USRE16897E - Bag closing machine - Google Patents

Description

1'? Sheets-Sheet 1.

Original Filed Sept. 26. 1922 T. ALLATT March 13, 1928, Re. 16,897

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BAG CLOSING MACHINE Original Filed Sept. 26. 1922 17 Sheets-Sheetl l5A T. ALLATT BAG CLOSING MACHINE M a'rch 13, 1928.

Original Filed Sept. 17 Sheets-SheetA 16 T. ALLATT March 13 1928 BAG CLOSING MACHINE Re. 16,897

original Filed sept. 2e. 1922 17 sheets-sheet 17 num uuml' Mmm 1||||l|||1 Suva/woz @3kg/ @Ho/mam 5 Letters Patent' No. 1,395,612,

0"pended claims, without 50 vation of the machine, looking Reissued Mar. 13, 1928.

UNITED STATES THOMAS ALLATT, F W TO MILLIE PATENT Re. 16,897A

PATENT OFFIC ESTFIELD, -NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS,

HOLDINGn C0. INC.,

0F NEW YORK, N. Y., A CORPORATION 0F BAG-CLOSIN G MACHINE.

Original No. 1,637,509, dated August 2, 1927, Serial No. 590,622, led September 26, 1922. Renewed October 23, 1926. Application for reissue The present invention relates to improvements in machines for closing bags. ItI pertains more particularly to a machine for closing bags oi.l the typedescribed in U. S.

granted to Benjamin Hirschhorn on November 1, 1921. In the said patent a bag is described, constituting a cartridge for percolating oil extracting the flavor from tea-leaves or coiiec,

l0 said cartridge comprising a bag having its mouth drawn into folds or puckered, in conibination with a metal strip that encircle-s and compresses said folds. The metal strip serves also to attach to the cartridge a string, to the free end of the latter' being secured a handle.

The main object offthe present invention is to provide a simple and easily operable mechanism, vwhereby the mouth of an already tilled bag is closed by puckering the saine and a )plying thereto a metalband, in the form o a ring, that embraces the puckeied portion-of the bag, so as to prevent escaping of the contents.

Another object of the invention is to provide a bag closing machine of the character mentioned, which is automatic in its operation.

lVith these and other objects in view,4

which will more fully appear as the nature of the invention is better understood, the saine consists in the combination, ari-'angeinent and construction o'tI parts hereinafter described, pointed ont in the appended claims and illustrated in the accompanying drawings, it being understood that many changes may be made in the size and proportion of the several parts and details of construction within the scope of the apdeparting from the spirit or sacrificing any ot' the advantages of the invention. I

One of the man;1 possible embodiments of the invention is illustrated ii. the accom- 45 panying drawings, in Wliich:-

Figure l is a top plan view' of av bag closing machine constructed in accordance with the present invention; Fig. 2 is a side elevation thereof; Figure 3 is also a Side elefrom the opposite side, on a smaller scale; Fig. 4 is a rear elevation of the machine; Fig. 5 is a filed January 17, 1928. Serial No. 247,433.

section taken on line 5`5 of Fig. 1; Fig. 6 isla. sect-ion taken on line 6- of Fig.l 5; Fig. 7 is a, section taken on line 7-7 ot' Fig. 1; Fig. 8 is a side elevation of the metal strip feeding means and the elements cooperating therewith, on a larger scale; Fig. 9 is a front elevation ot' the detail shown in Fig. 8; Fig. 10 is a top plan view, on a larger scale, of a portion ot' a machine; Figs. 11 and 1:2 are similar views ot' the saine portion, the elements being shown in other positions; Fig. 13 is a perspective View of the bag puckering mechanism and the elements c`o-operating therewith; Fig. 1l is a perspective view of the same elements, they being shown in other positions; Fig. 15 is a perspective view of the bag trimming mechanism,- Fig. 16 is a perspective view of the nieta] strip cutting device and the elements co-opei'ating therewith; Fig. 17 is a perspective view of a detail of the device shown in Fig. 1G; Fig. 18 is a perspective view of the closure applying dies; Fig. 19 is a top plan view, partly in section, of the said dies; Fig. 2O is a similar View of the said dies, in other positions; Fig. 2l is a side elevation ,of the mechanism for transporting stringsand handles to the bags; Fig. 22 is a similar elevation, the elements being shown in other positions; Fig. 23 is a perspective view of an ejeeting mechanism co-operating with the 'closure ap-' plying device; 'and Fig. 24 is an elevation of the finished product 'made on the-machine.

Before describing the machine, the product made thereon will be disclosed. This product is illustrated in Fig. 24 of the drawings, and comprises a bag 25 of open-mesh textile fabric, such as cotton, and of a size tocontain just suiiicient tea-leaves or coffee for a single brewing. The mouth of the bag is closed by drawing or gathering the same into folds, and applying thereto a metallic band 26, that is shapedv to assume the form of a ring, embracing the folded portion of thebag below its mouth, so as to prevent escaping of the contents. The ends of the metal strip are pointed or triangular, as shown at 27, and so arranged in relation to each other that the small gap between tlie same is disposedat an obli ue angle to a. plane at which one of the at faces of the encircling ring is located. For the purpose of facilitating the handling of the cartridge, there is secured thereto a flexible means, for instance a string 28, to which is attached at its free end a handle 29, made for instance of cardboard. This string serves also as the means for suspending the cartridge from the receptacle, such as a tea.- pot or coffee-pot, in which the extraction is to take place. The string is secured to the cartridge by placing it against the folds around the bag mouth before the band 26 is formed to constitute a ring-shaped closing means for the bag. While the ends of the ring do not meet, as shown in Fig. 24, the string 28 is under all circumstances securely held in place, the triangular ends of the band overlapping, as shown.

The bag closing machine comprises a frame, including a horizontal table portion 30, mounted upon legs or standards. 31. Above this table portion and suitably spaced therefrom is held a horizontally extending plate member 32. A horizontally extending 'driving shaft 33 is journaled in a gear housing 34, which is disposed on the table portion 30. This shaft carries a worm 33', in mesh with a worm gear 35 on a vertical shaft 35, the latter being journaled in bearings 36 on the table 30 and frame member 32, and constitutes the main driving shaft of the machine. Rotation may be imparted to the shaft 33 in any suitable manner from any desired source of power, for instance, by the intermediary of a belt 37, running over a fixed pulley 38 on the shaft 33. On the last-mentioned shaft is also mounted a loose pulley`39, with a co-operating belt shifter 40 of any suitable construction, and including a bar 41, which extends to the front of the machine, so as to be within the reach of the operator.

In bearings 42 on the horizontal frame members 30 and 32 is rotatably mounted a vertical shaft 43, and to this shaft is fixed below the table 30 a Wheel 44, having four equidistantly spaced notches 45 in its periphery. With these notches co-operates a spring-pressed pawl 46 on an arm 47, which is oscillatably mounted on the shaft 43 and connected by a rod 48 with a pin 49, carried eccentrically by a disk 50, the latter being fixed to the shaft 35 below the table member 30. By means of this mechanism intermittent movement is imparted from the shaft 35 to the shaft 43, the latter being causedto move step by step in the direction of the arrow shown in Fig. 6 of the drawings adjacent the same. lVith the wheel 44 co-operates 'a mechanism which holds the shaft 43 stationary during its periods of rest. This mechanism comprises a lever 51, fulcrumed at 52 to the table portion 30 and carrying upon one of its ends a pin 53, adapted to enter the notches 45 in the said v arranged wheel, and upon its other end an anti-friction roller 54, which co-operates with the disk 50, the latter being made in the form of a cam, as clearly shown in Fig. 6 of the drawings. This cam is so timed in relation to the pin 49 that the pin 53 is unseated from a notch in the wheel 44 immediately before the pawl 46 starts its feeding stroke. A spring 55, attached to the lever 51| and to a stationary part of the machine, causes the pin 53 to enter a notch immediately before the pawl 46 starts its return movement. In case the spring 55 is broken, obviously the pin 53 would not enter a notch in the wheel 44 and the shaft 43 and others connected thereto, which will hereinafter be described, would be permitted to overrun and cause breakage of the closure applying dies, in addition to throwing the co-operatingelements of the machine out of gear. In order to prevent such occurrence, the lever 51 is provided with an extension 51', with which co-acts a. cam shaped disk 56, that iS keyed to the shaft 35 and provided with a shoulder 57. If the spring 55 breaks and the lever 51 is not shifted to bring its pin 53 into one of the notches of the wheel 44, the extension 51 is, in the rotation of the shaft 35, brought to `bear against the shoulder 57, thereby pre- Aventing the shaft 35 from further movement,

the belt simply slipping on the fixed pulley 38. After the broken spring has been replaced and the machine is againin order to run, the extension 51 is swung out of the path of the shoulder 57, the-machine running then in the regular lnanner.

In parallel relation to the shaft 43 there are mounted on the machine frame shafts 58 and 59. To these shafts intermittent rotation is imparted by the shaft 43. For this purpose the shaft 43 carries a gear 60, in mesh with a gear 61 on the shaft 59, these gears being of equal size whereby the shafts 43 and 59 moveat the same speed in the opposite directions. The shaft 59 drives the shaft 58 by means of a chain 62, which runs over sprocket wheels 63 and 64 on the shafts 59 and 58, respectively. A tensioning device 65 of any suitable construction co-operates with the chain 62, for the well known purpose. The shafts 59 and 5 8 are thus rotated in the same direction, the ratio between the sprocket wheels 63 and 64 heilig, however. such that the shaft 58 rotates at a speed lower than that of the shaft 59.

To the shaft 58 is keyed` or otherwise at-` tached, aA horizontally extending table 66,

below the level of the frame portion 32 and having radially arranged equidistantly disposed troughs 67 on its upper surface. Above -each trough is located a fork-shaped arm 68, attached to a disk 69, which is fixed to the shaft 58. The outer ends of the prongs of the forks diverge, as

clearly shown 1n llu permit of -a convenient insertion between the same of a filled bag with its mouth flat, the length of the parallel portions of a fork corresponding substantially to the width of the unpuckered mouth of a bag. The bags are inserted between the prongs of the forkshaped arms with their open mouths extending a substantial distance above the said arms, they resting in the troughs 67 and being brought, one after another, in the intermittent movement of vthe shaft 58 against a stationary ledge 70, that is disposed above the arms 68 parallel to the longitudinal axis of the machine, the shafts 58, 43 and 59 being disposed in said axis, as clearly appears from Figs. 1 and 6 of the drawings. lVith the ledge 70 cooperates a jaw 71, fixed to two arms 72, which, in turn,

vare attached to a short horizontally extending shaft 73, the latter being oscillatably mounted in bearings 74. The shaft extends parallel to the ledge 70 and has fixed to it an arm 75, connected by a link 76 with a lever 77. This lever is fixed to a spindle 78, which extends through the frame member 32 and has lixcd to it below the said frame member a lever 79, carrying an anti-friction roller 80, co-operating with a cam 81, mounted on the shaft 35. The cam 81, by the connections described, causes the jaw 71 to swing toward the ledge 70 when a bag is brought to rest against the said ledge, the jaw, together with the ledge, forming a guide, in the form of a passage 83, (Fig. 14), in which the bag is moved by means hereinafter to be described, toward the shaft 43, for a purpose which will hereinafter appear.

Before the jaw 71 is swung against ,the ledge 70, a string 28 and handle 29 thereon are brought against the open mouth of the bag. The strings with the handles thereon are engaged, by an operator, with spring clips 84 on a chain carrier 85, that runs over sprocket wheels 86 and 87` the carrier extending. preferably, at right angles to the longitudinal axis of the machine, the sprocket wheels being mounted in bearings 88, carried by an extension 89 of the machine frame. wheel 87 is mounted a ratchet wheel 90, with which co-operates a spring-pressed pawl 91, that is connected by a link 92 with the arm 47, the arrangement being such that, when the shaft 43 's given a movement, the chain is moved to bring one of the strings 28 and handle 29 within the reach of a pair of jaws, denoted by the numerals 93 and 94, which take hold of the stringand transfer it to a bag, which Arests against the ledge 70.

The jaws 93 and 94 are pivoted at 95 and 96,' respectively, to a base member 97, that is oscillatably` mounted on a spindle 97', the latter being mounted on lugs 99 on the bearings 7 4. Through the jaw 93 extends loosely a spindle 98, carried by one of the lugs 99.

V107 around its fulcrum On the shaft of the sprocket The spindle 98 extends horizontally in parallel relation to the shaft 73, the pivot pins and 96 extending at right angles to the said spindle. The base member 97 is connected by a link 100 with the arm 75, thereby causing the said jaws to move toward the sprocket wheel 80 when the jaw 71 is caused to more away from the stationary ledge 70 (Fig. 21), the jaws 93 and 94 being brought to bear against a bag, resting against the said ledge, before The jaw 93 is provided adjacent its pivot 95 with a projection 101, seated between two projections 102 on the jaw I94. On the spindle 98 is slidably mounted a collar 103, bearing against the jaw 93, and against this collar abats one end of a spring 104, that is coiled around the said spindle, its other end bearing against a sleeve 105 on t-he said spindle. To this sleeve is pivoied at 10G a lever 1.07, that is fulcrumed at 108 toa stationary part of the machine frame, its free end carrying a pin 109, in the path of a slide 1 10. A spring 111 has one of its ends connected to the jaw 93 and its other end to the element to which the lever 107 is fulcrumed. The spring 111 is stronger than the spring 104, it thereby having a tendency to hold the jaws 93 and 94, by the intermediary of the projections 101 and 102, in their open positions, as shown in Fig. 5 of the drawings. Then the slide 110, in its movement toward the shaft 58, swings the lever 108, the sleeve 105 is shifted in the direction of the arrow shown in Fig. 5 of the drawings, the movement being transmitted by the spring 104 and collar 103 to the clamp 93, which swings around its pivot 95 toward closing position, moving the jaw 94 also to closing position by the intermediary of the coacting projections 101 and 102. The slide 110 moves toward the shaft 58, as will hereinafter appear, when the jaws 93 and 94 are in their outer positions shown in Fig. 21 of the drawings, in which they are brought opposite a string 28 and handle 29 on the chain carrier 85, thereby gripping a string and handle, which are then transferred against the open mouth of a bag, resting against the ledge 70. lVhen then the jaw 71 has been brought to bear against the said bag, the slide 110 moves toward the shaft 43, thereby releasing the lever 107 and permitting the spring 111 to open the jaws 93 and 94, thus releasing the string and handle.

The slide 110 moves on the ledge 70, overlapping the passage 83 between the said ledge and thejaw 71, when the latter is in its closing position shown in Fig. 13 of the drawings. is to pucker the bag and transfer the same to a carrier 112, that is fixed to the shaft 43. This carrier comprises a disk'lll havthe jaw 71 reaches the said The main purpose of the slide I

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