US847977A - Feeding device for paper. - Google Patents

Description

PATENTED MAR. 19, 1907.

1 M. H. BALLARD.

FEEDING 1mm FOR PAPER.

APPLICATION FILED 0OT.2, 1905.

UNrr n STATES PATENT onrion.

MILTON H. BALLARD, or LYNN, MASSACHUSETTS, ASSIGNOR To TRIPP FRUIT WRAPPING MACHINE COMPANY, or LYNN, MASSACHUSETTS, A

CORPORATION OF MAINE.

FEEDlNG DEVICE FOR PAPER.

Original application filed February 13, 1904,

To all whom it may concern:

Be it known that I, MILTON H. BALLARD, of Lynn, county of Essex, State of Massachusetts, have invented an Improvement in Feeding Devices for Paper, of which the fol: lowing description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This application is'a division of my application, Serial N 0. 193,392, filed February 13, 19041. r I

In certain forms or types of wrapping-mechinessuch, for instance, as shown in Letters Patent No, 472,202, dated April 5, 1892 paper in strip form is drawn from a roll by means of devices whichact to feed it to the severing devices, which sever the strip, and thereby produce wrappers of suitable size to be used for wrapping oranges and other things. The feeding devices act intermittingly and also rapidly, and when they start from a position of rest they violently pull upon the strip of paper and suddenly start the paper-carrying roll revolving, and when they cease said roll continues to revolve for a short period of time by momentu'n1,unreeling aconsiderable length of paper. An attempt has been made to check rotation of the papercarrying roll when the intermittinglyoperated means employed to draw ofi the paper cease to operate and to take up the slack paper incident to the rollcontinuing to revolve for a short period of timea s, for

instance, as shown in Letters Patent Ne.

516,136, dated March 6, 1894-wherein a locking device is provided for engaging, and thereby suddenly checking, rotation of the roll, and a take-up device is also provided for taking up the slack paper, the locking device being operated by the take-up device. In practice, however, this means isobjectionable, for the reason that the paper-carrying roll is free to revolve until suddenly stopped and acts during such time to unreel the aper, and as a result more aper is unree ed than can be taken up by t e take-u device during the short time it is permitte v to act, as the locking device, which is 'o erated by the take-up device, will engage the rolland stop it suddenly with considerable shock and jar before the slack is all taken up.

Specification of Letters Patent.

Patented each 19, 1907.

Serial No. 193,392. Divided and this application filed October 2, 190a Serial No. 280,909. i

This invention has for its object to provide means for taking up the slack paper incident to the paper-carrying roll continuing to revolve after the feeding-rolls or other intermittingly-operated means which may be employed for drawing the paper from the roll have ceased tooperate and to hold, said slack paper tent, and to provide brake mechanism for the paper-carrying roll, which begins to act as soon as the intermittingly-operated means ceases to operate, to slowly checkrotation of said roll, and by thus retarding the roll to reduce the amount of slack to the minimum. Some slack is very desirable, for the reason that the feeding-rolls or other intermittingly-operated means are thereby permitted to more easily start from a position of rest; but by the employment of my invention the slack is reducedto the amount re.- quired for this purpose and is held taut.

Figure 1. shows a suflicient portion of a wrapping-machine to illustrate the paperfeeding devices embodying my invention,

the full lines representing the feeding devices at rest and the brake applied to the papercarrying roll and the slack all taken up by the take-up device and held tent and the dotted lines represent the paper while being drawn from the rb ll acting at such time to apply a tension to or upon the strip and the roll being free to revolve. Fig. 2 is a plan view of the paper-carrying roll, brake mechanism therefor, and the take-up device, and Figs. 3 and 4 are details of the intermittingly-o' erated means which may be employed for rawing the paper from the roll. A

The intermittinglyoperated means by which the papler is drawn from the paper-car rying roll is erein shown as a pair of feeding-rolls and means for. operating them, such intermittingly-operated means being shown herein merely for the sake of illustrating my invention, as, so far as my invention is con- 'cerned, any other form of intermittingly-operated means may be employed.

, the take-up device.

41 represents the upper roll, which is sup ported in suitable bearings and has secured to it at one end a toothed gear 51, and 42 represents the lower roll, which is also supported in suitable bearings and has secured to it at one end a toothe'dgear 52. The gear 52 engages IOO ' bearings.

oosely mounted on the shaft of the lower roll, bearing one or more pawls 58, which engage the teeth of a ratchet'-whee'l 59, whichis'secured to said roll, and said pinion 53 is'en a ed by a rack 54, which is supported by suita le The rack 54 is loosely connected at one end' to an upright bar 55, pivoted at its lower end to the main frame. Near the lower end of the bar 55 a lateral extension 56 is provided, having a curved slot, and a bar 57 is adjustably connected at one end to said slotted extension 56, its opposite end being connected to an eccentric on the main shaft f As the shaft f revolvesthe bar 57 is reciprocated and the rack-bar 54 is correspond-- ingly moved, and the feeding-rolls or other intermittingly-operated means are operated to draw the paper from the paper-carrying roll.

'5? represents the paper-carrying roll, the shaft of which is journaled in suitable bearings on the frame, and to said shaft at one end of the roll a brake-wheel 28 is secured. Abrake-band 35 is provided for said brakewheel, one endof which is attached to a fixed point on the frame close to the'brake-wheel, as at 36, and the other end is attached to one end of a short bar or pin 29, which extends through a hole in an arm 30, which is pivoted at 31 to the frame at a point remote from the point of attachment of the brake-band. The brake-band is made long enough to partially surround the brake-Wheel, and the bar or pin 29 loosely fits the hole in the arm, so

that it is free to slide therein or when held provided, which surrounds the bar, bearing at one end against the arm 30 and at the other end against an enlargement or shoulder which is formed or provided at the extremity of the bar. The free end of the brakeband is thus yieldingly connected with the arm 30. The arm 30 is movable on its pivot toward and from the brake-wheel, having a rising-andfalling movement, and operates to wind the brake-band upon the brake-wheel when falling and to unwind it therefrom when rising, and when the brake-band is wound upon the brake-wheel said arm continues to fall, compressing the spring 37, thereby operating to apply a gradually-increasing pressure upon or to the free end of the band.

At the opposite end of the paper-carrying roll a similar pivoted arm 30 is provided, and the two arms 30 are joined to ether by a rod or bar upon which a roll 32 is free to revolve. This roll serves as the take-up roll for the slack paper and together with its support forms the take up device. The strip of paper from the paper-carrying roll passes under the take-up roll 32, thence over a roll Between the end of 33, supported infixed bearings on the frame, and t ence to the intermittingly-operated means employed for drawing the paper from the paper-carrying roll. The operation is as follows: As the feeding rolls or other intermittingly-operated means start from a osition of rest the slack paper, which is held taut by thetake-up device, is drawn up, lifting the take-up roll and moving the arms 30 on their pivots, and thereby unwinding the brake-band from the brake-wheel 28 and leaving the paper-carrying roll free to revolve as the paper is drawn from it. 'As soon as the intermittingly-operated means cease to operate the paper-carrying roll continues to'revolve by momentum; but the take-up roll 32,v which is supported in elevated position by the paper, settles down by gravity and'takes up the slack paper, the arms 30 moving on their pivots. The brakeband' is woundupon the brake-wheel and pressure applied to its free end'by the gravitating movementof said take-up device. The pressure upon the brake-band and its area of contact with the brake-wheel is slight at first, but suflicient to retard the roll, and as the gravitating movement of the take-up device continues the areaof contact of the brake-band with the brake-wheel gradually increases until said brake-band is entirely in engagement therewith, as shown in full lines, Fig. 1, and then the weight of the take-up device acts upon and compresses the spring 37, and thereby acts gradually to increase the pressure of the brake-band upon the brakewheel. The parts soon come to rest and the slack produced is all taken u by the take-up device, so thatat all times t e paper is held taut or under tension. It will be seen that the brake mechanism thus described is accumulative, acting with a gradually-increasing force, and that it begins to act when the take-up device he s to fall, and, furthermore, it Wlll be seen fil s/l] the take-up device is controlled or operated by the means employed for drawing off the paper and also that said device serves as the operating means or device for the brake mechanism.

Brake mechanism for th'epaper-carrying roll, which operates accumulatively to gradually retard and finally stop the roll, as contrasted to a positive locking device, is an important feature of my present invention, and

so, also, is the take-up device, which serves to take up the slack paper and also to hold the slack paper taut, and also constitutes the Having thus described my invention, what I I claim as new, and desire to secure by Letters to thereby retard the brake-wheel by a gradu ally-increasing force corresponding tov the adually-increasing area of the band in contact therewith, the operation of said means being controlled by t e web of paper drawn from the roll, substantially as described. v

2. In a paper-feeding device the combination of a pa er-c arrying roll having a brakewheel, a bra e-band attached at one end at a point near the brake-wheel, and means, connected with the free end of said band, for holding it taut, and for winding it, while thus held taut, u on said brake-wheel to thereby retard the brake-wheell by a gradually-increasing force corresponding to the gradually-increasing area of the band in contact therewith, and for subsequently applying a gradually-increasing pressure to said band, the operation of said means being controlled by the web of paper drawn from the roll, substantially as described.

3. In a paper-feeding device, the combination of a paper-carrying roll having a brakewheel, a brake-band attached at one end at a oint near the brake-wheel and adapted to e-woundupon said brake-wheel to thereby act with a gradually-increasing force, a pivoted arm to which the free end of said brakeband is attached and by which it is held taut and moved ina circularpathv about the brakewheel while winding it thereon, and a pa erengaging roll borne by said arm adapte toengage the web of paper and thereby control the movement of said arm, substantially as described.

4. In a paper-feeding device, the combination of a paper-carrying roll having a brakewheel, a brake-band attached at one end at a point near the brake-wheel and adapted to e wound on said brake-wheel to thereby act with a gradually-increasing force, a pivoted arm to which the free end of said brake-band is yieldingly connected and by which it is moved in a circular path about the. brakewheel while winding the brake-band thereon,

and also by which a gradually-increasing pressure is applied to the brake-band when the latter is wound upon the brake-wheel and a paper-engaging roll borne by said arm adapted to engage the web of paper to thereby control" the movement of said arm, substantially as described.

5. In a paper-feeding device, a paper-can ryin roll having a brake-wheel, a brakeban one end of which is attached to a fixed I point close to the brake-wheel, and a rising-- and-falling member to which the free-end of said band is yieldingly connected, which is constructed and arranged to wind said band upon the brake-wheel when falling, and to vunwind it therefrom when rising, and also to apply a gradually-increasing pressure to the free-end of said band when the latter is Wound upon the brake-wheel, and a paper engaging roll borne by said member adapted to engage.

the paper drawn from the paper-carrying roll and thereby control the movements of said member, substantially as described.

j 6. In a paper-feeding device, a paper-carrying roll having a brake-wheel, a brakepoint close to the brake-wheel, and a risingand-falling member to which the free end of said band is yieldingly connected, which is constructed and arranged to wind said band upon the brake-wheel when falling, and to unwind it therefrom when rising, and also to apply. a yielding pressure to the free end of said band when the latter. is wound upon the brake-wheel, and a paper-engaging roll borne by said member adapted to engage the paper drawn from the paper-carrying roll and thereby control the movements of said member, substantially as described.

7. In a paper-feeding device, a paper-carband, one end of which is attached to a fixed i rying roll, having a brake-wheel, a brakeband attached at one end at a point near the brakewvheel, an arm extending from one side of saidpaper-carrying roll to the opposite side thereof having a paper-engaging roll at one end adapted to engage the web of paper near the paper-carrying roll and having its opposite end pivoted at a point remote from the brake-wheel and from the point of attachment of the brake-band, the free end of saidbrake-band being connected to said arm at an intermediate point whereby the brakeband is wound upon and unwound from said brake-wheel by the arm moving on its pivot and moving the free end of the brake-band in a circular path about the brake-wheel, substantially as described.

8. In a paper-feeding device, a paper-carrying roll havinga brakewheel, a brakeband, attached at one end to a point near the brake-wheel, an arm having a paper-engaging roll, pivoted at a point remote from the brake-wheel and from the point of attachment of the brake-band, to which. the free end of said band is connected, and by which the brake-band is wound upon and unwound from the brake-wheel, substantially as described.

9. In a paper-feeding device, a paper-carrying roll having a brake-wheel, means for drawing the paper from the roll, a pivoted arm bearing a takeup roll, a bar slidably connected with said arm, a brake-band for I said bar, and a spring on said bar between "the arm and the end of the bar, substantially i as described.

10. In a papenfeeding device, a paper-carrying r011 having a brakewheel, means for drawing the paper from the roll, a pivoted arm bearing a take-up roll, a bar yieldingly supported by said arm, a brakeband for said brake-wheel, one end of which is attached to a fixed point and the other end to said bar, substantially as described.

11. In a paper-feeding device, a papercar-- rying roll having a brake-Wheel, a pivoted arm havlng a paper-engaging roll for engageeaew ing the web of paper drawn from the papercarrying roll, a bar slidably connected with said arm, a spring acting to thrust said bar outward, and a brake-band for said brakewheel, one end of which is attached to a fixed point and the other end is attached to said sliding bar, substantially as described.

In testimony whereof I have signed my name to this specification inthe presence of "two subscribing Witnesses.

MILTON H. BALLARD. Witnesses:

B. J. Novas, H. B. DAVIS.

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