US1147562A - Paper-feeding machine. - Google Patents

Description

A. J. S LADE, J'R.

PAPER FEEDING MACHINE. APPLICATION FILED MAR, 33,1914.

Patented July 20, 1915;

2 SHEETS-SHEET I.

A. 1. SLADJE, 1R.

YP APER FEEDING MACHINE. APPLICATION FILED MAR. 23,19i4.

l,l%?;56%, v Patented July 20,1915, 2 suns- 1551 2.

' lllOIl automatically its actuation of suitable means for thatcally eliminated and the pressure on the tail drag will be automatically brought to normal position after each combing operation,

- the specification and be PAPER-FEEDING MACHINE.

Application filed March 23.

To all whom it may concern:

Be it known that I, ALBERT J. SLADE, Jr., a citizen of the United States, and a resident of Pearl River, county of Rockland, and State of New York, have invented certain new and, useful Improvements in Paper-Feeding Machines, of which the follow ing is a full and clear specification.

This invention relates to paper feeding -machines and more especially to that type of feeding machines constituting the subject matter of the application of Talbot C. Dexter, Ser N 0: {195,486, filed October 16th, 1913.

Theprimary-object of this invention is to provide an improved construction for automatically varying the pressure on the tail drag with a view to simplifying the operation of regulating the duration of the sheet combing operation.

One of the main purposes of this invention is to provide means for varying the pressure on the tail drag, the construction and arrangement of parts being such that Whenever the pressure on automatically reduced for facilitating the movement of a sheet into position beneath the drop rollers, the de-- sired position of the sheet will be attained before the end of a certain predetermined periodof combing which is constant unless the arrival of the sheet into registry posishortens such period by In this ur ose. wa a misfeed is ractisuitable means being provided for adjusting this normal pressure to any desired ten-. sion.

Other and further objects will appear in pointed out in the appended claims, reference being had to the rawings which; exemplify 'my invention and in which r f Figure 1 is a side elevation of a portion of a sheet-feeding machine which embodies the improvements; Fig. 2 is a top plan view of the same; Fig' 3 tail-elevation showing a modification of the pressure-varying throwout device. Fig. =4 f -is a fragmentarv section on thelineIV-IV,

F a a 1. I In the drawings; which show the preferred Specification of Letters Patent.

/ the manner to be is a fragmentary do vilatelfltedl y 20, 1915. 1914. herial No. 826,639, i

embodiment of my invention, the shaft 1 .is journaled in suitable side frames 2 (only one being shown). Journaled upon the shaft 1 is a sleeve 3 upon which is gnounted arms, 5 combing wheel 7.

odically raising and lowerihg the combing wheel 7. Said cam 10 is keyed to a shaft 11., This sheet feeding mechanism constitutes one. of'a pair which are spaced laterallyi of the machine, the regulation of the peripds of activity of which makes it possible to present the sheet in proper relation vto tl'e drop roller mechanism which feeds the s me from the pile. Keyed to the shaft 1 are sprocket wheels 1 2 which transmit powerby means of sprocket chains 13 to the sprocket wheels 14 keyed to the spindles 6, these connections being-adapted to continuously rotate the combing wheel 7 during their rising and falling movements which carry them to and from the pile of sheets P. Suita-bl means may be provided for bring ing abo t a proper register of the sheet by the periods of activity of the combing wheel 7 for the purpose of advancing either edge of the sheet moreor less with respect to its other actuated means now to be a rock shaft 15 which is journaled within .keyed thereto a, segsegmental ratchetlS, 1s a sleeve 17 'which carries a cam disk 18 adjacentto the segmental ratehet 16. Journaled within the cam disk 18 but not attached thereto and a radially projecting finger 19 spaced laterally therefrom upon the sleeve 17, is a small shaft 20 which carries a pawl 21 which is adapted to engage the'teeth ofthe segmentalv ratchet v16 when said pawl is displaced. in presently explained. 1 De pending fromthe shaft 20 is a; pendulum 22 which/is normally disposed ih;tl 1e pa th.

of a sheetfed from to partakeof .thel'movement of fshaft15 in one direction's'othat a cam roller; 23 which is carried by cam arm shaft 11 and rotated thereby.

time it would be raised by the roller 9 is approximately midway of its La and 24 projecting the sleeve 42 is caused to rise to the outer run of the cam 1-8, thus elevating the combing wheel. '2' and termithis period of activity upon the top sheet of a pile. scribed in the applications of George A. Martin, Serial Number 778,282, filed June 12th.,l913 and in the above mentioned application of Talbot C. Dexter, and need not be more fully referred to in this specification.

An oscillatory movement is imparted to the shaft 15 by means of a rock arm 25 which is pivotally connected to one end of a connecting link 26, the other end of said link being pivotally connected to a crank arm 27 of smaller length than the lever arm E25, said crank arm 2'? being keyed to the It will be seen therefore, that each combing Wheel is raised and lowered at regular periodic intervals by means of the combing roller 9, and if during the period while the combing wheel is upon the pile, the forward edge of the top sheet thereof reaches the pendulum22, the engagement of the pawl 21 with the ratchet it will cause the elevation of the combing wheel '3 on that side prior to the periodic cam 10. Hence the corresponding combing wheel acting upon the other edge of the sheet which. is supposedly m the rear, is caused to catch up. the top sheet is therefore prop: erly presented to the front gages. its point- 0 tin the above mentioned Dexter applica it may happen in machines of this character that for some reason or other, the movement oit top sheet may be retarded I 1. extent that the forward edge within the periodic interval allowed by the cam 10, during wl' ich the combing wheels 7 are acting upon said. sheet. the said Dexter application :mech nlsm is disclosed for reduc'ug the pressure on the-tail drag for the pn pose of facilitating the movement of the top sheet. Qccordi to the present application,

similar mechanism is. provided which effects the same result in an improved manner, the pressure enisting upon the tail drag being reduced to normal againafter each variation, prior to the beginning of the next sheet combing operation. Thus by referring to Fig.1, it will be seen that the v inner :un on the cam 10. Also keyed to the can shaft 11 is a cam 28 which according to the showing of 1, is about-to engage a cam roller 29 carried by a cam arm 30, which pivoted on a stud 31. lhe displaceable element in the form of a link 32 has its forward end pivotally connected at 33 with the lower end of the cam arm 30. The rear end of the link 32 is provided with a shoulder for laterally projecting pm This mechai'iism is fully de- .73 which serves to clamp :s not arrive the front gages the tension of spring masses or lug as mounted on a lever 35, whichis pivoted at 36. The upper end of said lever is pivotally connected at 37 to one end of a cam bar 38, the other end of said cam bar being pivoted at 39 to a radial arm d0 journaled upon a short shaft l1. A pressure foot 42 which constitutes the pressure-applying member of the tail drag. is pivoted at l3 to the lower end of a spring rod 44, said spring rod being slidably. mounted in spaced bearing lugs 45 which are mounted on a block 4-6, said block 46 being slidably adjustable along a suitable frame or support 47. Supporting bar a7 is pivotally mounted (preferably at one end) upon a stud 47 whichis threaded into the bracket 72. An arcuate slot 2 in the bracket 72 permits the passage of a bolt the supporting bar 47 to the bracket 72 in whatever position to which it may be adjusted. As shown best in Fig. 2, the spring rod 424: carries a block l8 intermediately of the bearing lugs 45,-

said block 48 serving to mount a 1ournal pin of a cam roller l9 which is adapted to be engaged by the cam bar 38 when it is raised in the manner to be pointed out. Mounted on the spring rod is is a spring 50 which is interposed between the lower end of a slide block 46 and an adjustable abutment 51 which is it for adjusting the tension of the spring 50.

The construction and arrangement of these parts are such that whenever the cam 28 engages the cam roller 29., the link 32 (provided it has not been displaced in the manner to be referred to) transmits power tothe cam rod 38, causing said cam bar to move upwardly to engage the cam roller 4:9 and thus lifting the spring rod 44 against 50 and removing pressure foot 42 from the top sheet of the pile. In order to provide simple and efficient means for preventing this parts are operating normally and the sheets are being fed regularly, a device for elevating the link 32 so that its shoulder will not engage the pin 34, must be provided. lhis may be accomplished by connecting said link 32130 the'lever arm 5 by means of a spring 62 or other suitable connection, whereby By an inspection of Fig. 1, it will be seen that the cam 10 has still considerable angular distance to travel before it operates the cam roller 9, Whereas the cam 28 is in a position in which it is about to throw the cam arm 30 to the left to effect a reduction of threaded to the rod action when the.

menses the tail drag. This angle of travel of the most instances to get the top sheet down to the b rod 56 intermediately of the heaping lugs57 is a block 59 7 on the'tail drag. A tail the front gages under the reduced ressure clamp 55 see Fig. 1) which is carried by a spring rod 56, is 'dably mounted in spaced beating lugs 57 harried by a slide 58 WillCll is adjustable on ar or side frame 47. Mounted on the which carries a cam roller 60 Which is suitably disposedto be engaged by acam bar 61 in raised position indicated on ustably is pivotally connected being fed from the pile,

'9, the combing Wheel 7 the drawings. cam bar 61 is pivotally connected at 62 With a radial arm 63. The otherend of said cam bar is pivotally connected at 64 With one arm of the lever 65, said lever being pivoted on the short shaft 36 and having its other arm the link 67. The other end of the link 67 to a cam arm 68 which depends from the short shaft 3-1 and carries a cam roller 69 which runs on a cam 70, said arm being shown in Fig. 1 having its outer run in contact .With the roller 69, thus causto be raised. An adjustable abutment 70 which is threaded to adjust the tension of pressed to the pile.

eferring now to Fig. 2, the rearwardly projecting end of a bracket frame 72 is adsecured to and serves to support ar or frame 47 by means of the stud held in position by a nut 74. The drop roller shaft 75 is provided With the forwardly extending arm 7 6 carrying a cam roller 77 which is operated by the drop roller cam (not shorvn) the b Keyed to the shaft 75 is 82 vhich when the pendulum is in elevated position permitting the top sheet to be fed off and the droproller in lowered position toeifect this feeding oil, is interposed in the path of the radial arm 19 Within which one end of the pendulum shaft 20 is jour- This positively prevents the pendueing dropped onto a sheet Which is Which might cause injury to the sheet. i

e operation of the mechanism hereinabove described briefly considered is as'follows: y an inspection of Fig. 1, it will be with the cam roller on that side of the retained in elethe cam roller .9

cam 10 is in engagement machine will be positively vat'ed position. As soon as Y reaches the inner run of the cam 10 said Will be permitted to operate combing wheel of sheets until said roller upon the bank again travels to the outer run of said cam 35 10, provided that the top sheet does I not in orking of the the meantime actuate the cause. the combing Wheel means of the ratchet 16, pawl 21 and cam 18, which acts on the cam rcller uring the normal sheet combing instrumentalities, if the sheets are presented at suitable intervals, the pressure exerted by the pressure foot 42 Will remain substantially constant under the resilient action of spring 50. nder these conditions, each of the combing Wheels 7 Will be raised at such intervals relatively to the. timing of the cams 28, that the link 32 Will be raised before said cam 28 imparts a rearward movement thereto, thus preventing the upward movement of the cam bar 38 which would engage the cam roller l9 and lift the pressure foot 42 from the pile. If, on the other hand, the duration of the period of activity of the combing Wheel is prolonged by the retardation of the top sheet which would prevent the forward edge thereof being brought to the front gages prior to the periodic lift of said combing Wheel 7, the cam 28 Will engage the cam roller 29 and cause the link 32 to be driven rearwardly before it is raised, thus causing the cam bar 38 to be lifted and removing the pressure foot 42 from the pile. In consequence, the movement of the top sheet-Will be facilitated tobring it against the front gages prior to the regular periodic lift of the combing Wheel 7. If, again, the movement of the top sheet should be delayed until after the cam 28 had caused a reduction of pressure on the tail drag, in the manner indicated'and the top sheet had been thereby moved to the front gages prior to the regularperiodic action of cam 10 ,on the combing Wheel 7, the pendulum 22 would be displaced along With the pawl 21 and immediately the combing Wheel 7 would be lifted, as Well as the driving link 32. The upward movement of the driving link 32 Would immediately release the cam bar 88, permitting the cam roller 49 to drop and automatically returning the tail drag to normal pressure, all of these operations being completed Within a single cycle of the paper feeding operations. As will appear upon. an inspection of Fig. 1, the cum 7 the cam roller 69 to elevate approximately throughout the tail clamp 55 the period of 111 lowered position, when the sheet regisoperation of cam '10.

I claim:

1. In a feeding machine, a sheet-feeding instrumentality movable into and out of enga gement With the top sheet of a pile,'sheetactuated means, for terminating the action of said sheet-feeding instrumentality, a tail dragcapable of exerting different pressures ona pileofsheets, means including detachyed until the regular periodic,

. Lid-7,58%

ably connected elements for transmitting out of engagement with the top sheet of a I power to said tail drag to vary the pressure pile, sheet-actuated means for controlling the I exerted thereby, and means under the conperiod of activity of said=sheet-eombing inv trol of said sheet-actuated means for disconstrumentality, variable pressure means for necting said elements. retarding the movement of a sheet under the 2; In a feeding machine, a sheet-feeding action of said sheet-combing instrumentality, instrumentality movable into and out of ena positively driven element, non-yieldable gagement with the top sheet-of a pile, sheetmeans for transmitting power from sai actuated means for determining the durapositively driven element to said variable 10 tion of the period of activity of said sheetpressure means, said non-yieldable means feeding instrumentality, means including including detachably' connected elements, detaehably connected elements for exerting and means under the control of said sheetmore or less pressure on said sheet to shorten combing instrumentality for disconnecting or lengthen the period during which said said detachably connected elements to ren- 15 sheet-feeding instrumentality is active, and der said power-transmitting means inoperameans operated by the movement of said intive. v strumentality away from said top sheet for 7 In a sheet-feeding machine, a sheetdiseonneeting said elements. combing instrumentality movable into an 3. In a feeding machine, a sheet-feeding out of engagement with the top sheet of a 2 instruinentality periodically engaging the pile, sheet-actuated means for controlling the toip sheet of a pile, sheetactuated means for period of activity of said sheet-combing indetermining the duration of the period of strumentality, variable pressure means for activity of s id sheet-feeding instrumen-- retarding the movement of a sheet under the tality, means ier exerting more or less presaction of said sheet-combing instrumentality,

25 sure on said sheet to shorten or lengthen the a positively driven element, non-yieldable period during which said sheet-feeding inmeans for transmitting power from sai strumentality is active, said pressure exertpositively driven element to said variable ing' means including detachably connected pressure means, said non-yieldable means inelements, and means subject to the sheeteluding detaehbly connected elements, and 30 actuated means for disconnecting said elemeans under the control of the rising movements. 'ments of said sheet-combing instrumentality a. In a sheet feeding machine, an autofor disconnecting said detachably connected matic sheet feeding device capable of per1- elements to render said power-transmitting odie intervals of activity, a tail drag opmeans inoperative.

35 erating upon the rear of a bank of sheets, 8. In a sheet-feeding machine, a sheet a power shaft, a mechanical train connect combing instrumentality movable into and .ing said power shaft with said tail drag, out of engagement with the top sheet of a said train including a pivotally mounted pile, sheet-actuated means for controlling link movable into and out of power transthe period of activity of said sheet-combing- 4O mitting position in said train, sheet actuinstrumentality, variable pressure nieansfor 16 ated means for regulating the intervals of retarding the movement of a sheetunder'the activity of said sheet feeding device, and action of said sheet-combing instru ental means depending on the action of said sheet ity, a positively driven element, non-yieldaetuatcd means for moving said link into able means for transmittmg power a from 45 and out of power transmitting position. said positively driven element to sa1dva'r1- 5. In a sheet feeding machine, an autoable pressure means, said non-yieldable matic sheet feeding device capable of perimeans including detaehably connected eleodic intervals of activity, a tail drag opments, and means depending upon said erating-upon the rear of a bank of sheets, a sheet-actuated means for disconnecting said power shaft, a mechanical train connectin detachably connected elements. said power shaft with said tail drag, sai 9. In a feeding machine, a sheet-combing train including a pivotally mounted link instrumentality movable into and out of enmovable into and out of power transmitting gagement with the top sheet of a pile, sheetposition in said train, sheet actuated means actuated means for terminating the action 55 for regulating the intervals of activity of of said sheet-combing instrumentality, a tail I said sheet feeding device, and moving means drag capable of exerting different pressures depending on the action of said sheet actuon a pile of sheets, means under the control ated means for moving said link out of of saidsheet-aetuated means for modifying I power transmitting position, under a normal the pressure exerted by said tail drag, said 60 duration of said. period of activity of the pressure-modifying means including a sheet-feeding device, said link remaining in power transmitting bar, normally inoperapower transmitti'ng position under a pro- .tive means for driving .said bar, and means longed period of activity of the same. under the control of said sheet-actuated 6. In a sheet-feeding machine, a sheetmeans for rendering said driving means incombing instrumentality, movable into and operative, said tail drag comprising a pres- 'sure snoe, yieldable 'means for normally pressing said shoe against the top sheet of a pile, and means connected to said shoe and adapted to be engaged by said power transmitting bar for lift'ng said shoe from the pile at each operatio of said power tlransmitting bar. Y

10. In a feeding machine, a sheet-feeding instrumentality movable into and outof engagement with the top sheetof a pile, sheetfeeding instrumentality, exerting more or less pressure on said sheet to shorten or lengthen the period during which said sheet-feeding active, and variable pressure means comprising yieldable means pressure foot against said top 'sheet and means for lifting said pressure foot out of engagement with said top sheet against the pressure of said yieldable means, said pressing means comprising a fixed abutment, a

mounted on said rod, and a spring mounted on said rod between said abutments.

' 11. In a=feeding machine, a sheet-feeding and out of en- ,tion of the period ofactivity of said sheet feeding instrumentality,a pressure foot for exerting more or less pressure on said top sheet to shorten or lengthen the period,,during whichsaid sheet feeding instrumentality is active, a fixed abutment, a rod slidably mounted in said abutment, an abutment carried by said rod, a spring mounted on said rod between said abutments, a cam roller mounted on said rod, and means under the controLof said sheetactuated means for dis placin said cam roller.

- actuated means 12. n a feeding machine, asheet-feeding instrumentality movable into and out ofengagementwith the top sheet of a pile,.sheetfor determining the duration of the period of activity of said sheet feeding instrumentality, a pressure foot for actuated means for deter miningthe duration- .roller, a link movable instrumentality isfor pressing said I sheet-actuated means abutment carried cam a sheet-feeding of the period of activity of said sheet feedcarspring mounted. on said between said abutments, a cam roller mounted on said rod, and means under the control of said sheet actuated means for displacmg said cam roller, the last said means including a cam bar for operating said cam into and out of position to drive said cam bar,'and means for displacing said link to render the cam bar inoperative. i

14 In a feeding machine, instrumentality movab engagement with the top sheet of apile, for determining the duration of the period of activity of said a sheet-feeding sheet feeding instrumentality, a pressure rod slidablymounted therein, an abutment f said sheet feeding in- 1e into, and out of strumentality is active, a fixed abutment, a

rod slidably mounted in said abutment, an

by said rod, a sprin mounted on said rod, between said abutments, a cam roller mounted on said rod, a bar for operating said cam roller, a power-driven link movable into and out of position to drive said cam bar, and means for moving said link out of power-transmitting position when said sheet feeding instrumentality is removed from the pile.

15. In a feed ng machine, a sheet-feeding instrumentahty movable into and out of engagement with the 'top sheet of a p sheet actuated sheet feeding instrumentality, a pressure foot for exerting more or less pressure on said top sheet to shorten or lengthen the period during which said sheet feeding instrumentality a fixed abutment, a

ments, a cam roll'e'r mountedon said rod, control of said sheet actuatedmeans for displacing said cam roller, the last said means including a cam ar or operating said camroller, a link movable into and out said cam bar, and means for displacing said link to render the cam bar inoperative, said link displacing means being controlled by said sheet-actuated means.

-l6. In a feeding machine, a sheet-feeding instrumentality movable into and out of engagement with the top sheet of a pile, sheetactuated -means for determining the dura-' tion of the period of activity of said sheet of position to drive.

nected to said lever,

feedin instrumentality, a pressure root for exerting more or less pressure on said top sheet to shorten or lengthen the period during which said sheet "feeding instrumentality is active, a fixed abutment, a rod slidably mounted in said abutment, an abutment carried by said rod, a spring mounted on said rod between said abutments, a cam roller mounted on said rod, and means under the control of said sheet-actuated means for dis placing said cam roller, the last said means including a cam bar for operating said cam roller, a power driven cam shaft, a cam arm operated thereby, and a link detachably con: nected to said cam bar and driven by said cam arm.

17. In a feeding machine, a sheet-feeding instrumentality movable into and out of engagement with the top sheet of a pile, sheet actuated means for determining the duration of the period of activity of said sheet feeding instrumentality, a pressure foot for exerting more or less pressure on said top sheet to shorten or lengthen the period during which said sheet feeding instrumentality is active, a fixed abutment, a rod slidably mounted in said abutment, an abutment carried by said rod, a spring mounted on said rod between said abutments, a' cam roller mounted onsaid rod, and means unde the control of said sheet-actuated means for displacing said cam roller, the last said means including a cam bar for operating saidcam roller, and a power driven linlr detachably connected to said cam bar. a

18. In a feeding machine, a sheet combing instrumentality gagement with the top sheet of a actuated means for determining the duration of the period of activity" of said sheet combing instrumentality, a tail drag normally pressing the pile of sheets, means for reducing the pressure exerted by said tail drag to regulate the duration of the period of comb, said combing instrumentality being providel with sheet-actuated means for controlling the movement of said instrumentality away from the pile of sheets, said pressurereducing means comprising a cam operated arm, a link pivoted thereto, a lever provided with a lateral projection, said link pile, sheethaving a free end provided with a shoulder"- said projection, a cam roller tail drag, a cam bar opersaid cam bar being conand means under the sheet actuated means for for engaging mounted on said ating on said roller,

controlof said moving said link which said shoulder engages said projection.

.19. In a paper feeding machine, sheetcombing device, means for moving said device into and out of engagement with the top sheet of a pile, variable pressure, means for varying the pressure of said tail drag, said means being movable into and out of eninto and out of position in.

a tail drag subject to predetermined period of activity of said sheeteombmg device and adapted to n. the period of acti provided with a spring rod, mounted thereon and spri said rod, acam bar coliperr roller, and means for opera'tin 20.111 a paper feed iactuated tripping mechai ling the re istor of a she t, includ'. 1g a penduium adapted be engaged by a sheet, means for moving pcnuul n. out of the path of s l sheet subsequent the registry of the sheet, a di: p ller, a 5i; shaft for moving said drca roller into out of sheet engaging posi ion, and operated by the movement of said drop weenie operative w y changes, a tail 5 a cam. surrounding r with r a N 1,

niecnan s which corresponds to the drop or roller, for holding said pendulum out path of sheet during the activity or said drop roller.

21. in a paper machine, a sheetfeeding device, tripping: mechanism for said device having a pendulum depending in no the path of a sheet, said pendulum being movable by said sheet to control the tern'n nation of the period of activity of said "feeding device, means :tor moving said pends .m out of the path of said sheet, a drop i, shaft, a drop roller mounted thereon a finger carried by said drop roller shaft, the movement of said shaft being adapted "o move said finger into and out of pe s *0 t itic i. blocking the return of the pendulum into the path of said 22. in a paper machine, a paper combing; device, mea tor moving said ne vice into and out of with the paper, a tail subject to variable pres sure, and means for varying the pressure said tail drag, said means being normally inoperative under a predetermined period of activity of said sheet combing device and adapted to become operative under a change in period of activity, said pressure var-3 inn means being to reestablish n mal conditions corresponding; to said 'prede termined period 0"" activity within the combing opera 23. lfn a paper feeding machine, a combing device, means tier moving a vice into and out of engagement with top sheet of a. pile, sheetactuated means controlling the operation of said device in ing means, a tail drag; exertng a yield-a pressure on pile oi? sheets, a cam ro s carried by tail drag, acam bar for engagring said roller to elevate said tail and means for moving; said can: b r, saie cam bar being" adapted to release said cam roller automatically when said cam bar H1037" ing; means cease" to thereon,

2%. in a r .er lieeoing machine, the cone a slide slidable 1% bination witn a support, oi

I mounted in said bearing v cured to said rod intermediately of said on said support, said slide being provided with spaced bearing lugs, a rod reciprocably lugs a block sebearing lugs, a Cam roller journaled on said block, a cam for operating on said cam roller, a pressure exerting element carried by said rod, and means yieldably depressing said rod, said support being pivotally mounted and provided with means for clamping it in any position to which. it may be adjusted.

ALBERT J. SLADE, JR; Witnesses:

RoBT; H. ARMSTRONG, D. VON soos' nN, Jr.

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