US1099950A - Skillet-making machine. - Google Patents

Description

R. W. THOMPSON, JR.

SKILLET MAKING MACHINE.

APPLICATION FILED JULY 22,,1912.

Patented June 16, 1914.

3 SHEETSSHEBT 1.

\X/Eesses PLANOGRA R. W. THOMPSON, JR. SKILLET MAKING MACHINE.

APPLIGATION FILED JULY 22,,1912- 1,099,950. Patented June 16,191;

3 SHEETS-SHEET 2.

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. z ima R. W. THOMPSON, JR. 7 SKILLET MAKING MACHINE.

APPLICATION FILED JULY22,1912. 1,099,950, Patented June 16,1914,

3 SHEETS-SHEET 3. v

w IFN VVITEBEEE E51 5 my d 5'1" v I COLUMIIA PLANOGRAIH (10., WASHINGTON, D- C- RICHARD WALKER THOMPSON, JR, OF KENDAL, ENGLAND.

SKILLET-MA KING MACHINE.

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Specification of Letters Patent.

Patented June 16, 1914.

Application filed July 22, 1912. Serial No. 710,924.

To all whom it may concern:

Be it known that I, RICHARD VVALKER THOMPSON, Jr, a subject of the King of Great Britain, residing at Kendal, in the county of Westmoreland, England, have invented certain new and useful Improvemens in Skillet-Making Machines, of which the following is a specification.

This invention has for its object improvements in machinery for making cartons or skillets as they are termed in the trade, namely, cardboard boxes before they are folded up, so as to form a box. These cartons or skillets are sent out absolutely fiat, and are usually formed into boxes by the firm supplying the contents, which are sold in such boxes. In making these skillets, the favorite plan is to cut the blanks, first, and then pass these blanks through scoring, slotting, folding, and gluing machines, and sometimes printing also. By my invention however, the cutting ofi is the last part of the process, the entire process of making the skillets being carried on before one skillet is cut off from the next.

The invention is best described by aid of the accompanying drawings, in which Figure 1 is a vertical sectional longitudinal diagrammatic view of my apparatus; Fig. 2, a side view of the same; Fig. 3, plan View of same; Fig. 4, side view of one part of the bed. The small figures at each end are cross sections of the ends of the bed. Fig. 5, plan view of same; Figs. 6 and 7 diagrammatic views of the motion for giving the intermittent motion; and Fig. 8, view showing detail of cross scoring mechanism.

In these A is a supply roller carrying a Web of cardboard rolled up thereon, and having usually any ordinary friction device not shown in the drawings, to prevent unrolling more than is required. This band as it unrolls can if desired be passed through a printing mechanism of the usual type. This is not shown in the drawing, as there is nothing new in it, it being very common to print from a roll of cardboard or paper in this way before it is cut up into skillets or the like. Very frequently skillets however are not printed by the manufacturer, and the present machine is designed for making such skillets. The band a now passes between two guide rollers a and from thence under a plate B. Against the band under this plate are scored rollers B whereby cross scoring is made; This cross scormg is effected by the revolving cutters B being carried on a stirrup b on a lever I) worked by a cam b reciprocating on a fixed center 6 and driven in any desired manner from the-reciprocating mechanism hereafter described through intermediate shaft T. The band passing this mechanism now comes under the roller D, and between it and the longitudinal scorers d. Where these longitudinal scorers are used to score continuously they are as set forth in the drawing. The web passing on from the scoring wheels, (and there may be several wheels abreast or one following the other,) passes under the usual punching, or slotting device E, which punches the slots 6, shown clearly in Fig. 8. These slots usually bridge over two skillets half the slot being in one skillet, and half the other. It is obvious, however that these slots could be efiected on the same shaft by cutting rollers, male and female, on the same shaft as scoring cutters (Z if desired. From here the band a passes between rollers G, R and V and from here on the band is deflected so as to take a curved or switch-back path. The roller R is a jockey roller and by pressing it down by any desired mechanism it takes up the slack when the skillets are in length not an aliquot part of the distance between T and T, Fig. 2. The band of cardboard now passes between the rollers H H the lower one of which revolves in a glue tank It heated by a gas flame or otherwise h. The lower roller H is of such width and in such position as to gum or glue the edges to the exact shape required to form the skillet. From here it passes between slowly folding over blades or beds I I, whereby the skillet is turned around so as to form a complete ring with the edges coming against each other at the glued portion. This bed is shown in greater detail in Figs. 4 and 5. By this time the glue is tacky and easily sticks. Instead of employing the gluing device for joining the edges of the skillets a stitching apparatus may be used, the anvil 70 being employed also for that purpose.

In order that the width of the skillets may be varied, the beds I adjustably mounted on the guides M and I have an arrangement for holding the web down to the beds so as to insure the proper folding. This arrangement comprises two hand wheels Z each turning two screws Z, Z geared together, which move two presser frames Z l nearer together or wider apart to correspond to the beds. The beds may even be connected to these presser frame arrangements so that the beds could be adjusted at the same time. The bed can be of leather at this point, or other suitable material, and be held firmly by guides M M. Roller L and rods L Ii together with the resistance of the skillet regulate the exact contour of the bed at this point.

The object of having the switch-back bed is this.-I have found that when the web is turned over, if the bed be in a single level plane the edges are so stretched at one point over another that they are very apt to crack and break off at the transverse scoring, but if the web at the same time that it is being rolled over as it were takes a circular or other bend which makes the diameter of curvature of the edge less than the diameter of the curvature of the middlepart, this straining is entirely obviated, and instead of a great and prejudicial strain being brought to bear on the traveling mechanism, and the resultant tearing at the cross scoring, the movement is very easy, and no tearing results. Beyond this point I place two pairs of rollers N and O geared together, and arrange the' pair of rollers O to be driven from an intermediate motion in the following manner. From a crank pin it, is a connecting rod t This by suitable links 25 drives the pawl t intermittently, and this working on the ratchet wheel t revolves the axle t and with it the pulley t which drives the roller 0, consequently when the pawl is moving back over the teeth there is no movement, but only when the --pawl engages the teeth. These parts are better shown in Fig. 6,. In Fig. -6'there is a disk t fixed on the shaft 25 This disk is cut away at parts to allow the pawl 25 to engage in the teeth of the ratchet wheel 15 When however it comes away against the uncut away portion of the disk "the pawl being made broader than the teeth so as to pass over the disk, is kept out of gear by the disk. The distance at which it is kept out of gear can be increased if desired by moving'the disk t radially forward in the direction of the arrow around the ratchet wheel 6 and clamping it the required position by the set screw t which passes through a :slot'in the plate 25 The pawl t riding on the disk t WhGI'BflOt cut away is shown clearly in Fig. 7. While the pawlhas been riding over the teeth, and consequently the web has remained stationary, the scoring devi es, and the guillotine device hereafter described are actuated, their cams allowing them to remain .out of gear at-other times. Continuing on the Web arrives at the guillotine P, shown best in Fig. 1, whereby the skillets are out off. Iv have mentioned this intermittent i1notion bein worked by two pairs .of roller-is,

ihut itis. vious that otherwelllmown forms of pulling mechanism, such as tentering clips, can be adopted to be brought into action by cams, so that the clips shall intermittently clip the band, and carry it forward the exact length of one skillet, and thus leave it quiescent the length of time required for the scoring apparatus and guillotine to work.

In order to allow of different lengths of skillet, and yet have two stationary supports Q, I may arrange the roller R to act as a jockey roller in conjunction with the two rollers V V, to carry the band through a greater length of travel. In this case a vertically adjustable roller R can be arranged for skillets of different lengths so as to 111- sure the right synchronism. I may also at the end of the machine have an ordinary slide and counting devices whereby the skillets are brought down 011 to a bed plate where they are divided up into lots of ten, twelve, twenty, or other numbers, and are ready to be packed, and sent to market in a wellknown manner. In the manufacture of match boxes there can be gluing devices at different points, and a sanding device immediately following the first of these gluing means, so that the sand surface on the match box can be made during the trial of the machine, and of course in these match boxes as a rule cross scoring and slotting are omitted. It is evident that an ordinary wire stitching device can take the place of a gluing arrangement, or both can be used, but I prefer to have a gluing device, as shown.

The cutting knives can be mounted adjustably longitudinally, and the scorers and slotting device be arranged with interchangeable parts so as to increase or diminish the length of the score or the slot. Further, instead of the width of the band being only suflicient for one skillet abreast, it can be made to have three or four skillets abreast, a scoring device at G being arranged to cut the band entirely through so as to separate the skillets at this point. 7 In that case there are as many beds I, as there are skillets abreast.

I have shown the machine driven from two shafts T and T, which are geared together for instance by chain gearing U, but it is obvious that they can be driven from any other part.

I declare that what I claim is 1. In a machine for making skillets from a continuous web, the combination of two shafts mounted in fixed bearings; means for driving the shafts synchronously; an intermittent feed device for drawing the band of skillets through the machine actuated by one of-said shafts; a'cut-ofl' device also actuated by said shaft; a series of scoring, and slotting devices driven from the other of said shafts; fixed guide rollers for the web; a coacting guide roller located between the aforesaid guide rollers and between the scoring and slotting mechanism and the cut-ofi' mechanism and adjustable transversely to the web; and means for fastening said adjustable roller in various adjusted positions to correspond to different lengths of skillet.

2. The improvement in machinery for making cartons or skillets which consists in the combination of a flexible bed arranged to turn over the fiat skillet into the tubular form, and a Switchback in that bed, whereby the increased length of the path of the portion of the edge of the skillets being turned over is compensated by the compression caused by the Switchback.

3. The improvement in machinery for making skillets, which consists of a bed of leather or other flexible material, means for gradually turning the bed and band of skillets over into the tubular form, means for depressing the band of skillets and the bed so as to take a switchback course, means for supporting them at the point where the greatest depression takes place, and means for regulating the extent of turn-over in the bed, substantially as described.

4. In machinery for making skillets, the combination of the rollers NN and HH, with a bed I, and rods V, whereby the bed and the web thereon are obliged to take a switchback form, with the roller L and means for turning over the bed such as the rod L and adjustable guides M.

5. In machinery for making skillets, the combination of a flexible bed'I, and pressers W with the hand devices 1, 1 1 whereby the pressers W can depress the bed with the web thereon, and be adjustable laterally, and thus give a variation in contour to the tube being formed of the band of skillets.

6. In machinery for making skillets, the combination of a flexible bed I, means for turning the same over into a tubular form, means for continuously drawing on the band of skillets, and the fixed arm K supporting an anvil block is inside the tubular portion of the skillet and immediately beyond the bed, whereby the skillet can be sawed immediately after being turned, and while still held in the tubular form.

In witness whereof, I have hereunto signed my name this 28th day of June 1912, in the presence of two subscribing witnesses.

RICHARD WALKER THOMPSON, JUNIOR.

Witnesses:

Ronnnr WM. I-Ircomson, HERBERT DINSDALE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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