US1652172A - Sheet-feeding machine - Google Patents

Description

(Dec. 13; 1927. 1,652,152

H K KING v SHEET FEEDING UACHINB Filed Nov, 4, 1925 9 Sheets-Sheet 1 INVENTOR.

ATTORNEY.

' Dec. 13, 1927. r

. H. K. KING SHEET FEEDING "ACHINE Filed Nov; 4, 1925 9 Shets-Sheet 2 T H v INVENTOR." flfizdardfliiiig ATTORNEY.

Dec. 13; 1927.

H. K. KING SHEET FEEDING IIACHINE Filed Nov. 4, 1925 9 Sheets-Sheet 4 flawamznm'r BY ATTORNEY.

H. K. KING SHEET FEEDING MACHINE Dec. 13, 1927.

F iled-Ngv. 4.1 25 9 Sheets-Sheet 5 ATTORNEY.

\ v INVENTOR:

lifiwa dlf.

mum-N Dec. l3, 1927; I

1 H. K. KING SHEET FEEDING MACHINE Filed Nov. 1925 9 Sheets-Sheet 8 INVENTOR. li'owardliiliiy ATTORNEY.v

Dec. 13, 1927.

' 1 H. K. KING sum FEEDING MACHINE Fu d Nov. 4, 1925 9 Sheets-Sheet 9 I INVENTOR: Ezdardfi'. i

ATTO RNEY.

Patented Dec; 13, 1927.

UNITED STAT Es PATENT OFFICE.

HOWARD K. KI G; or FPHQILAYDEVLPHIA, PENNsYLvANIA, 'AssIeNon'ro CHAMBERS j BROTHERS, COMPANY; A GORPGRATION or. PENNSYLVANIA.

's Enr rnEnrNG MAcHiNE.

Y Application filed November sheet feeding machine commonly known :as

the 'continuousfeed type.

The,impr vem'ents are especially applicable to machines forfeeding sheets to a print ing-press,.although certain of the improvements are equally applicable to feeding sheets to folders'or similar devices.

.T he machine as a whole is similar, in most res eets to that described in in Patent No.

1,154,406ydated Sept. 21, 1915, which was shown as especially applicable to feeding sheets to a folding machine or similar device. V g

It is therefore believed to be unnecessary to describe in detail the entire 'm'achine which is fully illustrated and described'in said patent. Only such parts are described in the present application as are necessary to show the relationof the improvements herein described and claimed. i

The present invention comprises two sets of drop and feed'rollers, cooperating slowdown rollers and actuating and-driving means therefor; improvements in the as. rangement of the clamp and drag,"improve'- ments in the arrangement of the side guide, or registering device, means for adjustment of the control'of the feeding operatiomthe arrangement of thefront or press guides and means for assuring a square or true presen- 'tation of the frontedgeof the sheet, means for automatically stopping the press upon certain conditions means arbitrarily actuated for stopping the press, improved means for adjusting the several parts,and improvements in details of construction. 7

Referring to the drawings which illustrate merely by way of example, suitable means for the embodiment of my inven- Fig; 1 is a plan view showing the delivery and a portion of the feeder. l A

- Fig. 2is a right hand side elevation of'the feeder and delivery and a portion of the press. I W Fig. 2 is a side elevation on an enlarge scale, of thetail clamp and drag.

Fig. 2 is a rear elevationof same;

' in difierent. positions. M Fig. 22 sa S8Ct-1O11O11 'E111 enlarged scale 0111111622,.0f Fig. 19.

I is a left hand sideelevation of the 4, 1925. Serial No. 66,763.

delivery with the forward partof the feeder and-thefrear of the press shown.

. Fig. 4- is a righthand'elevation showing the drive and actuation mechanism of the slow-downs.

Fig.2 5 is a 'section' on lin s; .5 of .Fig. 1.

ig. 6 is an elevation of the slow-downdriving rollers shown in Fig. 4 on an enlarged scale. 1 r

Fig. 7,is an enlarged-detail of arm and Fig. Sis a plan View of one ofthe slow down rollers. a

Fig. 9 isa section on line 9, 90f Fig. 8. *Fig. 1Ov is a similar view asFi'gQ 9, with one partremoved and parts in a'slightly different position. 1

Fig. 11 is a similar view as'Fig. with therollers-in an elevated position.

F ig: 12 is a side elevation of' mechanism for actuating the side guide and for opening. and; closing thelslow-dolwn rollers; this viewalso shows position.

F 13 is alplan View ofthe left hand I portion of the parts shown in Fig. 12 on an enlarged scale.

Fig. 14 is aview similar to Fig..13, with parts in, a diterent position. 4

shown in Figs. 13 and .1 1.

Fig. 16. is a planview of end of side connectingrool. I f r Fig. 17 is a sideeleva-tion .of parts shownin Fig. 16.

guide control and tripping mechanism.

Fig 20 is-a sectlon of the a1r diaphragm shown in Fig. 19.

Fig. 21' is aj section of the feeding guide on line 21, 21 of Fig. 1, on an enlarged scale.

Fig. 21 is similar View showing parts showing the air passage and control.

Fig. 24 1s a section of a portion connected with themechanismshown in Fig. 19;

Fig. 25 is a section on line 25,25'of Fig. 19.

' Fig. 26 is an elevation of some of the parts shown in Fig. 19, in clifiierent positions,

secondfeed roller in closed.

Fig. 15 is 'a "side elevation of the parts- Fig. 18 is a section .on line 18, 18 of Fig.

ice

Fig. 27 is a view similar to Fig. 26, with some oi the parts in dili'erent positimis.

Fig. 28 is a section on line 28. 58 of Fig. 1..

Fig. .29 an elevation oi the feed roller shoivi'i in Fig. 2%.

Fig. 30 is a fragmentary section on an enlarged scale of parts shown in Fig.

Fig. 31 is a fragmentary elevation on an enlarged scale of other parts shown in Fig.

Fig. Silis an elevation on an enlarged scale of the end of connecting rod as seen on section 32, 232 of Fig. 5.

Fig. 33 a view similar to Fig. 32 parts in slightly dillerent position. a I

Fig. 3% is a section on line 34, 34E of Fig. 4:, on anenlarged scale.

Fig.8.} is a front elevation of the press feeding guide on an enlarged scale.

Fig. 36 is a section on line 36, 3G 01 Fig. 235.

Similar numerals refer to similar parts throughout theseveral views. a

It will be understood that the bank of sheets is delivered around the drum and operated upon by the combing wheelin the manner described in :said Patent No. 1,154,- 406. The front edge of the foremost sheet moves along the feed board to and over the steel blades at}, and passes between the first delivery drop rollers a7 and the feed rollers 48. See Figs. 1 and 28. The said drop and feed I'OllEI'S lXITlIlS case, become part ofthe feeder, whereas in theidevice disclosed in said Patent No. 1,154,406, the feeder does wi th not have any drop and feed roller, but uses the folder drop and feed rollers becon'ring a complete feeder only when attached to a folding machine. i l

The trip linger 49 or cut-out", shown in Fig. 28, operates to control a. pnelmnuic valve by rocking the supporting; shaft 51 in substantially the same way as thatldescribed in connection with Figs. 11. 12 andl i of said Patent No.1,15ah-l06, except that the method of mounting and adj ustment is difl'erent. The bracket 50 is mounted on the square shaft 51., by havingtwo adjacent faces, at right angles with each other, ongaging correspondinn :uljaccnt faces of the shaft and a stiti spring plate 52 secured .to bl'i'ltkti tit) engaging; a diagnmally opposite corner of the shaft as shown in said Fig. 28. This does away with the yoke and set-screw ltqlllltllwlH accordance with the former patout. The bracket 50 can be moved along the bar or shaft 51 to any desiredposition of adjustment and will be held firmly in said position of adjustment by the pressure oi said spring 52. The adjustment of the trip tin {1015 19 upon the bracket 50 is of great in1- portance in order to secure the properly timed pneumatic control. In accordance with the former patent this trip linger was adjustably secured tothe yoke by means of a slo and bolt. By such means it was ditengages the abutment 59 in the cylinder for 50. The outerendofrod 55 is threaded and provided with a knurled nut 57 which engages the outer end of the cylinder formation 56. The cylinder formation is open at the opposite end and forms a housing for the compression spring 58, one end of which mation 56 and the other end engages the end of the arm 54. so that the position of the outer end ottrip finger 49 may be adjusted with great relineinentby simply turning the knurled nut .57. It will also be notedthat the upper surfaccbO of theextreme outer end of trip linger 4t!) in substantially the arc ol. the outer periphery. of feed roller 48, and at a required distance from the underside. of said trip linger, so that when this surface (it) corresponds with the peripheral surface of the roller 48, the finger projects the required distance into the groove 61 of said roller 48,. to secure the normal actuation of the pneumatic device which it con. trols. This arrangen'ient provides a simple andeli'ective means for very accurate initial adjustment, and convenient means for moditying the said adjustment at wilLI The sheet is started and carried by the first delivery dropand feed rollers until .it is well under-control of the second delivery drop and feed roller. The second delivery drop roller 62; (see Fig. 3) is under the. sheet, with its feodroller (523 over the sheet. 'lhese (,lcli'veryrollers have the same surface speed as the lirst delivery feed rollers. They are closed tightly together toareceive the sheet, and act as carriers for the sheet, deliverinn it to the slmv-down rollers (34; and (1:3, Figs. 8 to ihand are located approximainly.halt-way between the first drop :and feed rollers and .lhc slow-downs.

.Thc lirstw drop-rollers drop to rlorilo the rollers at exactly the right time toutart the sheet; the sccoiul drop-rollers drop to open at exactly the right time to deliver the sheet to the slow-downs which are running aha. slower surface speed therefore the delivery must be just; right; if too slow in opening, thosheet would be buckled, if too quick in opening. the sheet, would be left for an intcrvail without positive control. j j j The lirstand secondset of drop and feed rollers and the slow-down rollers are shown in pairs. A description ofone pair will sufllce. .1; i

The action of the slow-downs is somewhat similar to the second (l1OP roller. 0

rcpt the drop or moving roller 65 on the ,meam

top. The drop roller is mounted on the end-of arm 66, pivotally mounted at'67, and

controlled by the helical spring 68 andby the flat angle spring 69. These rollers haVh three positions shown "on Sheet Figs shows them tightly closed to receive the sheet, the flat angle spring 69 givingthe heavy pressure. Fig. 9' shows the roller under the control of the light helical spring 68, which by means of the knurled thumb nut/'70, is adjustable and can be' nade very delicate, as the 'weight of the roller is very lightandisalso counterbalanced. 11 shows the rollers separated; they are in this position while the sheet; is being side guided.

e sheet 7 is carried element 251, which isclamped to the, shaft 113 by the set-screw252, having a flat end of ample dimensionfor engaging the flat portion of shaft 113 so as to insurethe exact angular position of theelement on the shaft.

This element being, laterally adjustable on said-shaft. The arm 112is-clamp'ed to the S sleevef250by. means of the cap 253 and- bolts 254 and 255. 'This cap 253 is secured in fixed position to element 251 by the bolt 256; It will thus be seen that by loosening bolt i and tightening bolt 255, the outer end of arm 112 will be adjusted downward, carryg ing the pivot point 67 with it, and conse* quently the spring 69 into increased pressure of contact with the pin257 on arm11-2, which causes increased pressure of engage-j ment of rollers 165 against rollers 64:, when.

the'parts are, in position shown, in 10, which position is secured by rocking the shaft 113 in the counterclockwise 1 direction,

This rocking actuationrofi shaft 113is se cured withthe side guidingjmechanism as follows: The cross-head 155 is reciprocated by the side guide cam 161 as hereafter described, The cross-head carries the pins 258. Shaft '113 is provided with arms 259 and 260; the latter being connected to spring 261. 1 To the outer end of arm 259 is pivotally secured the member 262 having a notch and an overhang ng fingerextending beyond the notch. This notch is adapted to engage a (so with the pin 258 in certain position of recip- 1 rocation of cross-head 155. r The action being to give shaft 113 the required rocking move ment to lift the rollers 65 as shown in Fig. 11,-pr1or to the Op ratlon upon the sheet engaging with the spring 69 secures the final i movement of arm 66 with shaft 113; The

arrangement is such that only a small part of the movement of the cross-head is utibest be described by referring to Figs.

lized to actuate shaf 11 Th s S t i O J trolled by sprin 261 and the spring movement is limited by the engagement of arm 263 (also secured to shaft 113) against shaft 264, and the action is such thatthe pin 258 is withdrawn from the notchin member 262 to enable the roller 65 to be lifted prior to' the action upon the sheet of the side guide mechanism. Y Y 1 It will also be noted that in Fig. 9, the slow-downjrollers are shown as engaging which has already been described. This condition is secured, just'prior to theopening movement, at the beg'inning of the withdrawal of pin 258from thenotch in memher 262, whereupon the first stage of the rocking movement of shaft 113 in the clockwise direction will causeithe elevation of pivot 67, whicliwill lift spring 69 away from the pin 257 so-that the arm 66 will now be under control solely of the light spring 68 which is attached at one end to spring 69 an'datthe other end to the arm 263, which is adjustable described.

The driving, of the feeder by the can 2, 3

b means of the nut 70 as above and 4:; the'smaller sprocket 190.. see Fig. 2., is on, thepress driving shaft 191, the larg ger '193is suitably geared with the angle shaft 194. In this angle shaft are included two universal joints 195v and a telescopic sleeve 196. The angle shaft194 is suitably geared within the housing; 197 with the cam shaft 198 of the feeder.

Cam shaft 198 is (see Fig. provided with very slight'pressure; the purpose of sprocket 192 is on a short shaft 193. Shaft with the gear 265, which drives gear 266,7

which rotates with gear 267. Gear 267 drives gear 268 which is on shaft 72 of the feed roller 48, see Fig.- 4. Shaft '72 provided with the gear 173, driving pinion 74: connectedto sprocket 7 5 carrying'chain 76 which drives the double sprocket 77, which is connectedby chain 78, to the sprocket 79,

see Fig. 1, which is on shaft 81 of the sec ond feed roller 63. Shaft '81 also carries sprocket which is connected by chain 82 running over idler 83 and driving sprocket i 811-. Sprocket. 84 is mounted in sleeve 85, see

Fig. 3ft, which carries the pinion 86 and also thegear wheel 87. This sleeve is mounted on the sleeve 88 which forms a part of the housing 89 and is supported by 7 housing 89 carries the stud 91 on which is of the side guide mechanism; The pm 269 j mounted the gear wheel 92 meshing with plnion 86; On thehub of gear wheel 92 is mountedthe friction wheel 93. The housing or ...d

mounted the friction wheel 00. It will thus he seen that sprocket 84- drives througlzh the gears 87 and 95 the high speed triction wheel 00. and, through the gcarstlti and 92. the low speed :t'riction wheel 03 (see Fig. (3). Shaft 01' carries the slowdown teed rollers 6-1;. On this shaft 9'? is mounted the friction wheel 08. This friction wheel 08 adapted to cooperate with the high speed friction wheel 0th or with the low speed friction wheel .Khdepcnding upon the position of housing 00, to give the slohwloivn teed rollers either a high speed or a low speed. Fig. 0 shows the elements in position tor high speed drive.

The housing; is given a slight rocking movement to aire this high spender low speed by the following mechanism.

Relrrrling to Fig. ehcani 103 mounted on shattlJS operatescani roller 104: on aria 2T1, pix 'oted at 27:2. and connected .at its lower end hy connccti nr rod 273 with man 105 secured to drop roller shaft 270. ()n shaft; 270 the arm 270. see liig'. .12, at the lower end oil? which attached the spring 275. On shaft 270 also mounted the sleeve 9177, see Fig". 1. which carries the drop roller arms 27 i. On this sleeve 27'? is also mounted the arm 278. A spring 279 having one enden {gagging arm 2-78, and the other endengaging arm 2T0, tends to separate said arms, and adjusting screw 200. having a shoulder engaging arm Q78. and its end threaded into arm 270. counteracts the said spring tension. By this means the :uljustinent between arm 105 on shaft 270, and the drop roller arm 271i on sleeve 277, is secured.

On arm 105 is provided the pin 281, Fig. 7, carrying the hlocl; 100 which is seated in the slot 282 of connecting! rod end 283, securedto the connecting rod 100. The other end of: this rod is secured to the rod-end 284, provided with the slot, 285, see Figs. 32 and 33, for the end of the stud 94;. ()n coniusctine rod 100 is provided the heavy compression spring 00, one end of which engages the statii'manv ahutl'nent 2%. The other end engages the end piece 28%. A lighter tension spring; l0ll is connected at one end with the stud i l and at the other end to the arm 1053. Fig. 5.

\Yhcn roller '104; is on the small diameter 01' cam i011. twinning; drop rollcrlll in contact with 't'ced roller 0;}, the hlock 10(3 moves to the right in slot.- 282 which permits the spring 00 to force the connecting rod 100 to the right, in Fin. l (or to the left as shown in Fig. 32) thereby acting on stud 9+1: to rock the housing SS) to bring higg'l'i speed friction wheel into engagelnei'it with friction wheel 98. When cam wheel 104 is slightly raised from the small diameter of cam 103. arin 105 is moved slightly to the left and block 100 is moved to the left to engage the end 107 of screw 108, which moves connecting rod 100 to the left in Ilig sA: and '7. This rcsultsin (annpressing spring and with drawing the rod away from stud 04;, as shown in Fig: heroines effective to rock housing St) to hring 33, whereupon the springflOl the low i-apeedtrietion wheel 90 into cngagewent with :lrietion wheel 08.

It will thus he soon that, (just as the sheet enters the slowdowns, the second drop roller releases its grip, and the sheet takes a re duced speed, (which the high speed of the slow-downs). alter which. as the sheet; nears the press guides 1520, the slo\\'-dow.us operate at slow speed. There are two illljllf lllllclllfi to time this change of speed at exactly the l.'l1e loose adpistahle piece 100, shown on the cam 103, is aLl'jllSlGd pram right instant.

Then, with the press and ticall; correctly.

the screw 108 is adjustsutlicient force to insure the sheet reaching and, tor an instant, heing held against the press guides.

The adjustable screw 108, which is providcd with the knurled head 108', is a very valnahle "feature hecausc it permits getting; a rchnedworking adjustment without the loss of production. It is entirely possible to operate the teeder without the use oft th s screw,

h v getting a very accurate zuljustnient oi the loose piece 109 on the ram 103. However, it is ohwons that nrore or less tune will he coi'isuined 1n getting, a satls'tzu-tory working condition as hoth press and :lecder must he stopped in order toinake the adjustment. It is usually desirahle to make a slight adjustment for each, (litlerent job, and with the use ofthe screw 108. the sheet can be hroug'ht sottl or w1tlr more firmness.-

against the guides. The choice depending on the character of the stock, size of sheets. and speed at which the press is o iierated.

Also in some cases, accuracyversus produclion. \Vith the use off this screw. the loose piece 10$) once ad' ustcd can he left alone.

it will thus he seen that the secmid drop 'red delivery to the press roller cant 103 controls the speed change,"

audthe side guide (211M 101 controls the pressure change and lilting ot the slowdowns.

It will he understmul that the sheet must he against hoth press guides for the press to continue in ope ation. A failure to reach one or both guides willcanse a nlake or break contact in a switclutlnis causing the motor to stop. also the press cylinder will he tripped and the brake applied. The press guides 120 can be seen in Figs; 1-3, 19,21 and in 35 and 30. Figs. 35and 36, being on a larger scale, show clearly the penduli un 122 projecting in the path of? the sheet.

ll hen the face 123 oi the pendulum l22prejects beyond the guide 129 as 'showninFigs.

'21'and'36, the arm 12 lof the pendulum will close the nozzle 125 This willresult in maintaining pressure-on a diaphragm head 7 126. When however, this face 123 is flush with't-he guide 120, the escape nozzle125 will be open, as shown inFig. 21, thus allowing the air to escape from one of'the small dithrough .aphragms 126 shown in Fig. 22,-Sheet 7. The

4 as shown in Fig. 21. theair pressure .will force the diaphragm piston in the'posltlon shown in Fig. 22, the piston rod131 acting as a latch under the trip arm 132 loosely mounted on the drop roller shaft 133. V This arm can be seen in Figs. 1, 3, 19,22, 27 and 26. In Fig. 1, this arm shows the project ing lug 13 1 which rests on the top of the spring arm 135; the spring arm 135"is secured to-the drop-roller shaft 133 in a fixed position. The drop-roller is operated I through-means of a cam arm 136 and cam 137 shown on the upper right hand, corner oi Sheet 1. This cam arm 136 is rigidly secured Fig; 22. In this position of the trip arm, the

pistons 126 are free'tov act, therefore when not under air pressure "they will bewitlu drawn by the helicalsprings 138 pushing on thereverse side of the pistoir lt is obvious that both of these pistonrods .131 must be withdrawn before the tripar1n"132 can 'follow the drop-roller down, 'andwhen'soheld up the three-way throw-out arm orelement 139, see Fig. 19, will be permitted to work; the upper or latch-end l ldpassing freely under the latch end-of the trip arm 1.32. When the sheet is against both feedingguides, both tor cuts out thecontrol' at the press-guides by means of lever 302, just long enough to present the first sheet to said guides.

of these pistons will be with'drawm-in this case the descending drop roller 47 will per.- mit this trip arm 132 to fall in front ofthe latch portion 140 otthe throwout* arm, thus preventing it from following its cam 1 11 further than the position shown in Figs. 19 and 27. It is given this amountof 'idle' motion before being intercepted in order to get a quick action when required.

Note the position of the cam 1 11 and the I antifriction roller 142 on the portion of the arm 139 projecting to the right. It is obvious the cam action has passed the necessarily slow part of the movement and is fullyu'nder way for quick action, when not I intercepted by the trip arm. Fig--27 shows moto 1'.

side from three to five times.

it intercepted, and also showshow the cam will gently engage it at the end ofthe period and; depress it ready for another s'tart- Beferring to Figs. 19, 26 and 27, the helical spring 1 13 pulls this portion of the arm 139 upwardly and in contact with the cam as shown in Fig. 26, except when prevented by the trip arm 132 as shown in Fig. 27. The 1 spring 1 14;, to the left, inthe abovementioned figures, .is on'e of the springs pulling '75 the .drop 'roller 17 down; there being two springs'in addition'to gravityfor this purpose. The vertical plunger 145 pivoted on "the left branch of the throw-out arm 139 is shown in Fig. 19, in contact with the pivoted arm 146, but has notdepressed it far enough;

for action. However in Fig. 26 the plunger tact, depending on the method of Wiring.

This in turn cuts the current from'the press The rod 148 which is connected to the arm 14:6, unlatches well known spring controlled mechanism common to this type of press feeder, not shown. One side ofthis applies the press brake, the other trips the press, 'so'that the type will not come in con.- tact with the cylinder; there being no sheet to receive the ink from the type. This mechanism may be called the trip box. There are two toot pedals provided for resetting it.

"Theoperat-ion issimilar to setting a heavy spring con-trolled trap, and the above described plunger 1&5 simply unlatches the double trap. The trip box levers are connected to the same brake and trip that are used when the press is't'ed from its regular feed board by hand both brake and trip being provided [With a foot pedal. This arrangement, being common to all makes of flat bed printing presses, is not shown.

The object othaving the press stopped in case a sheet fails to getsquarely'against bot-h press guides is to, prevent sheets out of register getting through withoutv being detected. lVith everything properly adjusted, the pressinay run for hours without stopping.

Tn starting the press and feeder the operafor printing the first side of the sheet, and the other side guide-1s used when pr nting the reverse side; although the reverse side is'fre'quently printed on a difierent press. In

color'lworl: the sheetmay beprinted on one The edge of the sheet selected for register must be used in all operations- The side guide used in this detail in these drawings.

the same cam being used for either side.

lifted in the same direction. .headis then given a halt turn.

Referring to Figs. 1,16, 14. and 15, as shown in Fig. 1, both side guides are mounted on the same shaft. The patent last re ferred to, will .show this feature in detail. The shaft gives motion to one guide only, the shaft sliding freely through the other guide.

w The long pinion 151 shown in Fig. 15, engages with the shaft 152, see alsol 1;; and 1-il;. :Teeth 15?, are cut in the. side of the round baror sha't't 152 for this purpose.

Referring to Fig. 1:3. it will .be noted that thepinion '161 extends tor a (anisiderable distance above the round shat t. ukraek 15 1, workingat rightangles to the round shaft 152, gives :motion throiiigh the pinion to this shaft, the rack being secured to the side of a small erosshead 155, the connecting rod 156 from this ert'iss-head 155 extending hack to rod end shown in detail in Figs. 16 and 17, and shown in assembly connected to a rock 11111157 in Fig. 12. Connected to the upper end of this rock arm 157. is a shorter connecting rod 158, which in turn is connected to the cam arm 159, having the cam roller 1 cooperating withthe cam 161.

'The spring-rod .162 and spring 163 serve, in

the usual way, to keep the roller in contact with the eaiu.

Fig. 13 shows the position of the rack 1541: when the right hand side guide is in use, and Fig. It shows its position when the left hand side guide is in use.

To change from one side to the other, the guideblock 164 is lifted from its pin 165. also the cross-head 155 with the rack 15-1 The eross- Figs. u; and 1'7 show the construction that permits this. The rod 156 is screwed into the rod end 166, audfitted to turn fairly free, the small pin 167 cooperating with the shoulder 16S l miting to halt aturn. A line thread is u. d for connecting rod 156 with end pi eee 166 and the ditterenee in the length of therod, one to half a turn, does not interfere with the two actuations performed by this rod. 1 i p The. patent last; above referred to shows how the upper or moving guide adjusts itself to position on the shaft.

After side guiding, the sheet is taken by the grippers in the usual manner; the first turn ot the cylinder, printing the sheet as the bed travels with the cylinder, the sec ond turn delivering the sheet as the bed re turns, the cylinder then being slightly eleand not a. feeder ()PeltltlOl].

rated to permit the type clearing it. As the sheet delivered, it must be stripped from the eylii'ideiu This is all done in the usual way, and is a part of the press operation,

this point, it sometimes happens that a sheet will fail to deliver properly, and will cru1npic up. This is usually 'alled ach0l e up, the sheet remaining jannned between the up per and lower guides. When the press is fed by hand, this will he noticed by the operator, who will stop the press and trip the cylinder, and take the thect out. .W'ith a press feeder, it is necessary that the press he stopped automatically in case of a choke at this poiut,as more sheets com-- ing would increase the jam.

deterring to Figs. 1. 2, 3 and .llhytwo or more light tingerslTl. are provided; the

number depending on thesize of the press. This much is common to other pressi eeders As shown best in Fig. 3, they are immediately over the sheet and are parallel with the supporting bars 172 and tapes173; and are made long enough to fully cover the placecwhere a choke. is mostly likely to occur. These fingers 171 are light and are secured toa shaft journalled at each end. They are n'evented. from dropping beyond the position shown, by an armjlJTh secured to the leithand end of this shatt 174. This.

arm 175 upon and closes an air nozzle 1'76. lVhen this nozzle iskcpt closed the air pressure keeps the diaphragm piston 177 in an elevated position, against the spring 177. see Figs. 12.) and 20, 23 and The move-- ment of diaphragm piston 177 is commune cated through piston rod 178 and lever 179 to lever orpivoted arm .146. It follows that the descent ()f lilllS diaphragm piston and rod operating oirlever 146. causes the stopping and;tripping of the press cylinder, througg h thesanie meansas does the action of plui'iger above referred to.- The air supply is ted to the diaphragm 177 through a restricted passage 180, shown in l igs. 23 and .25. This is the. same .)rineiple as the scribed tor the press guides; however thees" cape Imssage is emisiderably larger relative to the restricted passage. The reason for the escape nozzle being larger relatively, is to get a very quick action on the escape; a. quite as slow moven'ient is permissible in liliing the diaphragm again. In the case ol the small pistons, shown in Fig. it is desired. to haveaboutthe same speed in both.

However, at

ill

one shown in Fi .j23; this is normally closed by a-flat bar or plate 183 pivoted at 18% .near its center. This bar is controlled by the spring 185. The lower end of this bar 183 series as a handle." The body portion 186 forms a support for the different elements,

and is connected by pipe, 187 to the diaphragm 177 shown in Figs; 19 and 20, this pipe being a branch of theplpe connecting the other nozzle shown in Fig. 23. It'is obv ous if the nozzle shown 111 Fig. 24 s opened t \xllproduce the same-results as does opening the nozzle shown in Fig. 23..

The part shown in Fig. 24 is located at a convenient place at the front of the press, where the operator or pressman can reach it whenexamining sheets as they are delivered in the pile. 'A slight pressure of, the finger .on plateor; bar 183, opens nozzle 182 and 'causesa quick stop of the press and feeder.-

The air hose 199, shown in this figure is the supply for the feeder, and not the trips; however the trips on the other side of the feeder are piped from the same supply.

lVhen the feeder is notin use, the delivery apron, pivoted at 200, can be elevated by the drums 201 andcable 202 shown in Fig. 2. After this apron is elevated, the entirefeeder may be, woundback a distance of from lli to 22. Fig. 2 nicely shows the bank 203 of feathered'paper from the upper feed board 2041 and comingaround the drunr205an d on the lower board 206 in the usual manner.

The tail clam-p and drag.

Thetail clamp, in the present machine,is "similar in constructlon, adjustment and control, to that'shown in Figs. 1, .9 and of my Patent No. 1, 11.2,872, of Apr. 18, 1922.

The drag however, in accordance with the presentinvention, is incorporated with the tail clamp structure, asshown in Figs. 2,-

2 and 2 The clamp plate 290 is shown as pivotally supportedat 291, and has an upwardly curved end 292, projecting beyond the pivot 291. The drag comprises the member or bifurcated formation 293, having the upwardly extending ends or ears 29a to which is secured the cross-pin-295 which rests upon i i the curved end 292 of the clamp plate 290 whichextends between said ends 29 1. The underside'of the; middle part 296 of formation 293 issoli-d and curved and adapted to rest upon the bank of sheets in front of the sheet engaging end of clamp plate 290. I The forward end of f0rmation293 is raised and provided with the flange 297 and post 2.98

for holding the weight 299, one or more of which may be used as required. On the side of the drag formation 293' is mounted the nozzle 300. The function .of which is similar to that shown in Figs. 18 and 19 of my said Patent No. 1,4 -.12,872. It will thus be seen that the drag andnozzle are incorporated in the tail clamp structure and par take of the same adjustable movements as that of the tail clamp and has the additional advantage of bringing its dragging influence in the same path of travel on the sheet as that of the tail clamp.

I Figs. and 36 show the press feeding guide as usedwith this feeder, drawn I full size. 7 In addition to the trip pendulum 122 incorporated in it, there is an improvement in the guides over the sheet. This is desirable in connection with a press feeder, as the two very small'rods 239 over the sheet can be adjusted to bring them very close to the plate 237 below the sheet and made parallel with it. -This place or spring 237,

shown in elevation in Fig; 36, is just above the periphery of the press cylinder 238. It also isshown in section. in Fig. 35. It is a regular part of the press. This plate is sprung in position, up against the heavy plate 23 6 forming the lower part of the regular press feed board. When the press guides 120 come down on these spring plates 237 they depress them slightly thus forming a close contact. The small round rods 239 having substantially horizontal and vertical extensions with a coil between said extensions are also sprung in place, the front end is under the press guide 120 and firm against it, there being a notch cut in the guide. The, depth of this notch is slightly more than the flattened end of the rod 239; this fixes the space for the sheet at this end. The other end can be elevated or depressed through meansof the small nut 240 at the top of therod and bearing against the yoke or supporting frame 241 through which the rods 239 project. When properly adjusted these rods 239 insure the sheetbeing kept the other, and actuating means for securing their operationin required relationship for acting upon each successive sheet.

2. In a sheet feeding machine, the combination of drop-and'feed delivery rollers,

and cooperating slow-down rollers and automatically controlled means for driving the slow-down feed rollers at different speeds as requiredv 3. In a sheet feeding machine, the combine tion of drop and feed rollers, and cooperating slow-down rollers, side registering mechanism and means, operating relatively to the said side registeringinerhanism forcausing a separation of the slowalown rollers.

ll. In a sheet il'ecding machine, the combination of drop and fleed rollers, and coop erating slow-dmvn rollers, side registering mechanism and means, operating relatively to the said side registering mechanism, for causing a variation in the pressure between the slow-down rollers.

5. In a sheet; feeding machine, the combination of drop and feed rollers, and cooperating slmwdown rollers, side registering mechanisn'i and means,operating relatively to the said side registering mechanism, for causing a variation in the pressure between the slow-down rollertuand means for adjusting the time ol actuation of the slowdown rollers with respect to the operation ot the side registering mechanism.

(3. in a sheet feeding machine, the combination of drop and feed de ivory rollers and cooperating drop and feed slow-down rollers, a two-speed drive for the slow-down teed roller, means for controlling the drive and at the same time actuating the delivery drop roller.

7'. In a sheet tealing machine, the combination of two sets oi? drop and feed rollers and cooperating pair of slow-down rollers operating relatively, means tor actuating the drop roller of the second set, and means operating relatively thereto for changing the speed oil the $l(lvV-tl O\Vl1 rollers, and means 'lor adjusting the time of saidchange speed control.

8. In a sheet feeding machine, the comhination of two sets of drop and feed rollers,

cooperating slow-down rollers, actuating means tlltl'ejlOl' operating to close the first set of drop and feed rollers, at exactly the right time to start the sheet, and to open the second set of drop and teed rollers at exactly the right time to deliver the sheet to the slow-downs.

E In a sheet :leeding machine, the combination of two sets o'l drop and feed rollers, cooperating slow-down rollers, act/oat means therelmoperating to close the hrst set oi drop and teed rollers at exactly the right time to start the sheet, and to open the second set oi drop and feed rollers at exactly the right. time to deliver the sheet to the slo'\vlo\.ns, and means tor causing a heavy pressure between the eotnierating slow-down rollers to receive the sheet, and

then to cause a lighter engagement between the slow-downs to bring the sheet into position against the guides.

it). In a sheet feeding machine, the combination of two sets of drop and feed rollers, cooperating slowalown rollers, 'actn ating means therefor operating to close the lirst set of drop and feed rollers, at exactly the right time to start the sheet,

and to open the second set ol' drop and feed rollers at exactly the right time todelivcr the sheet to the slow-downs, means for causing a heavy pressure between the cooperating :dow-down rollers to receive the sheet, and then to cause a lighter engagement between the slow-downs to bring the sheet into poi tion against the guides, and means for :nljusting the pressure of said lighter entil) rally the right time to deliver the sheet to the slow-dmvns, means for causing a heavy pressure lwtween the cooperating slmv-down rollers to receive the sheet, and then to cause a lighter engagement between the slow,- downs to bring the sheet into position against the guides, and then to cause a separation of the slow-downs.

1:2. in valve controlling mechanism for sheet 'l'reding machines, the combination of a reel"; shaft, a hraeket slidably movable on the shalt movided with a spring foeenring the shaft to maintain the bracket in iesitiion at adjustment upon the shaft, a tri p pivotally secured to the bracket, and a threaded element for adjusting the pivotal position of the trip with respect to the bracket.

1.3. In valve controlling mechanism for ill) sheet t er-ding machines, the combination of a rock shall, a bracket slidably movable on the shalt provided with a spring for engagin the shaft to maintain the bracket in its position of adjustment upon the shaft, a trip pivotally secured to the bracket, a spring acting upon the trip and a threaded element acting in opposition to the spring for securing the required adjustment of the trip with respect to the ln aeket.

Il-l-. lo a valve cont-rolling mechanism for sheet Feeding machines, the combination of a rock shall, a trip adjustably secured thercto, a teed roller provided with a peripheral groove, the trip provided with an end adapted to project into the groove, said en(l,l1av ing an upper margin ada 'ited normally to register with the top margin of the groove, as means for indicating the proper adjust ment of the trip.

15. In a sheet feeding machine, the combination of cooperating slowdown rollers, means for driving the same at different speeds, comprising a friction elei'nent on the roller shaft, and two friction drive wheels driven at dill'erent speed and means for causing alternate engagement of one or the other of said friction drive wheels with said friction element as required.

um i

'16. In a sheet'feeding machine, the combination of drop and feedrollers and cooperat ing slow-down rollers, and actuating and controlling means therefor, including means for changing the speed 'of'the slow-downs, and

means for adjusting thetime of said change.

atingsloW-down rollers, and'actuati'ng and controllingmeans therefor, including means for changing the speed of the slow-downs, and means for adjusting the time of said change, comprising a rotating cam, a cooperating connecting rod andmeans for adjusting the effective lengthof the connecting rod.

19, In a sheet feeding machine, the combination of drop and feed rollers andcooperating slow-down rollers, and actuating and controlling means therefor, including means for changing the speed of the slow-downs, and means for adjusting the time of said change,compr1s1ng a rotating cam, a cooper-' atingconnecting rod and a slide box and a coacting threaded member, and means for adjusting the efi'ective length of the connecting rod. j Y

20. In a sheet'feeding machine, the combination of drop and feed rollersand cooper ating slow-down rollers, and actuating and controlling means therefor, including means for changing the speed of the slow-downs, and means for adjusting thetime of said change, comprising a connecting rod, means operating synchronously With other parts of the machine for actuating the connecting rod, and a hand operated element capableof varying the efiective length of the connecting rod While the machine is operating;

21. I In a sheet feeding machine, side guiding mechanism comprising alongitudinally reciprocating shaft,-'having a'rack associated therewith, a reciprocating. actuating rack moving at right angles therewith, a pinion common to both racks, a cam actuated crosshead associated with the actuating rack, connecting means between the cam and cross head including a connecting rod and rod-end V and cooperating pin and shoulder for limiting the relative movement between rod and rod-end to "a half turn and means whereby the cross-head may be turned from one side to the other to give right hand or left hand actuation as required.

22. In a valve controlling mechanism, the combination ofa rock-shaft of substantially square cross section, a trip supporting bracket mounted to slide on the shaft having two adjacent faces at substantially right angles With each other for engaging corresponding faces ofthe shaft, and a spring plate'secured to the bracket having its free end engaging a corner of the shaft diametrien a in faces.

HOWARD K, KING.

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