US560022A - Machine foe varnishing or coating paper - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

E. BUSH.

MACHINE FOR VARNISHING 0R COATING PAPER.

No. 560,022. Patented May 12, 1896.

. wogmwfi m M DREW B BRAHAM PHOTO-m0 WASHINGTUNYQC (No Model.) 2 SheetsSheet 2 E. BUSH. MAGHINE FOR VARNISHING 0R COATING PAPER. No. 560,022. Patented May 12, 1896.

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I ANDREW a GRAHAMYPHUTWUTHQWASHINGTDKDC V UNITED STATES ATENT airmen,

EDMUND BUSH, OF LEEDS, ENGLAND.

MACHINE FOR VARNISHING OR COATING PAPER.

SPECIFICATION forming part of Letters Patent No. 560,022, dated May 12, 1896.

Application filed May 27,1896. $erial No. 550,790. (No model.)

To (6 whom, it 77260; concern.-

Be it known that I, EDMUND BUSH, a sub- ,jcct of the Queen of Great Britain and Ireland, residing at Leeds, in the county of York, En gland, have invented certain new and useful Improvements in or Connected with Machinery for Varnishing or Otherwise Coating Pa per or other Flexible Material, of which the following is a specification.

This invention relates to a machine for varnishing or coating sheets of paper or the like, the said invent-ion particularly referring to the means (i. 8., the taking-off fingers hereinafter described) whereby the sheets of paper are taken off the carrying-roller and transferred to a traveling delivery-band, while the parts of this machine are so combined that the sheets are fed onto the cylinderin an upward direction at one side thereof, are carried upon the said cylinder during only a portion of a revolution, and are delivered therefrom on the other side of the machine, whereby time is saved and the feed-table is not obstructed by the taking-off or other overhead mechanism.

My invention will be clearly understood by describing same with reference to the accompanyin g drawings, in which similar letters re fer to like parts in all the figures.

Figure l is a side elevation of a machine constructed according to my invention, and Fig. 2 is a cross-section of a portion of same. Figs. 3, 4, and 5 are detail iews.

I employ a framework A, composed of two side frames, which are stayed together by bolts and cross-framing. A cylinder B is mounted on a shaft B,which is carried in bearings situated in the side frames A, and the said cylinder is of the continuous rotating type and is provided with cut-away portions, as shown.

1) and E are rollers, the roller E being covcred with elastic material, and the roller D is made to revolve in a varnish-trough F, from which it carries a suitable amount of varnish to the roller E, which in its turn supplies the varnish to the work on the cylinder B as the latter rotates.

The main shaft 0, cylinder B, and the two varnishing-rollers D E are geared together by means of spur-wheels 0, W, E, and D, so that the cylinder and roller rotate at an equal speed.

G is the varnish-reservoir, which contains the supply, and a pump H and tubing H are provided for raising the varnish to the trough F at a suitable rate to meet the requirements of the machine, and 11 1s an overflow-pipe to return the superfluous varnish to the reservoir G. The pump H is actuated by a connectingrod J, which is connected to a pin on the crank E, situated on the extremity of the roller E, and the crank E in rotating works the pump at a suitable speed.

The cylinder is provided with and carries grippers T of ordinary construction to seize the paper at the feed side, while a roller Y holds the sheet in close contact with the cylinder.

I arrange the taking-off fingers R, hereinbefore mentioned, on the reverse side of the cylinder to the feed-table A and such fingers are suitably carried and operated, as hereinafter described, so that a slow action of the same upon the paper is obtained, the fingers R bymeans of a motion of translation which they receive at proper times being caused to follow the motion of the cylinder and to gradually remove the front edge of the sheet by a rotary motion which is simultaneously given to them, and they (the fingers R) then act as guides to conduct the sheet onto the traveling carrying-off band? This mechanism is as follows: On the shaft 13, I mount a cam K, which through the medium of the roller L actu ates a lever L, fulcrumed at L A springrod M is connected to the lever L in such a manner as to press the face of the roller L upon the cam K.

N is a fixed guide which carries a slide P within same, and a rod P connects the said slide I to the end of the lever L. The same cam-and-lever arrangement is employed on the opposite side of the machine, and a rocking shaft R, provided with fingers R, is carried by the slides P, which hold the same parallel to the cylinder B.

R is an arm which is keyed on the end of the rocking shaft R, and the said arm R is pivotally connected to a link L the other end of the link L swinging on the fulcrumpin L A rotating roller S is mounted in fixed bearings situated on the guides N, and the said roller S carries endless traveling bands S, the

said bands S being stretched over roller S carried on brackets S attached to the framework A of the machine. It is onto the band S that the fingers R guide the finished sheet.

The paper to be varnished is fed up to the stops in the ordinary way, and on the cylinder B arriving at the proper position the grippers T take hold of the paper and carry it behind the guide-roller Y, which latter holds it close to or in contact with the cylinder. The sheet then passes behind the varnish-roller E, which is supplied with a coating of varnish from the trough F through the medium of the roller D, and said roller E completely and evenly varnishes the sheet.

As the cylinder B proceeds the grippers T are thrown into the open position, as is common, and the roller L, coming into contact with the smaller portion of the cam K, actuates the lever L and raises the slides P, carrying the rocking shaft It to the up position with the fingers R projecting into the cutaway portion of the cylinder B, as shown at Fig. 4;. The front edge of the paper, which is already freed from the grippers T, is thus received over the front edge of the fingers R, and at this moment the roller L, coming to the change in the cam K, rocks the lever L, which lowers the rocking shaft R at a speed equal to that of the cylinder B, at the same time causing the fingers R to recede from the cylinder B, by reason of the rocking action produced by the arm R and link L to the position shown at Fig. 5. The fingers R now stop; but they are sufficiently withdrawn to allow the cylinder B to pass, and as the latter continues its movement the sheet is fed onto the continuous traveling bands S with the varnished surface in the upward position.

This machine has several important advantages over machines hitherto employed, owing to its simplicity and the compact arrangement of its operative parts. The arrangement enables the machine to coat a sheet during a short portion of a revolution, and the fingers on the rocking shaft guide the sheet face upward to the traveling bands in an improved manner, as set forth.

Ilaving now described my invention, what I claim is 1. In a machine for varnishing sheets of paper or the like, the combination with the feed-table and a cylinder, having cut-away portions and grippers carried by the cylinder, and varnishing-rollers and trough located on the feed side of the cylinder and above the feed-table; of a shaft R located on the opposite or delivery side of cylinder, taking-off fingers R carried by the shaft R and acting within the cut-away portion of the cylinder, and mechanism by which the shaft R is raised and rocked to project the fingers R into the cut-away portion and beneath the sheet of paper and lowered at a speed equal to the travel of the cylinder, and rocked to with draw the fingers from the cut-away portion and hold the same stationary to guide the sheet, and a delivery-band to convey away the sheet, as set forth.

2. In a machine for varnishing sheets of paper or the like, the combination with a rotating carrying-cylinder, having a cut-away portion, and the shaft 13 therefor, grippers carried by the cylinder, varnishing-rollers and a trough located on the feed side of the cylinder, and a feed-table located below the varnishing-rollers and trough; of a shaft R parallel with the cylinder and on the side opposite to the feed-table, taking-off fingers R fixed on the shaft and acting within the'cut away portion of the cylinder, bearing-slides P to carry the shaft R, fixed guides N for the blocks P whereby the shaft R maybe rocked and raised or lowered, mechanism for raising and rocking the shaft R at the predetermined periods, and a cam K 011 cylinder-shaft B for actuating such mechanism, as set forth.

3. In a machine for varnishing sheets of paper or the like the combinatioirwith a rotating carrying-cylinder having a cut-away portion, and the shaft 13 therefor, grippers carried by the cylinder, varnishing-rollers and a trough located on the feed side of the cylinder, and a feed-table located below the varnishingrollers and trough; of a shaft R parallel with the cylinder and on the side opposite to the feed-table, taking-off fingers R fixed on the shaft R, and acting within the cut-away portion of the cylinder, bearingslides P to carry the shaft R, fixed guides N connected to the frame for the bearing-slides P, rock-levers L fulcrumed on the frame, links P connecting the bearing-slides P to the lever L, rotating cams K on the cylindershaft to act on opposite ends of the rock-levers L to depress the slide-bearings P, springs M to raise the levers L and lift the slide-bearings P, links L pivoted to the framework, arms R fixed to the shaft R, and pivotal connections between the links L and the arms R whereby the shaft R is rocked by the lift ing action, as set forth.

EDMUND BUSH. lVitnesses:

GRIFFITH BREWER, JOHN JowETT.

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