US2004148A - Platen feinting press - Google Patents

Description

June 11, 1935. E. J. YOUNG PLATEN PRINTING PRESS Filed Oct. 15, 1931 2 Sheets-Sheet 1 m m m w.

BY (idyarez Yvuny ATTORNZY? June 11, 1935'. V E. J. YOUNG I 2,004,148

PLATEN PRINTING PRESS Filed Opt. 15, 1931 2 Sheets-Sheet 2 l l I J INVENTOR.

ATTORNEYJ;

Patented June 11, 1935 1 i1 UNITED STATES PATENT OFHQE PLATEN raiNTiNc- PRESS Edgar J. Young, Trowbridge, Wilts, England, as-

signor to The Chandler and Price Company, Cleveland, Ohio, a corporation of Ohio Application October 15, 1931, Serial No. 538,931

3 Claims. (Cl. MIL-293) In the use of platen or Gordon printing presses rect this, regulating means, on the order of a it has been a custom to attain such adjustment micrometer adjustment preferably, is applied to to parallelism or levelling up for uniform imthe mounting of the bed shaft 5. In the form pression as might be required between the bed shown in Figs. 1 and 3, this involves a screw- 5 and platen, by changing the screw-settings in threaded adjustment, comprising gear teeth It] the platen. Such method, in the nature of fit on a segment ii secured to the shaft 5. (Jo-actand try, is time-consuming, besides requiring ing with such gear teeth is a screw or wormsome skill and good judgment. Means for semember 52 On a shaft 5 3 mou ted in a us curing regulation to parallelism without inter- M in relation with the tooth-segm n d at the fering with the platen anchorage, and such as to 1 1 1 f -"W d d being mounted in a bearing be available for quick action, even in unskilled 55 on the frame. A hand-crank 56 allows turnhands, is accordingly an important desideratum ing of the S a t a regulation of the DOSitiOn i the t nd highly desir bl of the variably-positionable carrier mounting of To the accomplishment of the foregoing and the bed 3, by V tu Of t S a t 5 being 900911- 35 related ends, the invention, then, comprises the o as betw i Central D and its etld i5 features hereinafter fully described and particup r n In h r W m v m n of e e: larly pointed out in the claims, the following dem nt H c rr sp ndin ly partial tat s t scription and the annexed drawings setting forth S t 5 W h t b d C i t e y, d c u in detail certain illustrative embodimentsof the 0f th eccentricity the supp -p 0f the bed 20 invention, these being indicative however, of but i c ri d in a nm f rw d r back, re y 20 a few of the various ways in which the principle a g ng the face-angle 0f e bed a the yp of th in nti may b employed form carried thereon, as will be plain by referring In aid an e d drawings; to the dotted line positions available for the face Fig. 1 is a side elevational View of an embodi- 0f e s Shown in ment of the invention; Fig. 2 is a similar view of n he o Set forth in the d is a a a modification, the upper portion of the struccarried by a Shaft 50L Which presents a c ture being broken away; Fig. 3 is a. plan view of tricity as between its central portion and end a portion of the structure shown in Fig. 1; and port ons, d an a a projecting o t Fig. 4 is a side elevational view of a portion of shaft is pivotally connected to a link [1, which a modified construction. in turn is pivoted to a lever It fulcrumed at a 30 Referring more particularly to the drawings, point is to the frame. At its upper end the lever there is shown in Figs. 1 and 3, a printing press I8 is connected with the end of a shaft l3a by a of the Gordon or platen character, comprising head as somewhat in the nature of a universala supporting frame 2, and a bed 3, the former joint connection in a housing 2! swiveled on the carrying a platen p and a driving shaft 4 with a end of the shaft lea. Turning of the hand- 35 pitman actuation for the bed 3, whereby the latcrank ltd, again regulates the position of the ter with its type-form may be oscillated back shaft-center support for the bed, through the and forth for the printing of sheets successively intermediary of the lever (8, link H and arm Ila, placed in position to be impressed by such printthe shaft I30, moving fore or aft by reason of its ing form. The bed is carried by a shaft 5 at the screw-threaded engagement in the fixed thread- 40 lower part of the frame, and with such arrangeed-bearing 22.

ment the pitman rod or crank rod 6 connecting In operation, when it is desired to regulate the between the crank 7, as revolved by the drive position of the bed, the hand-crank it or lea is shaft 4, and a suitable point of connection, for turned in the appropriate direction, depending instance back-shaft 3, allows oscillatory moveupon whether the setting requires movement of ment of the bed 3, as indicated. The usual inkthe point of bed support forwardly or rearwardly,

ing mechanism 9, of any desired detail, is proin order to bring the faces into parallelism at the vided; and further description as to this is unplane of printing. By reason of the micrometer necessary. type of adjustment, the proper positioning can be In connection with the operation of the press, arrived at with a high degree of accuracy, and 50 where on account of a, change in thickness of the without loss of time. tympan or stock, or for other reason, the face of In the form of construction shown in Fig. 4, the bed plate may become somewhat out of parthe bed 3 is mounted on a bed shaft 527, which is allelism with the co-acting sheet-carrying surcarried by a slide 25 reciprocable in a suitable face, uneven impressions may result. To corguideway, and having an extreme range of move 55 ment determined by the slot 26. The slide 25 is engaged in turn by a pinion 24, the slide having corresponding rack teeth. The pinion 24 is secured to a stub shaft which also carries a worm gear 23 which is actuated by a worm IZb mounted in a housing Mb and constituting the end of the hand-crank operating shaft lBb. Adjustment by means of this construction is analogous to that shown in Fig. l, a cylinder hand crank being employed to turn the shaft l3b in one direction or the other, in accordance with requirements, and the worm gear drive I21), 23 then actuates the pinion and rack 24, 25, thereby adjusting the slide with its shaft 51) and bed carried thereon.

Other modes of applying the principle of the invention may be employed, change being made as regards the details described, provided the means stated in any of the following claims or the equivalent of such be employed.

I therefore particularly point out and distinctly claim as my invention:

1. In a printing press, a platen, a movable formcarrying bed, a shaft below supporting said bed, and means in association with said shaft for regulating the parallelism of the bed with respect to the platen, said means including a variablypositionable carrier for said shaft and means for setting and retaining said carrier at any desired point in its range of positions.

2. In a printing press, a platen, a form-carrying bed, means mounting said bed for oscillation to and from the platen, said means including a bedshaft, slide means in which said bed-shaft is mounted, rack teeth on said. slide-means, a gear pinion meshing with said teeth, a worm gear secured to said gear pinion, a Worm coacting with said worm gear, and a hand-crank for operating said worm.

3. In a printing press, a platen, an oscillatory form-carrying bed adapted to contact therewith, and means controllable during the oscillation of the bed for adjusting the face of the form to parallelism with respect to the platen, said means including an eccentric bed shaft, an arm outstanding on said eccentric shaft, and a screwthreaded adjusting shaft operatively connected to said arm and adapted to shift horizontally the axis of oscillation of said bed and maintain said axis in shifted position.

EDGAR J. YOUNG.

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