US2586382A

US2586382A - Fountain interrupter

Info

Publication number: US2586382A
Application number: US131889A
Authority: US
Inventors: Ras Max
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-12-13
Filing date: 1949-12-08
Publication date: 1952-02-19
Anticipated expiration: 1969-02-19

Description

Feb. 19, 1952 RAs 2,586,382

FOUNTAIN YINTERRUPTERI Filed Dec. 8, 1949 MAX RAG B w;M W

=a PMkf ATTorwEvs Patented F eb. 19, 1952 UNITED STATES E ATENT {)FFICE Application December 8, 1949, Serial No. 131,889 In Switzerland December 13, 1948 2 Claims. 1

My present invention relates generally to improvements in rotary printing machine roller inkers and, in particular, to the fountain interrupters thereof.

In prior-art arrangements for partially interrupting the ink feed through duct rollers, the duct-blade is adjustable by means of screws for regulating the ink. The said screws are disposed at short distances from each other on the entire blade width. By tightening certain of these screws, the said blade is so adjusted that the ink feed is interrupted to that portion of the duct roller which shall be rendered ineffective. Such arrangement has the disadvantage that, owing to the resiliency of the duct-blade, the feed also is biased on a duct-roller portion along which the blade is set for supplying the ink quantity necessary for printing. In other words, there is no definite boundary line between the effective ductroller portion and the duct-roller portion set for ineffectiveness. A further drawback is the loss of time brought about by the resetting of the screws when the entire roller length is to be rendered operative again, which causes quite some waste of paper, since, as known in the art, the correct ink transfer is obtained only after the machine has been speeded up.

The said drawbacks are eliminated by my present invention in that the duct roller comprises at least two parts which are mounted partly fixedly and partly loosely on the roller axle, and an arresting device is provided by means of which at least one loose roller portion is prevented from rotating, whereby the ink feed through the said roller portion is interrupted.

One form of my present invention is shown by way of example in the accompanying drawing, in which- Fig. 1 shows a duct-roller in elevation, with parts in section,

Fig. 2 is an axial section, in a larger scale, through the left-hand portion of the duct roller, and

Fig. 3 is a section on the line IIIIII in Fig. 1, also in a larger scale.

A portion 2 of the duct roller is fixed to the duct-roller axle I, while another portion 3 is loosely mounted on the axle. The ink container is designated by 4, and the duct-blade by 5 (Fig. 3). The latter is adjustable by means of screws 6, and acts as supply regulator. A collar 1 is keyed to the axle l at one end of the loose roller portion 3, and has the same diameter as a bearing neck 8 which projects inwardly from the container 4 and is fixed thereto. A clamping ring 9 is mounted on the collar 1 and is engaged to the roller portion 3 through a follower pin lli screw-fastened therein so that, in the position shown of ring 9, the roller portion 3 is coupled 2 to axle I and rotates together with the roller portion 2. Ink thus is feed to the entire width of the duct roller.

When it is desired to interrupt the feed of ink through the roller portion 3, the latter is arrested by slacking the ring 9, displacing it laterally onto the stationary neck 8, as shown by dash-and-dot lines in Fig. 2, and clamping it thereto. As the ring 9 also in this clamped posi-' tion is engaged to the loose duct roller portion 3, the latter is prevented from rotating and does not supply any ink to the blade 5. When it is desired to again supply ink to the entire width of the duct roller, one only needs to again displace the ring 9 and clamp it to collar 1, whereupon the desired quantity of ink again is supplied to the entire width of the roller, since the blade 5 has not been disturbed in its setting.

In a modification of the duct-roller, the righthand end portion thereof also could be formed as a loose roller portion.

What I claim as new and desire to protect by Letters Patent is:

1. In inking apparatus for printing apparatus operating through a roller-and-blade duct, an interrupter arrangement comprising a ductor roller made up of at least two portions at least one of which is loosely mounted on a roller axle, an arresting device arranged at the end of the roller axle supporting the loose roller portion, said device comprising a stationary tubular neck coaxially surrounding said end of the roller axle, a collar rotatably fixed to said axle at one end of said loose roller portion facing the said neck, a ring having clamping means for selectively clamping the said ring either to said collar or said neck, and coupling means fixed to said loose roller portion and rotatably connecting said portion with said ring in both clamping positions of the latter.

2. An interrupter as claimed in claim 1, said collar being keyed to the roller axle and having the same outer diameter as said tubular neck, said clamping rin having a bore therein, said coupling means comprising a follower pin screwfastened in said loose roller portion and extending through said bore of the ring.

MAX RAS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 453,408 Crowell June 2, 1891 631,126 Prouty Aug. 15, 1899 767,125 Scott Aug. 9, 1904 2,154,896 Gibb Apr. 18, 1939