US2190929A - Printing press fountain - Google Patents

Description

Feb. 20, 1940. H. c. BEHRENS PRINTING PRESS FOUNTAIN Filed Aug. 16; 1957 ATTORNEYS.

Patented Fa. 20, 1940 UNITE sires rarest OFFlCE PRENTING PRESS FOUNTAIN Herbert G. lBehrens, Battle Creek, Mich, assignor to Duplex Printing Press Company, Battle Creek. Mich.

Appiication August 16, 1937, Serial. No. 159,240

1 Claim.

This invention relates to improvements in printing press fountains.

particularly to fountains therefor.

brought up for any given column on the matter being printed may be controlled individually. Heretofore several types of adjustment have been used. The simplest one comprises a series of I screws which bear down against the blade which resilient and biased in opposition to the screws. By turning any one screw down it is possible to regulate the spacing of the blade and the roller the individual screws on the blade to effect the adjustment. This is inconvenientand it is de sirable to have meansfor adjusting the screws located at a point remote from the screws such as the end of the roller. screws has been accomplished through the use of bevel gears or worm gearing on the screws operated by rotatable shafts extending out to the end of the roller. These devices are impractical and require considerable skill and experience in oper ation because of the fact that in the rods employed considerable twisting occurs before the rotation of the rod operates the gearing. The amount of this twisting varies with the length of the rods so that it is necessary for an operator to take this into account when adjusting the fountain. More rotation of the rod is required for adjusting the screws at the center of the roller than is required for those at the end of the roller to obtain the same adjustment, and until an operator learns by experience the variations involved, it is most difficult to obtain a satisfactory adjustment. It is obvious that due to lack of space and the expense involved, it is not practicable or desirable to use rods which will not twist on rotation.

The objects of this invention are:

First, to produce fountain controlling means Remote control of these (Cl. 10i--365) which eliminate the difficulties above referred to.

Second, to produce such a device in which the fountain blade is adjusted from a remote point such as the end of the fountain roller.

Third, to provide such a device which is simple 5 and positive in operation and may be made most inexpensively.

Fourth, to produce such a device in which extremely light connecting members may be employed and in which a given amount of adjustment may be made at any point on the blade by a given manipulation of the remote adjusting mechanism.

Fifth, to provide such a device in which ex tremely fine adjustments may be efiected.

Further objects and advantages pertaining to details and economies of construction and. operation will appear from the description to follow. The invention is pointed out in the claim. Preferred embodiments of my invention are illustrated in the accompanying drawing-in which:

1 is a broken front plan view of a printing press inking -fountain embodying my invention.

Fig. 2 is a detail sectional view taken on line 2 2 of Fig. 1.

Fig. 3 isa detail sectional view of a different form of my invention.

Fig. i is a front plan detail view showing the invention of Fig. 3.

Fig. 5 is a front plan view of a still different form of my invention.

Referring to Figs. 1 and 2 of the drawing, l is a fountain inking roller having a spring blade 2 which is conventional. This blade is a spring blade and the resiliency of the blade is such that the blade tends to move away from the roller when unrestrained. The roller is mounted in suitable bearings 3 which have a frame 4 sup porting the bearings and blade. Disposed along the blade, a blade bar 5 is provided carrying a plurality of bearings 6 having mounted therein the plungers 6| which are slidably mounted for axial movement in said bearings. The plungers 6! engage the blade at spaced points and pressure exerted on theblade by the plungers varies the spacing betwen the blade 2 and the roller I.

Pivoted to the blade bar 5 are a plurality of cams l in the form of levers 8 having projecting plunger engaging arms 9. Suitable pivots I!) are provided for these cams and the cams are so disposed that if they are pivoted in a counterclockwise direction as viewed at the left of Fig. 1, pressure is exerted to force the blade 2 closer to the roller I.

adjusting the blade.

A plurality of nuts II are provided and wires l2 screw threaded as at l3 to engage the nuts II are provided. These wires are attached pivotal- 1y each to a cam i at a point M which is spaced from the pivot of the cam. It will be noted that if tension is exerted on these Wires l2 or tension members, the tendency is to urge the cam 1 toward the plunger 8 to force the blade 2 toward the roller i. If the tension is released, the spring of the blade 2 tends to take up any lost motion and the wires or tension members I2 are kept under tension at all times. The nuts I! are located on a suitable board or bracket 15 and are provided with fixed bearings I6 which are so disposed that a rotation of the nut II on the fixed bearing is will exert tension on the tension member or wire 12. It will be apparent that all of the wires l2 may extend to one end of the roller l or that the wires may extend to both ends as is indicated in Fig. 1. are thus conveniently located so that it is unnecessary to reach in along the blade to effect adjustment. It will be apparent, too, that by properly proportioning the cams I it is possible to obtain a very fine adjustment of the plungers B! and that it is possible to employ very fine screw threads as at l3 on the rods l2 to permit extremely fine adjustment of the blade.

in the form of invention shown in Figs. 3 and 4, a blade bar m4 is provided. Cams Nil are pivoted on pivots H83 in a manner similar to the cams l in the form of invention shown in Figs. 1 and 2. The earns 58? diiler from the cams l in that a rounded surface me is provided for An equalizer pad or block I! is provided for each cam. These equalizer pads are spaced along the blade and tend to equalize the pressure exerted by rotation of the cams Mil. Tension members or wires H2 are provided and by exerting tension on the members M2, the cams Mil are rotated so that the blade Hill is forced downwardly against its spring action toward the roller Hill. In the form of invention shown in Fig. 5, the cam 263'! which is substantially identical with the cam Nil is mounted on the blade bar 2% with a All of the adjusting means pivot 2"). The rounded surface 209 of this cam 201' works directly on the spring blade 202 instead of through an equalizer pad or block such as the equalizer pad or block i! of Figs. 3 and 4. A tension member M2 is provided and the exertion of tension on the tension member or wire 2! 2 rotates the cam 20'. forcing the blade 2'02 downwardly.

In the form of invention shown in Figs. 3, 4 and 5, the means for exerting tension on the tension members may be identical with the means shown in Figs. 1 and2.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

In a printing press having a'iountain roll and a spring blade therefor having a roll engaging edge extending longitudinally of the roll and adapted to be adjusted at different points along its length, the combination of a plurality of cams spaced from one another along said blade each pivoted adjacent said blade on an axis perpendicular to the roll engaging edge of the blade and in operative relationthereto to move a portion of the blade in opposition to the spring of the blade on pivoting of the cam whereby the pivoting oi the cam. adjusts that portion of the blade adjacent said cam, a plurality of tension members extending along the roll to the end thereof each having one end pivotally connected directly to one of said cams at a point spaced from its pivot, having its free end at the end of the roll screw threaded to engage a nut, a plurality of nuts each in direct screw threaded engagement with the free end of a tension member, and a panel adjacent the end of the roll hav ing a plurality of thrust bearings one for each of said nuts disposed to hold said nuts against movement from the end of said roll along the roll, whereby screwing of a nut on a tension memher and against its thrust hearing will exert tension on the cam to which the tension member is connected to turn it about its axis in opposition to the spring of the blade to adjust the position of the blade.

HERBERT C. BEHRENS.

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