US511934A

US511934A - Aepaeatus poe oeeaitins the foems of eotiei pbintifg maoeineb

Info

Publication number: US511934A
Authority: US
Publication date: 1894-01-02
Anticipated expiration: 1911-01-02

Description

(No Model.) 2 Sheets-Sheet 1.

B. H. GOTT'RELL' APPARATUS FOR CLEANING THE FORMS OF ROTARY PRINTING MACHINES.

No. 511,934. PatentedJan. 2, 1-894.

(No Model.)

- APPARATUS FOR CLEANING THE FORMS OF R0 No; 511,934. Patentedl Jan. 2, 1894.

a i I 2 Sfieets-Sheet 2. E. H GOTTR'ELLw TALRY PRINTING MAGHINES. v

most liable to h EDGAR ll. C()'i"iRELL, OF ONINGTON APPARATUS FGR CLEANlNG T iiE 0F ROTARY PlliNTlilG-llli.lill-iES.

CONNEC"I(JU' ASSIGNOR, HY MESNE LL dz SONS COMPANY, OF SAME PLAlfJlil i EPEJIFICaTIDH forming part of Letters li atent Ho. 511.93%, dated January 2.18534 :lpplicatio riled )Sel Tc (fl Z5 whom it may (JOE/(36TH:

Be it known that l, Eocanll. COTTRELL, of Stonington, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Apparatus for Cleaning the Forms of Rotary Printing- Ihlachines of which the following is a specification.

'ihis inyention relates to that class of rotary printing machines in which the forms or printing plates are on cylinders.

The improvement may be applied to any machine of that classin which thereis room for it to Work independently of the inking rollers is particularly applicable to per-' footing machines and with especial ad an age to tne second form or plate cylinders of those machines the plates or forms of which are.

econie quickly filled up with fiuti: from the web of paper. its ohjectis to remove from the form or forms on tho cylinder after each impression all or the greater portion of the ink which remains on it or them and in which there is liable to he more or less of the fiuit, thus leaving the form or forms perfectly clean to take a fresh supply of clean ink from the inking nhllers.

To enable my invention to he understood by those skilled in the art I will proceed to describe it with reference to the accompany- Ling drawings which showiis application to the second form cylinder of a perfecting machine of the kind illustrated in 0. 11.001:- trells Letters Patent No. 472,666, dated April 12, 1892.

Figure 1 represents a side view of my form cleaning apparatus and as in nch of the print 1115; machine as is necessary L0 illustrate the construction and operation of said apparatus. Fig. 2 is a front View corresponding with Fig. 1. Fig. 3 represents detached one of the dotails of the apparatus which will be herein after explained. Fig. 4 is a vertical sectional View of the apparatus parallelwith Fig. 1. Fig. 5 represents in section a modification of the apparatus. j

Similar letters of roferencedesignate oorresponding parts in all the figures.

A is the main orside framing of the machine.

cry 3, 1893. Serial llov 460,852. 'No model.)

B is the secondiorinor plate cylinder havlug its shaft 13' working in suitable boxes 13- in the framing A. a a are the forinsfor plates on said cylinder.

C C c is a frame consisting of two side plates 0 O and a transverse connecting; bar 0 and carrying the rollers D Z) (Z which constitute the principal elements of my cleaning; apparatus the said frame-being so hinged on a. shaft D which has its hearings in the side framing A, that the rollers Z) I) may be brought into-a position for the form or forms on the cylinder to run, after every im pressiomin contact with said rollers as shown in Figs. 1, 4. and 5, or that the said rollers may he dropped a short distance out of the Way ot-the'cylindcr.

Fixed stops E are provided on the main framing'Ato stop the frame 0 C c in theposh. tion above mentioned, the contact between such stops and said frame being in cated by the short line 6 in Fig. 1. Oneof tn'ese stops E is shown detached in Fig. 3 which is afront View. To cil'ect the movement of the said frame G C c and rollers b b (l to and from this po'sitionl have shown the said frame connected at g y w f which has its hearings in the sides of the main training and which is furnished atone end with a hand crank (Fig. 2).

The roller d is of some hard material as metal, but the rollers I) Z) or their surfaces at least may he of some soft material that ith two eccentrics ff on a shaft I will take up the ink and i'lui fdirt from the,

form or forms on tho cylinderand give it to the metal roller d. his material may hethe ordinary so called composition commonly employed for inking rollers. 'ihe"rol.ler (l, which is to transfer the foul inl; from the rollers to some appliance or means for taking it away, is of some hard material which will not be injured thy such appliance, as for instance a scrape which could not he used on the soft or corn-position rollers. The roller (Z is represented as havingits bearing fixed in' the frame (3 (J '0, but the hearing stands [27 of the rollers Z) Z) areropresented as v adjustable toward and from each other on the said frame andas adjustable toward and from the form cylinder B for the purpose of bringing the said rollers 27 b in proper relation to Frol ere.

.with the forms on the cylinder, the said roller the said roller d and to the form or forms on the cylinder, the first mentioned adjustment being permitted and secured by slots 7' j in the plates 0 O and set screws 7:, 7c in said slots and the other adjustment being eifected by means of screws 1 Z, these means of adjustment being such as are common to inking The metal roller (1 is furnished with a gear d for the purpose-[of driving it from the gear B on the cylinder B through an intermediate loose gealgdi on a fixed stud 61 se cured in one of the stops E, the'said gear (1 being always in gear with the cylinder. The composition rollers b b are intended to he rotated. by contact with the metal roller (1 or cl having the same surface velocity as the forms.

In the example of the invention represented in Figs. 1, 2, and 4, a doctor roller 1) having a composition surface is shown operating in connection with the metal roller d to take the foulinh therefrom and transfer it to a second metal roller n which is arranged in stationary hearings on the sides of a fixed re-, ceiving box F to one side of which there is attached an adjustable scraper n for the purposeof constantly scraping the foul ink from said roller n, the so scraped ink being collected in the said box. The ductor rocksha ft G, the arms 1) p of which carry the ductor. roller 10, is represented as receiying thenecessary oscillating motion from a cam H on an upright shaft H which works in hearings in brackets H outside of the main framing and which derives rotary motion through bevel gears H* and B* one on the said shaft and the other on the cylinder shaft 13'. The cam H acts on the ductor shaft G through a short rock-shaft (1 which works in a bearing on one of the side frames A, one arm q of the said rock-shaft engaging with the said cam and the other if being con nected by a short rod or link 'r with an arm 12 of the doctor shaft G.

The metal roller nvis represented in Figs. 1, 2 and 4, as driven at a much slower speed than the metal roller d, the driving being offected by the spur gear (1 on the latter roller, two gears s 8 fast together but loose on the doctor shaft G- and a gear 11 on the said roller n, thegear 5 being larger than and gearing with d", and the gear 8' being smaller than s and gearing with the larger gear a on the roller '12-.

The object of transferring the foul ink by a ductor from the roller l, moving at the same surface velocity with the form, to a slower moving metal roller 11 is that the scraper works better with the slower moving roller. In some cases however, the means of taking away the foul ink may consist, as illustrated in Fig. 5, of a scraper n applied directly to the roller (1, and in such case the box it" and scraper a may be attached to the frame i have not thought it necessary to rogue sent any more of the inking apparatus than the form rollers 10, 10 which give the inh'directly to the form or forms but will simply state that the said apparatus may be so ar ranged on the opposite side of the cylinder to the cleaning apparatus above described and so organized as to be conveniently thrown out of reach of the forms on the cylinder when it is desired to make up or manipulate the forms, for instance as illustrated in Letters Patentof O. B. Cottrell, No. 472,666, dated April 12, 1892.

It will be understood that the cleaning apparatus is entirely independent of the-inking apparatus and that when at any time it is not desired to use the cleaning apparatus the frame 0 C c with the rollers h b d maybe dropped on the shaft or hinge D to a position in lwhich'the rollers b b will be clear of the forms in therotation of the kitten-but at all other times the frame 0 C o with its contained rollers is brought to and secured in the posh tion shown in the drawings in which the com position rollers 13 b will run in contact with the forms and the metal roller d, and that it also, if the latter be used, are in gear with the While it is preferable to use two soft surfaced cleaning rollers b b it is obvious that a single roller of the same kind might be used to take thejnk from a rotary form and transfer it to a metal or hard surfaced roller (i from which it may be scraped.

What I claim as my invention is-- 1. In combinationwith the form cylinder of a printing machine, an inking apparatus for applying clean ink to the former forms on said cylinder, a soft-surfaced cleaning roller independent of said inking apparatus for taking foul ink from said form or forms, a

hard-surfaced roller for receiving the foul ink from said soft s'urfaced roller, and means-for taking the foul ink from the said hard-sur- IIO faced roller, all substantially as herein set forth.

2. The combination with the form cylinder of a printing machine, of a soft-surfaced roller for running in contact with and taking ink from the form or forms on saideyliuder,

a hard-surfaced roller for running in contact with and taking ink from saidlsoiit-surfaced rolieiga second hard-surfaced roller haviuga less surface velocity than the first mentioned.

hard-surfaced rolier, a ductor between said first and second hard-surtacod rollers to trana for int: from the first to the second and a scraper for scraping the second, emirates:

. tialiy as herein set forth.

it The combination with the term cyiiniior ot a printing machine, of a roller trams mor able toward and from said cylinder, a soft;- snrfaced roller in said frame for taking' ink from a form or forms in the cylinder, a hardsnrfaced roller in said frame for receiving ink from said soft-surfaced roller, asecond hard-surfaced roller and fixed bearings therefor, a scraper for said second roller anda ductor in said movable roller frame arranged to oscillate between said two hard-surfaced rollers, substantially as herein set forth.

4. The combination with the form cylinder of a p inting machine, of a roller frame movable (award and from said eylinden one or more soft-surfaced rollersb bin said frame for taking'ink from the cylinder, a hard aurfaced roller d in said frame for receiving ink from said soft-surfaced roller, a gear 01' on said roller d, an intermediate gear (i always n gear with the cylinder beiween said gear (2 and the cylinder, a hard-surfaced roller n and fixed bearings therefor, a gear n on said roller n, a scraper n for said roller n, a rock shaft G and bearings therefor in said frame, a doctor roller p carried by said'roekshaft and oscillating between the said rollers d n, a larger gear 8 and a smaller gear 8 fast to-' gether but loose on said rockshaft the said larger gear .9 gearing with d and the said smaller gear 5' gearing with said gear 'n, all substantially as'and for the purpose herein set forth.

I I EDGAR H. COTTRELL. Witnesses; I

FREDK. HAYNES, LLDA M; EGBERT. 5