US1664960A

US1664960A - Convertible oscillating rotary feeder

Info

Publication number: US1664960A
Application number: US110701A
Authority: US
Inventors: Aldrich Lester Kyle
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-05-21
Filing date: 1926-05-21
Publication date: 1928-04-03
Anticipated expiration: 1945-04-03

Description

April 3, 192s.

L. K. ALDRICH CONVERTIBLE OSCILLATIG ROTARY FEEDER Filed May 2l 1926 e sham-sheet 1 me/nio@ alito/www L. K. ALDRICH VAmal 3, 192s. 'N ifisso CONVERTIBLE OSCILLATING ROTARY FEEDER Filed May 21. 1926 6 Sheets-Sheet 2 April 3, 1928. 1,664,960 L. K. ALDRICH CONVERTIBLE OSCILLATING ROTAIRY FEEDER Filed May 21. 1926 6,Sheets-Sheet 3 a@ j@ @Q2/y attenua,

April 3, 1928.

L. K. ALDRICH CONVERTIBLE OSCILLATING ROTARY FEEDER Filed May 2l. 1926 6 Sheets-Sheet 4 y lL. K. ALL-)RECH CONVERTIBLE OSCILLATING ROTARY FEEDER Filed May 21. 1925 NNI L. K. LDRECH GONVER'IBLE OSCILLATING ROTARY FEEDER Filed May 2l. 1926 6 Sheetshswe; 6

23m/vanto@ Kaw/fraai@ m im@ www@ Patented Apr. 3, 1928.

' UNITED .STATES LESTER KYLE ALDRICHL' OF SIDNEY, OHIO.

CONVERTIBLE OSCILLATINGBOTARY FEEDER.

Application filed May 21, 1926. Serial No. 110,701.

The invention relates to a convertible oswithin the scope of the claims, may be recillating rotary feeder.

The object of the present invention is to improve the construction of automatic feeders forsheet material more especially that shown and described in Patent N o. 1,546,184, granted to me July 14, 1925, and to provide a simple practical and eiiicient automatic feeder of comparatively inexpensive construction capable of operating either as a rotary feeder or as an automatic feeder of the oscillating type with comparatively little change.

rlhe oscillating type of feeder cannot be run faster than the machine to which it is attached and which it feeds as it is dependent o'n the ymechanical movements of such machine for its operation. rlhe rotary type of automatic feeder can be run at variable speed-s by simply varying the ratio of the driving mechanism. This type of feeder has the advantage over the oscillating type in feeding machines which do not requirev time7 such as buckle folders, perforating and ruling machines and with the shorter length of sheets the feeder can be speeded up to feed the sheet-s to the full capacity of the ruling machine or other machine to which the sheets are fed.

Another object of the invention is to provide means to thoroughly wind the sheet before attempting to pull. it of the stack or pile and also to equip the feeding machine with means for controlling the vacuum separately on winding arms which lift and wind the sheet, and a pull off nozzle which carries the sheet from the stack or pile to the roll which completes the feeding operation so that with light porous stock very little vacuum may be used in picking up the sheetand an additional vacuum may be employed t pull the sheet ofi' the pile after the sheet has been picked up and winded.

The combination feeder makes it possible to provide a feeder that. can be attached. to any type of machine requiring an automatic feeder.

lVith these and other objects in view, the. invention consists in the construct-ion and novel combination and arrangement of parts hereinafter fullydescribed, illustrated in the accompanying drawings and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion and minor details of construction,

sortedto without departing from the spirit or sacrificing any of the advantages of the invention.l

In the drawings:

Figure 1 is a side elevation of a combination automatic feeder constructed in accordance with this invention and shown arranged as a feeder of the oscillating type.

Fig. 2 is a similar view of the opposite side of the'machine.

Fig. 3 is a plan viewof the same. v

Fig. 4 is an enlarged detail longitudinal sectional view of the upper portion of the machine illustrating the arrangement of the winding arms and the pull off nozzle and the cam mechanism for controlling the operation of the same.

Fig. 5 is an enlarged plan view of a portion of the machine.

Fig. 6 is an enlarged detail sectional view of the air valve.

Fig. 7 is a detail view of one of the pepper box dials or disks for regulating the vent passages.

Fig. 8 is a detail side view of the pull off nozzle.

Fig. 9 is an edge view of the same.

Fig. 10 is a detail view of one lof the winding arms.

Fig. 11 is a side elevation showing the machine arranged as an automat-ic feeder of the rotary type.

Fig.-12 is a similar view showing the upper portion of the opposite side of the machine.

In the accompanying drawings in which is illustrated the preferred embodiment of the invention, the combination automatic feeder comprises in its construction a pull off nozzle 1 consisting of a disk adapted to be oscillated whenthe machine is arranged as a feeder of the oscillating type capable also of being continuously rotated to provide a feeder of the rotary type. The pull off nozzle is suitably fixed to a rotary shaft 2 journalled in suitable bearings in the sides of the .frame 3 of the machine and provided at one portion of its periphery with an arcuate series of suction mouths 4 for successively operating on the uppermost sheet 5 of a stack to pull the sheet oif the stack and carry the same to a pull off roll 6 and rubber covered spools 7 which are arranged above the pull ofi' roll and which cooperate with the same to complete the feeding operationand lll) A the automatic feeder is associated asclearly explained in the aforesaid patent. The su'ction mouths as ex lained in the aforesald v vpatent are arrange at regular intervals and are connected by assages or ducts 8 with lateral ports 9 w ich are adapted to be brought successively into register with an outlet or aperture of an air passage 10 carried by an air arm 11. The pull ofr` nozzle is also provided with a curved slot 12 arranged concentric or in circular alignment with the arcuate series of orts 9 and adapted to be brought into register with the outlet of the passage 10 for destroying the vacuum during a portion of the revolution of the pull off nozzle when thel machine is continuously rotating and operating as a rotary feeder. One end of the curved slot is spaced from the arcuate series of ports to provide an intervening imperforate surface 13 which is adapted to close or cover the outlet of the passage 10 during a portionof the movement of the pull 0H nozzle while the machine is operating both as a feeder of the rotary type and as a feeder ofthesoscillating type to cut off the suction fronrgtlie noz'-V zle and throw the full suction on onefor more winding arms 14 which first engage the uppermost sheet 5 of the stack and then lift the same and move the edge of the sheet backwardly as illustrated in dotted lines in Fig. 4 of the drawings to produce an undulation in the sheet for winding the same in the manner explained in the aforesaid patent and similar to a pressman when winding a .sheetby hand. During this winding operation the sheet is lifted and moved from the position illustrated in full lines in Fig. 4 of the drawing to that shown in dotted lines. The pivotal axis of the winding arms as hereinafter fully explained is located a considerable distance labove the stack of the sheets to cause the winding arms in their upward movement to move backward simultaneously approximately iive-eighths of an inch which is ample to effect theoperation of winding the sheet and separating the uppermost sheet from the stack. The winding arms also cooperate with means for discharging compressed air against the stack as fully explained in the aforesaid patent.

The winding arms 11 are suitably mounted on a transverse pivot shaft 15 mounted in suitable bearings in the sides of the frame 3 of the machine and carrying a cam actuated lever arm 16 and a valve operating arm 17. The winding arm 14 is approximately L- shaped and is secured at one end to the transverse pivot shaft 15 and is provided with a hollow or tubular portion 18 arranged approximately at a right angle to the portion which is attached to the pivot shaft. The

hollow or tubular portion 18l which forms a passage for the air extends downwardly and which is adapted to engage the uppermost sheetof the stack at the forward edge thereof and lift the same as before explained. The winding arm is interiorly threaded at the upper end'of the passage v19 for the reception of a threaded nipple 20 which forms a hose connection for connectin g a flexible hose to each of the winding arms.

The cam actuated lever' arm 16 which is located at one side of the machine adjacent to the frame is provided at its outer or cam engaged end with a roll 22 which is mounted on a suitable journal 23 and which bears upon a rotary cam 24.- The journal is preferably in the form of a screw threaded into the arm 16 as indicated at 24 in Fig. 5 of the drawings and the roll rests upon the cam 24 at the center of the top thereof as clearly illustrated in Fig. 4 of the drawings4 and as the winding arms 14 and the

arms

16 and 17 are rigidly secured to the pivot shaft 15 by screws or other 'suitable fastening devices there is sufcient weight to cause the roll to press firmly against the cam and move the cam-actuated lever arm in accord-ance with the contour thereof. The cam is provided with a cut out portion or recess 25 forming a cam face for actuating the arm 16 for raising and lowering the winding arms to carry the same to the stack and to lift the uppermost sheet thereof and wind the same. The remaining portion of the peripheral surface of the cam is circular and maintains the winding arm in an elevated position while the pull off nozzle is operated to pull off the sheet and carry the same to the and the rubber covered spools.

The arm 17 which operates the air valve is located exteriorly of the frame of the machine at the opposite side of that at which the cam actuated lever arm 16 is arranged and it is approximately L-shaped and extends downwardl from the pivot shaft 15 and longitudinaly of the side of the machine to a point adjacent an air valve 26 provided withl a cut off piston or movable valve member 27. The air valve consists of a body provided with .a main longitudinal passage 28 and a smaller longitudinal passage 29. The valve is preferably arranged in a vertical position as shown and the passages 28 and 29 are vertical. The lower end of thevertical longitudinal passage 28 is connected with a main suction hose 30 by a nipple or hose connection 31 which is threaded into the lower end of the passage 28 and a suitable hose connection or nipple 32 is threaded into the upper end of the main longitudinal passage 28 and for the attachment of a hose 33 which is connected with the suction nozzle 1 through the passage of the air arm 11. The smaller longitudinal passage 29 has threaded into its uppull ott' roll ISU per end a nipple or hose connection 34 which receives a hose 35 extending to one of the winding arms. The hose 36 extends to the other winding arm and is connected by an L-shap'ed nipple or hose connector 37 which is threaded at one end into a transverse pas-l that the entire suction will be on the wind-A ing arms. The suction which may be made either light or heavy to suit the Character of the stock being fed by the machine is regulated by means of pepper box dials 39 and 40 consisting of disks each provided with a plurality of apertures 41 of different sizes adapted to be brought into register respectively with

transverse vent passages

42 and 43 extending from the exterior to the longitudinal passages 28 and 29 as clearly shown in Fig. 6 of the drawings. Each pepper box dial is mounted on a pivot 44 consisting of a screw which passes through a central opening 45 in the perforated disk which has disposed on it a coiled spring 46 which is interposed between the head of the screw and the outer face of the disk for pressing the same against the body of the l air valve. The body of the air valve is provided at the

vents

42 and 43 with smooth fiat circular faces 47 and 48 to receive the disks which constitute the pepper box dials. The disks 'are adapted to be rotated to bring any one of its openings into register with the

vent passages

42 and 43.

The cut ofi' piston or movable valve member 27 which is cylindrical is mounted in the lower portion of the bore or passage 29 and it is movable from the position illustrated in full lines in Fig. 6 of the drawings to the dotted line 49 in the said figure to close the passages leading to the winding arms for cutting off the vacuum from the winding arms to throw the full force of the vacnum into the hose extending from the main longitudinal passage of the air valve to the pull o nozzle. The cut oli' piston is reciproeated in the valve chamber passage 29 of the air valve by the arm 17.

The air arm is provided with a smooth fiat bearing surface to fit against the pull off' nozzle and this surface is preferably formed by a wood bushing 50 saturated with oil to form a suction Contact member but any other suitable construction may of course be employed. The bushing 50 is mounted in a metal sleeve 51 carrying a nipple or hose connection 52 to which is connected the hose 33 extending from the nipple 32 of the air valve to the air arm. The sleeve 51 provided with a stem 53 and a coiled spring 54 is arranged on the stem at a recess 55 in the end of the bearing arm and is interposed between one wall of the recess and the bearing sleeve for yieldably maintaining the wood bushing in contact with the pull off nozzle. The construction of the wood nozzle and the 'spring actuated sleeve is substantially the same as that shown and described and claimed in an application filed by me February 23, 1926, Se.- rial No. 89,875. The air arm 11 is fixed by a. 'screw or other suitable fastening device to a transverse rod or shaft 56 on which are mounted the arms 57 which carry the rubber covered spools 7 which cooperate with the pull oft' roll 6.4 The rubber covered spools are constructed and arranged substantially as shown and described in the aforesaid patent. v

The approximately L-shaped valve operating arm 17 is connected to the lower end of the cut 0E piston by a pin or pivot 58 and it is provided adjacent to the pin or pivot 58 with a laterally extending pin 59 arranged to operate a pivoted valve 60 mounted on-the exterior of the valve body and arranged to cover and uncover a port or opening 61 in the air valve. ylhe pivotedvalve member 60 consists of a plate having angularly related portions and mounted at its angle on a pivot 62 preferably consisting of a screw as shown and provided at its outer end with a head and having a coiled spring 63 interposed between the head of the screw and the movable valve member for creating the necessary pressure to maintain the desired Contact between the pivoted valve member and the valve body. One arm or portion of the movable valve body is arranged to cover and uncover the said port or opening 61 and it slides or swings to and from its closed position and its other arm is connected with a crank disk or wheel 63 by means of a link 64 pivoted at. one end to the crank membe'r or wheel by a wrist pin 65 and provided with a longitudinal slot 66 receiv ing a pin or pivot 67 mounted on one end of the movable valve member 60. The pin or pivot 67 operates in the slot and the crank element 63 is adapted through the rotation of the cam shaft 2 to move the valve member 60 to its open position for destroying the vacuum and the laterally extending pin of the arm 17 is adapted to enga-ge the movable valve member for actuating the same to move the valve member to its closed y position for restoring the: vacuum as the arm 17 and the cam-actuated lever arm arrive at their lowermost position to provide the necessary vacuum for the winding arms as the latter are lowered to come in contact with valve member by the laterally extending pin of the arm 17. The air valve is also provided with a throttle valve consisting of av port or opening 68 and a pivoted cam operated valve lever 69 pivoted intermediate of its ends on a pin or screw 70 and maintained in proper frictional contact with the valve body by a. coiled spring 71. The Valve lever 69 is adapted to be operated by hand to cover and uncover -the port or opening 68 for .destroying and restoring the vacuum so that the feeding of the machine may be stopped and started as required.'

The main suction hose 30 is connected with a rotary vacuum pump 72 and the pull of nozzle is reversely rotated or oscillated b means of a pinion 73 mounted on a cam sha t and meshing with a rack 74 arranged at the upper end of a vertically .reciprocating bar 75 extending to the lower portion of themachine and connected at its lower end by a suitable pivotwith a crank armw 76 of a transverse crank shaft 77 journaled in suitable bearings of the frame of the machine and provided at the opposite side thereof lwith an upwardly extending crank arm 78 designed to be connected with the mechanism of the press or other machine to be fed by the automatic feeder so that the automatic feeder will operate in conjunction with the said press or other machine and at the speed thereof.` The crank arm 76 extends approxn'iately in a horizontal direction from the shaft 77 and is moved upwardly and downwardly to reciprocate the rack bar 75 when the arm -7 8 is oscillated by the press or other machine.

Thestack of sheets is arranged upon a vertically movable table 79 constructed substantially the same as that shown in the aforesaid patent with the Aexception that the mechanism for elevating the table automatically is operated by an elevating lever 8O fulcrumed intermediate of its ends at 81 and pivotally connected at one end with the rack bar and at the other end with the vertically movable bar 82 of the ratchet mechanism. When the machine is arranged as an oscillating feeder as illustrated in Fig. 1 of the drawings the elevating mechanism and thel feeding mechanism are actuated by the printing press bed lever or the mechanism of any other machine to which the feeder is attached. The link or bar 82 corresponds with the slotted link of the ratchet mechanism of the aforesaid patent and as the particular construction of the ratchet mechanism and the means for mounting and transmitting motion to the vertically movable table 7 9 are substantially the same as that shown and describedin the aforesaid patent a detail description and illustration of suchV mechanism in the present application is ldeemed unnecessary.

The rotary suction fan 72 is driven by an electric motor 83- which is connected with the rotary suction pump by a belt 84 and

pulleys

85 and 86 but any other suitable means may of course be employed for transmitting motion from the electric motor to the rotary suction fan which as explained in the aforesaid patent discharges into a tank 87 which supplies the compressed air for discharging upon the stack as fully explained in the said patent.

The stack of sheets is arranged on .the table between abutments 88 and 89 and as the suction nozzle rotates in the -op osite 'direction to the arrow in Fig. 4 of the drawings the imperforate or dead surface 13 closes the opening in the wood bushing of the air arm as the rotary suction disk nears the limit of its backward movement the cam has lowered the cam actuated lever which is attached to the pivot shaft carrying the winding arms and the cut oil piston arm 17. As the cut oif piston arm moved downwardly the pin 59 projecting laterally from the said arm 17 closed the valve 60 covering the exico suction nozzle 'is now reversed and the suc-i tion nozzle moves 1n the opposite direction, y

lifting the winding arms which move in a backward direction as they raise to the level of the bottom of the rotary suction nozzle. When the winding arms have moved up` wardly to this point the cut off piston arm 17 is also lifted, raising the cut off piston to the dotted line position shown in Fig. 6. The suction nozzle which has been rotating with the cam has arrived at the position where just as the piston cuts of the suction from the winding arms the first port of the arcuate series has come into register with the port or opening in the wood bushing, putting all of the suction on the hose extending from the valve to the suction nozzle. As the vsuction nozzle rotates it pulls the sheet from theipile and the sheet passes between the pull oif roll and the rubber covered spools. As the suction nozzle reaches the limit of its forward Vrotation the eccentric element or disk 63 has pulled upon the valve 60 and uncovered the exhaust port 61 thereby rendering the suction ports inactive on the nozzle as the same rotates backwardly. Also the winding arms are inactive when descendpin 59 closes the valve 60 and restores the vacuum when the winding arms are in position to pick up the next sheet.

To convert the oscillating or reversely rotating feeder into a continuously rotating feeder the slotted link or connection 64 is remove-d and `the valve is closed. The pinion 73 and the rack bar 75 are then removed and the pinion is replaced by a pulley 88 or other rotary element and the elevating lever is connected by a link or connecting rod 89 with a wrist pin 90. The pulley 88 is designed to be operated by a belt but sprocket gea-ring may of course be employed and the rotation of the sprocket wheel 88 will continuously rotate the suction nozzle or disk in the direction ofthe arrow in Fig. 4 of the drawings. No change is made in the cut off piston lever 17.

Referring to Fig. 4 of the drawings which shows the winding arms- Idown read to pick up the sheet, when the cam is in this position the arm 17 has caused the cut off piston to vdescend and the vacuum is on the winding arms owing to the fact that the rotary suction disk or nozzle has rotated beyond the end of the curved slot and the imperforate or dead surface 13 closes the outlet or port of the wood bushing. As the Winding arms lift the sheet and wind it, the cut off valve closes cutting off the suction from the winding arms and transmitting it to the rotary suction nozzle as the first port has rotated into register with the port or outlet of the wood bushing and the sheet is now pulled off the pile by the rotary movement of the suction disk or nozzle and the successive engagement of the suction mouths with the sheets. As the suction disk or nozzle continues to rotate the curved slot 12 comes yinto register with the port or opening ofthe wood bushing thereby destroying the vacuum on the air valve and the suction nozzle and winding arms. The rotary suction nozzle or disk continues its rotary movement and the rotation of the cam lowers the winding arms and when they are just at their lowest point the curved slot passes beyond the port or opening of the wood bushing and the vacuum is restored ready to pick up the next sheet. The backward movement caused by the arrangement of the pivot shaft with relation to the stack of sheets produces anundulatory and winding action upon the sheet as the winding arm raises it thereby separating it from the stack and enabling it to be pulled off the same by the operation of the rotary suction nozzle or disk. Any suitable means may be employed for rotating the pull off roll and also the rotary element 88 for imparting a continuous rotary movement to the pull off nozzle.

What is claimed:

1. A feeder of the class Adescribed including a suctionv nozzle mounted for movement oscillating movement, said lpull oft' nozzle beine' located above and spaced from a stack of slieets, means for actuating the pull-'off nozzle to partially rotate the same backwardly and forwardly, and oscillating means for lifting up a sheet and delivering thesame 'to the oscillating pull olf nozzle.

3. A feeder of the class described including a pull off suction nozzle mounted for movement on a fixed axis and located above and in spaced relation to a stack of sheets, means for actuating the pull-ofi` nozzle to partially rotate the same backwardly `and forwardly, and oscillating means for icking up a sheet and moving the same ackward and for forming an undulation in the picked up sheet and for delivering the sheet to the pull off nozzle.

4. A feeder of the class described including a pull off nozzle mounted for movement on a 'fixed axis and located above a stack of sheets, means for actuating the pull-off nozzle to partially rotate the same backwardly and forwardly, and oscillatin means for picking up a sheet and delivering the same to the pull off' nozzle, said oscillating means being mounted for movement on a fixed axis located above the stack a sutlicient distance to cause a backward movement of the picked up sheet to produce an undulation on the picked up sheet to wind the same. 4

5. A feeder of the class described including a pull off nozzle mounted for movement on a fixed axis and located above a stackof sheets and oscillating means for picking up a sheet and delivering the same to the pull off nozzle, said oscillating means bein mounted for movement on an axis locate above and in advance of the stack to cause a backward movement of the picked up sheet simultaneously with the upward movement of the sheet to wind the same as ,1' is delivered to the pull off nozzle.

6. A-feeder of the class described inclu l ing a pull off suction nozzle mounted fr movement on a fixed axis, oscillating means consisting of a pivoted suction arm for picking up a sheet from a stack and delivering the same to the pull off nozzle, and means forswinging the suction arm upwardly and downwardly.

7. A feeder of the class describedy including a pull off suction nozzle mounted for movement on a fixed axis, and an oscillating winding arm pivoted above a stack of sheets and in advance of the plull off nozzle and arranged to pick up a s eet and move the same backward andv upward to wmd the picked up sheet and dellver the same to the pull off nozzle.

8. A feeder of the class described including a pull off suction nozzle consistino` of a disk mounted for movement on a fixed axis and adapted for oscillating movement, means for actuating the suction nozzle to partially rotate the same backwardly and forwardly, an oscillating suction arm f or picking up a sheet from a stack and deliverinof the picked up sheet to the pull oil nozz e and means for swinging the suction arm upwardly and downwaidly.

9. A feeder of the class described including a pull ofi` suction nozzle consisting of a disk mounted for movement on a fixed axis and adapted for oscillating movement, an oscillating winding arm pivoted in advance of the pull off nozzle and arranged to pick up a sheet from a stack and move the picked up sheet backward to wind the same and deliver it to the pull off nozzle, means for swinging the winding' arm up wardly and downwardly. y 10. A feeder of the class described including a pull off `suction nozzle mounted for movement on a fixed axis, a cam moving with the pull off nozzle, oscillating means for picking up a sheet from a stack and delivering it to the pull ofl:I nozzle, and an arm connected with the said means and actuated by the cam for oscillating the said means.

11. A feeder of the class described including a pull off suction nozzle mounted for movement on a fixed axis, a cam moving with the pull ofi nozzle, an oscillating winding arm mounted for movement on a xed axis to pick up a sheet from a stack and wind the picked up sheet and deliver the same to thepull off nozzle, and a lever arm connected with the winding arm and en' gaged with and actuated by the cam.

12. A feeder of the class described including a pull off nozzle mounted for oscillating movement on a fixed axis, a cam moving with the said nozzle, an oscillatory winding arm for picking up a sheet from a stack and for deliveringit to the pull ofi' nozzle, a lever arm connected with the winding arm and actuated by the cam and controlling the oscillation of the said winding arm, and an air valve for controlling the suction on the winding arm, and means for operating the air valve simultaneously with the winding arm.

13. A feeder of the class described including a pull off nozzle mounted for oscillating movement on a fixed axis, a cam moving with the said nozzle, an oscillatory winding arm for picking up a sheet from a stack and for deliverin it to thepull off nozzle, a lever arm connecte with the winding arm and actuated by the cam and controlling the oscillation of the said winding' arm, and an arm connected with the cam actuated lever arm and actuated by the same for operating the air valve simultaneously with the winding arm.

14. A feeder of the class described including a suction pull off nozzle mounted for ro tation on a fixed axis, an oscillatory winding arm mounted for pivotal movement on a fixed axis for picklng up a sheet from a stack and delivering the sheet to the pull off nozzle, a cam rotating with the pull off nozzle, an air valve for controlling the suction of the winding arm, an oscillatory arm connected with the air valve and with the winding arm foi` operating the valve simultaneously with the winding arm, and a lever arm also connected with the winding arm and engaged with and actuated by the said cam and adapted to operate the winding arn and the valve actuating arm simultaneous y.

15. A feeder of the class described including a pull off suction nozzle mounted for movement on a fixed axis, an oscillatory winding arm also mounted for movement on a fixed axis and arranged to pick up a sheet from a stack' and deliver it to the pull off nozzle, an air valve controlling the suction of the winding arm, means for actuating the air valve and the winding arm simultaneously, and means for cutting off the suction from the pull off nozzle when the suction is on the winding arm.

16. A feeder of the class described including 'a pull ofl suction nozzle mounted for movement on a fixed axis, an oscillatory winding arm arranged to pick up a sheet from a stack and deliver the same to the pull off nozzle, an air valve having passages connected with the winding arm and the pull off nozzle and adapted to open and close the passage to the winding arm, means for 0perating the air valve, and means for simultaneously controlling the suction on the pull off nozzle. Y

17. A feeder of the class described including a pull 0E nozzle mounted for movement on a fixed axis, an oscillatory suction arm arranged to pick up a sheet from a stack and deliver it to the suction nozzle, a fixed air arm having -a pull off passage extending to the suction nozzle, means carried by the pull ofl' nozzle for controlling the suction passage of the air arm, an air valve for controlling the suction of the suction arm, and means for operating the air valve simultaneously with the suction arm.

18. A feeder of the class described including a pull off nozzle mounted for movement on a fixed axis, a cam moving with the pull o' nozzle, a fixed air arm having a suction assage extending to the pull ofi' nozzle, the atter being provided-with means for controlling the said suction passage, a pivoted shaft having a lever arm engaged with the cam, an oscillatory suction arm carried by the pivoted shaft and arranged to pick up a sheet from a stack and deliver it to the pull off nozzle, an air valve having passages connected with the suction arm and the said air arm and provided with a movable valve member for opening and closingfthe passage to the suction arm, and an arm also mounted on the said pivoted shaft and connecte? with the movable member of the valve fo actuating the same simultaneously with the oscillation of the suction arm.

19. A feeder of the class described including a suction nozzle mounted for movement on a ixed axis, oscillating means for picking up a sheet from a stack and .delivering the same to the rotary nozzle, and independent means for varying the amount of suction of the oscillatory means andthe rotary nozzle to enable a sheet to be picked up with a light suction and to be pulled off the stack with a heavy suction.

20. A feeder of the class 'described including a suction pull off nozzle mounted for movement on a fixed axis, an oscillatory Winding arm arranged to pick up a sheet from a stack and ldeliver it to the pull off nozzle, and independent means for varying the amount of suction of the pull ofi' nozzle and the oscillating pick up arm to enable the sheetto be pulled off the stack with a heavy suction and to be lifted from the stack with a lighter suction adapted to the character of lthe sheet.

21. A feeder of the class described including a pull 0E nozzle mounted for movement on a fixed axis, an oscillatory suction arm arranged to pick up a. sheet and deliver it to the pull off nozzle, a main suction tube, an air valve connected with the main suction tube and having passages connected with the pull off nozzle and with the oscillatory winding arm, said valve having a cut off piston arranged to open and close the passage to the suction arm, and an oscillatory arm movable with the suction arm and connected with the cut off piston for reciprocating the same simultaneously with the oscillation of the suction arm.

22. A feeder of the class described including a suction pull off nozzle, an oscillating winding arm arranged to pick up a sheet from a stack and deliver it to the pull off nozzle, an air valve having passages communicating with the Winding arm and the nozzle, and independent means for controlling the amount of suction in the said passages to enable the sheet to be pickd up with a light suction and to be pulled olf the sta-cl: with a heavy suction.

anism for elevating a table.

23. A feeder of the class described including a suction pull olf nozzle, an oscillating Winding arm arranged to pick up a sheet from a stack and deliver it to the pull off nozzle, an' air valve having passages connect- -ed with the pull off nozzle and the Winding arm and provided also with vent passages communicating with the said passages, and independent means for varying'the size of the vents formed by the said passages for enabling the winding arm to operate with a lighter suction than the pullroii' nozzle when desired.

24. A feeder of the class described including a pull ofi' suction nozzle, a plurality of oscillating suction arms yarranged to lift a sheet from a stack and deliver it to the suction nozzle, an air valve having a main passage communicating With the pull off nozzle and a plurality of passages communicating with the suction arms, said valve having means for opening and closing the said plurality of passages, and means for varying the amount of suction in the main suction passage and in the said plurality of passages to permit an independent adjustment of the suction on the pull off nozzle and the suction arms.

25. A feeder of the class described including a Vpull olf nozzle mounted for oscillatory movement on the fixed axis, an oscillatingsuctlon arm arranged to lift a sheet from a stack and deliver it to the pulloili nozzle, a cam moving with the pull off nozzle, a lever arm connected with the Winding arm and engaged with and controlled by the said cam, a pinion connected with the cam, a reciprocating rack bar meshing with the pinion and a crank shaft connected vvith the rack bar and adapted to be connected with the machine to be fed whereby a reverse rotary or oscillating movement is imparted to the pick up nozzle.

26. A feeder of the class described including a pull off nozzle mounted for oscillating movement on the fixed axis, an oscillating suction arm arranged to lift a sheet from a stack and deliver it to the pull off nozzle,acam moving With the pull o' nozzle, a lever arm connected With the winding arm and engaged with and controlled by the said cam, a pinion connected with the cam,l a reciprocating rack bar meshing with the pinion and a crank shaft connected with the rack bar and adapted to be connected with the machine to be fed whereby a reverse rotary or oscillating movement is imparted to the pick up nozzle, and an oscillating elevator lever pivotally connected with the rack bar and designedv to be connected with mech- 27. A feeder of the class described including a pull off nozzle for oscillating movement on a. fixed axis, an oscillating Winding arm arranged to pick up a sheet from a stackvand Vdeliver it to the pull off nozzle, a cam oscillating with the pull off nozzle, means forimparting a reverse rotary or oscillating movementto the cam and the pull off nozzle, a lever arm connected with the Winding arm and engaged with and actuated with the cam, an. air valve connected with the Winding arm, and af pull olf nozzle, and provided With an exhaust port and having a movable valve member for opening and closing the passage-to the Winding arm, a valve operating arm connected with the Winding arm and with the movable valve member, a pivotal valve member arranged to cover and uncover the exhaust port, means carried by the valve operating arm for engaging the pivoted valve member for moving the same to its closed position, and means actuated by the cam for opening the pivoted valve member.

y 28. A feeder of the class described including a pull 0E nozzle for oscillating movement on a fixed axis, an oscillating Winding arm arranged to pick up a sheet from a stack and deliver it to the pull otf nozzle, a cam oscillatng with the pull off nozzle, means for` imparting a reverse rotary or oscillating movement to the cam and the pull oii' nozzle, Ia lever armV connected with the Winding arm and engaged with and actuated with the cam, an air valve connected with the Winding arm, and a pull ofi' nozzle, and provided with an exhaust port and having a movable valve member for opening and closing the passage to the winding arm, a valve operating arm connected With the Winding arm and with the movable valve member, a pivotal valve member arranged to cover and uncover the exhaust port, a crank element rotatin with the cam a link member connected with the crank element and having a longitudinal slot, and a pivot carried by the pivoted valve member and operating in the slot.

29. A feeder of the class described including a suction nozzle mounted on a fixed axis for movement above and in spaced relation with a stack of sheets for advancing a sheet to pull the same from the stack, oscillating means for picking up a sheet and lifting the same to deliver it to the rotary suction nozzle, and means for varying the amount of suction on the oscillating means Without varying the action of the nozzle.

30. A feeder of the class described including a suction nozzle mounted on a fixed axis for movement above and in spaced relation Withl a stack of sheets for advancing a sheet to pull the same from the stack, oscillating means for picking up a sheet and lifting. the same to deliver it to the rotary suction nozzle, and separate means for varying the amount of suction on the nozzle and on the oscillating means.

3l. A feeder of the class described including a suction nozzle mounted on a fixed axis for movement above and in spaced relaton with a stack of sheets for advancing a sheet to pull the same from the stack, oscillating means for picking up a sheet and lifting the same to deliver it to the suction nozzle, and means for varying the amount nt suction on the rotary nozzle.

In testimony whereof I ailix my signature.

LESTER KYLE ALDRICH