US1997612A - Vertical graining machine - Google Patents

Description

April 16, 1935. 5 VON wEBERN ET AL 1,997,612

VERTICAL GRAINING MACHINE Original Filed Nov. 9, 1929 2 Sheets-Sheet 1 Z 2 mg I: H l/ :I 7 33 u I 3 @w r 20 FIG. 1

O ll FIG. 2

WANG/1A April 1 G. VON WEBERN ETAL 1,997,612

' I VERTICAL GRAINING MACHINE Original Filed Nov. 9, 1929 2 Sheets-Sheet 2 I I HIHII IHIHIIIIHILIM Z8 6 g N /Z 1 In r 1 I T 74V? I 33-? M/ 1 \(1 (ll /z30 f r mg 5 r g 5/ l Mk FIG. 3

Patented 7 Apr. 16, 1935 'VERTICAL GRAINING MACHINE Guido von Webern and Edward William Hamant,

Dayton, Ohio, assignors to Oxford Varnish Corporation, Detroit, Mich a corporation of Michigan r Original application November 9, 1929, Serial No. 406,018. Divided and this application August 8, 1932, Serial No. 627,818. In Great Britain May 25, 1932 8 Claims. (01. 101-4166) This invention relates to an improved method and apparatus for supplying ink or pigment to substantially vertical printing elements, such as rolls. While our device may be used in any machine where it is desirable to feed ink to a substantially vertical surface, we have illustrated the device as applied to a vertical graining machineas described in our copending application, Serial No. 406,018, filed November 9th, 1929, and of which this application is a division.

In the drawings, Fig. l is a sectional plan view showing the general arrangement of parts of a graining machine,

Fig. 2-is a longitudinal vertical sectional view thereof taken along the line 2-2 of Fig. 1, and

Fig. 3 is a transverse sectional view taken along the line 3-3 of Fig. 1.

' Referring now to the drawings, the machine shown is a vertical surface graining machine adaptedfor graining surfaces disposed vertically, or nearly so. The primary elements of the machine comprise a pattern roll l, a. transfer roll 2 and may include a pressure roll or platen 3, for carrying the work to be grained or otherwise dec0- rated, into printing contact with the transfer r011.

At this point it may be stated that it is not essential that there be a separate pattern element such as shown, inasmuch as the pattern transfer roll 2 may have the design formed thereon. The pattern transfer element may further be embodied in shapes other than cylindrical rolls. For example, it may comprise a belt or a. ribbed or grooved generally cylindrical roll adapted for impressing surfaces other than generally smooth surfaces suchas shown on the blank in the machine.

The elements mentioned may be supported on main machine frame members comprising, as shown, a standard 5 and a sub-base 6, carried thereby in any suitable manner and secured as by bolts not shown. The pattern and transfer roll are supported on the sub-base as will now be described. v

Referring to Figs. 1, 2 and 3, the pattern roll which is "shown as a hollow cylinder having a central shaft "I, may have any suitable pattern thereon. For example, an intaglio pattern of a wood grain design may be etched on the outer surface in any suitable way. The shaft 1 extends downwardly through a boss formation 8 on the sub-base 6 at one end' and extends upwardly through an overhanging cross bar 9 secured as on posts l0 and II, the connection to only one ofthese posts, namely, Ill, being shown. The bar may be removably secured as by hand screws, one of which is shown at it, Fig. 3. The lower end of the shaft '5 has associated therewith a driving arrangement for the pattern roll.

The transfer roll 2 may comprise a suitable ring of resilient material, such as congealed glue and glycerine on a suitable core 115, and has a driving shaft at it. The driving shaft may be carried on a rocking support or frame ll which has upper and lower arm portions l8 and is joined by apost 20 rising from the sub-base t and a vertical end bar 22 joining the arms 88 and l9. The purpose of the swinging mounting is so that the transfer roll may be carried out of contact with the pattern roll whenever the ma.- chine is left standing'idle. The transfer roll is also driven positively in the machine shown.

A description of the driving mechanism for the pattern and transfer rolls is not given here as it is fully described in our co-pending application, Serial No. 406,018. The driving mechanism for the pressure roll or platen 3 is described in our copending application, Serial No. 456,337, filed May 28, 1930.

To supply pigment to the pattern roll l, we provide a device comprising essentially, pigment raising means in the nature of a pump for con veying pigment material from a reservoir to alongside the pattern roll and distribute an adequate quantity of the same uniformly on the pattern. The pigment supplying device is best shown in Figs. 1 and 3, and will now be described.

In the last-mentioned figures, there is shown an ink supply tank 26 removably'carried on the under side of the base member 6 as on L-shaped brackets 21, these bracket arrangements permitting the tank to be slid beneath the base member, like the drawer of a cabinet. The tank may be withdrawn from beneath the base 6 sufficiently to allow the pigment supply to be replenished, from time to time, notwithstanding the fact that,

as shown, the tank cannot ordinarily be fully withdrawn.

Above the pigment supply tank, the body portion 5i of the base member has an opening I02 roll. The face 25" is spaced apart from the pattern plate a distance determined by the thick ness of the layer of pigment it is desired to place on the pattern plate. This distance may be varied, as will be hereinafter shown.

The tube is supported in vertical position by a rigid arm 32 extending laterally from the tube and having at one end a clamping yoke I08 embracing the post II, which supports one end of the pattern roll supporting arm 96. The adjustment to determine the .distance between the face 25" of the tube and the surface of the pattern roll, may be effected by a set screw 34 supported in a suitable post 33 back of the tube, the screw having its working end bearing against the tube, as shown in Fig. 3.

The pigment lifting screw 28 is preferably formed, as shown in Fig. 3, wherein it will be seen that the thread faces which are uppermost are substantially flat, while the under faces of the screw threads are steeply beveled to provide a coarse thread. The screw fits the inside surface II2 of the tube with very little clearance, the surface of the tube being broken at one side of the tube by reason of the face 25" intersecting the cylinder on which the inside surface I I2 is formed. This leaves an elongated opening substantially the length of the pattern roll through which the pigment carried up by the screw is spread onto the pattern roll.

The screw 28 has a bearing at its lower end which, as shown, comprises a removable apertured insert 29 of suitable bearing forming material, the aperture receiving the reduced end IIG of the screw. At its upper end, the screw has a reduced shaft portion 28 which extends through a suitable bearing insert III held in place by a cover plate II8. At its upper end, the shaft 28' carries a spur gear 30, which meshes with a spur gear 3| surmounting and fixed to the pattern roll driving shaft I. When the pattern roll is taken out bylifting the same upwardly, with the cross bar 86. as described, the gears are simply slid out of mesh.

In a graining machine wherein the graining rolls are vertical, or nearly so, the matter of reclaiming the used pigment material presents quite a problem. As shown, there is a continuous wall effect 230 rising from the base 6 and surrounding the pattern roll the transfer roll and pigment applying device. Within the wall is a substantial depression 23I which receives all the pigment materialscraped or otherwise ejected from the rolls and which conveys this pigment material back to the pigment supply tank 26. Preferably, the floor of the depression slopes generally toward the ope ing I02 through which the screw tube 25 extends loosely.

To favor the discharge of used pigment toward the opening and to prevent accumulation of pigment beneath the pattern roll, the latter may have a depending wiping blade 235, as shown in Fig. 3. The wiping blade is arranged to contact with the floor of the depression formed by the wall 230 to urge the pigment material lying upon the bottom of the depression toward the opening I02. The blade 235 may be arranged at an angle in accordance with the rotation of the roll I, as indicated in broken lines in Fig. 1.

The pattern and transfer rolls are equipped with scraper blades and it is highly desirable, if not essential, to reciprocate ti 2 scraper blade which contacts with the pattern plate of the pattern roll so as to prevent wearing grooves in the etched surface thereof. It is practically essential to separate the scraper blade of the transfer roll from this roll whenever the machine is left standing idle so as to prevent the scraper blade from leaving a permanent depression in the transfer roll surface.

The scraper blades are shown at 40 and I, but further description is omitted here, as they are fully described in our co-pending application, Serial No. 406,018.

The platen or pressure roller 3 may be supported adjacent the transfer roll by a swingable arm I00. The arm may be pivotally mounted at I on the frame 5. The free end 'of the arm may be provided with a suitable handle I01.

While we have shown in detail a machine operating on the offset printing principle; that is to say, with a pattern roll carrying a primary pattern element, the etched plate, and a transfer roll for taking the pigment from such pattern roll, it is obvious that, insofar as the general arrangements are concerned, thetransfer or composition roll may carry the pattern. In such event, the pigment applying device would operate directly on the transfer roll and the pattern roll would be omitted.

We claim:

1. A mechanism for supplying ink material to a substantially vertical printing member, comprising means for feeding the material along a vertically extending tube adjacent the periphery of the member and means for spreading the material directly from the tube on the member through side opening in the tube.

"2. An apparatus for supplying liquid pigment material to a substantially vertical graining roll, comprising a vertically extending tube having an opening in its side wall, means for feeding the material upwardly within said tube adjacent the roll and spreading the material directly on the roll through the side opening in the tube.

3. In a graining machine, a graining roll arranged on a substantially vertical axis, means for driving the roll, a pigment supply device comprising a container for pigment, a tube alongside said roll and means to force pigment from the container along the tube; the tube having a slotted elongated vertical opening adjacent the roll through which the forced pigment is spread ontd the roll.

4. A pigment applying device for a graining roll, comprising, a pigment conveying tube adapted to be positioned adjacent the roll substantially parallel to the axis thereof, said tube having an elongated through opening in the side thereof adjacent the roll and having a widened face adjacent the opening substantially parallel to the general 'ro'll surface, means to adjust said face toward and away from the roll, and means to force pigment material along the tube.

5. In a graining machine, wherein there is a substantially vertical pattern roll, pigment supply means below the roll, a tube having one end communicating with said pigment supply, a lift screw in the tube, and means for driving the screw, the tube having an opening adjacent the roll through which the pigment material is spread directly onto the pattern roll.

6. A pigment-applying device for a graining roll, comprising a pigment-conveying tube adapted to be positioned adjacent the roll and substantially parallel with the axis thereof, said tube having an elongated opening in the side wall thereof, said tube being so positioned that the periphery of the roll projects into and substantially closes the opening in said tube, and means to force pigment material along the tube.

'7. A pigment-applying device for a graining roll, comprising a pigment-conveying tube adapted to be positioned adjacent the roll. substantially parallel with the axis thereof, said tube having an elongated slot in its side walls, the walls of the slot being substantially parallel with 5 the axis of the rolland arcuately shaped to substantially conform with the general contour of said roll.

8. A pigment-applying devicefor a graining roll, comprising a pigment-conveying tube adapted to be positioned adjacent the roll substantially parallel with the axis thereof, said tube having an elongated opening through the side thereof adjacent the roll, means to adjust said tube to- Y ward and away from the roll, and means to force 5 pigment material along the tube.

GUIDO. voN WEBERN. EDWARD WILLIAM

Images