US43350A - Improvement in printing-presses - Google Patents

Description

UNITED; STATES PATENT GFFICE.

STEPHEN E. TUCKER, 0E NEW YORK, N. Y.

IMPROVEMENT IN PRINTING-PRESSES.

Specificatiouformiug part of Letters Patent No. 113,350, dated .Tune 28, 1864.

Figs. l4'and 5 sections on an enlarged scale of ,part of one of the radial bars. l

' The same figuresindicate like parts in the drawings. l

In this class of printing-presses the form or forms of type are arranged on a segment or segments of a rotating cylinder, the ink-distributing surface being on part of the circum-f ference of the same cylinder', and the ink is transferred fromwh at is kno n as the inkingcylinder 7 to the ink-distribu ing surface of the type-cylinder by acomposition roller.

The irst'part of my said invention 'consists in so mounting the compositiony roller that while it is bearing agains'tthe distributingsurface on the type-cylinder, and while moving from and toward the said type-cylinder, it shall Vcontinue in contact with the inlingcylinder, from which it takes the'ink, by mounting the said roller in a frame-which vibrates in the axis ofthe hiking-cylinder from which it receives the ink.

The second part ofmy invention relates to an improved manner of adjusting the roller which transfers the ink to theink-distributing surface of the type-cylinder so as to admit of more readily adjusting the periphery of the said roller to the ink-distributing surface ofthe type-cylinder, the said improved mode of adjustment being also applied to the roller which takes the ink from the fountain-roller and transfers it to the inking-cylinder.

they may be free to turn round, so that paper or any other substance that may chance to get on them may be easily taken off, such-mechanism being self-acting to restore the rollers to their normal postion.

In the accompanying drawings, 1 l represent the 4side frames of a type-revolving printingmachine fixed to the foundation-plate 2. The

type-cylinder 3 revolves in bearings in the side frames, andis actuated by apinion, 4, fixed on the driving-shaft 5, gearing into and driving the large wheel 6, keyed on-the outer end ofthe type-cylinder shaft. Another pinion, 7,

on the driving-shaft 5 drives the wheel 8 and cam-shaft 9, to which it is fixed, and still another wheel, 10, on the drivin g-shaft 5 drives :the hiking-cylinder 1.1 through the wheel 12,

Iixed onits shaft 13, outside of the side-frames. The position of the forms of types: on the periphery ot' the type-cylinder is represented at 14 14, and the remainder of the periphery 'of the said cylinder is made about one-quarter of an inch less radins than the forms, and is used as an ink-distributing surface. The composition roller L5, for supplying ink to and distributing it oir'the inlrclistributing surface of the type-cylinder, always revolves in contact `lwith the periphery of the hiking-cylinder 1l,

Vand at intervals with the inkdistributin g surface of the type-cylinder, but as the forms of type approach it is moved away from the typecylinder, to let them pass Without touching. This is eiected bythe roller 15,`runningin bearings in a dama- 16, that hangs freely on the shaft 13 of the inkihg-cylinder 11, and an arm, 17, projecting from the lower part of this frame, carries a friction-roller, 18, against which the -pain 19 on the cam-shaft 9 operates, and the "position of the cam 19 on the shaft is such that it lifts the arm 17, and consequently deprcsses the roller 15 for the passage of the form of types. The hanging of the frame 1b on or near the axis of rotation of the hiking-cylinder 11 insures its running in .contact with the ,said cylinder, notwithstanding its vibration to and fro from the ink-distributing surface of the type-cylinder to permit the forms to pass.

The composition roller 20, that supplies the ink from the fountain-roller 2l to the inkingcylinder 1l, runs in bearings in a frame, 22,. pivotcd to the side frames, 1 1, aia-23, andthe s'tid frame has an arm, 24, extending backward and carrying a friction-roller, 25,)that is operated by the cam 26 on the cam-shaft 9 in 'a similar manner to the frame 16, as described 'constantly decreasing in diameter and are rcquired to make a given pressure suited-to their elasticity, it is necessary to adjust them. To

effect this a rod, 27, is jointed to the extreme end of the arm 24, and runs down through a hole in the foundation-plate 2. To' this rod is fixed a collar, 2S, upon which the end of a strong fiat spring, 29, rests, the tension of which forces the roller 20 against the inkingcylinder 11 but to prevent the pressure from being too hard against the hiking-cylinder 11, and also to adjust the roller as it becomes smaller from use, there is a regulating-shaft, 30, which extends from the outside ot' the side frame through an index-plate, 3l, and journalbox 32 on the foundation-plate, and this shaft has an eccntrcie pin, 33, (see Sheet 2,) which y projects from its inner end, and on this pin the collar 28 of th'e rod 27 descends, so that by t'irning the regulatiugshaft 30 the elevation ot' the eccentric pin can be readily adjusted to determine the extent to which the collar 28 and rod 27 shall descend`and thereby regulate the' roller 20 and its upward pressure against the inking-cylinder.

In order to keep the regulating-shaft in anyr required position, an arm, 34, is fixed on its cuter end, having a thumb-screw, 35, passing through its extremity, the point of which presses against the'iudexplate 31. The pressure and motion of the comp. sition roller 15y Aupward against the ink-distributing surface of the type-cylinder is regulated byaprecisely similar arrangement applied to the 'arm 17 ofthe frame 16, and the controlling of. these rollers with exactness from the outside of the machine constitutes one ofmy improvements.

lThe rollers 38, for inking the forms of types, have their bearings 37 in'radial bars 36 36.

j As the type-cylinder revolves, these rollers roll otrthe ink distributing surface of the typecylinder 3; but as the form 14 approaches, the cams 39 39 (sce Fig. 3) .on the shaft of the type-cylinder operate against the friction-rollers 46 40 on the inner ends of the radial bars. They are thus pressed out from the center a dstance equal to the difference ot' the radii of 'I ink-distributingsurface and the surface of the type, which, as before stated, is about onequarter of an inch, while the form passes by them and is inked, when the radial arms are again pressed inward by the springs. 41 41 until the stop-pins42 42 rest against the side frames. There are two short shafts, 43 43, that pass through and turn in vholes in the side frames. T hcy have cach a weighted lever, 44, which tends to hang down in a perpendicular position. v'I heinuer ends of the shafts pass through squaremortises in the radial bars.. (See Figs. 4 and 5.) That portion of kkeach of the said shafts which passes through the mortises in the radial bars is cut flat, as shown at 45,-and in such a position that when the weighted levers hang perpendicularly the flat sidesy are at right angles to the line of the radial bars, and .in that position of the' shafts the bars can be pressed in toward the center, so that the inking-rollers 38 bear aga-inst the ink-distributing surface of the type-cylinder.

While the radial bars arein the position above described, if 'the shafts be turned until their ,weighted levers reach a horizontal position their inner ends will act as cams on the paper or anything else which may have got in# can .readilybe removed from their surface. The pressure of the bars against the lifters, caused by the springs 41,41,` will be sufcient to prevent the outside levers from bringing them back to their original position, and thus the bars and rollers are held out. If the machine should be started without turning back the shafts 43 43, the cams 39 39, as they pass the friction-rollers 40 40 on the radial bars, will force them and the bars out about onesixteenth of an inch farther, and thus relieve the shafts, which, by the gravity of their outside weighted levers. will turn them back to their original position, leaving the bars and rollers free to be operated as before.

When the machine is at rest, the rollers by this arrangement can be thrown out from the ink-distributing surface, thereby preventing the surfacesfrom being injured by contact.

What I claim as myinvention, and desire to secure by Letters Patent, is-

1. Hanging the frame which carries the roller which transfers the ink from the inking-cylinder to the ink-distributing surface of the type-cylinder so that it shallvibrate on the axis of the inkin-g-cylinder, substantially as and for the purpose described? 2. The manner of adjusting the pressure and range of motion of the roller which transters the ink from the fountain-roller to the inking-cylinder, and the roller which transfers it from the inking-cylinder to the ink-distrib utin g surface of the type-cylinder, or either of the said rollers, by the employment of the`adjusting-shaft with its eccentric pin or the equivalent thereof, in combination with the swinging frame which carries the roller, and

vibrated in one direction and against they ecface of the type-cylinder, for the' purpose' set;

l centric pin by a. spring or the equivalent fortlnamd so that the rollers sha-lll be restored thereof, as and for the purpose specified. to their Voperating condition when the form of 3. In combination with the radici bars of types reaches them, as set forth. the rollers for inking the form of types, the STEPHEN D. TUCKER.` shafts with their Weighted levers, or the equiv; Witnesses :V

aents thereof, for drawing the said rollers a ANDREW DE LACY,

4short distance from the ink-distributing snri WM. II. BISHOP.`

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