US98087A - Improvement in printing-presses - Google Patents

Description

N.PETERS, PHOTO-LITHOGRAPHER. WASHINGTON. D C,

'CHARLES MoNTAeUE, or BoSToN, MASSACHUSETTS, ASsIeNoE To CYRIL C. CHILD, -OF SAME PLACE.

IMPROVEMENT IN vPRINTING-PRESSES.

Specification forming part 0f Letters Patent N0. 98,087, dated December 21, 1869.

CASE A.

To all whom it may concer-u:

Be it known thatI, CHARLES MoNTAGUE, of Boston, in the county of Suffolk, and State of Massachusetts, have invented certain new and useful Improvements in Printing-Presses,

said improvements being more particularly applicable to what is known in the trade as the drum-cylinder press; and I do hereby declare the following to be a full, clear, and exact description thereof, taken in with the accompanying drawings, making a part of this .speciiicatiom and the letters of reference marked thereon, in which- Figure l is a side elevation of a press embodying my improvements. Fig. 2 is an end elevation, with the lower girt removed. Fig. 3 is a plan, with feed-table and friction delivery-roll removed. Fig. 4 is a vertical transverse section on line x .fr on Fig. 3; and Fig. 5 is a vertical transverse section on line z z on Fig. 3, showing' the parts attached to the frame opposite to the one shown in Fig. 4, the position of cylinders being shown by circles.

My invention relates, in the iirst place, to

lthe mode of operating the type-bed and the 'impression-cylinder; and it consists, first, in

the use of a vibrating lever, for moving the type-bed, constructed in two parts, one of which is made to slide out and into the other,

somewhat like the joints of a telescope, so that the upper end of said lever may pensing with the use of a link,) and move in `a direct line with the bed, the' upper portion of 'said lever moving out or into the lower portion, as the distance from the fulcrum of said lever to the point of attachment to the bed is greater or lesser in the different parts of the movement of the bed.

It also consists in communicating the m0- tion of the crank-shaft, that operates the bed, to the impression-cylinder, by the use of a gear-wheel hung upon a stud outside of the end of said crank-shaft, and so hung that its axis shall be eccentric to the axis of said shaft, and carrying a crank-pin permanently at tached thereto, which projects inwardly, and lits into 'a slotv cut in the main gear on the end of the crank-shaft, as represented in the connection be attached vdirectly to the under side oi' the bed, (disdrawings; or the slot may be made in a plain crank or lever, distinct from the main drivinggear, and said gear may be placed at any intermediate point between the two ends of the shaft, the slot being of such a form as required, acting, in conjunction with the pin working in said slot, to give to the impressioncylinder a movement that will exactly coincide with the motion of the bed during the whole time of taking the impression.

My invention also relates to a device by means of which the cylinder may be raised so as to throw off the impression at the will of the operator; and it consists in hanging the impression-cylinder in bearingsformed in f radius arms or levers, placed horizontally, and

pivoted to the frame of the machine, and at-y taching to said levers, at a point directly under the cylinder, pendent bars or rods, fitted to slide in bearings attached to each frame, the lower end of said bars or rods being provided with wrist pins or studs, which iit into cam-slots, cut in vibrating arms or levers, on

' either side of the machine, and connected together by a system of links, so that they will both move together, and raise or lower both ends of the cylinder alike, one of said vibrating cam-levers being provided with a long 'arm or handle, by means of which the operator can raise the cylinder, to throw off theimpression at pleasure.

My invention also relates to the means of operating and controlling the nippers; and it consists, first, in the use of a springhook for closing the nippers of the take-oft' cylinder upon the sheet on the impression-cylinder, said spring-hook being moved into position, to operate the nipper-shaft attached to the take-off cylinder, at the proper time, by a pin set in the end of the impression-cylinder.

It also consists in giving to the nippers a movement through an arc of about one hundred and sixty degrees, and also in forming the clamps that secure the ily-sheet to the irnpression-cylinder in the form of a fork bent yover onto the impression-surface of .the cylinder, but not to extend beyond the space'allotf ted for the margin of the sheet, thus serving the purpose of raising the edge of the sheet slightly above the surface ofthe cylinder, the

position. Vby their upper ends to the movable ends of nippers being so arranged on the take-oh1 cylinder as to strike under the sheet through the space between the two prongs of the fork, and thus facilitate the taking oi the sheet.

In the drawings, A represents the side frames of the machine, connected together by girts A', and B is the type-bed, mounted upon suitable slides B'. C is a vibrating lever, made in two parts and attached to a rockershaft, D, hung in bearings near the bottom of the frame, said lever being provided with an extension-arm, G',itted to slide in the part C, the upper end of.' said arm being attached to the bed by the pin a. The lever C is also provided with a slot or groove, b, in which the block c is fitted so as to slide freely therein, said block being tted t0 the wrist-pin on the crank E, mounted upon the inner end o' the shaft F, arranged to rotate in suitable bearings provided for the purpose. G is a spurgear wheel mounted on the outer end of the shaft F, and is acted upon by the pinion F', by which the machine is driven.

H is an intermediate gear, which serves to transmit motion from the driving-pinion to the large gear H', mounted upon a stud set in the inner side of a stand, bolted to the frame in such a manner as to leave a free space in' which the gear may revolve, and carries the wrist-pin el, projecting inwardly from the inn er face of said gear-wheel, and tting into the slot c made in the gear-wheel I. The gear I is mounted on the shaft f of the cylinder J, the two gears being so arranged as to revolve side by side, but in paths eccentric to each other, the gear I, and consequently the cylin der J, being driven by the action of the pin d in the slot c, the form of the slot e and the amount of eccentricity between the two gears H' and I being such as required to give to the cylinder J a motion that shall exactly coincide with the motion ofthe bed B during the whole time of taking the impression.

The impression-cylinder J is of the kind Vusually termed a drum-cylinder," and has a portion of its circumference cut away or reduced to a smaller diameter in the usual manpner, and is mounted in bearings in the radius arms or levers g g, which are pivoted to the frames by the pins h h nearly in a horizontal t' t' are two bars or rods, attached the levers g, and fitted to move in the slides j, attached to the frames, and provided with pins 7c at their lower ends, which tit into the cam-slots Z in the vibrating levers m and m1. The levers m and m1 are pivoted to the frame, and are connected together by the links a and a', and the lever o pivoted to the rear girt by the pin p. The lever m is provided with a horizontal arm, m2, arranged so as to be accessible to the operator, by depressing which he can raise the impression-cylinder at any moment, and prevent the sheet from being printed.

The lever mI is provided with an arm, m3, extending downward from its fulcrum-pin,

against which the cam q acts to reverse the motion ot' the levers m and ml, to move the impression-cylinder down again into the proper position to give an impression.

r 1^ are clamps for securing the fly-sheet to the cylinder, and are forked and bent over onto the impression-surface of the cylinder, but do not extend beyond the width of the nan rowest margin, and also serve to raise the edge of the sheet that is being printed a little above the surface oi' the cylinder, and thus facilitate the removal of the sheet by the nippers attached to the take-o cylinder. s is the nipper-shaft, and t t the nippers attached to the same, and serve to take the sheet from the feed-table and hold it while the impression is being printed. The nippershaft s is provided at one end with an arm, u, attached by its middle to said shaft, and having a cam face or lip upon one side, which strikes against the pin u as the cylinder revolves in the direction of the arrow, and gives a half-revclution to the nipper-shaft, and causes the nippers to close upon the sheet and carry it around with the cylinder. -'u' is another pin, set in the frame in the proper position to be struck by the cam-face of the arm u as the cylinder continues to revolve, and turn the nipper-shaft in the opposite direction, and cause the nippers to release the sheet and place them in a position to take another sheet. u' is a spring by which the nippers are held in either position in which they may be placed. K is the take-off cylinder, hung in xed bearings in the frame, and provided with a nipper-shaft, fw, carrying a set of nippers, al al, so arranged and constructed that when they are revolved they strike under the sheet, through the space between the forks of the clamps 1 r, just at the right time to take the sheet as itis released from the nippers attached to the impression-cylinder. b is the arm,by which the nipper-shaft w is vibrated in a manner similar to the nipper-shaft on the impression-cylinder, except that it is not operated at every revolution of the take-off cylinder, but once to each revolution of the impression-cylinder. c1 is a spring-hook, attached to the frame in such a position that the arm bl may revolve with the cylinder K without coming in contact with it, except when it is thrown in to the position shown in Fig. 5 bythe pin d1 inserted in the end of the impression-cylinder J, and as the pin can come in contact with said spring-hook but once to every revolution of the impression-cylinder, it follows that the nippers attached to the cylinder K cannot be operated more than once to each revolution of the impression-cylinder, without regard to the number of revolutions that the take-off cylinder K may make. c1 is apin,

xed in the frame in such a position as to strike the arm b1 if the nippers approach it while closed upon a sheet, and open the nippers, and allow the sheet to be conveyed to the ily by means of friction-rollj". g' is a spring by which the nipper-shait is held in either position which it may happen to be in until it isacted upon by the pin 61 or the hook c1. The cylinder K is geared from the impressioncylinder by the wheel h1, so that their outer surfaces shall move at the same speed.

a and a3 are the composition rollers forrolling the type-form, mounted in Xed bearings on the frame. b2 is the cylinder or roll on which the inkis distributed from the fountain by the traversing roll in common use, but not shown in the drawings. c2 is the ink-cylinder, hung in bearings in the radius arms or levers d2, pivoted to the frame, and having an arm projecting downward between the shafts of the inking-rollers, in the lower end of which is inserted a pin, d3, which, being acted upon by the incline c2 on the side of the bed as the bed is moved under the inking-rollers when moving` from the rear to the front of the machine, lifts the ink-cylinder c2 off from the inking-rollers a2 and a3, leaving them free to roll the type-form without being pressed down with any unnecessary weight. When the cylinder c2 is lifted, it is brought in contact with the distributing-cylinder b2, where it remains revolving in contact with said Vcylinder until the bed has moved back and nearly completed the impression, when it is again let down in contact with the composition-rollers, and supplies them with ink, remaining in contact with said rollers until the incline e2 again comes in contact with the pin d3. L is the feed-table, and M is a crank by means of which the machine is operated.'

The operation of my machine is as follows: The sheets are placed upon the inclined feedtable L, and fed to the machine in the usual manner, the machine being set in motion by operating the crank M. The bed Bis made to reciprocate upon its slides, and by means of the gearing rotating in eccentric paths and connected by pin d and slot e. The impression-cylinder is made to revolve in exact correspondence with the bed, and at the proper time in the revolution of the impression-cylinder the arm u comes in contact with the pin c, and gives a semi-revolution to the nippershafts, and causes the nippers to catch the sheet, thev spring u serving tol hold the nippers firmly onto the sheet when they have taken hold of it. Just at this point the bed has completed its motion in one direction, and, by passing under the full or impression side of the cylinder J, has given an impression to the sheet carried by it, which has been released and caught by the take-oli' cylinder K. By the continuation of the motion of the crank-shaft the bed is moved on its returnstroke,passing under the side of the cylinder that is cut away or reduced in diameter, so that the type will not come in contact with the cylinder.

As the machine continues to revolve the sheet is carried around with the impressioncylinder and carried between the cylinder and bed, and receives an impression, and when the impression-cylinder has arrived at the position shown in- Fig. 4 the nippers t t release the sheet just in time to allow the nippers al al, attached to the take-off cylinder, to take it as they close upon it by the action of the springhook c1 upon the arms b on the end of the nipper-shaft w, the spring-hook c being thrown into such a position by the action of the pin dl (inserted in the end of the cylinder J that the arm b1 will come in contact with it, and cause the nippers to make a semi-revolution,

the combined action of the spring-hook c1 and the spring g', serving to effect the closing of the nippers, and the combined action of the pin e and the spring g serving to open the nippers at the proper time, just after the sheet has been carried under the friction-roll f', which conveys it to the fly. (Not shown in the drawings.)

It' at any time the operator wishes to throw off the impression to prevent a sheet from bein g printed, or to give his type an extra amount of rolling, he can do so by simply depressing the horizontal arm m2, which causes the levers m and m1 to vibrate, and, by the action of the cam-slots in said levers, raise the cylinder, so

that the bed may pass under it without giving an impression.

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

l. The extensible vibrating lever C, in combination with a reciprocating type-bed, substantially as described.

2. In combination with the impression-cylinder of a cylinder-press, the gears H' and I, connectedtogether by the slot e and pin d, constructed and operated substantially as described.

3. Raising the cylinder J to arrest the impression, at the will of the operator, by means of the cam-levers m and m1 and the handlever m2, substantially as described.

4. In combination with the cam-levers m and m1 and hand-lever m2, the cam p, for throwing on the impression, substantially as described.

5. In combination with the cylinder J, the pin di, set in the end of said cylinder, the spring-hook c1, spring g', and arm b1,constructed and operated substantially as described, for the purposes specified.

Executed at Boston this 11th day of Julie, 1869.

cHAs. MONTAGUE.

Witnesses N. C. LOMBARD, FRANK ALLEN.

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