US2150677A - Sewing machine and process - Google Patents

Description

March 14, 1939. H. J. ERNST SEWING MACHINE AND PROCESS Filed Aug. 18, 1936 4 4 Sheets-Sheet l INVENT OR.

llllllll ATTORNEYS.

HEM? a: E/e N571 March 14, 1939. H J. ERNST SEWING MACHINE AND PROCESS Filed Aug. 18, 1936 4 Sheets-Sheet 2 4s v as 42 4' 37: a= 46 EIG.4L l6 /5 o 6 7 77 6 I6 INVENTOR. HENRY J EENBZ ATTORNEYS a March 14, 1939. H J. ERNST SEWING MACHINE AND PROCESS Filed Aug. 18, 1936 4 Shets-Sheet 3 6N r o o a 5 fi W "P" -|l|ll i mm mw M mm mm WW mm mm o a a o 0 mm s 0 0 mm m q Q. wfi h mm mm IINVENTOR. flE/VRY cf ERA/s7- BY M q M ATTORNEYS.

March 14, 1939. H J. ERNST SEWING MACHINE AND PROCESS Filed Aug. 18, 1956 4 Sheets-Sheet 4 H B [5 I16 INVENTOR. BY fife-Iver J ERNST.

ATTORNEYS.

Patented Mar. 14, 1939 UNITED STATES PATENT OFFICE 22 Claims.

My invention relates to a process and device for sewing tape on shoe soles, and particularly the insole of shoes, so that the uppers may be sewn or otherwise fastened to the said tape in the process of shoe manufacture; and this application is a continuation in part of my co-pending application, Serial No. 700,726, flied Dec. 2, 1933, and entitled Sewing machines.

In the employment of my process and machine the tape is fed to the work piece from beneath in a positive way, and the sewing proceeds as usual, the needle passing first through the work and then through the tape. It is an object of my invention to provide a positive but adjustable guide mechanism for the sewing. It is an object of my invention to provide means whereby the sewing can be done with or without tape at will, so that without change in the operation of the sewing machine, the feeding and sewing of the tape can be started at the point desired by the operator, and can be stopped at the point desired by the operator irrespective of a continuation of the sewing itself.

In furtherance of this general object, it is my object to provide a novel means for severing the tape in proper relationship to the sewing operation and for disconnecting the tape fed, while at the same time retaining the severed end of the tape in position for feeding. It is my object to provide means whereby at will, and during the sewing, the feeding of tape may be started. Thus the line of stitching may be caused to project beyond the tape at both ends whereby the ends of the tape are firmly caught.

In carrying out the process of treating soles in accordance with my teachings, the operator commences sewing generally at or near an edge of the sole, and at the proper place causes the tape to be fed and caught in the line of stitching, continues sewing the tape adjacent an edge of the sole for the required distance, then discontinues the feeding of the tape and severs it while the stitching continues, continues sewing while turning the sole so as to come back on the other side, at the proper point resumes the feeding of the tape and at the proper point discontinues it while still forming a line of stitches.

It is an object of my invention to provide adequate positive and convenient mechanism for the purposes described; and the various objects of my invention which have not been referred to -hereinabove will be clear to one skilled in the art upon reading these specifications.

I accomplish my invention by that construction and arrangement of parts and by that series of process steps of which I shall now describe certain exemplary embodiments.

Reference is made to the drawings wherein:

Fig. 1 is a perspective view of a sewing machine with parts in section.

Fig. 2 is a plan view of a portion of the machine bed, looking down along the lines 2-2 of Fig. 1.

Fig. 3 is a plan view of the bed with parts in section, the section lines being the lines 3-3 of Fig, 1.

Fig. 4 is a sectional view across the machine bed and taken along the lines 44 of Fig. 3.

Fig. 5 is an enlarged fragmentary view of the tape slot and the severing mechanism.

Fig. 6 is a view of a portion of the operating mechanism whereby the tape is severed and the feed interrupted.

Fig. '7 is a view of another portion of the same mechanism designed for co-action with the parts shown in Fig. 6.

Figs. 8 and 9 are views showing different stages in the operation of the severing and disconnecting mechanism.

Fig. 10 is a vertical sectional view through the feed mechanism and the control means for the severing mechanism and may be considered as taken along the lines ill--i0 in Fig, 11.

Fig. 11 is a view showing the mechanism underneath the machine bed in plan.

Fig. 12 is a sectional view showing a portion of the feed mechanism and taken along the lines l2-i2 of Fig. 11.

Fig. 13 is a vertical sectional view taken through the rear end of the machine head and showing an alternative feeding arrangement.

Fig. 14 is a sectional view showing the same arrangement as Fig. 13, the section being at right angles and taken along the lines i l-l4 of that figure.

Fig. 15 shows in plan, an exemplary insole treated in accordance with my process and by my mechanism.

In Fig. 1, I have shown a sewing machine having the usual head i and table 5. The main shaft in the head is designated at 6, and arranged to be driven by a belt or by a motor, as may be desired. No special description either of the needle mechanism or of the shuttle mechanism is required since in these respects, the machine is well known in the art. Because of additional mechanism in the base however, such as mechanism to feed and sever the tape, more operating parts are required, and more means for transmitting power from the main shaft 6. Thus I have shown in Fig. 1 in the head I, three difierent eccentrics I, 8 and 9, the purpose of which will be clear hereinafter. The machine has feeding mechanism for a work piece l5. which is to be sewn and the formation of the line of stitches by the machine proceeds as is usual in the art. However, beneath the table 5, there is means for feeding tape Hi from asupply not shown. The tape is fed into position to be caught by the line of stitches formed by the machine.

As I have hereinabove indicated, a primary use for my machine is in the manufacture of shoes where it is desired to sew tape upon an insole as shown in Fig. 15, and hereinafter more particularly described. So as to position the tape properly a guiding mechanism having a guiding foot I! is provided, and this guide mechanism is adapted to be changed as to position by the operator by means of a convenient knee or foot to sew from there on. When 'she desires again to sew tape, she presses downwardly on the operating member l9, and the feeding and the sewing of the tape are resumed. Means are provided for releasing the tape from the tape guide as when it is desired to change the tape. The various mechanisms and the problems connected therewith will be taken up in order by reference to certain of the figures.

The guide By reference to Figs. 2 and 3, it will be seen that the guide mechanism comprises a bar 20 on one end of which is the guide foot H. The bar is pivoted in a channel 2|, and the bar may be rocked in this channel by pressing down on the operating handle 22, whereby to raise the foot Constructions of this character are common and need not be particularly described.

The channel 2| however, is fastened to a rack bar 23, mounted below the bed plate 50. in a suitable channel. The rack' bar has teeth meshing with the teeth of the segmental gear 24, mounted upon a shaft 25 in the frame of the machine. On this shaft, as indicated in Fig. 1, there is a lever 26 having a spring return 2?. The lever is actuated by the linkage mechanism I6, which will be understood as connected to a suitable foot or knee treadle. By this means the operator can gauge and vary the distance of the tape from the edge of the work.

The tape guide By reference particularly to Figs. 4 and 5, it will be seen that below the bed plate 5 there is a suitable slot 26, through which the tape 6 passes. A rotary dog 2'! feeds the tape. The slot is so shaped as at 26a, as to lead the tape upwardly through the bed and into position for sewing against the work piece i5.

Tape severing means As shown in Fig. 3, there is a second rack bar 28, mounted in a suitable slide below the machine bed. This rack bar meshes with a segmental gear 29. To the bar there is attached an operating means 30,'and to this in turn a knife 3|. The end of this knife is most clearly shown in Fig. 5, as comprising a blade 3|a and a rounded member 3|b, underlying the tape IS. The edge of the knife blade 3|a is in sliding contact with the top of the member 26a. In a slot overlying the tape slot, a member 32 is mounted slidably and is urged to the left in Fig. 5 by means of a spring 33. The operating member 30 hasits end shaped to provide a slanting shoulder 30a, and to the member 32 there is attached a cam member 34 having a slanting shoulder 35. When the operating member 30 moves to the left in Fig. 5, the

cam member 34 rides down the shoulder 30a so as to permit the sliding member 32 to press the tape tightly against the end of the member 26. This keeps the tape from twisting and assures the formation of a smooth out. The knife blade 3|a of course, rides over the top of the member 32.

Tape feeding and release mechanism As I have hereinabove indicated, the tape is fed by means of a rotary dog 21, shown in Fig. 4. The tape is held against this dog so as to be fed by means of a lever 36 pivoted as at 31 in the slot 26,and having a projecting operating end 37, this end, as shown in Fig. 3, being T shaped so as to be engaged by'an operating bar 38. The bar as shown at 38a in Fig. 1, is hollowed out below the member 31 so as not to interfere with the passage of the tape IS. The bar 38 is pivoted as at 39, and may be held elsewhere by screws 40, passing through slots in the bar. It will be evident that if the left-hand end of the bar 38 is lowered, it will release the end of the lever 36, so that this lever no longer presses the tape against the rotary feed dog 21. In this way, the tape may be released from the rotary feed dog so as to be withdrawn from the slot 26.

The right-hand end of the bar 36 is carried upwardly and over as shown at 4| in Fig. 4. A spring 42 surrounding a rod 43 bears against a nut 44 and presses the end 4| of the bar 38 downwardly, so as to cause the lever 36 to maintain the tape in contact with the rotary feed dog. A lever operating mechanism 45 in Fig. 1 is pivoted to the bar 38 at 46, and as shown most clearly in Fig. 4, bears an eccentric roller 41, non-rotatably mounted with respect to the lever 45. As the lever 45 is thrown over this roller engages against the machine bed 5 and raises the righthand end ofthe bar 38, so as to release the feed as described.

As will be clear by reference to Fig. 10, the rotary feed dog 21 is mounted on a shaft 93 journaled in a machine frame. This shaft bears a gear 92, meshing with another gear 90, splined on a shaft 5|. By reference to Figs. 11 and 12, it will be seen that this shaft 5| bears a ratchet 52. A pawl housing 53 having a pawl 54, pivotally mounted therein, and actuated by a spring 55 is rotatably mounted on the shaft 5|. It bears a slotted extension 56 to which a stud may be mounted as by means of a bolt 51. This stud rides in a channel 58, which is part of an operating arm 59 fixed on a shaft 60, all as is shown in Fig. 12. It will be clearly understood that as the shaft 60 rocks in the direction of.the arrows in Fig. 12, the pawl housing 53 will likewise rock. The engagement of the pawl with the ratchet 52 will provide for rotation of the shaft 5|, always in the same direction.

To prevent a tendency of the shaft 5| to turn back with the pawl, I provide frictional means constituting a spring 6| shown in Fig. 11, hearing against a washer 82, held as by means of bolts 88 to the end of the shaft BI, and at its other end bearing against a washer 84 on a bearing member 88 of the machine frame.

The shaft 88 is thus the means whereby a tape feeding motion is transmitted from the main shaft 8 of the machine to the rotary feed dog ultimately. In Fig. 11, the shaft 88 is shown as having an arm 88, to which the arm 81 of the eccentric I is pivoted.

For a better understanding of the machine mechanmm it may be pointed out in connection with Fig. 11, that beside the shaft 88, there are two other shafts in the base of the machine. The shaft 88 is the shuttle shaft, and is connected to a shuttle mechanism 88 of known type. This shaft bears an arm 88, which is connected by means of a pin 18 to a rocker arm 1|. This arm in turn is pivoted to the arm 12 of the eccentric 8 as is usual in a sewing machine. The operation of the eccentric 8 is to give to the shuttle shaft 88 a rocking motion. The third shaft is shown at 18. An arm 14 on this shaft is pivoted as at 18 to the arm 18 of the eccentric 8, whereby the shaft 18 is given a reciprocatory motion.

The shafts 88 and 18 combine to produce the reciprocatory and up and down motion of the main feed dog of the sewing machine. The main feed dog is indicated at 11 as fastened to an operating arm 18. The left end of this arm is pivoted as at 1-8 to a crank 88 on the shaft 88. The other end of the bar 18 is bifurcated as at 18a to engage a pin 8|, mounted upon an arm 82 fixed on the shaft 18. The combined rocking motions of the shafts-88 and 18 give to the feed dog 11, the requisite back and forth and up and down motions as well known in sewing machines. There will, of course, be a suitable presser foot sue? as the rotary presser foot 88, or some equiva- Control mechanism Control of the tape feeding mechanism is had through a member shown at l8 in Figures 1, 2 and 3. By reference to Fig. 6, it will be seen that the operating handle 19 is affixed to a shaft 84. and that this in turn is keyed or pinned to a release bar 85. Surrounding the shaft 84 there is a sleeve 88, to the upper end of which a segmental pinion 28 is attached. To the lower end an angular crank 81 is keyed. From the angle of this crank a pin 88 projects downwardly.

In Fig. 10 these elements are shown in assembled relationship. The sleeve 88 is journaled in the bed 5 of the sewing machine. The pinion 28 lies in a recess in the bed; and by reference to Fig. 3 it can be seen how this pinion meshes with the rack 28, which actuates the severing knife 3|.

Referring now to Fig. 8, it will be seen that a striker bar 88 is pivoted upon the pin 88. The upper end of the angle member 81 lies against the hub of a gear 88, splined but slidable upon the feed shaft 5|. A spring 8| urges this gear to the right in the several figures. The gear 88 meshes with a gear 82 on the shaft 83 which bears the rotary feed device 21. With the gears in the position shown in Fig. 8, the shaft 83 is connected to the shaft 5| so that the latter shaft can drive the rotary feed dog 21. If the gear 88 is pushed to the left against the tension of the spring 8|, as shown in Fig. 9, the driving connection will be broken.

The mere operation of rotating 'the control handle i8 however, does not effect disengagement of the gears 88 and 82. What happens is that the release bar 85 throws the knock-out bar 88 to the position shown in Fig. 8, where the end of this knock-out bar lies in the path of a cam member 84 on the shuttle shaft 88 of the machine. When this shaft rotates to the position shown in Fig. 9, the knock-out bar 88 is pushed upwardly thereby rocking the angular lever 81, and causing the end of it to move the gear 88 to disengaged position. Thus the disengagement of the feed is accomplished in timed relationship to the stitching. The angular lever 81, as has been said, is keyed to the sleeve 88. Therefore, when the angular lever moves to the position shown in Fig. 9, it moves the sleeve and in turn the pinion segment 28 attached thereto. In this way the knife is also actuated in timed sequence to the sewing operation. The knock-out bar 88 is urged to normal position by a spring 88, shown in Figs. 9 and 11. The normal position of the knock-out bar is shown in the latter figure. A spring 88, one end of which is attached to a link 81, mounted on a pin 88, and the other end of which is attached to the frame of the sewing machine as at 88, serves to urge the angular lever 81 into the normal position shown in Figs. 8 and 11. I

In order to prevent the recurrence of a out each time the shuttle shaft 88 oscillates, and in order to keep the rotary feed dog 21 disconnected, I provide a latching mechanism comprising a pivoted latch 88 urged upwardly by a spring I88. The end of the pin 88 is beveled as shown at l8l, so that it can depress and ride over the latch member 88. When the angular lever 81 is in the position shown in Fig. 9, the latch 88 engages behind the pin 88 and holds the lever in that position.

It will be noted in Fig. 10, that the shaft 84 is considerably longer than the sleeve 88, and that the shaft and the operating handle l8 are urged upwardly by a compression spring I82. The latch 88 lies beneath the end of the shaft 84, so that if the operating lever I8 is depressed from above, it will serve to depress the latch 89, thereby releasing the pin 88 and permitting the angular lever 81 to return to the position shown in Figs. 8 and 11.

In the operation of this part of my device, if tape is being sewn and the operator desires to discontinue the sewing of the tape, she moves the operating handle l8 to the left. This, through the operation of the bar 85, causes the throw-out bar 88 to assume the position shown in Fig. 8. When the shaft 68 oscillates, the cam 94 strikes the throw-out bar and brings the angular lever 81 to the position shown in Fig. 9. This does two things:-first the end of the angular lever carries the gear 88 to the left, thereby disengaging it from the gear 82, anddiscontinuing the rotation of the feed dog 21. Second, it rotates the sleeve 88, and with it the segmental pinion 28, which moves the rack 28 to the left, effecting a. severingcut on the tape by means of the knife blade 34 also in timed sequence to the sewing operation.

When this happens the pin 88 engages behind the latch member 88. Thus the gear 98 is maintained out of engagement with the gear 82 and. the knife 3| is prevented from making additional cuts. The sewing, however, can continue in an uninterrupted way. Of course, as soon as the cam 84, which has depressed the knock-out bar 88, releases that bar, the bar swings to the left under the influence of the spring 85, out of. the way of the cam. Sewing is then continued without tape feeding for as long as may be desired.

iVhen the operator desires to resume the feeding and sewing of tape, she strikes downwardly upon the operating handle 19. The effect of this is to release the latch 99 permitting the angular lever 3'! to swing back under the influence of spring 96, to the position shown in Figs. 8 and 11. The gear 90 thereupon engages with the gear 92 and the feeding of tape is resumed.

In Figs. 13 and 14, I have shown alternative operating mechanism. Here the shaft is provided with the same eccentric 9 as before, for operating the shuttle shaft 68, and with the eccentric 8 for operating the shaft 60. In place however, of the eccentric I for operating the shaft 73, I have shown a pair of elliptical gears I03 and id. The first of these is fastened upon the shaft 6. The second is mounted upon a supplementary shaft I05, mounted in the machine frame. The gear IM bears a pin or crank member I06, from which a link i8! passes to the lever 14. A more marked variation of motion can be obtained in this way. The shaft 5| which turns the rotary feed dog 2'! through mechanism heretofore described, may in this instance be rotated continuously. A worm I08 may be fastened either on the shaft N or on the shaft 6. Where it is fastened upon the shaft I05, as shown, the worm will have uneven motion imparted to it through the action of the elliptical gears. A worm gear I09 engages the worm I08, and is fastened upon a shaft H0 suitably journaled in the machine frame and bearing on its lower end a bevel gear III. This in turn meshes with a bevel gear H2 on the shaft 5|. I prefer in this instance to make a frictional connection between the gear H2 and the shaft. To this end I pin an abutment member I [3 to the shaft and place between it and the gear H2, a compression spring I I4. This permits continued rotation of the gears if for any reason the rotation of the shaft 5| should be stopped.

It is to be understood that this modification provides a different means for imparting motion to the shaft 5!. The shaft, incidentally in this modification, is continued all the way out to the right hand end of the machine as shown in Figure 13. While in the first described embodiment the shaft 5| was given an intermittent movement, in this modification it is given a continuous but pulsating movement. It will be understood that the mechanism described immediately above takes the place of the assembly, including the lock nuts 63, washers 62 and 65, and spring 6|, as well as the mechanisms comprising the ratchet 52, the pawl housing 53 together with the arm 56, the pawl 56, spring 55, stud 51, and the arm 59.

In Fig. 15, I have shown an insole H5 treated in accordance with the process of my invention. In making this insole the operator began to sew at the point marked A. At the point marked B, she depressed the operating handle l9 and began to feed the tape i5, which was caught by the line of stitching H6. By means of the guide member I1, she positioned her tape upon the insole as desired. At the point C, she threw the operating handle l9 to the left, thereby severing the tape and discontinuing the feeding thereof, although the line of stitching continued to the point D, where she turned the sole and continued sewing in the same manner adjacent the opposite edge thereof. At the point E, she began feeding the tape again, and at the point F, discontinued it.

The face of the insole shown in Fig. 15, was the lower face during the sewing operation. The

tape was fed from beneath. The operator did not see the tape as it was being sewn, but could control its position and its starting and ending points as aforesaid. The sewing operation on this sole was continuous and the operation of the machine was not interrupted from the time the sewing operation began until the operation ended. It will be seen at both ends of the sole the line of stitching continues beyond the ends of the tape; and the ends of the tape are securely caught in the line of stitching.

Modifications may be made in my invention without departing from the spirit thereof.

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

1. In a sewing machine for sewing tape or the like, to a work piece, a fixed tape guide, feeding means for moving tape in said guide, means for severing said tape and means for actuating said severing means in timed sequence to the sewing operations of said machine.

2. In a sewing machine having the usual sewing mechanism, including an operating shaft beneath the bed of said machine, a fixed tape guide, feeding means for tape and severing means for tape, operating means for said severing means, manual control means for said operating means and means for transmitting power to said operating means from said shaft in timed sequence to the movements thereof.

3. In a machine for sewing tape to a work piece, fixed guiding means for tape, feeding means for tape and severing means for tape, means for actuating said severing means and for concurrently de-energizing said feeding means, and means for causing actuation of said last-mentioned means in timed sequence to the sewing operations of said machine.

4. In a sewing machine, sewing mechanism,

tape guiding means, tape feeding means and tape severing means, a common means for operating said severing means and for de-energizing said feeding means, means for actuating said operalng means in timed sequence to the sewing operations of said machine and releasable means for retaining said last-mentioned means in actuated position.

5. In a sewing machine, a fixed tape guide, severing means for tape passing throughsaid guide, means for actuating said severing means in timed sequence to the sewing operations of said machine and releasable means for maintaining said severing means in inactive position after actuation thereof.

6. In a sewing machine for sewing tape onto a work piece, a bed, a fixed tape guide in said bed, means for feeding tape in said tape guide, severing means for said tape and means for actuating said severing means in timed sequence to the sewing operations of said machine whereby said tape may be severed during the continuance of a sewing operation and the severed end of said tape caught and held to said work piece by thread forming a part of a line of stitching made by said machine, passing over the severed end of said tape.

7. In a sewing machine having a bed, a tape guide in said bed, a rotary feed dog for said tape and releasable driving means for said rotary feed dog, severing means for said tape, concurrently operating means for said severing means and said driving means and means for actuating said operating means in timed sequence to the sewing operations of said machine for the purpose described.

8. In a sewing machine having a bed, a tape guide in said bed, a rotary feed dog for said tape and releasable driving means for said rotary feed dog, severing means for said tape, concurrently operating means for said severing means and said driving means and means for actuating said operating means in timed sequence to the sewing operations of said machine for the purpose described, and latching means for said actuating means.

9. In a sewing machine having a bed, a tape guide in said bed, feeding means for tape moving in said guide, a releasable driving mechanism for said feeding means, a severing means for said tape, common operating means for said last two mentioned means, and manual control means, said operating means having actuating means adapted to be brought into a position for actuation by a moving part of said sewing machine, said manually operated means adapted to bring said actuating means into position for said actuation.

10. In a sewing machine having a bed, a tape guide in said bed, feeding means for tape moving in said guide, a releasable driving mechanism for said feeding means, a severing means for said tape, common operating means for said last two mentioned means, and manual control means, said operating means having actuating means adapted to be brought into a position for actuation by a moving part of said sewing machine, said manually operated means adapted to bring said actuating means into position for said actuation and means for latching said operating means in actuated position.

11. In a sewing machine of the character described, a bed, a tape guide in said bed, tape feeding means in said guide, releasable driving means for said feeding means, a tape severing means and a conm'ion operating means for said tape severing means and said driving means, actuating means for said operating means comprising a member adapted to be moved into a position of engagement with a moving part of said sewing machine, latch means for holding said operating means in actuated condition and manual control means, one movement of which serves to bring said actuating means into actuating position and another movement of which serves to release said latch means.

'12. In a sewing machine for the purpose described, a bed, a feed shaft and an operating shaft, a tape guide in said bed, a rotary feed dog in said tape guide, a releasable driving connection between said dog and said feed shaft, a slidable tape severing means, a shaft, means on said shaft for sliding said tape severing means, means on said shaft for disconnecting said driving connection, a cam on said operating shaft, a movable member adapted to be struck bysaid cam to operate said severing and driving means, and means for bringing said last-mentioned member into a position for actuation by said cam,

13. A sewing machine for the purpose described and having tape severing, feeding and guiding means, a control means comprising a hollow shaft journaled in said bed, pinion means on said shaft engaging said severing means, lever means on said shaft for disconnecting said feeding means, a pivoted striker bar on said lever means for actuation by a cam on a moving element of said sewing machine, a shaft passing through said hollow shaft and bearing moving means for said striker bar.

14. A sewing machine for the purpose described and having tape severing, feeding and guiding means, a control means comprising a hollow shaft journaled in said bed, pinion means on said shaft engaging said severing means, lever means on said shaft for disconnecting said feeding means, a pivoted striker bar on said lever means for actuation by a cam on a moving element of said sewing machine, a shaft passing through said hollow shaft and bearing moving means for said striker bar, latch means for latching said lever in actuated position, said latch means being located so as to be released by an axial movement of said last-mentioned shaft.

15. In a sewing machine, a main drive shaft and a pair of shafts cooperating to actuate a main machine feed, an eccentric mounted on said main shaft and an operative connection between said eccentric and one of said last-mentioned shafts, an elliptical gear on said main shaft, a second elliptical gear on a supplementary shaft and an operative connection between said second elliptical gear and the second of said feed operating shafts.

16. In a sewing machine of the character described, tape guiding means and rotary tape feeding means, a connection between said feeding means and a feed shaft, a main shaft, an elliptical gear on said main shaft, a second elliptical gear on a supplementary shaft and meshing with said first gear and a continuous driving connection between said supplementary shaft and said feed shaft.

17. A process of sewing tape to a work piece which comprises commencing a line of stitching in said work piece and, intermediate the said line of stitching, feeding a tape thereto, so that the end of said tape is caught in said line of stitching, continuing to sew said tape to the extent desired, then severing said tape in timed sequence to the formation of stitches in said line of stitching so that g is caught in said line of stitching, and continuing the formation of said line of stitching, all of said operations being carried on without interruption of the sewing operation, and locating the position of said tape on said article by means of a movable guide for said article, and by moving said guide during said sewing operation.

18. A process of sewing tape to a work piece such as the insole of a shoe, which comprises commencing the formation of a line of stitching by means of a sewing machine in said work piece and during continuance thereof feeding a tape from beneath to said work piece so as to cause said tape to be caught in said line of stitching and aferwards severing said tape in timed sequence to said line of stitching and continuing the formation of said line of stitching, all as a sequence of operations during the uninterrupted sewing of said work piece and locating the position of said tape on said article'by means of a movable guide for said article and by moving said guide during said sewing operation.

19. A process of treating insoles for lasting, which comprises forming a line of stitching in an insole having a relationship to the edge thereof and during the formation of said line of stitching feeding a tape thereto from beneath said insole, so that the needle used in the sewing passes first through said insole and then through said tape, so that the end of said tape is caught in said line of stitching, continuing to sew said tape while the severed end of said tape proceeding with said stitching along one side of said insole, severing said tape in timed sequence to the formation of stitches in said line of stitching so that the severed end of said tape is caught in said line of stitching, and continuing the formation of said line of stitching to a point adjacent an end of said insole, thereupon, While continuing the operation of sewing, turning the insole so that the line of stitching proceeds in relation to the other side of said insole, and repeating the operations hereinabove set forth, finishing said insole with a line of stitching extending beyond the end of the tape.

20. In a sewing machine, means forming a tape feeding guide, a rotary feed dog having a portion eflective upon tape in said guide, a pivoted lever having a portion located to press tape in said guide against said dog, and means for operating said lever, said means comprising resilient means for holding said lever in tape feeding position and manually operable means operating against the force of said resilient means to permit said lever to move to non-feeding position, whereby tape may be withdrawn from said guide.

21. In combination in a sewing machine, means forming a tape feeding guide, a tape severing knife moving substantially transverse to said guide, and a. means operable in response to movement of said knife to press 'said tape fiatwise against a face of said guide, whereby to hold said tape during the cutting operation.

22. In combination in a sewing machine, means forming a tape feeding guide having an upwardly directed end portion, a knife horizontally slidable across said end portion, a tape holding means horizontally slidable in a difierent direction to press said tape against the upwardly directed portion of said guide means during a cutting operation, means for urging said last mentioned member into tape holding positionv and means on said knife, effective upon movement thereof, to

control the position of said tape holding means. 20

HENRY J. ERNST

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