US363662A - Machine for making paper trays - Google Patents

Description

6 Sheets-Sheet 1.

(No Model.)

6 W. S. MCKINNEY. MACHINE FOR MAKING PAPER TRAYS.

No. 363,662. Patented May 24, 1887.

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(No Model.) 6 Sheets-She'et 2. W. S. McK-INNEY. MACHINE FOR MAKING PAPER TRAYS.

No. 363,662. Patented May 24, 1887.

N. PEYERS. Pbowumo n hu. Washington. D. C.

(No Model.) s Sheets-Shet 3.

W. S. MCKINNEY. MACHINE FOR MAKING PAPERYTRAYS.

Patented May 24, 1887.

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(No Model.) 6. Sheets-Sheet 4.

. W. S. MCKINNEY.

MAGHINE FOR MAKING PAPER TRAYS. No. 363,662 Patented May 24, 1887 anna" (No Model.) 6 Sheets-Sheet 5.

W. S. MCKINNEY. MACHINE FOR MAKING PAPER TRAYS.

(No Model.) I Q 6 Sheets-Sheet 6. W. S. MCKINNEY.

MACHINE FOR MAKING-PAPER TRAYS. No. 363,662. Patented May 24,- 1887.

UNITED STATES PATENT OFFICE.

\VALTER S. MCKINNEY, OF BINGHAMTON, NEW YORK.

MACHINE FOR MAKING PAPER TRAYS.

SPECIFICATION forming part of Letters Patent No. 363,662, dated May 24, 1887. Application filed February 24, 1586. Serial No. 193,034. (No model.)

To aZZ whom it may concern.-

Be it known that I, WALTER S. MCKINNEY, of Binghamton, in the county of Broome and State of New York, have invented a new and useful Improvement in Machines for Making Paper Trays; and I do hereby declare that the following isa full, clear, and exact description of the same.

My invention is an improved machine for making trays out of paper and similar material of that class in which the blank is cut from a sheet or roll of paper folded and fastened to form a completed box.

The machine in which I have embodied my invention is organized to take the paper from the roll, to cut the blanks, and to form them into the shape of the trays, and to insert the fastening devices, consisting of bridge-tacks formed out of wire, thus making a complete tray, such as those ordinarily used by grocers and market-men for holding butter and like articles. 4

Both the general principles of the invention and the details of construction are shown in the accompanying drawings, in which- Figure l is a plan view of the formerdies designed for shaping the blank, the section of the main frame ofthe machine being taken on line 3/ y of Fig, 2; Fig. 2, a vertical section on line 00 x of Fig. 1. Fig. 3 is a plan view of the blank-cutting mechanism; Fig. 4, a section on line A A of Fig. 3. Fig. 5 is aperspective view of the knife. Fig. 5 is a front view of the knife. Fig. 6 is a face view of the die in which the knife works. Fig. 7 is a plan view of the feeding-rollers. Fig. 8 is an elevation of the driving feed-roll, the immediate driving mechanism therefor being also shown. Fig. 9 is a longitudinal section through the driving feed-roll, showing in section the clutch mechanism for driving the same at one end and the pawl for preventing backward movement at the opposite end. Fig. 10 is an end view of the said roll with the pawl represented in Fig. 11 is a face view of the opforming and driving the bridge-tacks. Fig. 15

is a view taken on linear wofFig. 14. Fig. 16 isa top view of the former-die, and this figure also includesa detail sectional view of the clincher and a portion of the former die, representing the mannerin which the ends of the bridge- Fig. 17 is a detail bottacks are turned in. tom plan view of aportion of theformer, taken on line a a, Fig. 14. showing thegroovedbending-pluugers and the opening through which parts being in the position assumed by them after the tack has been formed and driven. Fig. 21 is adetail view. Figs. 22 and 23 represent a completed blank and the end of the Web from which it was severed. Figs. 2;, 25, and 26 are respectively a side, end, and plan view of the completed article. Fig. 27, Sheet 2, shows an edge view of the blank as it is just entering the former, illustrating the manner in which the folding is done.

Referring first more particularly to Figs. 1 and 2, the frame is shown therein, at A, placed on various parts thereof, which frame supports all the working parts of. the machine.

These working parts are driven by ashaft, B,

which has a driving-pulley on its lower end and its bearings in the frame of the machine.

On the upper part of the frame are two feedrollers, I I, which draw the paper from the roll D and feed it to the cutting mechanism. The feed-roller I is mounted in bearings movable horizontally, which bearings are pressed forward by springs 99, adjusted by set-screws 66, and the bearing-blocks are shown at 65, these parts being represented in Fig. 7 on an enlarged scale. This roller turns freely in its bearings, the power being applied through the roller 1, to which the power is applied intermittingly, this movement being required to Figs. 8 to 13, inclusive, is devised for the purpose. The roller '1 (shown in section in Fig. 9) is loose upon the shaft 0. The shaft is driven by a rack-bar, e, geared into a pinion, 43, on the end of the shaft 0.

Upon the shaft, and within the roller, is a vdisk,f, keyed to the shaft which carries the of the rack-bar e, a clutch, a, is provided, pivoted, as shown, upon an arm, I), and held to action by means of a spring, 0.

Mechanism is provided in this connection for the purpose of allowing this movement to be imparted by hand for starting or adjusting the end of the roll or automatically in the operation of the machine. On theframe, in the rear of the roller 1, is pivoted a lever, 40, on a pin, 46. This lever is connected to an offset on the rack-bar e bya link, 45, connected to the lever outside of the pivotal point.

On the inner end of the lever is an upright stem carrying a friction-roller, 36, which engages with the groove in the earn 9 on the upper end of the main shaft B. This cam is set so as to draw back the rack-bar immediately after the paper has been fed forward and while the cutting mechanism is operating and to move the rack-bar back again to feed forward for a new blank as soon as the preceding one is out of the way. The handle on the end of the lever 40 is for the purpose of allowing'this operation to be performed by hand, as above explained. In order to take the strain of the web of the paper from the roller I, the roller K is mounted in bearingsj ust above the roller I.

Immediately below the roller I isa cuttingdie, G, with its face in line with the web descending vertically below the rollers. This die has a smooth face, but is made with an opening of the form shown by the outer lines, 70, of Fig. 6. This line shows accurately the contour of the opening, but not in the proper proportion, the width of the opening being exaggerated to show more plainly. The object of this opening is to cut the ends of the adjacent blanks from the roll, as shown at M N of Figs. 22 and 23. The edge of the knife is shown by the inner lines, 71. The knife, as shown in Figs. 3,5, and 5, is in the form of a punch, andfits accurately in the aperture or opening. This opening runs through and flares outward into a recess in the rear part of the die, as shown in dotted lines 3, Fig. 3. The cutter has a face of about three-sixteenths of an inch in thickness on all the parts, which simply sever the paper and cut the slots therein, as shown in the blank. The triangular piece 1 at the ends of the cutter is adapted .to punch out the triangular edges of the web,

.in order to remove the corners from the blank.

After the end of the web is fed down across the face of the die G, the cutter is brought up and punches out the portions of the paper in the shape of the cutterand pushes them into the aperture, through which they are forced by the action of the cutter and drop down the chute 6, by which they are carried away from the machine. The cutter is carried on the front end of the carriage H, which slides in guideways H, on which it is held by plates h, Figs. 2, 3, and 4. It is adjusted accurately by means of adjusting-screws 73, acting on bearing-strip 74. resting against the edge of the carriage. The carriage is connected to the cam 7 on the shaft B by means of an arm, 31 32, bolted to the carriage and having an intermediate adjusting-screw, 30. This cam 7 is timed to operate the cutterintermittingly after the feed-rollers have moved down the end of the. paper into place by the die G.

Below the die G and in line with the face of it are guiding-grooves P, fitted to receive the edges of the blank and to guide them down to the former. These grooves are shown in Figs.

1 and 2. The blank is being severed from the web at the same time that it is formed by the cutter, and drops automatically when the cut ter recedes from the cutter-die, the position of the blank in front-of the former being determined by any suitable stop arranged in the guides P, as at 7, Fig. 1.

The former (shown in position at R in Fig. 2 and on a larger scale and detached in Fig.

. 14) is located just in rear of the plane of the grooves and of the position at which the blank is stopped. kind of tray or box to be made. The form shown in the figure is that of a flaring tray.

The former is supported upon a bracket, r, which is a part of the main frame.

In front of the former, and upon a horizontally-sliding plate, 21, is a former-die, E, corresponding in shape to thatof the former, and arranged to advance to and recede therefrom, and, when it advances, to carry in the blank and press it into shape between its surface and that of the former. The former-die is operated by means of a lever, 56, Figs. 1 and 2, connected by an outside rod to a lever, 55, worked by a pin on its inner end, which projects into a groove in the cam Son the main shaft. This is timed to operate the formerdie as soon as'the blank has dropped into place from the cutter. The former-die remains in place in the former long enough to allow the mechanism to act for inserting the bridgetacks. These tacks are formed of wire, which is inserted horizontally into a groove, 75, in a tack-retainer, 76. (Shown in Figs. 2, 14, 15, and 19.) This retainer is located in a pocket upon the upper and lower ends of the former, as shown in place in Fig. 2, but more clearly in detail in Fig. 14. The wire is fed, as shown in Figs. 1 and 15, by arms 77, which move simultaneously, by mechanism hereinafter described, and feed the wire at each forward Its shape must correspond to the movement, and an accurately-determined distance in the groove 7 5 across the bearing-face of the retainer.

The arms are formed with notched ends and spring-pawls, as shown by thevdetached view at 78, Sheet 1, to grip the wire in their forward movement, but to slip upon it in their backward movement. They place the wire beneath the lower ends of the plungers 79, (shown in Figs. 14 and 15,) which slide in ways on the side of theformer and are moved by arms 25, pivoted at 80.

Upon the outside of the formers and in line with the grooves in the tack-retainers 76 are secured tubes 0, which serve as holders for the wire after sufficient length has been out off to form a tack, as hereinafter explained. In order to prevent the withdrawal of the wire from these holders while the arms 77 are mov' ing back for a new grip on the wire, the outer and upper halves of the tubes are removed, ex-

posing the wire to the action of a spring-pawl, d, pivoted, as shown, so as to bear upon the wire and clutch the same, should there be any tendency toward backward movement. These tubes also act to accurately guide the ends of thewire to the grooves in the tack-retainers in the forward movement of the arms 77-. One of the plungers 79 acts as a cutter to sever the wire, and both bend down the ends to form a staple or bridge-tack, as shown in Fig. 19. During this time the middle part of the staple is held in the groove of the retainer76,

which is pressed against the wall of the cavity in which it rests by a spring, 2, by which it is held, as shown in Fig. 14. From the bottom of this recess a narrow passage extends.

through to the interior;of the former, just fit ted to let the tackpass through, one face of it 1 being flush with that face of the cavity against which the retainer presses.

On each side of the retainer, just outside of the cavity in which the bridge-tack is formed,

are the wire-bending plungers 79. These slide in grooves, as explained, and they are yoked together and operated by an arm, 25, pivoted at 80. This arm extends back into a groove in the cam 16, this description referring to the upper set of plungers. It will be observed that these plungers move in line with the wire, which, when in place, extends. directly across the ways in which the plungers move and a little way above the lower ends of the ways, the distance being suflicient to allow the ends of the wire to be bent down and form the prongs of the bridge-tacks. The cam 16 is timed to force down the plungers v79 immediately after the feeding forward of the wire and while the boxes are beingshaped in the former. After the prongs are thus bent down the tack is held in the groove 75 of the retainer 76, in line with the opening which extends to the interior ofthe former. The bending-plungers have each a'groove in the inner face thereof, and strike the wire at the grooves,

so that while these plungers, as in Fig. 19, are

driven, the bending-plungers remaining down during this operation.

The position of the plunger-ways and the opening in which the tack lies when formed are shown in Figs. 17 and 18, the plunger-Ways there being marked 100,and the opening 101, lyingbetween them. After the tack is formed the next operation to be effected is to drive it into the paper. This is efl'ected by the driving-plunger 102, which slides in the rear face of the cavity in line with the opening on the former'in which the bridge-tack lies. The

edges of this plunger (which is thin) run in the grooves above described in the inner faces of the plungers 79. The driving-plunger is operated by an arm, 27, pivoted at 80 and operated by the cam 16,whieh operates the bending-plungers 79. The free end of the lever 27 extends into the groove in the cam on one side of the lever'which operates the bending-plunger, so as to be operated in the same manner and immediately after that plunger is operated. The driving-plunger, in its forward movement, first strikes against the inclined face of the retainer-piece.76, and pushes back against its spring, causing it to leave thetack. The prongs, which are bent into grooves inthe inner face of the plungers 79, are retained in place, and when the plunger further advances it strikes the tackand drives it forward through the paper. The bending-plungers and the driving-plungers on the other or lower side of the former are the same as those just described. The lower bending-plu ngers are carried on the lever 21 and the driving-plunger on the lever 22, both worked by a cam, 5, similar to the cam 16. The driving-plunger is connected by alevcr, 23, corresponding to the lever 28, which connects the other plunger to the lever 27. The corresponding plungers work simultaneously on both sides. The arrangement of the driver in grooves in the bending-plungers serves another important purpose. Under some circumstancesthe wire of the tack is liable to break and remain in the grooves on the plunger. In such cases the plunger serves as a clearer and removes the pieces of wire, thus overcoming a serious defect.

It will be observed that the parts ofthe blank are lapped to form the end of the boxes or trays, as shown in Fig. 25 The inwardly-inclined sides of the former cause the sections 103 to lap on the outside of the central section, 104, andto effect this action a projecting edge is provided on the former, which strikes the central section, 104, of the blank and causes in line with an opening through which the bridge-tack is driven when the plunger E is pressed in place in the former. The clinchers are retracted by springs 106, and have on their rear end friction-rollers which bear against the head of the mandrel c. This mandrel moves in the same line as the forming-plunger and guides therein. It is connected by a link, 107, to a lever, 108, pivoted on the shank of the forming-plunger. The upper end of this lever, when the forming-plunger is forced to itsseat, strikes against a stud, 109, on the lever 10, pivoted on the. main frame, and shown in Figs. 1 and 2, This lever is connected by an arm, 11 and 12, to a lever, 13, also pivoted on the main frame, the lower end of which extends down in line with a stud, 58, on the upper part of the cam 8 on the main shaft,which has been heretofore described as operating the'formingplunger. The stud 58 is set so as to strike the lower end of the lever 13 as soon as the forining-plungeris forced to its seat in the former. This pushes the lever 10 to the left 'of Fig. 2 while the upper end of lever 108 is bearing against the stud 109. This forces forward the mandrel e, the inclined forward faces of which rideagainst the rollers on the ends of the clinchers and force them forward to bend the prongs of the tacks. The action of the clinchers is regulated to suit variations in the thickness of the material by means of a spring, Fig. 21, placed in the cylindrical portion 12 of the operating-bar. The bar 11 passes loosely through the cylindrical portion and bears upon the spring. This construction allows the stop 109 to yield if the material worked upon is very thick.

On the sides of the holes in which these clinchers work are guide-grooves 110 for the ends of the tacks, in which they project when driven home, and the end face of the clincher is formed so as to bend the ends of the tacks inward, as shown in Figs. 16 and 20. The springs 106 throw back the clinchers with the mandrels as soon as the plunger E startsback.

It-will be understood that the clinchers on both sides arealike and correspond to the tack-driving mechanism on both sides of the former. On the upper edge of the former the spur 111 projects to catch over the upper edge of the box or tray and prevent it from sticking to the forming-plungers. In the former is a discharge-plunger, 112. Itis normally pressed forward by a spring, 113, which yields when the forming-plunger is pressed to its seat, but startsforward again as soon as that plunger retreats, and as it starts forward discharges the tray and throws it down a chute, 6. The arms 77, which feed the wire, are fixed to'an upright-rocking shaft,f,which has an arm on .its lower end and pin extending into agroove on the cam 1 on the main shaft, and leaves time to feed the wire forward immediately after the preceding tack has been driven home and the plungers which form and operate it are retracted.

Referring particularly to Fig. 23, which illustrates the blank, it-will be observed that the slots which separate the portions 103 and 104 are formed by cutting out a narrow strip. This leaves the parts in better condition to fold one upon the other than if the parts were separated by a simple cut-formed by a sharp edge, and besides, the blunt cutter, heretofore described, acting as aplunger, clears the chips and discharges them and prevents them from falling and thus obstructing the blank as it descends to the former.

I have specified paper as the material to be used, but I include also pulp-board, strawboard, and other similar material.

It will also beunder'stood that instead of the reciprocating cutters I may use cutters on the rolls, but not with so good effect.

I claim as my invention-- 1. In combination, a pair of feed-rolls operating intermittingly, a reciprocating cutting and forming die for the blank, a former and reciprocating former-plunger,and a guide to conduct the completed blank from the cuttingdie to the former, substantially as described.

2. In combination, feeding mechanism, substantially as described, for-the paper, forming 1nechanisn1,substantiall y=as described, for shaping the box or tray,anda cutting mechanism between the mechanisms specified, consisting of a die having an aperture in the form of the part to be removed from the web in forming the blank and a knife of corresponding form having blunted edge and fitted to enter the said aperture, mechanism, substantially as described, for reciprocating said knife, and devices, substantially as described, for conducting the:-blank,when cut, to -the former,substantially as described. i 3. In combination with the devices,substantially as described, forfeeding the paper and cutting out of blanks, aguiding mechanism, substantially as-described, for the blanks, between the cutting mechanism and the former, a former having the shapeof the exterior of the box or tray to be made, devices, substan tially as described, for feeding the wire to the former, devices, substantially as described,carried by the former for holding the wires for cutting and bending them, devices, substantially as described, for driving the wires through the paper, also carried by the former, and the former plunger carrying the clinching device, substantially as described.

4. In combination with the former,a formerplunger, E, and mechanism, substantially as described, for reciprocating the same, clinching-plungers carried by'said plunger E,amandrel, e, mechanism, substantially as described, for advancing it when-the plunger has reached its seat to actuate the clinching plungers, and springs for retracting the plungers, all substantially as described.

5. In combination with the former and its plunger and with mechanism, substantially as described, for'forming and driving the bridgetack, the-clinching-plungers, the mandrel for operating the same, and the lever 108, connected to the mandrel, the levers 10 and 13, In testimony whereof Ihave signed my name and the connecting-rod and the stud 58 on the to this specification in the presence of two subcam 8, substantially as described. scribing witnesses.

6. In combination, the former and plunger,

5 the cutting-die arranged above the said former WALTER S. MCKINNEY.

and adapted to sever the blank from the web I and to punch out the said blank, and a guide Witnesses: i leading to the former, whereby the completed F. L. MIDDLETON, blank drops by gravity into position for fold- CHAS. L. STURTEVANT.

1o ing, substantially as described.

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