US648423A

US648423A - Sheet-delivery apparatus for printing-presses.

Info

Publication number: US648423A
Application number: US67143998A
Authority: US
Inventors: Thomas M North
Original assignee: THEODORE H MEAD
Current assignee: THEODORE H MEAD
Priority date: 1898-02-24
Filing date: 1898-02-24
Publication date: 1900-05-01
Anticipated expiration: 1917-05-01

Description

No. 648,423. Patented May I', |900.,

T. M. NORTH.

VSHEET DELIVERY APPARATUSFOR PRINTING PRESSES.

(Application filed Feb. 24, 1898.) (No Model.) 7 Sheets-Sheet l.

Patented May I, I900. T. M. NORTH.

(A plication filed Feb. 24, 1898.)

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SHEET DELIVERY APPARATUS FOR PRINTING PRESSES;

(No Model.)

Patented May l, 1900.

I T. m. NORTH. SHEET DELIVERY APPARATUS FOR PRINTING PBESSES.

(Application filed Feb. 24, 1898.) (No Model.) 7 Sheets-Sheet 3,

rue uamus PUERS c0, Moro-Luna" wAsumuTON. mV (1 No. 648,423. Patented May I, I900.

T. M. NORTH. SHEET DELIVERY APPARATUS FORPRINTING PiiESSES- 7 Sheets-8heet 4.

(Application filed Fabl 24, 1898.-)

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(No Model.)

wzrzns co, warmly No. 648,423. a Patented May I900;

T. M. NORTH. SHEET DELIVERY APPARATUS FOR PRINTING .PRESSES.

(Application filed Feb. 24, 1898.) (No Model.) 7 Sheet's.$heet 5.

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Patented May I, I900.

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SHEET DELIVERY APPARATUS FOR PRINTING PRESSES.

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(Application filed. Feb. 24, 1898.)

(No Model.)

Invert fir I I AM Patented May I, I900. T. M. NORTH;

SHEET DELIVERY APPARATUS FOR PRINTING PRESSES.

(No Model.)

(Application filed Feb. '24, 1898.)

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UNITED STATES.

PATENT OFFICE.

THOMAS M. NORTH, OF NEW YORK, N. Y., ASSIGNOR TO ROBERT HOE, THEODORE H. MEAD, AND CHARLES W. CARPENTER, OF SAME PLACE.

SHEET-DELIVERY APPARATUS FOR PRlNTlNG-PRES SES SPECIFICATION forming part of Letters Patent No. 648,423, dated May 1, 1900. i 7 Application filed February 24, 1898. Serial No.6'71,43. (N0 model.)

To all whom it may concern:

Be it known that l, THOMAS M. NORTH, subject of the Queen of Great Britain, residing at New York city, county of Kings, and. State of New York, have invented certain new and useful Improvements in Sheet-Delivery Apparatus for Printing-Presses, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates chiefly to deliveries for printing-presses. Its especial object is to provide an efficient front delivery for a stopcylinder press. Since the sheets in these presses are taken from the impression-cylinder while the latter is at rest, they cannot be advanced by the movementof the cylinder, and therefore must be removed from the cyl-. inder by grippers orequivalent mechanism. It is desirable in these presses to cause the delivery to carry the sheet to such a distance from the impression-cylinder as to clear the inking-rollers and other parts of the press. A movement of reciprocation of the carriagev throughout this distance, however, would consume more than the interval of time between successive presentations of printed sheets by the impression-cylinder. In order to secure a sufficient distance of movement of the sheet in delivering the same and to effect this within the time allowed by the op eration of the printing mechanism, I have herein arranged devices whereby each sheet receives two successive forward movements from the reciprocating delivery-carriage substantially equal in length to the distance My invention also includes the use of an air-blast for facilitating the separation of the sheet from the impression=cylinder. It ordi narily requires considerable strain upon the paper to draw a sheet from the impressioncylinder while the latter is at rest, and it is therefore desirable to aid the separation. I find that this can be effectively accomplished by the use of the air-blast.

Referring to the drawings annexed to this specification, Figure 1 is a side elevation of the delivery, showing the parts in the position in which they are when the sheet has just been nipped by the grippers of the delivery. Fig. 2 is a similar view showing the parts in the position in which they are when the sheet has just been released by the grippers of the delivery. Fig. 3 is a similar viewshowing the position of the parts as the traveling carriage is moving back from the position shown in Fig. 2 to the position shown in Fig. 1. Fig.

4 is a view, on an enlarged scale, of part of the mechanismshown in Fig. 1, the position of the parts being the same as that shown in that figure. Fig. 5 shows a part of the mechanism on an enlargedscale, the position of the parts being that in which the carriage is moving forward from the position shown in Fig. 1 to the position shown in Fig.2. Fig. 6 is a sectional view, on an enlarged scale, on the line 6 6 of Fig. 1. Fig. 7 is a sectional elevation, on like scale, on the line 7 7 of Fig. 3. Figs. 8 and 9 are side and sectional elevations of mechanism for producing the air-blast. Figs. 10 and 11 are detail views illustrating the construction of the one-way clutch by which secure delivery of the sheet ata distance from v the impression-cylinder fully sufficient to meet the requirements of a convenient delivery, and I efiect this delivery well within the time allowed between thesuccessive opera-- tions of the printing mechanism.

the gear on one of the tape rolls is, connected to its roll.

Referring to the drawings, A is the frame to which the delivery is attached, and B the impression-cylinder. The delivery consists of the traveling carriage composed of side pieces 1 2, properly joined together and supported by four rollers 3 upon tracks 4, which are a part of the frame of the machine. The side pieces are provided with teeth on their under sides,with which mesh gear-wheels 5 6, driven,

through a pinion 7, by a vertically-reciprocating rack-bar 8. The delivery-carriage is thus 'madeduring the operation of the machine to continuously reciprocate forward and back along the track-rails. From the rear edge of the carriage rise the extensions 9 10, carrying the gripper-rod 11, provided with the grippers cam-16.

grippers of theimpression-cylinder may be of v 12, cooperating with the abutments 13, also carried by the extensions 9 10. The gripperrod'll is normally held with its grippers in a closed position by the. pressure of the spring 14. The gripper-rod is also provided with an arm 15 and cam-roll, (shown in broken lines in Fig. 4,) whereby the grippers are opened by contact of the cam-roll with the pivoted The mechanism for operating the any suitable construction, a. form of such mechanism now in use being shown partlyin broken linesin Fig. 4. The cylinder-grippers are mounted upon the gripper-shaft 18, hav-' persr The lever is'pivoted at 26. tothe position shownin broken lines in Fig. 4, thereframe of the machine and is connected by a link-arm 27 to a cam. (Not shown.) The upper end of this lever is at other times-in the operation of themachi-ne in a position to the right of that shown in broken lines in Fig. 4. When the impression-cylinder comes toastop and the grippers 17 are to be opened,

the link 27 is moved by its cam to push the upper end of the lever 25 forward into the by through stud--24 swinging the lever 21 and rotating the gripper-shaft 18. The cam 16 is connected with the lever 25 by a link 28, so that as the-lever 25 moves forward, as just described, the cam 16' is carried with it and istherefore moved out of the position in which .it is in contact with the bowl on arm 15, the

grippers 12. being then permitted to come to theirclosed position, as shown in Fig. 4. The forward edge of the sheet shown at29 in Fig. 4

' is lifted at the proper moment into the '.posi

tion to be grasped by the grippers 12 by the fingers 30, mounted upon shaft31, which is appropriately moved at the proper time by a cam and suitable connections. (Not shown.)

As a means for facilitating the detachment of the sheet from theimpression-oylinder it. is desirable to provide an air-blast, which may a be directed against the under side of the sheet in'an'y suit-able manner and between the sheet and the cylinder. A blast of air thus directed between the sheet and the cylinder relieves the friction between the two andenables the sheet to be very easily withdrawn. A 'c'onvenient means for the purpose is secured by making the arms 30 and the shaft,

31 hollow-and connecting them witha source of compressed air, as shown in Figs. 8-and'9. i Referring to those figures, it will b'eseenthat the hollow shaft 31 is connected by flexible) tubing 32 with an axial opening 33 through the shaft of the impression-cylinder, which connects with a tube 34, and thereby with a cylinder 35, in which an air-compressing piston 36 is operated by a connecting-rod 37, which in. turn is moved by a crank 100 on the shaft 41. A cook 38 is provided in the tube 34, which is normally held in its closed position by the spring 39 (see Fig.8) and is opened at the point where an air-blast is required by the cam-shaft 40,. operated atthe proper time by a cam (not shown) on the shaft 41. The parts are shown in Fig. 8 with the cock 38 open. .In this position of the parts the blast is directed through the hollow fingers 30 against the under portion of the sheet and the air is forced between the sheet and the impression-cylinder throughout a considerable portion of the area of contact of the sheet and the impression cylinder. The movement of the sheet under the pull of the carrier and its grippers .is thus very substantially facilitated. As the carriagemoves forward, drawing the sheet with it, the sheet is drawn over and supported by a series of finger-s42, free at their forwa'rdends and mounted at their rear ends on'holders or arms 43, fixed to a shaft44. These fingers are given a reciprocating movement verticallyand also a variable inclination, for a purpose hereinafterpointed out, by the following means: The shaft 44 is mounted so as to rotate in arms 45,

fixed to shaft46, journal'ed in the frame. The shaft 46 has fastened upon it anotherarm 47,

connected by link 48 with a cam. -(Not shown.) The shaft 44 has fixed upon itan arm 49 provided with a bowl 50, adapted to travel in a short path-cam 51. In this construction it will be seen that as the cam-link 48 rises the shaft-44 will be liftedyand with it the fingers 42. At the same time the inclination of the fingers will be changed by the movement of the arm 49 under the control of the path-cam 51. Thus when the cam-link 48 is in its lower position, as shown in Fig. 4, thefingers 42 will be in theposition shown in Fig. 4-that is, depressed and inclined downwardly toward: the front of the ma chine. When the cam-link 48 is in its upper position, the parts will be as shown in Fig 3, the fingers 42 being in their highest position and also being horizontal. In Fig. 5 the .parts are'shown about midway between the positions of Figs. 3 and 4. 1

The traveling carriage is provided with a number of tape-pulleys 52, mounted upon a shaft 53 at the rear end of the carriage. The tapes 54 pass about these pulleys and also about a roll 55, journaled in the forwardend of the carriage. The shaft 56 of the roll'55 carries at one end a gear-wheel 5,7, which engages with a rack 58, formed on the under a side of one of the rails 4. This gea'r-wheel'is connected with the shaft 56 by a one-way clutch, (shown on an enlarged scale in Fig. 10,) so that the shaft 56 will be rotated by the gear-wheel 57 .as the carriage moves backward and will not be moved thereby as the carriage moves forward. In the figure referred to 63 is a toothed wheel secured to the shaft and 64 are rollers.

When the sheet has been carried by the forward movement of the carriage to the position shown in Fig. 2, the gripper-rod 11 is operated by the fixed cam 59 (see Figs. 1 and 2) to open the grippers and release the sheet, which then rests upon the fingers 42, as shown in Fig. 2. The carriage now retreats and the fingers 42 continue to hold the sheet in its elevated position until the tapes 5i pass under the sheet, when the fingers are caused to descend by the operation of the cam-link 48, depositing the sheet upon the tapes 54. The next forward reciprocation of the carriage carries .the sheet now resting upon the tapes forward over the delivery-board 60.

It is desirable to make the distance between the tape-shafts 53 and 56 greater than the length of the sheet, and it is therefore desirable to provide a means for causing the tapes to move forward during a portion of the forward movement of the carriage, so as to bring the forward edge of the sheet even with the forward end of the carriage when the latter reaches its forward position. To accomplish this, the end of the shaft 56 opposite to that on which the gear-wheel 57 is mounted is provided with a friction-disk 61, which engages with a friction-arm 62 of appropriate length.

The friction-disk 61 is, like the gear-wheel 57,

connected to the shaft 56 by a one-way clutch, so that it will only cause the shaft 56 to rotate while the carriage is moving forward. By this mechanism the forward edge of the sheet will be brought to the forward end of the carriage before the carriage reaches its forwardposition, and as the carriage retreats the sheet will be fed forward by the tapes and deposited upon the delivery-table, as shown in Fig. 3.

65 are guide-rods ment of the sheet.

What I claim is- 1. In asheet-deli\-*ery,the combination with a reciprocating carriage provided with grippers, of tapes mounted upon the carriage, means for transferring the sheet from the grippers to the tapes, and means for moving the tapes on the backward movement of the carriage to deliver the sheet, substantially as described.

2. In asheetdelivery,the combination with a reciprocating carriage provided with grippers, of tapes mounted upon the carriage, means for transferring the sheet from the grippers to the tapes, means for moving the tapes on the forward movement of the carriage sufficiently to bring the sheet to position for convenient delivery, and means for moving the tapes on the backward movement of the carriage to deliver the sheet, substantially as described.

3. The combination of a stop impressioncylinder, a reciprocating carriage provided with grippers, means for causing the gripfor preventing displacepers to grasp the sheet while the impressioncylinder is at rest, convey it forward and deposit it, and means for relieving the friction between the sheet and the cylinder as it is withdrawn, substantially as described.

4. The combination of a stop impressioncylinder, a reciprocating carriage provided with grippers, means for causing the grippers to grasp the sheet while the impressioncylinder is at rest, tapes mounted upon the carriage, means for transferring the sheet from the grippers to the tapes, and means for moving the tapes to deliver the sheet, substantially as described.

5. The combination of a stop impressioncylinder, a reciprocating carriage provided with grippers, means for causing the grippers to grasp the sheet while the impressioncylinder is at rest, tapes mounted upon the carriage, means for transferring the sheet from the grippers to the tapes, and means for moving the tapes on the backward movement of the carriage to deliver the sheet, substantially as described.

6. The combination of a stop impressioncylinder, a reciprocating carriage provided with grippers, means for causing the grippers to grasp the sheet while the impressioncylinder is at rest, tapes mounted upon the carriage, means for transferring the sheet from the grippers to the tapes, means for moving the tapes on the forward movement of the carriage sufficiently to bring the sheet to position for convenient delivery,and means for moving the tapes on the backward movement of the carriage to deliver the sheet, substantially as described.

7. A reciprocating sheet-delivery carriage provided with means for grasping a sheet and conveying it forward a distance equal to the reciprocation of the carriage, means for supporting the sheet while the carriage makes a return reciprocation, means for causing the sheet to be again engaged by the carriage and carried forward toward the point of final delivery, and means on the carriage for advancing the sheet with reference to the carriage, substantially as described. 7

8. A reciprocating sheet-delivery carriage provided with means for grasping a sheet and conveying it forward a distance equal to the reciprocation of the carriage, means for supporting the sheet while the carriage makes a return reciprocation, means for causing the sheet to be again engaged by the carriage and carried forward toward the point of final delivery, tapes on said carriage, and means for causing the tapes to advance the sheet with reference to the carriage, substantially as described.

9. A reciprocating sheet-delivery carriage provided with means for grasping a sheet and conveying it forward a distance equal to the ."conveying it forward a distance equal to the reciprocation of the carriage, means for supcarried forward toward the point of final 1e "livery, tapes on said carriage, and means for causing the tapes to move in order to deliver the sheet-from the carriage to the piling-table, substantiallyas described. 7

10. A reciprocating sheet-delivery carriage provided with means for graspinga sheet and sheet with reference to the carriage and to 'deliverthesheet from the carriage to the piling-table, substantially as described.

11. The combination with a reciprocating sheet-delivery carriage, of means for grasping the sheet and conveying it forward a distance equal to the reciprocation of the carriage, a

vertically-reciprocating support for the sheet while the carriage is making itsreturn recip-.

rocation, means for causing the support to rise at the proper time to receive .the sheet from the carriage, and means for'ca-using it todescend and'deposit the sheet upon the carriage at the proper time, substantially-as described. i

12. In a delivery mechanism, the combination of asheet-su'pport movable vertically, and a carriage supporting aset of tapes, the

mechanism being so' arranged'that the sheetsupport will deposit the sheet upon the tapes and that the latter will carry the sheet to the I point of final delivery, substantially as described. 1 K 13. In a'delivery mechanism, the combination of sheet-supporting fingers or bars m'ovable in vertical planes, a carriage supporting aset of tapes, the mechanism beingso arranged that the sheet-supporting fingers or bars will deposit the sheet upon the tapes and 1 that the latter will carry the shee'tto the point I of'final delivery, substantially as described; 14:. In a delivery mechanism, the combina-i tion of a reciprocating carriage a set of tapes, carried thereby, a sheet-support mounted in- 7 5o dependently of the carriage, means for depositing a sheet upon the support, and means for l transferring the-sheet from the support to the set of tapes on carriage by which it is carried forward toward the point of final delivery,

substantially as described. 15. In a delivery mechanism, the combination of a reciprocating carriage, grippers carried thereby, and traveling tapes also carried by the carriage for conveying the sheet from i V 645,4231 V 'the position to which it is carried by the grippers, substantially as described.

16. The combination of a stop impressioncylinder, a sheet-delivery carriage provided with grippers, meansfor causing the grippers to grasp a sheet while the impressioncylinder is at rest, means for reciprocating the carriage between-the sheet-receiving position and a position over the piling-table, and aset of tapes operating to support the sheet during the forward movement of the carriage and then to feed the sheet therefrom-during the return of the carriage, substantially as described. i

17. The combination of an impression-cylinder, means for receiving a'she'et therefrom, and an air-blast for facilitating the separation of the sheet fro'mthe impression-cylinder, said air-blast being directed between the sheet and the cylinder and operating to re lieve the friction between the two, substantially as described. V

18. The combination of a stop impressioncylinder, means for taking a sheet therefrom while thecylinder is at rest, and an air-blast for facilitating the separation of the sheet from the impression-cylinder,said air-blast beingdirected between the sheet and the 'cyh inder and operating to relieve the friction between the two, substantially as described.

19. The combination with a sheet-carrying cylinder, of means for withdrawing a sheet therefrom, and means for delivering a blast of air between the sheet and the cylinder while the sheet is being withdrawn, substantially as described.

20. The combination with a sheet-carrying cylinder, of means for directing a blast of air between the sheet and the cylinder, and means for withdrawing the sheet, said means operating to withdraw the sheet in a plane cutting the plane in which the air-blast is delivered, substantially as. described.

21. The combination with a stop impression-cylinder, of a set of grippers for removin g a sheet from the cylinder, and an air-blast operating to deliver a blast of airbetweenthe sheet and the cylinder in such a manner as to relieve the friction betweenthe two as the sheet is being withdrawn, substantially as described.

. In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

I THOMAS M. NORTH.

\Vitnesses: v a I F. W'. H. CRANE, E. L. SPEIR.

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