US1259740A - Sewing-machine. - Google Patents

Description

G. HOEPNER.

SEWING MACHINE.

' APPLICATION FILED OCT-27. 191s.

1,259,74. Patented Mar. 19, 1918.

2 SHEETS SHEET l- Wizness v i e. HQEPNER.

SEWING MAC'HiNE.

Patented Mar. 19, 1918.

2 SHEETS-SHEET 2.

6 m 7 2 c 0 D E L H N W M c U D.- P A a 0 4 M 6 9 9 5 9w 9 1 Inventor:

Witness the upper my invention and GEORGE HOEPNEB, OF CHICAGO, ILLINOIS.

SEWING-MACHINE.

Specification of Letters Eatent.

Application filed October 27, 1916. Serial No. 128,104.

To all whom it may concern:

Be it known that I, GEORGE HOEPNER, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, have inventeda certain new and useful Improvement in Sewing-Machines, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to whichit pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Viewed in one of its aspects my invention may be said to have for its object to produce a simple, powerful and reliable machine for rapidly and effectively sewing up the mouths of filled fabric bags or sacks.

One of the diificulties experienced in sewing up the mouths of large filled sacks or bags arises from the considerable bulk and weight of each piece of work which causes its manipulation to be far from easy and simple. Viewed in one of its aspects my invention may be said to have for its object a simple means of supporting and controlling a bulky piece of work such as a heavy filled bag, whereby its manipulation is made easy and convenient and it may be shifted back and forth with the expenditure of practically no effort.

The various features my invention is characterized will hereinafter be pointed out with particularity in the claims; but, for a full understanding of of its objects and advantages, reference may be had to the following detailed description taken in connection with the accompanying drawings, wherein:

Figure 1 is a front elevation of a machine arranged in accordance with a preferred form of my invention;

Fig. 2 is a side elevation, the left from the right hand side of Fig. 1;

Fig. 3 is a section on an enlarged scale taken approximately on line 3-3 of Fig. .1; and

Fig. 4 is a view taken approximately on line 4:4: of Fig. 3. Referring to the drawing, 1 represents a suitable base from which rises a post or standard, 2. On the upper end of the post or standard is supported a sewing machine head, 3, so located that it will operate upon end of a bag positioned beside the post. The sewing machine head may conveniently be a umt carried by a bracket, 4,

of novelty whereby looking toward 1 which is attached to the postby a suitable clamp, 5. Beside the post is a vertical shaft, 6, which is revolubly supported, conveniently by means of a suitable bearmg at the upper end in the bracket 4 and a suitable bearing in a bracket, 7 attached to the post adjacent to the lower end ofthe shaft. On the shaft 6 is a suitable bracket device, 8, adjustable lengthwise of the shaft but held against rotation thereon. This may conveniently be accomplished by providing the shaft with a flattened portion as indicated at 9 and providing the bracket with a set screw, 10, engaging with the flattened portion and, thus performing the double function of holding the bracket, 8, in any desired position lengthwise of the shaft and against rotation on the shaft. The bracket 8 carries a suitable horizontal platform or table, 11, which is preferably segmental in form and has at the inner edge an upwardly projecting flange, 12. An upright member, 13, is carried by the bracket 8 just in rear of the table or platform, 11, and on the upper end of the member 13 is a curved shoe orguard, '14, of approximately the same contour as the flange 12 and lying almost immediately above the same. The member 14: may be adjusted on the upright, 13, by loosening a holding screw, 15. The upright 13 may be adjusted vertically relatively to the bracket 8 upon loosening a holding screw, 16; this adjustment being desirable to permit the lower end of the member 13 to remain at a predetermined relation to the base of the machine, regardless of the elevation of the supporting platform or table.

It will be seen that the work supporting table swings aboutQthe axis of the shaft 6, the angle of its swinging movement being indicated in Fig. 3 wherein the table is shown in full lines in its work-receiving position with the bracket, 8, engaging with the main supporting post, while the other limit of the movement of the table is illustrated in dotted lines which, shows the position of the table after the work has been carried past the sewing machine head.

I prefer so to construct the apparatus I that the table will always return to its workreceiving position when free to do soso that when empty it will always be ready to receive a bag and need not be adjusted for this purpose. This may conveniently be accomplished by providing a weight, 17-, attached to one end of a cable, 18, which passes Patented Mar. as, ieie.

over a pulley, 19, on the main supporting post and is attached to the end of a pro ecting arm or finger, 20, attached to the shaft 6. The parts are so proportioned that the weight 17 will always turn the shaft in the direction to bring the table into its workreceiving position, when free to do so. While it is desirable to have the table return automatically to a normal position, it is at the same time necessary to provide means for carrying the work forward during the sewing'operation, in order to relieve the sewing machine feeding devices from the strain which would be imposed on them if they were required to pull a heavy filled bag forwardly as the sewing progresses. To this end I have provided a power device in which is stored sutlicient power to swing the table against the resistance of the weight 17 when a forward movement of the .work is desired and which again becomes inoperative or ineffective when the work is done. This 1s conveniently accomplishedv by connecting a spring to the shaft 6 in such a way that when the machine is started the spring will be placed under tension, while upon.

stopping the machine the tension will be relieved. In the arrangement shown, I have,

attached-to the lower end of the shaft 6 a flexible member, 21, which partially surrounds the shaft; the free end of the member 21 being connected to one end of a spring, 22, which is in turn connected to one arm of a bell crank lever, 23. The other arm of the bell crank lever is provided with an anti-friction roller, 24, which is engaged by one end of a lever, 25, whose other end overlies an operating treadle, 26. When the operator presses his foot on the treadle the levers 25 and 23 are actuated in a direction to place the spring 22 under tension suflicient to overcome the. resistance to forward movement of the loaded table. It is desirable that the table be held in its workreceiving position in such a way that it will remain stationary while the work is being placed on it and to this end I have provided a catch which is released when the treadle is depressed. The catch may consist conveniently of a bar, 27, pivotally supported between its ends as at 28 on the base of the machine; the bar having on one end a hook, 29, adapted to engage with the lower end of the upright member 13, and having its other end overlying the treadle 26in such a position that whenthe treadle is depressed the hook 29 is carried down below the lower end of the upright 13 and releases the table.

The operation of the treadle to release the table and store up power in the actuating spring also starts the sewing machine through an arrangement which I shall now describe. 7 On the main supporting post,

rotatable block, 36, having a ll-shaped projection entering the depression in the block 35. It will be seen that by turning the block 36, its'wedge shaped end riding up one of the walls of the V-shaped depression in the stationary block, causes the block 36 to move lengthwise of theshaft and to force the pulley 32 toward the pulley 34. 'When the two pulleys are pressed together, the friction between them causes them to turn in unison with each other. The block 36 is provided with a radially extending arm, 40, which is connected by a rod, 41,-to the rear end of the treadle 26, the parts being so proportioned that when the treadle is depressed the block 36 is rotated and causes the two pulleys 32 and 34 to be clutched together. The sewing machine is driven by a belt, 42, passing from the pulley 34 to a pulley, 43, on the main shaft of the sewing machine.

The sewing machlne head is in the form of a simple, compact and powerfulmachine by which heavy bags may be easily and conveniently closed, which will permit a double bag consisting of an inner member and ah outer member to be passed through the machine twiceso' as to sew the two members separately, without disturbing the position of thebag on the table or support; the bag being simply swung back after the inner member has been sewed and being passed again through the machine to sew the outer member. In the same way, if the thread breaks when the seam is partly made, it is unnecessary to change the position of the bag on its support, the bag and its support being swung back to permit the sewing to start over again at the desired oint,

While I have illustrated anddescribed with particularity only a single preferred form of my invention, I do not desire to be limited to the exact structural details thus illustrated and described; but intend to cover all forms and arrangements which and a presser- 48, arranged parallel with.eachcome within the terms employed in the definitions of my invention constituting the appended claims.

I claim:

1. In combination, a sewing machine, a work support movable back and forth past the sewing machine, means tending constantly to bring said support to one limit of its movement, and means for simultaneously setting the sewing machine in operation and causing the support to travel toward the other limit of its movement.

2. In combination, a sewing machine, a work support movable back and forth past said sewing machine, means tendingconstantly to move said support in one direction, a device adapted to move said support in the other direction in opposition to the aforesaid means, and means for controlling the action of said device on said support.

3. In combination, a sewing machine, a work support movable back and forth past said sewing machine, means tending constantly to move said support in one direction, a device adapted to move said support in the other direction in opposition to the aforesaid means, and means for simultaneousl y setting the sewing machine and said device in operation and for simultaneously stopping the sewing'machine and rendering said device inoperative.

4:. In combination, a sewing machine, a work support movable back and forth past said sewing machine, means tending constantly to move said support in one direction, a power device connected to the support for moving it in the opposite direction, and means for simultaneously setting the sewing machine in operation and storing power in said power device. I

5. In combination, a sewing machine, a work support movable back and forth past said sewing machine, means tending constantly to move said support to one limit of its movement, a catch for holding said support at the latter limit, a power device connected to the support for moving it toward the other limit of its movement, and means for simultaneously releasing said catch and storing power in said power device.

6. In combination, a sewing machine, a work support mounted so as to be capable of moving back and forth past the machine, means tending constantly to move the support in one direction, a spring adapted to move the support in the opposite direction, and means for intermittently storing sufficient power in the spring to cause it to move the said support.

In combination, a post, a sewing machlne mounted onthe upper end of the post,

a horizontal work support mounted on said post below the machine so as to be capable of swinging back and forth beneath the machine, means tending constantly to move said support in one direction, and means for simultaneously setting the sewing machine in operation and causing the support to move in the other direction.

8. In combination, a post, a sewing machine at the upper end of the post, a vertical shaft revolubly supported at one side of the post, a horizontal bag support mounted on the said shaft and ad ustable lengthwise of the latter, a weight acting on the shaft and adapted to turn it in one direction, a

spring connected to the shaft and adapted to turn it in the other direction when placed under sufficient tension, and means for simultaneously starting the sewing machine and placing said spring under tension.

9. In combination, a post, a sewing machine at the upper end of the post, a vertical shaft revolubly supported at one side of the post, a horizontal bag support mounted on the said shaft and adjustable lengthwise of the latter, means tending constantly to turn said shaft in one direction, and means for simultaneously setting the sewing machine in operation and causing the shaft to turn in the opposite direction.

10. In combination, a sewing machine, a work support mounted so as to becapable of swinging back and forth past the sewing machine, means independent of the sewing machine for moving said support in one direction, additional means for moving sai support in the opposlte direction, and a common controller for said sewing machine and said means.

11. In combination, a sewing machine, a work support movable back and forth past the sewing machine, means for moving sai support in both directions, ing said support at one limit of its movement; and a common controller for said sewin machine, said means and said catch.

12. n combination, a vertical supporting post, a sewing machine in the form of an inverted U attached to the upper end of the post and arranged at one side thereof, an oscillatory vertical shaft arranged beslde said post, a work-supporting table fixed to said shaft at a point below said sewing machine, means for oscillating said shaft 1n both directions so as to carry the table back and forth, and a common controller for said sewing machine and said means.

In testimony whereof, I sign this specification.

GEORGE IIOEPNER.

a catch for hold-

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