US1475759A - Bag closer - Google Patents

Description

Nov. 27, 1923.

l. T. ENGLISH BAG CLOSER Filed Jan. l2 1921 3 Sheets-Sheet l Nov. 27 1923.

l. T. ENGLISH BAG CLOSER Filed Jan. 12. 1921 s ysheets-stmt 2 ft; v

Amm/vnf BAG CLSER 3 Sheets-Sheet 3 Filed Jan. 12. 1921 AWORNEV in ldlc-iv. E??

tllllfED STATES ift-.34759759 IRA T. ENGLISH, OF PQRTLAND, OREG-ON.

BAG CLQSER.

Application filed January 12, 1921. Serial No. 436,730.

To all whom t may concern:

Be it hereby known that l, IRA T. ENG- Lrs, a citizen of the United States, and resident of Portland, in the county of Multnomah and State of regon, have invented a new and useful Closer, of Which the following is a specification.

This invention relates more particularly to devices for closing cloth bags after they i0 have been filled.

The obj ect of my invention is to minimize the amount of labor entailed in the packing, Weighing and closinn' of bags.

l attain these results in the manner described in the following' specification and illustrated in the accompanying drawings, in which:

VFigure 1 is a side elevation of the device and Figure 2 a front elevation. Fi 1re 3 is an enlarged plan 0f the device. Figure l an enlarged sectional elevation along the line l-l in Figure 3.

Similar numbers of reference refer to the same or similar parts throughout the several views.

Referring in detail to the drawings, it will be understood that this device is to be used in connection with any suitable packing or filling machine which introduces nearly the required amount of material into the sack 5. This sack is now placed upon a scale 6 Where it is accurately weighed and additional material added from the boX 7 if required.

At the present time a sewing machine head is commonly employed in the art. This head has a horizontal needle heid at a height which will correspond 'with the height of the sack 5. At the present time this head is 2.9 held stationary and the sack 5 is usually fed toward same on a traveling belt or conveyor. @ne operator of the sewing machine thereby closes sacks for a number of different packers, in which method many diflioulties are encountered. l-n order to avoid these difficulties l have constructed my machine as follows:

@n the horizontal base 9 l have erected a pair of vertical standards 10 Which act as guides for a scale platform 11 which is made vertically adjustable by means of the holes 12 in the standards 10 and the slide 13 of the scale platform 11. Bridging across the horizontal )ort-ions lll of the standards 10 is the channel iron 15 joined to said horizontal members by means of the short angle irons 16. Upon the bottom of the vchannel 15 is secured a strip of Wood or metal 16A upon which is secured a raclr 17 by means of the bolts 1S Which pass through the bottom of 00 the channel 15. A horizontal carriage mem- 'ber 19 carrying the rollers 20=Which engage the sides of the channel 15 is supplied with an apron 21 to which is secured the sewing head 8. lt Will be seen that the sewing head G5 is now movable in a direction at right angles to the needle and in a horizontal plane.

0n the rearward end of the carriage member 19 I have mounted a motor 22 equipped With a pulley 23. @n the forward end of 70 the member 19 l have erected the standards 24 and 25 which support the horizontal shaft upon which is mounted a step pulley, 27 over Which is passed a round belt 28 Which passes around the idler Wheels V29 on the 75 standards 30 which are secured to the member 19 and then around the pulley 31 of the sewing head 8. Near the opposite end of the shaft 26 .l have placed a clutch pulley 32 which is slidably mounted on the shaft and 30 driven by the belt 33 from the pulley 23 of the motor 22. A bracket 34 supports the shouldered end 35 of the shaft 26 and is supported by the member 25.

A clutch cone 36 is slidably mounted on S5 the shaft 26 and secured against rotation by the spline 37. The clutch cone 36 is adapted to engage the interior face of the pulley 32 and is held out of engagement With same by means ofthe spring 38.V per groove ee 39 formed in the hub 410 of the member 36 engages the pins ll1 in the lever t2 which is mounted on the shaft 13 in the brackets it which are secured to the side of the meniber 25. i forked lever Ll5 is also attached 95 to the shaft 113 and engages the pins i6 projecting from the collar e7.

rllhe collar e7 is secured to a vertically movable shaft 48 also carrying the forked arm fl-9 vr lose pins 50 engage the slot 51 in 100 the clutch collar 52. When raised this clutch collar engagessimilar teeth on the under side of a hub of a Worm Wheel 53. rlhis Worm wheel and clutch collar are mounted on a. vertical shaft 54 whose upper end jour- 105 nals in the bearing 55 projecting from the member 25. The lower end of the shaft 54 is supported by the member 19 beneath which it carries a pinion 56 which meshes with the rack 17. The clutch collar 52 is 110 slidably mounted on the shaft 54 and splined thereon.

The shaft 48 guides at its upper end in the member 25 and near its middle in the meinber 19. A T-shaped member 57 is secured to the lower end of the shaft 48 and is adapted to slide loosely upon the horizontal rod 58 supported at its outer ends in the T-shaped members "59 which are carried on the upper ends of the rods 60. These rods are joined at their lower end 61 to a foot treadle (32 having its ulcrum G3 near its center.

The operation ol' my device is as follows: After the sack 5 has been brought to almost the correct weight by the packer it is placed upon the scale 6 where it is brought up to requirements in weight, as before explained. The operator, or packer as he is kncwn in the art, new places an empty sack under his packing machine and turns his attention to the sack which is ready for sewing. YHNith his hands he brings the mouth of the sack 5 between the presser 'foot cit the `leed plates oit' the sewing head in tne usual manner and then by depressing' the treadle with his loot he raises the shalt i8 and thereby throws the cone 3G into engagement with its pulley 32 which now rotates the shalt 26, which in turn drives the needle. At the same time the clutch collar 52 is brought into engagement with the worm wheel 53, and the pinion 56 is thereby caused to rotate and propel the carriage 19 along on its track 1T at the correct sewing speed.

When it is desired to temporarily sew sacks which are to be again opened before being shipped it is only necessary to reverse the step pulley 27 and use a shorter belt which will produce a longer stitch than secured by the use of the large pulley.

Only one clutch mechanism would be required were it not for the fact that the needle should be working etere 'the feeding action is begun, the object being to sew a short chain oi stitches at beth ends ot the seam, which acts as a lock lor the closirg seam and prevents unraveliugu lt is preferable to sew about cue inch et this chain oiE A stittdics betere and utter the needle enters a chain of stitches of suiiicient length has been produced.

This construction precludes the possibility or the operator leaving too short a chain at the beginning of a seam with the result that if the sack is handled roughly the seam will unravel and cause a loss of the contents of the bag.

It will be observed that there are numerous ways in which these results could be attained, but l have illustrated this particular form as best illustrating the invention set forth in the claims following in which l claim:

l. In a carriage for traveling sewing heads, the combination of a track, a carriage mounted on said track, meter niiounted on said carriage, a. main shalt driven by said motor and mounted transversely on said carriage, a clutch interposed between said main shaft and motor, a reduction gear driven from said main shaft and mounted on a vertical shat, a pinion secured to the lower end or said vertical shaft, a rack secured to said track and meshing with said pinion, a clutch interposed between said driving shalt and said pinion, and a lioot treadle means arranged to actuate both clutches almost simultaneously, said main shaft clutch coming into engagement slightly betere the feed operating clutch.

2. in a machine for sewing sacks, the combination of a sewing head having a horizontal needle with a supporting lrame secured to said head and provided with grooved wheels, a channel iron whose side members form tracks for said wheel, side supports for said channel iron, a horizontal main shalt carried by said trame transversely to said track, a motor on said frame adapted to rotate said main shalt, a friction clutch between said motor and shaft, a pulley secured on said main shalt and arranged to drive said sewing head, a vertical sliai't bearing in said frame, a worm on said main shatt dri ving a worm v. Lieel on said vertical shalt, a claw clutch on said vertical shaft adapted to lock said worm wheel te said vertil-,al shaft, a pinion on said vertical slialt ou the under side ot said frame, a rack en said channel iron between the tracks adapted to mesh with said pinion, and a treadle mechanism adapted to actuate said friction and claw clutches.

RA T. ENGLISH.

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