of an offset printing press

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag