US229970A - Paper-bag machine - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

W. 0. CROSS. Paper BagMaJchine.

Patented July 13,1880.

N-PETERS, PHOTO-LITHOGRAPHER. WLSHINGTON, D 04 (No Model.) 2 Sheets-Shet 2.

W. O. GROSS. I Paper Bag Machine. I No. 229,970. Patented July 13, 1880.

William aqryr,

N- PETERRPNOYULI'IHOGRAPHER, WASHINGTON. D. C.

NITED STATES WILLIAM G. CROSS, OF BOSTON, MASSACHUSETTS.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent -No. 229,970, dated July 13, 1880, Application filed June 2, 1880. (No model.)

To all whom "it may concern:

Be it known that 1, WILLIAM G. Onoss, of Boston, Massachusetts, have invented certain new and useful Improvements in Machines for Making Satchel-Bottom PaperBags, of which the following is a specification.

My invention relates to that kind of satchelbottom paper-bag machines in which is employed a guide-finger to push back a portion of the edge of the paper tube, in combination with a follower for conducting the tube to the guide-finger and a blade for pushing the paper tube under said guide-finger for the purpose of forming the first or diamond fold. Such a machine is shown in Margaret E. Knights Patent No. 116,842, dated July 11, 1871, and in an improved form in my Letters Patent No. 215,578, dated May20, 1879.

In this kind of machine the blank must be at rest during the formation of the second fold, and in order to permit the blank to be thus temporarily stationary it has been customary heretofore to employ an' intermittent feed, which is inactive while the second fold is being formed.

It is my object to so organize and combine the parts of this machine as to do away with the necessity for an intermittent feed movement, and to permit the use of a continuously moving and operating feed mechanism.

To this end I mount the folding devices upon a longitudinally-reciprocating frame, which is arranged andoperated to move forward during the time the blank is at rest upon the folding-table, and to then return to its original position to receive the front end of the paper tube which forms the nextsucceeding blank. With this instrumentality I combine a continuous feed, which unintermittently and uniformly feeds forward toward the folding devices the paper tube. The forward movement of the folding-frame-that is to say, the frame which carries the folding devices--enables me to carry the devices out of the way of the continuously-advancing tube, while the subsequent rearward movement of said frame enables me to bring said devices back into position to receive and act upon that part of the tube which forms the next succeeding blank.

The nature of my invention and the manner in which the same is or may be carried into effect will be understood by reference to the accompanying drawings, in which- Figure l is alongitndi nal vertical central section of so much of a paper-bag machine of the kind referred to as is needed to illustrate my invention. Fig. 2 is a side elevation of the same. Fig. 3 is a sectional detail view to be hereinafter referred to.

" A is the main frame of the machine; B, the reciprocating follower. O is the cutter; D, the feed-rollers. The follower, cutter, former, and feed-rolls are arranged and supported in the main frame, and are operated in substantially the same manner and by the same means as described in the Letters Patent hereinbefore recited, save that the feed-rolls, through the instrumentality of suitable gearing, as indicated in Fig. 2, have a continuous movement of rotation, thus operating to unintermittently and continuously feed forward the paper tube from which the blanks are out and the bags made. Further description of these parts and their actuating mechanism is not necessary.

E is the guide-finger; F, the plate knife folder, so called; G, the side folders; H, the delivery-rolls, and I the vertically reciprocating foldingknife. The parts referred to cooperate with the follower and the cutter in the manner described in Letters Patent hereinbefore recited. The said parts also operate together, and are timed to move with relation to one another, and have the same functions as the corresponding parts shown in my Letters Patent aforesaid. They are also combined with substantially the same mechanisms for actuating them, respectively. They therefore, in the same foregoing respects, require no further description here; but the said parts just referred to are all mounted in or on a sliding carrier-frame, J, which is supported and held in place on longitudinal guideways a on the main frame A, and is caused to move back and forth at the proper times by any suitable known instrumentalit-y, consisting in this instance of the draft-bar K, which is longitudinally slotted at b, so as to straddle the camshaft L, and is provided with a roller stud or projection, 0, bearing against the periphery of the cam d, which is liked to and revolves with shaft L. Springs 0 hold the stud against the cam. Through the instrumentality of these devices there is imparted to the frame J, when the machine is in operation, backward and forward movements, which can be properly ti med and regulated as to length by suitably fashioning the cam 61.

To maintain proper operative connection between the driving or first-motion shaft on the main frame and the folder-actuating mechanisms on the sliding carrier-frame, I employ a transmitting shaft, M, supported at one end in a bearing,f, on the main frame, in which it is free to rotate, but restrained from ,longitudinal movement. At the other end it passes through the hub of a beveled gear, g, in which it can slide freely, being connected. however, with said gear by a spline-andgroove connection, as shown more particularly in Fig. 3. The beveled gear g is carried by and adapted to rotate in a bearing, h, fixed to the sliding carrierframe. The shaft M obtains rotary movement from a bevel-gear, i, which is fixed to it and meshes with a corresponding gear, t", on one of therotating shafts in the main frame, and this rotary movement is imparted, through the instrumentality of gears g and g, to the shaft J in the sliding carrier-frame, from which the various moving parts carried by the carrying-frame are actuated.

The spline-and-groove connection between the gear 9 and the shaft M allows the carrier frame to slide freely longitudinally without interfering with the transmission of power to the folder-actuating mechanism.

In concluding my description of the construction of the machine, I remark that it should contain the usual pasting devices, which, however, I have not deemed it necessary to show in the drawings.

In so far as the action of the folding devices on the blank is concerned, this machine in nowise substantially differs from the other machines hereinbefore referred to, and the follower and cutter are also timed to move relatively to the folding devices substantially in the same way. i

The noticeable difierences between the operation of this machine and those referred to are as follows: The feed, instead of being intermittent, is continuous, so that the tube from which the blanks are successively cut and made into bags moves forward unceasingly. At that point in the operation of the machine at which the feed heretofore was stopped that is to say, when the side folders have taken hold of or are about to take hold of the blankthe sliding carrierframe begins its forward movement, thus getting the blank which is on the table out of the way of the advancing paper tube. The folding devices continue their operation upon the blank during the movement of the carrier-frame, the bag is completed and delivered, and the frame returns to its first position in time to bring the guide-finger in position to receive the next succeeding blank, and so on indefinitely.

Having described myinvention, whatIclaim, and desire to secure by Letters Patent, is

1. In machinery of the kind specified, the combination, with the mechanisms for folding and completing the satchel-bottom, of a reciprocating frame carrying said mechanisms and arranged and operated to move when the blank is at rest on the folding-table, substantially as and for the purposes hereinbefore set forth.

2. In machinery of the kind specified, the combination, with the reciprocating carrierframe and mechanisms carried thereon for folding and completing the satchel-bottom, of mechanism for continuously feeding the paper tube, substantially as hereinbefore set forth.

3. The combination, substantially as hereinbefore set forth, of the continuous feed mechanism, the follower, the former, and the cutter with the reciprocating frame and the folding mechanisms carried by said frame.

In testimony whereof I have hereunto set my hand this 31st day of May, 1880. 7

WILLIAM G. GROSS.

Witnesses:

GILBERT G. HOAG, MILTON RIGGARDI.

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