US586903A - Folding mechanism for printing-presses - Google Patents

Description

(No Model.) 2 SheetsSheet 1.

W. H. JESSUP.

FOLDING MECHANISM FOR PRINTING PRESSES. N0. 586,90 3.

Patented July 20, 1897 E .dttorne w m u S R s 1 lill l 0 e w Mi w I w N Q if WITNESSS m: NORRIS PETERS cu. PHOTO-LUNG" WASHINGTDN, n. c

(No Model.)

2 Sheets-Sheet 2. v W. H. JESSUP. I FOLDING MECHANISM FOR PRINTING PRESSES.

No. 586,903. Patented July 20, 1897 WITNESSES INVENTOR .dttorney U ITED STATES PATENT ries.

\VILLIAM HENRY JESSUP, OF POUGHKEEPSIE, DIEIV YORK.

FOLDING MECHANISM FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 586,903, dated July 20, 1897. Application filed February 27, 1896. Renewed March 2'7, 1897. Serial No. 629,576. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM HENRY J ES- SUP, a citizen of the United States, and a resident of Poughkeepsie, in the county of Dutchess and State of New York, have invented certain new and useful Improvements in Folding Mechanism for Printing-Presses; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a representation of a section on line 00 as, Fig. 2, with deliveryframe shown down in dotted lines. Fig. 2 is a plan view of press. Fig. 3 is a detail view to show adj ustability of rollers F F.

Fig. 4c is a section through delivery-frame,

showing belts P and means of operation. Fig. 5 is a plan view of the receiving end portion of the bridge conveyer or delivery and the sheet-centering devicesthereon. Fig. 6 is a sectional view of one of end bearings of roller B. Fig. 7 is a detail view showing more clearly the arrangement of one of the adjustingscrews N.

This invention has relation to certain new and useful improvements in the sheet conveyer or delivery mechanism used in connection with printing-presses and folders for taking the printed sheet from the press and de livering it to the folder.

The invention is more particularly designed for use in connection with What is known to the trade as the Kendall folder, and has for its object the provision of means for preventing the sheet as it leaves the tapes of the bridge conveyer which connects the folder proper with the press from curling or turning upwardly, according to its tendency, especially when the machine is so situated that it is subject to a draft or current of air.

A further objectof the invention is to provide an improved construction of the frame of the conveyer or delivery whereby when the folder is not in use it may be dropped down against the folder-frame without straining the tapes.

Other objects will hereinafter appear.

WVith these objects in view the invention consists in the novel construction and combinat-ion of parts, all as hereinafter described, and pointed out in the appended claims.

In the accompanying drawings I have shown only the upper portion of the folderframe and mechanism which is necessary to the understanding of the invention.

In the drawings the letter A designates the folder-frame, and B B the rolls, which carry the usual series of tapes O, which receive the sheet from the delivery or bridge conveyer. Said rolls are journaled one at the front and one at the rear portion of the said frame in adjustable bearings in the usual manner, or it may be in the special bearings hereinafter described. Immediately above the front roll B, I journal a second and similar roll B from which I extend a series of endless tapes B to the forward roll D,which carries the upper tapes E of the bridge conveyer or delivery. Inorder to hold said tapes B down in proper relation to the lower tapes 0, I provide two idle-rolls F F, one at the front and one at the back, which depress said tapes in the manner shown clearlyin Fig. l. Said rolls are carried by vertically-adj ustable brackets f, secured to-bars A of the frame. By the adjustment of these brackets the action of said rolls upon the tapes may be accurately regulated. I have found that as the sheet leaves the upper and lower tapes E E of the conveyer or delivery and passes between the tapes 0 B it has a tendency to curl backwardly against the roll D, notwithstanding the tapes B, which are some distance apart, and to prevent this I extend from the rearmost idle-roll F to the roll D a series of short tapes H, which are disposed intermediately with relation to both the tapes E and B These short tapes effectually prevent the above-described tendency of the sheet, and they also enable me to employ a much less number of the tapes E and B I designates the two rolls between which the sheet passes downward to the vertical tapes I in making the first fold, and J is the usual blade. The upper tapes B effectually prevent all tendency of the paper to turn or curl upwardly in passing to these rolls 1.

I will now proceed to describe the second feature of the invention, which relates to the construetionof the bridge conveyer or delivery frame.

K designates the frame upon the cross-bar 7. on which are carried the usual series of brackets K, in which are the pulleys K around which and the roll B the lower series of tapes E pass, said frame being hinged or pivoted upon the end portions of the shaft of roll B. The free or receiving end of this frame when in use is suitably supported upon the frame of the press. (Not shown.)

L designates two rearwardly projecting arms which pivot on the shaft of roll D, one at each side of the machine. In these arms L is journalcd the roll M, around which and the said roll D the upper tapes E pass. Each of said arms has in its under side an adjust-- able screw N, which rests upon the upper face of the bar 7; of the frame K, and thereby supports said frame L in proper relation to the frame K. By this arrangement it will be seen that both of the said frames may be dropped down against the folder-frame when not in use without, as indicated in Fig. 1, the necessity for removing the roll M and without any danger of straining the tapes. The bearings for said roll M are made adjustable at min order that the tension of the tapes may be properly regulated.

In Figs. 4. and 5 I have shown an additional feature which it is sometimes desirable to employ in connection with the mechanism above described for the purpose of properly guiding or centering the sheet. This feature consists in providing at each side of the series of tapes E an endless edgewise-disposed belt I, which is in position to guide the edge of the sheet as it passes between the tapes E E. These belts are carried by pulleys I on shortvertical shafts P which are journaled in arms R, which are adjustably secured in the frame L. On each of the shafts P which are nearestthe roll M, is a bevel gear-wheel S, which meshes with and is driven by a corresponding wheel S on the shaft of said roll. The gears S are preferably sleeved on the shaft of the roll M and held thereto by setscrews 5 in order that they may be adjusted to correspond to the adjustment of the arms R, which is made to adapt the belts to sheets of different widths.

Considerable trouble has been experienced in this class of machines with regard to securing the proper tension of the tapes, which are liable to changes in length resulting from changes in the condition of the atmosphere. I have therefore devised means in the nature of an automatic compensator which is designed to overcome this objection.

Referring more particularly to Fig. of the drawings, the letter T designates a bracketarm which is designed to be adjustably bolted to the framework, as indicated in Fig. 1. This bracket has therein a guideway t, in which is movably seated a boxing T, in the outer end portion of which is a bearing (such as indicated at i) for the tape-carrying roller. \Vithin the guideway of the bracket is a spring or springs T Preferably two of these springs are employed, their inner ends being seated against the inner wall of the guideway and their outer ends against the inner end of the boxing. The boxing is preferably provided with guide-rods T around which the springs are coiled. One of the rollers of the pair carrying each series of tapes (the nondriving roller) is journaled in these boxes.

The action of the springs upon the boxes T keepsv the tapes properlystretched when they would otherwise be slack, while at the same time they will readily yield to shrinkage of the tapes.

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

1. In mechanism of the class described, the combination with the rolls B, B, and D and with the tapes 0 carried by said rolls B and B of the roll B journaled above the roll B, the series of endless tapes turning from said roll to the roll D, the vertieally-adjustable idle-rolls F, F, and the series of short tapes running from the rear idle-roll F to the said roll D, substantially as specified.

2. In mechanism of the class described, the combination of the folder having the rolls B, B, the endless tapes 0 carried by said rolls, the roll D above roll B, the roll B above roll B, the series of tapes B connecting the rolls B and D, the vertically-adj ustable idlers F, F, which depress the tapes B and the series of short tapes running from the idler F to the said roll D, together with the delivery or conveyer frame having the series of pulleys K? and the roll M above said pulleys, the lower tapes E running from said pulleys to the roll 3, and the upper tapes E running from the roll )I to the roll D, substantially as specified.

3. In mechanism of the class described the combination with the folder-frame having the rolls B and D journaled one above the other atthe rear upper portion thereof, of the frame K hinged or pivoted to the folder at points concentric with the axis of roll B, the series of pulleys carried bysaid frame, the tapes E running from said pulleys to the roll B, the arms L pivoted to the folder at points concentric with the axis of the roll D, means for adjustably supporting the frame L upon the frame K, the roller M pivoted in the arm L, and a series of tapes E running from the roll M to the roll 1), substantially as specified.

t. In mechanism of the class described, the combination with the rolls B, B and D, with the tapes O carried by said rolls B and B, of the roll B journaled above the roll B, the series of endless tapes running from said roll B to the roll D, the vertically-adjustable idlerolls F F and the series of short tapes running from the rear idle-roll F to the said roll D, together with means for automatically regulating the tension of the tapes, substantially as specified.

5. In mechanism of the class described, the combination of the folder having the rolls B B, the endless tapes 0 carried by the said rolls, the roll D above the roll 13, the roll B above the roll B, the endless tapes ]3 carried by the said roll 13 and D, the idlers F F L connected to the folder-frame adjacent to the roll D, the frame K connected to the said folder-frame adjacent to the roll B, a tapecarrying roller or pulley carried by the rear portion of each of the said frames K and L, the two series of tapes E E carried by the said rolls B and D, and the respective rolls or pulleys of the said frames, the edgewisedisposed edge-guiding belts P, one at each side of the series of tapes E E, the laterallyadjustable carrying-pulleys for said belts, and adjustable gear for driving the said pulleys, substantially as specified.

In testimony whereof I affix my signature in presence of two Witnesses.

- WILLIAM HENRY JESSUP.

Witnesses:

EDMUND P. PLATT, CHARLES T. BARTLETT.

Images