US310200A - Machine for varnishing printed sheets of paper - Google Patents

Description

(No Model.)

J. T. HAWKINS.

MACHINE FOR VARNISHING PRINTED SHEETS OF PAPER.

Patented Jan.6,1885.

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| a IIILE HIHHIHIII UNITED. STATES PATENT ()EEIcE.

JOHN T. l-IAVKINS, OF TAUNTON, MASSAGHUSPTTS.

MACHINE FOR VARNlSHING PRINTED SHEETS OF PAPER.

."TfTZ-ICAE'ZQEE forming part of Letters Patent No. 310,200, dated January 6, 1885.

Application filed October 22. 1891.

To aZZ whom it may concern:

(1Y0 model.)

A indicates a slotted tumbler-cam, secured Be it known that I, JOHN T. HAWKINS, of to the gripper-shaft and operated in the usual Taunton, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Machines for Varn-ishing or Glossing Printed Sheets of Paper or Similar Material, which invention is fully set forth and illustrated in the following specitiealion and accompanying drawings.

The object of this invention is to provide, in a machine for varnishing or glossing printed sheets, a simple and efficient method of moving the varnish-depositing roller at proper intervals to and from the cylinder carrying the sheet, while maintaining said roller at a fixed distance from the varnish-fountain roller. It is also its object to provide an easy means of adjusting the contact of the varnish-depositing roller with both the varnislrfountain roller and the sheet-carrying cylinder; and, also, to provide a simple means of operating the hinged 'l'eedboard and front sheet-guides, and to provide for partially drying the sheets before delivering them upon endless tapes by means of a rotating fan, which shall at the same time by its blast press the sheets against the sheet-cylinder to prevent their falling back when the grippers open to release them. A further object is to arrange the varnish-fountain so as to be readily lowered away from its roller for the purpose of cleansing.

The invention consists of the parts and combinations of parts as hereinafter described and claimed.

In said drawings, Figure l is a side elevation of the machine, the delivery'tapes and feed-board being broken out to save space on the drawing. Fig. 2 is an end elevation viewed from the left-hand side of Fig. 1. Fig. 3 illustrates in two views the eccentric bushes in which the varnish-depositing roller is journaled. Fig. 4. illustrates in two views the eec'entriostuds carried in the long arm of the bell-crank lever, which carries the varnishdepositing roller. Fig. 5 illustrates the ar rangement for operating the feed-board and front sheetguides.

In said figures,the letter A indicates the two main side frames, in which is journaled a cylinder, A, provided with the usual grippers and sheet-lifter fingers. (The latter two not seen in the drawings.)

way by the opening and closing studs A A, secured to one of the frames A.

B indicates the feed-board hinged at B.

To a shaft, B", journaled in the frames A. is secured an arm, 13, carrying on itsfree end a roller, B. The roller B engages asuitablyformed groove in the head of the cylinder A.

Secured to shaft B are two more arms, B upon which the front end of the feedboard B rests. Secured, also, to shaft 13 are two or more guides, B, against which the sheets are fed when they project above the feed-board B. The groove in the head of cylinder A, which engages the roller 13*, is of such form as to lift the front end of the feedboard B just as the grippers are closed upon the sheet previously fed to the guides 13, and to lower it again when the whole of the sheet shall have passed off it. The arms B and guides B extending in opposite directions from the rock shaft B, the guides fall simultaneously with the lifting of the feed-board, and vice versa.

0 indicates the van1ishfountain, and O the fountain roller journaled in the frames A.

Journaled also upon the ends of the shaft of s the fountain-roller 0, outside of the frames A, are two bell-crank levers, G Carried in the short arms of the levers are eccentric bushes C, secured adj ustably in any position by the nuts 0 by means of pin-wrenches, as shown. J ournaled in the eccentric bushes C is the varnish-depositing roller Carried in the ends of the long arms of levers G are eccentric studs 0, carrying rollers C, and adjustably secured into position by the nuts G On the axle of cylinder A, at either end, are carried the two-leaved cams D, one leaf of each of which is secured to the cylinder-axis, and the other adj ustably secured to it by means of the curved slots D and bolts D for the purpose of lengthening or shortening the higher surface of said cams for longer or shorter sheets.

Attached at one end of the levers O, and at the other ends to pins in the frames A, are two spiral springs, D acting to keep the rollers 0 in contact with the cams D at all times. By the rotation of the eccentric studs (3 in the levers G", the nearest approach of the roller 0' to the cylinder A may be accurately adjusted and fixed, thus regulating the pressure of the I depositing-roller 0 upon the paper. By the rotation of the eccentric bushes G in the levers C the approach of the depositing-roller C to the fountain-roller C may be accurately adjusted and fixed, thus adjusting the film of varnish taken by the depositing-roller from the fountain-roller. Secured to the cylinder A is a gear-wheel, E. Secured to the axis of the depositing-roller 0" and meshing with the gear ID is a gear-wheel, E. Secured to the axis of the fountain-roller O and meshing with the gear-wheel E to escape gear-wheel E is a gear-wheel, E". Upon the shaft E" is secured a pinion, E, meshing with the gearqvheel E; and upon the same shaft, E, are secured suitable pulleys, and a fly-wheel, E, through the former of which, by means of suitable belts, the whole is actuated, or by a handle placed in the latter it may be driven by hand-power; The rise and fall of the cams Dis not sufficient to allow the gear E to pass out of mesh with the gear'E, but only sulficient to remove the varnish-depositing roller C far enough from the cylinder A to prevent the deposition of varnish upon those parts of the cylinder A not covered by the sheet. The depositingroller G is, for sheets narrower than the length of cylinder A, made of the proper length at its greatest dian'ieter to suit the width of the sheet, this length being varied for different widths of sheet. On a rod, F, secured at the ends to the frames A, are secured a series of stripper-fingers, F, for stripping the sheet from the cylinder A and leading it to a series of tapes, On ashaft, F, journaled in frames A, are secured a series of tape-pulleys (not shown in the drawings) carrying on one end the endless tapes F". Rising from and secured to the back end of feed-board B are two standards, F, in which is journaled a shaft, F to which is secured a series of tape-pulleys, F, which carry the other end of the endless tapes Upon the stud F secured to one of the frames A, runs an idler-gear, 1 meshing with the gear E and with a gear, F secured to the shaft F, giving the proper motion to tapes F Journaled in the frames A is a shaft, Gr, carrying a series of fans, G. Secured to one end of shaft G is a pulley, G. Upon the shaft F is secured a pulley, G, and pulleys Gr G are connected by a belt, G. The fountain G is secured to two brackets, I, one end of each of which is jointed at l to the cross-stay If. Screwed into the frames A are two milledheaded pins, 1. The points of these pins are tapered and enter corresponding taper-holes in the ends of the fountain, as shown, supporting it in place. Upon the removal or partial withdrawal of pins 1 the fountain C may be lowered, swinging on the pivots I into position for cleansing, at the same time leaving the roller 0 accessible for the same purpose.

Having thus fully described my said improvements, as of my invention, I claim- 1. In a machine for varnishing, glossing, or sizing paper or other similar material, a depositing-roller, as 0", adjustably journaled in arms, as 0 swinging upon the axis of afountain-roller, as G,whereby said depositing-roller is held at an adjustably-fixed distance from said fountain-roller, and also adapted to be moved to and froma sheet-cylinder, as A, substantially as and for the purposes set forth.

2. In a machine for varnishing, glossing, or sizing paper or othersimilar material, the combination of gearing for actuating the deposit ing and fountain rollers, consisting of a gearwheel, as E, secured to the sheet cylinder, meshing with an intermediate gear, as E, secured to the depositing-roller, and this latter meshing with a third gear, as E", secured to the fountain-roller, substantially as and for the purposes set forth.

3. In a machine for varnishing, glossing, or sizing paper or other similarmaterial, the com bination, with a depositing-roller, as 0 adjustablyjournaled in levers, as 0*, swinging upon the axis of a fountain-roller, as O, of adjustable cams, as D, and springs, as D, for antomatically swinging the said levers upon the axis of said fountain-roller as a fulcrum, and thus moving the said depositingroller to and from a sheet-c 'linder, as A substantiall r as and for the purposes set forth.

-.L. In a machine for varnishing, glossing, or sizing paper or other similar material, in eonr bination with a sheet-cylinder, as A, a rotary fan, as G, whereby the double purpose of pressing the sheet against the said sheet-cylinder and partially drying the varnish or other deposited material by the blast of said fan is accomplished, substantially as and for the purposes set forth.

5. In a machine for varnishing, glossing, or sizing paper or other similar material, or other machine to which sheets of paper are to be under-fed to a sheetcylinder, as A, the combination of front guides and hinged feed-board, consisting of a rock-shaft. as B levers for lifting the feed-board, as B", and front guides, as 13, secured to said rock-shaft and extending in the opposite direction from said levers, and an actuating-lever, as B, the latter operated to oscillate said rock-shaft, substantially as described, by any suitable connection to the machine, substantially as and for the purposes set forth.

6. In a machine for varnishing,glossing, or sizing paper or other similar material, a swing ing varnish-fountain, as O, fulcrumed to any suitable part of the machine, as to the crossstay I", so as to swing clear of a varnish-roller, as O, and held in position by suitable pins or screws, as I, substantially as and for the purposes set forth.

JOHN T. HAXVKINS. lVit-nesses:

ELISHA T. J ACKSON, .T. F. HALEY.

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