US1726868A - Filled-bag-sewing machine - Google Patents

Description

Sept. 3, 1929. s, G TA1-E 1,726,868

FILLED. BAG SEWING MACHINE Filled Sept. 20, 1921 6 .meets-Sheet 1 Sept. 3, 1929` s KG. TATE 1,726,868

FILLED BAG SEWING MACHINE Filed Sept. 20. 1921 6 Sheets-Sheet 2 Sept. 3, 1929. s. G. TATE FILLED EAG sEwING MACHINE Filed Sept. 20,- 1921 6 Sheets-Sheet 1. J :LEER

Sept. 3, 1929. s. G. TATE FILLED BAG SEWING MACHINE Filed Sept. 20, 1921 GSheets-Sheet 4 Sept. 3, 1929? s,4 G, TATE I '1,726,868 l FILLED BAG SEWING MACHINE v Filed sept. 2o, 1921 asngqt-sheet 5 Sept. 3, 1929. s. G. TATE 1,726,868

` FILLD BAG SEWING MACHINE Filed sept. 2o, 1921 e sheets-sheet eY Patented sept. 3.1929.

UNITED STA-Tias4 PATENT OFFICE.

ASAMUEL GEORGE TATE, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO UNION SPECIAL' MACHINE COMI'ANY, OF CHICAGO, ,.ILLINOIS, A CORPORATION OF ILLINOIS.

F1LLE15BAG-SEWING MACHINE- Application hledseptember 20, 1921. Serial No. 501,941.

The invention relates to new and useful im-YY provements in sewing machines, andmore particularly to a sewing machine which is dapted for closing the mouths of filled ags. o

An object ofthe invention is to provide a sewing machine of the above character wherein both the conveyor for the bag and the sewing mechanism for closing the bag maybe simultaneously adjusted toward or from each other for adjusting the machine for successive operations upon filled bags of different heights.

A further object of the invention is to provide a filled bag sewing machine having a horizontally disposed conveyor section for presenting thebags to the stitching mechavnism with an exten-sion on which the filled bags may be placed and conveyed to the horizontal section and wherein a single conveyor belt for the bags runs over both the horizontal section of the conveyor and the extension.

A still further object of the invention is to provide a machine of the above type wherein the extension has a hinged connection with the horizontal section so that said horizontal section may be readily adjusted to various heights and the inclined section will automatically be shifted so as to deliver the 'filled bags on to the horizontal section, the loading end of the'eXtension remaining in the same horizontal plane.

A still further object ofthe invention is to providea filled bag sewing machine wherein the conveyor is positively geared to and driven by the driving pulley so that the size of the supporting driving pulleys may be relatively small, thus permitting the conveyor to be shifted to a point near the floor when operating upon bags of maximum heights.

A still further object of the invention is to provide a filled bag sewing machine having a horizontal conveyor section and an eXtension which may be set in inclined position or in horizontal position, and when in horizontal position for operating on bags of the same height, said extension is supported by adinstable legs so that the extension may be supported in a horizontal line with the main conveyor section.

These and other objects will in part be obvious and will in partbe hereinafter more fully disclosed.

In the drawings which show by way of ilustration one embodment of the inven- Figure 1 is a front view of a filled bag sewing machine embodyin my improvements with certain of the partsroken away to show the mechanism in rear thereof, only the portion of the inclined conveyor being shown;

Fig. 1a is a front View of the remainder of the inclined conveyor;

Fig. 2 is an end view of the machine with certain parts in section;

Fig. 3 is a top plan view of the machine;v

Fig. 4 is a view partly in plan and partly -in section showing the parts beneath the table and with a portion of the conveyor broken away to show the parts beneath the same;

Fig. 5 is a front View showing a portion of the main section of the conveyor and the extension, said extension being raised to horizontal position;

Fig. 6 is an enlarged vertical sectionalview showing the driving connection betweenthe main adjusting shaft and the vertical shafts which shift respectively the sewing head and the conveyor;

Fig. 7 is a horizontal sectional yview showing the driving connection between the main vertical operating shaft and the shaft which drives the conveyor, and

Fig. 8 is a' detail of the transverse section showing one of the supporting brackets and one of the supporting rollers for the conveyorbelt, and the guide rails which carry the same. Y

The invention is directed particularly to a filled bag sewing machine of the open side type, and wherein both the head and the conveyor are mounted .for adjustment such as shown for example in the re-issue patent granted Dudley S. Seymour, March 5, 1918, Number 14,443. The machine of the present invention has a main supporting framework on which is mounted a sewing machine head. Said sewing machine head is carried by a vertical standard.l and is so attached thereto that it may be adjusted vertically. Said head overhangs the framework and the needle is arranged so as to reciprocate in a horizontal line or substantially so. Mounted on the frame is a plate which is adapted to be adjusted vertically, and this plate is provided with brackets which carry a supporting table over which the conveyor belt runs. Said supporting table is preferably made up of a series of rollers so as to facilitate the movements of the conveyor belt when loaded with a heavy filled bag. The sewing head overhangs this conveyor and is adapted to form a line of stitching for closing the mouth of the bag lresting on the conveyor and moved thereby. Thevconveyor consists preferably of sprocket chains running over sprocket wheels and having a plurality of lugs which are riveted or otherwise secured to a conveyor belt. At each end of the supporting table are supporting rollers for the conveyor belt. Extending from the frame and in line with the conveyor is an extension which is hinged to the main section of the conveyor supporting fra-me, and the conveyor belt runs over the extension. This extension may be placed at an incline or may be set in horizontal alinement with the main section, and adjustable legs are provided for supportin said eXtension when placed horizontally. eans is provided for simultaneously raising the conveyor and lowering the sewing head, or s1- multaneously lowering the conveyor and ralsing the sewing head so that the machine may be quickly set for bags of different heights.

'Referring more in detail `to the` drawings, my improved machine consists of a supporting framework 1 which is closed at the top by a table 2. Mounted on the table 2 is a standard 3 which consists of side plates and a connecting member or members 4. A bracket 5 is provided with a dove-tailed recess adapted to receive a dove-tailed projection 6 carried by the members 4, and the bracket is capable of vertical adjustment on these members 4. Mounted on the bracket 5 is a second bracket 7 which is secured thereto by bolts 8, 8 passing through slots 9 into the bracket 5. Said second bracket 7 extends to the front of the table and the sewing machine 10 is bolted to this bracket. The sewing machine is connected to the bracket in such a way that the needle bar 11 reciprocates in a substantially horizontal plane. The needle bar is operated by means of a needle lever 12 and the bag material passes between the bed plate or cylinder arm 13 and the presser foot 14 in the usual manner. The sewing machine is driven by a belt pulley 15. This belt pulley is connected by means of a belt 16 to a belt pulley 17 which is splin'ed about a shaft 18 so that the belt pulley 17 may slide vertically on the shaft 18, but rotates therewith. The shaft 18 is connected to a friction clutch 19 in the main driving pulley 2O which in turn is operated by a belt 21 driven by a motor 22. The motor 22 is carried by suitable brackets which are adjustably connected by means of bolts 23 passingthrough slots 24 in the table 2.v

Mounted on the front portion of the framework 1 is an adjustable support 25. Said support is adapted to slide vertically on the frame and is supported and adjusted to dif ferent vertical positions by two parallel shafts 26, 26, said shafts being mounted in fixed bearings in the framel and having threaded engagements with the support 25.,

The support may be secured in adjusted positions by means of hand set screws 27, 27, one at each side of the machine. Projecting laterally from the support 25 are two angle brackets 28, 28 on which are mounted spaced supporting rails 29, 29 Iand these supporting rails 29, 29 carr a series of spaced rollers 30. Running overt e rollers. 30 is a conveyor belt 31. Mounted in the adjustable support 25 is a shaft 32. Said shaft 32 carries two spaced sprockets 33, 33 and a 'pulley or drum 34. Also mounted on the shaft 32 is a sprocket 35. Projecting from the other end of the support 25 is an arbor 36 which carries a pair of sprocket wheels 37, 37 and a drum 38. The L conveyor belt 31 consists of two sprocket'A chains 39, 39 running over the sprocket wheels'f 33 and 37 at opposite sides of the conveyor, l' l respectively, and a iiexible belt 4() which is secured to the sprocket chains by riveting or bolting the same to ears 41, 41 projecting from the sprocket chain. It will thus be seen that the conveyor belt is geared to the sprocket wheels through the sprocket chains and will be positively driven thereby.- The sprocket wheel 35 is driven by a sprocket chain 42 which runs over a sprocket wheel 43 secured to a shaft 44 (see Fig. 7) which is mounted on a bearing sleeve 45. The shaft 44 at its inner end carries fa gear wheel 46 which meshes with a worm gear 47 on a vertical shaft 48. This vertical shaft 48 is adapted to be connected with the main driving pulley 20 by means of a friction clutch 49. The friction clutches for operating the shafts 18 and 48 are controlled by a lever 50 and is preferably of the t pe shown and described in the patent grante to Dudley S; Seymour, August 7 1917, -No. 1,235,846. This lever 50 is connected bv a rod 51 to a lever 52 which in turn is controlled by a knee shift 53.

As clearly set forth in the patent to Sey mour referred to, when the knee shift is operated to a certain extent, the conveyor belt will be driven and when it is shifted to a further extent, then the sewing machine will be start-l ed and operated in conjunction with the conveyor belt. It is understood, of course, that the sewing machine is provided with the usual four-motion feeding mechanism, and that the feed of the mouth of the bag is substantially in unison with the travel of the bag as it is moved by the conveyor belt.

Extending 'laterally from the horizontal section of the conveyor is an extension 54. Said extension 54 consists of two side members 55, 55 which are supported by the arbor I36 so as to turn about the center thereof as a pivot. The outer ends of the side members 55, are connected by a shaft 56. Mounted on the shaft 56 are two sprocket wheels one of which is indicated at 57 over which the sprocket chains of the conveyor run. Also journaled in the side members are spaced rollers 58 similar in construction to the rollers 30. The conveyor belt rests on these rollers. It will be noted that the conveyor belt extends over both the main horizontal section and the extension, and, of course, at the connection between lthe horizontal section and the extension, said conveyor rests on the drum 38. At the outer end of the members 55 and journaled on the shaft 56 are two rollers one of which is indicated at 59, said rollers serve as a means for supporting the' outer end of the extension when in inclined position. As above noted, thesupport 25 is capable of being adjusted vertically by means of the twol vertical shafts 26. These shafts 26 are geared toa y'horizontal shaft 60 vwhich is capable of being turned by means of a crank 61. When the crank 61 is turned in one direction, the support 25 is raised, and when turned in the opposite direction, the support 25 is lowered. The threaded shafts 26 which raise and lower the support 425 will sustain it in various adjusted positions. As it is raised, the left-hand end of the extension as viewed in Fig. 1, will be raised, and the rollers 59 will run along the floor and allow the inclined section of the conveyor to automatically assume"y a position for delivering-the filled bags placed on theconveyor on to the horizontalsection of the conveyor. y j 1 The sewing machine head is raised and -lowered by means of' a'fverticalshaftf62.

Said vertical shaft 62 ismounted in suitable bearings, one of which is shown'- at 63 in Fig. 6 of the drawings. Said 'shaft is connected by 'a universal joint 64 with an inclined shaft section 65, which carries a bevel gear 66 meshin with a bevel gear 67 on the shaft 60. T e shaft 62 extends through the threaded sleeve 68 shown in dotted lines in Fig. 3 of the drawings. This sleeve 68 is carried by a projecting bracket arm 69 formed as a part of the bracket 5. As the shaft 62 is rotated, the bracket 5 will be raised or lowered, depending upon the direction of rotation of the shaft 62 and this in turn will raise or lowei` the sewing machine head. This shaft 62 is soegeared to the shaft 60, and the shafts 26 are so geared to the shaft 60, that when the shaft 60 is rotated in one direction, the support 25 for the conveyor willv be raised and the sewing machine head will be lowered, andwhen the shaft 60 is rotated in the other direction, the support 25 for the lconveyor will be lowered and the sewing machine heady will be raised.

In Figure 1 of the drawings, I have diagrammatically shown the setting of the conveyor and the sewing machine head for four different sizes of sacks for Hour, twelve pounds, twenty-four pounds, forty-eight pounds and ninety-eight pounds. It is twenty-'seven inches from the bottom ofa ninety-eight pound sack to the line of stitching for closing the mouth of the sack, while it is twenty-three inches from the bottom of a forty-eight pound sack to the proper place for the line of stitches for closing the mouth thereof. It is nineteen and three-quarter inches for a twenty-four pound sack and' fifteen and one-half inches for a twelve pound sack. The conveyor is shown as set for a ninety-eight pound sack, and it is twenty-seven inches from the line a whichy is the line oftravel from the bottom of the sack to the line awhere the line of stitching should be placed. When a forty-eight pound sack is to be stitched, the crank 61 is turned so as to raise the conveyor to the line b. Thisparts are only shifted through al distance of two inches this may be very quickly accomplished. Furthermore, for a forty-eight pound sack, the .conveyor belt is only raised a distance of two inches. Prior to my invention, when the conveyor is shifted for different sized sacks, it is raised approximately -theentire distance, that is, the four inches whenl going from a ninety-eight to a fortyeight pound sack, and this brings the conveyor a considerable distance from the floor, requiring the lifting of the sacks, through a greater distance if `they are placed directly on the horizontal section of the conveyor. It will also b e obvious that in setting the machine, for twenty-four ound sacks, and for twelve .pound sacks, tiie conveyor is vonly lifted half the distance, while the sewing machine is lowered the other half of the distance required. It will also be noted that in shifting from a twenty-four pound sack'to a ninet -eight pound sack, the needle is shifted ess than three inches above and below the central position and therefore the operatin o sition of the needle is always easily accessi e to the operator. The inclined conveyor is very convenient in feeding the sacks to the horizontal section of the conveyor.

The sacks arey placed on this inclined extension, and are carried thereby up on to the horizontal section of the conveyor. If the inclined `section is used for bringing the sacks up to the horizontal conveyor, there is a limit to the angle of inclination without putting too great a load on the machine, and at which the bags will ride properly. This might be overcome by making a very long extension. By my improved arrangement, however, where the range is adjusted a comporatively short distance, while even going from one extreme size of sack to another, the extension can be made relatively short. Then again, by positively driving the belt to the sprocket chain connection in the driving pulley, the driving pulley may be comparatively small in diameter andl thus moved to a comparatively lowposition on the frame.

Connected to the side members 55 are arms which carry a roller 71 and springs 72 connected to the arm 70 raise the roller into yielding contact with the lower strand of the conveyor, and this roller serves as a support therefor. It may sometimes be desirable t0 4place the members 55 in horizontal alinement with the main section of the conveyor, and I have therefore provided foldable supporting legs 7 3 and 7 3 for the inclined section of the conveyor. Said legs are pivoted at their upper ends at to the side members 55 and are held in vertical position by means of folding braces 74. Each leg is made in tvo sections 73 and 73 which are secured t gether by suitable clamping bolts, thus th legs may be extended to accommodate any adjusted position of the horizontal section of the conveyor.

It will be noted that there is a single conveyor running over both the inclined section and the horizontal section, and therefore, the filled bags will be conveyed from one section on to the other without any danger of being tipped over. It will also be noted that the main section of the conveyor which supports the bag while it is being stitched is horizontal, and therefore the bottom of the bag travels in a horizontal plane with the bag vertical, while the bag is being stitched, and this enables a horizontal line of stitching parallel with the bottom of the bag to be made. It will also be noted that when the horizontal section is adjusted for a different height of bag, the inclined section is automatically positioned to deliver the bags on to the horizontal section in its new position. Inasmuch as the conveyor may be shifted quickly from one set position to another, bags may be taken in succession which are different heights, one operator adjusting the conveyor while the other guides and directs the bags to be stitched. While I have shown hand means for adjusting the conveyor and sewing head to different positions, it will be understood that power means may be used for bringing about this adjustment, if desired.

It will be noted that the conveyor can be adjusted vertically without disturbing the driving connections therefor. The worm wheel 47 is splined on the shaft 48 and is free to slide vertically thereon, said Worm wheel being held continuously in mesh with the gear wheel 46 by the-surrounding casing forming a part of the bearing for the shaft 44. It will also be noted that the sewing machine head may be adjusted vertically without disturbing the driving connections therefor. The belt wheel driving the sewing machine as above noted is splined on the shaft 18 and said belt wheel 17 is supported by a bearing carried by an arm 5 which is attached to t-he bracket 5 so that the belt. wheel 17 moves up and down with the bracket.

It is obvious that minor changes in the details of construction and the arrangement of the parts may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described the invention, what I claim as new and desire to .secure by Letters Patent, is

1. A filled bag closing machine comprising a conveyor, a support therefor, a sewing head overhanging said conveyor', a support for the sewing head, and means for simultaneously adjusting said sewing head and conveyor toward and from each other.

Q. A filled bag closing machine comprising a supportingl frame, a conveyor carried thereby, a sewing head carried by said frame, and overhanging said conveyor, driving mechanism for actuating said sewing head and for operating said conveyor, and means for simultaneously adjusting the sewing head and conveyor toward and from each other without disturbing the driving connections for the sewing head and conveyor.

3. A filled bag sewing machine comprising a supporting frame', a conveyor carried by said frame, a sewing head carried by said frame and overhanging said conveyor, a motor carried by said frame, means for actuating the sewing'head from said motor. means for actuating the conveyor from said motor, and means for simultaneously adjusting said sewing head and conveyor toward and from each other without disturbing the driving connections for the sewing head and conveyor.

4. A filled bag closing machine comprising a supporting frame, a conveyor carried thereby, a sewing .head overhanging said conveyor and including a horizontally disposed needle and a feeding mechanism for feeding the mouth of the bag to the needle, means for actuating said sewing head, means for actuating said conveyor whereby said conveyor feeds the filled bags substantially in unison with the feed of the mouth of the bag by the feed of the sewing machine, and means for simultaneously adjusting the sewing head and conveyor toward and from each other without disturbing the feed of the mouth of the bag or the travel of the conveyor.

5. A filled bag closing machine comprising a supporting frame, a conveyor carried thereby, a sewing head carried by the frame and overhanging said conveyor, said conveyor having a horizontal section for feeding the llb filled bag while it is being stitched, and means for simultaneously moving said conveyor section and said sewing .head bodily toward and from each other.

6. A filled bag closing machine comprising a supporting frame, parallel vertical threaded shafts mounted in said frame, a support carried by said threaded shafts, a conveyor carried by said support, an upright carried by said supporting frame, a threaded shaft extending up into said upright, a bracket mounted on said shaft and slidable upon said upright, a sewing head carried by said bracket and overhanging the conveyor, and means for simultaneously turning the vertical shafts for moving the conveyor and sewing head toward and from each other.

7. A filled bag closing machine comprising a supporting frame, parallel vertical thread'- ed shafts mounted in said frame, a support carried by said threaded shafts, a conveyor carried by said support, an upright carried by said supporting frame, a threaded shaft extending up into said upright, a' bracket mounted on said shaft and slidable upon said upright, a sewing head carried by said bracket and overhanging the conveyor, a horizontal shaft, gearing connecting the horizontal shaft to the upright vertical shafts carrying the conveyor, means for connecting said horizontal shaft to the vertical shaft carrying the bracket for the sewing head, and means for turning said horizontal shaft for simultaneously adjusting the sewing head and conveyor toward and from each other.

8. A filled bag closing machine comprising a supporting frame, a support mounted on said frame, a driving pulley carried by said support, a conveyor belt running over said driving pulley, said conveyor belt consisting of spaced sprocket chains geared to the pulley and 'a flexible belt rigidly fixed to said sprocket chains and movable therewith, and means for supporting said conveyor throughout the entire width thereof whereby filled bags may be supported thereon and fed to the sewing head, and a sewing head carried by said frame and overhanging said conveyor.

9. A lled bag closing machine comprising a supporting frame, a sewing head carried by said frame and overhanging the same, a conveyor for conveying filled bags to said sewing head, said conveyor including a horizontal section and an inclined section hinged to said horizontal section, means for raising said horizontal section and simultaneously raising the inclined section at its connection therewith, and means for simultaneously adjusting the sewing head and conveyor toward and from each other.

10. A filled bag closing machine comprising a supporting frame, a sewing head carried by said frame and overhanging the same, a conveyor for conveying filled bags to said 11. A filled bag closing machine compris-y ing a supporting frame, a sewing head carried by said frame and overhanging the same, a conveyor for conveying filled bags lto said sewing head, said conveyor including a horizontal section and an inclined section hin ed to said' horizontal section, means for raising sald horlzontal sectlon and vsimultaneously raising the inclined section at its connection therewith, means for supporting said inclined section when raised to horizontal position, and means for simultaneously ad`usting the sewing head and conveyor towar and from each other.

12. A filled bag closing machine comprising a supporting frame, a sewing head c arried by said frame and overhanging the same, a conveyor for conveying filled bags to said sewing head, said conveyor including a horizontal section and an inclined section hinged to said horizontal section, means for raising said horizontal section and simultaneously raising the inclined section at its connection therewith, means for supporting said inclined section when raised to horizontal position, said means being adjustable to accord with various heights of the horizontal section.

13. A filled bag closing machine comprising a supporting frame, a sewing head carried by said frame and overhanging the same, a conveyor belt for conveying filled bags to the sewing head, said conveyor belt including two sprocket chains, and a flexible belt secured to 'said chains, and sprocket wheels at the opposite sides of said belt over which said chains run whereby said belt is positively moved for conveying the filled bags to the sewing head and means for supporting said conveyor throughout the entire width and length thereof.

14. A filled bag closing machine comprising a supporting frame, a sewing head carried by said frame and overhanging the same, a conveyor belt for conveying filled bags to the sewing head, said conveyor belt. including two sprocket chains, a flexible belt secured to said chains, sprocket wheels at the opposite sides of said belt over which said chains run wherebv said belt is positively moved for conveying the filled bags to the sewing head, and means for supporting said flexible belt intermediate its sides and ends whereby the same is caused to travel in a horizontal line.

15. A filled bag closing machine compris-V ing a supporting frame, a sewing head carried by said frame and overhanging the same, a conveyor for conveying filled bags to said sewing head, said conveyor including a 4horizontal section and an extension hinged thereto, a conveyor belt running over said horizontal section and extension, and means for simultaneously adjusting the sewing head and conveyor toward and from each other. f

16. A filled bag closing machine comprising a supporting frame, a sewing head carried by` said frame and overhanging the same, a conveyor. for conveying filled bags to said sewing head, said conveyor including a horizontal section and an inclined section hinged to said horizontal section, means for raising said horizontal section and simultaneously raising the inclined section at its connection therewith, and auxiliary means independent of the raising and lowering means for supporting said inclined section in different set positions.

17. A filled bag closing machine comprising a supporting frame, a support carried by said frame, a driving pulley mounted on said support, means for operating said driving pulley, a conveyor belt running over said driving pulley, said driving pulley having sprocket Wheels at each end thereof, said conveyor belt havinglsprocket chains at each side thereof and located in the plane of the conveyor belt, said sprocket chains and conveyor running over said pullevr and sprocket Wheels associated therewith, and means for supporting said conveyor belt and sprocket chains intermediate the side edges of the conveyor belt and throughout the length thereof.

In testimony whereof, Iaiix my signature. 40

-SAMUEL GEORGE TATE.

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