US1504914A - Automatic sheet-feeding device - Google Patents

Automatic sheet-feeding device Download PDF

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Publication number
US1504914A
US1504914A US338835A US33883519A US1504914A US 1504914 A US1504914 A US 1504914A US 338835 A US338835 A US 338835A US 33883519 A US33883519 A US 33883519A US 1504914 A US1504914 A US 1504914A
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Prior art keywords
sheets
rollers
sheet
pile
shaft
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US338835A
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John H Stonemetz
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BABCOCK PRINTING PRESS MANUFACTURING Co
BABCOCK PRINTING PRESS Manufacturing COM
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BABCOCK PRINTING PRESS Manufacturing COM
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Priority to US338835A priority Critical patent/US1504914A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/02Separating articles from piles using friction forces between articles and separator
    • B65H3/06Rollers or like rotary separators
    • B65H3/0623Rollers or like rotary separators acting at least during a part of each separation cycle on the articles in a direction opposite to the final separating direction

Definitions

  • My invention relates to automaticmeans for taking sheets of paper or other stock singly from a pile or stack and feeding them to a machine. Although not limited to such use, my invention is particularly useful for automatically feeding sheets singly to a printing press.
  • One of the principal objects of my inven' tion is to provide a sheet. feeding device which will be simple in construction, easy to operate, and which will unfailingly take the sheets singly from a pile and feed them to the printing press or other machine.
  • One of the advantages of the present device is that it will operate effectively on light or heavy stock. Another advantage is that the whole or a substantial part ofthe pile need not be combed out or extended or disturbed, as the device causes no alterationing sheets to remain stacked in a perpendicu lar pile with. their edges even. In most of the automatic feeding devices heretofore used the sheets are combed out so that a number of sheets at the top of the pile extend some distance beyond the pile or stack and the accurate separation of individual sheets depends upon the tendency of the upper sheets of the pile to slip upon each other when rubbed or combed, and this at best is not a very reliable method of placing the sheets in condition for separation.
  • the present device does ⁇ not depend upon this well known combing action, and it is more reliable and uniform in its operation.
  • the former devices referred to the topmost sheet had to be entirely moved before the sheet next below it could be held, where as, in the present case the sheets may be held at practically all times if desired.
  • Another object of my invention is to provide a feeding device which'will take the sheets singly from the pile and feed them to a machine or printing press with the same decided advantage.
  • the feeding device may be set to turn or reverse the sheets as they are fed. No matter how the sheets appear in the pile nor which side is to be printed the device may be set to feed either way to the press without inverting the pile. In some cases it may be desirable to remove slip sheets from the pile while other sheets are being fed to the press and in such cases the direct feed may be used to feed the sheets to the press and the reversing device may be used for removing each alternate or slip sheet and for delivering it separately instead of to the press.
  • Another advantage of the present device is that it may be embodied in the press structure or it may be embodied in an independent structure, the mechanism being adapted for either construction.
  • Another advantage is that the device may be readily thrown out of operation to permit the sheets to be hand fed from the ordiplication,
  • Figure 1 is an elevation of the feeding end of a printing press to which my inven tion has been applied, the feeding device be ing shown partially diagrammatically, and showing the latter arranged to feed direct or without turning the sheets,
  • Figure 2 is a similar view showing the feeding device arranged to reverse or turn the sheets as they are fed singly,
  • Figure 3 is a similar view, partially diagrammatic, showing the reversing device thrown out of operation and the direct feed in operation.
  • Figure 4 is a side elevation of part of the feeding device, showing the cams for operating the same,
  • Figure s a side elevation 5 means for howing the Figure 9 is a side elevation of part of the frame and the support for raising the reverse feeding rollers,
  • Figure 10 is a similar view showing the parts in lowered position
  • Figure 11 is a plan view of the reverse feeding device
  • Figure 12 is an elevation of the combined direct and turning feeding devices.
  • framesor standards 10 attached to or formed integral with the press frame 41 as a support for the feeding mechanism though the latter may be arranged on a structure which may be moved about separate from the press if desired.
  • brackets 68 extending upwardly from the frame, in which the shaft 3 is journaled:
  • This shaft 3 is operated in any suitable manner, preferably from the main shaft of the printing press or other machine to which the feeding device is ap plied; and from this shaft 3 all the mechanism of the feeder is operated.
  • Many of the parts of the feeding device are duplicated at opposite sides of the press and where the parts are duplicated they have corresponding. reference numerals.
  • cams 2 fixed to the shaft 3 to revolve therewith and there are other cams 1 which are loose on I.
  • the levers 17 have rollers 70 on one of their arms which engage the peripheries of the cams 1 so that these levers are also periodically rocked but at a different time to the rocking of the levers
  • the forward arms of the levers 16 carry a shaft 11 on which the sheet buckling members are mounted. These sheet buckling members and the feeding members may all be made the same so that a description of one will answer for all.
  • These sheet buckling members are arranged to turn with the shaft 11 and there are preferably two or more of them spaced apart on this shaft to engage different portions of the width of the sheets.
  • the forward arms of the levers 17 carry a cross shaft 12 on which are fixed the feeding members 14 which are preferably made like. the members 13.
  • These buckling and sheet feeding members are revolved by means of a driving device to be hereinafter described.
  • the pile 25 of sheets to be fed is placed upon the table 42 carried by brackets 43 which are preferably elevated step by step automatically by any of the known devices adapted for the purpose.
  • a sheet holder or presser foot 18 supported upon the arms 19 and placed to the left of the members 13 in figure 4-. It may be here stated that the present description refers to the device for feeding the sheets without turning them.
  • the presser foot 18 is adjustable along the arms 19 toward or from the buckling members 13. If it is desired to raise and lower the presser foot the arm 19 is mounted upon a shaft 109, which is placed in the boss which receives the shaft 7 or the boss which receives the shaft 7*.
  • the shaft 109 When the reverse feeding device is operating, the shaft 109 may replace shaft 7, whereas, when the direct feeding device is in operation, the shaft 109 may replace shaft 7.
  • the arm 110 on the shaft 109 has a roller engaging the cam 111 on the shaft 3 and the cam serves to rock shaft 109 to raise the presser foot 18 off the pile while the top sheet is being withdrawn or fed out.
  • arms 29 pivoted at 7 3 and their forward ends are preferably chamfered and rest upon the forward end of the hand feed table 28 near the paper gauge 38 and near the impression cylinder. These arms are adapted to swing upon the shaft 73 in order to carry the parts of the feeder out of the way to make parts of the press accessible for repairs or adjustment and also to throw the automatic feeding device out of the way when it is desired to use the feeder table 28, and to feed the sheets by hand.
  • the arms 29 When the arms 29 are down or in operative position they incline downwardly fromthe level of the top of the pile to the point at which the sheets are fed to the press.
  • Endless tape belts 31 engage over the rollers 36, 37; and their lower runs engage the upper surface of the sheet which is being carried upon the upper runs of the tapes 22 and they prevent the sheet from flying off the latter and assist in carrying it to the press.
  • rocker shaft 23 which carries a number of fingers 24 which reach over the shaft 73 and the thin ends of these fingers rest on the top of the pile of sheets near one edge thereof.
  • the shaft 3 revolves continuously in the direction indicated by the arrow as long as the feeding device is in operation.
  • the cams 2 and 1 periodically rock the levers l6 and the levers 17 and this causes the revolving members: 13 and the revolving members 1.4 tobe alternately pressed against the topmost sheet of the pile and to be raised up and out of engagement therewith.
  • These members 13 and 14 are continually revolved or at least while they are on the pile, and in opposite directions, as indicated by arrows in Figure 4, by means to be subsequently described.
  • the friction member or presser foot 18 presses on the topmost sheet and prevents it from moving bodily, and the result is that the members 15 cause the sheet to bulge or buckle, as shown at 27 between the buckling menr bers and the presser foot 18 and the pile as a whole remains undisturbed.
  • This buckling action draws the front edge 26 of the top sheet fro-m under the ends: of the fingers 24 and the latter then press firmly on the second sheet of the pile.
  • the buckling members 13 have thus served the purpose of withdrawing the edge of the top sheet from the separating fingers 24 by buckling a portion of the sheet without disturbing the sheet as av whole and without altering. the condition of the pile.
  • the high portion of the cam 2 now acts on the roller 69, rocking the levers 16 and raising the buckling members off the sheet.
  • the foot 18 remains in contact with the top sheet and as the buckling members disengage from the sheet the latter tends to flatten out, since there is nothing to maintain the loop 27.
  • the forward edge 26- passes over the edges of the fingers 24 so that this edge of the sheet is now separated from the edge of the sheet below it by the fingers 24 interposed between them.
  • the low portion of the cam 1 then allows the levers 17 to rock and the members 14 press down on the sheet which was previously buckled. As these rollers 14 are turning anticlockwise in figure 4 they move the sheet forwardly. passing it over the fingers 24 and into the bightof the rollers 37 and 21.
  • the sheet is then carried by the tapes 22 and 31 down to the gauge 38 in position to be taken by the ordinary grippers (not shown) on the impression cylinder 67 of the press. It is necessary for the foot 18 to engage the top sheet only until the edge 26 thereof rises over the fingers 24 and after that the foot may be lifted off the sheet by the cam 111 though the rollers 14 may be able to carry the sheet forwardly even if the foot 18 is not raised.
  • the above operations need not take place in the exact order described. For instance the rollers 14 may come down on the sheet before the buckling rollers 13 have been entirely raised clear of the sheet but after the buckling operation has taken place, thoughit is preferable that the parts operate in the manner above described. . The above operations are repeated and at each operation'a sheet is fed to the press.
  • the sheets are fed to the press 'with, the same side up as they are in the some of the above parts-may be bodily transferred to operate for the reverse feeding if I desired, or a duplicate set of such parts may be utilized for the purpose.
  • the parts in the reverse feeding device corresponding to 'those in the direct feed will be lettered with corresponding reference numerals but with the exponent a added thereto, in order to indicate what parts may be utilized for both feeding devices if desired.
  • the reverse feeding device preferably operates at the rear end of the pile or the end opposite to that on which the direct feed operates.
  • the levers 16 may be the levers 16 transferred to the new position or they may consist of another set provided for the purpose. They carry the buckling rollers 13 and their rollers 69 are operated by the cam 2 the same as the rollers 69 in the first device.
  • the levers 17 correspond with the levers 17 and they carry the feed rollers 14 and their rollers 70 are operated by the cam 1 the same as the rollers 70.
  • the device for reverse feeding corresponds, except for the location of the parts, with the direct feed device.
  • the shaft 3 is preferably revolved in the reverse direction when the reversing feed is operat-
  • Theshaft 39 carries a series of tape rollers 44 which are arranged near the end of the pile of sheets and the fingers 24 reach over this shaft in the manner that the fingers 24 reach over the shaft 73.
  • rollers 52 there is a shaft 83 mounted on the frame arm 106 which swings with the frame 80 from the shaft 39, and it carries a set of tape rollers 52 disposed near the opposite end of the pile.
  • the endless tapes 55 engage around a large portion of the rollers 47, lying under or at the side of thetapes 54, and these tapes 55 pass from the tops of the rollers 47 on an incline and below the shaft 3 to the rollers 52, thence partly around the latter to the small rollers 51, thence over the latter and back to the rollers 47.
  • rollers 85 On the shaft 82 there is a set of tape rollers 85, and on the forward end of the movable arms 84 there is a shaft 86 carrying a set of rollers 53 aligning with the rollers 85.
  • the endless tape belts 56 engage over the rollers 85 and the rollers 53 and the lower runs of these belts come just over the upper runs of the belts 55 and are parallel therewith and incline toward the belts 22 and 31.
  • the sheet separating device at the left in Figure 2 operates the same as the one first described except that the parts operate in opposite directions.
  • the buckling rollers 13 descend into contact with the top sheet of the pile when the low portion of the cam 2 reaches the roller 69,
  • the buckling rollers 13 are revolving anticlockwise in Figure 2 and they cause the top sheet to buckle toward the foot- 18 and this moves the left hand end of this sheet from under the fingers 24.
  • the buckling rollers then disengage from the sheet and the feed ing rollers 14 are depressed and come into contact with the top sheet.
  • these latter rollers-are revolving clockwise they advance the sheet over the fingers 24 toward the left in Figure 2, until the sheet passes between the tapes 54 and 55, after which the,
  • feed rollers 14 are raised again.
  • the sheet is taken by the tapes 54 and 55, it is carried part way around the rollers 47 and it leaves the latter near the top and is carried between the upper runs of the tapes 55 and the lower runs of the tapes 85, passing downwardly to the rollers 52, 53.
  • The'buckling and feeding rollers 13, 14 are readily transferable from one position to the other to change the feed, if one set is to be provided, or else duplicate sets are provided.
  • the reverse feeding device When the reverse feeding device is to be placed out of operation the frame 80 and arms 106 which carry the rollers 52, 53, are swung upwardly on the shaft 39 and the whole reverse feeding device is swung out of position.
  • the tapes 22 and 31 are common to both feeding devices which simplifies the construction and insures the feeding of the sheets to the same point on the press regardless of which feeding device is used. While I have referred to the feeding device as operating at different times it will be obvious that they may both be operated at the same time. In that case one sheet will be fed direct to the press and the next sheet will be reversed, etc. and the latter sheet may be fed to the press or it may be delivered from the tapes 52, 53', onto any support placed to receive it, and in that case each alternate sheet will be printed and the others will be separated and removed. This may be done where slip sheets are to be removed from the pile during printing.
  • the member 66 may have its periphery provided with knurlings of different coarseness for different papers. I have shown partof its periphery provided with fine knurlin'gs 11 1 and 115.
  • the pin 100 engages in any of the holes 105 of the member'66 for locking the latter against turning and the pin may be Withdrawn and reengaged in different holes to lock the member 66 Withany of its knurled portions in activeposition according to the character of sheets to be fed.
  • a device for feeding sheets singly from a pile comprising means for holding a pile of sheets, means for separating sheets singly from said pile and for feeding them direct, and means for separating sheets singly from the same pile and for reversing or turning said sheets and for feeding them.
  • a device for feeding sheets singly from ajpile comprisin means for holding a pile of-sheets, means or separating sheets singly fromcthe pile and for feeding them direct "andmeans for separating sheets singly from said pile and for reversing and feeding the sheets, either of said'feedingdevices being adapted to beset into operation at will.
  • a device for feeding sheets singly from a pile comprising means for holding a pile of sheets, means for separating sheets singly from said pile and for feeding them direct to a predetermined point, and means for separating sheets singly from said pile and for reversing the sheets and feeding them to the same point as said direct feeding device.
  • a device for feeding sheets from a pile comprising means for holding a pile of sheets, means for separating sheets singly from said pile and for feeding them, means for separating sheets singly from said pile and for reversing and feeding them, said direct and said reverse feeding devices being adapted to operate alternately on the same pile of sheets.
  • a device for feeding sheets from a pile comprising means for holding a pile of sheets, means operating near one side of the pile and adapted to take the sheets singly from the pile and to feed them direct to a conveyor, means for taking sheets singly from another side of the same pile and for reversing the sheets and feeding them to a conveyor, and a common conveyor adapted to receive the sheets from said direct or said reverse feeding means.
  • a device for feedin sheets from a pile comprising means for diolding a pile of sheets, means for taking sheets singly from one side of said pile and for feeding them direct to a conveyor, means for taking sheets singly from another side of the same pile and for reversing and feeding them to said conveyor, including revolvable means and means for carrying the sheets partially around said revolvable means, a belt conveyor adapted to feed the reversed sheets from said reversing means, and a belt conveyor adapted to receive the sheets either from said direct feeding device or from said last mentioned conveyor.

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Description

a J. H. STONEMETZ AUTOMATIC SHEET FEEDING DEVICE .Aug. 12 1924.
. Filed Nov. "18 1919 9 Sheets-Sheet 1 fix r a L mm mm R l Il \M N r QN i Q 9 m A n.
Aug. 12 1924.
J. H. STONEMETZ AUTOMATIC SHEET FEEDING DEVICE Filed Nov. 18 1919 9 Sheets-Sheet 5 Aug. 12, 1924. 1,504,914
J. H. STONEMETZ AUTOMATIC SHEET FEEDING DEVICE Filed Nov. 18 1919 9 Sheets-Sheet 4 Aug. 12 .1924. 1,504,914
J. H. STONEMETZ AUTOMATIC SHEET FEEDING DEVICE Filed Nov. 18. 1919 9 Sheets-Sheet 5 Aug. 12 1924. 1,504,914
A J. H. STONEMETZ I AUTOMATIC SHEET FEEDING DEVICE Filed Nov. 18 1919 v 9 SheetsSheet 6 N N w Wv R} Gall/0&0 W,
Aug. 12 1924.
1919 9-Sheets-Sheet 7 Filed Nov. 18
Aug. 12, 1924. 1,504,914
.J. H. STONEMETZ AUTOMATIC SHEET FEEDING DEVICE Filed Nov. 18, 1919 9 Sheets-Sheet 8 Aug. 12 1924.
J. H. STONEMETZ AUTOMATIC SHEET FEEDING DEVICE Filed Nov. 18 1919 9 Sheets-Sheet 9 llllllll'] Ill-I'll- |||l| .ll'llllllll. .ll-IIL lltfiT--- H l UNITE t starts PATENT oFFicE.
JOHN H. STONEIJIETZ, OPE NEW LONDON. CONNECTICUT, ASSIG-NOR TO THE BABCOGK PRINTING PRESS IZEANUFAGTURING COMPANY, OF NEW LONDON, CONNECTICUT,
A CORPORATION OF CONNECTICUT.
AUTOMATIC SHEET-FEEDING DEVICE.
Application filed November 18, 1919. Serial No. 338,835.
To atZZ whom it may concern:
Be it Known that I, J OHN H. STONEMETZ, a citizen of the Unlted States, and a resident ofNew London, in the county of New Lon,.
don and State of Connecticut, have invented certain new and useful Improvements. in .ztutomatic Sheet-Feeding Devices, of which the following is a specification.
My invention relates to automaticmeans for taking sheets of paper or other stock singly from a pile or stack and feeding them to a machine. Although not limited to such use, my invention is particularly useful for automatically feeding sheets singly to a printing press.
One of the principal objects of my inven' tion is to provide a sheet. feeding device which will be simple in construction, easy to operate, and which will unfailingly take the sheets singly from a pile and feed them to the printing press or other machine.
One of the advantages of the present device is that it will operate effectively on light or heavy stock. Another advantage is that the whole or a substantial part ofthe pile need not be combed out or extended or disturbed, as the device causes no alterationing sheets to remain stacked in a perpendicu lar pile with. their edges even. In most of the automatic feeding devices heretofore used the sheets are combed out so that a number of sheets at the top of the pile extend some distance beyond the pile or stack and the accurate separation of individual sheets depends upon the tendency of the upper sheets of the pile to slip upon each other when rubbed or combed, and this at best is not a very reliable method of placing the sheets in condition for separation. The present device does \not depend upon this well known combing action, and it is more reliable and uniform in its operation. In the former devices referred to the topmost sheet had to be entirely moved before the sheet next below it could be held, where as, in the present case the sheets may be held at practically all times if desired.
Another object of my invention is to provide a feeding device which'will take the sheets singly from the pile and feed them to a machine or printing press with the same decided advantage.
If the sheets have been printed on one side and it is desired to run them through the press to print the reverse side the pile need not be turned, if the sheets in it are not right side up, but instead, the feeding device may be set to turn or reverse the sheets as they are fed. No matter how the sheets appear in the pile nor which side is to be printed the device may be set to feed either way to the press without inverting the pile. In some cases it may be desirable to remove slip sheets from the pile while other sheets are being fed to the press and in such cases the direct feed may be used to feed the sheets to the press and the reversing device may be used for removing each alternate or slip sheet and for delivering it separately instead of to the press.
Another advantage of the present device is that it may be embodied in the press structure or it may be embodied in an independent structure, the mechanism being adapted for either construction.
Another advantage is that the device may be readily thrown out of operation to permit the sheets to be hand fed from the ordiplication,
Figure 1 is an elevation of the feeding end of a printing press to which my inven tion has been applied, the feeding device be ing shown partially diagrammatically, and showing the latter arranged to feed direct or without turning the sheets,
Figure 2 is a similar view showing the feeding device arranged to reverse or turn the sheets as they are fed singly,
Figure 3 is a similar view, partially diagrammatic, showing the reversing device thrown out of operation and the direct feed in operation.
Figure 4 is a side elevation of part of the feeding device, showing the cams for operating the same,
Figure s a side elevation 5 means for howing the Figure 9 is a side elevation of part of the frame and the support for raising the reverse feeding rollers,
Figure 10 is a similar view showing the parts in lowered position,
Figure 11 is a plan view of the reverse feeding device,
Figure 12 is an elevation of the combined direct and turning feeding devices.
In the drawings I have shown only one end of a printing press to which I have applied my invention for feeding the sheets. It will be understood that the invention may be utilized for feeding sheets to any other Ti kind of machine, but the present embodiment shows one of the my invention.
I have shown at 41 one end of one of the side frames of an ordinary flat bed printing press- I have also shown the impression cylinder 67 of the press, and the ordiprincipal applications of nary feed table 28 for hand feeding to the press, the latter, of course, not
' being used when the automatic feed is used, though parts of the latter may rest on this feed table. I prefer to employ framesor standards 10 attached to or formed integral with the press frame 41 as a support for the feeding mechanism though the latter may be arranged on a structure which may be moved about separate from the press if desired.
There are brackets 68 extending upwardly from the frame, in which the shaft 3 is journaled: This shaft 3 is operated in any suitable manner, preferably from the main shaft of the printing press or other machine to which the feeding device is ap plied; and from this shaft 3 all the mechanism of the feeder is operated. Many of the parts of the feeding device are duplicated at opposite sides of the press and where the parts are duplicated they have corresponding. reference numerals. There are cams 2 fixed to the shaft 3 to revolve therewith and there are other cams 1 which are loose on I. this; shaft but which are secured against the faces of the cams 2 by means of the bolt and slotfconnectlons 4 which permit the cams 1 to be adjusted circumferentially in relation to the cams 2' inorder to adjust the period during which the feeding rollers are to act upon the sheets. There is a shaft 7 extending crosswise of the apparatus and slightly ahead of. and below the shaft 3, on which a pair of levers 16 are journaled,. as well as the pair of levers 17. The former levers have rollers 69 on one arm which engage the peripheries of the cams 2 so that the levers are periodically rocked. The levers 17 have rollers 70 on one of their arms which engage the peripheries of the cams 1 so that these levers are also periodically rocked but at a different time to the rocking of the levers The forward arms of the levers 16 carry a shaft 11 on which the sheet buckling members are mounted. These sheet buckling members and the feeding members may all be made the same so that a description of one will answer for all. There is a hub 71. on the shaft llprovided with flanges or disks 72 and between these are mounted on short shafts, the friction rollers 15 which may be made of rubber, hard fiber or other material and which may be arranged to turn under tension. These sheet buckling members are arranged to turn with the shaft 11 and there are preferably two or more of them spaced apart on this shaft to engage different portions of the width of the sheets. The forward arms of the levers 17 carry a cross shaft 12 on which are fixed the feeding members 14 which are preferably made like. the members 13. These buckling and sheet feeding members are revolved by means of a driving device to be hereinafter described.
The pile 25 of sheets to be fed is placed upon the table 42 carried by brackets 43 which are preferably elevated step by step automatically by any of the known devices adapted for the purpose. Above the topmost sheet of the pile I have arranged a sheet holder or presser foot 18 supported upon the arms 19 and placed to the left of the members 13 in figure 4-. It may be here stated that the present description refers to the device for feeding the sheets without turning them. The presser foot 18 is adjustable along the arms 19 toward or from the buckling members 13. If it is desired to raise and lower the presser foot the arm 19 is mounted upon a shaft 109, which is placed in the boss which receives the shaft 7 or the boss which receives the shaft 7*. When the reverse feeding device is operating, the shaft 109 may replace shaft 7, whereas, when the direct feeding device is in operation, the shaft 109 may replace shaft 7. The arm 110 on the shaft 109 has a roller engaging the cam 111 on the shaft 3 and the cam serves to rock shaft 109 to raise the presser foot 18 off the pile while the top sheet is being withdrawn or fed out.
There are arms 29 pivoted at 7 3 and their forward ends are preferably chamfered and rest upon the forward end of the hand feed table 28 near the paper gauge 38 and near the impression cylinder. These arms are adapted to swing upon the shaft 73 in order to carry the parts of the feeder out of the way to make parts of the press accessible for repairs or adjustment and also to throw the automatic feeding device out of the way when it is desired to use the feeder table 28, and to feed the sheets by hand. When the arms 29 are down or in operative position they incline downwardly fromthe level of the top of the pile to the point at which the sheets are fed to the press. On the shaft 7 3 there are arranged the grooved rollers 21 and at the lower ends of the arms 29 there is a shaft 74 carrying corresponding rollers 30; and over these several rollers there travel the endless belts or tapes 22 on which the sheets are supported and carried from the sheet separator to the press. I have provided a belt tightener 32 for taking up slack in the tape belts 22 as conditions may require.
I prefer to arrange a set of tape belts to engage the tops of the sheets to prevent the latter from being displaced from the tapes 22 and to secure positive movement of the sheets. For this purpose I have mounted arms 76 in brackets on the arms 29 and they carry a. shaft 77 having a set of tape rollers 37 arranged above the rollers 21; and a shaft 78 having a set of tape rollers 36 above the rollers 80. Endless tape belts 31 engage over the rollers 36, 37; and their lower runs engage the upper surface of the sheet which is being carried upon the upper runs of the tapes 22 and they prevent the sheet from flying off the latter and assist in carrying it to the press.
Just in advance of the shaft'73 I have arranged a rocker shaft 23 which carries a number of fingers 24 which reach over the shaft 73 and the thin ends of these fingers rest on the top of the pile of sheets near one edge thereof.
I will here describe the operation of that branch of the invention which has been described above. The shaft 3 revolves continuously in the direction indicated by the arrow as long as the feeding device is in operation. The cams 2 and 1 periodically rock the levers l6 and the levers 17 and this causes the revolving members: 13 and the revolving members 1.4 tobe alternately pressed against the topmost sheet of the pile and to be raised up and out of engagement therewith. These members 13 and 14 are continually revolved or at least while they are on the pile, and in opposite directions, as indicated by arrows in Figure 4, by means to be subsequently described. Assuming that a pile of sheets is arranged upon the table 42 and that the topmost sheet lies just under the rollers 13 with the fingers 24 resting on this topmost sheet near .its forward edge, the feeding action will be accomplished as follows: The cam 1 acting on the roller 70 will have depressed the rear armof the lever 16 so that the forward arm of this lever will have been raised until themembers 14 disengage from the topmost sheet. Vi hen the low portion of the cam 2 reaches: the roller 69, the levers 16 rock so that their forward ends go down until the buckling members 13 press on the top sheet of the pile. As these buckling members are revolving clockin Figure 4 the wheels '15 rub and tend to move the topmost sheet rearwardly or toward the left in Figure 4. The friction member or presser foot 18 presses on the topmost sheet and prevents it from moving bodily, and the result is that the members 15 cause the sheet to bulge or buckle, as shown at 27 between the buckling menr bers and the presser foot 18 and the pile as a whole remains undisturbed. This buckling action draws the front edge 26 of the top sheet fro-m under the ends: of the fingers 24 and the latter then press firmly on the second sheet of the pile. The buckling members 13 have thus served the purpose of withdrawing the edge of the top sheet from the separating fingers 24 by buckling a portion of the sheet without disturbing the sheet as av whole and without altering. the condition of the pile. The high portion of the cam 2 now acts on the roller 69, rocking the levers 16 and raising the buckling members off the sheet. The foot 18 remains in contact with the top sheet and as the buckling members disengage from the sheet the latter tends to flatten out, since there is nothing to maintain the loop 27. As the sheet flattens out, the forward edge 26- passes over the edges of the fingers 24 so that this edge of the sheet is now separated from the edge of the sheet below it by the fingers 24 interposed between them. The low portion of the cam 1 then allows the levers 17 to rock and the members 14 press down on the sheet which was previously buckled. As these rollers 14 are turning anticlockwise in figure 4 they move the sheet forwardly. passing it over the fingers 24 and into the bightof the rollers 37 and 21. The sheet is then carried by the tapes 22 and 31 down to the gauge 38 in position to be taken by the ordinary grippers (not shown) on the impression cylinder 67 of the press. It is necessary for the foot 18 to engage the top sheet only until the edge 26 thereof rises over the fingers 24 and after that the foot may be lifted off the sheet by the cam 111 though the rollers 14 may be able to carry the sheet forwardly even if the foot 18 is not raised. The above operations need not take place in the exact order described. For instance the rollers 14 may come down on the sheet before the buckling rollers 13 have been entirely raised clear of the sheet but after the buckling operation has taken place, thoughit is preferable that the parts operate in the manner above described. .The above operations are repeated and at each operation'a sheet is fed to the press.
It will be observed that in the above operations the sheets are fed to the press 'with, the same side up as they are in the some of the above parts-may be bodily transferred to operate for the reverse feeding if I desired, or a duplicate set of such parts may be utilized for the purpose. The parts in the reverse feeding device corresponding to 'those in the direct feed will be lettered with corresponding reference numerals but with the exponent a added thereto, in order to indicate what parts may be utilized for both feeding devices if desired.
The reverse feeding device preferably operates at the rear end of the pile or the end opposite to that on which the direct feed operates. There are bosses in the frame to which theshaft 7' may be transferred bodily, or in which a corresponding shaft 7 may be journaled. The levers 16 may be the levers 16 transferred to the new position or they may consist of another set provided for the purpose. They carry the buckling rollers 13 and their rollers 69 are operated by the cam 2 the same as the rollers 69 in the first device. The levers 17 correspond with the levers 17 and they carry the feed rollers 14 and their rollers 70 are operated by the cam 1 the same as the rollers 70. There is a friction orpresser foot 18 arranged to the right of the buckling rollers in Figure 2, which serves the same purpose in relation to these buckling rollers as the foot 18 does to the buckling rollers 13.
There is a shaft 23 carrying the separator fingers 24*, which latter correspond with the fingers 24, but the former are arranged to engage'the top sheet at the opposite end of tl1e'pile,to that engaged by the fingers 24.
Thus far, the device for reverse feeding corresponds, except for the location of the parts, with the direct feed device. The shaft 3 is preferably revolved in the reverse direction when the reversing feed is operat- There is an extension bracket 80 at the rear of the machine, pivoted on the shaft 39 and in which there is mounted a series of tape rollers." Theshaft 39 carries a series of tape rollers 44 which are arranged near the end of the pile of sheets and the fingers 24 reach over this shaft in the manner that the fingers 24 reach over the shaft 73. There is another shaft 81 arranged higher than the shaft 39 and to the left thereof in Figure 2, and this shaft is provided with tape rollers 49, aligning with the rollers 44. At a still higher point and to the right of the shaft 81 there is another shaft, 82, which carries the tape rollers which align with the rollers 49 and 44. concentrically of the shafts 39, 81, 82, there is a shaft 48 which carries larger tape rollers 47. There are endless tape belts 54 which pass over the rollers 44, thence partly over the rollers 47 (at the rear), thence over the rollers 50, thence over the rollers 49 and back to the rollers 44.
There is a shaft 83 mounted on the frame arm 106 which swings with the frame 80 from the shaft 39, and it carries a set of tape rollers 52 disposed near the opposite end of the pile. There is a set of small guide rollers 51 near the rollers 47. The endless tapes 55 engage around a large portion of the rollers 47, lying under or at the side of thetapes 54, and these tapes 55 pass from the tops of the rollers 47 on an incline and below the shaft 3 to the rollers 52, thence partly around the latter to the small rollers 51, thence over the latter and back to the rollers 47.
On the shaft 82 there is a set of tape rollers 85, and on the forward end of the movable arms 84 there is a shaft 86 carrying a set of rollers 53 aligning with the rollers 85. The endless tape belts 56 engage over the rollers 85 and the rollers 53 and the lower runs of these belts come just over the upper runs of the belts 55 and are parallel therewith and incline toward the belts 22 and 31.
The sheet separating device at the left in Figure 2 operates the same as the one first described except that the parts operate in opposite directions. The buckling rollers 13 descend into contact with the top sheet of the pile when the low portion of the cam 2 reaches the roller 69, The buckling rollers 13 are revolving anticlockwise in Figure 2 and they cause the top sheet to buckle toward the foot- 18 and this moves the left hand end of this sheet from under the fingers 24. The buckling rollers then disengage from the sheet and the feed ing rollers 14 are depressed and come into contact with the top sheet. As these latter rollers-are revolving clockwise they advance the sheet over the fingers 24 toward the left in Figure 2, until the sheet passes between the tapes 54 and 55, after which the,
feed rollers 14 are raised again. The sheet is taken by the tapes 54 and 55, it is carried part way around the rollers 47 and it leaves the latter near the top and is carried between the upper runs of the tapes 55 and the lower runs of the tapes 85, passing downwardly to the rollers 52, 53. As the edge of the. sheet passes from these latter rollersit "38 ready to be taken by the grippers on the cylinder 67.
It will be apparent that when the sheet travels part way around the rollers 47 it is reversed or turned so that the sheet, if .it was previously printed on one side and lay printed side up on the pile 25, will be turned on the rollers 47 and by the time it reaches the tapes 54 and 55 and until it is fed to the press, it will have its opposite or unprinted side up. If the direct feeding device is in operation the sheets will be fed the same side up as they appear in the pile and they will be printed on the upper side; but if the reverse feeding device is in operation the sheets will be reversed as they are fed and the side of the sheets which is turned down in the pile will be printed on.
The'buckling and feeding rollers 13, 14 are readily transferable from one position to the other to change the feed, if one set is to be provided, or else duplicate sets are provided. When the reverse feeding device is to be placed out of operation the frame 80 and arms 106 which carry the rollers 52, 53, are swung upwardly on the shaft 39 and the whole reverse feeding device is swung out of position. There is a pin 108 adapted to be inserted in either the upper or. lowerhole 108 in the bracket 107, for
supporting the frame 80 and arms 106 in either their raised or lowered position. The tapes 22 and 31 are common to both feeding devices which simplifies the construction and insures the feeding of the sheets to the same point on the press regardless of which feeding device is used. While I have referred to the feeding device as operating at different times it will be obvious that they may both be operated at the same time. In that case one sheet will be fed direct to the press and the next sheet will be reversed, etc. and the latter sheet may be fed to the press or it may be delivered from the tapes 52, 53', onto any support placed to receive it, and in that case each alternate sheet will be printed and the others will be separated and removed. This may be done where slip sheets are to be removed from the pile during printing.
I will here describe the means for operat ing the several rollers and tapes. On the shaft 3 there is a large gear 5 which operates either one or both of a train of gears for turning the buckling and feeding rollers. The gear 5 operates the gear 6 which is loose on the shaft 7 and this gear 6 meshes with and operates the gear 8 which is keyed or splined to the shaft 11. The latter is the .verse feed device.
is 'a sprocket 91.
shaft which carries one set of buckling rollers and it is apparent that .the'gears 5, 6, and 8 will turn the rollers 13. There is a second gear 9, on the shaft 11 and this meshes with and operates the gear 10 keyed or splined on the shaft 12. The latter carries the feed rollers 14 and it will be obvious that these will revolve in the reverse direction to the rollers 13. I I f At the other end of the apparatus 1 have provided gears 6, 8 9 and 10? which are operated by the gear 5 and they correspond with the gears 6, 8, 9, andlO, respectively, and they operate. similar: parts on the re- There is a shaft 92 on "which there is a gear 35 which is operated by the gear 5. On the same shaft with. the gear 35' there On the shaft 93 there isa corresponding sprocket '94 and alsofa gear 34. The latter meshes with a gear 95011 the shaft 73 which carries 'the tape rollers 21. At the opposite end of the device there is a sprocket wheel 34 aligning with the sprocket 91 and on the same shaft 97 there is a gear 96 which meshes with the gear '98 on the shaft 39 which carries the tape rollers 44. On the same shaft 39 there is a gear 58 which. meshes with and operates the gear 59' on the shaft 48 whichcarries the tape rollers 47.
These severalsprockets and'gears are preferably arranged on the respectiveshafts outside the frame 40 as shown in Figure 6. There is an endless chain 33, engaging over the sprocket 91, by which it is driven, and also engaging over the sprockets 94, and 34*, which latter, the chain drives. The rollers 50 and the belts 56 are driven by the belts 54. The rollers 37 and 36 are driven by contact with the rollers 21 and 30, respectively. I
In Figures 7 and 8'1 have showna modificat-ion wherein the buckling and feeding is done by the same rubbing members. Herein, the cam 60, adjustable on the shaft 3 by meansof the bolt and slot 4,'operates on a roller 62-to rock a lever arn' 61 which is secured to'a shaft 64, the lever being operated in the opposite direction by the spring 102. To the lever arm 63, fixed to theshaft 64, there is pivoted alink 65 which carries on its free end a rtibbing member 66 which preferably has a rubber or combing wheel surface. The member 66 is adjustable about its axis but it does not revolve while in operation. As the lever 61, 63, is rocked by the cam 60, and spring 102, the member 66 is first moved to the left, as in Figure 7, and this causes the top sheet to buckle at 27 and its leading edge to be withdrawn from the separator fingers 24, which latter are omitted in this view. The lever 61, 63, is then rocked in the opposite direction and the member 66 moves to the as shown inFigure 8. This advances to provide, gears Orother means for revolving it.
y The member 66 may have its periphery provided with knurlings of different coarseness for different papers. I have shown partof its periphery provided with fine knurlin'gs 11 1 and 115. The pin 100 engages in any of the holes 105 of the member'66 for locking the latter against turning and the pin may be Withdrawn and reengaged in different holes to lock the member 66 Withany of its knurled portions in activeposition according to the character of sheets to be fed.
.The mechanism herein described operates positively to separate and feed one sheet at each operation. With the combined feed the machine may be quickly changed at Will to feed the sheets either side up, and in the fullest embodiment ofmy invention the same devices areus'ed to carry the sheets to the press cylinder. I do not limit my invention to the articular form specifically described herein but include all forms coming Within the scope of theannexed claims.
Having described my invention What I claim is:
1. A device for feeding sheets singly from a pile, comprising means for holding a pile of sheets, means for separating sheets singly from said pile and for feeding them direct, and means for separating sheets singly from the same pile and for reversing or turning said sheets and for feeding them.
2. A device for feeding sheets singly from ajpile, comprisin means for holding a pile of-sheets, means or separating sheets singly fromcthe pile and for feeding them direct "andmeans for separating sheets singly from said pile and for reversing and feeding the sheets, either of said'feedingdevices being adapted to beset into operation at will.
-3. A device for feeding sheets singly from a pile, comprising means for holding a pile of sheets, means for separating sheets singly from said pile and for feeding them direct to a predetermined point, and means for separating sheets singly from said pile and for reversing the sheets and feeding them to the same point as said direct feeding device.
4. A device for feeding sheets from a pile comprising means for holding a pile of sheets, means for separating sheets singly from said pile and for feeding them, means for separating sheets singly from said pile and for reversing and feeding them, said direct and said reverse feeding devices being adapted to operate alternately on the same pile of sheets.
5. A device for feeding sheets from a pile,
comprising means for holding a pile of sheets, means operating near one side of the pile for taking the sheets singly from the pile and for feeding them direct, and means operating near another side of the pile and adapted to take the sheets single from the pile and to reverse and feed the sheets.
6. A device for feeding sheets from a pile, comprising means for holding a pile of sheets, means operating near one side of the pile and adapted to take the sheets singly from the pile and to feed them direct to a conveyor, means for taking sheets singly from another side of the same pile and for reversing the sheets and feeding them to a conveyor, and a common conveyor adapted to receive the sheets from said direct or said reverse feeding means.
7. A device for feedin sheets from a pile, comprising means for diolding a pile of sheets, means for taking sheets singly from one side of said pile and for feeding them direct to a conveyor, means for taking sheets singly from another side of the same pile and for reversing and feeding them to said conveyor, including revolvable means and means for carrying the sheets partially around said revolvable means, a belt conveyor adapted to feed the reversed sheets from said reversing means, and a belt conveyor adapted to receive the sheets either from said direct feeding device or from said last mentioned conveyor.
Signed at New London, county of New London and State of Connecticut, this 23 day of September, 1919.
JOHN H. STONEMETZ.
US338835A 1919-11-18 1919-11-18 Automatic sheet-feeding device Expired - Lifetime US1504914A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279787A (en) * 1964-06-22 1966-10-18 Frederick Post Co Sheet-feeding method and apparatus
US4223884A (en) * 1979-02-01 1980-09-23 Eastman Kodak Company Reverse buckle scuff feeder
US20170292642A1 (en) * 2016-04-08 2017-10-12 Axon Pressure Products, Inc. Manual quick connect hub clamping system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279787A (en) * 1964-06-22 1966-10-18 Frederick Post Co Sheet-feeding method and apparatus
US4223884A (en) * 1979-02-01 1980-09-23 Eastman Kodak Company Reverse buckle scuff feeder
US20170292642A1 (en) * 2016-04-08 2017-10-12 Axon Pressure Products, Inc. Manual quick connect hub clamping system

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