US2026480A

US2026480A - Rotary printing machine

Info

Publication number: US2026480A
Application number: US522914A
Authority: US
Inventors: Lougee Frederick Grafton
Original assignee: Irving Trust Co
Current assignee: Irving Trust Co
Priority date: 1930-03-21
Filing date: 1931-03-16
Publication date: 1935-12-31
Anticipated expiration: 1952-12-31

Description

1935? F. G. LOUGEE ROTARY PRINTING MACHINE Filed March 16, 1931 2 Sheets-Sheet l INVENTOR Dec. 31, 1935. LOUGEE 2,026,480

ROTARY PRINTING MACHINE Filed March 16, 1931 2 Sheets-Sheet 2 INVENTOR Patented Dec. 31, 1935 PATENT OFFICE ROTARY PRINTING MACHINE Frederick Grafton Lou signor to R. Hoe & Irving Trust Company,

gee, London, England, as Co.

Inc., New York, N. Y. permanent trustee Application March 16, 1931, Serial No. 522,914 I ,In Great Britain 7 Claims.

This invention relates to improvements in rotary printing machines.

Under the high speed of operation of modern printing presses, which may deliver, say 60,000 copies per hour, it has been found that the atmosphere of the press room becomes laden with atomized or finely divided ink mist or vapour, which renders working conditions unpleasant and results in the smutting of the products. I believe that the formation of this mist or vapour is due to the high speed of rotation of the usual ink distribution drums, and of the distributing and forme rollers, which, in their rotation, fling oif particles of ink. Any further tendency to increase the speed of operation will, of course, intensify the difiiculties of Working.

The object, of the present invention is to provide means which will prevent or minimize the diffusion of the ink mist or vapour.

According to the present invention there are provided means which will confine or substantially confine the ink mist or vapour within the proximity of the inking mechanism or mechanisms of the printing machines.

The invention can be carried into eiTect in various ways. For example, a suction or pressure air apparatus may be provided for directing the ink particles flung ofi the drum and rollers to a receptacle from which the accumulated ink is withdrawn and returned to the usual ink reservoir, preferably through a filter.

In the accompanying drawings which illustrate the invention, Figure 1 is an end view and Figure 2 a detail view at right angles to'Figure 1.

I is a receptacle formed of a box or guard located adjacent and co-extensive with the ink distribution drum 2 and rollers 3, that face or double wall of the box adjacent the drum and rollers being perforated at 4 as shown in Figure 2. The box I is hinged at 5 to the frame of the machine. The interior of the box is placed in communication through a conduit 6 with an air suction generating plant, not shown. 'The ink particles flung ofi the drum 2 and rollers 3 are then sucked through the perforations 4 into the box I, whence the ink passes downwardly through the conduit 5 wherein a partialvacuum is maintained by any suitable means, to a separator (not shown) in communication with the ink reservo1r.

I is a box which is similar to the box I and is located on that side of the distribution drum 2 remote from the rollers 3. The box 1 is formed in two parts which are hinged together at 8 and 7 constitutes part of the usual guard which is March 21, 1930 hingedly mounted to provide access to the distribution drum.

The down-draft principle herein employed for collecting the ink particles not only prevents a considerable loss of ink through evaporation and contact with surfaces necessarily employed with systems employing overhead hoods, but in addition, effects its object with the utmost simplicity of means which, as illustrated, may be secured to or form an integral part of the walls of the 10 enclosing receptacle I. The ink particles by the present down-draft method also will travel or return by the shortest path possible to the ink reservoir or its separator (not shown).

What I claim is:-

1. In a rotary printing machine including an ink reservoir and ink distributing mechanism, means for confining ink mist within the proximity of the ink distributing mechanism; said means including a receptacle hingedly connected to the printing machine and enclosing the ink distributing mechanism, there being perforations formed in the said receptacle for drawing off said ink mist and collecting same in other means connected to the receptacle.

2. In combination, a rotary printing machine having ink distributing rollers, a double walled guard adjacent said rollers, and a drain conduit connected to the guard in which a partial vacuum is maintained; said guard being perforated on the side adjacent the ink rollers.

3. In a rotary printing machine including an ink distributing apparatus having rotary components, a receptacle adjacent the ink distributing apparatus, an ink conveying conduit communicating the receptacle with a partial vacuum the receptacle being substantially coextensive with the ink distributing apparatus and provided with a substantially coextensive perforated wall positioned towards the ink distributing apparatus to permit particles of ink from the ink distributing apparatus to be drawn directly from the components of the ink distributing apparatus through the adjacent perforations of the wall.

4. In a rotary printing machine including an ink distributing apparatus having rotary components, an ink receptacle adjacent the ink distributing apparatus, the receptacle being substantially coextensive with the ink distributing apparatus and provided with a substantially coextensible perforated wall positioned towards the ink distributing apparatus, and a conduit in which a partial vacuumis maintained communicating with the receptacle for drawing ink mist created by the 55 ink distributing apparatus directly from the components of the ink distributing apparatus through the adjacent perforations of the wall into the receptacle and conduit.

5. In a rotary printing machine including an ink distributing apparatus, a double walled guard adjacent the ink distributing apparatus and substantially coextensive therewith, substantially the entire wall of the guard adjacent the ink distributing apparatus being perforated, and an ink conveying conduit connected with the guard to convey ink therefrom. A

6. In a rotary printing machine including an ink distributing apparatus, a double walled guard adjacent the ink distributing apparatus and substantially coextensive therewith, substantially the entire wall of the guard adjacent the ink dis= tributing apparatus being perforated, and a conduit in which a partial vacuum is maintained connected with the guard for drawing ink mist created by the ink distributing apparatus into the receptacle and conduit.

'7. In a rotary printing machine including an ink distributing apparatus, a double walled guard hingedly secured adjacent the ink distributing apparatus and substantially coextensive therewith, substantially the entire wall of the guard adjacentthe ink distributing apparatus being perforated, and a conduit in which a. partial vacuum is maintained connected with the guard for drawing ink created by the ink distributing apparatus into the guard and conduit.

FREDERICK GRAFTON LOUGEE.