US251888A - Printing peess - Google Patents

Description

(No Model.)

v 2 Sheets-Sheet 1. J. HUMPHRYt PRINTING PRESS.

an. s; 1882.

QRT

Patented xg k y.

(No Model.) 2 Sheets-Sheet 2.

J. HUMPHRY.

PRINTING PRESS.

Patented Jan. 3.1882.

nphef. wasningw". n. c.

l .UNITED STATES PATENT OFFICE.

JAMES HUMPHRY, OF BROQKLYN, N. Y.

pmNTme-paess.

SPECIFICATION forming part of Letters Patent No. 251,888, dated January 3, 1862.

Application 'inea september 23, 1881. (No model.) t

To all whom it Amay concern:

Be it known that I, JAMEs HUMPHRY, of

the city of Brooklyn, in the county of Kings,

`and State of New York, have invented certain new and useful Improvements in Printing- Bresses, of which the following is a specifica non. t My invention is particularly adapted to presses for job-work; and it relates to that class of presses in which a square or polygonal platen having an intermittent rotary motionis employed to receive the sheet, in connection with a reciprocating type-bed movable toward and from the platen. The invention consists in novel features of construction and combinationsof parts, hereinafter particularly described and claimed, whereby a more compact and desirable press havin ga very ecient inkin g apparatus is produced.

In the accompanying drawings, Figure 1 represents a side elevation of my improved press. Fig. 2 represents a transverse vertical section of the upper part of the press upon the dotted line a: w,Fig. 1, certain parts which should be in full view being shown in section for the sake of clearness. Fig. 3 represents a top view of a portion of the ink-bed, the distributing-rollers, and their bearings. Fig. 4 represents a vertical longitudinal section of thepress upon a plane just inside ofjone of the side frames. Fig. `5 represents an end view of the platen detached from other parts; and Fig. 6 represents a side view of the detached platen.

Similar letters of reference designate corre-` spending parts in all the figures.

A designates the side frames of the press, and A stretchers or'cross-bars, whereby the said frames A are connected or tied together to form a rigid frame-work.

B designates the press-platen, which has at the ends journals a, which are fitted to rotate` in pillow-block bearin gs erected on the side frames, A, and shownin dotted outline in Fig. 1.

`The platen B is represented as composed of a castingcored out to make it as light as is consistent with the requisite strength, and, as here represented, is made with four separate faces, which forni an exact square, and which serve successively as a surface upon which to place the paper to be printed upon.1 y

Q designates the driving-shaft, to which motion may be imparted by a belt, it being provided with a driving-pulley, C. (Shown in dotted outline in Fig. 1.) l

D designates a second shaft, arranged parallel with the shaft C, and receiving motion therefrom by means of pinions C2 on the two ends of the shaft G engaging with gear-wheels D on the two ends ofthe shaft D. The shafts G and D rotate continuously, when the pressl is in operation, in the direction indicated by the arrows in Fig. l.

Upon one of thejournals, a, ofthe platen B is fixed a spur-Wheel, B', and upon the shaft D is fixed a-spurpinion,D2 which has its teeth cut away for half its circumference, and is usuallytermed a mutilated wheel.77 The pinion D2 is half the radius ofthe wheel B', and there- 'fore if half its teeth are cut away one revolution of the shaft D and pinion D2 will cause a quarter of a revolution of the platen. At

each quarter of its circumference the wheel B has a long tooth, b, which enables the mutilated pinion D2 to readily gear with the wheel B while said wheel is at rest.

From the above it will be readily understood that between each quarter of a revolution the platen stands stationary for a length of time equal `toits periods of motion,and the teeth b are so placed with reference to the mutilated pinion D2 and the faces ofthe platen that the latter always stops with itsA successive faces in exactly the same position, here represented with two faces in vertical planes and the remaining two faces in horizontal planes.

If desirable, the platen might have any number of sides or faces greater than four, it being in all cases a perfect polygon. In order to hold the platen B against rotat ing or turning backward when its forward motion is stopped, I employ a stop, E, (see Fig. 4,) which'is pivoted to the inner side of one of the side frames.` Upon one end of the platen, at the four corners' or angles, are projections c, (shown in Figs. 4 and 6,) and having notches, and as the platen turns its projectionsc strike the stop E and deect or tilt the same, after tion c and precludes backward ,movement of' the platen.

In front of the platen B, and on the side of IOO its center opposite the stop E, is a second stop, F, pivoted at d to the inner side of the side frame, A, and upon the shaft D is4 a cam, c, which, as said shaft turns, bears against the stop F and raises it just as the mutilated portion of the pinion D2 reaches the wheel B, and the wheel is thereby released from said pinion. The raising of the stop F brings it in the path of the projections c, and when the platen is released and allowed to stop one ot' said projections strikes against the stop F, and the platen is thereby held against turning forward.

Otherforms of stops might be employed to hold 'the platen against accidental turning.

G designates the type-bed of the press, which has, as here represented, a vertical face, and is provided at opposite sides with ribs j', which work in suitable guideways,f, upon tlieinner sides of supplemental side frames, A2, bolted upon the frames A. The bed G being thus guided is free to reciprocate toward and from the center of the platen B, and its face is parallel with the face of the platen, which is presented toward it when the platen comes to a state of rest. The face of the bed G which receives the form is upright or vertical, and this arrangement is very desirable, because the sheet-s may then be fed to the platen on the side which is uppermost and horizontal, and delivered after printing from the horizontal under side. Hence there is less liability of the sheets smutting than there would be ifdelivered from the sides ofthe platen when ina vertical position.

In the side frames, A2, are slots or openings g, and g designates studs or wrist-pins'fixed rigidly in the bed and projecting through said slots oropenings.

Upon the studs g are loose collars or rings g2, which tit the slots or openings, as seen in Fig. 2, and form friction-rollers for aiding in guiding the bedv G in its 'Lreciprocatiou To reciprocate the bed G, I fix crank-pins hin the mutilated pinion D2 on one side of the press, and the wheel D on the other side, and I transmit motion from the crank-pins h to the bed G by means of connecting-rods H, which t at one end on the crank-.pins h and at the otherA end on the wrist-pins g', as shown clearly in Fig. 1.

It is very desirable to be able to regulate the pressure which the form exerts on the paper, and this may be regulated by lengthening or shortening the connecting-rods H, to

cause the bed to approach more or less near the platen and the form to press with more or less force on the paper. The connecting-rods H are here shown as made in two pieces connected by a right-and-left-threaded sleeve, h', and jam-nuts h2, and the rods may be adjusted in length by turning the nuts and sleeve in a well-understood manner.

Iwill now describe the gripers and the means employed to operate them, they being most clearly shown in Figs. 4, 5, and 6.

I designates the gripers or griper-fingers,

Which are fixed upon the usual spindle or shaft,

I', as best shown in Fig. 6. The platen B has a griper shaft and fingers on each of its four faces, and on each shaft is an arm, t', which 7o may be acted upon by a spring, t', as shown in Fig. 6, to hold the gripers tightly against the face ofthe platen.

Fixed to the inner side ofthe frame A ofthe presslisastationary cam,J, (best seen in Fig.4,) and arranged in the path traveled by the arms@ of the griper-shaft l. The projections of the cam J are so arranged that as each set of gripers approach the top ot' the platen the earn acts upon the arm i of the griper-shaft I and 8o raises the gripers, as seen ,in Fig. l, where they remain while the platen is stationary. As the gripers are brought to the under side of the platen the arms t' are again acted von and the gripers movedaway from the faces of the platen to permit the printed card or sheet to fall off, from whence it falls into drawers K or any other suitable receptacle arranged below the platen.

It willbe understood that while the platen 9o is stationary and an impression is being made the gripers on the face ot the platen which'is uppermost remain raised, and the attendant has plenty of time to feed the sheets to be printed, whilenotimeislost, as there must necessarily be where the platen after each impresion must return before the feeding can be done. The faces of the platen are provided v with the usual pivoted clamps, 12, which serve to hold the paper or other packing material roo on the faces of the platen.

I will nowdescribe the inking and ink-distributing apparatus. (Best-shown in Figs. 1, 2, and 3.)

-Upon the outside of each ofthe supplemental frames A2 is a frame, L, which is fitted loosely on the studs or wrist-pins g and comprises armsjj. These two frames L constitute the roller-carriage, and carry the distributing-rollers M and the hiking-rollers N. The 11o bearings It of the distributin'g-rollers'M are attached to rods l, which pass through lugs on\'-` the armsj of the frames L, and are im pelled inward'to hold the rollers upon the ink table or bed O by means of springs m in a well-known manner.l The bearings k ofthe hiking-rollers N are attached to rods l', which pass through lugs on the arms j of the frames L, and are IIS `impelled inward to hold the rollers upon the table or bed O by means of springs m. The 12o frames L, which form the roller-carriage, are free to turn or oscillate on the studs or wristpins g', and the frames are constructed with arc-shaped slots or guides a, which receive through them stationarystuds or pins n', as clearly seen in Fig. l. As the studs or wristpins g are moved back and forth they carry the frames L with them, but said frames, by means ofthe arc-shaped slots aand fixed studs or pins u', are made to turn more than a quarter of a circle, and by such turning or oscillating movement thedistributing-rollersMarecaused to pass from their position shown'inl Fig.'l to their position shown in Fig. 4, thus carrying ink and distributing it over the table or bed O. By the same movement the hiking-rollers N are made to pass from their position shown in Fig. l to their position shown inFig. 4, thus carrying the `ink upon the bed or table O down over theform.

The journals o of the distributing-rollers M are screw-threaded, one right and the other left, as seen Fig. 3; and as said rollers are turned by contact `with the bed or table in passing over the saine the threaded journals cause them to move endwise in opposite. directions, effecting a more even and uniform distribution of the ink over the bed or table O.

P designates the ink-fountain, and P the fountain-roller arranged therein. The bottom P2 ofthe fountain is'tlexible or yielding, and Q' designates an eccentric-roller, which may be turned to press the said yielding bottom up against the roller P and allow more or less ink to be carried ont by said roller. After the said eccentric-roller Q, is adjusted it may be held in place by set-screws '1o. The eccentricroller Q is as 1ong,or nearly as long, as the bottom P2, and therefore supports the same at all points in its length and holds it against the `fountain-roller P'.

Upon thejonrnal of the fbuntain-roller P is a ratchet-Wheel, q, and said wheel and roller are turned by a pawl, i', carried bythe lever S, which is pivoted ats. lWhen the roller-carriage L descends to the position shown in Fig. 1 it strikes against one end of the lever S and causes the pawl r to turn the ratchet-wheelq and the roller P. When the carriage rises the lever S is returned to its elevated position by its Weighted end t or by a spring. (Not here shown.)

It will be understood that the arrangement of the continuously-rotatin g crank-shaft D and the bed Gr on opposite sides of the platen B enables me to have long connectingrods H for operating the bed, thereby moving it with littlefriction, and at the Sametime to produce a compact and sling arrangement of mechanism.

I am aware, as I. have before stated, that there is a class of presses in which a platen having an intermittent rotary motion is combined with a reciprocating bed; and I am also aware that one, two, or four beds have been arranged to operate in connection with one platen. Hence I do not claim this as ofmy invention, but only claim certain improve ments on such presses, whereby they are rendered more compact, simple, and efficient.

Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. In a printing-press, the combination of the platen B, of square or polygonal form, the continuously-rotated crank-shaft D on one side thereof', the bed G, having an upright face arranged on the opposite side of' said platen, the gear-wheel B and the mutilated pinion Dz on the shaft D, for rotating the platen intermittently, and connecting-rods H on opposite sides of the press, forming a direct connection between tlie shaft D and the bed, substantially as specified.

2. The combination ofthe platen B, having notched projections c, the pivoted stops E F, and theshat't D and cam e, for shiftingthe stop F, all substantially as specified.

3. In a prin tingpress, the combination ofan intermittently-rotating platen, of square or.po lygonal form, a reciprocating bed movable toward and from the platen and. having` an upright face, a frame in which said bed is movable, an ink-distributing table supported on said frame, and a roller-carriage operated by the movement of the bed, and carrying inkingrollers which are caused to travel over said table and down over the form, substantially as specified.

4. The combination ot' the bed G, provided with wrist-pins g', the crank-shaft D, and the connecting-rods H, fitting said wrist-pins, the distributing-table O above` the bed,- a rollercarriage fulcrumed on said wrist-pins,and having an arc-shaped slot or slots,a, and the fixed stud or studs a', fitting therein, substantially as specified.

5.- The combination of the bed G, provided with wrist-pins g', the roller-carriage composed of the frames L, having arms j j', and arcshaped slots a, rollers M N, carried by said i ICO

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