US1374131A - Automatic delivery for die-presses - Google Patents

Description

J. E. WOODBUBY. AUTOMATIC DELIVERY FOR DIE PRESSES. 'APPLICATION nun 0m. 26, 1916. RENEWED-JULY 9, 920.

1,374:,1 31 Patented Apr 5, 1921.

4 SHEETS-SHEET I.

J. E. WOODBU'RY.

AUTOMATIC DELIVERY FOR DIE PRESSES. APPLICATION FILED OCT. 26, 19 16. RENEWED Junk 9,1920.

1,374.131 Patented Apr. 5, 1921.

4 SHEETSSHEET 2.

fiazzz cia/z/a Z. 77002254 Wness 9/ a J.- E. WOODBURY.

AUTOMATIC DELIVERY FOR DIE PRESSES.

APPLICATION FILED OCT. 26. I916- RENEWED JUL! 9.1920. I

1,374, 1 3 1 Patented Apr. 5, 1921.

4 SHEETS-SHEET 3.

- 9 at y r L" WWJQL J. E. WOQDBURY.

' AUTOMATIC DELIVERY FOR DIE PRESSES.

APPLICATION FILED OCT. 26, 1915- RENEWED JULY 9, [920. 1,374,131, Patented Apr. 5,1921.

4 SHEETS-SHEET 4.

0 7& 00 (0' Witness: gmwr j JOHN E. WOODB'URY, 0F VIORCESTER, MASSACHUSETTS.

AUTOMATIC DELIVERY FOR DIE-PRESSES.

Specification of Letters Patent.

Patented Apr. 5, 1921.

Application filed October 26, 1916, Serial No. 127,960. Renewed July 9, 1920. Serial No. 395,121.

To all whom it may concern:

Be it known that 1, JOHN E. Woonnunr, a citizen of the United States, residing at orcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Automatic Delivery for Die- Presses, of which the following is a specification.

The principal objects of this invention are to provide a practical machine which can be applied to die printing presses of the type in which the die is inked and wiped automatically, and which can be used eventually as a link in a system in which sheets shall be fed mechanically to a machine of this type and then taken from it and placed in racks or the like, making automatic the entire routine operation of producing die stamped sheets. as for example letter headings; to provide for keeping the sheets separate as is necessary in this class of printing; to provide a novel mechanism whereby the sheets are taken out down through the infeeding mechanism, turned over, and. laid down on a moving conveyer so as to he kept separate at all times because the printed surface must not be allowed to come in contact with anything; to provide delivery grippers with means by which they are held shut while the sheet is being turned over, and by which they are held open 011 the returning motion; to provide a novel combination ofthese and other features of the machine, including side and front registers, and means for feeding the sheets into the press, so as to necessitate the performance of the various functions in a positive and accurate manner throughout the operation of the machine.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which- Figure 1 is a side view of a feeding device constructed in accordance with this invention and adapted to be applied to. an ordinary die press detachably;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1, showing the parts in another position;

Fig. 3 is a sectional view on the parallel line. 33 in Fig. 1, showing the parts in a third position;

4: is a sectional plan on the line 4.-4

of Fig. 2, showing the parts in the position shown in Fig. 2;

Flg. 5 is an enlarged side view of the delivery gripper construction;

Fig. 6 is a plan of part of the same as indicated by the arrow 6 in Fig. 5;

Fig. 7 1s a further enlarged sectional view on the line 7-7 of Fig. 5;

Fig. 8 is an enlarged side view of the feed ng in gripper from the inside, and

Fig. 9 18' a plan of part of the connections for operating the carriage.

Although cylinder and platen presses and similar types of printing machines are often provided with mechanical feeding devices, the die press of the above mentioned type is of such a nature that it is always fed by hand in practice and the sheets taken from it in the same manner, so that each sheet has to be handled twice by the operator. This is due to several reasons. On account of the very high pressure used in the printing, the press itself has to be of a heavy massive build which reduces the opportunity to place the sheet in register and to hold it in place and very much restricts the possible paths that the sheet may take in the operations of feeding in and withdrawing the same. Furthermore the printed surface must not be touohedfor some hours after the work is printed, and this makes necessary the turning of the sheets over and laying them out in such way that the printed surfaces are exposed.

Referring now to the drawings, I will describe the mechanism shown herein, although it is to be understood that 1 do not limit myself to the particular features of construction herein shown and described.

The machine is shown in the drawings as having a stationary frame work 10, which is provided with brackets 11 by which it is supported on dowels 12 carried by an intaglio die press A which is ordinarily fed by hand. The frame rests on these brackets and its weight holds it against the press with no other support than that described.

The machine is provided with a main shaft 13 receiving power through a sprocket wheel 1d located upon it from the main shaft of the press or from any other suitable source. This main shaft, through a chain 15 and sprocket wheels 16 and 17, drives a parallel shaft 18 near the top of the frame,

which in turn is provided with a large sprocket wheel 19 and chain 20 driving a third shaft 21 also parallel with the other two.

The shaft 18 is provided with a crank 22 beyond the large sprocket wheel 19 which operates a sliding rack 23, and by means of a pinion 24: drives a sheet-separating device B to deliver sheets therefrom under its rubber surfaced grooved roller 25. This sheetseparating device is not described or illustrated in detail because it is not apart of this invention, being a well-known machine. The sheets O are advanced from the separating device 13 to the press A by tapes 29 and then by a reciprocating frame 89, and are withdrawn from the press A by a swinging frame 117 and delivered to the feeding belts 144.

The shaft 21 by means of a pair of gears 26 drives a shaft 27 located closely adjacent thereto on which are a pair'of rubber rollers 28 for receiving the sheets from the sheetfeeding device and forcing them out on the feed tapes 29. These rolls and the shaft on which they are mounted are carried by swinging brackets 30 pivoted on the shaft 21 and overhanging the same, so that they are held down against a pair of idler rolls 31 on parallel shaft 310 by gravity.

On the shaft 21 is a pulley 32 which, by means of a belt and pulley drives another shaft 33, which is provided with roliers 3i thereon for driving the series of endless feed tapes 29 on which the sheets are delivered by the gravity rollers 28. These feed tapes are located between a series of slats 35 mounted in stationary position on stationary cross-bars, which constitute part of the frame. They are connected with these cross bars by adjusting and supporting screws 36 and support idle rollers 37 carrying the tapes 29. These slats run beyond the ends of the tapes to support the front end of the sheet in the registering position. The tapes may be made of any suitable material. All the other mechanism of the machine is operated by the three shafts 13, 18 and 21.

On the shaft 18 is an end register gage cam 40 which in itscomplete' rotation oscillates an arm 41 and a shaft 12 to which it is fixed, the arm being provided with a roller 43 for engaging the cam. This shaft 42 is mounted in hearings on brackets 44 carried by studs 4 10 on the frame 10 and has a pair of arms 15 carrying a cross-bar s This is provided with an upwardly extending arm 38 from which a spring 17 is connected with the shaft 18 so as normally to hold up this cross-bar 46 and the roller 43 yieldingly against the cam. The cross-bar i6 is provided with a plurality of sheet metal arms 39 which are upturned at their ends to guide the. sheets of paper under them and are spaced above the slats 35. At their outer ends, two of these arms are provided with adjustable members 41-8 having downwardly extending hooked ends 19 constituting end gages for registering the sheets. It will be obvious that the cam 40 raises and lowers these end gages periodically.

The shaft 18 is also provided with a side register gage cam 50 arranged to engage a cam roller 52 on an arm 53 fixed to an oscillating rod 54 carried by brackets 51 on the frame. A spring 55 coiled on this rod holds the roller toward the cam. This rod is provided with two radial fixed arms 56 which are connected by links 57 with arms Q 58 extending from two vertically oscillating rods 59 carried by brackets '60 on the frame. The bottom ends of these rods 59 are bent into horizontal position, and their ends are bent inwardly to form side registering gages 61. It will be obvious that the continued rotation of the cam, 50 periodically moves -these side'gages simultaneously inwardly to register the paper sidewise.

The gripperswhich first grlp the sheet and take it from the tapes will be descrlbed later,

as they constitute part of a mechanism which I will describe as a whole.

On the main shaft 13 is a carriage operating crank 62 which is pivotally connected with a rod 63 passing through a perforated lug 64: on an arm 65 fixed to the .end of a shaft 66 carried at the top of the frame. This rod is provided with a spring 67 fixed to it and coiled around it and bearing against the bottom of the lug 64: and is provided with a collar 68 fixed to it above the lug to cause the arm 65 to move positively with it through a part of its motion.

On the shaft 66 is another arm 69 provided with a stud 70 fixed to it and having 7 upon it a cam 71 provided with a concentric surface for engaging a roller 72 on a stud 73. This .stud is carried by a pair of links 7 constituting a frame pivoted on a cross rod 5. This stud 73 is provided with a rod 76 projecting radially from it and having a spring 760 upon it pressing against the stud 70. On the opposite side of this stud the rod has nuts tending to keep the roller against the cam 71 in all positions of the parts. This rod is fixed to and constitutes part of a frame 77 which is pivoted on a rod 78 carried by the main frame 10. At its lower end the two sides of this frame are connected with a pair of links 79 which are pivotally connected with two uprights 82 of a carriage 80 that slides on horizontal ways .81 supported by the machine frame. This carriage is provided with two pairs of uprights 82 and 85 carrying four supports 83 that ride on these tracks. The rear supports are pivoted and the front ones fixed. At the end of the carriage toward the sheet separating device two of these uprights 82 are provided with outwardly projecting studs 84 extending under the tracks to prevent this end of the frame from being lifted. It will be seen that the operation of the crank 62 reciprocates this carriage on its tracks.

At the end of this carriage toward the press two of the uprights 85 are bent inwardly at the bottom near the front, and to them are riveted two members constituting a horizontal skeleton supporting frame 86 for supporting the sheet during part of its motion. These uprights 85 also carry a transverse shaft 87 to which a spring 88 is connected that is also connected with, a pin or screw 89 on one of a pair of arms 90 pivoted to the carriage near the rear end of the same to assist in lifting these arms. The two arms are also connected with this shaft by two pairs of toggle levers 91, so that they necessarily move together. On the end of these arms they are provided with inwardly projecting plates 92 having rubber studs 93 upon them. These are adapted to come down on the frame 86 and constitute feed ing grippers for holding the paper and carrying it along with the carriage.

These toggle joints are operated by a feed ing gripper cam 94 located on the shaft 18. This cam operates a roller 95 on a lever 96 pivoted on the shaft 66 and connected by a link 97 with an arm 98 on the shaft 78. This arm extends beyond the point at which it is connected with the link and is provided with a stud by which it is connected with the arm 96 through a spring 99 that keeps these two arms as near together as possible under its impulse. The shaft 78 is also provided with an arm 100 which has a headed stud 101 upon it that is perforated to receive a rod 102 pivoted at its lower end to an arm 103 on the shaft 87 to which the toggle levers are fixed. This rod is provided with two pins 104 above and below the stud and consequently is operated by the oscillation of this shaft toward the end of its motion in each direction, but is not operated by it at all through the intermediate part of its motion. This results in bringing the toggle levers down so as to hold the grippers 93 locked in their gripping position, as the toggle joints are turned slightly beyond their straight position against stops 105. At the other end of its motion it pulls them back suddenly to fully open position and they are held there against accidental closing.

On the shaft 13 there is a carriage lifting cam 106 which operates a spring-pressed arm 107 on a shaft 108 which, by means of arm and link 109 operates an oscillating frame 110 pivoted on a rod 210. This frame is provided with two inwardly extending pins 111 for the purposeof engaging in notches 112 on the uprights 85 and raising acts normally to pull the roller away from the cam. This spring is not for that purpose, however, but to counter-balance the weight of the parts operated by this lever. The lever is pivotally connected by a link 116 with a frame 117 pivoted on a horizontal rod 118. At its end farthest from this pivot rod, this frame 117 is provided with a shaft 119, on which there is fixed a sprocket wheel 120 engaging a sprocket chain 121 which at one end is connected to an arm 122 which is pivoted to the frame 10 on an eccentric 123 for adjustment. At the other end the chain is connected by spring 124: with a stationary projection on the frame 10.

It will be seen, therefore, that when the cam 113 comes down to a position to cause this frame 117 to move about its pivot, the chain will cause the sprocket wheel to have a certain definite turning motion, and the shaft on which it is fixed also. This mechanism furnishes a very flexible arrangement, because by changing the position at which the ends of the chain are fixed the motion can be varied as desired. As shown herein the shaft 119 is turned slowly at first and rapidly later. On this shaft are fixed two L-shaped arms 125 which support a cross rod 126 fixed tothem and carrying a pair of parallel sheet supporting bars 127 connected by a cross piece which serves as a support for the sheets in certain positions of the parts. The arms 125 also carry a shaft 128 which is provided with a pair of projecting gripper fingers 129 that are adapted to come into contact with these bars and grip a sheet of paper thereto. This shaft 128 is operated in the following manner 0n the shaft 13 is a delivery gripper cam 130 engaging a roller 130 on the lever 131 which is provided with a spring to keep the roller in contact with the cam. A link 132 is connected with the opposite end of this lever and with an arm 133 pivoted to the shaft 118 which carries this frame. This arm 133 is connected by link 13d with an arm 135 fixed on the shaft 119. Also on this shaft are two metal disks 136, one fixed and the other adjustable, but both turning with the shaft. They are preferably roughened on their inner surfaces and between them is located a disk 137 which is free to turn on this shaft, but a pair of leather washers 138 are mounted on either way the grippers are operated during the motion of this pivoted frame. Also on the end of this shaft 128 is a stop pln 149 for engaging the link 140 and limiting the motion of the shaft 128.

'Although not constituting part of this invention, the frame 10 is shown as provided with a fixed rod 142 on which are loose grooved pulleys 143 carrying feeding belts 144 for taking the paper sheets C away from the machine; This can be operated in any desired way, but is shown as run by crossed belts 145 from grooved pulleys 146 fixed on the shaft 13. The belts 144 and 14-5 run on the same pulleys 143.

The operationof the machine is as follows :Starting with the parts in the position shown in Fig. 1, the rack 23 rises as the shaft 18, turns in the direction of the arrow and causes the feed roll 25 to feed the rear sheet of paper C out of the separatin device under the rolls 28. The carriage at this time goes to the extreme end of its stroke as indicated in Fig. 2, but let it be assumed that it does not carry a sheet as the machine is supposed to be just starting. The delivery frame 117 starts at the bottom without a sheet as in Fig. 1 and moves up to the position shown in Fig. 2.

The continued rotation of the main shaft causes the sheet C to continue to feed out as the carriage starts back. The sheet having reached a position nearly under the front gages 49 these are lowered by the action of the cam 40 and the sheet 0 is end registered. These front or end gages engage its end and stop its continued motion forward, which at this time is not controlled positively but is caused by the operation of the tapes 29 on which it rests. It is stopped at this point, therefore, and all sheets coming into this position are thus brought to a definite position at this time.

As the main shaft continues to rotate, the carriage comes back, and when its end uprights have passed back of the side gages 61, the cam 50 acts to bring them in from the position shown in Fig. 4 so as to register' the sheet at both sides and get it into a central position. As soon as this is accomplished, the carriage 80 now being in its extreme position at this end of the stroke, the gripper cam v94 acts to straighten out the toggle levers 91 and bring the feeding grippers 93 down into contact with the sheet and grip it to the flat frame 86 at a distance from its edges.

Then the cam 40 raises the end gages and the side gages draw back; The crank 62 on the shaft 13 now operates to pull down on the rod 63 positively moving the bell-crank 65-69 and causes the cam 71 to push. the swinging arms 77 toward the press and take the carriage with it, also of course taking thesheet C. It is just at this instant that the next sheet C starts out of the sheet separating device.

Continuing thisv motion the parts come to the position shown in Fig. 2, in which the first sheet C enters the press ready to receive the impression and the second sheet C gets well started out under the rolls 28. Just before the cam 71 turns soasto allow the roll 72 to drop from the high part of it, the uprights 85 come to their extreme position so that the pins 111 enter the notches 112 therein. This is shown in F ig. 2. Ju% at that instant the cam 106 pushes its cam roller out to the extreme end of its stroke and raises the frame 110 which carries the pins 111, thus lifting theend of the carriage about the pivots with which it is connected with the supports 83. Thus the sheet moves up against the counter a just before the impression is made, in thepress. lVhile the parts are in this position, the second sheet C moves almost entirely out of the sheet separating mechanism, and after the die moves away from the sheet, the cam 94 comes around to a position to allow the spring 99 to pull the arm 100 up and thus draw up the rod 102 and break the toggles so as to raise the feeding in grippers and release the sheet C.

During the operation above described the oscillating frame 117 has been moving idly, but now it comes into position to act on sheet C. W hen the parts are in the position shown in Fig 2 as has been described, the sheet support, consisting of the bars 127, is located in inclined position at its xtreine upward point of travel under the open space that is now left between the sheet supports 35 and86 so as to receive the end of the sheet that has been at the rear heretofore. It will be noted that the frame 86 is shorter than the sheet C and is bent down at its end so as to let the end of the sheet drop down on the bars 127. So when the printing operation is completed and the sheet is released, this end rests on these bars 127. Just this time the cam 130 actuates the rod 134 so as to. turn the delivery gripper fingers 129 and cause them to grip this end of the sheet against the supporting bars 127.

It is to be understoodthat the position of this frame 117 -is, of course, controlled by the cam 113 and the bars 127 by the sprocket and chain connection. As the frame moves down the friction holds the grippers shut against advancing bars 127 and then the action of the cam 130 through the friction causes the ripper fingers to release the sheet when it is in a substantially horizontal position with its forward end resting on the belts after it has passed through the position shown in Fig. 3. Then the frame, having reached the end of its downwardly swinging motion, starts back and reaches the position shown in Fig. 1, just after the next sheet C has been gripped and advanced beyond the end gages. The continued operation of the parts brings the second sheet up to printing position and the oscillating delivery frame back up to the position for the second grippers to grip that sheet and deliver it.

In this way it will be seen that the principle now used in hand feeding this class of machines is retained; namely, that one sheet is being fed into the press while another is being withdrawn; that the sheets are properly registered and positively gripped before the impression is made and the grip retained until impression is completedgthat the rise of the die in making the impression in this type of die press is accommodated automatically by lifting the carriage, that as soon as the impression is made the sheet is turned over in a very simple manner so that its freshly printed surface cannot come into contact with another sheet or any part of the machine and is delivered right side up on the traveling belts which are timed to travel just fast enough so that the impression which is at the forward end of the sheet at this time is left exposed. In other words, the sheet is always deposited on another sheet with its advance edge below the lowest part at which the impression is made. Furthermore a machine is provided in which the sheets are kept separate at all times; in which the feeding grippers positively snap on "or off and remain locked in either position; in which the second or delivery grippers are operated by a friction arrangement that permits them to be shut by the turning action of the feeding-out frame and held open on the return motion and in which the supports for the sheets are separated at the time of impres' si on so as to allow the rear end of the sheet to drop down to a point at which the delivery grippers oan grip it and turn it down and over, so as to deposit it the other side up.

It will be seen that this machine can be applied permanently to a die press as shown, although shown as detachably connected, and that it is so connected with it that it can serve as a link in an entirely mechanical plant in which the sheets are fed to the press, delivered and then stacked up without hand operation of any kind. The sheet feeding mechanism for feeding the sheets toward the press is not claimed herein by itself, as it constitutes part of my divisional application, filed on the date on which this case is renewed, and entitled Sheet feeding machine, Serial Number 395,107.

Although have illustrated and described only a single form of the machine and shown it as adapted for a die-press of a particular type, I am aware of the fact that many modifications can be made in the construction and arrangement of parts, and that it will be designed differently when applied to die presses of other constructions. There fore, T do not wish to be limited in these respects, but what I do claim is:

l. The combination with a die press, of means for advancing the sheets to the press, means to change the relative elevation of the sheets in the press as the impression is made, the advancing means having a supporting frame for the sheets adapted to support the forward ends of the sheets only, said supporting frame being movable to space it from said advancing means during the impression to permit the rear end of a sheet to drop down between them.

2. The combination with a die press, of means for supporting the sheets, and a supporting frame for the sheets adapted to support the forward ends of the sheets only, said supporting frame being movable to space it from said support during the impressien to permit the rear end of a sheet to drop down between them.

3. The combination of a supporting frame for sheets adapted to hold the forward ends of the sheets only, said supporting frame being movable to a position to permit the rear end of a sheet to drop down, and supporting bars in position below to receive the rear end of the sheet.

4:. The combination of means for advancing sheets to a press, means for changing t 11G elevation of the sheets in the press as the impression is made, stationary means for supporting the sheets, the advancing means having a supporting frame for the sheets and adapted to hold the forward ends of the sheets only, said supporting frame being movable to space it from said stationary support before the impression to permit the rear end of a sheet to drop down between them, and supporting bars in position below the space between said supports to re ceive the rear endof the sheet.

5. The combination of stationary means for supporting sheets until they are gripped, a sheet supporting frame for the sheets after they are gripped adapted to hold the forward end of the sheet only, means for moving said supporting frameto space it from the stationary support to permit the rear end of the sheet to drop down between them, supporting bars movable to a position to re ceive the rear end of the sheet, and a delivery gripper movable with the last named supporting means for gripping the end of the sheet. 7

6. The combination with a die press, of means for advancing the sheets toward the press, means for raising the gripping means 139 to elevate the sheets in the press as the impression is made, stationary means for supporting the sheets until they are gripped, a supporting frame for the sheets after they are gripped adapted to hold the forward end of the sheet only, means for moving said supporting frame to space it from said stationary support before the impression to permit the rear end of the sheet to drop down between them, supporting bars movable to a position below the space between said supports to receive the rear end of the sheet, the last named supporting bars being provided with a delivery gripper for gripping the end of the sheet, and means for turning the delivery gripper and its support over so as to bring the sheet into a position right side up.

7. The combination of means for supporting sheets, a supporting frame for the sheets adapted to hold the forward end of the sheet only, means for moving said supportlng frame to space it from said support to permit the rear end of the sheet to drop down between them, supporting bars movable to a position to receive the rear end of the sheet, a delivery gripper for gripping the end of the sheet, and means for turning the delivery gripper over so as to bring the sheet into a osition right side up.

8. Tie combination of means for supportingsheets, a supporting frame for the sheets adapted to hold the forward end of the sheet only, said supporting frame being movable to space it from the first named support to permit the rear end of the sheet to drop down between them, supporting bars movable to a'position to receive the rear end of the sheet, a delivery gripper for gripping the end of the sheet, means for turning the delivery gripper and the supporting bars over so as to bring the sheet into a position right side up to deliver it, and a carrier in position to receive the sheets therefrom.

9. The combination of a supporting frame for sheets adapted to hold the forward end of the sheet only, supporting bars movable to a position to receive the rear end of the sheet, a delivery gripper for gripping the end of the sheet, means for turning the delivery gripper and the supporting bars over so as to bring the sheet into a position right side up to deliver it, and a carrier in position to receive the sheetstherefrom.

10. In a machine of the character described, the combination of a paper feeding carriage having a frame at its forward end for supporting the front end of a sheet, said frame being open at the rear and being adapted to allow the rear end of the sheet to hang down from it, a delivery frame, a pair of supporting bars carried by said delivery frame and movable thereon, means for moving said frame to a position under the carriage, and means for simultaneously moving said supporting bars into position under the frame on the carriage to receive the rear end of the sheet.

11'. In a machine of the character described, the combination of a reciprocating paper feeding carriage having a frame at its forward end for supporting the front end of a sheet, said frame being adapted to allow the rear end of the sheet to hang down from it, an oscillating delivery frame. a pair of supporting bars carried by said delivery frame and movable thereon, means for swinging said frame up to a position under the carriage, means for simultaneously swinging said supporting bars outwardly into substantially horizontal position under the frame on the carriage to receive the rear end of the sheet, and a pair of grippers carried by said oscillating frame for gripping the sheet on the supporting bars carried thereby. I

12. In a machine of the character de scribed, the combination of a reciprocating frame for supporting the front end of a sheet, said frame being open at the rear and being adapted to allow the rear end of the sheet to hang down from it, an oscillating delivery frame, a pair of supporting bars carried by said delivery frame and movable thereon, means for swinging said frame up to a position under the carriage, means for simultaneously swinging said supporting bars outwardly into substantially horizontal position under the frame on the carriage to receive the rear end of the sheet, and means whereby said oscillating frame is lowered with the sheet on said supporting bars and said supporting bars re versed during the lowering motion. 7

13. In a machine of the character de' scribed, the combination of a frame mounted to oscillate on ahorizontal axis, a shaft carried by said frame at a distance from said axis, a frame pivoted on said shaft and provided with supporting bars for a sheet of paper, a wheel fixed with respect to said pivoted frame, and a belt passing over said wheel and having its ends fixed, whereby as the oscillatable frame moves about its pivot the wheel will be turned by the beltand said supporting bars swung about the axis of the shaft.

14. In a machine of the character described,- the combination of a frame mounted to oscillate about an axis, a shaft parallel with said axis mounted thereon, sheet supporting bars on said shaft. a sprocket wheel 7 fixed with respect to said bars and mounted to turn on the axis of said shaft, a chain passing over said sprocket wheel, one end of which is. connected with a fixed art of the machine, and a spring connecting the other end of the frame with a fixed part of the machine, the two ends of the chain being located on opposite sides of said oscillatable frame, whereby as the frame swings the sprocket wheel and sheet supporting bars will also turn about said shaft as a center.

15. In a machine of the character described, the combination of an oscillating frame, a pair of supporting bars carried by said frame and capable of swinging about an axis thereon, a wheel fixed with respect to said sheet supporting bars, and means for turning said wheel on its axis as the frame oscillates, said means being operated by the movement of the frame.

16. In a machine of the character described, the combination of an oscillating frame, a pair of supporting bars carried by said frame and capable of swinging about an axis thereon parallel with the axis on which the frame swings, a wheel fixed with respect to said sheet supporting bars, means for turning said wheel on its axis as the frame oscillates by the movement of the frame, a pair of grippers pivotally mounted with respect to said bars for gripping a sheet thereto, and means operated independently of said frame for swinging the grippers.

17. In a machine of the character described, the combination of an oscillating frame, a pair of supporting bars carried by said frame and capable of swinging about an axis thereon, a wheel fixed with respect to said sheet supporting bars, means for turning said wheel on its axis as the frame oscillates, said means being operated by the movement of the frame, a shaft supported by said bars having a pair of grippers thereon for gripping a sheet to the bars, an eccentric stud on the end of said shaft, a driving shaft having means for oscillating said frame, and means on said driving shaft for controlling the oscillation of said eccentric stud and the operation of the grippers.

18. In a machine of the character described, the combination of an oscillating frame, a pair of supporting bars carried by said frame and capable of swinging about an axis thereon parallel with the axis on which the frame swings, a sprocket wheel fixed with respect to said sheet supporting bars, a chain for turning said wheel on its axis as the frame oscillates, whereby said bars are operated by the movement of the frame, a shaft oscillatably mounted with respect to said bars having a pair of grippers fixed thereon for gripping a sheet to the bars and provided with an eccentric stud, a driving shaft, means connected with said driving shaft for swinging the oscillatable frame, a link motion carried by the oscillating frame, means pivoted on the axis of said frame for operating the link motion, said means being controlled from said driving shaft, and a friction device operated by the link motion and connected with said eccentric stud for operating the grippers.

19. In a machine of the character described, the combination of a shaft, a frame pivoted on an axis parallel with the shaft, means connected with said shaft for oscillating said frame, a pair of sheet supporting bars carried by said oscillating frame, a shaft oscillatably mounted with respect to said sheet supporting bars and movable therewith and having a pair of grippers thereon, a link motion supported by said frame, means connected with the first named shaft for operating the link motion, an arm pivoted on said oscillating frame and connected with the link motion, a pair of disks mounted to oscillate with the arm, a disk mounted between the first named disks, friction means between the last named disk and the other two, an arm projecting from the central disk, and a link connecting said arm with the oscillatable shaft for operating it.

20. In a machine of the character described, the combination of a shaft, a pivoted frame, means connected with said shaft for oscillating said frame about its pivot, a pair of sheet supporting bars carried by said oscillating frame, a shaft oscillatably mounted with respect to said sheet supporting bars and movable therewith and having a pair of grippers thereon and an eccentric stud, a link motion, means connected with the first named shaft for operating the link motion, a pair of disks connected to oscillate with the link motion, a disk mounted between the first named disks, friction means between the last named disk and the other two, an arm projecting from the central disk, a link connecting said arm with the eccentric stud on the oscillatable shaft, and a stop pin on the oscillatable shaft for engaging the last named link and limiting the motion of the grippers.

21. In a sheet delivery device, the combination of an oscillatable frame, sheet supporting bars pivoted thereon, means for swinging said bars on their pivot as the frame oscillates, a pair of pivoted grippers on the frame engaging said bars, and frictional means for holding the grippers against said bars so that the turning motion of the bars tends to keep the sheets gripped and for holding the grippers open at a later time.

In testimony whereof I have hereunto affixed my signature.

JOHN E. WOODBURY.

Images