US37727A - reynolds - Google Patents

Description

4 SheetsSheet 1.

G. H. REYNOLDS. LITHOGRAPHIO PRINTING PRESS.

m. 37,727. Patented Feb. 17,1863.

4 Sheets-Sheet 2.

No.. 37,727. 7 Patented Feb. 17, 1863.

wk w g 6 r N QQ \s H mf c Q 7 W m N HQ U l o & gi w x h w 4 Sheets-Sheet 3.

G. H. REYNOLDS. LITHOGRAPHIG PRINTING PRESS.

N0.. 37,727. Patented Feb. 17, 1863.

4 Sheets-Sheet 4.

G. H. REYNOLDS.

LITHOGRAPHIG PRINTING PRESS.

No. 37,727. Patented Feb. 1'7, 1868.

507 ntzg press.

- pression.

UNITED STATES- PATENT OFFICE.

GEORGE H. REYNOLDS, OF NEW YORK, N. Y.

LlTHOGRAPHlC-PRlNTlNG PRESS.

Specification forming part of Letters Patent No. 37,727. dated February 17, 1863;

To all whom it may concern:

Be it known that I, GEORGE H. REYNOLDS, of New York, in the county and State of New York, have invented certain new and useful Improvements in Power-Presses for Lithographic Printing; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, in which;

Figure l is a side. elevation of my improved Fig. 2 is" a vertical section, taken in the plane indicated by the line S S in Fig. 3. Fig. 3 isan end elevation. Fig. 4 is a longitudinal section of the part which answers to the cylinder in ordinary typographical printing-presses. Fig. 5 is a view of a portion showing the arrangement for throwing the tympair into gear with the bed, this arrangement being adjustable, so that the bed may be made to make any desired number of movements under the .inking-rollersto cachim- Fig. 6 is, a longitudinal section of the dampening-roller. Fig. 7 is a section on the line S S in Fig. 4. Figs. 8 and 9 are views of detached parts of the apparatus for removing the sheet, drawn to a larger scale. Fig. 10 is a detail section of a portion of the ink-fountain.

Similar letters of reference indicate like parts in all the figures.

Many parts of my press are similar in their structure and function to parts of presses previously known.

First, the nature of my invention consists in a certain arrangement of parts for giving motion to the bed; second, also in a certain construction of the dampening-roller; third, also in a certain combination of devices for raising and lowering the dampening-roller; fourth, also in the mode of controlling the admission of water to the dampening-roller; fifth, also in a certain combination and arrangement of parts for supplying ink to the inking-rollers; sixth, also in certain means of operating the duct-roller; seventh, also in certain means of adjusting the extent of contact between the fountain roll and the duct-roller eighth, also in a certain application of springs to the doctor of the fountain; ninth, also in a certain combination and arrangement of parts foradjustin g the impression; tenth,also in the employment of certain lifting-pieces attached to the bed and adapted to lift the scraper at any required portion of the stroke; eleventh, also in a certain combination of parts for stopping the tympan-frame always in one position twelfth, also in certain means of starting the tympan-fraine at the return-movement of the bed; thirteenth to fourteenth, fifteenth, and sixteenth, also in certain combinations and arrangements of parts for operating the .said means of starting the tympan-frame at the proper time from the motion of the bed; seventeenth to eighteenth and nineteenth, also in certain combinations of parts for regulating the number of movements of the bedcorresponding to each impression; twentieth, also in certain means of removing theshcet from the tympa-n after it is printed; twenty-first, also in certain means for securing accurate register.

To enable others skilled in the art to make.

and use my invention, I will proceed to describe its construction and operation, by the the bed-plate A is hung a short shaft, 0, carryin g a gear, 0, which meshes into the pinion B and receives motion therefrom. One end of the shaft 0 extends. out through the side frame, A, and the other end is supported by a bearing in the flange of the bed-plate, near the center thereof. Exterior to this bearing a disk or crank-wheel, O is firmly fixed upon 0, and carries a wrist-pin, 0. Near the bottom of the frame A is hung a rockshaft, D, which receives a vibratory motion through an arm, D, connected by a link, (I), with the wrist-pin c on the crank-wheel 0 At each end of D is fixed an arm, D extending upward through slots in the bed-plate A. Upon the bed-plate are fixed two rails, A", and a six-wheeled truck, E, is fitted to traverse thereon, the wheels being provided with flanges tokeepthem upon the track. Links at connect the shaft of the central pair of truckwheels with the arms D, and through them the truck is caused to roll alternately back and forth to a limited extent upon thetracks A F is the bed of the press. It is made with two tracks on its under side, fitted to rest upon the wheels of the truck E, and run thereon, as represented. A rack, G, is fixed upon the center of the bed-plate A, and a similar one, G, is bolted to the under side of thebed F. A pinion, G is fixed upon the central shaft 01 the truck E, and adapted to mesh in both the racks G and G. The pitch-circle of this pinion has the same diameter as the bearing-faces of the truck-wheels, so that the several parts roll together harmoniously without sliding friction. As the truck is caused to roll along its track A ,the bed Fis compelled, by means of the racks and pinion G G G; to reciprocate with a velocity and extent of motion just double that of the truck, and with very slight friction. By this arrangement of parts the proper motion is given to the bed from a crank-shaft situated beneath the same, thereby rendering the machine very compact and convenient of access, at the same time that a smooth crank motion is imparted to the bed. The bed F is made in two principal parts,F and F, one above the other. The upper part, F, supports the stone, and has a series of projections fiextendingdown through holes in F. The under side of these projections f are beveled so as to form a series of inclined planes, as represented. Pieces FF, adapted to slide endwise within the bedF, are supported in. stirrups depending therefrom, and are titted with corresponding iuolinesf, as represented. These pieces F are adjusted by means of the screw f and nuts f There are two of these pieces, F with their screws and nuts, and they are caused to move together by forming bevel-gears upon the nuts and connecting them with a-crossshaft, f

and match-gears, as is clearly shown in Fig. The nutsf and shat'tf are supported in brackets bolted to the bed F, and the nuts are prevented from having any end motion by means of collars, as shown in Fig. 2. The shaft f is provided with holes orother suitable means of seizingand turning it at pleasure, and by its rotation the pieces F and the beveled fact-s f 4 are equally moved. By this motion of the faces 1*, under the faces f, the part F is raised or lowered to allow of the use of a thicker or thinner stone. 'The impression may also .be regulated by the same means, if desired, but I preferto regulate this by means hereinafter to be described, and to use the inclines only as-ameans of regulating the height of the part1? of the bed. The stone is fixed upon the part F by means of suitable clips, as represented. Upon each side of the bed F is bolted a piece, H, having racks thereon, as represented, and provided with dovetailed or undercut slots h h, for receiving certain stops and bearers which will be hereinafter described. Above the bed,.and so as to come in contact with the surface of the stone, are three inking-rollers. I supported in adj ustable bearin gs 'i, and so arranged that the bearing pieces may be readily removed from'the frame, and the rollers taken out for cleaning or any other purpose, and again be readily replaced. By means of the adjustable bearings 'i the pressure of the rollers I upon the stone may be regulated at will to suit the varying circumstances. Above the rollers I, and also hung in adjustable bearings, (not represented,) is a cylinder, J, which receives a constant rotary motion through the train of gearing. j k l, the shaft L receiving its motion through an oblique shaft, L, and bevel-gears I, from the main shaft 0. Between the rollers I and cylinder J are two other rollers, I, hung in two pieces, 2', which pieces are hung upon the ends of two arms, i fixed upon a shaft, 1?. These rollers I are so fitted and hung that they ma be caused to either lie in contact withthe cylinder J, as represented, or-be caused to assume positions in-' termediate between the rollers I and in contact therewith, the five rollers I and I forming a train of rollers equivalent in their action to a train ofgearing, the whole rolling to gether inharmony, and they assume either of these positions by rocking the shaft 1. This rocking motion is communicated to Ithrough an arm, 2' acted upon by stops k h, fixed in the slot h in the piece H. A weight, WV, is so fixed upon the shaft 1 as to balance the weight of the rollers I and their connections, and cause them to remain in either position indiiferen t] y. When the bed is at one extreme of its motion, the stop h pushes against the arm '6 and forces therollers I up against the cylinder J, and when the bed is at the other extreme of its motion the stop h presses against the same arm and forces them down upon the rollers I. When the rollers I are in contact with the cylinder J, they receive a supply of ink therefrom, andrwhen they are placed in contact with the rollers I they impart the supply of ink to them, and in" their turn the rollers l impart the ink to the design upon the stone. The cylinder J receives its ink from a fountain-roller, K, through a'ducte roller, M, which is mounted in arms m, fixed upon a shaft,'M, and so arranged that by the rocking of M the roller M may be brought alternately in contact with the cylinder J and the fountain-roller K. A spring, m, tendsto keep M always in contact with J, and it receives its motion in the other direction in the following manner: The fountain-roller Kreceives a continuous rotary motion through the gear 7:, and upon the shaft of this roller is mounted a cam, k, which acts upon a rolleriu the arm m upon the shaft M, thus forcing M over against K and holding it in contact therewith while the two roll together to impart the ink to M. The length of time in which the two roll in contact is regulated by' thelength of the concentric port-ion of the cam k. I make this cam with three divisions or steps, asrepresent'ed, whereby the time of its action sented, which may be replaced when upon the arm m may be varied to three lengths by simply slipping the arm m or the cam k longitudinally upon their respective shafts. The arm at is not rigidly fixed upon the shaft M, butis loose thereon. A spring,

m is attached thereto and rests upon a setscrew in the end of an arm or forked piece, m, which is keyed to the shaft M. By this arrangement the pressure of the rollerM upon the roller K may he graduated very readily, being at all times equal to the tension of the spring W. This is an essehtial point, as the proper taking-of "the ink from the roller K depends in a great measure upon the pressure of M thereon. The ductroller M is fitted with an endless spiral and follower in the usual manner to give it reciprocating end motion, and thus secure an even distribution of the ink. The fountain is composed of the rollerK ,and an shaped piece, K, hinged to the girt A of the frame A, and forced in contact with the roller K by setscrews K passing through A. These setscrews bear against sprin'gsk, (shown more plainly in Fig. 10,) which springs bear against the piece K, thus allowing it to yield to any inequality or eccentricity of the roller K, and thereby secure an even film of ink thereon. As it is difficult to construct the roller K perfectly true or to keep it so, owing to the wear of itself and its bearings, these springs kzare important in securing an even supply of ink. The piece K is grooved out on its edge and a doctor fitted therein, as repre Worh. "he ends K of the fountain are removable, and may be moved nearer to or" farther from the center, in accordance with the size and position of the designupon the-stone.

Immediately forward of the inking rollers I is another roller, N, for dampening the stone before inking. The construction of this roller is more plainly shown in Fig. 6. It consists of a hollow shell or tube,"N, on the interior of which are a series of annular flanges, n, with holes through the shell between these flanges, as represented. This shell surrounds asmaller tube, N, which acts as a shaft or axis for the roller, and is supportedin sliding'bearings so {that it may be lowered or raised to a limited extend. This tube N is pierced with holes between the flanges n, as represented, and is connected at one end by a packed joint with a tube, a extending upward to a fountain, N This-fountain has an airtight cover, and is titted with a small cock, n therein for the admission ofair. Another cock, nflisplacedin the pipe n, as represented. The exterior of N is covered with feltor other porous material. On water being poured in the fountain N, and the cocks and n opened, it flows into N and out through the holes therein into N and through the holes therein, wetting the covering of felt. The amount of water thus flowing into N may be regulated by the cock a but is much better regulated by the cock n the admission of air to the vessel N controlling,

in the well-known manner, the exit of water therefrom.

The flanges n serve the important purpose of equalizing the moisture in N in the following manner: Waterstands in the tube N, and at the holes therein, ready to drop the instant sufficient air is let into the fountain, when a drop exudes from each hole and falls into the recesses between the flanges a. As the roller N is revolved by the action of the press this water cannot at once run through the holes therein, but a little time .elapses before it escapes, duringwhich time it describes circles or spirals on the interior of N. If the roller N or the press stands inclined. from the horizontal, as will nearly always be the case, (more or less,) there would be a tendency in the water to run toward the lower portion, and what did not escape very soon through the pores would do so, thus creating an excess at the 'lower'end with a corresponding limited supply at the higher. By reason of the flanges n this condition cannot obtain in my improved roller, because all the water which falls between two flanges must of ne cessity escape through the pores between those flanges, and the moisture is thereby practically equalized. By this means and theemployment of atmospheric pressure to regulate the supply of water, the amount of moisture may be very delicately adjusted to the requirements of the work in hand, which is an essential point in nice lithographic printing. It is necessary that the stone be damped before being-inked, but not between the inking and the impressiomand to accomplish this object I cause it to be lifted out of contact with the stone on the return-movement of the bed after theink has been received. This is done as,

follows: On each end of the shaft 1, which extends through the frame for that purpose, is fixed an arm, 0, so constructed that while it is caused to turn with the shaft its effective length may be increased or diminished by means of the sliding box 0 and screw 0 These arms 0 have cam-shaped slots 0 which receive rollers fitted on the axial tube N of the roller N. The shaft I being rocked at each extremity of the motion of the bed, as before described, the cam-shaped slots 0 alternately raise and lower the roller N out of and into contact with the stone in the obvious manner. The amount of pressure exerted by the roller N upon the stone is regulated by the screws 0 and may be varied at pleasure to suit the rcquirements'of the work in hand.

I will now describe the devices for conveying the paper to and from' the stone and giving the impression. In the frame A, at the pointrepresented, is hung a shaft, P, in adjustable boxes, so that it may be raised or lowered as required. This shaft is fixed. or is notcapable of revolving, but is capable of a slight adjustment by means of the arms 1) and set-screws p. Fixed upon this shaft are two heads, P, between which are a series of antifrictional rollers, 12*, forming a sortof cylinder the covering 12..

fordistendin g the tympan-sheet in the same times be desirable to print two or more designs manner as in some previous presses. In slots upon one stone at a distance apart, and by 111 the bottom of these heads P, and extending using pieces Q of a proper length the pressbeyond the said heads, is the scraper-bar Q, ure of the scraper upon the stone may be reof the form represented. This bar is adapted lieved between the designs, if desired; or, if

to receive a slight vertical motion in the heads two designs are upon the. same stone and itv P, and is forced downward upon the stone by is desired to print from only one of them, the means of springs q, which have their hearing lifting-pieces Q may be made to relieve that against pins q, p lssing through the shaft P, portion of the stone on which the undesired as represented. .A piece, P having a series design is situated from the pressure of the of inclined faces, rests upon the top of the scraper, and consequentlyfrom theimpression. pins g and a similarly-shaped piece, P is It is necessary thatthe tympan-frame R placed upon P and is fitted to have an endshould revolve only in the forward direction, wise motion, which is communicated by means and that it remain stationary during thereof the screw W. A box, 1), surrounds these turrrmotion of the bed, and in order to accompieces P' and P and prevents their rising, so that when the piece P is moved endwise, by means of the screw 0, the tension of the sprir: gs g is increased or diminished at pleasure.

Exterior to the heads P, and fitted to turn loosely upon the shaft P, are two gear-wheels, R, fitted to mesh into the racks upon the pieces H on the bed and to receive motion therefrom. The tympan-frame R is bolted to these gears and revolves around the rollers 9?, carrying with it the tympan r and grippers 1", the grippers being opened to receive the sheets at the proper time by a cam, r, on the head P". Points 7' are placed in the tympan-frame to place the sheet upon for more accurate register. By placing these points upon the revolving tympan-frame, instead of connected with the feed-board, as is usually done, the register is independent of the accurate stopping of the cylinder, and consequently independentof the speed ofthe press. This is important in printin g in colors or where nice register is required. In order to lift the scraper Q for the passage of thetymp'an-frame .R beneath, and for the return-movement of the bed, cams Q, Fig 7, are attached to the wheels R and act on the rollers upon the end of the scraper-bar, the said cam being arranged so as to lift the scraper just before the bed completes its forward movement, and drops it again immediately after the grippers and tympan'frame have passed. This arrangement is common to '1 irevious presses, but it necessitates the action of the scraper during the whole width of the stone, even if the design covers out a small portion, thereby requiring more power and a greater wear upon the tympan and other parts just coincide with the secantplane of their than would be necessary to do the printing flattened side, audit is evident that they can required. To avoid this I employ adjustable in no ease, when the parts are properly adjustlifting-pieces Q, attached to the piecesHon the ed, pass beyond this position. As the planes chanical devices The wheels B have a portion of one side cut 011' in the line of a cord of the circle, so that when that side is down, or the cord parallel with the bed, the rack-pieces B may slide underneath R without gearing therewith, as represented in red in Fig. 5. There are the sa me number of teeth in the wheels R they are in gear the movement of the bed causes R to turn just one revolution, butthb entire motion of the bed is a iittle'greaterthan thecircumference of R or the lengthgo'f the racks H, and the-end of H beyond the teeth is formed into a plane, k slightly higher than the points-of the teeth, and with a short incline leading thereto, as represented. As the bed moves forward and the wheels R revolve, the plane portions of the said wheels come in con tact with these planes h and thus stop the further revolution of It, and as the bed moves on a little distance these planes k with their inclines, compel the wheels R to turn suflicien tly for the plane h to pass under theplane portions of the said wheels, and thus they are brought always to the same point, whether the press be moving fast-or slow. If thepress be moving fast, the momentum of R will tend to cause it to move too far, and it will then be checked by the planes k but if the press is moving slowly and the momentum of R is not sufiicient to overcome its friction, then the lastportio'n of its movement will be completed by the inclined approaches to the planes h, as above described. In either case the wheels R must come to a position where the planes h plish this-object I employ the following methat there are-in the'racks B, so that when I bed by headed bolts slidingin the slot h. These k are higher than the points of the teeth of pieces Q may be adjusted to lift the scraperQ the racks H, it is obvious that on the returnat any desired point of the motion of the bed movement these teeth'pass without engaging y acting upon projections q,provided for that the wheels R, and that they will continue to purpose, and hold it up until the camsQ come pass ack and forth thus until some means be into action. When a small design is put upon em'pioved to cause them to engage. I accomalarge stone, as may frequently be convenient, plish this by the following novel means: In by adjusting these pieces Q 1 0 the right point each of the wheels R, in the line of the radius only that portion of the stone containing the perpendicular to the secant-plane, I form a design receives the impression, and the power slot and fit therein a sliding piece of metal, 55,

' required or the wear of the press is the same i so formed that when projected to the proper us if a small stone were used. It may somc- I distance it shall constitute one tooth of the wheel, corresponding in position with a tooth which would have been there had the wheel been'complete or not flattened on that side. At the side of the wheels R and exterior thereto are movable pieces, S, Figs. 4 and 5,whi'ch embrace the shaft P, but may be moved up and down thereon. These pieces S have curved slots, 8 which receive pins s, projecting from the sliding teeth S, as represented, and they extend downward and take hold of wrist pins t in the face of disks T, which turn looselyon studs fixed in the frame'A. 'By turning these disks T the pieces S may be moved up and down, and consequently the sliding teeth S-into and out of the wheels B. When the-'teethS are thus moved out they engage the racks H, and thus motion is communicated to the wheels R and tympan-frame, but when the sliding teeth S are withdrawn into theirlslots the bed travels back and'forth without giving any impression. The disks T are oscillated at the proper time, to give the required motion tothe teeth S, by the following mechanism: A shaft, U, is hung in the frame A at the point represented. At either end of this shaft, within the frame A, is keyed an arm or disk, u, having a concentric slot therein sub tending an angle equal to the angular motion required for the disk, t. From a stud, u, playing loosely in this slot, a connection, t, extends to a wrist-pin, t, in the bottom of the disk T. On the end of the shaft U, and extra .rior to theframe A, are two pointed cams, V,

which act against spring-bars o, the cam compressing the spring one until it passes the point, when the recoil of the spring tends to continue the motion of the cam in the obvious manner. An arm, u is also keyed to the shaft U and adapted to be operated by an adjust-able stop or stud, ed, on the piece H, Fig. 2, and a handlever, u, is alsokeyed to the same shaft to enable it to be worked by hand when desired. Next to the disk u, Fig. 5, a ratchet wheel, u is fixed, and an arm, it is fitted to turn loosely on the shaft U, immediately adjacent thereto. This arm u carries a pawl, u, which is adapted to work in the teeth of the ratchet-wheel u as represented, A lever, w is hung on the frame A and adapted to be struck by an adjustable stud,

u", on the piece H, and a link connects this arm with the ratchet-lever a, as represented, so that motion is communicated to the shaft U by this train of levers from the bed F. The rack-piece H hits the lever to on its forward movement, pressing it down after it has been lifted through the lever 11 and studs a on the previous motion of the bed. A retaining-pawl, 14 prevents the return of U in the ordinary manner. When the shaft U is revolved. into the position shown in Fig, 5, the slot in uhas been moved so that its end strikes the stud u, and any further movement of 'U will cause correspondingmotion in the disk T, piece S,

and sliding tooth S. In this position the point of the cam V is just on the spring-bar o, and a slight motion farther will permit'the spring bar 2; to throw the shaft U through the remainder of its stroke, and thus protrude the teeth S, so that they will engage the racks H. It will be observed that this action must take place while the bed is at its extreme stroke under the inking apparatus, because the stud c is so situated that it must actuate the lever u and through that the shaft U while the bed is in thatposition, and as soon as it has moved the shaft U to a suificient. extent to pass the point of the cams V over the spring-"barsv, the springs on oimmedi'ately cause the'teeth S to protrude. As this is done the campiece a", on the disk u, liftsboth pawls u and a by means of pins which project therefrom from the teeth of the ratchet-wheel u These pawls are held in contact with the said teeth when in action by means of sliding spring-bars u, acting on inclines on the said pawls, as will be seen in Fig. 1. These same spring- ,bars tend also to hold the pawls out of contact withlthe said wheel when lifted by the earn a by entering notches therein, in amanner familiar to mechanics; The shaft U is therefore now free to revolve in the opposite direction, and when the bed has nearly made its forward movement, carrying with it the wheels R, the stud a strikes the lever a and turns Uin the opposite direction, but such motion does not affect the disks T and teeth S until it has moved the distance of the slots in u. As

these slots are equal to the angular motion of T, it follows that by the time T commencis to move the cams V have come into position where they are thrown forward by the sliding spring-bars o, and the entire motion of T and consequently of S is given by said springs. The stud u is set in such a position that this movement is made at just the right time to disengage the teeth S from the racks H at the proper point, which is just previous to the completion of the revolution of the wheels B. When the shaft U revolves in this direction, the cam al on the disk u, Fig. 5, strikes the pin in the pawl a and forces it down into the teeth of the ratchet-wheel u, thus compelling the arm a to move with the shaft U, and this arm strikes the pawl u at the end of the motion of U, and closes that also upon the teeth of a when the parts are again ready to turn the shaft U in the opposite direction. The stud a may be so set as to turn the shaft U the proper distance to protrude the teeth S at one motion of the bed, or it may be set so as to move it only a; part of such distance, and thus require several motions of the bed to each impression. This is an important feature, for it is necessary in doing fine work that the form should receive a large amount of rolling in order to properly distribute the ink. By my improved arrangement the amount of roll in g to each impression can be regulated to any desired degree of nicety, and made entirely automatic by simply adjusting the stud u". The prcssman may at anytime cause an im pression to be taken, or prevent such an ac tion, by turningthe shaft U by means of the hand-lever u, whichis conveniently placed for that purpose. Stops i attached to the frame, prevent the momentum of the disk T from carrying it beyond its proper position.

The means for removing the sheet from the tympan after it is printed are peculiar, and are as follows: Behind the tympan-cylinder, and supported in bearings attached to the frame, is a shaft, X, carrying a number of pulleys, m, which run in close, proximity to the tympan-frame B, when the latter is in that part of its revolution. The size of these pulleys is such, and they are so geared with a wheel, .10 fixed upon one of the wheels R, as represented, that their surface "elocity is exactly equal to that of the tyni pan, and the two roll together without friction, or would if they came in actual contact. Two or more of these pulleys, w, are constructed in the manner shown in Figs. 8 and 9, which are on a larger scale than the other figures. the pulley as represented, and a piece, as, fitted therein, which is narrower than the slot, and has a play in the plane of the revolution, and also a slight end play in addition thereto. On the exterior of the piece as is fixed a thin curved piece of steel, m extending over the solid portion of the pulley a0 and in thedirection the reverse of the motion of the pulley, the arrow indicating the direction of themotion. A spring, 00*, tends to keep the piece as always in the position represented in Fig. 8 at the forward part of the slot. and protruded from the pulley. In a proper position over the shaft X is another shaft and cylinder or roller, Y, running in contact with X, and

driven thereby, so that when .1." comes under.

the roller Y it is first held stationary while the wheel a: revolves until it has traversed the width of the slot, when w is forced under Y, thus closing the finger 00 down upon the surface of w. The forward edge of w is beveled to facilitate this action. geared to the wheel R that the fingers e in their revolution come just above the edge of the sheet as it is held in the gripper r, (see Fig. 9,) and recesses are provided in the tympan-frame for their reception. As the parts arrive at this position the piece so strikes the roller Y, and is thereby arrested in its motion, while the tympan, the sheet of paper, and the wheel or continue their motion. This causes the fingers x to be inserted between the sheet and tympanframe, and when they are compelled to pass under Y they are pressed down upon 00, thus holding the sheet fast. At this instant the grippers r are opened and release the sheet from the tyinpan, and the fingers w carry it between as and Y. As soon as the fingers 00 pass from underneath the roller Y, the spring 00 opens them and releases the sheet, but it is held by the pressure between as and Y and is compelled to move therewith. Endless tapes or hands z extend from, the pulleys X to a cylinder, Z, and the sheet is carried off thereon in the usual manner, and may be piled by hand or by the ordinary fly.

A mortise is made in The shaft X is so Operation: I have described the operation of most of the parts in connection with explaining their construction, but 1 will now proceed to describe the general operation of the" machine, or the mannerin which the printing is accomplished in the order of the successive stages thereof. Motion being communicated to the press by proper means, the bed F is caused to reciprocate upon the truck E, the stone having been placed upon the part F and secured in its proper position with the front edge so placed that it will bring the edge of the design at the proper distance from the grippers to secure the required margin upon the sheet, and then adjusted to the proper height to receive the ink and impression by means of the pieces F and screws f, as before described. As the bed reciprocates, the stone first passes under the dampening-roller N, where it receives the proper degree of moisture, and then under the inking-rollers I, where it receives the ink. The manner in which the ink is supplied to the rollers I has been before fully explained. At the end of the motion of the bed in that direction the stud or stop h strikes the lever or arm i and lifts the dampening-roller N through the cam shaped pieces 0, so that the stone on its return-motion does not come in contact therewith. The inkingrollers, however, continue in contact and roll across the stone on the return-movement. So long as the shaft U is not revolved so as to bring into action the sliding teeth S, the bed continues to reciprocate without giving an impression, passing under both the dampeningroller and the inking-rollers ateach i'orwa d movement and under the inking-rollers only on the return-movement, and thus any desired amount of rolling may be given to the stone. While this is going on the pressman places the edge of a sheet from the pile upon the feed-boards under the grippers T, which are open in this position, and presses it upon the pointer soas to receive the proper register. He then either operates the shaft U, by means of the hand lever u, or adjusts the stud u" so as to cause the reciprocation of the bed to operate, as before described, to project the teeth S and thereby cause the tympanframe to rotate with the bed, carrying with it the sheet, the grippers closing immediately the cylinder starts, the points v insuring that the sheet does not slip before the grippers take. As the cam Q passes from under the scraper Q the latter presses the tympan and sheet upon the stone in the ordinary manner and gives an impression of the design thereon. As the tympan-frame continues to revolve the fingers 00 remove the sheet therefrom, as above described. The lifting-bearers Q being properly adjusted in the slots h, lift the scraper Q immediately after the design has passed, thus relieving the tympan from further friction therefrom and hold it up until the cams Q have come into play. T e tympan having made a complete revolut-i n it is stopped and brought to its position by theplanes h, as above described, and the stop to has operated upon the lever a and thus retired the sliding teeth S, so that the returnmovement of the bed does not engage the wheels R, all of which has been'above fully described. On the next forward movement of the bedthe stone is dampened by the roller N, and receives ink from the rollers l, and-the whole operation is again repeated, the number of times which the bed passes under the rollers to each impression being regulated. according to the quality of the work, by ad usting the stop or stud 11.".

Having now fully described my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. The employment of the flanges n on the interior surface of the dampening-roll N, in connection with alternate holes in the. watertube N, substantially as and for the purpose specified.

2. The combination of the cam-shaped pieces 0, shaft 1*, arm 5 and studs h and h, with the dampening-roll N, substantially as and for the purpose specified.

'3. Controlling the admission of water to the dampeningroller N of the lithographic press by means of atmospheric pressure, substantially as herein described.

4. The combination and arrangement of the rollers 1, shaft 1 balance-weight W, arm i, and studs or stops h h, for the purpose of transferring the ink from the cylinder J to the inking-rollers I, substantially as herein described.

5. The combination of the arm m spring m forked arm m, and duct-roller M, substantially as and for the purpose set forth.

6. The combination of the multiple cam 10, fountain-roller K, arm m and duct-roller M, arranged substantially as described, and for the purpose specified.

7. The employment of the springs 76, between the set-screws k and the fountaintrough K, for the purpose above set forth.

8. The combination and arrangement of the inclines P P, pins q, springs q, and scraperbar Q, for the purpose of adjusting the pressnre upon the scraper, substantially, as herein described.

9. The combination of the wheels R, having one flattened side, with the planes W, for stopping the tympan-frame in the proper position, as herein described. v

10. The employment of the sliding teeth 8,. in combination with the flattened wheels R and rack H, substantially as described, for the purpose of causing the wheels R to engage the said racks after having been stopped.

11. In combinationwith the sliding teeth S, the adjustable slotted pieces S, for operatin g the said teeth, substantially as herein specified.

12. In combination therewith, the disks T, wrist-pin t and stops t for operating and controlling the said pieces S.

13. The combination of the slotted arms or disk u, shaft U, cams V, and sliding springbars 2:, or their respective equivalents, for operating the disks T, substantially as herein set forth.

14. The combination of the shaft U, levers u and u and the studs a and u, attached to the reciprocating bed F, for the purpose of operating the shaft U, and consequently the sliding teeth S, from the reciprocationsof the bed F, substantially as herein described.

' 15. The ratchet-wheel a and pawls uand u, in combination with the shaft U, lever u, and adjustable stop or stud u", for the purpose of regulating the number of movements of the bed to each impression, substantially asset forth.

16. The cam u", for lifting the pawls u" and u out of contact with the teeth of the ratchet wheel a, in combination with the said ratchetwheel, to cause the return-motion of U, substantially as herein described.

17. The cam u, in combination with the pawl u", lever u ratchetwheel u and retail ing-pawl 11. for bringing the said pawls into action, substantially as above set forth.

18. The arrangement of the pulleys m, spring-pieces w, fingers a, and roller Y, for removing the sheet from the tyinpan, substantially as specified.

19. The employment of the registeringpoints a in the revolving tympan-frame R, for the purpose above set forth.

GEORGE H. REYNOLDS.

Witnesses:

W. A. HENDRICKSON, G. H. BABcoom

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