US1472998A - Filled-bag-sewing machine - Google Patents

Description

Nov. 6 1923.

S. G. TATE FILLED BAG SEWING MACHINE Filed Oct. 2, 1918 5 Sheets-Sheet 1 a nucui'oz 1 (to-z mugs Nov. 6 1923.

S. G. TATE FILLED BAG SEWING-MACHINE Filed Oct. 2, 1918 '5 Sheets-Sheet 2 Nov. 6 1923.

S. G. TATE FILLED BAG SEWING MACHINE 5 Sheets-Sheet '5 Filed Oct.

awuamtm amvmdoz Nov. 6, 1923.

S. G. TATE FILLED BAG SEWING MACHINE I Filed Oct. 2, 1918 5 Sheets-Sheet' Nov. 6 1923.

S. G; TATE FILLED BAG SEWING MACHYTJE- 5 Sheets-Sheet 5 Filed Oct. 2, 1918 Patented Nov. 6, 1923.

SAMUEL GEORGE TATE, AOF CHICAGO,.ILLI1\IOI, ASSIGNOR TO.U1\TION SPECIAL MA- CHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

EILLED-BAGwSEWIlYG MACHINE. 7

Application fi1ed.Oct ober 2, 1918. Serial No. 256,619.

To all whom it may concern:

Be it known that I. SAMUEL G. TATE, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Filled-Bag-Sewi'ng Machines, of which the'following ,is a description, reference being had to the accompanying drawing and tothe figures of reference marked thereon.

The invention relatesto new and useful improvements in filled bag sewing'machines.

In the patent granted to John Bigelow, December 31st, 1907, No. 875,314, thereis shown and described a filled bag sewing machine having a bag support open atone side and a sewing head overhanging jthe balg support; This bag support is in thefform of an endless conveyor. The conveyor is driven from a fixed driving shaft by a connection which is adjustable so as to permit the table to be shifted vertically for different sized bags and still maintain the driving connection between the said shaft and the conveyor.

An object of the present invention is ,to provide a machine of the above general character with driving means for the con veyor, which driving means includes a drive ing member fixed against endwise or lateral movement so that the support for the bag may be adjusted vertically fordifferentjsize bags without requiring adjustment orrepositioning of the driving connections.

In the drawings which show one form of my invention:

Figure 1 is a front view of a sewing machine for sewing filled bags, having im-H provements embodied therein;

Figure 2 is a view partly in section and partly in plan, showing parts ofthe machine;

Figure 3 is an end view of apart of the machine;

Figure 4 is a sectional view 4-4: of Figure 2;

Figure 5 is a detail, showing the manner of supporting the lower end of the main driving shaft;

Figure 6 is a sectional view on 6-6 of Figure 3;

Figure 7 is a perspective viewof the-support and brackets which carry the endless conveyor.

The invention is directed broadly to the p 0.11 the line the line operating means for the conveyor of a filled bag closing machine. Specifically, the machine includes a frame at one side of which is a support and overhanging the support is asewing head having stitching mechanism for stitching the mouth of the bag. Movableon the support is a conveyor which carrice the bag to the stitching mechanism. This conveyor runs over rollers forming partofthe support, an operating pulley beneath the support, and over an idler roller, also beneath the support. Yielding means is provided1,formoving the idler roller to keep the .jqnveyor indriving engagement with th pera pu y- The support is capable of being adjusted vertically 'to accommodate different sized bags and when said support is adjusted, the idlelfllollor takes upa new position, giving or'taki-ng up the conveyor, so as to maintainthe same in proper driv ng contact h the operating pulley which is maintained in the same driving position for all adjustments of the table.

'Referringmore in detail to the drawings. myi nprovedfilled bag machine includes a main supporting frame 1, having a platform 2" atlthe upper end thereof, on which is 1,I1.O1111 eda;bracket 3 carrying a sewing head 4, sewing head 4 has an overhanging arm 5, in" which a needle bar reciprocates, and a work supporting cylinder 6. The slewinghead is of the usual construction and detail eddescription thereof is not thought neces ary Th's'seWi-nghead is driven froma vertical 'counter; shaft 'T, which carriesa belt wheel belt 9 running over the belt wheel 8, also runs over the belt wheel 10 of the sewinghead. The shaft 7 is driven from a hdriz ontal main shaft 11, by means of a belt 12, seeV FigureB The shaft 11 is con-- nected by a friction clutch 13, withthe shaft of a motor indicated at'M in the drawings.

The shaft 7 is mounted in suitable bearings, the lower one of whichis indicated at 14, in the drawings. The shaft 7. extends thl'Ql gh this bearing 14 and; is held from endwisemovement therein by collars 15 and lo' which are secured to the shaft-7, see Fig? ure 5.j Atthe'lower end of the shaft 7 there is afbeltiwheel 17, with which the belt 12 co operates. S aid belt wheel is. provided with' afflangejls to retain the beltthereon. Mounted on the frame 1 is a cross'piece 40 which carries projecting brackets 19 and 20. These brackets may be bolted or other wise secured to the cross piece. At one end of the cross piece there is a roller 24 and at the other end there is a roller 25. Located between the rollers 24 and and mounted on the projecting brackets are side sections 21 and 22, which support a series of rollers 23. Running over the rollers 24 and 25 and the small rollers 23 is a conveyor 26. This conveyor 26 also runs over a driving pulley 27 attached to the shaft 28. v This shaft 28 is mounted in suitable bearings having a fixed position relative to the frame 1 and carries a spiral gear 29, meshing with a worm gear 30 on the shaft 11. The pulley 27 is attached to the shaft, as above noted, and as the shaft is also mounted in fixed bearings, said pulley has neither an endwise nor a lateral movement. The conveyor 26 also runs over an idler roller 31. The bearings of this idler roller 31 are indicated at 32 in the drawings. Each bearing is mounted to slide in a slot 33, formed in a supporting arm 34. These supporting arms 34 are freely mounted on the shaft 28 and swing about the same as an axis. Connected with each bearing 32 is a rock arm 36, pivoted at 37 to its respective arm 34. Mounted on each rock arm is a weight 38, which may be adjusted on the rock arm. The rock arm is provided with a slot 39 for the bearing 32 of the idler roller 31. It will be readily seen, therefore, that the bearings of this roller 31 may freely slide in the slots 33 and the weights 38 normally operate to force the bearings to the right, as viewed in Figure 1. The conveyor runs over this pulley in such a direction that the weights place the conveyor under tension and hold the conveyor in driving engagement with the pulley 27.

The cross piece 40 carrying the rollers 24 and 25 and also the brackets 19 and '20, is mounted so as to slide vertically on the frame 1. Attached to the cross piece, adjacent each end thereof, is a chain 44 which runs over a sprocket wheel 45. The sprocket wheels 45 for the two'chains are mounted on a shaft 46 operated by a hand crank 47. A weight 48 is connected to each chain. These weights are for counter-balancing the conveyor support, whichfconsists' .of the brackets 19 and 20, the rollers 24 and 25 and the intermediate table formed by the side sections 21 and 22 and the small rollers carried thereby. The cross piece 40 is slidably secured to the side members of the frame 1 by flange plates 41. Extending through the flange on each plate is aset screw 42, having a pivoted handle 43. These set screws maybe used for locking the conveyor. support in an adjusted position. It will readily be seen that afterthe set screws 42'have' been released, the conveyor support may be raised or lowered by turning the shaft47 and as the rollers 24 and 25 move up and down with the support, the section of the conveyor on which the filled bags are supported may be moved toward and from the sewing head. lVhen the conveyor suppor' is raised from the full line position in Fig ure 1, to the dotted line position shown therein, the idler roller 31 will. move upwardly to the dotted line position shown in this figure. When the table is lowered, then, of course, the idler roller will move downwardly again. The length of the idler roller is shorter than the distance between the side sections 21 and 22, and, therefore, when the table is lowered said side sections again move to a point below the upper face of the idler roller and this permits the conveyor support to move downwardly to a very low limit and gives a wide range of adjustment for the machine.

As a means for controlling the sewing head and the operation of the conveyor, 1 have provided a clutch lever 49, see Figure 2, which controls the clutch 13. This lever 49 is pivoted at 50 to the base of the machine and is moved by a link 51 connected toan arm 52 on a rock lever 53. At the extreme outer end of the rock lever 53 there is an upwardly extending arm 54, which may be engaged by the knee of the operator for shifting the rock lever. In this way the operator standing in front of the machine may readily control the clutch 13 and as the conveyor and sewing head are both operated from the shaft 11, they will be simul taneously started or stopped.

It will be apparent, therefore, that I have provided a driving connection for the conveyor which permits the table to be adjusted vertically and at the same time the driving connection with the conveyor is neither moved endwise nor laterally, but remains in a'fixed position. In theBigelow patent, above referred to, the driving connection for the conveyor must be an adjustable one, and with my improved driving connection, I have done away with this adjustable con nection, which is liable to create wear and more or less looseness in the parts.

In the present embodiment of the invention, this conveyor is driven from the same shaft which drives the sewing head. It will be understood. of course, that this is not essential. as other means may be used for driving the conveyor. The essential feature is that the conveyor shall be driven in proper timing with the feed of the sewing head, so as to convey the bottom of the bag at substantially the same speed that the top of the bag is fed by the sewing head.

It is obvious that minor changes in the details 'of construction and arrangement of parts may be made, without departingfrom the spiritof my invention.

Having thus described my invention,

what I' claim as new and desire to secure by Letters Patent, is: 1. A filled bag sewing machine including in combination, a frame, a vertically adjustable open-sided conveyor support carried by said frame, means for adjusting said conveyor support vertically, a sewing head carried by said frame and overhanging said -conveyor support, means for operating said sewing head, a conveyor running over said conveyor support for conveying a bag past the sewing head, means for actuating said conveyor including an operating shaft, bearings for said shaft having a fixed position on said frame, and means carried by said shaft and directly engaging said conveyor for driving the same in any adjusted position of said con veyor support.

2. A filled bag sewing machine including in combination, a frame, a vertically adjustable open-sided conveyor support carried by said frame, means for adjusting said conveyor support vertically, a sewing head carried by said frame and overhanging said conveyor support, means for operating said sewing head, a conveyor running over said conveyor support for conveying a bag past the sewing head, means for actuating said conveyor including an operating shaft. bearings for said shaft having a fixed position on said frame, a. pulley mounted on said shaft, and means for holding the conveyor in driving engagement with said pulley in any adjusted position of said conveyor support.

3. A filled bag sewing machine including in combination, a frame, a vertically adjustable open-sided conveyor support carried by said frame and including end rollers and an intermediate table, means for adjusting said conveyor vertically, a. sewing head carried by said frame and overhanging said conveyor support, means for operating said sewing head, a conveyor movable over said end rollers and table for conveying the bag past the sewing head, means for actuating said conveyor including an operating shaft, bearings for said operating shaft having a fixed position on said frame, a pulley attached to said shaft, and means for holding said conveyor in driving engagement with said pulley in any adjusted position of said conveyor support.

4. A filled bag sewing machine including in combination, a frame, a vertically ad justable open-sided conveyor support having rollers at opposite ends thereof, means for adjusting said support, a sewing head overhanging said support, means for operating the sewing head, a driving shaftlocated below said conveyor support and mounted in bearings having a fixed position relative to said frame, a driving pulley attached to said shaft, a conveyor extending around said rollers and the driving pulley, and means for holding said conveyorin driving engagement with said pulley ,inany adjusted position of said conveyor support. 5. filled bag sewing machine including in co nbination, a frame, a vertically adjustable open-sided conveyor ,supporthaving rollers {at opposite ends I thereof I and; a supporting 'table intermediate the rollers, means for adjusting said support, a sewing head overhanging said support, means for operating the sewing. head, a driving shaft located below said conveyor support and mounted in bearings having a fixed position on the frame, a driving pulley attached to said shaft, a conveyor extending around said rollers and the driving pulley, and means for holding said conveyor in driving engagement with said pulley in any adjusted position of said conveyor support.

' 6. A filled bag sewing machine including in combination, a frame, a vertically adjustable open-sided conveyor support having rollers at opposite ends thereof and a supporting table intermediate the rollers, Jeans for adjusting said support, a sewing head overhanging said support, means for operating the sewing head, a driving shaft located below said conveyor support and mounted in bearings having a fixed position on the frame, a driving pulley attached to said shaft, a conveyor extending around said rollers and the driving pulley, an idler roller below the support, and means for automatically causing said idler roller to maintain the conveyor in driving engagement with said pulley in any adjusted position of said conveyor support. 4

7. A filled bag sewing machine including in combination, a frame, a vertically adjustable open-sided conveyor support carried by said frame, means for adjusting said convevor support vertically, a sewing head carried by said frame, and overhanging said conveyor support, means for operating said sewing head, a conveyor run ning over said conveyor support for conveying a bag past the sewing head, means for actuating said conveyor including an operating shaft, bearings for said shaft having a fixed position on said frame, means carried by said shaft and engaging said conveyor for driving the same in any adjusted position of said conveyor support, and manuallv operable means for controlling said sewing head, operating means and said conveyor operating means.

8. A filled bag sewing machine including in combination, a frame, a vertically adjustable open-sided conveyor support carried by said frame, means for adjusting said conveyor support vertically, a sewing head carried by said frame and overhanging said conveyor support, a conveyor movable over saidconveyor support for conveying a bag for operating said sewing head vfrom said past the sewing head, means for actuating counter shaft, a clutch interposed between said conveyor including an operating shaft, said main and counter shafts, and manually bearings for said shaft having a fixed posioperable means for controlling said clutch 5 tion on the frame, and means carried by whereby said sewing head and conveyor will 15 said shaft and engaging said conveyor for be simultaneously started or stopped. driving the same in any adjusted position In testimony whereof, I affix my signaof said conveyor support, amain driving ture.

shaft, a counter shaft operatively connected i 10 with said conveyor operating shaft, means SAMUEL GEORGE TATE.

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