USRE546E - Improvement in - Google Patents

Description

3 Sheets-Sheet 1.

I. ADAMS. POWER PRINTING PRESS.

Reissued Apr. 20, 1858.

3 Sheets-Sheet 2.

I. ADAMS. POWER PRINTING PRESS.

Reissued Apr. 20, 1858.

3 Sheets-Sheet 3.

I. ADAMS. POWER PRINTING PRESS.

8 5 8 1 2 r p A d 0U u S S l Du R 6J0 04 7 0 a N5 UNITED STATES IJMZPK PATENT OEEIcE.

ISAAC ADAMS, OF BOSTON, MASSACHUSETTS.

Specification forming part of Letters Patent dated October 4, 1830; extended seven years; again extended by ac of Congress from August 16, 18.56, to March 2, 1864 Reissue No. 546. dated April 20, 1858.

To all whom, it may concern Be itknown that I, ISAAC ADAMS, of Boston, in the county of Sufl'olk and State of Massachusetts, have invented a new and use ful and Improved Printing-Machine, which 1 term a Power Printing-Press, and I do hereby declare that the same is described and represented in the following specification and the accompanying drawings, making a part of this specification, in which Figure 1 denotes a side elevation of such piintingpress; Fig. 2, a top view of it; Fig. 3, an elevation, in perspective, of a press of this 'description.

The remaining figures are views of details, and will be hereinafter referred to and expla-ined.

The drawings are not all made on thesame scale, but the smallest'are large enough for explanation.

The printing-machine embodying my said invention may be described as made up of four systems orv aggregations of parts, each system being used for the performance of a distinct portion of the process of printing, as performed by thesaid machine-to wit, tirst, the distribution of the ink; second, feeding and registering the sheets to be printed; third, conveying the sheets into the press, or into that part of the machine where the impressions are to be produced; fourth, producing the impressions-each system or aggro gation being so calculated and contrived within itself, and so connected and combined with each and all the others, that while it performs its ottice in a complete and distinct manner, all receive their appropriate motions from the same motive agent. Although some parts are in constant operation, while other parts move and stop, and have their periods of rest and motion alternately, the said systems severally complete the performance proper to each of them in consecutive order.

Fig. 1 is an elevation of the machine as made with the power to move it applied by means of a spur wheel and pinion, A, running horizontally below the flooring on which the machine stands. The pinion-shaft n, Fig. 1, whether vertical or horizontal, may or ought to be provided with a fly-wheel.

Fig. 2 is a top view of the machine, and Fig. 3 is a perspective elevation of iton asmallscale.

In this figure the motive-power is shown as applied to a horizontal shaft, the. main wheel upon the vertical shaft being a bevel'gear (see also Fig. 20) andput onthe shaft just above the crank, and being driven by a pinion (see Fig. 28) upon the horizontal driving-shaft carrying the flywheel B, Fig. 3. Such drivingshaft may be turned by any sufficient steady mechanical power; or it may be moved by manual power by the use ot'a winch or hand crank.

(J G G (3, Fig. 1, and O G C C, Fig. .3, do note the frame-work of the machine. The bed I) b, Figs. 1- and 5, on which the form of type rests, consists of a cast-iron plate, made 'sufliciently stiff and strong by-the use of as little metal as practicable in the form of ribs which run in different directions upon its lower surface, as seen in Fig. 4, which is a. view, on a small scale, of-the-under side of said bed. An

end view of the bed, with the form of type b 1) upon it, is denoted by the dotted lines b b, Fig. 1. The surface upon which the form rests should be nearly a perfect plane, although it should be slightly concave or depressed, to compensate for the yield of the metal, which is inevitable when impressions are being taken. When the press is in operation, the bed is caused to rise in order to produce impressions, and to sink ing-place in order to allow the ink-rollers to pass between it and the platen to impart ink to the types. The bed is position by means not only of the projections b I), Figs. at and 5, arranged at its ends and made to slide in vertical grooves 42 c, Fig. 6, formed in the opposite inner sides ofthe frame, but also by brackets c 0, Figs. 5 and 23, one end of each of which is secured to the under side of the bed, one at each end thereot'l At the lower end of each of these brackets is a box, 0 These boxes are made, respectively, to embrace the impression-bolts c 3, and 29, upon which they slide up and down.' Instead of such boxes,there may be projections at the lower ends of the brackets, which may slide in vertical grooves. he Weight of the bed is counterbalanced by means of weights (1 d, placed upon the levers d 01, Figs. 5 and 24, which are secured to the rocker-shaft d (1*, and'are connected with the bed by means of the rods d d The said down again to its rest kept in ahorizontal.

lugs. 1, 2,

rocker-shaft and levers being rigid, their connection with the ,bed serves to keep the bed level in one direction. The bed is raised and made to produce impressions by means of levers e c,Figs'.l and 7 ,called toggle-joints, which levers may be operated by acam; but for the operatiou'of which I prefer to usea crank, I), and pitman or shackle-bar D, Figs. 1 and 9.

Fig. 7 is a detached view-of the toggle-joints; Fig. 20, the sameof the impression-crank,and Fig. 9 the same of the said pitman. These toggle joints are hinged together, as seen in Fig. 7. They are also hinged to the bed and to the seat on whichthey rest by means of steel pins we and lugs e 0 the said seat on which said toggles rest being on a crossbir or winter, E, Figs. 8. 25, and 34, of snlficfetit strength to sustain the impression. The winter is placed under the machine and con-. nteted at its two ends,ff, with the platen by n cans of two veztical bolts, 0 c, Figs. 1, 3, and 29.

Fig. 25 is an elevation of the bottom bar or winter, such as used in the press delineated by Fig. 1 but in order to avoid inconvenientheight in the machine, the winter may be constructed as shown in the perspective view in Figs. 8 and iii-that is, with a ledge'or shoulder-,1", disposed near its low er edge, on which the lower end of the toggles may rest.

Letter F, Figs. 1, 2, and 16, denotes the platen, which is formed somewhat in the same .manner as the bed-that is, with ribs or flanges, to give it strength and stifi'ness. it should be constructed a little narrower and shorter than the bed, and should be provided with means at each corncrns, for instance, either projections f'f, as shown in Figs. 1 and 2, or rollers, such as shown in Fig. 35, for its support on the railways f f 3 f. The platen has also two strong projections, f f, with slots or recesses gvg formed in their sides. The impression-bolts c a, which connect the platen with thewinter and sustain the vertical strain of the impression, pass. through these recesses, which should be so formed as to al'ow the platen to .be moved horizontally from over the bed, in order that the form of typemay be conveniently put on, adjusted or taken off, as circumstances may require.

The impression-bolts c a are providedwitl strong nuts g g, which go on the ends of said bolts with screws, by means of which the win ter and platen may be adjusted at a greater or less distance from each other, in order to suit the impression to the work. Upon each of these nuts there is a hoop, g, the nut being prevented from turning within the hoop by a. set-screw, g From the lower edge of each of said hoops there is a projecting lip, g, having a hole through. it corresponding with holes in the platen, such holes beingfor the purpose of receiving pins 9 for maintaining the nutsas well as the platen'in. their respective places during the operation of the machine. They are also to insure the return of each nut to its true position after having been loosened for the temporary removal of the platen. When the impression is to be altered, the set-screws g g must be loosened or unscrewed, and the nuts g 9 turned as much as may be required,

on the completion of which the said setscrews are again to be tightened without removing said pins {1 but when the platenis to be moved laterally from over the "bed the said pins must be takeuout, while the set screws remain tight. The nuts can then be turned back, so as to relieve the platen from anypressure and allow it to lie-moved away 'from over the type or form, \\hen the platen is again brought to its place, the pin-holes in said hoops and the corresponding holes in the.v

platen will serve as guides by which the nuts maybe brought to the same positions they were in before being altered. By this contrivance of the nuts 9' g, the hoops g, and the set-screws g, for increasing or diminishing the distance between the platen F and the winter E, 1 am enabled, with great ease and expedition, to insure the most accurate and delicate, and at the same time the most permanent, adjustment of the impression to be given to the printed sln ets--a result of great value and importance in good printing. The toggle-joints are applied betweeu'thc centers of the bed and winter. The crank I l), by which the pinnan and toggles are operated, is arranged with its shat'tin a'vertical position. and so as to run in boxes h h, Figs. 1 and 6, secured to the cross-bars at the end of the. machine. The pitman I), by means of which motion is transmitted from the crank to the toggle-joints, is attached to the crank D by a strap or shackle, h, Figs. 1, 9,.and 20, through the ends of which and the rounded end k Fig. 9, of the pitman, a pin is passed, the said end being made to rest in a concave scat, h formed in th side of a box', G, Fig. 9, which is placed between the wrist or neck 6-, Fig. 33, of the crank and the end h of the pitman. The whole together forms a. double joint, by which not only is the box G allowed to turn freely on the crank, but the end It ofthe pitman to work freely in-= the concave seat h, whereby the other end of the pitman is enabled to rise and fall with the center joint of the toggles against which it operates.

The bed I) b is raised, the impression produced, and the said bed lowered down again, by little less than one-half of a revolution of the crank D, and on this, account the said crank is made sulficiently eccentric to move the pit-man a little more. than twice as far toward the togglejoints as it is necessary to move said joints; 'anda device is adopted by which the pitman is made to act on the togglejoints only duringalittlelcssthan oue-half of its movement toward themwhilethey are raising the bed up and producing the impressiou,and in only an equal proportion in its movement in the other direction in order to lower the bed down to its place of rest. The said levice may be described as follows, to wit:

toggle, e, .an instrument, 1'

A portion, 1', of the pitman D rower than the rest of it, so

shoulder, 1?, on its under proper point in its motion toward the toggles, is pressed against the end of a lever, hereinafter called a declension-lever, and by means thereof forces the toggles up to their efl'ective position. The narrower end, i, ofsaid pit-man moves through an opening, i, Fig. 7, in the'upper toggle, and slides on the the center joint of the toggles during that is made naras to leave a edge, which, at the ,part of it inovement'in which they are not in motion. he toggle-joints are the least powerful in their action for raising the bed when the pitinan first begins to eperate upon them, and the pitmanat the same time will be moving at its greatest velocity toward the toggles. In its backward or retiring movement, when lowering down the toggles and bed, said pit- .man will be moving 3., its greatest velocity at the moment when said toggles and bed arrive at'their places of rest. Consequently a. contrivance is necessary to prevent the injurious shocks and noise which would be produced by the suddenstarting and stopping of the bed and otherparts were the shoulders of the pitman allowed to impinge against the z-toggle pin i without the intervention of any such device or contrivance as above referred .to and hereinafter explained to modify such very objectionable effects. For these reasons -I employ and arrange on the side of the lower i Figs. 1 and 7, which I calla declension-lever, against the upper-end of which the shoulder 0" of the pitman is made to operate in inipeiling forward the togglejoints. The name of this lever is indicative of its nature, for, aittough almost infinitely powerful when it begins. to act, it gradually decreases in power until its leverage terminates, and in lowering the toggles down the action of said lever is reversed.

Fig. 7, which is a perspective view or projection of the toggle-joints, shows the declension-lever i 12 asattached to the lower of them by means ofthe two flanges k it, between which it is kept by the pin k, which goes through the lowerend of the lever and through the slots k k, made in said flanges. Each of these slotsstands in an oblique position toward the 'side'of the toggles, in order that when the lower end of the declension-lcver is thrown outward the slot-s, by means of said pin, may cause said lever to slip downward on said toggle about one-half of an inch in the course of its entire action. The lower end of the declensionlever is thicker than any other part of it, and is rounded, so that when it is pressed between itsresting place or fulcrum 1. Fig. 26, and the side of the toggle the points of hearing which said toggle and fulcrum or resting-place have against the lever shall be exactly or nearly opposite each other. This lever is curved in its whole length, so that when its upper end is pressed forward the curved side of the lever rolls, as it were, up the side of the toggle, bringing in that way pin i in its bea ring against the toggle gradually nearer and nearer to the upper end of the saidlever, until the bearing against the toggle comes to be nearly opposite to the bearing of the shoulder of the pitman. \Vhen the shoulderof the pitman is pressed against the upper end of the declcnsion-lever, the lever will be carried forward by the pitman, so that the toggles by such means will be forced gradually up toward a vertical position, the point of resistance gradually receding from opposite the fulcrum and approaching the upper end of the lever, as aforesaid, until its lower end-leaves its hearing or fulcrum. When this takes place, the said lever will be carried along with the toggles until the impression is produced. When the togglejoints return to their place of rest, the declension'lever acts with a progressive power-to bring the bed gradually to a state of rest.

Sometimes, when the machine is in operation,.it is desirable to prevent an impression beinggivenas, for instance, when there is no sheet on the frisket; also when a sheet has been inaccurately placed or pointed. To do this a bar, H, Figs. 1 2-, and 27, is put/across the machine under the pitman D, and there is a treadle, k, Figs. 1 and 2, on each side of the machine, one treadle being attached to each end of said bar, an( l-s':'ihltreadle being hung on a pivot, as at k Fig.1, in a convenient position to enable the person feeding the sheets, at either end of the machine. by pressinghis or her foot on thetreadle, to raise the pitman-I) sutiiciently high to allow its shonl: der 1' to pass over, when the pitman is impelled forward clear of the declension-leverwithout moving either the latter or the toggle-joints.

The distribution of the ink is performed by means of the rolling together of the surfaces of cylinders or rollers,'a set of which I place at each side of the bed, as denoted by the dot-- ted lines 10' k Mk k k in Figs. land 5, each. set being Figs. 1 and 5, though one fountain will answer, as shown in Fig. 5.

In anarrangement such as represented in Fig. 1 the cylinders k k k k are composed of metal or wood; but the rollers k k are furnished with elastic surfaces. of wood or metal may be 11 ed, as k k Fig. 5-oneon each side of the bedinstead of the four cylinders le k is W, as seen in Fig. 1.

The ink-fountain consists of a trough with a fountain-roller, k", lying in the trough, with the upper side of the roller a little above the level of the sides of the'trongh. In order to control and graduate the quantity ofink drawn from the fountain by the fountain-roller, a scraper, I, Figs. 5 and 10, with a thin edge titted to the fountain-roller is screwed 'onto the fountain with the thin edge against the fountainroller. The holes which the screws are put through to hold the scraper to the side of the fountain may be made oblong crosswise 'of the fountain, so that the scraper may be ad justed to the right distance from the fountainfurnished with an ink-fountain, I,

Two cylinders ings made in the carriage m. Letter n is a spiral spring which forces the roller L against the cylinder If.

a is a weighted lever, by means of which the position of the traveling roller is changed, as follows: Supposing the cylinder 0' to be in motion, its upper surface moving toward the traveling roller, and the said traveling roller being in contaet with it, as seen in Fig. 5, the said traveling roller will then advance toward the right-hand end of the cylinder If until the lever n shall be brought in contact with the stop a", which projects from the side of the frame, there being one such stop at each end of the cylinder Ir", when, by the continued advancement of-the traveling roller toward the said stop, the said weighted lever n will be elevated and pressed over until its center of gravity shall be thrown over to the opposite side ot'the spindle m". This having taken place, the said weight will cause the said lever to fall, and, in its descent being brought against the stud u", said lever will turn the spindle m", by which means the oblique posi tion of the traveling roller against the cylindcr P will be so changed as to cause it to move toward the other end of the said cylinder, where, when i t arrives, the said weighted lever will meet with another stop-such asn which in its turn will reverse the oblique position of the traveling roller, in manner aforesaid,.to the position shown in the drawings. Either or both of these modes of lateral dis tribution may be used; and with either or both of these devices. in combination with the adjustable scraper l and the fountain-roller h 1 am enabled to produce and constantly maintain during an unlimited period of time and throughoutthe largest editions of the most voluminous works, a very perfect equalization and distribution of ink over the entire Surface of the-inking rollers It it and thus secure remarkable uniformity and perfection in the color and character of the printing done on my machine.

For the purpose of taking the ink from the distribution-c linders If Ic and laying it upon the surface of the types, there are two other rollers, 1: 1;, Figs. 1 and 14, whose surfaces are composed of an elastic substance--such as before named and which, after having been rolled upon the cylinders If If to receive ink from them, are rolled over the form of type and passed between the bed and platen, from the distributioncylinders on one side of the bed to those on the other side thereof, where they again receive a contribution of ink. These rollers are supported by their journals in boxes n n Fig. 2, secured to the side rails of thei'rame n" n, Figs. 2 and 14. which frame I call a basket-carriage. Fig. 14is a detached perspective view of a carriage of this kind with friskets a a and the inking-rollers I. It" mounted upon it. In my drawings I have shown only two inking-rollers mounted on the frisketcarriage; but 1 do not limit myself to this number, as the carriage may be made to carry four, six, or any desired number of ink ing-rollers. The inking-roller boxes a a Fig. 2, should be made adjustable vertically, so that they may be set at a proper height to give theinking-rollcrs a suitablepressure upon the form while they are being rolled over it. It is well, also, that the inking-rollers should be held down by springs, in order that in case of either of the rollers being untrue or eccentric, or in case of being set too tow, it shall be capable of rising and falling, while at the. same time it can maintain a proper degree of pressure upon the types. This object maybe attained by loading the rollers with a solid metallic shaft, instead of rising springs, there being room made in the boxes of their journals to allow the journals of the inking rollers to rise and fall.

The distribution-rollers, as in Fig. 1, may be rotated by means of the bevel-gears n a", which are propelled by means of the pulleys and bands u e", which receive motion from a. pulley, a fixed on the pinion shaft a, or, in case the pinion-shaft r. shall be placed in a horizontal position, as in Fig. 3, (see also Fig. 28,) in order that it may be conveniently turned by hand as well as by other power, one cylinder being used on each side of the bed, as in Fig. 5, instead of two, as in Fig. 1, the said bevelgears may be dispensed with, and the said cylinders k may be rotated by means of a band running from a pulley, a Fig. 28, on the said pinion-shaft to a pulley on the end of the shaft of the nearest cylinder lr', Fig. 5, the other cylinder 7: being rotated by means of a pulley on its shaft and by a band running from a second pulley on the shaft of the said nearest cylinder. The ii'isketearriage slidesinrabbets j' f j j in the upper part of the main frame, as seen in Fig. 2; or, instead of said rabbets, ways for the said curriage may be formed in iron rai which may be securedon the frame, as in 1 o. TilGIOllBIS k It, being n'iount-ed in the frisketcarriage a are moved by it over the form, from the distribution rollers on one side oi the bed to those on the other side, and the. said frisket-carriage is operated and caused to have its proper periods of motion and rest by the following means, viz: A crank, it a, Figs. 1 and 2, (see also Fig. 15,) and a conin cting-rod, n, are used to produce. the motion, said conmeeting-rod n being attached to the end of the frisket carriage. Letters V, Figs. 14 and 15, show the points of connection between the said connecting-rod and said frisket-carriage. The crank n is secured to the top end ota short shaft, 0, Figs. 15 and 31, whose pivot has a step or hearing in the top end of the crankshaft 0, Figs. 20 and 53. The upper end of the shaft turns in boxes (F, secured to the cross-ties of the frame. The crank it is made to move successively to the extent of half a revolution at a time, the same being for the purpose of giving the frisket-carriage, inkingrollers, and frisltets their motions in either direction, and is allowed times of rest liLiWUJll rocking bar at a the periods of motion equal to the times of nzotion. These times of rest are for the purpose of allowing the inking-rollers k k to receive a fresh charge and distribution of ink, and to afford time for the bed to rise, in order to produce the impressions and fall again to its resting place. To produce these periods of'motion and rest, a rocking bar, 0, Figs. 1, 15, and 31, is secured to the shaft 0 by means ofa pin, which is put through the shaft and the center of the rocking bar; or said bar may be put through a mortise in said shaft, or said shaft may be put through a mortise in said bar, in such manner as to allow said bar to swivel on the pin, so that its ends may move a short distance up and down. To rotate this bar, and by that means the shaft 0 and crank it, there is an arm, 0, Figs. 1, 20, and 32, secured to the upper end of the crank-shaft o,

by which it is caused to rotate horizontally.

At the end of the said,arm 0 there is an up ward projection, which comes in contact with the outer end of the rocking bar and carries it around one half of a revolution, when, by

means of a stationary cam or inclined plane, the said end of said rocking bar will be relieved from the action of said arm by being raised up so as to allow the projection on the end of the arm 0" to pass on underthe said end of the rocking bar, and allow it, with the shaft 0 and the crank it, to stop until the arm 0 shall have per for med the other half of its revolution. This done, the said projection on the arm will strike the other end of the rocking bar, and carry it, with the crank n, around another half ofa revolution. The said stationary cam will then again disengage the roclc' ing bar from the arm'o, and the said crank and the parts attached will have another period of rest, and so' on, alternately. The stationary can or inclined plane. may be barely long enough to serve the purpose of disengaging the ends of therocking bar from the arm which moves it, and it may be secured to a cross-piece of the frame of the machine, and in a situation to act against the under side of the end of the rocking bar successively, in order to disengage it, as aforesaid; or the said inclined plane may be formed on the edge of -a hoop, 0 Fig. 6,-"or ring'within which the arm 0 may revolve.

To make sure-of the stoppage of the crank it the moment the bar 0'" is relieved from the action of the arm 0, it is well to apply some obstruction to the said bar 0 which shall actat'the moment of disengagement. This can be done by so constructing and arrangin g the parts-the-rocking'; bar'andthe shaft othat the ends of said bar can only-rise up to a certain pointqand then making-the upper.- part, of said. inclined planeso high that neither end of the said rocking bar can pass the most prominent part-of the inclincdplane without some friction 3 or the same object may be efl'ccted by placing a spring over the outer end of the 'point opposite to that where the other end is disengaged, in such seen in Fig. 14.

manner as, at the moment of disengagement, to cause the bar to fall into a slight notch made on the edge otsaid ring 0 In this case, by means ofa cam or inclined plane on the arm 0, the bar may be disengaged from the notch the instant before it is to be impelled forward by the said arm.

In order to carry the paper into the press, to sustain it while the bed is being raised for the purpose of producing the impressiom to separate the paper from the type after the impression has been given, and to bring the pa.- per out of the press,there are frames n n a n Figs. 2 and 14, suspended on the frislictcarriage n by pivots or journals at the corners 0 o" '0" 0 of said frames, the inner corners, 0, being supported on projections from the side rails of the friskctcarriage, as seen in Fig. 2; or they may be supported as ots o 0 rest should be so made as to allow the frisltetsto rise and fall a little when the impressions are. produced, and the pivots may be prevented from being thrown out of their boxes by slides, catches, or other suitable means. The friskets generally consist of an outcrquadrangular frame of fiat iron furnished with cross-bars 0 o o o" 0 (1,Fig. 2, which come between the pages or divisions of the type or forms and under the margins and' blank spaces of the printed sheets, which they serve to support and separate from the types immediately alter the production or" an in pression. The cross-bars are often formed. of strong paper pasted to the quadrangular frisket-frames; but they may bet'ormed otthin iron, twine, webbing, or'in any otherway which may serve the purposes aforesaid, deflection or bagging being avoided. When the crossbars 0" o are made of a material which will allow of it, they should 'be' curved upward a little, in order to bring the sheets of paper to be printed firmly against the platen before the types are brought in contact with them. This prevents the slurring which would be produced by allowing the paper to dangle over the type either immediately before or after the impression. When the said cross'bz'a-rso o are'made of paper, it is customary for printers to put rolls of paper or pieces of. cork on the said cross-bars, in order to compensate for the yieldingcharacter'of the paper, and to cause the sheets to be pressed firmly a gaiust the platen a short time before and after the impressions.

The better to effect the above-named object 7 of holding the sheets firmly against the platen from a little time before the types are brought up against them until after they are impressed and separated from the types, I apply springs o 0, Figs. 14 and 17, to the under sidesot' the t'riskets. These springs may be madeot plates of steel bent in a curved form, as denoted in Fig. 17,,and'in that case may be screwed orriveted to the under side of the frisketsone spring on each of the two opposite sides-they being made ofsuch length and The boxes in which the pi\'-- placed in such a position that their ends, soon after the bed commences to rise upward, shall take bearings upon the bed or upon the chase orotherpartprovided forthepurpose. Kysuch means the t'riskets are made to press the sheets against the platen before they are touched by the types, and are made to hold them there firmly until the types are separated from them. instead ot'the above modeot' using said springs for pressing the friskets against the platen, springs of any sort having the required elas ticity and strength may be secured to the bed below the surface of the form, as shown, for instance, at 0 0 0" 0 Fig. 18, in which 1/ b denote the edge of the bed toward the crank 11", there being provided small studs 0 '0", projecting downward from the fiiskets sutiicicntly to take bearings upon other studs which stand upon the said springs and soon enough to secure the operation aforesaid. The foregoing are the requisites proper to the instruments used to support the paper to be printed and to separate the sheets from the types after such sheets have received impressions; but any other construction of the mechanism which in difi'erent circumstances may be found convenient and which may possess the said requisites may be employed. The cross-bars or point-rods p p are made of thin iron or steel, and they are secured to the friskets by means of screws 11 1), the said screws being screwed into the iriskettrames and made to pass through slots formed crosswise of the rods, so as to allow of their adjustment in that direction. Two points, p p, by means of which the printing is to be made to register, are secured to each of these rods. The said points, in order to prevent their being pressed too hard against the face of the platen, may be fixed to the end of short flat springs, and such springs may be Iastened to the under sides of the point-rods in such manner that the points maybe caused to project through holes in the rod 10p sufliciently to serve the purpose of registering the sheets. The flat springs should be sufliciently elastic to allow the points to be pressed down even with the snrlace ot' the rod without being injured.

In registering it is sometimes necessary that the points should be arranged so as to range with each other across the triskets, in a direction at rightangles with the direction in which they are shown to range in Fig.2. The sheets to be printed may be pointed directly upon the friskets; but in that case a loss of time will occur on accountof the friskets being about one-half of the time between the bed and platen, during which time the person who feeds the sheets can do nothing toward pointing the sheets on the t'riskets. To remedy this loss of time I make two feed or register frames, M M, Figs. 1 and 2-0110 for each end of the machineand hinge them to the framework in such positions that when either friskct is out and at rest in the propcr'situation to receive a sheet the adjacentfeed-i'ramc may be turned down upon it and made to deposit verse sections the form of a dovetail.

there in the proper place the sheet previously printed or registered upon the said l'eedi'rauu'. Said feed-frames should be formed of some kind of open-worlt-s;ueh, for instance, as at M Ill,

Fig. 2; or frames such as shown at. l ig. 30 may i be used and covered with a. coarse netuvorlr. This mode of forming the feed frames is to prevent them, when lifted immediately at'ter depositing sheets on the friskets, from lilting or distu rbing said sheets or causing them to move from their places by suctionor a movementot' the surrounding air. A part ot'each of the said feed-frames consists of cross-bars 1r1fip-p" 1) p 1J6 p. Poi nts p p p p to register the sheets of paper, are secured to these ba rs in -such manner as to permit their being adjusted in the same direction as the points upon the friskets. The two points to be used on either feed-frame at any given time should be those which will range with each other in the same direction as those used on the friskets. They may be secured to small slides having in their trans- "he said slides may be inserted in grooves made to tit them crosswise in the cross-bars p p. The slides are secured from slipping, and at the same time made adjustable, by means of set-screws 1)", which are put through plates of metal on the back sides of said cross-bars, and in such positions that their points may be made to bear against said slides. To prevent moving these points upon the pointrods of the friskets, holes 11 p p are made in the said point-rods, into which the points on the feedt'rames enter whenever either feed-frame is turned down upon the frisket in order to deposit a sheet of paper thereon.

The feedframes are advantageously operated by the person who points the sheets, he or she for that purpose taking hold of the said feed-frame with the right hand at ornear p. These feed frames, however, may be operated by the mechanism of t he machine, which may be described as follows: A toothed wheel, 1)" r, Figs. 1 and 2, is put upon a short shaft, 1), by which each of the said feed frames is hinged at one corner to the frame of the machine. Thcse wheels 1) r are operated by by means of levers r, on the lower end of each of which there is a section of a toothed wheel, which is actuated by the racks r r, Fig. 19, which are attached to slides 7'' r one on each side of the machine. On the other ends of said levers there are other sections of toothed wheels, 1', one of which gears directly into and actuates the wheel 1"; but the section 1" actnates theintermediate wheel, 1", and this intermediate gear actuates the wheel p". The reason for using an intermediatewheel with one of the feed frames and not with the other is, that the teed'lrauies, in delivering sheets,m0ve in opposite directions,eaeh toward the other, while both the racks r 1", by means of which the said teed-frames are moved when turning said feedirames down, act in one direction. The slides r r are connected together by cross-bars, and are caused to n'rove'iu one direction by means 'of a frictionroller, which is attached to the crank D, the said roller, when carried around by the rotation of the said crank, being made to act a gar-inst a cam formed on the ed ge of one of the cross-bars which connect the said slides. This cam and friction-roller may be transposedthat .is to say,.the cam may be put on the crank-shaft and the frictiouroller maybe attached to the said cross-bar. The slides r r are moved in the other direction by means of the weight 1'', Fig. 1, and crooked lever r. Drevfllt th of the. said feed-frames from being turned down at the same time, the toothed wheels -12 r are so put on the shafts 19 1: as to turn freely upon them. .A small steel rod, r" w r r", Fig. 2, is placed along the lower edge of each of the said teed-frames. One end of" each of these rods passes through a small flange or collar, s s, on each of the said shafts, and when either of the said feed.- frames is to be operated the end of the rod which belongs to that feed-frame is made'to enter a hole in the hub or nave of the wheel on the shaft of said teed-frame, so that when the said wheel shalt be turned, it being thus clutched to the shaft of said feed-frame,it will carry the feed-frame down for the delivery cf 2. sheet. The other ends, s s, of the said'rods are'bent down so as to connect with the levers a is at points'in lines running through the centers of the pivots by which the feed-frames are hinged to the machine. The fulera of these levers a s are about midway of their length, and they are attached to springs s s, which serve, by means of said levers, to draw theends of the rods r r from the holes in the hubs of the wheels p 1", so as to allow the said wheels to turn without moving the feed frames duringsu'ch portions of time .as they are required to remain stationary to afford time for the sheets to be pointed upon them. Whenthe frisket-carriage is moved to either end of the machineas,-for instance, to that end where the toothed wheel 1)" situateda friction-roller, one of which is secured in each side of said carriage, is made to act against the spring 3 and press it back so as to cause the lever s, to the end of which said spring is attached, by means of the 'rod 1, to clutch thesaid wheel p" to the shaft 12 oft-he feed-frame, and by such means secure themovement of the said feed-frame at the time the frisket is near to it and in position to receive the paper to be printed, the motion of the racks 'r being so timed as to cause the wheels I) r to move. for the purpose of moving the said feed-frarnes at the proper time. Each of the springs a a should be ofconsidcrable length, and the points where the friction -rollers bear against' them when the friskets receive sheets from the feedframes, should be so far from the ends connected with the levers s s as to allow of sutlicientelasticity to permit-theends of the said levers to be pressed inward so as to unclutch the wheels.

W1 from the shafts 11" 1, thus furnishing the means of preventing the feed-frames from moving, whenever the same shall be desirable. Instead of the said friction-rollers,projections may be formed on the sides of the frisket-carriage to act against the said springs.

In order to secure the return of the bed to its place of rest regularly after impressions shall have been produced the pitman, which opera tcs the toggle-joints should be so made as not to torce them so near to a vertical line but that the elastic force of the parts upon which the stress of the impression comes will be sufficient, by their reaction, combined withthe weight of the bed, to force the said bed to descend and the. toggle-joints to follow the pitman in its backward movement until they cometo their place of rest. In order to secure greater certainty to this operation, a cam, s, i

Fig. 20, of the proper form may be put on the lower part of the impression-crank D, and be made to draw the toggles back to their place of rest; by actuating a crooked lever-such as shown in Fig. 2 lcon-nected to the said toggles by means of a rod, 8 and an eyebolt, s", Fig. 21.

The bla-nketing usually employed to cover the face of the platen and toinsure the degree of softness or elasticity which is necessary to. the production of even impressions on the paper may be secured in a frame covered on one side with'parchmeiit or fine cloth, somewhat in the manner of the tympan of a hand printing-press, the said. frame being so made as to surround the edge of the piston and be secured thereto by means of slide-bolts or some otherconvenientiastening. The blanketsmay be placed between the covering of the said frame and the face of the platen; or the blankets o 0 may be arranged as shown in Fig. 3, (see also Figs. 16 and 152,) there being in this case two blankets-+oue at each side of the platen-and the edge of one being secured to the frisketcarriage by means of a rod, 8'', arranged between the edge of one frisket and the inking-rollers k jcflaod the other being secured to said carria e in the same manner between the other frishet and the' said inkin grollers. to the edge secured to the frisket-carriage may be secured to-a rod, 8" s, by which each. blanket may be drawn up vertically, asthe frisket to which it belongs is brought out from between the bed and platen, by means of cords 8" 8 98 8 having weights is, thesaid cords running over the rollers 8 18 which are hung in theframe work s s' ,mo unted on theplaten, as shown in Fig. 16. There may be a small roller at each edge of the platen, h ung on springs, to prevent the blankets from rubbing against the edges of the platen. ,The rods s s" are secured to the friske-t-carriage in such manner as to allow of their being conveniently removed or-rcplaccd.

Slide-bolts or spring-catches may ,be used l'or this purpose. When the second sides" of the.

sheets are being printed, it is necessary to provide the blankets with set-otP'sheets.

The edge of each blanketoppo'site -bolts which sustain the may be turned down upon the said deliver the said shect,and then lifted from itwhile the friskct remains stationary. This These may be easily and frequently changed, in order to prevent smutting the work or in case the tympan-frame should be used, the set-off sheets may be secured in place by paste applied about their edges.

The operation of the machine is as follows: The fountain being supplied with ink, and all parts being ready for use, the platen is first to be moved from over the bed, and the form properly placed and secured upon said bed. Next, the platen is to be'returned to its place. The impression are next to be adjusted so as to produce the right degrce of impression, after which the machine may be run a few minutes without giving impressions, in order to have the surfaces of the inking-rollers suitably covered with ink. Now, suppose the machine to be at the point in its operation shown in Figs. land 2, the frisket n? having just arrived at its place of rest for receiving a sheet to be printed. In case the feed-frames are to be used, a sh 'etwill have been pointed upon one of them while the frisket to which it belongs was coming to its place of rest, so that the said teed trame friskct to may be .done by the right hand of the person who points the sheets while he or she with the left hand removes the sheet from said frisket which may have been previously printed; or, the said feed-frames may be turned down upon the friskets bythe mechanism of the machine, as; hereinbefore stated. Whenthe movement comes for the frisket which has now received a sheet to start on its way into the-press, inv

order that the said sheet may receive an impression, the arm 0 will come in: con-tact with the outer end, of 0 of the rocking bar, and will carry it around with shaft 0- and the crank n until one half of a revolution has lie en performed, giving the frisket-carriage its entire motion in one direction, and carrying the inking-rollers k 16 over the type, so as to ink the form and bring the said rollers to their places for receivinga new charge and distribution of ink from andupon the distribution-cylinders k In". At the same time and by the same operation. thefrisket which has just received a sheet will be carried to the point in the presswliere the impression is to be produced, and the other frisket will be carried to the other end of the machine, where it is to rest and receive a sheet in manner just described. The moment the friskets arrive at their places of rest, the

rocking bar '0 is disengaged from the arm 0, and while the said arm is performing the half of a revotion, in which the said frisket carriage is not moved by it, the bed, by the. action of the crank D and pitman D, will be raised and an impression produced, and the bed will beagain lowered down to its place of rest. During this operation another sheet will have been pointed and. laid upon the frisket be pinned to the blankets, so as to exposed for the purpose, in manner aforesaid; and just before the completion of the said operation the said rocking bar 0 will be again acted on by the arm 0, and the frisket-carriage by that means will be moved as aforcsaid, only in the opposite direction, and all the operations will be repeated consecutively, the machine thus receiving alternately the sheets to be printed and delivering them printed in the same order as they are received.

By the devices herein described, of connectin g a reciprocating frisketcarriage (said frisket-carriage carrying a frisket at each end of it, and the inking-rollers k h on its central part,) with the feed-frames attached to each end of the machine and acting in conjunction with the said frisket-carriage, I am enabled to produce a very large amount of printed work at a small comparative amount of cost for ma chinery, for by thus feeding sheets and delivering them printed on both sides of one platen I make an approach to the facilities afforded by the employment of two separate and dis tinct beds and platens arranged so as to be fed with and to deliver sheets from only on one side.

Whatl claim, ters Patent, is-

l. The method herein described, or any other substantially the same, for giving the bed its proper periods of motion and rest, and producing impressions by means of the combination consisting of the crank I), the pitman D, the decle1ision-leveri i, and the toggle-joints e 0.

2. The within-described method, or any equivalent mechanism, for giving the proper periodsof motion and rest to the frisket-carand desire toisec'ure by Letriage, and each and all the parts attached to it, by means-of the combination consisting of the arm 0, the rocking bar 0 the inclined plane by which saidbar is disengaged, the shaft 0, and the crank n 3.

3. The combination of one or more feedframes with the frisket or friskets, 0r mechanism for receiving the sheets to be printed, the

same being substantially as herein set forth.

4. The within-described mode, or any other essentially the same, of securing against the platen the sheet'to be printed, whereby it is not only kept steady and prevented from bagging, but is also, after the production of an impression upon it, separated from the types ina proper and safe manner.

5. Constructing the pitman as herein described, or in any man'ncr substantially the same, the bearing-surface i, the shoulder i and the joint h constituting its essential characteristics, so as to allow said pitman to be operated and to produce effects in the manner substantially as herein specified.

6. In combination with the within-described mechanism for producing the impressions, the treadle k, or its 'eq livalent, to prevent impressions being takenor produced while other parts of the press are in motion, whenever such prevention may be desirable.

7. The combination of the'double-frisket carriage,-the bed, platen, and the rollers for inking the type, with two sets of inking mechanism, the whole being made to operate together substantially as herein explained, and the several parts being constructed and connected substantially as herein set forth.

8. The combination consisting of the platen, (when constructed substantially as herein stated,) the bed, and distribution-cylinders.

9. The combination of a crank with the carriage n for the purpose of carrying the inking-rollers over the form, and for giving the friskets n their proper motions and periods of rest.

10. The'mode of constructing the winter E or bottom bar, as shown in Figs. 8 and 254, or any equivalent device, by which inconvenient height in the machine is avoided, said winter being made with a ledge or shoulder near its lower part, upon which the toggle joints are sustained, substantially as herein described.

11 The combination of thefountain with one or more distribution-cylinders and a traveler, L, the same being for the supply and distribution of the ink, substantially as herein de scribed.

12. Placing the apparatus for the supply and distribution of ink so that the-distributioncylinders rest over ornearly over the fountnient,

am, the roller which takes the ink from the tone taiirroller bein g placed between the foun tam and the cylinders If If, in the manner substantially as herein shown.

13. The mode herein described of laying; the ink upon the types by passing the rollers If It between. the bed and platen, said-rollers being brought to a stand in their horizontal move for the purpose of receiving their supply of ink from a. cylinder cylinders, substantially as herein stated.

H. The- \\-'ithin-described mode by which the nuts 9 g, which sustain the impression, are brought to their proper positions and secured there-that is, by the hoops g setscrews g and pins g substantially as specified.

15. The mode of producing the impressions by means of toggle-joints applied to the under or reverseside'of the bed, substantially as herein described.

1.6.,The combination of the rocker-shaft d", and the levers dflwith the bed, the same being for the purpose of keeping the bed level, substantially as herein described.

,l'SAAO ADAMS. Witnesses:

JOSIAH HINCKLEY, Jr. J. AVERY RICHARDS.

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