US720629A - Printing and graining machine. - Google Patents

Description

No. 720,629. v PATBNTED FEB. 17, 1903.

A. H. SHERWOOD.

PRINTING AND GRAINING MACHINE.

APPLICATION FILED JUNE 4, 1902.

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PATENT PRINTING AND G RAINING MACHINE.

SPECIFICATION forming part of Letters Patent No. 720,629, dated February 17, 1903. Application filed June 4,1902. Serial No. 110,188. (No model.)

To all whom it may concern.-

Be it known that I, ALFRED HARRY SHER- WOOD, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Printing and Graining Machines; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap pertains to make and use the same.

My invention relates to improvements in printing or graining machines, and more particularly to machines for printing or graining the surfaces of moldings, strips of lumber, the sides of packing-boxes, and other like articles; and its object is to provide the same with improved means for engaging the stock with the printingcylinder and improved means for driving the various parts, and to provide the device with certain new and useful features hereinafter more fully described, and particularly pointed out in the claims. I

Reference being made to the accompanying drawings, Figure 1 is a side elevation of a machine embodying my invention; Fig. 2, a front elevation of the same viewed from the right of Fig. 1; Fig. 3, a plan view of the same; Fig. 4, a detailin vertical section of the color-distributing means, taken on the line 4 4, Fig. 3; Fig. 5, a detail of the means for press-t ing the stock in contact with the printing-cylinder, shown in section on the line 5 5 of Figs.

1 and'2; and Fig. 6, a detail of the means for engaging and disengaging the color-distributer with the printing-cylinder.

Like letters refer to like parts in all of the figures.

A represents any suitable frame to support the various working parts of the machine; 13, a shaft extending across the top of the frame and provided with suitable journalbearings B, a driving-gear on this shaft engaged by any suitable driving means to operate the machine, and O the printing-cylinder, preferably having a suitable elastic printing-surface. The pitch diameter of this gear B is the same as the diameter of the cylinder 0.

The means for applying the color, ink. or paint, to the printing-cylinder consists of a train of distributing-rolls D, D, and D. The

rolls D and D are journaled in a suitable frame E, and the roll D is journaled in bearings G, adjustably mounted on levers G, and said levers are provided with adjustable weights G and pivoted to the frame E at one end. This roll is preferably provided with an elastic surface. Beneath the roll D and partially inclosing the same is a reservoir F A scraper F engages tical axis E and in proper position to engage the roll D with the surface of the printingcylinder 0. The other end of the arm E is pivoted to the frame atE and is moved toward the printing-cylinder O by means of a bellcrank lever N, attached to the arm E"by a rod N and provided with an adjustable weight N.

'To operate the distributing-rolls, the rolls D and D-" are connected by a train of gears D', and the roll D is driven by a pinion B, engaging the gear B and having a pitch diameter the same as the diameter of the roll D and mounted on a shaft connected to the roll D by means of a telescopic shaft H, connected at its respective ends by universaljoint couplings l to'the pinion-shaft and the roll D.

This scraper is pivoted to the To hold the roll D out of contact with the cylinder-C, a lever 0 is pivotally attached to the lever N to swing laterally and engage a stop 0, provided with a shoulder O to engage the lever O and hold the same in a depressed position, whereby the arm E is moved away from the cylinder 0 and held out of contact with the same.

To properly engage the stock. with the under side of the printing-cylinder O and to move the stock at'the' same rate as the sur-' face of the cylinder, I provide a table J, supported upon aslidev K, vertically. movable in ways A in the frame and having brackets K, upon which the table is pivotally supported upon bolts K, arranged at right angles to the axis of the printing-cylinder. The slide K is supported by a lever L, fulcrumed on an adjustable slide M and connected to the brackets K by a rod L and provided with an adj ustable weight L. The slide M is adjustable in the ways A by means of ascrew M, journaled on the frame and engaged with a nut M on the slide M and provided with ahandwheel M to turn the screw. Journaled on the table J and projecting through the same to engage the stock and move the same forward under the cylinder 0 is a roll J, driven by means of a pinion B, engaging the gear B and mounted on a shaft connected to the roll J" by means of a telescopic shaft II, attached at its respective ends to said shaft and roll by means of universal-joint couplings I. The pitch diameter of this pinion is the same as the diameter of the roll J.

The operation of my device is as follows: When the lever O is released from the stop 0', the weight N will press the roll D in contact with the cylinder 0 with more or less force, according to the adjustment of said weight on the bell-crank N. The frame supporting the roll D will turn on the axis E and adapt the position of the roll to any irregularity of the surface of the printing-cylinder G, and the weight will yieldingly maintain contact between the rolls, and thus apply the color to the latter evenly throughout. The roll D" will take up the color from the reservoir F, and the scraper F will remove the color from the roll more or less completely, according to the adjustment of the weight F on the lever F", and thus determine the amount applied to the printing-cylinder. The roll D will automatically adjust its bearings G on the levers G to equalize the contact of said roll with the rolls D and D, and its pressure upon said rolls can be determined by adjusting the weights G on the levers G. The device is thus readily and automatically adjusted to work properly. It is also instantly thrown out of action and restored to action again by operation of the lever O. The telescopic and universal-jointcoupling connections provided by the shafts H and joints I permit of the foregoing movements and adjustments without interfering with the proper transmission of motion to the roll D, and the train of gears connecting the rolls D and D insure their proper relative rotation. The stock to be printed or grained is inserted between the printing-cylinder O and the table J with the side to be printed uppermost, where it can be readily seen. The pitch diameter of the gear B and the printing-cylinder 0 being the same and so, also, the pitch diameter of the pinions B and B and the rolls J and D insure proper forward motion of the stock between the printing-cylinder and said roll and proper rotation of the rolls for applying color to the printing-cylinder. The guide J'properly directs the stock in its passage through the machine. The stock is yieldingly pressed against the surface of the printing-cylinder O by the action of the lever I; and the amount of pressure determined by adjusting the weight on said lever, and by turning the screw M the entire supporting mechanism is adjusted for various thicknesses of stock. By tightening the bolts K the table may be fixed at any suitable inclination to properly operate on molding or other material thinner at one side, or by leaving the said bolts loose the pivoted table J will automatically adjust to any variation in thickness of stock at the sides by turning on the pivots. It also automatically adjusts to slight variations of total thickness of stock, thus insuring uniform contact of the stock and the printing-cylinder 0. The telescopic and universal-jointcoupling connections between the pinion B and the roll J permit of free adjustment vertically and pivotally of this table and roll without interfering with the transmission of motion to the roll.

It will thus be seen that by various adj ustments of the various weights I am able to readily and accurately control the various pressures required to do the work, and by the various pivotal adjustments of the parts I am able to insure uniform and automatic adjustment of the contact of the different portions of printing-surfaces with the color-distributing roll and with the stock, whereby uniform results are produced regardless of the stock or surface of the same or of the printing-cylinder.

In accordance with the requirements of the Office the mechanism for applying color to the printing-cylinder is not claimed herein and is reserved for a separate application, filed September 19, 1902, Serial No. 124,019.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination of a printing-cylinder, a table freely movable toward and from the cylinder, and pivoted on an axis at right angles to the axis of the cylinder, and means for yieldingly moving the table toward the cylinder.

2. The combination of a printing-cylinder, a slide freely movable toward and from the cylinder, a table pivoted to the slide on an axis at right angles to the axis of cylinder, a

lever to move the table toward the cylinder,

and an adjustable weight on the lever.

3. The combination of a printing-cylinder, a table mounted on pivots movable toward and from the cylinder, a lever pivoted on an adjustable support and connected to the table, and an adjustable support for the lever.

l. The combination of a printing-cylinder, a freely-movable slide,a table pivotally mounted on the slide, an adjustable slide,a screw for adjusting the same, a lever fnlcrumed on the adjustable slide,and connected to the movable slide, and an adjustable weight on the lever.

5. The combination of a printing cylinder, a freely-movable slide having brackets, a table pivoted to the brackets, an ad justablo slide, a screw to adjust the same, a lever fulcrumed on the adjustable slide, an adjustable weight on the lever, and a rod connecting the lever and brackets.

6. The combination of a printing-cylinder, a shaft supporting the cylinder, a gear on the shaft, a table pivoted on an axis at right angles to the cylinder, a roll journaled on the table and projecting through the same, a pinion engaging the gear, and a telescopic shaft and two universal-joint couplings to connect the pinion and roll.

7. The combination of a printing-cylinder, a shaft supporting the cylinder, a gear on the shaft having a pitch diameter the same as the diameter of the cylinder, a table freely movable toward and from the cylinder, a pivoted lever to move the table, an adjustable weight on the lever, a roll journaled in the table and ing the gear and having a pitch diameter the same as the diameter of the roll, and a telescopic shaft and two universal-joint couplings 7 between the pinion and roll.

8. The combination of a printing-roll, a freely-movable slide, a table pivotally supported on the slide, a lever to move the slide, an adjustable slide on which the lever is pivoted, a weight on the lever, a screw to adjust the last-named slide, a roll journaled in the table, a shaft supporting the cylinder, a gear.

\ .on the shaft, a pinion engaging the gear, and a telescopic shaft and two universal joint couplings connecting the pinion and the roll. 9. In aprinting or graining machinea printing-cylinder mounted on a shaft, a gear on the shaft, means for applying color to the printT ing-cylinder, said means being movable toward and from the cylinder, and pivoted on an axis at right angles to the cylinder, and also having a roll engaging the cylinder, a pinion engaging the gear, a telescopic shaft and two universal-joint couplings connecting projecting through the same, a pinion engag= the pinion and said roll, a table movable toward and from the cylinder, and pivoted on anaxis at right angles to the axis of the same,

a roll journaled in the table, a pinion engag-' ing the gear, and a telescopic shaft andtwo universal-joint couplings connecting the pinion and roll.

10. The combination of a printing-cylinder, color-distributing means pivotally mounted on a support freely movable toward and from the cylinder, means for yieldingly moving the support toward the cylinder, means for moving and holding the support away from the cylinder, a table, a roll journaled in the table, a support pivotally connected to the table, means for yieldingly moving the support toward the cylinder, and means for operating the roll and distributing means.

11. The combination of a printing-cylinder mounted on a horizontal shaft, a gear on the shaft, a color-distributing roll engaging the cylinder, a frame supporting the roll and pivoted on a vertical axis, and mounted on a pivoted arm movable toward and from the cylinder, a bell crank lever and adjustable Weights to move the arm toward the cylinder,

a lever and stop to move and hold the arm away from'the cylinder, a slide freelyl movable toward and from the cylinder, a table pivoted to the slide, a lever and weights to move the slide, an adjustable slide supporting the lever, ascrew to adjust said slide, pinions engaging the gear, and telescopic shafts and universal-joint, couplings between the respective pinions and the color-distributing roll, and the roll in the table In testimony whereof I affix my signature in presence of two witnesses.

ALFRED HARRY SHERWOOD.

Witnesses:

LUTHER V. MOULTON, JENNIE M. SLOANE.

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