Spray dampener for rotary press

Claim 2

In a rotary printing press, a foutain system for uniformly applying wetting liquid to the printing plates comprising means directing wetting liquid on a roller of the printing press, including a housing (9); a plurality of spray means (10) to spray wetting liquid, located in the housing, each spray means providing a divergent stream of wetting liquid in sheet form directed towards the roller to be wetted and impinging thereon along an impingement line, the housing being formed with openings (16) through which the sheet of spray from the spray means may pass, said spray means being secured in the press in axially fixed position with respect to the roller axis and movable in a plane transverse with respect to said axis to change the impingement line of the spray on the roller and hence the axial coverage of the sheet of spray on the roller from any one spray means.

Claim 3

Press according to claim 1, wherein the spray means comprises nozzles (10).

Claim 4

Press according to claim 1, wherein the spray means is swingably movable with respect to the axis of the roller (8) to be wetted.

Claim 5

Press according to claim 1, wherein the spray means is movable towards and away from the axis of the roller (8) to be wetted.

Claim 6

Press according to claim 1, wherein the spray means are secured in the housing and the said housing (9) is movably secured in the press to rock the housing and hence the spray means in said plane.

Claim 7

Press according to claim 1, further comprising reciprocating operating means (19, 20) reciprocating the spray means with respect to the roller (8) to be wetted over a distance small with respect to the lateral extent of the sheet of spray upon impingement of the roller.

Claim 8

In a rotary printing press, a fountain system for uniformly applying wetting liquid to the printing plate comprising means directing wetting liquid on the roller of the printing press including a housing (9); a plurality of spray means (114, 126) to spray wetting liquid, located in the housing in axially fixed position with respect to the roller, each spray means providing a divergent spray (118) of wetting liquid in sheet form directed towards the roller to be wetted and impinging thereon along an impingement line, the housing being formed with openings through which the sheet of spray from the spray means may pass; and a movable reciprocating diaphragm slider (121) formed with openings (122) therein, the diaphragm slider reciprocating in a direction parallel to the axis of the roller to be wetted to change the impingement line of the spray on the roller passing through the openings in the housing, and hence the axial coverage of the sheet of spray on the roller from any one spray means.

Claim 9

In a rotary printing press, a fountain system for uniformly applying wetting liquid to the printing plate comprising means directing wetting liquid on the roller of the printing press including a housing (9); a plurality of spray means (114, 126) to spray wetting liquid, located in the housing in axially fixed position with respect to the roller, each spray means providing a divergent spray (118) of wetting liquid in sheet form directed towards the roller to be wetted and impinging thereon along an impingement line, the housing being formed with openings through which the sheet of spray from the spray means may pass; and a movable reciprocating diaphragm slider (121) formed with openings (122) therein, the diaphragm slider reciprocating in a direction parallel to the axis of the roller to be wetted to change the impingement line of the spray on the roller passing through the openings in the housing, and hence the axial coverage of the sheet of spray on the roller from any one spray means.

Claim 10

Press according to claim 7, further comprising adjustment slider means (120) secured to the diaphragm slider (121) to fine-adjust the spray pattern from the spray means (114, 126) passing through the diaphragm openings (122) in the diaphragm slider (121).

Claim 11

Press according to claim 7, further comprising electric motor drive means (123) and means connecting the motor to the diaphragm and changing rotation of said drive means to reciprocation of said diaphragm.

Claim 12

Press according to claim 7, wherein the diaphragm slider extends over the entire length of the roller (8) to be wetted.

Claim 13

Press according to claim 7, comprising means coupled to a rotating drive element of the printing press and providing a reciprocating output, the reciprocating output of said means being coupled to the diaphragm slider to move the slider in reciprocating motion.

Claim 14

Press according to claim 7, wherein the liquid directing means including said housing comprise lightweight material and are removably located in the press, to permit ready re-location of said wetting liquid directing means in the press and accomodate different directions of rotation of the press.

Claim 15

Press according to claim 7, wherein the wetting liquid directing means including said diaphragm are removably located in the press.

Claim 16

Press according to claim 7, wherein the spray means comprises nozzles.

Claim 17

Press according to claim 7, wherein the spray means comprises throwers (126).