US1434014A

US1434014A - Stacker

Info

Publication number: US1434014A
Application number: US459134A
Authority: US
Inventors: Bombard Leon E La; Melvin H Sidebotham
Original assignee: SPECIALTY AUTOMATIC MACHINE CO
Current assignee: SPECIALTY AUTOMATIC MACHINE Co
Priority date: 1921-04-06
Filing date: 1921-04-06
Publication date: 1922-10-31
Anticipated expiration: 1939-10-31

Description

` L. E. LA BOMB A`RD AND NI. H. SIDEBOTHAIV.

STACKER.

APPLICATION 111.150 AP11.6.1921.

Patented 001. 31, 1922.,

2 S H E ETS ,space. V general type require a certain amount` 'ot longitudinal exposed` surface for attendants t0 gather up the articles after they leave the oa. ai, iena arras LEGE' BDB/IBARD AND MELVIN H. SDEBTHAM, @F CHELSEA, MASSACHUSETTS,

ASSJIGNGRS T0 SPECIALTY AUTOMATEC MCHNE GMPANY, 0F CHELSEA, MASSA.- UHllJ'SjlElllUS, .di CORIPRATIN 0F MASSACHUSETTS. v

sracnna.

Application tiled april a,

.To all' whom t may con/0cm.' f

Ble it known that we, Laon E. i A'BoMnA-nn and MELVIN H. SIDEBOTHAM, citizens of the United States, and residents of Chelsea, in

y blanks: into lfolded boxes. Such a machine is illustrated in Letters Patent No. 1,345,899, granted July 20, 1920 to Leon E. La Bombard, and another ltype of folding machine is illustrated in our ap lication filed July 2,

1921, serial No. 4.82, ai.

1n stacker mechanism of the general type illustrated in the patent referred to, the folded blanks issue from the machine which folds them, onto a. slowly moving receiving belt, the folded blanks passing through a throat between lsaid receiving belt and an upper relatively inclined -belt and accumulating in overlapped condition and then passing under a pressin belt which holds the row of overlapping blanks under pressure long enough for the glue to set.

@ne of the objects of the present invention is to provide means which will effect quick and positive movement of each folded blank tothe nip of the pressing and receiving belts so as to keep the throat clear by ensuring the movement of each blank out of the way of the next following blank.

Another object is to provide means for so 'varying the shape andy size of the throat as to enable the machine to o crate properly upon blanks of Widely di' erent sizes and grades or qualities of material.

lncidental to the last stated object is the further one of providing for varying adjustments of the throat without necessitating longitudinal adjustment of the parts, thereby enabling a shorter stacker than usual to to be employed, resulting in a saving of This is becausea l stackers of this 1921. Serial Elo. $559,134.

presser belt. Obviously any structure which i requires longitudinal adjustment of the parts above thereceiving belt to provide for large sizes of blanks necessitate along lower belt in order to furnish the exposed surface mentioned.

l With the above and 'other minor objects 1n view, the present invention consists in the construction and combination of parts substantial'1y as hereinafter described. andv claimed.

Of the accompanying drawing:

Figure 1 isa broken out perspective View of so much of-our improved stacker as is necessary to an understanding of the same, it being understood that arts at the rear which would merely `dup icate parts illus#| trated are omitted.' j

Figure 2 is a detail sectional elevation.

Figure B is a similar view illustrating an adjustment whenlarger blanks are being operated upon. i

1n Fi ure 1 `a portion of the frame ot a bok foldging machine is indicated at 10. lin

each of Figures 1, 2 and 3 the rolls which deliver the folded blanks ato the stacker are shown at 11,12.

The travelling platform or receiving belt 13, toward which the blanks are delivered by the

rolls

11, 12, is mounted at one end on, and is ldriven by, a drum 14 (ll ig. 1) which is operated at a slow speed by .power through suitable gearing in a gear case 15. its such gearing is .illustrated and described in the to is necessaryV herein.

rl`he shaft of the outer roll 16 for the belt 13 is mounted in 'bearings provided therefor in the outer end of a frame 17 having belt supporting rolls 18 and a flat support such as a series of boards 19. The outer end of the frame 17 is `pivotally supported at a fixed height, as by a pair of legs a portion of Patent 1,346,899, no detailed reference therewhich is shown at 20, said leg having a sleeve :21 enclosing a pivot pin or stu projecting from the frame. The inner end of the frame, theend nearest the drum 1d, is verticali adjustable as by mechanism shown in llig. 1, 23 being a. bracket secured to the frame. The bracket has a vertical lll@ slot 2a through which a shaft 25 extends,- Y

said @aft carrying a pinion 26 engaging a rack 27 wlrried by the bracket. detent pawl 28 loosely mounted on the shaft 25 and having a handle pin `29 is adapted to lengage the 'rack 27. lt is to be understood 2 and 3. To maintain the belt 13 at proper tension under all adjustmentsot the trame 17 suitable tensioning means are em loyed such as a gravity roll 3l (Fig. i) carried by pivoted arms one of which is shown. at 32.

The upper or pressing belt 33, under some adjustments, presents a part of the upper wall of the throat ai, as indicated in Figure 3. To facilitate the attaining of this result, a hinged frame bar 33 is employed,

lsaid bar having a hub 34 mounted on a pivot rod or shaft 35. In practice the rod 35 is screw-threaded and the hub is inn ternally threaded so that by rotating the rod the lateral position oit the frame bar may be adjusted. For present purposes it may' be assumed that the bar 33 is laterally positioned by sliding the hub 34 along the rod 35. y

Mounted on a stud or axle 36 projecting from one side ofthe frame bar 33 near its outer end is apulley .or driving drum 3T on which the outer end of the belt 38 is mounted, the inner endy of the belt being mounted on a roll or wide pulley 39 idly mounted on a pin projecting from an arm 40.

whichis tree to rise and fall as presently explained. A sprocket 41 operatively com nected with the pulley or driving drum 37 is driven by a chain 42 passing over idle guide rolls 43 carried by the frame bar 33. The chain isdriven b a sprocket 44 carried by a shaft 45 on whlch the arm 4G- is pivotally supported so that said arm is tree to gravitate toward the lower belt 13. The shat't 45 has a gear 46 meshing with a gear 47 the latter having a sprocket 48 driven by a chain 49 from any suitable part of the machine such as a small sprocket connected with the shaft ofdrum 14. For present urposes it is suiicient to state that the Ilu'elt 38 is driven, through the gearing referred to, at the same slow speed as the belt 13.

Owing to the fact that the pressing belt 38 is driven in the manner described, the lower or actin stretch of said belt is kept taut and there ore .ensuresl even and uniform pressure on the blanks.

To keep the belt 38 under proper tension we employa tightener roll 50carried kby an adjustable arm consisting of two sections 51, 52, having a clamp jointy 53,'the .section 63 is not menoretance of the tightener roll 50rom the belt pulley 37 is varied by changing the angular relationship of the sections 51, 52, and the degree of pressure ,of said roll on the belt is varied by shifting the weight 53 along the arm 57. K

We will now describe the mechanism for locating the folded blanks a t successively in the throat w. The hub 59 oi an arm 60 is freelymounted on the shaft 45 and has a longitudinally adjustable extension, 61 carrying a' roll 62o A belt 63 is mounted on said roll 62 and on. a roll 64 which is freely mounted on the shaft 45 between the hubs or arms and 46. Therefore the belt ositively driven by any toothed gearing. "t is frictionally driven by a roll which bears on a portion of the belt .running on the roll 64, and alsobears on the upper deliver roll 11. ylfhe belt 63 is therefore frictiona ly driven at approximately the same relatively hi h speed as that ot the travel of the blans while being delivered from the folding machine.

rlhe friction roll 65 1s carried by a yoke 66 pivotally connected at 67 to a link 63 which, 1n turn, is pivotally supported on a rod 69 mounted in a casting 70., The castin 70 is slidably mounted on both of the mem ers 35, 45 so as to be laterally adjustable thereon.- A spring 71 coiled around a guidepinfl 72 rising from the casting through a hole in the link 70 is confined between an adjustable collar 73 and the top ofthe link and serves to cause the roll 65 to bear with sutlicient pressure on the roll 11 and belt 63 to effect proper frictional drive of the belt. y

Since the

arm

60, 61, is mounted freely on the shaft 45 it is desirable to adjustably limit its downward movement. This, in the machine illustrated, is provided for by a hook stop 75. the vertical portion of which is adjustable in an arm 74 of the casting- 70. The lower end ofsaid stop hooks under a pin 76 (Fig.l l) projecting from the side of the arm 60.

Adjustably mounted on the pin 76 is a short rod 77 to the lowerendof which is secured a stud shaft 78 on which is freely mounted a roll 79 having a multi lieity` of rows of small pins. The roll 79, being freely i mounted, is'rotated by the blanks carried `over it by the belt 63. `This roll forms an important feature of our invention as will presently be explained.4 Preferably the roll, or at least its pins, is of-non-metallie material such as rubber, to avoid indenting the rear. edges of the folded blanks. The roll Maaate isso mounted as to Contact with the 'under side of the lower stretch of the belt 63 Vthe pressure ot' which on the roll is yieldingly counterbalanced by a spring 80 connected at its lower end to the arm 60 and at its upper end to a pin 81 projecting from a collar vertically adjustable on a rod 82 rising from the arm 74@ of the casting 70.

ln order that all of the parts just described may be laterally adjusted with the bar 33, the rod 69 (Fig 1)' has a connection at 83 with said bar.

When the parts so far described are adjusted as illustrated in Figures 1 and 2, and the machine is in operation, the folded blanks a; a follow each other in rapid succes-v sion between the

rolls

11, 12 and pass between the belt 63 andthe in roll 79. As stated, said belt and roll wil move at practically the same speed as the blanks. The front edge of each blank is de'lected down by thebelt 63 onto the belt 13 .or onto the preceding blank. 'll` he adjustable support for the pin roll consisting of the members 76, 77, 7 8 (Fig. l) enables said roll to be set at the proper distance from the belt roll 39 to act properly upon the blanks so that, when the front edge of each blank reaches the nip of belt 38 the blank will be quickly pushed to overlapping position. words, when the front edge of. a folded blank or box a reaches the belt 38 which is moving slowly, the` rear edge of that blank is' engaged by some of the pins of the roll 79 and the front edge ofthe blank is tucked snugly under the belt 38-and the rear edge is so acted upon that the blank is slightly bent and snapped down onto the belt 13 or onto a preceding blank. ln this manner the rear edge of each blank is quickly shifted out of the way of, the' one rapidly approaching behind it.'A The described adjustable mounting of the pin roll enables the latter to be set to properly act on supplies of blanks differing in length. Sometimes however it is desirable'to adjust for blanks of consider-A ably greater length, in which case the size of the throat a" should be considerably increased. For this purpose the machine is equipped with two other elements which may be either on the machine in displaced position or entirely removed when not needed t'or use. These elements are shown in Figure 3 and omitted from Figures 1 and 2 to avoid confusion. @ne of said elements consists of a slide 84 adjustably secured to the bar 33 as by a screw, a jointed arm pivotallyconnected to said slide and consisting of two sections 85, 86, connected by a clamp joint 87, and having a roll 88 to bear on and deflect the lower stretch of the belt 38. The other eement yconsists of a block 89 adjustably clamped on the bar 33, and a rod 96 havinga hook 91,'the rod being vertically adjustable 1n the block 89. By engaging the book 91 with,

lin other c the under side of the arm l0 the belt roll 39 can be held at any required point of elevation, and by means 0f the roll 88, the stretch of the belt 38 between

rolls

39, 88, can be caused to travel in such position lof inclination as to provide a throat :v for blanks of' much greater length than when the machine is adjusted as in F ig. 2. The operation of the machine is the same when adjusted as in Figure 3, as above described in connection with Figure 2, but much longer. blanks can be operated upon. Since no longitudinal adjustment of the belt 38 is ever required there is always ample space on the belt 13 beyond the belt 38 for' the attendant to gather up the blanks the glue laps of which the delivering rolls 11, 12, is that it facili tates the securing of a proper tapering shape of the throat especially when the machine is used as illustrated in Figure 3.

'llhe weight of the trame arm 33 and parts carried thereby is suticient to cause the belt 38 to bear on the row of overlapped folded blanks with suihcient pressure to hold the glued. laps of the blanks in rm contact -while the glue is setting.

Having now described our invention, we claim:

1. Mechanism of thecharacter described, comprising a receiving belt, means for depositing articles thereon in overlapping superposed relationship, a i pressing belt mounted to cause a portion of it to coact with the receiving belt in forming the nip end of a throat traversed by the blanks, and

'means for adjusting the pressing belt'to vary the length of said throat without changing the longitudinal position of the pressing belt. y

2. Mechanism of the character described comprising a receiving belt, means for depositing articles thereon in overlapping superposed relationship, a pressing belt pivotally mounted to gravitate toward the receiving belt, and a positively driven pulley for the outer end ot the pressing belt to keep the acting stretch of said belt taut.

3. Mechanism of the character described, comprising a receiving belt, means for depositing articles thereon in overlapping superposed relationship, means forl exerting pressure on said belt, and means for vertically adjusting an inner portion of said belt.

e. Mechanism ofthe character described lltl@ llt) comprising a receiving belt, means for depositing articles thereon in overlapping superposed relationship, a frame for said belt,

means for pivotally supporting the outer end of said frame, and means for swinging the frame on its pivotal support.

5. Mechanism of the character described, comprising a frame carrying a receiving belt, means for depositing articles on the belt near one end thereof, said frame being positing articles thereon in overlapping superposed relationship, and means for engaging the rear edge of each deposited article to urge said edge downward tcward the receiving belt.

8. Mechanism of the character described, comprising a receiving belt, means for depositing articles thereon in overlapping su-l perposed relationship, and a rotary member having projections to engage the rear edge of each' deposited article and urge it downward toward the receivin belt.

9. Mechanism of the c aracter described, comprising a receiving belt, means for depositing articlesthereon in overlapping su perposed relationship, and a roll having resilient projections to engage the rear edge of each deposited article and urge it downward toward the receiving belt.

10. Mechanism of the character described comprising` a receiving belt, a pressing belt mounted to gravitate toward the receiving belt, means for delivering articles onto the receiving belt, and means for variably delecting that portion of the pressingy belt at the endtoward which the articles are delivered.

11. Mechanism of the character described, comprising a receiving belt, a pressingfbelt mounted to ravitate toward the receiving belt, means or delivering articles onto the receiving belt, and an adjustable roll mounted to bear on the upper surface of the lower stretch of the pressing belt.

12. Mechanism of the character described, Lcomprising a receiving belt, a pressing belt mounted to gravitate toward the receiving belt, means for deliveringl articles onto .the receiving belt, a vertically adjustable roll for supporting, the inner end of the pressing belt, andan adjustable roll mounted to bear echa-nismofr the character described,V comprising a receiving belt, means for de` on the upper surface of the lower stretch of the pressing belt.

13. Mechanism of the character described, comprising a receiving belt, means for delivering articles thereon in. overlapping superposed relationship, a pivoted bar projecting over the receiving belt, a pulley carried byI said bar, and a/pressingbelt running on said pulley.

14. Mechanism of the character described, comprising a receiving belt,means for delivering articles thereon in overlapping superposed relationship; a pivoted bar projecting over the receiving belt, a pulley carried by said bar, a pressing belt running' on said pulley, and driving connections extending along the bar to said pulley.

15. Mechanism of the character described, comprising a receiving belt, means for delivering articles thereon in overlapping superposed relationship, a laterally adjustable pivoted bar projecting over the receiving belt, a pulley carried by said bar, and a pressin belt running on said pulley.

16. echanism of the character described, comprising a receiving belt, means for delivering articles thereon in overlapping superposed relationship, a pivoted bar projecting over the receiving belt, a pulley carried by said bar, a pressing belt running on said pulley, and a'belt vtightener supported by said bar.

17. Mechanism ofthe character described, comprising a receiving belt, means for delivering articlesV thereon in overlapping superposed relationship, a pivoted bar projecting over the receiving belt, a pulley carried by said bar, a pressing belt running on said pulley, and a ccunterbalanced arm supported by said bar and having a roll bearing on the upper stretch of. the pressing belt.

18. In mechanism of the character dei scribed, a platform, means for advancing flat articles in a plane above lsaid platform, a balanced arm carrying a roll above the platform, a belt running over said roll means `for,adjustably .limiting the lower position t which said arm can swing, and means for frictionally driving the belt.

21. In mechanism of -the character described, a platform, means for advancing dat articles in a lane above said platform,

a b elt for deiectmg the articles toward the platform, means for frictionall driving the belt, and a roll on which the ower stretch of thebelt bears.

22. vIn mechanism of the character described, a platform, means for vadvancing flat articles in a plane above said platform, and a frictionally drivenbelt and a roll having peripheral projections, said belt and roll being located to take the advancing articles between them and deiiect them toward the platform.

23. Mechanism of the character described comprising a receiving belt, means for depositing articles thereon in overlapping superposed relationshi and a pressing belt, both of said belts belng vertically adjustable. f,

24. Mechanism of the character described comprising a receiving belt., means for depositing articles thereon in overlapping superposed relationship, and a pressing belt,

both of said belts being laterally adjustable as a unit.

25. Mechanism of the character described comprising a receiving belt, means for depositingarticles thereon in overlapping superposed relationship, a pivoted member, and `a pressing belt supportedA by said pivoted member.

26. Mechanism of the character described comprising a receiving belt, means for depositing articles thereon in overlapping superposed relationship, a pivoted member having a pulley, ya pressing" belt mounted at one end on said pulley, and driving connections extending from the pivoted end of said member to the pulley.

In testimony whereof We have atlixed our signatures.

LEON E. LA BOMBARD. MELVIN H. SDEBOTHAM.