US1749316A

US1749316A - Means for preserving form rolls

Info

Publication number: US1749316A
Application number: US661926A
Authority: US
Inventors: Joseph P Catlin
Original assignee: Wood Newspaper Machinery Corp
Current assignee: Wood Newspaper Machinery Corp
Priority date: 1923-09-10
Filing date: 1923-09-10
Publication date: 1930-03-04
Anticipated expiration: 1947-03-04

Description

March 4, 930. J c N 1,749,316

MEANS FOR PRESERVING FORM ROLLS Filed Sept. 10, 1923 Z'mpreu/aza @(lrui' er FMMMMMWMW MWAMM '45, and also between the ink cylinder and the rarefied Ma... 4; 193o -j UNITED STAT S O E v JOSEPH 1?. oATL-IN, F PLAINFIELD, NEW JERSEY, ASSIGNOB TO ool) NEWSIPAPER,

' :MAGHINERY ooEroE TIoN, or NEW YORK, 'N. Y.,' A CORPORATION OF VIRGINIA MEANS Eon PRESERVING onM oLLs Application filed September 10, 1923. Serial No. 661,926.

. i This'invention relates to the inking mechanism of a printing press. The principal ob- 'jects' of the inventionareto provide fo'r'in I :creasing thelife of the composition form rolls now universally used in newspaper printing presses. These rolls, being used con- 'stantly to convey theink from the ink cylinder to the plate cylinder, are'considerably 1 I heated. When the temperature gets higher 0 than the composition of -which they are formed willstand they soften on thetsurfac'e and have to'be taken. out and recast. This delays the operation of producing the news-' papers and involves expense and trouble.

- Fig. 1 is a side viewpartly in section and partly diagrammatic of-part of a web perfecting press, showing a preferred embodi- 25 ment of this invention applied thereto;

s I Fig. 2 is a plan of the 'form' rolls thereof;

and V A I Fig. 3 is a view similar to Fig. 1 showinga modification.

I 80 I have shown the invention asapplied to a "press having plate cylinders and impres- 'sion cylinders 11 arranged in the'usual way and supplied with ink by a fountain roll 13 1 and ductor roll 17 I to the ink cylinder 14:. 3,59:

Distributing rolls15 are shown as usual on theink cylinder and a .pair of'composition' form rolls 16for deliveringink from the ink cylinder to theplate cylinder- 1 againstthe melting down above mentioned,- simply provide for cooling their exterior vr surfaces constantly. This is done in the form aflattened pipe 9 between the'two form rolls I plate cylinder. Thisis supplied'with air, gas

' or vapor under pressure through a pipe 8. "Thismay be of ordinary temperature or may be cooled or refrigeratedto give a greater The principal objectof this invention is toprovide for avoiding this difiiculty without I at the same time changing the composition -This invention relates tosthe form rolls chiefly. For the purpose of preserving themshown in Figs. 1' and 2 by the provision of coolingefieot. The pipe 9 is provided with numerous perforations 7 preferably in four rows. Two of them are arranged at the convexsides of the. pipe to direct blasts of air against the outside surfaces of the form rolls. The other two are located at the top and bottom to direct air against the plate cylinder and ink'cylinder respectively. Thus the surfaces which come in contact with the form rolls will also be cooled, so that, instead of increasing'the temperature of the form rolls by their contact'tlierewith they will tend to reduce it. I

This constitutes a very simple means for cooling these rolls and keeping them cool so that they will retain-their original shape.

I In the form shown in Fig. 3 a slight modification is indicated. Here the pipe 8 directs air, vapor, or carbonic acid gas under pressure into the pipe 9 through an open tube 5, so that atmospheric air may be introduced through them, induced by the current passing in. Otherwise the conditions are the same as in Fig. 2. i a

7 Instead offorcing air in through the pipes 8 and 6 in any of these forms different kinds of gases can be'used including gases which extract heat on expansion. Such gases being delivered under pressure will strike the rolls and cool. them more rapidly than ordinary Although'I have illustrated and described only two forms of this invention I am aware of the fact that modifications can be made therein byany person skilled in the art without departing fromthe scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to any of the forms herein shown and described but what I do claim is form rolls contacting With both and eno1os-- ing a space, of a cooling pipe extending along v i said space and perforated to directjets of cooling fluid against said rolls.-

8. In a printing press the combination with the-two 'form rolls, of a'nozzle-located in the space between said rolls and the :plate cylinder for simultaneously cooling the. e217; terior 01 both of the form rolls and theplate cylinderwhilefthe form rolls 'are'in the act" of transferring ink to said plate cylinder.

In testimony whereof I h ave hereuntoaf- I fixed my slgnature.

JOSEPH P. mm a I