US1203878A

US1203878A - Delivery mechanism for printing-presses.

Info

Publication number: US1203878A
Application number: US8375916A
Authority: US
Inventors: Winfield S Huson; Christen R Kaddeland
Original assignee: WHITLOCK PRINTING PRESS Manufacturing CO
Current assignee: WHITLOCK PRINTING PRESS Manufacturing Co
Priority date: 1916-03-13
Filing date: 1916-03-13
Publication date: 1916-11-07
Anticipated expiration: 1933-11-07

Description

W. S. HUSON & C; R

DELIVERY MECHANISM FOR PRINTING PRESSES.

KADDELAND.

APPLICATION FILED MAR. 13. 1916.

Patented Nov. 7, 1916.

' 3 SHEETSSHEET 1 w. s. HUSON & c. R. KADDELAND. DELIVERY MECHANISM FOR PRINTING PRESSES. APPLICATION FILED MAR. 13, I916.

' 1,203,878. Patented Nov. 7', 1916.

3 SHEETS-SHEET 2.

W. S. HUSON & C. R. KADDELAND.

DELIVERY MECHANISM FOR PRINTING PRESSES. APPLICATION FILED MAR. I3, 1916.

l ,2Q3,878. Patented Nov. 7, 1916.

3 SHEETS-SHEET 3.

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winrrnnn s. Boson, or nnnn AND cnnisrnn n. nazonfnna'nn, or SHELTON, connncrrcn'r, ASSIGNORS we can wmrnocx rninrrne rnass rune. co, or DERBY,

GOIQ'NECTICUT, A. COBEGBATIOIN.

Specification of Letters Patent.

Fatented Nov. 7, 19rd.

Application filed Karen 13, 1916. Serial Ho. 83,759.

To 013 whom it may concern Be it known that we, Wiurrnnn g. linens and Cnnrs'rnn R. KAonEL'ANn, citizens of the United States, residing, respectively, at Derby, in the county of New Haven and State of Connecticut, and at Shelton, in the county of Fairfield and State of Connectiout, have invented a new and useful improvement in Delivery Mechanism for Printing-Presses; and we do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, andrepresent, in-

Figure 1 a broken view in left-hand side elevation, showing a cylinder printing press provided with ourimproved delivery mechanism. Fig. 2 a plan view thereof. Fig. 3 a broken view in vertical longitudinalsection of our improved delivery mechanism showing the reciprocating tape-carriage at the limit of its inward excursion. Fig. 4 a corresponding view showing the tape-carriage at the limit of its outward excursion. Fig. 5 a detail view in left-hand side elevation, showing the tripping-head together with thetripping-blocks. Fig. 6 a view in vertical section on the line a-b of Fig. 5. Fig. 7 a broken view in longitudinal section of another application of our invention. Fig. 8 a broken view thereof.

Qur invention relates to an improved delivery mechanism for cylinder printing presses of the type characterized by the use of a reciprocating tape-carriage or slide reduced and increased in speed. at the ends of its stroke to permit it to be reversed and provided with intermittently actuated tapes, the object being to provide simple and reliable means for insuring the uniform and accurate delivery of the sheets upon the variably movable tapes upon which they are i ed at a uniform rate of speed.

With these ends in view, our invention consists in. a delivery mechanism having certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claims.

in carrying out our invention as herein shown, we employ a series of sheet-stop lingers 2 having their outer ends bent downward, and adjustably fastened by machine permit it to be reversed. The said rock arms a are spaced at intervals upon the shaft 5 at points above the intermittently actuated extensible tapes 8 thereof, so that when the shaft is appropriately rocked the downwardly turned outer ends of the fingers will pass downward between the tapes so as to intersect the path in which the oncoming sheets travel. The delivery mechanism now being described is the type of delivery mechanism commonly known as a multi-stage delivery. We have shown it as handling two sheets 9 and 10. As the fingers 2 are located well toward the rear end of the reciprocating tape-carriage, they will co-act with the on-coming sheet soon after the same is delivered to the tapes over a bridge 11 from the impression cylinder 12 which is rotated at a uniform speed by a large cylinder-gear 13. What we particularly wish to emphasize in this connection is that the sheet-stop fingers 2 and the parts assd cinted with them are mounted upon the reciprocating tape-carriage and moved therewith, and therefore are moving forward with the carriage at the time they function to justify the oncoming sheet.

For actuating the rock-shaft 5 we provide it, as herein shown, at its left hand end with a tripping-head 1i carrying two

plungers

15 and 16 having their projecting lower ends oppositely beveled for co-action with tripping-blocks i7 and IShaving inclined upper "faces 19 and mounted in brackets 20 and 21 secured to the press-frame 22 at suflicient distances apart to provide for the co-action of the plungers l5 and 16 with the trippingblocks 17 and 18 at the proper times. The

plungers

15 and 16 are formed, as shown in Fig. 6, with outwardly projecting stop flanges 23 engaging with the upper ed e of the front plate 2% of the tripping-hen 14. The upper ends of the plungers are formed with sockets 25 receiving the lower ends of helical springs 26 the upper ends of which encircle guide-pins 2? riveted in the to plate 28 of the tripping-head, the said springs exerting a constant effort to force the plungers downward.

As shown, the rock-shaft 5 is furnished with a depending arm 29 to which is attached the rear end of a long link 30 the forward end of which is attached to an arm 31 depending from a rock-shaft 32 the ends of which are journaled in brackets 33 secured to the forward ends of the side pieces 7 of the reciprocating tape-carriage. The said rock-shaft 33 is provided with a series of heads 34 to the lower faces of which are secured long sheet-holders 35 the forward I ends of which are upturned as at 36 for pinching the outer edges of the partly delivered sheets as will be hereinafter described. Under this construction the

rockshafts

5 and 32 rock in concert.

The under faces of the side pieces 7 of the tape-carriage are formed with rack-teeth 37 meshing into gear wheels 38 located near the opposite ends of a shaft 39 mounted in the press-frame 22 and driven as'required to reciprocate the tape-carriage so as to, slow it down and speed it up at'the ends of its stroke for reversal. Mechanism for this purpose is shown, for instance, in United States Patent No. 986,172 granted March 7, 1911, on the application of W. S. Huson. The said patent also shows a multi-stage delivery mechanism in which the tapes are intermittently actuated and extended and doubled under by the strokes of the carriage itself.

As herein shown, the tapes 8 pass over a tape-roll 40 having trunnions 41 journaled in brackets 42 fastened to the press-frame 22. At its left hand end the roll 40 is provided with a ratchet-wheel 43 engaged by a pawl 44 which prevents the reverse rotation of the roll. The said tapes 8 also pass over a roll 45 journaled at its ends in the pressframe 22, the rolls 40 and 45v being there-- fore fixed except as to rotation. The tapes also pass over a tape-roll 46 journaled at its ends in the rear ends of the side pieces 7 of the carriage and provided at its left hand end with a ratchet 47 co-acting with a pawl 48 which holds the roll against forward rotation. The tapes also pass over a series of pulleys 49 mounted in brackets 50 adjustably mounted upon a cross-piece 51 connecting the forward ends of the side pieces 7 of the tape-carriage. The tape-roll 46 and the tape-pulleys 49 in addition to rotary movement, travel back and forth with the carriage and are therefore traveling rolls as compared with the

rolls

40 and 45 which are fixed. Under this construction and arrangement, the tapes 8 are intermittently actu ated by having their upper reaches drawn outward during the outstroke of the carriage and virtually doubled in length, while during the instroke of the carriage, the outer portlons of the upper reaches of the tapes the art as extensible tapes.

In case the plunger 16 should, for any reason, fail to function, we provide the tripping-head 14 upon its forward edge with a safety r0ller'52 arranged to engage with the inclined forward face 53 of the bracket 20 (Fig. 1), and so insure the rocking of the head 14 into the position in which it is shown by Figs. 1 and 5 at the end of the instroke of the tape-carriage.

Having now described our improved delivery mechanism, we will proceed to set forth its mode of operation. It may be as sumed that the sheet 10 has already passed through the first stage of its delivery, at which time its rear edge will be located 111 front of the sheet-stop fingers 2. Now just before the on-coming sheet 9", moving at a uniform rate of speed corresponding to that of the impression-cy1inder12, reaches the tapes 8, the tape-carriage starts upon its outward stroke at a gradually increasing speed with a corresponding actuation of the upper reaches of the tapes which have identically the same rate of longitudinal movement as has the carriage in its outstroke. Almost immediately after the carriage starts on its outstroke, the lower end of the plunger 15 engages the inner end of the trippingblock 17, causing the shaft 5 to be rocked from rear to front, whereby the downwardly turned forward ends of the sheet stop fingers 2 are moved into the path of the sheet 9, the fingers at the same time moving forward with the tape-carriage the speed of which is at this time slower than the surface speed of the impression cylinder. As the on-coming sheet is traveling at a greater speed than the speed of the carriage, and hence of the fingers 2, it will overtake the latter and strike their downwardly turned forward ends, whereby the sheet will be slowed down to the slower speed of the carriage and tapes, and justified, not by fixed means but by means which are traveling with the tape-carriage at the speed thereof, for which reason the justification of the sheet is accompanied by the minimum tendency to buckle or displace it. From this it follows that the sheets will be stopped at the same point and hence will deliver in perfeet registration. As the tape-carriage a proaches the limit of its out-stroke, the beveled lower end of the plunger 16 rides over the beveled upper face of the tripping-block 18 and snaps over the front edge thereof.

When the shaft 5 was rocked, as de-.

scribed, to bring the fingers 2 into play, the shaft 32 was simultaneously rocked to cause the ends 36 of the sheet-holders 35 to pinch the forward end of the sheet 10 between them and those portions of the tapes passing over the flanged tape-pulleys 49, whereby the sheet 10 was carried outward through the'secondstage of its delivery and into the position shown in Fig. 1, the sheet 9 meanwhile having taken its place upon the inner portions of the upper reaches of the tapes as also shown in Fig. 4. At the beginning of the in-stroke of the carriage, the plunger 16 engages with the front edge of the tripping-block 18 and trips the head 14 so as to rock the shaft 5 and hence the shaft 32 rearward, whereby the fingers 2 and holders 35 are lifted into their clearance positions as shown in Fig. 3. During the in-stroke of the carriage, the outer portions of the upper reaches of the tapes are virtually folded under the inner portions of the upper reaches of the tapes, so as to drop the sheet 10, the inner portions of the 'upper reaches of the tapes being at a standstill at this time. As the tape-carriage approaches the limit of its instroke, the beveled lower end of. the plunger 15 rides over the beveled face 19 of the tripping-block 17 and snaps into the position in which it is shown in Fig. 5 which is its position of readiness to being another cycle.

In the modified application of our invention, shownfby Figs. 7 and 8 of the drawings, a lower set of tapes 54 and an upper set 'oftapes 55 both constantly driven by suitable means at a speed corresponding to the surface speed of the impression cylinder 12, are interposed between the same and the reciprocating tape-carriage with its inter-- mittently actuated variable speed tapes 8 already described. The lower, set of tapes 54 'run'over tape-rolls 56 and 57 journaled in the press-frame 22, while the upper set of tapes. 55run over tape-

rolls

58 and 59 journaled in a pivotal frame 60'swinging upon studs'61 in the frame 22, whereby the frame 60 is adapted to be lifted into the clearance position in which it is shown by broken lines in Fig. 7. For this purpose, we provide a handle 62 mounted upon the right hand end of a shaft 63 journaled in the frame 60. The handle 62, is provided at its inner end with an arm 64: connected by a link 65 to the press-frame 22. The oppositeend of the rock-shaft 63 is provided with an arm 6.6 connected by a link 67 to the press-frame 22. When the frame 60 has been lifted to the limit of its clearance or elevated position, as shown in Fig. 7, the

handle 62 engages with a stop-lug 68 on the said frame. engaged with the lug 68 as described, the joint 69 between the arm 64 and the link 65, and the joint 70 between the arm 66 and the link 67, have passed a center line extending between the shaft 63 and the studs 71 which connect the links 65 and 67 to the pressframe 22. Under this construction and arrangement ofparts, the weight of the frame 55 tends to force the handle 62 against the lug 68, whereby the frame is held in its elevated position from which it cannot be disturbed except as the handle 62 is swung in the opposite direction so as to carry the pivot points 69 and 7 O by the center line described, after which gravity will act to lower the frame which will be restrained in being lowered, by .the handle 62.

We claim 1. In a multi-stage delivery mechanism .for printing presses, the combination with a reciprocating tape-carriage mounting intermittently actuated extensible tapes, of

with the on-coming sheet preparatory to the advancement of the said sheet to its next position on the said tapes.

2. In a m'ulti-stage delivery mechanism for printing presses, the combination with a reciprocating tape-carriage mounting intermittently actuated extensible tapes, of sheet-justifying means mounted upon the said carriage at the inner end thereofand arranged to co-act with the on-coming sheet to retard and justify the same preparatory to the advancement of the said sheet to its next position on the said tapes.

3. In a multi-stage delivery mechanism for printing presses, the combination with .a reciprocating tape-carriage, of tapes actuated by the said carriage on the out-stroke thereof,- and sheet-justifying means mounted upon the said carriage and movable between the tapes so as to act in the plane of the oncoming sheet to retard and justify the same preparatory to the advancement of the said sheet to its next position onthe said, tapecarria ge.

.4. In a multi-stage delivery mechanism for printing presses, the combination with a reciprocating tape-carriage, of extensible tapes therefor intermittently actuated by the movement thereof, and rocking sheetstop fingers carried by: the said carriage'and adapted to be moved downward between the said tapes into the path of the on-coming sheet preparatory to the advancement of the said sheet to its next position on the said tapes and the said fingers being lifted above the said tapes during-the return movement of the carriage.

5.111 a 'multi-stage delivery mechanism for printing presses, the combination with When the handle 62 has been stop fingers mounted upon the said shaft and adapted to be rocked downward between the tapes into the path of the oncoming sheet preparatory to the advancement of the said sheet to its nextposition on the said tapes and the said fingers being rocked upward above the said tapes to clear the sheet on the return movement of the said carriage.

6.. In a multi-stage delivery mechanism for printing presses, the combination with a reciprocating tape-carriage, of extensible tapes therefor, and oscillating sheet-stop fingers carried by the said carriage and adapted at their'forwardends to pass downward between the tapes into the path of the on-coming sheet for being engaged by the forward edge thereof preparatory to the ad vancement of the said sheet to its next position on the said tapes.

7. In a multi-stage delivery mechanism for printing presses, the combination with a reciprocating tape-carriage mounting intermittently actuated extensible tapes, of a rock-shaft mounted upon the said carriage, sheet-justifying means mounted upon said shaft and co-acting with the on-coming sheet while moving. outward with the said carriage preparatory to the advancement of the,

said sheet to its next position on the said tapes for rocking the said shaft.

8. In a multi-stage delivery mechanism for printing presses, the. combination vwith a reciprocating tape-carriage mounting intermittently actuated extensible tapes, of a rock-shaft mounted upon the said carriage, sheet-justifying means mounted upon the said rock-shaft, a tripping-head mounted upon the shaft, and means engaging with the said tripping-head, whereby the shaft is rocked when the carriage begins its outward excursion to justify the said sheet preparatory to the advancement of the said sheet to its next position on the said tapes and when it begins its inward excursion to clear the justified sheet.

9. In a multi-stage delivery mechanism for printing presses, the combination with a reciprocating tape-carriage, of a rockshaft carried thereby, sheet-justifying means mounted upon the said rock-shaft, a tripping-head also mounted upon the rockshaft and provided with two trippingplungers, and stationary tripping means located in position to co-act with the said plungers at the beginning of the outward movement of the carriage and at the beginning of the inward movement of the carriage.

10. In a multi-stage delivery mechanism for printing presses, the combination with a reciprocating tape-carriage, of a rockshaft mounted thereupon, sheet-justifying means mounted'upon the said shaft, means for rocking theshaft at the beginning of the outward excursion of the carriage and at the inward excursion of the carriage, and safety means for insuring the position of the shaft cated at the front end of the carriage, and

means for causing the simultaneous operation of the said sheet-stop and sheet-holding means.

12. In a multi-stage delivery mechanism for printing presses, the combination with a reciprocating tape-carriage, of a rockshaft located at the inner end thereof, sheetstopping means mounted upon the said rockshaft, a rock-shaft located at the forward end of the said carriage, sheet-holding means mounted upon the said rock-shaft, means connecting the said shafts for their concurrent operation, and means for rocking the said shafts at the beginning of the outward excursion of the carriage and at the beginning of the inward excursion thereof.

13. In a-multi-stage delivery mechanism for printing presses, the combination with a variable speed reciprocating tape-carriage, of extensible tapes carried by the said carriage and participating in the variable movement thereof, and sheet justifying means carried by the carriage and co-acting with the on-coming sheet as the same rides upon the tapes to justify and hold the sheet during the stages of its delivery.

14. In a multi-stage delivery mechanism for printing presses, the combination with an impression cylinder driven at a uniform surface speed, of a reciprocating tape-carriage traveling at a variable speed, and an upper and a lower set of tapes interposed between the said cylinder and tape-carriage for conveying the printed sheets from the cylinder to the carriage, the upper set of tapes being) mounted in a pivotal frame adapted to e tapes in a direction away from the impression cylinder.

15. In a multi-stage delivery mechanism for printing presses, the 'combination with an impression-cylinder, of a sheet-,delivery.

an upper and a lower set oftapes interposed looking it in. thatpoa sition.

lifted clear of the lower set of from the said impression cylin- 16. In a multi-stage delivery mechanism tomatically locking it in its raised position.

17. In a multi-stage delivery mechanism for printing presses, the combination with an impression-cylinder, of a sheet-delivery,

an upper and a lower set of tapes interposed between the said cylinder and sheetdelivery for conveying the printed sheets from the cylinder to the delivery, the upper set of tapes, the upper set of tapes being frame adapted to be lifted clear of the lower set of tapes the upper set of tapes being driven by the driving means for the lower set of tapes when the upper set of tapes is coacting with the printed sheet, and means for raising the said pivotal frame in a direction away from the said cylinder and automatically looking it in its raised position.

WINFIELD s. HUSON. CHRISTEN R. KADDELAND.