US588694A - dexter - Google Patents

Description

3 Sheets-Sheet 1.

(No Model Patented Aug. 24,1897.

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(No. Model.) 3 Sheets-Sheet 2.

T. O. DEXTER. HEADER-UP DEVICE FOR PAPER FOLDING MACHINES.

No. 588,694. Patented Aug. 24,1897.

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T. O. DEXTER.

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HEADER-UP DEVICE FOR PAPER FOLDING MACHINES.

Patented Aug 24,1897.

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min) v INVENTOR UNITED STATES PATENT QFFICE.

TALBOT O. DEXTER, OF PEARL RIVER, NEW YORK, ASSIGNOR TO THE DEXTER FOLDER COMPANY, OF NEW YORK, N. Y.

HEADER-UP DEVICE FOR I APER-FYOLDING MACHINES.

SPECIFICATION forming part of Letters Patent N 0 588,694, dated August 24, 1897.

Application filed April 17, 1897. Serial No. 632,630. (No model.)

- purpose of insuring the creasing or folding of said sheets or signatures uniformly.

In the operation of double-sixteen foldingmachines the sheet is fed into the folder double, or what is known as tWo siXteenpage signatures. Sometimes these sixteenpage signatures are folded and delivered as single sixteens, whereas in other cases one sixteen-page signature is inserted within the other to make a signature of thirty-two pages. In either case thetwice-folded sheets or sig natures are passed into position above the third-fold folding-rollers one above the other" and headed up or registered just before the folding-knife descends for creasing them into the bight of the folding-rollers; It is customary to provide a header-up device which registers bothof said twice folded sheets or signatures to a common line by pushing both sheets precisely the same distance. Such a header-up is not entirely satisfactory, because by reason of the varying peculiarities of various kinds of paperand of the fact that the folding-blade only comes in contact with the upper sheet when inserting and causes the under sheet to be forced down by the engage: ment of the crease of the top sheet with it there are frequently marked irregularities between the fold of the bottom sheet and the fold of the upper sheet. This'irregularity is also partly due to the fact that the foldingknife usually works in the arc of a circle and strikes the'upper "and lower signatures in slightly-difierent lines;

blades or gages which-can be adjustedto With my improved header-up device I propose to provide two relatively and independently adjustable registering or heading-up proper position to independently register two sheets or signatures supported in parallel planes above the folding-rolls for insuring the uniform creasing and folding of them. For operating the improved header-up device I provide a cam which is adapted togive a single movement to the header-up for each revolution to simultaneously register the two signatures one above the other when it is desired to insert one within the other or a double movement each revolution when it is desired to separately fold the signatures and deliver single sixteen-page signatures.

In order that my invention may be fully understood, I will first describe the same with reference to the accompanying drawings, and afterward point out, the novelty with more particularity in the annexed claims.

In said drawings, Figure 1 is a plan View of part of a folding-machine having my improved header-up attachment applied thereto.

Fig. 2 is a detail sectional elevation taken on the line 2 2, Fig. 1-. V Fig. 3 is a similar view showing the parts in a different position. Fig. 4: is a detail sectional View of the header-up attachment, and Fig. 5 is a perspective view ofthe same.

l and 2 are the first-fold rolls of a foldingmachine.

3 and 4 indicate one pair of the second-fold rolls, (the second pair being omitted,) and 5 are the tapes for conveying the sheets from the first-fold rolls into position above the two pairs of second-fold rolls.

6 and 7 indicate one pair of third-fold rolls, and 8 is a metal plate supported above the rolls 6 7 and formed with a central slot 9 for the folding-knife 10 to operate in. The folding-knife 10 is indicated in dotted lines, it being mounted upon an oscillatory shaft 11, which is operated in any suitable manner.

15 and 16 are two sets of tapes passing from two pairs of second-fold rolls 3 4t to pulleys 1'7 and 18, respectively. The sets of belts 15 and 16 pass, respectively, above and below the metal plate 8 and are adapted to convey the twice-folded sheets or signatures from the rolls 3 4 above and below said plate and support them in position to be folded between the third-fold rolls by the action of the folding-knife. It will of course be obvious that the signatures from the nearest second-- fold rolls 3 4 will reach registered position above the third-fold rolls before the signatures from the other third-fold rolls, and when the machine is operating to deliver single sixteen-sheet signatures said signatures are passed through the third-fold rolls as soon as they reach registered position; but when it is desired to insert and produce signatures of thirty-two pages it is necessary to wait un-' til both signatures are in position above the third-fold rolls before imparting to them the final crease and folding one within the other.

For independently registering the two signatures, whether separately or simultaneously, I provide a double header-up attachment, which I will 110w describe.

20 is a suitable slotted guide-plate secured to the frame of the machine at one side of the path of the tapes and 16.

21 is a plate sliding upon the slotted plate and formed with a block 23, which works in the slot 20 of plate 20.

24 is a plate secured to sliding plate 21, and 25 is an upwardly-bent end of plate 24, formed with a slot 26, through which the adj usting-screw 27 freely passes.

28 is a slotted plate resting upon the plate 21 below the plate 24, formed with a threaded opening in which the screw 27 engages.

30 is a sheet-registering blade or gage supported from the arm 31, depending from the slotted plate 28.

32 is a sheet-registering blade supported from the plate 24. The blade or gage 3O rests beneath the metal plate 8 for registering the lower signature, whereas the blade 32 rests above the plate 8 for registering the upper signature.

For imparting a short reciprocatory motion to the registering blades or gages Iprovide a rock-lever 40, which pivotally engages a pin 41 at its upper end and is provided with an antifriction-roller 42 at its lower end, working constantly upon the cam 43. The cam 43 is formed with two depressions 44 for giving the rock-lever two strokes in each revolution of the cam-shaft when the machine is producing double-sixteensheet signatures.

45 is a segment-plate journaled on the camshaft 46 and formed with a slot 47, in which works a screw 48, projecting from the face of the cam 43. When it is desired to impart but one rocking motion to the lever 40 in each revolution of the cam shaft, the segm entplate 45 is moved into position shown in Fig. 3 for covering up one of the depressions 44 of the cam. In Fig. 2 the cam is shown with both depressions 44 operating.

The pin 41 projects from the block 50,which is journaled upon the end of the rod 51 and adj ustably held upon said rod by means of screw-nuts 52. The rod 51 is pivoted between lugs 54, projecting up from the plate 21.

By reason of the adjustment of screw-nuts 52 on rod 51 the header-up blade 32, carried by plate 24, can be adjusted to move the upper sheet or signature to any desired position.

The ad j ustingscrew 27 makes it possible to adjust the header-up blade 30 to any desired position with relation to blade 30 or the folding-knife for registering the lower sheet or signature.

is a spring-pressed rod holding rocklever 40 in working engagement with cam 40.

are calendering-rolls through which the folded signatures pass on their way to the packing-boxes.

In Figs. 2, and 3 I have represented the upper signature as and lower signature 2 by full lines and held in position above and below plate 8 by the tapes l5 and 16, respectively, indicated in section. The signatures are headed up or registered in Fig. 2, and are uneven and out of register in Fig. 3.

Having, thus described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. A double header-up attachment for folding-machines comprising two relatively-ad justable registering blades or gages mounted upon a common support and adapted to independently register two signatures or sheets either separately or simultaneously prior to being folded, substantially as set forth.

2. A double header-up attachment'forfolding-machines comprising two relatively-at justable registering or heading-up blades or gages mounted upon a common movable support, and means for operating said movable support, whereby two sheets or signatures can be independently registered, either separately or simultaneously,prior to being folded, substantially as set forth.

3. The combination, in a foldingmachine, with folding-rolls, a folding-knife, and means for feeding two sheets or partly-folded signatures into position above the folding-rolls, of a reciprocating double header-up device having two adjustable registering or heading-up blades adapted to independently register the two sheets or signatures, and means for operating the header-up device, substantially as and for the purpose set forth.

4. The combination, in a f0lding-machine with the first-fold rollers, the two pairs of second-fold rollers, the third-fold rollers, the tapes for conveying two twice-folded sheets from the second fold rollers into position above the third-fold rollers, the third-fold knife, and the header-up attachment provided with two relatively-adj ustable registering-blades adapted to head up or register said signatures independently, substantially as set forth.

5. A header-up attachment for folding-machines comprising an intermittently-reciproeating adjustable plate carrying a sheet-registering blade, and a second plate adjustably mounted upon and moving with the first plate and carryinga second sheet-registering blade, as set forth.

6. The combination, in a folding-machine, with the folding rollers, and the foldingknife, of the sliding header-up device, comprising a plate carrying a sheet-registering blade, a second plate adjustably mounted on the first plate and carrying a second sheetregistering blade, an operating-lever, and an adjustable connection between the operatinglever and the firstsliding plate, substantially as set forth.

7. The combination, in a folding-machine, with the folding-rollers, the plate above the folding-rollers, the tapes running above and below said plate for feeding two sheets or partly-folded signatures into position in parallel planes above the folding-rollers, above and below said plate, and the folding-knife, of the header-up attachment having two adj ustable registering-blades supported respectively above and below said plate for independently registering or heading up the sheets or signatures above and below the plate, substantially as set forth.

TALBOT C. DEXTER. Witnesses:

HARRY E. KNIGHT, WILLIA E. KNIGHT.

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