US1123721A

US1123721A - Thread-cutter for sewing-machines.

Info

Publication number: US1123721A
Application number: US14064703A
Authority: US
Inventors: Charles H Foster
Original assignee: Union Special Machine Co
Current assignee: Union Special Machine Co
Priority date: 1903-01-26
Filing date: 1903-01-26
Publication date: 1915-01-05
Anticipated expiration: 1932-01-05

Description

, C. H. FOSTER.

THREAD CUTTER FOR SEWING MACHINES.

ALMPPLICATION FILED JAN. ze, 1903.

Patented. $311.5, 1915.

6 SHEETS-SHEET l.

w 1w .d

l www G. H. FOSTER.

THREAD GUTTER POR SEWING MACHINES.

APPLIGATIONFILBD JAN. 26, 1903.

Patented Jan. 5, 1915.

5 SHEETS-BHEET 2.

CHAIN TO FOOT TREHDLE E. E. POSTER.

TEEEAD CUTTER EOE SEWING MACHINES.

APPLICATION FILED JAN. 26. 1903.

Patented. Jan. 5, 915.

5 SHETS-SHEET 3.

C'. H. POSTER.

THREAD CUTTER POR SEWING MACHINES.

APPLICATION FILED JAN. 26, 1903. LWBJML Patented Jan. 5,1915.

6 SHEETS-SHEET 4.

.I l l l l Il I C. H. FOSTER.

THREAD GUTTER IoR SEWING MACHINES.

APPLICATION FILED'IAN. ze. 190s.

' Patented Jan. 5,' 1915.

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.parar ortica CHARLES H. FOSTER, 0F KANKAKEE, ILLINOIS, ASSIGNOR TO UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

THREAD-CUTTER FOR SEWING-MACHINES.

ricami.

application fried January as, 1903.v serial No. 140,647.

Toalt whom, it may concern:

Be it known that I, CHARLES H. FOSTER, a citizen of the United States, residing at Kankakee, in the county of Kankakee, State of Illinois, have invented certain new and useful Improvements in Thread-Cutters for Sewing-Machines, of which the following is a description, reference being had ,to the accompanying drawing, and to the letters and ligures of reference marked thereon.

This invention relates to improvementsin sewing apparatus, and particularly to apparatus for handling and sewing filled bags, and the object of the present invention is to provide a cutting arrangement for cutting off the chain of stitches between the bags, which can be thrown into and out of operation by the operator, but the actual cutting and returning action of which shall be auto-` matic.

The machine shown in the drawings is of the general' type illustrated in my Patent, 875,339, granted December 31, 1907, and also contains features shown and described in my prior Patent 875,513, granted December 31, 1907.

An object of the invention is to provide a cutting device for severing the chain of stitches between stitched articles, which cutting device is operatedy by a continuously running member with connections between the same, and the cutter adapted to be manually controlled, whereby the cutter may be mechanically operate-d at any time at the will of the operator.

A further object of the invention is to provide a .device of the above character wherein the cutter may be operated to cut the stitches between stitched articles without stopping the action of the stitching mechanism.

'll`hese` and other objects will in part be obvious and will in part be hereinafter more fully disclosed.

'Ihe invention is illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of somuch of an apparatus of the type referred to, as is necessary to a complete understanding of my invention; Fig. 2 is a similar view of the preferred form of my invention which embodies the features of the form shown in Fig. 1, but includes certain additional features; Fig. 3 is a plan view of a portion of the apparatus shown in Fig. 2; Fig. t is a Specication of Letters Patent.

. 11 to the machine frame.

Patented l an. a, 1015..

front elevation of the bracket to -Wbichthe Y* machine is secured; Fig. 5 is a. sectional plan view of aV portion of Fig. 3, and illllustrat- 111g particularly the rod or pin for olding the lever out of engagement with thecontinuously' running crank pin; Fig. 6 is a detail perspective view showing .the sewing head with the cutter attached thereto.

Referring to the drawings, and particularly at first to Fig. 1, A represents the sew- 111g machine, and'2 a pulley upon the shaft 3, j ournaled in bearings upon the bracket B, which `supports the sewing machine. The sewingvmachine is of the usual construction and comprises a bed plate 50, an overhanging arm 51 in which vibrates a needle bar 52 carrying a needle 53. Upon this shaft 3 is fastened a disk 4, provided with a projecting pin 5, the shaft and disk being, of course, continuously operated from the constantly running part of the power transnittsr, (not shown), which is belted to pul- So far as the cutter itself is concerned, the arrangement is substantially the same as shown in my prior Patent 875,512, granted December 31, 1907, in which a pivoted lever 6, is adapted to engage the head of the knife supporting shafts, and press Vthe knife G down against an anvil 7 supported upon the lower end of the cylindrical bed plate of the sewing machine. From the upper end of the lever 6, which is pivoted in the goose neck, there projects horizontally a bar 8, which at its inner end passes through the upper end of a vertical lever 10 pivoted at A head on the inner end of the'rod or link 8, prevents said bar from being withdrawn through the vertical lever 10, and the seat for said bar 8 is formed, as shown in section in Fig. 2, to allow for movement of said vertical lever, on its pivot.

The upper end of the vertical lever is normally pressed outwardly by means of the spring 12, the tension of which is regulated by the collar a, and the spring also acts to cushion the shock of the forward movement of the lever 10 after the cutting blow has been struck. Said vertical lever 10 at its lower end is pivoted to a horizontal lever 13, which has a downward y projecting part 14, to which is attached aspiring 15, normally adapted to retain the same in the position shown in the right hand dotted lines. rlhis horizontal lever is provided at its outer end with a hardened steel piece b, (shown in Fig. 2), having a notch c, normally' adapted to engage the pin 5 on the disk 4, and ,beyond the projection forming the notch it slants upwardly and is adapted to be brought into engagement with a roller 16 on the bracket 17, whereby, as the end of the horizontal lever is moved outwardly by the pin 5, it is swung on its pivot, and when the blow of the knife has been struck, is tripped out of engagement with the pin 5.

At its forward end, the horizontal lever is adapted to be engaged by a pin 20, which is tripped by the bell crank lever. 21, journaled on the bracket B. When the -bell crank lever is moved to draw back the pin 20, the left hand end of the horizontal lever 13, -through the action of the lower spring 15 is forced. downwardly, so that its notch c engages the pin 5, said horizontal lever be ing drawn rearwardly, carrying also the lower end of the vertical lever 10, thus forclea ing the upper end of the verticallever forward against the pressure of the spring 12, and causing the knife to operate to cut the chain of stitches. After the knife has been actuated through the movement of the bar 13 by its connection with the pin 5, and released therefrom, the

springs

12 and 15 quickly return the knife to normally raised position and return also the bar 13 to the full line position shown in Fig. 1. The roller has lforced up the outer end of the lever 13 and the pin 2() which has been released engages the upper surface of the lever and holds the same out of contact with the pin 5.

Figs. 2, 3, 4 and 5, represent a somewhat modified and preferable form of my invention.- In these figures, the form of the lever 13 is slightly different, and the arm 14 extends downwardly from the end thereof, the top of the lever being beveled, as shown at e. The spring 15 is also differently attached, as shown. p

,A spring plunger 22, bearing in lugs 23 on the bracket, is set to have a limited movement by the

jam nuts

24 and 25, and on the return of the lever 10, after the blow has been struck, the shock is taken up by this spring plunger, which acts as a stop for the lever 10.

l Instead of the tripping mechanism shown in Fig. 1, a rod or pin 2 6 extending to the right hand side of the machine is provided, which is normally pressed outwardly by the spring 27 to engage the lever 13 and hold it out of engagement .with thel continuously running crank pin. When this rod or pin 26 is withdrawn, the cutting operation takes place, and the springing back of the pin 26 to normal position restores the parts to inoperative position. This rod or pin, is controlled by the operator through the medium of a pivoted lever 28, carrying on its inner end a pivoted spring dog 29, which, when the lever 28 attached to the rod 290 on the bracket 30, is swung to the left against the pressure of spring 31, bearing against the collar 32 on the rod 290, forces the same to the right far enough t0 release lever 13. In this position the spring dog 29 slips by the .collar 40 and allows the pin 26 to be imme- 'to prevent a second and perhaps a third engagement, which would chop and mangle the chain.

The rod 290 is provided near its left hand end with a handle 33, so that the operator may trip the mechanism either with the right hand by manipulation of lever 28, or by manipulation of rod 290 with the left hand. Furthermore, a chainvleading over a pulley 34 may be attached to the lever 28 at one end, and at the other end to a foot treadle, so that the tripping lever may be operated by the foot of the operator, leaving both hands free to manipulate the bag.

It will be understood that various minor modifications and changes may be made, without departing from the spirit of my invention.

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

1. An apparatus for sewing and cutting the connecting threads between stitched articles including in combination sewing inechanism,vmeans for feeding the articles to be sewed thereto, a cutting device in rear of the sewing mechanism and operating across the line of feed to sever the stitching threads, and means for operating said cutting device without stopping the sewing mechanism including a continuously moving member with connections between the same and the cutting device, and manually consewing mechanism and operating across the line of feed to sever the stitching threads yielding means for normally holding said niaarai ngi,

cutting device raised, a continuously moving device, a member connected with said cutting device and adapted to engage said continuously moving device for moving the cutting device to sever the threads, and manually controlled means for holding said member out of engagement with said continuously moving device, said continuously movmg device being independent of the im- 2o means for holding the lever out of engagement with the continuously moving member; substantially as described.

4l. ln an apparatus for sewing filled bags and cutting the threads between the bags, a

sewing mechanism and a cutting device, a

continuously moving member, a lever normally adapted to be engaged by the continuously moving member, connections between the lever and the. cutting device,

' 30 means for holding the lever out of engagement with the continuously moving member, and means for tripping the lever to cause it to be engaged by the continuously moving member; substantially as described. 5. ln an apparatus for feeding and sewing filled bags, and severing the stitches between successive bags, the combination with a sewing mechanism, a feeding device for the bags, and a cutting device anda contin- 40 uously moving member, a swinging level' normally adapted to be engaged by the continuously moving member, devices for holding the lever out of engagement with the continuouslyl moving member, means for tripping the same, and connections between the lever and the cutting device, whereby when the holding4 devices are tripped the cutting device is operated; substantially as described.

5o 6. In an apparatus for feeding and sewing filled bags, and severing the stitches between successive bags, the combination with a sewing mechanism, a feeding device for the bags, and a cutting device and a conti-nuously moving member, a swinging lever normally adapted to be engaged by the continuously moving member, devices for holding the lever out of engagement with the continuously moving member, means 'for eo tripping the same, and connections between the lever and the cutting device, whereby when the holding devices are tripped the cutting device is operated, said connections including a vertical lever, and spring and en lever connections between said vertical leing filled bags, and severing the stitches bever and .the cutter; substantially as described.

7. ln an apparatus for feeding and sewing filled bags, and severing the stitches between successive bags, the combination with a sewing mechanism, a feeding device for the bags, and a cutting device and a continuously moving member, a swinging lever normally adapted to be engaged by the continuously moving member, devices for-holding the lever out of engagement with the continuously moving member, means for tripping the same, connections between the lever and the cutting device, whereby when the holding devices are tripped the cuttingA Se device is operated, said connections including a vertical lever, andv spring and lever connections between said vertical lever and the cutter, and means for adjusting ythe spring; substantially as described.

8. ln an apparatus for feeding and sewing filled bags, and severing' the stitches between successive bags, the combination with a sewing mechanism, a feeding device for the bags, and a cutting device and a contin- 53 uously moving member, a swinging lever normally adapted to be engaged by the continuously moving member, devices for holding the lever out of engagement with the continuously moving member, means for v tripping the same, connections between the lever and the cutting device, whereby when the holding devices are tripped the cutting device is operated, said connections including a vertical lever, connections between the same and the cutter, and a stop to limit the movement of the levers when they have been released; substantially as described.

9. ln an apparatus for feeding and sewtween successive bags, the combination with a sewing mechanism, a feeding device for the bags, and a cutting device and a continuously moving member, a swinging lever normally adapted to be engaged by the con'- J tinuously moving member, devices for holding the lever out of engagement with the continuously moving member, means for tripping the same, connections between the lever and the cutting device, whereby when the holding devices are tripped the cutting device is operated, said connections including a vertical lever, connections between the same and the cutter, and a cushioned stop` to limit the movement of the levers when .120 they have been released; substantially as described.

10. ln an apparatus for feeding and sewing filled bags, 'and severing the stitches -betweensuccessive bags, the combination with a sewing mechanism, a feeding device for the bags, and a cutting device and a continuously moving member, a swinging lever normally adapted to be engaged by the continuously moving member, devices for holdsie ing the lever out of engagement with the continuously moving `member, means for tripping the same, connections between the lever and the cutting device, whereby when the. holding devices are tripped the cutting device is operated, said connections including a vertical lever, connections between the same and the cutter, and a cushioned stop tolimit the movement of the levers when they have been released, said cushioned stop comprising a spring pressed plunger with A Vjam nuts for limiting its movement; subl stantially as described.

11. ln an apparatus for feeding and sewing lled bugs, and severing the stitchesbetween successive bags, the combination with a sewing mechanism, a feeding device for the bags, and a cutting device and a continuously moving member, a lever normally adapted to be engaged by the continuously moving member, a pin normally bearing against said lever, to hold it out of engagementH with the continuously movin member, means for withdrawing said pm from engagement with the lever, and connections between the' lever and the cutting device; lsubstantiallyl as described.

12. In an apparatus for feeding and sewing filled bags, and severing-the stitches between. successive bags, the combinationwith' a sewing mechanism, a feeding device for the bags, and a cutting device and a continuously moving member, a lever normally adapted to be engaged by the continuously moving member, a pin normally bearing against said lever, to hold it out of engage- A- ment with the continuously moving member, meansv for withdrawing said pin from engagement with the lever, said means including a swinging lever, and means for operating it,'and a yielding spring dog adapted to engage the pin and move it in one direction, but to yield under the pressure of the pin in the opposite direction, when the swinging lever is retainedvin retracted position; substantially as described.

' 13. In an `apparatus for feeding and sewing filled bags, and severing the stitches between successive bags, the combination with a sewing mechanism, a feeding device for the bags, Iand a cutting device and a continuously moving member, a lever normally adapted 'to be engaged by the continuously moving member, a pin normally bearing against said lever, to hold it out of engagement with the continuously moving member, means for withdrawing said pin from engagement with the lever, a spring for automatieally returning said pin, and connections between the lever and the cutting device; substantially as described. y

14. VIn an a paratus 4for sewing filled sacks, the combination with a sewin mechanism and means for feeding the sac s thereto, a cutting devicefor severing the chain 'of stitches, and means for operating the cutting device, including a continuously running crank, and connections between the same, and the cutter, and meansfor throwing the connections into and out of action;

substantially as described.

15. In an apparatus for sewing filled bags, a sewing mechanism, and means for feeding the sacks, in combination with a cutter, a continuously operating crank, a lever normally adapted to be engaged by the crank,

and connections between the lever and the cutter, and means for holding the lever out of engagement with the crank; substantially as described.

16. In an apparatus for sewing filled bags, a sewing mechanism, and means for feeding the sacks, in combination with a cutter, a continuously running disk having a pin thereon, a lever adapted to engage the pin, and be operated thereby to give the stroke to the cutter, means for holding the lever out of engagement with the pin, and means for automaticall releasing the lever from the pin as the ormer moves, and connections between the lever and the cutter; substantially as described.

Intestimony whereof I aiiix mysignature, in presence of two witnesses.

CHARLES H. FOSTER.

` Witnesses Trios. E. BoNFmLD,

B. W. ALPINER.