US1306087A - turck and b - Google Patents

Description

F. M. TURCK AND B. 0. WHITE.

SHEET FEEDING DEVICE FOR PRiNTING PRESSES. APPLlCATiON TILED AUG.29 19w.

Paronmll 110 10, 1919.

9 SHEETS SHEET INVE/V T0165 A T7 0 IOVE V F. M. TURCK .AND B. C. WHITE. SHEET FEEDING DEVICE FOR PRINTING PRESSES.

APPLICAHQN FILED AUG.29. 19H.

Patented June 10, 1919.

9 SHEETS-SHEET 2.

F. M. TURCK AND B. 0. WHITE. SHEET FEEDING DEVICE FOR PRINTING PRESSES.

APPLICATION FILED AUG.29. 1917. 1,306,087; Patented June 10, 1919.

9 SHEETSSHEET 3.

A TTORNE Y F. M. TURCK AND B. C. WHITE. SHEET FEEDING DEVICE FOR PRINTING PRESSES.

Patented June 1(), 1919.

9 SHEETSSHEET 4.

APPLICATION FILED AUG.'29. 1917.]

INVEN TORS A TTORNEY F. M. TURGK AND B. C. WHiTE, SHEET FEEDNG oevms FOR PRlNTING PRESSES" APPLICATION FILED AUG.29. 1911.

Patented June 10, 1919.

- 9 sHEETS-SHEET 5 A4 TTORNEY F. M. T-URCK AND B. C. WHITE.

SHEET FEEDING DEVICE FOR PRINTING PRESSES.

APPLICATION FILED AUG.29.1917.

I Patented June 10, 1919.

9 SHEETS-SHEET 6.

1 [NVE/VTU/ffi;

I A TTORNEY r 5 NORRIS F515; cc vnsnmmau. u. c.

F. IVIVTURCK AND B. C. WHITE. SHEET FEEDING DEVICE FOR PRINTING PRESSES.

APPLICATION FILED ALIG.29. I917.

Patented June 10, 1919.

9 SHEETS-SHEET 1.

F. M. TURCK AND B. 0 WHITE; SHEET FEEDING DEVICE FOR PRINTING PRESSES.

' APPLICATION HLED AULZQV I911. 1 306,087. Patented June 10, 1919.

9 SHEETS-SHEET B.

zl'TTORNE Y INVEN TORS F.'M. TURCK AND B. 0; WHITE. SHEET FEEDING DEVICE FOR PRINTING PRESSES.

APPLICATWN FILED AUG.29. 1917.

Patented June 10, 1919.

9 SHEETSSHEET 9.

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FREDERICK M. TURGK AND BRUCE CLARK WHITE, OF NEW YORK, Y.

SHEET-FEEDING DEVICE FOR PRINTING-PRESSES.

Application filed August 29, 1917.

To all whom it may concern Beit known that we, FREDERICK \4. TURoK and BRUCE C. I/Vrrrrn, citizens of the United States, and residents of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Sheet-Feeding Devices for Printing-Presses, of which the following is a specification.

This invention relates to improvements in printing presses in which sheets are fed to a sheet carrier and particularly to such a type of printing press as is shown and described in Patent No. 1,146,039, dated July 13th, 1915, issued to Frederick M. Turck.

The object of our invention is to provide operative means for gripping a sheet which has been previously positioned by hand or by automatic means, advancing said sheet into position to be gripped by grippers upon a moving sheet carrier and transferring the sheet thereto, then returning the sheet gripping and advancing mechanism to its normal position to receive another sheet.

Another object of our invention is to provide means for feeding sheets at regular intervals into successive sheet carriers as for instance into every third carrier without interfering with the passage of the two intervening carriers in one or both of which a sheet may already be gripped.

Another object of our invention is to provide a sheet feeding means which shall be in actual engagement or contact with the sheetcarrier at the instant the sheet is transferred to the latter in order that each sheet shall be accurately positioned therein irrespective of the lost motion or wear of the operating parts or gearing.

The invention also includes certain details of construction hereinafter set forth.

In describing the invention in detail reference is had'to the accompanying drawings forming a part of this specification, wherein like characters of reference are used to designate corresponding parts throughout the several vlews and 111 whlch:

Figure 1 1s a general side elevation of a printing press with the feed mechanism at tached. Fig. 2 is a plan view of the same. Fig. 3 is a sectional elevation of the feed mechanism on line 11 of Fig. 13, showing the parts in the relative positions they would assume at the instant of gripping thesheet. Fig. 4 is similar to Fig. 3, except Specification of Letters Patent.

Patented June 10, 1919.

Serial No. 188,764.

on line 44 of Fig. 14 with the parts in the position assumed immediately before transferring the sheet to the carrier. Fig. 7 is a plan view taken on line 33 of Fig. 18. Fig. 8 is an enlarged detail of the front-registering. guide. Fig. 9 is a section of the same upon line 55 of Fig. 8. Fig. 10 is an end elevation of the same. Fig. 11 is a plan view of one end of the front-registering guide in partial section on line 66 of Fig. 10. Fig. 12 is an enlarged section of the nipper-bar on line 77 of Fig. 8. Fig. 18 is a transverse section of the driving end of the feed device on line 22 of Fig. 3. Fig. 14 is an elevation of a part of the feed-arm and connections as viewed from the feed board.

Referring to Figs. 1 and 2 numeral 1 designates'the bed-plate of the press upon which are bolted the frames 2 and 3. In these frames bearings are provided for the two plate cylinders 4 and 5 and the impression cylinders '6 and 7.

For imparting motion to the printing cylinders a shaft 8 is mounted in bearings formed on the rear frame 3 and in the floorstand 9, the shaft being provided with a power pulley 10 and a driving pinion 11, the latter engaging the intermediate gears 12, 12. The latter engage the intermediate gears 13, 13 which in turn engage the gearrings 14, 14 secured upon the impression cylinders 6 and 7. Gear rings15, 15 are secured one to each plate cylinder 4 and 5 and engage with the gearings 14, 14 of the impression cylinders 6 and 7, the gears. being of such proportions that the several cylinders of the printing couples will be rotated at a common rate of speed.

For advancing the work to be printed a sheet-carrier is provided, composed of oppositely-disposed annular toothed carrier rings 16, 16 rigidly connected together by seven cross-braces or sheet-carriers 17. The carrier rings are geared to the cylinders 6 and 7 by gear-rings 18.

The particularconstruction herein shown is that of a printing press, adapted to print is journaled in the flanged sleeve 21 which f latter is secured through an opening 22 in the arch frame 23 by a nut 24. To the outer end of the shaft 20 is keyed a pinion 25. This latter, meshes into the cam-gear 26, keyed to the cam-shaft 27. The gears 19 and 26 and pinion 25 are further secured to their shafts by nuts 28. The cam-shaft 27 is journaled in a bushing 29 in the frame 23 and extends to the opposite side .of the press where it is-also journale d in a bushing 30 in :the arch frame 31. The gearing is so proportioned that-the cam-shaft 27 will make one revolution for each revolution of the printing cylinders.

A cam 32 is secured by bolts 33 to thegear I 26. Upon the surface of this cam rides a friction roller34m0unted to revolve freely upon the pin 35 which latter is journaled in the radius-arm 36 and is firmly secured in the spring-rod 37 by the nut 38. k The radiusarm 36 is. pivotably connected to the archframe 23 by a pin 39 secured by the nut 4 The spring-rod 37 extendsupward through the eye block 41 in which it is free to slide.

The latter is formed with a roundshank 42' which is free to rotate in a hole in the rocker arm 43 in which it is retained by the nut 44., Upon a screw-threaded portion of the springrod 37 are nuts 45 and Washer 46; and between'this washer'andthe eye-block 41 is placed a spiral spring 47. vNuts 48 at the 7 upper end of the spring-rod 37 are screwed down against the top of the eye-block 41.

This arrangement of spring permits an adjustment of the operative length of the spring-rod 37 and permits it to yield when necessary as will hereinafter appear.

The arm 43 is provided with a hub 49 in which is tightly fitted andkeyed the rockshaft 50. This rock-shaft. is mounted in bearings 51 in the arch-frames 23 and 31 se-. cured by caps 52 which are bolted to the archframes by screws The arm 43 ex tendsupward and forward for operative connection with'the spiral spring 54. The latter thrusts at its lower end against the puppet head 55 of thespr-ing-rod 56 about which it is coiled. The head 55 is bored to fit freely upon the stud 57 which is rigidly secured in the'arch frame 23 bytheinut 58. An eye-block 59 is fitted to slide freely along the spring-rod 56 and thereby compress the spring 54. The shank 60 of the eye-block 59 is free to turn in a hole in the upper extension of the arm 43 in which it is retained by the nut 61. A nut 62 retains the head 55 of the spring-rod upon the stud 57. This spring is of sufficient tension to press the roller 34 downward upon therotating cam 32 at all times except when interrupted as will be described.

The rock-shaft 50 has rigidly keyed to it the rocker-arm 63. This'arm is swung forward or to theleft in Fig. 4 by the thrust of the spring 54 and is permitted to swing for; ward at the right time and rate of speed as controlled by the form of the depression 64.

in the rotating cam 32see Figs. 3, 4 and 6. This depression is such as to cause the arm 63 to start to swing forward from its posi tion of rest at the front ofthe feed board 65, as soon as a sheet-carrier 17 has passed. The arm 63 follows closely after the sheet-carrier, gains-upon it, and comes into contact with it, the bearing plates 66secured. upon rolling and sliding contact with appropriately curved abutment surfaces 67 at each end of the sheet carriers 17. The cam surface 64 is slightly relievedjto afford this con-,

tact. The surfaces 67' are provided upon each of the seven sheet earners as they-will each come into contact with the swinging feed arm in their order of sequence. This forward movement of the swlnging feed arm 63 coincides with that of the sheet carrier 17 for a sufficient time to transfer-the sheet to the latter whereupon its forward movement is arrested by the return curve of the cam 32 the swinging arm coming intoa combined which causes the arm 63 to finally swing to the right to the position shown in Fig,

ltis important that the'position .ofithef swinging arm 63 be slightly adjustable when in its extreme position to the right, also th-at lts position be taken with great accuracy and lndependently of weaigj'or lost motion of otherparts. To accomplish thisend have introduced movable stops 68: screwed into the cross frame 69' of the feed table 65.

Lock-nuts '70 are provided to secure the 7 stops intheir adjusted position. Preferably we provide leather or fiber cushions 71 in .the-contactface of these steps. To

stops itwas necessary to introduce the yield- .provide for the variable action of these ing spring 47, which yields only under the action of cam 32 when the movement of the arms 63 is arrested by. the'stops- Thus it ment may be obtained and maintained in the movement of the feed arms. f It will {also 7 be evident that the spring 47., in nnyiel-din'gly transmitting-the movement of the arms 63, is -provid'edwi-th a tensionconsiderably exceeding that of the spring 54.

The swinging arms 63 are preferably connected at their lower ends by an integralweb 72 of angle section which forms a part of i i will be seen that extreme nicety of adjustv the sheet nipping device, and extends across the machine coextensive with the sheet carriers. Below the web 72 is a clamping-bar 73 of angle section suspended by rods 74 to which bar 73 is firmly secured by nuts 75. Along the front edge of the bar 73 are upwardly projecting pegs 76. A square bar 77 extends between and through the arms 63 in which latter it is guided and confined by the caps 78 while free to move vertically therein. Into this bar the rods 7 4 are firmly secured by the nuts 79, thus forming a stiff rectangular structure of the bars 73 and 77 and the rods 74. The latter slide freely in holes in the lower ends of the arms 63. Spiral springs 80 encircle the rods 74 and thrust upward upon the bar 77, thus thrusting the pegs 76 against the bottom edge of the web 72 of the swinging feed arm. These pegs are preferably shod with rubber or other substance having a high coefficient of' friction; see Fig. 12. The square bar 7 7 projects beyond the arms 63 at each end and is rounded to form a running fit in a roller 81 at either end. The rollers 81 are engaged by the curved under surface of the arms 82.

This curved surface 83 is concentric with the center of rock-shaft 50 when the arms 82 are depressed. The arms 82 are keyed to the shaft 84. One of the arms 82 is extended to the left at 85 and is bored to fit freely upon the shank 86 of the eye-block 87- which latter is retained in the arm 85 by the nut 88. Through this eye-block passes the stem of the cam-rod 89 which is rigidly fiXed in the eye-block bv the nuts 90. These nuts provide means for adjustment of the movement of the arms 82. The cam-rod 89 is forked to slide upon a loose collar 91 upon the shaft 27, between the cam 92 and the collar 93, both of the latter being firmly secured to the shaft 27.

The cam-rod 89 has a projecting roller pin 94 rigidly secured to it'by the nut 95. Upon this roller pin a cam-roller 96 is fitted to revolve freely and is in contact with the face of the rotating cam 92. The periphery of the cam 92 is concentric throughout the major part of its surface, having a small portion depressed or flattened at 97. The effect of this depression is to lower the roller 96 and with it the rod 89, thus permitting the arms 82 to rise and with them the square bar 77, rods 80 and clamp-bar 73, thus nipping a sheet of paper at numerouspoints between the pegs 76 and the lower edge of cross-rail 72, the whole upward movement being effected by the springs 80, limited by the cam 92. This cam is so timed in relation to cam 32 that the sheet will be gripped by the nipping pegs 76'immediately before the feed arm begins to swing forward, and will retain their grip on the sheet until the grippers of the sheet-carrier 17 have closed upon the edge of the sheet with the parts in the positions shown in Figs. 4 and 5. At all other timesthe nipping pegs 76 are separated from the lower edge of cross-rail 72 thus .permitting the sheet to be drawn freely from the feed board 65 by the sheet carrier 17 while the feed-arm is arrested in. its forward movement and returned to its first position, as shown in Fig. 3. The nipping pegs 76 remain open for some time after the feed arm has returned to the position shown in' Fig. during which time a new sheet is being fed into the space between the feed arm and the nipping pegs.

To insure the uniform positioning of each sheet when fed into the feed arm we provide two movable and adjustable stops or fronteguidesin the path of the sheet, against which the adyance edge of the sheet is fed.

The front guide consists in a depending finger 98, see Figs. 8 and 9 having preferably a renewable toe-piece 99. The finger is secured to the lower end of the guide-lever 100 by screws 101 in slotted holes 102, permitting vertical adjustment of the finger 98. The lever is fulcrumed on the pin 103 in ears 104; which project from the block 105. The latter is free to be slid along the bar 106 and may be secured in any desired position thereon by the set screw 107 and 95' jam-nut 108. Through the upper part of this block is an adjusting rod 109 having a head 110, through which passes a pin 111. The latter also engages the forked upper end of the guide-lever 100. A spiral spring 112 in a recess in the block 105 tends to press the upper end of the guide-lever outward, while the knurled nut 113 draws it back, whereby the lower end 99 of the lever may be adjustably moved forward or back to increase or decrease the projection of the sheet beyond the nipping pegs 76 for purposes of registry. The knurled nut 113 may be locked by the jam-nut 114.

The bar 106 is fitted to slide up and down in recesses 115 in the arms 63, (see Fig. 11,) and is held therein by cap-plates 116 which are secured to the arms 63 by bolts 117. End-plates 118 are fastened to each end of the bar 106 by screws 119 to prevent its end-wise movement.

The guides 99 must be lowered to the position shown in Fig. 12 when the feed arm is the position shown in Fig. 3, in order to form stops for the sheet when fed to the guides. At all other times the guides are raised as in Fig. 9 to permit the forward passage of the sheet. To effect this movement we utilize the swing of the feed-arm 63 by hanging the bar 106 from a point eccentric to the center of shaft 50. At each end of the'bar 106 is a hanger-block 120 secured by'a set screw 121 thereto. Between upwardly projecting lugs 122 is pivotally' connected a block 123 upon pin 124. 130

Through a hole-in the block 123 passes the threaded end of a rod 125, provided with nuts 126 above and below said block, to secure the rod therein and to afiord adjusting means. At the upper end of rod 125 is formed an eye through which passes a pivotpin 127; This pin also passes through lugs 128 one on each side of the eye. The lugs are integral with a spanner 129 which is bored to fit freely upon the two shafts 50 and 84; which turn within it'but retain it in a fixed position; The pivot pin 124 will therefore described an arc whose center is pivot l-27 while the cross-rail 72 of the swinging arm will describe an arc Whose center is the center of shaft 50 thus pro ducing the relative movement of the lower end of the guide into and out of the-sheetpath as described. A collar 130 prevents the spanner 129 from moving along the shaft 50. Y

The sheet-carriers 17 are each'provided -with grippers operated in any approi ed manner, as by tumbler arms. These grippers remain open after a sheet has been re- 7 moved and deliveredtherefrom, and reach sheet.

the position .shown'in Figs. 4 and 5 before closing. The Fig. 6 the parts are in .a slightly earlier position with the grippers still open. A tumbler pin 131 for closing the grippers isshown in Figs. 5, 7 andl3.

The feed-board 6.5 is supported bvfranies 132 and is provided at its front edge with a'metal plate 133 which forms an extension of the feed-hoard. This plate is notched at 134 for. the nipping pegs 76 which rise through said notches when the sheet is nipped. When in the posit1on shown in Fig. '12"anuninterrupted surface ispresented upon which the sheetmay be. fed to the guides. v

From the above description it will be seen that one important advantage gained by this device lies in the fact that" the I feed mechanism is .at rest against adjustable frame stops and unaffected by the. moving parts when the sheet is being registered and gripped, this insuring a measure ofaccu-racy impossible to obtain ormaintain in sheet vfeeding devices, which are. under motion at the instant of gripping the sheet, or in de vices in which the sheet is moving at the instant of gripplng.

Another {advantage gained by this .ar-'

rangenient is the large percentageof time allowed for introducing and registering the This is important whenf printing rapidily, as the-percentage of sheets missed or inaccuratelvfed is reduced; proportionally as the time. allowed for-placing the Another advantage desheet is increased. rived from the mannerofgripping the sheet here-in shown is the accuracy of the grip ping {movement-which isat a right-angle to -tne plane of the sheet. A grip moving at any other than a right-angle will often shift a sheet slightlyjat the instant of gripping contact.

The transfer of the sheet from the feed: arm to the sheet-carrier is efiected While both elements are moving at the same rate of speed .and in contact with each other and uninfluenced by lost motion of parts or back-lash of gears. The instant or place of 'tion, arrangement and application without departing from the prlnclple and scope-of the invention.

WVhat. we claim as our invention ind'de sire tosecure Letters Patent is;

11-. In .a printing press a. grippencarrying feed arm; sheet-stops or registeringguides ad uStably mounted upon a verti cally movable slidesbar thereon; links from said slideba-r to fixed centers located which the fixed armswings.

'2. Ina printing press, a rotatablesheetcarrier; a movable sheet-feeder; sheet-guiding means carried by said feeder and ar- ,95 eccentric to the center of the shaft upon:

.100 ranged to receive a sheet in registeredjre lation' while the feedernis at rest; sheetclamping-means carried by said feeder;

means foroper-ating said clampingmeans to clamp a registened ,.sheet while said feeder is at rest; means for withdrawing said guiding meansa-fter the clamping action l is effected; {and means for advanclng said feeder and delivering the sheet .tesaid sheet-carrier.

3. In a println-g press, a rotatable sheetcarrier provided with bearing or abutment surfaces; a movable sheet-feeder provided w1th resilient operating means and an ranged to clamp theleadi-ng edge ofnthe means for advancing said sheet-feeder at a speed -,exceeding that of said sheet-carrier and'engage the sheet-feeder with the abut ments thereof for the delivery of the sheets of the sheet carrier.

In ;a printing of a fixed feed-tablegprovided with adjustable stops; a sheet-feeder arranged to receive a sheet from said feed-table; means adapted to effect a yielding engagement between said feeder and the adjustable stops;

of said feed-table to] receive the sheet; and means f delivering the sheet from said feeder. 1

press, the combination sheets while said feeder is atrest; and

5. In a printing press, the combination of a fixed feed-table provided with adjustable stops; a sheet-feeder arranged to receive a sheet from said feed-table; register guides carried by said feeder; means adapted to effect a yielding engagement between said feeder and the adjustable stops of said feed-table to receive the sheet; and means for delivering the sheet from said feeder.

6. In a printing press, the combination of a fixed feed-table provided with adjustable stops; a sheet-feeder arranged to receive a sheet from said feed-table; a sheetcarrier arranged to receive a sheet from said feeder; means adapted to effect a yielding engagement between said feeder and the adjustable stops of said feed-table to receive the sheet; and means for delivering the sheet to said carrier.

7. In a printing press, the combination of a fixed feed-table provided with adjustable stops; a sheet-feeder provided with registering guides and arranged to receive a sheet from said feed-table; a sheet-carrier arranged to receive a sheet from said feeder; means adapted to effect a yielding engagement between said feeder and the adjustable stops of said feed-table to re ceive the sheet; and means for delivering the sheet to said carrier.

8. In a printing press, the combination of a fixed feed-table provided with adjustable stops; a sheet-feeder arranged to receive a sheet from said feed-table; a sheetcarrier arranged to receive a sheet from said feeder; means adapted to effect a yielding engagement between said feeder and the adjustable stops of said feed-table to receive the sheet; and means adapted to effect a yielding engagement between said feeder and said carrier while the latter is in motion to deliver the sheet thereto.

9. In a printing press, the combination of a fixed feedtable provided with adjustable stops; a sheet-feeder provided with registering guides and arranged to receive a sheet from said feed-table; a sheet-carrier arranged to receive a sheet from said feeder; means adapted to effect a yielding engagement between said feeder and the adjustable stops of said feed-table to receive the sheet; and means adapted to effect a yielding engagement between said feeder and said carrier while the latter is in motion to deliver the sheet thereto.

10. In a printing press, the combination of a sheet-carrier; an abutment formed on said carrier; a sheet-feeder arranged to deliver a sheet to said carrier while the latter is in motion; and means adapted to effect a yielding engagement between said feeder and the abutment formed on said carrier.

11. In a printing press, the combination of a printing couple; a sheet-carrier arranged to deliver a sheet to said couple at a speed common with the printing speed; a sheet-feeder arranged to deliver a sheet to said carrier; a fixed feed-table provided with adjustablestops; means adapted to effect a yielding engagement between said feeder and the adjustable stops of said feed-table to receive the sheet; and means for delivering the sheet from said feeder to said carrier.

12. In a printing press, the combination of a printing couple; a sheet-carrier arranged to deliver a sheet to said couple at a speed common with'the printing speed; a sheet-feeder arranged to deliver a sheet to said carrier; a fixed feed-table provided with adjustable stops; means adapted to effect a yielding engagement between said feeder and the adjustable stops of said.

feed-table to receive the sheet; and means adapted to effect a yielding engagement between said feeder and said carrier while the latter is in motion to deliver the sheet thereto.

Signed at New York, in the county of New York and State of New York this 25th day of August, A. D. 1917. Q

FREDERICK M. TURGK. BRUCE CLARK WHITE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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