US894575A - Printing-press. - Google Patents

Description

No. 394,575. PATBNTBD JULY 28, 1908. H. P. BECHMAN. 'PRINTING PRESS.

APPLICATION FILED JULY 5. 1907.

2 SHEETS-SHEET 2.

UNXTED i STAfES PATENT OFFICE.

HENRY F. BECHMA", OF BATTLE CREEK, MICHIGAN, ASSIGXOP. TO DUPLEX PRINTING PRESS COMPANY, OF BATTLE CREEK, MICHEGAN, A CORPORATIGN OE IGH IGAN.

PRINTING-IRE SS.

Specification o! Letters Patent.

Patented .nay 28, 190s.

To all whom 'it may concern:

Be it known that I, HENRY F. Becmmn, of Batt-le Creek, in the county of Calhoun and State of 1.-..ichigf.n, have invented cerl tain new and useful Im irovements inlrint ing-Presses; and I here y declare that the following is a full, clear, and-exact dcscri tion thereof, reference being had to the accompanying drawings, which form part o f this specification.

The present invention relates to new and useful improvements in web perfectingprinting presses, and more particularly to that type embodying a reciprocating type bed and cooperating impresslon cylinder.

The primary object of the invention is to provide a novel construction which permits the web to be'fed continuously through the press at a uniform speed, thereby obrinting the necessity for employing an equalizer or compensating device', which latter is for. many reasons objectionable since the web frequently becomes i slack with the result that the paper strikes in different positions and considerable offset. is occasioned.

For a full understanding of the. invention and the merits thereof and also to acquire a hmwledge of the details of construction, reference is to be had to the following description and accompanying drawings, in which- Figure 1 is a longitudinal sectional diagrammatic View of a printing press embodying the invention, the said press being shown es comprising but a single pair of printing con les. Fig. 2 is a'slmllar View showing a sligntly modified form of press which coinprises two pairs of printing couples. Fig 3 is an enlarged detail view illustrating one mechanism for throwing the impression cylinders off and on im iression.

Corresponding am like parts are referred to in the. following descri )tion und all the views of the drawings by li 'e reference churncteis.

. A printing press embodying the )resent invention consists essentially of a p urality of n'inting couples and means for threading a e througnthesan1e,eachof the saidcouplcs comprising a reciprocating type bed and a stationary co-ucting impression cylinder.A

. The press may either iebnilt with a single pair of printing couples as shown in Fig. l, or with a plurnlitv' of pairs of the. printing are upon then' return movement.

couples, according to the extent and nature of the work to b e performed.

Any approved means may be employed for lifting the impression cylinders into an inoperative position when the type beds Specifically describing the construction shown in Fig. l it will be observed that the same is formed with n pnir of reciprocating ty e beds l and 1-'arranged one above the, ot ier in approximately horizontal und pnrnllel planes, andstationnry co-acting inipression cylinders l and 2". The cylinder v2. o erates only on the forward (right hand) stro 'e of the bed 2; while the cylinder i o erstes only on the return (left hand) stroge of the bed l. These beds are moved at a uniform speed during im iressions, corresponding with the travel or iced and delivery of the. web. TheI press shown in Fig. l can be used to print and perfect alternato sheets or lengths of web, or the printing couples in Fig. l can print alternate spec-es on opposite sides of the web. The. web VV' is drown from the. roll lt and passes around the guido roller 2%, thence extending u )wnrdly between the S0 feed rollers 4 and 5 am downwardly around the guide roller after encircling the upper ortion of the last mentioned feed roller 5.

lt is obvious that feeding und delivering systems are not absolutely necessary in this press, as the )oper passes through the, innchne at n uniiorm rote. of' speed corresponding with the uniform `speed of travel of the beds, but in n press where. compensating devices nro used it is necessary to have in-fecding und delivering systems. lf found desirable n connor tape such :is that indicated at 7 may be utilised to facilitate the. pnssnge. of the web between the feed rollers and in thel present instance. the coaxor tape. is shown as passing around the feed roller 4 und the, two idlcrs S, S. l'` rom here the web passes over the guide roller .l, down and between the cylinder la and reci rfa-ating type bed 2,

up and aroundthe guide roller H), over and 10G around the coaxer roller ll, up and around the conxcr roller l2, bnc-li and around the guide roller lit, down and between the. inl- -iression cylinder I'-l und reciprocating t'ype )ed I, up nud over the guide roller 14. lhe web is then drawn over und around the roller l5, and up and around the delivery roller 16- whence it passes to any approved form of cut-v printing couples are ein loyed comprising the reciprocating type be 1d, 2d, 3d and 4d; and the co-acting stationary impression cylinders 1b, 2b, 3*' and 4b, the said printing .couples being arranged in pairs and the type beds of each pair being disposed in horizon tal and approximately parallel planes; In this press cylinders 2* 4b are arranged to print only on the forward stroke of beds 2d 4d and cylinders il 3b print only on the return stroke of beds 1i 3d. If cylinders 2h 4b and 1F31 be arranged to print alternate spaces of the web erfected pa ers can be roduced. The web l is drawn rom the ro l R and passes around the guide roller 3, u and between the feed rollers 4 and 5, dlbwii and around the guide roller 6, over and around the guide 9, down and between the reciprocating ty e bed 2d and impression cylinder 2b, up an around the guide roller 10, under the roller 11, around the guide roller 18, between the type bed 4d and cylinder 4b, up and around the guide roller 19, and around the coaxer roller 20. From here the web W extends up and around the up er coaxer roller '.21 back and around the gui( e roller 22, down and between the type bed 3 and coacting impression cylinder 3b, up and around the guide roller 23, over the roller 12, around the guide roller- 13", down and between the type bed ldand impression cylinder 1b, up and around Iie guide roller 14, over and around the roller 15, andup and around the deliveryroller 1 6 and thence to any approved cutting and assembling mechanism.

It will be observed that coaxer tapes similar to those described in connection with the construct-ion shown in Fig. 1 are employed tofassist the web in its assage around the feed roller 5 and the delivery roller 16.

Any suitable means such as the well known Napier movements may be employed to im part a uniform reciprocating movement tothe ty ie beds and in the, present instance each oi the beds is shown as provided with an upper rack 24 and a lower rack 25, the said racks alternately meshing with a pinion 26. This pinion 26 is key ed upon the same shaft as a gear wheel :2T which meshes with an intermediate gear wheel 28 rigid with a gear wheel 29 v ich engages a gear wheel 30 serving to driv he impression cylinder of the corres ondiiig couple. It is within the province oi) the invention to drive all the rollers in the press at .i uniform' speed equal to the s eed of the web or to merely use them as id ers. ln the former instance it will be eriectly obvious however that there will be ess offset and sinutting of the paper after being printed.

'tate the passage'of- The superposed cylinders rnay be thrown on and ofi im ression by the mechanism illustrated in Fig. 3. As therein shown the upper and lower cylinders are respectively journaled in eccentric boxes a, a', which are connected by leversb, b', to a. 'common bar c, which depends below the lower bed and is provided with a friction roller c engaging a race cam groove d in or attached to a gear d, journaled on a stud or shaft d2, and meshing with a gear e driven by the gear 29 of the lower bed actuatinfI mechanism. The cam d is driven at such speed as to raise and lower the bar c once for each reciprocation of the beds, and the eccentrics a, af, are so set that Aone cylinder can be thrown on inrfor throwing oli impression on alternate strokes of the bed, means for dii'ectin aweb successively between the beds and cy inders, and means for continuously feeding the web forward between the beds and cylinders both during and after the taking of impressions.

2. ln a web printingpress, the conibina' tion of two reciprocating beds and COaCtiIig cylinders arranged one above the other, means for throwing the cylindeis alternately olf impression during one stroke of the beds, means for moving the beds at a uniform speed of travel during the taking of ression, said beds and cylinders print-ing ternately, and means for continuously feed@ the web between the beds and cylinders both durinir and after the taking of impressions.

n a web printing press, the combina.- tion of two reci rocatmg parallel 1:leds and co-acting cylin eis arranged different lanes, means for throwing) off impression during one stroke of the eds, means for moving the beds at a uniform speed of travel iniy a web between said beds and cylinders,

said beds and cylinders printing alternately and onlyl when the res icctivebeds a`re movi' ing in t e direction o the lead of the web, and means for continuously feeding the web between the beds and cylinders both during 'I and after the 'l `iking of impressions.

4. In a. printing press, the combination of a pair of 'ty )e beds arranged parallel-planes one above ii e other, and a pair of impression cylinders co-actinvitli said beds, means for reciprocating the ds and caus them to move at a uniformspeed of trave uring the taking of impressions, said beds and cylinders printing dternatelyland only when the 'coacting bed is moving in the direction of tbe lead of the web, and means for feeding a web continuously and at uniform speed between the beds and cylinders.

5. In a web printing press, the combination of two beds and two co-ac'ting cylinders arranged in one lane; two other beds and two (zo-acting cy inders arranged in a lane above and arallel with that of the ower beds and cylinders; means 'for reciprocatin the beds and moving them at a uniforms ee( of travel during 'the taking of impressions, tbe lower beds and cylinders printing on the forward stroke of the beds, and the upper beds und cylinders printing on the return stroke of the beds, and means for directinv a web successively between the beds and cylinders. v

6. ln a web printing press, tbe'combina tion of two reciprocating beds and co-acting cylinders arranged in one plane, two other beds and two oo-acting cylinders arranged in a plane above and para] el with that of the lower beds and cylinders, means for mriving all the beds at a uniform speed of travel during the taking of impressions, the lower beds and cylinders operating in alternation with the upper beds and cylinders, and tlie'lower beds and cylinders printing on the forward stroke of the beds, and the upper beds and cylinders rinting on the return stroke of the beds; an sive-ly between the beds an cylinders at a speed uniform with that of the travel of the beds during impressions.

In testimony that I cla-im the foregoing as my own, I affix my signature in presence of two witnesses.

HENRY F. BECHMAN. Witnesses:

F. W. DUNNING, CHAs. A. GRAMEs.

means for feedimT a web succes-

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