US1372372A - seymour - Google Patents

Description

D. S. SEYMOUR.

FILLED BAG SEW|NG.APPARATUS.

APPLKCATION FILED FEB.12,1916.

1,372,372, Patented Mar. 22, 1921.

ISHEETS SHEEY I.

0. s. SEYMOUR.

FILLED BAG SEWING APPARATUS.

1,372,372. APPLICATION FILED FEB. 12, 1916. Patenmd Mar. 22, 1921. ZSHEETSSHEEI 2.

uoenl oz Patented Mar. 22, 1921.

I SHEETS-SHEH 3.

an we u [07/ D. S. SEYMOUR.

FILLED BAG SEWING APPARATUS.

APPLICATION mso FEB. 12. 1916.

191' (new if a? D. S. SEYMOUR.

FILLED BAG SEWING APPARATUS.

APPLICATION FILED FEB.12,1916.

1,372,372. Patented Mar. 22, 1921.

7SHEETS-SHEE14.

Elwuwtoz D. S, SEYMOUR.

FILLED BAG SEWINGAPPARATUS.

APPLICATION FILED FEB.12, I9I6. 1,372,372. Patented Mar. 22, 1921.

YSHEETS SHEEI 5.

D. S. SEYMOUR.

FILLED BAG SEWING APPARATUS.

APPLICATION FILED FEB. l2, I916.

1,372,372, Patented Mar. 22, 1921.

TSHEETS-SHEEI 6.

D. S. SEYMOUR.

FILLED BAG SEWING APPARATUS.

7 SHEETSSHEE1 I.

UNITED STA'ILES PATENT OFFICE.

DUDLEY S. SEYMOUR, OF OAK PARK, ILLINOIS, ASSIGNOR TO UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FILLED-BAG-SEWING APPARATUS.

Specification of Letters Patent.

Patented Mar. 22, 1921.

Application filed February 12, 1916. Serial No. 77,980.

To all'whomit may concern:

Be it known that I, DUDLEY S. SEYMOUR, a citizen of the United States, residing at Oak Park, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Filled-Bag-Sewing Apparatus, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful improvements in filled bag sewing apparatus, and more particularly to a sewing apparatus wherein a sewing head is supported by a frame so as to overhang the support for the filled bag. I

An object of the invention is to prov de an apparatus of the above character with means whereby the sewing head may be adjusted u and down relative to the support for the lled bag, and also in and out relative to the supporting frame for said sewing head, the driving connections for the sewing mechanism being so constructed as to permit said adjustments without disturbing said driving connections.

A further object of the invention is to provide an apparatus of the above character wherein the sewing head is simultaneously moved outward awagl from the supporting frame as it is raise and is simultaneously moved inwardly toward the supporting frame when the same is lowered.

A still further object of the invention is to provide means for holding the driving mechanism of the sewing head from rotation when said sewing head is raised.

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

In the drawings, which show by way of illustration one embodiment of the invention:

Figure 1 is a front view of a filled bag sewing apparatus having my improvements applied thereto;

Fig. 2 is a side view, showing the supporting bracket for the sewing head. a portion of the sewing head, the means for driving the sewing mechanism, and the germs for counterbalancing said sewing ead;

Fig. 2 is a similar view, but showing the sewing head in the lower position;

Fig. 3 is a plan view of the same;

Fig. 4 is a front view of the same, but showing the sewing head omitted and the supporting bracket therefor in section on the line 44 of Fig. 3;

F1 5 is a sectional view on the line 5-5 of Big. 4, but showing the supporting bracket for the sewing head; Fig. 6 is a detail in side elevation showmg the movable roller for maintaining the driving belt under proper tension for various adjusted positions of the sewing head;

F g. 7 is a view, showing a portion of the sewing head in side elevation and the brakmg mechanism for holding the driving shaft from turning when said head is adjusted;

Fig. 8 is a top plan view of the same; and

Fig. 9 is a view similar to Fig. 2. but showing a modified form of supporting and adjusting means for the sewing head.

Prior to my invention, filled bag sewing apparatus have been constructed wherein the filled bags rest on a movable support underneath the sewing head which oven hangs the support. Means have been provided also for relatively adjusting the sewing head and the support for the filled bags so that the apparatus would be used to operate upon bags of different sizes.

The present invention has for its purpose to provide a sewing head and a supporting means therefor which permits the sewing head to be simultaneously moved outwardly away from the frame as it is raised so that, when a larger bag is placed on the support, the movement of the sewing head away from the support to accommodate this larger bag causes the sewing head to move outward into alinement with the middle plane of the larger bag. In other words. when the bags increase in height, they also increase in diameter, and to bring about a proper positioning of the sewing head for larger bags necessitates not only a raising of the machine, but a'movement of the sewing head outward away from the frame. In smaller bags the reverse adjustments take place. In order that the above adjustment of the sewing head may be brought about quickly, it is necessary that the driving connection for the sewing head shall be so constructed as to maintain its connection undisturbed when the sewing head is adjusted.

This is accomplished in the present invention by properly locating the idle pullcys over which the belt operates and by providing a tension pulley for taking up the slack in the belt when the sewing head is moved downward and for giving up slack to the belt when the sewing head is moved upward. The shifting of the sewing head up and down when the driving mechanism maintains its connection with the operating belt causes the operating belt to rotate the driving shaft. If the driving shaft is rotated in a backward direction, this would cause a bunching of the stitching threads and prevent the machine from properly stitching when started.

A further purpose of the present invention is, to provide a brake mechanism which is connected to the shifting handle for shifting the sewing head so that the operator first applies the brake to the main shaft to prevent its turning before the sewing head is raised.

Referring more in detail to the drawings, I have shown the invention applied to a filled bag sewing apparatus consisting of a main supporting frame 1 on which are mounted suitable brackets carrying rollers 2 and 3, and over these rollers passes an endless conveyer belt 4. Beneath the upper strand of the conveyer belt 4 is a supporting table 5 having a series of rollers 6, and this conveyer belt is driven from a vertical shaft 7. The supporting brackets carrying the rollers 2 and 3 and the conveyer belt and also 7 the table 5 are raised and lowered by vertical shafts 8 and 9 which are geared to a cross shaft 10 operated by a suitable handle 11.

The above described elements form no specific part of the present invention, but have been described as identifying the type of apparatus to which my invention is ap lied. p Mounted on the upper supporting plate 12 of the main frame 1 is a standard 13 which consists of two side plates 14 and 15 which are suitably connected by cross webs, and this standard is clamped to the supporting plate 12 by suitable clamping bolts.

Mounted on the plate 14 are two pairs of spaced guiding rolls 16 and 17. Passing between these guiding rolls is a bar 18. The supporting bolts for the guiding rolls are provided with laterally extending heads 19 which overlap the guiding bar 18 and guide the same in its vertical movement. By having two pairs of guiding rolls, the bar 18 is held vertical and may be moved up and down between said guiding rolls.

On the other side of the standard are two more pairs of guiding rolls 20 and 21. The supporting bolts for the guiding rolls 20 and .21 arealso formed with laterally extending heads 19. A vertical bar 22 is located between the pairs of rolls 20 and 21 and is guided in the manner described in connection with the bar 18.

The bars 18 and 22 are rigidly connected by a bracket 23. The bracket 23 projects outwardly at 24 beyond the standard 13. Mounted on this bracket is a supporting plate 25 having a vertically extending head 26. Said supporting plate 25 is formed with longitudinal slots 27 and 28. A bolt 29 passes through the slot 27 and holds the plate so that it may slide on the supporting bracket. A bolt 30 passes through the slot 28, and this bolt at its lower end is provided with a'clamping collar 31. Said clamping collar has an outwardly projecting pin 32. This facilitates the ready turning of the clampin collar so as to release the clamping bolt 30.

Said supporting plate 25 is also provided on its upper face with a rack 33. This rack meshes with a pinion 34which is fixed to a 7 short shaft mounted in bearings 35 carried by thesupporting bracket 23. On one end of said shaft there is a belt wheel36. A belt 37 makes a turn around this belt wheel, and the lower end thereof is secured at 38 to the upper supporting plate of the main frame. The upper end of this belt is connected at 39 to the upper part of the standard. has fixed connections, therefore, with the frame and the standard, and the bodily up and down movement of the bracket '23 will cause the belt wheel 36 to rotate. This in turn will rotate the pinion 34, and the pin ion 34 meshing with the rack 33 will force the supporting plate 25 in or out, depending upon the direction of movement of the bracket 23. When the bracket'23 is raised, the supporting plate 25 will be moved out- This belt wardly and, when the bracket 23 is lowered,

then the supporting plate will be moved inwardly.

At the upper end of the standard 13, there is a bracket 40. This bracket is provided with a pulley 41 and a pulley 42. A chain or other flexible device 43 passes over the pulleys 41 and 42. One end of this chain is connected at 44 to the bracket 23. The other end of this chain is connected at 45 to a weight 46 which. is constructed so as to slide up and down on a standard 47 fastened to the upper supporting plate 12 of the main frame. The purpose of this weight 46 is to counterbalance the weight of the bracket 2 and the parts supported thereby.

Mounted on the vertical head 26 of the sup porting plate 25 is a sewing head 48. This sewing head 48 consists of a standard 49 having a base 50 which is bolted to the vernism of the sewi head. The work is held against the wor support by a presser foot 54.

The operating parts of the sewing head are driven from t e main shaft which carries a belt wheel 55. The belt wheel 55 is driven by a belt 56. The belt 56 passes over a belt pulley 57 mounted on the supporting bracket 23, and thence over a belt pulley 58 mounted in the standard, and thence over a driving belt ulley 59 mounted on a vertical shaft adap to be driven by a main pulley 60, see Fig. 1. The belt after passing over the pulley 59 is led over a pulley 61 mounted on the standard 13, and thence over a pulley 62 mounted on a movable bracket 63, and finally underneath a pulley 64, and thence to the driving pulley 55 of the sewing head. The pulley 64 is mounted on the bar 22 and moves up and down with the supporting bracket 23. The pulley 62 and its supporting bracket 63 are more fully shown in Fig. 6 of the drawings. Said bracket slides in suitable guide-ways formed in the guiding plates 66, and a spring 67 is attached at its lower end to an eye 68 carried by the bracket 63. The upper end of the spring is attached to an eye 69 carried by one of the guide plates 66. These springs normally press the bracket 63 upward and put the belt 56 under tension.

As above noted, the pulleys 57 and 64 move up and down with the supporting bracket 23, and likewise move up and down with the sewing head which is carried by the supporting bracket. If the sewing head is lowered and moved inward from the position shown in Fig. 2 of the drawings, to the position shown in Fig. 2, a certain amount of slack will be given to the belt 56. This slack will be at once taken up by the movement of the bracket 63 through the action of the spring 67. On the other hand, when the sewing head is raised and moved outward from the frame, the belt will be placed under tension and will push downward on the pulley 62 and the spring 67 will yield to give up slack to the belt to permit this movement of the sewing head.

Mounted on the standard 49 of the sewing head is a bracket 70. The lever 71 is pivoted to the lower end of this bracket, and said lever carries a handle 72 by which the sewing head may be raised and lowered. This lever 71 is pivoted to a link 73 and the link in turn is pivoted to a rock lever 7 4. Said rock lever is pivoted at 75 to the standard and carries a brake shoe 76 which is adapted to engage the driving pulley 55 of the sewing machine. A spring 77 normally holds the brake shoe out of contact with the driving pulley.

If the operator lifts the handle 72, the lever'71 will swing about a pivotal support until the brake shoe engages the driving pulley. This will lock the driving shaft against movement. The sewing head will then be raised, the counterbalancing weight assisting in this movement of the sewing head. As the bracket 23 moves upward under the lifting force of the operator, the belt wheel carried by the bracket will be driven throu h the action of the fixed belt 37, and this will move the sewing head outward on its supporting bracket 23. The collar 31 will, of course, be released before this adjustment can be made. A pressure on the handle in a downward direction forces the brake lever against its usual stop, and then the sewing head downward, and the reverse action takes place, that is, the pinion 34 will be moved in a direction to move the sewing head inwardly toward the standard.

From the above description, it will be apparent that I have rovided a means whereby the sewing head may be simultaneously raised and moved outwardly away from its supporting standard for properly positioning the same for operation upon a sack of larger dimensions. Inasmuch as the driving shaft is locked against turning, the upward movement of the sewing head will not turn the shaft backward and thus bunch the threads about the looper. A downward movement of the sewing head, if it imparts any movement to the sewing mechanism, will turn the main shaft in the right direction for sewing, and there will be no bunching of the threads. And furthermore, this upward and downward movement of the sewing head may be quickly brought about by the operator and without disturbing the driving connections for the sewing mechanism.

In Fig. 9 of the drawings, I have shown a slightly modified form of the invention. In this form of the invention, the upper supporting plate 12 of the main frame is provided with a standard 78. This standard is provided with spaced pairs of rolls 79 and 80. The standard at its upper end projects forward so that the front edge of the standard is inclined to the vertical. The upper pair of rolls 80 are, therefore, arranged at a oint in advance of the lower pair of rolls 9. Guided by the rolls 79 and 80 are guide bars 81, and these guide bars support a bracket 82 having a supportin plate 83 fixed thereto. The supporting plate 83 carries the sewing head 49. The supportin plate or bracket 82 and the parts carriefi thereby are counterbalanced by a weight 84 through a flexible connection 85 running over pulleys 86 and 87. The belt 88 for driving the main shaft of the sewing machine runs Over pulleys 57, 58, 59, 61 62 and 64 which are similar to those above described. A sliding bracket 63 is moved upwardly by a spring 67, and the pulley 62 mounted on the sliding bracket is, therefore, held pres ed against the belt by the spring. The only difference between this construction and that previously described consists in the fact that the supporting rods are inclined, thus doing away with the rack bar and pinion which causes the outward movement of the sewing head. As the sewing head is raised, it will move outward owing to the inclination of the supporting plate 83; likewise when it is moved downward, it is moved inwardly for a similar reason. The driving mechanism and the sewing mechanism remain undisturbed in the same manner as above described.

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

Having thus described the invention, what is claimed as new is 1. A filled bag sewing apparatus including in combination a supporting frame, a

filled bag support, a sewing head overhanging said filled bag support and having a needle reciprocating in a horizontal plane, means for simultaneously raising and moving said supporting head outwardly from the supporting frame and for simultaneously lowering andmoving said supporting head inwardly toward the supporting frame, and driving connections carried by the frame for operating the sewing head, said driving connections being so constructed as to be automatically maintained as the head is moved upwardly and downwardly.

2. A filled bag sewing apparatus including in combination, a supporting frame, a filled bag support carried by said frame, a sewing head overhanging said frame and having a needle reciprocating in a horizontal plane, means for simultaneously raising said head and for moving thev same outwardly away from said frame, a counterbalance for saidsewing head, a driving belt for operating said sewing head, and means for auto-- matically maintaining said driving belt under proper tension regardless of the position of the sewing head.

3. A filled bag sewing apparatus including in combination, a supporting frame, a filled bag support carried by said supporting frame, a sewing head overhanging said supporting frame,means whereby the supporting head may be adjusted upwardly and downwardly and away from the supporting frame, a brake shoe for engaging the driving pulley of the sewing head, and devices for first applying said brake shoe andsubsequently lifting the sewing head.

4. A filled bag sewing apparatus including'in combination a supporting frame, a filled bag support carried by said supporting frame, a bracket, a sewing head connected to said bracket and having a needle reciprocating in a horizontal plane, means for supporting said bracket on said support ing frame whereby the same may be moved up and down, a counterbalance for t the bracket and the parts supported thereby, a driving belt for the sewing head, and means for automatically maintaining said driving belt under proper tension regardless of the position of the supporting bracket and the supporting head. i

5. A filled bag sewing apparatus including in combination. a supporting frame, a filled bag support carried by said supporting frame, a sewing head overhanging said sup.- porting frame, a bracket on which said sewing head is mounted, means for supporting and guiding said bracket whereby the same may be moved vertically relative to said supporting frame, a driving pulley on said supporting frame, a belt for connecting said driving pulley on the supporting frame with the driving pulley for the sewing head, idle pulleys movable up and down with said bracket over which said driving belt is guided, and an idle pulley movable independent of said bracket for maintaining said belt under proper tension for all positions of the sewing head.

6. A filled bag sewing apparatus including in combination, a supporting frame, a

filled bag support carried by said supporting head, a movable slide carrying said idle pulley for placing the belt under tension, and a spring for forcing said slide outwardly.

7. A filled bag sewing apparatus includ ing in combination a supporting frame, a standard extending upwardly from said supporting frame, a bracket mounted on said standard for vertical adjustment, a supporting plate attached to said bracket, a sewing head connected to said supporting plate, and devices for moving said supporting plate outwardly relative tothe bracket when said bracket is raised and for moving said supporting plate inwardly relative to the bracket when said bracket is lowered.

8. A filled bag sewing apparatus including in combination a supporting frame, a standard extending upwardly from said. supporting frame, a pair of guiding bars, guiding rolls carried by said standard for guiding said bars, a bracket connecting said guiding bars, a supporting plate carried by said bracket, a sewing head connected to said supporting plate, means for counterbalancing said bracket and the parts carried thereby, and devices for moving said supporting plate with the sewing head outwardly when the bracket is raised and for moving said supporting plate and the sewing head inwardly when the bracket is lowered.

9. A filled bag sewing apparatus including in combination a supporting frame, a standard extending upwardly from said supporting frame, a pair of guiding bars, gu ding rolls carried by said standard for guiding said bars, a bracket connecting sald guiding bars, a supporting plate carried by said bracket, a sewing head connected to said supporting plate, means for counterbalancing said bracket and the parts carried thereby, devices for moving said supporting plate with the sewing head outwardly when the bracket is raised and for moving said supporting plate and the sewing head inwardly when the bracket is lowered, a driving belt for the sewing head, and means for maintaining said driving belt under tension for all positions of the sewing head.

10. A filled bag sewing apparatus including in combination, a supporting frame, a standard extending upwardly from said supporting frame, a bracket mounted on said standard for vertical adjustment, a supporting plate attached to said bracket, a sewing head connected to said supporting plate, said supporting plate having a rack formed thereon, a pinion carried by the bracket and meshing with said rack, a belt wheel connected with said pinion, a belt having a complete turn about said belt wheel and its ends fixed whereby a movement of the bracket in an upward direction will rotate said belt wheel and through said rack and pinion move said supporting plate outwardly, and a movement of said bracket in a downward direction through said devices will move said bracket inwardly.

11. A filled bag sewing apparatus including in combination, a supporting frame, a standard extending upwardly from said su porting frame, a bracket mounted on said standard for vertical adjustment, 9. supporting plate attached to said bracket, a sewing head connected to said supporting plate, said supporting plate having a rack formed thereon, a pinion carried by the bracket and meshing with said rack, a belt wheel connected with said pinion, a belt having a complete turn about said belt wheel and its ends fixed whereby a movement of the bracket in an upward direction will rotate said belt wheel and through said rack and pinion move said supporting plate outward, and a movement of said bracket in a downward direction through said devices will move said bracket inwardly, a driving belt for drivin said sewing head, and means for maintaining said driving belt under tension for all positions of the sewing head.

12. A filled bag sewing apparatus including in combination, a supporting frame, a standard extending upwardly from said supporting frame, a bracket mounted on said standard for vertical adjustment, a supporting plate attached to said bracket, a sewing head connected to said supporting plate, said supporting plate having a rack formed thereon, a pinion carried by the bracket and meshing with said rack, a belt wheel connected with said pinion, a belt having a complete turn about said belt wheel and its ends fixed whereby a movement of the bracket in an upward direction will rotate said belt wheel and through said rack and pinion move said supporting plate outward, and a movement of said bracket in a downward direction through said devices will move said bracket inwardly, a driving belt for driving said sewing head, means for maintaining said driving belt under tension for all positions of the sewing head, a brake shoe for engaging the driving shaft for the sewing head, a handle for raising and lowering the sewing head, and devices for connecting said handle with the brake shoe whereby an upward movement of the handle first applies the brake and then raises the sewing head.

In testimony whereof I afiix my signature in the presence of two witnesses.

DUDLEY S. SEYMOUR.

Witnesses: S. GEORGE TATE,

A, F. BREDSHALL.

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