US584787A - Duplicating or stencil printing machine - Google Patents

Description

3-Sheets-Sheet 1.

(No Model.)

H. W. LOWE. DUPLIGATING 0R STENCIL PRINTING MACHINE No. 584,787.

Patented June 22, 1897.

.Wifizeas es,

(No Model.) I 3 Sheets-41mm; 2.

H. W. LOWE.

DUPLIGATING 0R STENGI L PRINTING MACHINE. No; 584,787. f Patented June 22, 1897.

lJNrrnn STATES PATENT Orrrcc.

HARRY WV. LOYVE, OF OMAHA, NEBRASKA,,ASSIGNOR OF ONEHALF TO JOHN G. CORTELYOU, OF SAME PLACE.

DUPLIOATING OR STENCIL-PRINTING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 584,787, dated June 22, 1897. Application filed August 27, 1896. Serial No. 604,096. (No model.)

To (tZZ whom it may concern:

Be it known that I, HARRY IV. LOWE, a ciiizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements in Duplicating or Stencil- Printing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the'art to which it appertains to make. and use the same.

This invention relates to an improvement in duplicating or stencil-printing machines; and it is embodied in the construction and arrangement of parts of the machine illustrated in the accompanying drawings and hereinafter described and claimed.

The invention is designed an improvement 011 that class of machines wherein a movable member is employed, which member carries a stencil and is equipped with means for applying ink to the stencil.

The invention, generally speaking, consists in improved means for carrying the stencil, means for regulating the extent of the prin ting interval, improved means for applying theink to the stencil, and, further, in means, mechanisms, and features, whereby the machine is rendered perfect, easy, and positive in operation.

In the drawings forming a partof the specification, and in which like letters of reference designate corresponding parts in the different views, Figure 1 is a side elevation of the machine. Fig. 2 is a front elevation showing parts in section. Fig. 3 is a central longitudinal section. Fig. 4 is a similar view showin g the machine with its actuating parts in a position opposite that shown in Fig. 3. Fig. 5 is a detail section taken on the line 5 5, Fig. 1. Fig. 6 is a detail section on the line 6 6 of Fig. 4; and Fig. 7 is a detail section on the line '7 '7 of Fig. 2, looking to the left.

In the drawings, A designates the base, and B 13 the vertical supporting-frames located on opposite sides of the base. The frames l3 B'lare formed with the horizontal top bars I), connected with each other at or near their centers by a shaft or cylindrical bar 0, which is. held in any convenient manner fixedly against rotation.

On the shaft O at opposite ends are loosely mounted the wheels or spidersD D, each having the i nwardly-extending marginal flanges D and being rigidly united or connected together by the cross-bars (Z (1, located at substantially diametrically opposite points at the periphery of the wheels. The bars (I d have the inwardly-extending flanges d thereon, through which suitable screws are passed into the metal of the wheels, thus forming the securing means between the bars and wheels. The bar (1 is formed with a longitudinal channel in its outer face, into which the end of a stencil supporting and carrying plate E is bent, which plate extends from bar to bar. v

d designates a clamping-bar located in the channel over the end of the steneil-carrying plate. This bar is by preference removable and is held in place so that it can be easily detached by the locking-buttons F, one at I each end of the bar, each having a flanged periphery f, formed with a recess or cut-out portion f. The buttons are pivoted on the sides of the wheels by the pins f and they are arranged directly in line with the channel, so that When the openings or cut-out portions f are opposite the ends of the channel the bar can be forced down below the flanges f. The buttons are then turned, bringing the flange over the end of the bar, which is thereby securely locked in place. The purpose of making the bar (Z removable is to permit of placing the end of the stencil pad or cloth and the end of the stencil, when desirable, in the channel and clamping the same there.

The bar 01 is formed in a manner similar to that of bar (1, with the exception of the channel, which is of a Width substantially twice that of the'channel of bar d, for the purpose of accommodating two clamping-bars, which are designated byee. The bar 6 is clamped in place by the buttons F in a manner similar to the bar (l while the bar 6 is secured in place by screws e B y this means the stencil cloth or pad can be secured by the bar 6, while the front of the sheet of stencil-paper can be independently secured by the bar 6. The stencil supporting or carrying plate E is conveniently formed of perforated metal of sufficient strength or stiifness to maintain its shape. It is secured at its ends by the bars 6 61 as above stated, and preferably along its edgesby screws or other means directly to the wheels. It is, however, to be understood that the plate can be secured to the wheels in any convenient or desirable manner, it being necessary only that the same be held firmly on the wheels. By the employment of the plate E a firm even support for the stencil is provided and on which a pad or cloth can be placed and held, it being desirable in this class of machines to have a yielding surface against which the stencil rests, inasmuch as the stencils are generally very thin, being usually constructed of waxed paper. I have not shown the cloth or pad referred to, but have made the reference more particularly for enlarging on the use and importance of the carrier-plate E.

On the inner faces of the wheels D D opposite the carrying-plate are the inwardlyextending flanges or ledges G, the same being parallel with the flanges on the periphery of the wheels and located a short distance inwardly therefrom. At the ends of the flanges are formed inclined webs g, the inner portions of which are formed by the inner edges of the bar-flanges (Z The webs, ledges, and flanges of the wheels form continuous tracks having a concentric and eccentric section for purposes presently to be explained.

The carriage formed by the construction described is free to rotate on the shaft or bar 0, and to provide aconvenient means for ro tating the same I preferably mount a short shaft h in a bearing at the front end of the top bar of frame B. On the outer end of this shaft is keyed a handle h and on the inner end is keyed or otherwise fixedly secured the pinion 79, which meshes with a gear H, adjustably secured to the outer face of the wheel D, the same being loosely supported on the shaft 0. In the gear H is formed a curved elongated slot H, through which a screw-bolt 72 is passed, the latter engaging in a threaded chamber of a lug 7L on wheel D. By tightening the screw it the Wheel H is tightly held against the lug and wheel. A series of blocks or lugs 7L5 may be employed to form rests for the opposite orother portions of the gear when tightened.

Fixedly secured on the hub of the gear II is a cam K, the active face of which is proportioned in length so that it will act for a period equal or substantially equal to that of one-third of the movement of the carrier. On the inner face of the gear is secured a pointer H which extends out to or near the periphery of the carrier and is designed to indicate the position of the heading on the stencil.

L designates-the inking-roll, located within the carrier and mounted on a shaft Z, which carries at its opposite ends the rolls or wheels Z, located adjacent to the carrier-wheels D D and arranged to travel on the tracks formed on the wheels as the carrier is rotated. As the inking-roll engages the inner face of the perforated plate, itserves the dual purpose of distributing the ink as well as positively forcin g the ink through the perforations.

The inking-roll is by preference held from outward movement by the wheels Z engaging the track and from inward movement by the yieldingly supported rods m, which have forked outer ends fitting over the roll-shaft. These rods m pass through arms 0 0, formed on brackets O, which are adj ustably secured on the shaft 0 against rotation by set-screws 0 On the rods "m are the coiled springs it, their lower ends being fixedly secured to arms 0, while their upper ends pass through the arms 0 and are in any convenient manner loosely secured to nuts a, threaded on the ends of the rods, so that as the nuts are adjusted up or down on the rods the tension of the springs will be correspondingly varied.

The inking-roll, as shown in the drawings, is located at the bot-tom of the carriage; but it is often found desirable to apply the ink at points above or to one side of the center, and it is also often necessary to have the roller at an exposed point beyond the stencil when applying ink thereto. By making the brackets O adjustable the position of the roll can be readily changed.

Below the carriage is located the feeding and impression roll P, mounted on a shaft 19, which has its ends journaled in semicircular grooves 19, formed in the upper edges of the swinging arms P P which are pivoted at their rear ends to the frames B B. The arms P P extend forward to a point adjacent to the front of the machine, and they have their forward ends bifurcated at 10 The crossbar q of a crank-shaft Q passes through the bifurcations of the arms. The shaft Q is journaled at opposite ends in the frames and at one end is provided with a handle q. R designates coiled springs connected to the forward portion of the arms P P and having their upper ends secured to screws 19 which pass through brackets 19 on the frame and are capped by nuts 19 By this means it will be readily understood that the tension of the springs may be varied.

On the upper edge of the arm P at or near its center is formed the upwardly-projecting lug R, having a forwardly-extendin g end located directly over the bearing for the roll P. On the forwardly-extending end is secured a projection R7, having a vertical opening atherein and a set-screw r passing longitudinally through its end. In the opening 1 is placed the lower end of a link R the same being secured and held, but capable of ad justment, by the set-screw. The upper end of the link carries a block S, the same being held thereon by set-screws 8. On the block is formed a short shaft (shown in dotted lines, Fig. 5) which carries an antifriction-rolls arranged in the path of the cam K and with which the same engages during rotation.

To guidethe link R at post T is formed on the frame B, which has a flange at its upper end through which the link passes.

By the employment of the link and cam above referred to it will be seen that as the cam presses the link down the arm P is pressed down, which in turn rocks the cranklIO shaft Q, which causes a simultaneous movement of arm P thus lowering the roll P evenly. It will also be noticed that the radial length of the cam K is such that the down movement of the forward ends of the arms P P is insufficient to cause the crank-shaft to rock from a horizontal to a Vertical position, and thus lock the arms down, as will be seen by referring to Fig. 1, the dotted lines indicating the throw of the shaft by the cam. However, the movement of the crank-shaft can be so timed, through the adjustment of the link R that at each revolution of the carrier the feed or impression roll will be locked against up movement.

WVhen the adjustment is as shown in Fig. 1 and it is desired to hold the roll Pdown out of the path of the stencil, it is only necessary to throw the crank-shaft down to a deadcenter by using the handle thereon.

U designates a tilting and removable feedtable resting on a cross-bar a of the frame and having finger extensions u at its forward end. The table is held from longitudinal movement by having lugs a secured in its opposite sides, (shownin dotted lines, Fig. 3,)

which work in' U-Lshaped brackets V, cast on the inner face of the frames. To limit the upward movement of the inner end of the table, set-screws v n are passed through the tops of the brackets and extend down, so that the lugs u will engage therewith. By this adjustment the fingers on the inner end of the table can be properly arranged, so that they will be out of contact with the carrier as Well as in the proper relation to the plane of theupper face of roll P.

\V designates a receiving-tray having an up turned rear end and lateral hooks in at its forward end. These hooks take over U-shaped wire guides W, secured to the base adjacent to the frames. The receiving-tray can'by this means be moved in, as shown in Fig. 3-, or out, as shown in Fig. 1, in which latter position it is in proper place to receive the printed copies as they leave the machine.

In operation when the impression-sheet is properly placed on the table and a stencil has been properly adjusted on the carryingplate the pointer is then adjusted by moving the gear until the former registers with the commencement of the heading of the stencil sheet. This adjustment moves the cam to a point where it will act on the link R and force the roll P down, retaining it in such a position until theheading of the stencil is immediately between the roll P and inking-roll, at which moment the cam will leave the friction-roll of the link R and the springs on arms P P will elevate roll P" and cause the impression to be made without acting on the plain part of the stencil above the heading. The carrier having turned, the sheet is printed, and it is then deposited in the tray. During the movement of the carrier the inking-roll is first raised by the in clines and ledges on the wheels. It is then lowered into position by the springs of the rods m, and for the rest of the movement of the carrier the roll travels on the perforated stencilcarrying plate, the pressure forcing the ink through the perforations.

The plate, as will be seen, acts as a pressure roll, thus avoiding the necessity of employing a separate pressure-roll to act in conjunction with the feed-rol-l.

When it is desired to remove the inkingroll, it is only necessary to lower the same and then raise the rods m until theirforked ends escape the roll-shaft.

When the stencil is attached at one end only, the ink will cause its free endto adhere to the pad.

It is thought the operation of the other features will be fully understood from the foregoing description.

I am aware that various changes in the construction and arrangement of the parts can be made and substituted for those herein shown and described without in the least departing from the nature and principle of the invention;

Having thus described the invention, What is claimed as new, and desired to be secured by Letters Patent, is-

1. In a duplicator, the combination with a base, of a rotary open-work carrier thereon, comprising two wheels, bars connecting the wheels, a perforated stencil-carrier and pressure-plate fixed to the wheels,-and means for applying ink to the inner face of the plate.

2. In a duplicator the combination with a supporting-frame, of a rotary open-work carrier mounted thereon, comprising end-supporting members, a segmental perforated stencil-carrier and pressure-plate secured to the supporting members, and means for securing a stencil on the plate, an inking device within the carrier, and means for rotating the carrier.

In a duplicator, the combination with a rotary carrier, consisting of an open frame, of means for rotating the carrier, a perforated stencil carrier and pressure-plate secured to the carrier and extending around the same a distance substantially equal to the length of the stencil-sheet to be used, and an ink distributing and forcing device within the carrier.

4. In a duplicator, the combination with a rotary frame, of a perforated stencil carrying and supporting plate on the frame, a padclamp, and an independent stencil-clamp at the edge of the plate.

5. In a duplicator, the combination with a rotary frame comprising end sections and channeled bars connecting'the end sections at different points, of a perforated stencil carrying and supporting plate on the frame, removable clamping-bars located in the channels, and means for retaining the bars in place.

6. In a duplicator, the combination with a rotary frame comprising end sections and channeled bars connecting the sect-ions, of two independent clamping-bars in one of the channeled bars, and a single clamping-bar in the other channeled bar.

7. In a duplicator, the combination with a feed-roll, of a pivoted carrier, a perforated or open-work stencil-supporting section on the carrier, the same serving as a compression roll or member acting in conjunction with the feed-roll to produce the impression, and an ink distributing and forcing device within the carrier.

8. In a duplicator, the combination with a rotary carrier, of a gearing for rotating the same, means for adjusting the gearing, comprising a crank and pinion, and means for securing the gear in adjusted positions, a feedroll, and means associated with the roll actuated by said gearing to vary the relative positions between the carrier and roll..

9. In a duplicator, the combination with a rotary carrier, of a feed or impression roll yieldingly supported beyond the carrier, a cam carried by the carrier, an adjustable connection between the cam and roll, means for rotating the carrier and means for lockin g the roll in an inactive position.

10. In a duplicator, the combination with a rotary carrier, of a yielding supported roll beyond the carrier, an adj ustable' extension on the roll-support, a locking device for holding the roll in an inactive position and means on the carrier for engaging said extension for moving the roll outward.

11. In a rotary duplicator, the combination with a rotary carrier,of spring-supported arms below the carrier, a roll carried by the arms, a lock for the arms, a projection on an arm, a cam on the carrier, and an adjustable extension on the projection arranged to be engaged by the cam.

12. In a rotary duplicator, the combination with a rotary carrier, of spring supported arms below the carrier, a roll carried by the arms, a projection on an arm, a cam on the carrier, an adjustable extension on the projection arranged to be engaged by the same, and a crank for simultaneously moving both arms.

13. The combination with the carrier, of the spring-actuated arms below the same, a roll carried by the arms, and a crank loosely engaging the ends of the arms having a handle thereon.

14. In a rotary duplicator, the combination with the stencil-carrier, of arms pivotally supported below the carrier, springs for maintaining the arms in position, an extension on one of. the arms, a slotted projection on the extension, a link adjustably secured in the slot, a block on the link, an antifriction-roll on the block, and a cam on the carrier engaging the roll, substantially as described.

15. In a duplicator, the combination with a rotary carrier, and means for rotating the same, of a perforated stencil-holding plate on the carrier, an impression roll or device, and an inking-roll, a stationary support for the inking-roll, and means for moving the roll out of the path of the holdingplate, substantially as described.

16. In a duplicator, the combination with a rotary carrier consisting of an open frame, of means for rotating the carrier, a segmental stencil-holder on the carrier, an impression device and an inking-roll stationarily mounted relative to the carrier, means for adjusting the inking roll to engage the stencilholder at different points, and means for moving the roll radially, substantially as described.

17. In a duplicator, the combination with a rotary carrier, of a stencil-holder mounted thereon, an impression-roll, means for driving the carrier, and an adjustable yieldinglysupported inking device arranged to engage the inner face of the stencil-holder, substantially as described.

18. In a duplicator, the combination with a rotary carrier, of a perforated stencil-holder secured on the carrier, means for securing a stencil on theholder, means for applying ink to the inner face of the perforated holder comprising a radially-adjustable roll, and an impression-roll.

10. In a duplicator, the combination with a rotary carrier having a stencil-holding section, of a yielding inking device and a yielding impression device, and means 011 the carrier for moving the inking and impression devices out of the path of the stencil-carrier section of the carrier.

20. In a duplicating-machine, the combination with a frame,.of a rotary carrier, a stationary shaft on which the carrier is mounted, tracks on the carrier, adjustable brackets on the shaft, rods yieldingly supported on the brackets, and an inking-roll mounted on a shaft and held in engagement with the track by the rods.

21. In a duplicator, the combination with the rotary carrier, of a stationary shaft on which the same is mounted, brackets on the shaft, rods slidingly engaging with the brackets, springs on the brackets engaging the rods, and an inking device carried by the rods.

22. The combination with the frame, the

rotary carrier and feed-roll, of a horizontal support on the frame in advance of the roll, inverted-U-shaped brackets on the frame in the rear of the support, set-screws passing through the brackets, and a table loosely mounted on the supports and having transverse pins normally resting on the brackets.

23. The combination with a carrier, and feed or impression device, of U shaped guiderods below the same extending from front to rear of the machine, and a tray loosely connected to said guides.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY LOWE.

\Vitnesses:

L. G. FEENEY, E. H. MAYHEW.

IIO

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