US1255802A - Straightaway zigzag sewing machine. - Google Patents

Description

n. s; SEYMOUR.. STRAIGHTAWAY ZIGZAG SEWING MACHINE.-

ABPLIVCATION FILED MAY 24. m3. 1,255,;02

Patented Feb. 5,- 1918.

5 SHEETSSHEEF l.

APPLICATION FILED MAY 2*. I913.

Patented Feb. .5

5 SHEETS-SHEET 2.

D. S. SEYMOUR. STRAIGHTAWAY ZIGZAG SEWING MACHINE. APPLICATION FILED MAY-29.1913

Patented. Feb. 5, 1918.

5 su'ssrs-suzzr a.

D. S. SEYMOUR. STRAIGHTAWAY ZLG ZAG SEWING MACHINE.

APPLICATION FILED MAY 24, 1913- Patnted Feb; 5,1918.

5 SHEETS-SHEET 4.

n. s. SEYMOUR. I STRAIGHTAWAY ZIG-ZAG SEWING MACHINE.

APPLICATION FILED MAY 24. 19I3- Patented Feb. 5, 1918.

5 SHEETS-SHEET 5.

hist rian s rains have ornate DUDLEY S. SEYMOUR, O F OAK PARK, ILLINOIS, ASSIGNOR T0 UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

STRAIGHTAWAY ZIGZAG SEWING MACHINE.

Application filed May 2 1-, 1913.

To all whom it 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 certainnew and useful Improvements in Straightaway Zigzag Sewing li lachines, of which the following is a description, reference being bad to the accompanying drawing and to the figures of reference marked thereon.

' The invention relates to new and useful improvements in the sewing machines which are capable of sewing either straight-away or zig zag lines of stitching, and more particularly to machines of this character which may be adjusted so as to pass from one type of sewing to the other without stopping the stitching mechanism.

An object of the invention is to provide a simplified means whereby the needle may be vibrated laterally, or held from lateral vibration as desired, and whereby the mechanism for shifting from one character of stitching to the other may be of few parts, and easily adjusted and shifted.

A further object of the invention is to provide a device of the above character with means which is independent of the shifting devices for locking said shifting devices so that the needle will produce only zig zag stitching.

A still further objectof the invention is to provide devices operated by ashifting lever or mechanism which controls the tension on the needle thread, whereby said tension may be limited or decreased during the zig zag stitching.

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 l is front view of a sewing machine having my improvements applied thereto;

Fig. 2 is a rear view of the same;

Fig. 3 is an end view of the machine with a portion of the work support. broken away to show the feed dog and the looper;

Fig. 4 is a sectional view transversely of the machine showing in side elevation the Specification of Letters Patent.

Patented Feb. 5, 1918.

Serial No. 789,759.

vibrating mechanism and the devices for shifting from straight-away to zig zag stitching I Fig. 5 is a similar view with the parts locked for zig zag stitching;

Fig. 6 is a detail in perspective showing the arms which are connected for causing the needle to vibrate and the devices for connecting the arms and for controlling said connection;

Fig. 7 is a top plan view partly in section,

showing the lever and its connection for causirx the shifting from straight-away to zig zag stitching;

Fig. 8 is a detail in perspective showing the presser foot, the upper feed and the manner of raising the same with the presser foot;

Fig. 9 is a detail in section showing the supporting plate for controlling the reciprocation of the needle bar raised, and the locking head in different positions in dotted lines;

Fig. 10 a similar view with the plate lowered;

Fig. 11 is a detail partly in section and partly in side elevation showing a modified form of the locking means for holding the parts for straight-away stitching.

Fig. 12 is a plan view of the same.

Fig. 13 is a view in side elevation and partly in section showing the manner of mounting the block for holding the parts when. disconnected from the vibrating mechanism.

The sewing machine to which my invention is applied consists of a bed plate 1, on which is carried a work support An overhanging arm 8 is mounted on the bed plate, and a needle lever l is pivoted to said overhanging arm. This needle lever is vibrated by an eccentric strap 5 which cooperates with an eccentric on the main shaft 6.

The needle bar 7 is mounted in the swinging gate 8. Thisswinging gate is pivoted on a stud 9 carried by the overhanging arm. Said swinging gate is formed with hearings in which the needle bar reciprocates. Said needle bar is connected by a link 10 to the needle lever 4:. A needle 11 is mounted in said needle bar.

A. presser foot 12 cooperates with the lower feed dog 13, which is moved back and forth in the usual manner. This presser foot is mounted on a presser bar lat, which slides in the forward end of the overhanging arm. Cooperating with the needle 11 beneath the work support is a looper 15, which is reciprocated by a link 16 connected to the needle lever 4.

The needle thread passes from the supply through a thread guide 17 and then through a tension 18. 'After leaving the tension 18 said thread passes through a second tension 19, a thread clamping device 20, which is controlled by the needle lever, and thread guides 21, 22 and 23, to the needle.

The swinging gate 8 is provided with an arm 24 which extends laterally across the needle head at the forward end of the overhanging arm, underneath said arm. A shaft 25 is j ournaled in bearings 26 and 27 carried by the overhanging arm. Said shaft is provided with a downwardly projecting arm 28. At the lower end of said arm is a ball stud 29. A second ball stud 30 shown in dotted lines in Fig. 3 is carried by the inner end of the arm 24. A link 31 connects the ball studs carried by the arms 24: and 28. From the above it will be apparent that when the shaft 25 is oscillated, the arm 28 will be moved back and forth, swinging the arm 24.- back and forth, and thus vibrating the swinging gate and positioning the needle bar in different vertical planes alternately for forming ziz Zag stitching. It will also be apparent that when the shaft 25 is stationary, and held from movement. the swing ing gate will also be locked against lateral movement, which will hold the needle bar so that the same will reciprocate in the same fixed vertical plane fOr straight-away stitch- The shaft 25 is oscillated for vibrating the needle laterally by the following devices. An arm 32 is clamped on said shaft 25 and projects downwardly therefrom. A second arm 33 is carried by a collar 34 loosely mounted on the shaft and held from longitudinal movement thereon by a fixed collar This sleeve is located between the fixed collar and the fixed arm 32. The arm 33 is provided with a laterally projecting stud 36. A link 37 is journaled at one end of said stud. The other end of said link 37 is journaled on a pin 38 which connected to the segment 39. The segment 39 is pivoted on a stud 40 carried by the standard of the overhanging arm. This segment plate is formed with a fork at]. which engages an eccentric 4.2 carried by a stub shaft journaled at 43 to the standard. This stub shaft is provided with a gear at which meshes with a gear 45 on the main shaft 6. These gears are so proportioned that the segment 39 is moved in one direc tion during one complete rotation of the shaft and is moved in the opposite direction during the next complete rotation of the main shaft. The pin 38 is adjustable in a slot in the segment 39, toward and froi the fulcrum of the segment, so that the throw imparted through the link 37 to the arm 33 may be varied.

The arm 33 is locked to the arm 32 by a lug 46, which is formed at its upper face with square shoulders adapted to. fit within a. square recess 47 formed in the lower end of the arm 33. This lug l6 is carried by head 48 which is mounted on the stem 49-, adapted to slide freely in a cylindrical recess formed in the arm 32. A bar 50 also carried by. the head 48 extends vertically through an opening formed in a projection 51 carried by the arm 32. This bar 50 prevents the head from oscillating in the arm' 32. A spring 52 located within the recess in the arm 32 normally presses the head 48 downwardly andforces the lug l6 out of the recess 47. The head is moved in, the opposite direction preferably by a lever 53, which is suitably connected to a treadle or knee shift, whereby said lever may be read ily moved by the operator. This lever is fulcrumed at 54: to an arm 55'rigidly carried by a bracket- 56, mounted on the bed plate 1 of the machine. This bracket extends above the surface of the work support 2, and is provided with bearing'lugs 57 and 58. A rod 59 moves vertically in said bearing lug and is provided with a flat plate 60 at its upper end. The head 48, as clearly shown in Fig; 1, is forkedand a roller 61 is journaled' in said forked end. and said roller normally rests on the flat plate 60. The lever 53 is forked at its inner end and engages a pin 62 attached to the supporting shank of the plate 60, which shank also carries, or is formed as a part of, the rod 59. The lug 57 is slotted so as to permit said pin 62 to move vertically. When the cute end of the lever 53 is'depressed, as shown. in Fig. i, said pin 62 is raised, which lifts the plate 60 and inasmuch as. the roller 61 rests on the plate, the head 5L8 will be raised, compressing the spring in the arm 32, and lifting the lug; e6 so that it will be brought into registerwith the slot or recess 4:7 in the arm 33. This locks the arm 32 to the arm 33, and the arm 32 will then partake of the oscillations of the arm 33 and the roller 61 will move back and'forth on the supporting plate 60. It will thus be seen that av depressing of the lever 53 by the treadle or knee shift will lock the arms 32 and 33 together.

-When the treadle is released, a spring 63,

which encircles the rod 59 and bears at its lower end against the collar 6e attached ioo to said rod, willv force the rod downwardly,

depressing the plate 60 and allowing the spring 52 to force the head48 downwardly relative to the. arm 32, and thus force the lug 46 out of the recess 4t? and release the arms 32 and 33. This allows the arm 33 to continue to vibrate free of connection with the arm 32.

As a means for preventing the arm 32 from moving when'disconnected from the arm 33 so as to hold the needle fixed in a vertical path of reciprocation, I have provided a block 65, which is fixed to the bracket 56 and said block is formed with a V-shaped recess 66. The lower face of the lug t6 is also preferably slabbed so as to form a V-shaped surface corresponding to the if-shaped recess in the block. "l Vhen the lug 46 is depressed by releasing the treadle, as above noted. the lower V'shaped end thereof will engage the recess 66, and as the block 65 is fixed, it will hold the arm 32 from movement. The lower face of the lug is shaped as above noted, so as to facilitate the disengagementof this lug from the fixed block, and the engagement thereof with the arm Vlhcn the treadle is depressed to raise the lug, it will be noted that the upper shoulders of the lug, as soon as they engage within the recess 4-7, will be locked so as to move with the arm This movement of the lug by the machine may occur before it is fully seated in the recess a7, and withdrawn from the recess 66. The lateral movement of the lug, however, will cause the inclined face thereof to slide up the inclined face of the recess 66, and this will force the lug into its seat. I am able by this construction to lock the parts positively and rigidly together by ver little movement thereof.

It may occur that when the lug 46 is thrown upward by the action of the spring 63, that said lug will catch against the shoulder of the recess 47, so that the lug will be carried along with the moving arm 33, but will be unable to seat in the recess 47. In order to prevent the breaking of the parts under such conditions, I have provided the block 65 with a supporting stem 65, which extends through a. suitable opening formed in the bracket 57. This stem is reduced, so as to form a shoulder 65. A spring 65 seated in the recess, surrounds the stem 65 and engages the shoulder 65, so as to nor mally force the block 65 upward. A nut 65 on the lower end of the stem 65 limits the upward movement thereof.

7 In order to prevent the block from swinging on its supporting stem, I have provided a pin 65 which is carried by the block 65 and extends into a suitable opening formed in the bracket 57 This pin slides freely in the opening, and allows the block 65 to move up and down without turning about the axis of the stem.

The spring 65 is of much greater tension than the spring 52, which normally presses the lug 46 downward, so that the block 65 is in effect a rigid block, so far as its coiiperation with the spring-pressed lug is concerned. The only yielding of the block 65 through the compressing of the spring 65, is due to the positive interlocking of the lug 46 with the arm 33, so that when. the arm 33 swings laterally the inclined face on the lug 46 must depress the block 65, or otherwise the parts will be broken.

From the above, it will be apparent that l have provided a locking device in the lug 46, for causing the needle to be vibrated, and for holding the needle from vibration during the straight-away stitching. This locking device is in effect controlled by two spring pressed members, which are oppositely disposed to each other, one of the spring pressed members being the supporting stem or rod for the lug 46, which is pressed downwardly by the spring 52, and the other, the block 65 with the V-shaped recess therein adapted to engage said lug which is spring pressed upwardly by the spring 65.

It will furthermore be noted that these two springs are of different tensions, so the spring 65 will compress the spring 52 and move the lug 46 into the recess 47, as soon as these parts are brought into register. That is to say, the lug 46 is caught by the shoulder of the recess 47, and the block 65 depressed as the lug moves with the arm Upon the return movement of the arm 33 when the lug 46 is brought into register with the recess 47, the spring 65 will move the lug up into the recess.

It will be understood, of course, that when the parts are locked, as above noted, the vibration of the arm 33 which depresses the block will carry the lug 46 out on to the flat horizontal face thereof.

The operation of my device, as above described, is thought to be apparent. lVhen the treadle is depressed, the arms 32 and 33 are locked together, and therefore, the shaft ,25 will be oscillated, so as to swing the needle gate and move the needle bar laterally. The timing of the eccentric is such that this swinging of the needle 1115 gate takes place when the needle is above the fabric, so that the needle may be moved laterally and positioned in different vertical planes for stitching.

The timing of the gear wheels which Op 120 crate the eccentric is also such that the needle bar is moved laterally in one direction only during each complete rotation of the shaft. If the lug 4:6 is raised at the time when the recess 47 is not directly above 125 the lug, there will be no engagement between the lug and recess. As soon, however, as the recess is brought into proper alinement for engaging the lug, then the parts may be locked together.

l l O This recess is so positioned relative to the swinging movement of the arm 33 that the locking of the parts together for oscillating the needle bar canonly occur when the needle is above the fabric and at the proper time for lateral oscillation.

Furthermore, if the lug is moved so as to be disengaged from the recess at a time when the arm is at one side of the V-shaped recess in the fixed holding block, said lug will strike against the fiat upper face thereof and prevent disarrangement until said lug 46 is in position to seat in the recess, and the forcing of the lug downwardly will cause the inclined face thereof to ride on the inclined face of the recess, and the swinging of the arm 32 until said lug fits or registers completely with the recess 66. In this position the needle is properly set and held in a fixed vertical path for forming straightaway stitching. This fixed block may be so positioned that the straight-away stitching will be in line with the needle punctures formed at one extreme only' of the lateral vibration of the needle. I am able thereby to control the needle, if desired, so as to stitch over an edge during zig zag stitching and'stitch adjacent to the edge in line with the needle punctures in the material for straight-away stitching.

lVhen, therefore, it is desired to stitch straight-away theoperator releases the treadle and the parts are returned to such position as to release the arm 33 from engagement with the arm 3:2, and the arm 32 will be locked from movement during the straight-away stitching.

My device is especially adapted for stitching the uppers of shoes, wherein a part of the seam is desired to be a zig zag over-edge seam, so that the finished seam may be turned out flat and the edges abutted, while the rest of the seam is a straight-away through and through seam which holds the edges superposed when the parts of the uppers are separated. It will readily be seen that the machine may be set for Zig zag stitchingand at the proper point, by the shifting of the treadle, the machine may be caused to stitch straight-away stitching without stopping the stitching mechanism, so that the operator may pass quickly from a zig zag stitched seam to a straight-away stitched seam. Or, the operator may stitch, if desired, a straight-away seam and pass directly and without stopping the machine to a zig zag stitched seam.

Thereoare instances in which the operator may desire to stitch a number of uppers of shoes wherein the zig zag stitching is used throughout the seam. In order to release the operator from the strain of holding the treadle or knee shift for this continuous zig zag stitching, I have provided a hand lever (37. This lever is pivoted at 68 to the arm 32 and is provided with a locking notch 69, which is adapted to engage a pin 70 carried by the bar 50, lVhen the lever 67 is swung so as to engage the pin, as shown in Fig. 5, the head 48 may be raised and held in raised position solely through the action of this locking lever, and thereby the machine is locked for zig zag stitching. This locking device, however, is not intended for shifting from straight-away to zig zag stitching while the machine is in operation. ,7

In Fig. 11 of the drawings I have shown a modified form of mechanism for holding the parts so'that the machine will continue to do zig zag stitching when the operator releases the treadle. In this form a lever 71 is fulcrumed at 72 to the work support? and said lever carries an adjustable stop screw 73, which is threaded into the enlarged end of the lever and is held in adjusted positions by the set nut 74. The outer end of the lever is bent downwardly, as at 75, to prevent catching of the material. This lever 71 is so positioned relative to the lever 53 that when said lever is depressed by the downward movement of the treadle, the stop screw 73 may be moved underneath the inner end of the lever 53 and hold said inner end raised, although the treadle is released from pressure. This holding of the inner end of the lever raised, holds the parts position for zig zag stitching, as has been above described. 7 This lever may be readily moved to active position without stopping the stitching mechanism, as will be obvious from the construction and operation thereof. It may also be moved so as to release the machine from zig zag stitching without stopping the stitching mechanism.

hen the machine is set for zig zag stitching, the amount of thread given to the needle should be slightly greater, or, in other words, the thread should be freer from tension. I have provided devices whereby a portion of the tension on the needlethread may be released upon the shifting of the lever to cause the machine to produce zig zag stitching. This is accomplished by a tension releasing lever 7 6. A releasing fork or finger 77 is adjustably secured to the lever by screws 78. This releasing fork is so positioned as to enter between the tension disks of the tension 18. and separate the same so as to render said tension 18 inactive. The lever 76 is pivoted to the overhanging arm at 79, as indicated in dotted lines in Fig. 1. The other end of the lever is'formed with a ball stud, to which the upper end of a line 80 is pivoted. Thislink 80 is pivoted at 81 to the lever 53. This connection between the link and lever is such that when the lever is depressed the link 80 will be moved downward, throwing downward the end of the lever 76 and moving the tension releasing fork or finger between the tension disks to release the tension 18. This downward movement of the lever 58 sets the parts for Zig zag stitching. When the lever 53 is moved in the opposite direction for straightaway stitching, the lever 76 will be moved or oscillated so as to restore the tension 18.

I have by this construction provided auto matic means for adjusting the tension on the needle thread, as the machine is shifted, for varying the character of stitchin In Fig. 8 of the drawings I have shown the upper feed dog 82 and an arm 83 carried by the presser foot, which is bent downwardly and forwardly at 84:, underneath the supporting portion of the upper feed dog. When the presser foot is raised. this arm will engage the u er feed dog and lift the same to facilitate the insertion of the material into the machine.

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

, Having thus described my invention, what I claim is;

1. A sewing machine comprising in combination stitch forming mechanism adapted to make either straightaway or zig zag stitching, and means under the control of the operator for controlling said stitch forming mechanism so that either straightaway or zig zag stitching is formed, said means including an arm connected with the stitch forming mechanism for vibrating the same laterally, an arm oscillated by the machine about the same axis as the first-named arm, and devices movable by the operator without stopping the stitching mechanism for locking said arms together.

2. A sewing machine comprising in combination stitch forming mechanism adapted to make either straightaway or zig zag stitching, and means under the control of the operator for controlling said stitch forming mechanism so that either straightaway or zig zag stitching is formed, said means including an arm connected with the stitch forming mechanism for vibrating the same laterally, an arm oscillated by the machine about the same axis as the first-named arm, and devices movable by the operator Without stopping the stitching mechanism for locking said arms together, and devices whereby said arms may be held locked together for zig zag stitching.

3. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, and devices movable by the operator without stopping the stitching mechanism for locking said arms together.

at. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, a locking lug carried by one of said arms and adapted to engage the other arm for locking said arms together, and means under the control of the operator for moving said lug to connect said arms.

A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, a locking lug carried by one of said arms and adapted to engage the other arm for locking said arms together, means under the control of the operator for moving said lug to connect said arms, and a spring for normally holding said lug out of locking engagement with its cooperating arm.

6. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, a locking lug carried by one of said arms and adapted to engage the other arm for locking said arms together, means under the control of the op erator for moving said lug to connect said arms, a spring for normally holding said lug out of locking engagement with its cooperating arm, and devices independent of the means under the control of the operator for locking said lug in engagement with the arm.

7. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, a locking lug carried by said fixed arm, and adapted to engage said loosely mounted arm on the shaft, and means under the control of the operator for moving said lug into engagement with said loosely mounted arm.

8. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar,

whereby the same may be moved laterally,

a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arnrfixed to said shaft, a locking lug carried by said fixed arm, and adapted to engage said loosely mounted arm on the shaft, means under the control of the operator for moving said lug into engagement with said loosely mounted arm, a spring for moving said lug out of engagement with said loosely mounted arm and a fixed block for engaging said lug when disengaged from the loosely mounted arm for holding said shaft from oscillation.

9. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, meansrfor oscillating said arm, an arm fixed to said shaft, a locking lug carried by said fixed arm, and adapted to engage said loosely mounted arm on the shaft, means under the control of the operator for moving said lug into engagement with said loosely mounted arm, a spring for moving said lug out of engagement with said loosely mounted arm, and a fixed block for engaging said lug when disengaged from the loosely mounted arm for holding said fixed shaft from oscillation, said fixed block having a V-shaped recess formed therein, and said lug having a V-shaped face adapted to fit within said recess.

10. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, said fixed arm having a movable head carried thereby, a lug mounted on said head, and adapted to engage a recess formed in the end of the arm loosely mounted on' said shaft, a spring for normally holding said head in position for disengaging the lug from the recess, and means under the control of the operator for moving said head on said fixed arm without stopping the stitching mechanism for causing said lug to engage said recess.

11. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, said fixed arm having a movable head carried thereby, a lug mounted on said head, and adapted to engage a recess formed in the end of the arm loosely mounted on said shaft, a spring for normally holding said head in position for disengaging the lug from the recess, and means under the control of the operator for moving said head on said fixed arm without stopping the stitching mechanism for causing said lug to engage said recess, said last named means including a supporting plate adapted to engage said head, a lever for raising said plate and a spring for lowering said lever. V V

12. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loesely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, said fixed arm having a movable head carried thereby, a lug mounted on said head, and adapted to engage a recess formed in the end of the arm loosely mounted on said shaft, a spring for normally holding said head in position for disengaging the lug'from therecess, and means under the control of the operator for moving said head on said fixed arm without stopping the stitching mechanism for. cause ing said lug to engage said recess, said last named means including a tmpportin plate adapted to engage said head, a lever for raising said plate, a spring for lowering said lever, and a stop adapted to lock said lever in raised position for causing the stitch forming mechanism to produce Zig zag stitching.

13. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, a head having a stem mounted in the end of said fixed arm and adapted to move longitudinally thereof, a spring for normally pressing said head outward on said arm, a roller carried by said head, a lug carried by said head, and adapted to engage a recess in the end of the arm loosely mounted on the shaft, a plate on which said roller rests, and means under the control of the operator to raise said plate to cause said lug to engage said recess.

' let. A sewing machine comprising in com bination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, a head having a stem mounted in the end of said fixed arm and adapted to move longitudinally thereof, a spring for normally pressing said head outward on said arm, a roller carried by said head, a lug carried by said head, and adapted to engage a recess in the end of the arm loosely mounted on the shaft, a plate on which said roller rests, and means under the control of the operator to raise said plate to cause said lug to engage said recess, a fixed stop block adapted to engage said lug when'disengaged from the recess for holding said shaft from movement, and a needle positioned for straight-away stitchmg.

15. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted. on said shaft, means for oscillating said arm, an arm fixed to said shaft, a head having a stem mounted in the end of said fixed arm and adapted to move longitudinally thereof, a spring for normally p fessing said head outward on said arm, a roller carried by said head, a lag carried by said head, and adapted to engage a recess in the end of the arm loosely mounted on the shaft, a plate on which said roller rests, and means under the control of the operator to raise said plate to cause said lug to engage said recess, a fixed stop block adapted to engage said lug when disengaged from the recess for holding said shaft from movement, and a needle positioned for straight-away stitching, said block having a if-shaped recess in the upper face, and said lug having a i!- shaped lower face adapted to set within and fit said V-shaped recess.

16. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, a head carried by said fixed arm and movable longitudinally thereof, a lug carried by said head and adapted to engage a recess in the lower end of said arm loosely mounted on the shaft, a roller carried by said head, a supporting bracket, a plate mounted on said supporting bracket, on which said roller rests, a lever mounted on said bracket for raising said plate to cause said lug to engage the recess in the arm.

17. A sewing machine comprising in combination. stitch forming mechanism having a needle bar, a support for the needle bar, whereby the same may be moved laterally, a shaft connected to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, a head carried by said fixed arm and movable longitudinally thereof, a lug carried by said head and adapted to engage a recess in the lower end of said arm loosely mounted on the shaft, a roller carried by said head, a supporting bracket, a plate mounted on said supporting bracket, on which said roller rests, a lever mounted on said bracket for raising said plate to cause said lug to engage the recess in the arm, a spring for normally depressing said plate, and a spring for normally moving said lug out of the recess When the plate is depressed.

18. A sewing machine comprising in combination stitch forming mechanism having a needle bar, a support for the needlebar, whereby the same may be moved laterally, a shaft connected. to said support for oscillating the same, an arm loosely mounted on said shaft, means for oscillating said arm, an arm fixed to said shaft, a head carried by said fixed arm and movable longitudinally thereof, a lug carried by said head and adapted to engage a recess in the lower end of said arm loosely mounted on the shaft, a roller carried by said head, a supporting bracket, a plate mounted on said support-- ing bracket, on which said roller rests, a lever mounted on said bracket for raising said plate to cause said lug to engage the re cess in the arm, a spring for normally depressing said plate, and a spring for nor mally moving said lug out of the recess when the plate is depressed, a fixed block carried by said bracket and having a recess adapted to receive said lug for holding said fixed arm from movement.

19. A sewing machine comprising in combination an overhanging arm, a swinging gate pivoted to said overhanging arm, a needle bar mounted in said swinging gate and carrying a needle, a shaft carried by said overhanging arm and having at one end a depending arm connected to said swinging gate for oscillating the same, an arm fixed to said shaft adjacent the other end thereof, an arm loose on said shaft adjacent said fixed arm, a movable head carried by the fixed arm, a lug mounted on said head and adapted to engage said arm loosely mounted on the shaft, means for oscillating said loosely mounted arm from the driving mechanism of the machine, and means under the control of the operator for mov ing said lug so as to lock said arms to gether.

20. A sewing machine comprising in combination an overhanging arm, a swinging gate pivoted to said overhanging arm, a needle bar mounted in said swinging gate and carrying a needle, a shaft carried by said overhanging arm and having at one end a depending arm connected to said swinging gate for oscillating the same, an arm fixed to said shaft adjacent the other end thereof, an arm loose on said shaft adjacent said fixed arm, a movable head carried by the fixed arm, a lug mounted on said head and adapted to engage said arm loosely mounted on the shaft, means for oscillating said loosely mounted arm from the driving mechanism of the machine, and means under the control of the operator for moving said lug so as to lock said arms together, a spring for normally holding the means under the control of the operator in position for releasing the lug from the arm.

21. A sewing machine comprising in combination an overhanging arm, a swinging gate pivoted to said overhanging arm, a needle bar mounted in said swinging gate and carrying a needle, a shaft carried by said overhanging arm and having at one end a depending arm connected to said swinging gate for oscillating the same, an arm fixed to said shaft adjacent the other end thereof, an arm loose on said shaft adjacent said fixed arm, a movable head car ried by the fixed arm, a lug mounted on said head and adapted to engage said arm loosely mounted on the shaft, means for oscillating said loosely mounted arm from the driving mechanism of the machine, and means under the control of the operator for moving said lug so as to lock said arms together, a spring for normally holding the means under the control of the operator in position for releasing the lug from the arm, and devices for locking the controlling means so as to hold said lug in engagement with the arm, whereby Zig zag stitching is produced.

22. A sewing machine comprising in combination an overhanging arm,aswinging gate pivoted to said overhanging arm, a needle bar mounted in said swinging gate and carrying a needle, a shaft carried by said overhanging arm and having at one end a de pending arm connected to said swinging gate for oscillating the same, an arm fixed to said shaft adjacent the other end thereof, an arm loose on said shaft adjacent said fixed arm, a movable head carried by the fixed arm, a lug mounted on said head and adapted to engage said arm loosely mounted on the shaft, means for oscillating said loosely mounted arm from the driving mechanism of the machine, and means under the control of the operator for moving said lug so as to lock said arms together, a spring for nor mally holding the means under the control of the operator in position for releasing the lug from the arm, and devices for locking the controlling means so as to hold said lug in engagement with the arm, whereby zig zag stitching is produced, a spring for moving said head for disengaging said lug from said arm, a roller carried by said head, a plate on which said roller rests, and means for raising said plate for causing said lug to engage said arm.

23. A sewing machine comprising in combination an overhanging arm, a. swinging gate pivoted to said overhanging arm, a neeclle bar mounted in said swinging gate and carrying a" needle, a shaft carried by said overhanging arm and having at one end a depending arm connected to said swinging gate for oscillating the same, an arm fixed to said shaft adjacent the other end thereof, an arm loose on said shaft adjacent said fixed arm, a movable head carriedby the fixed arm, a lug mounted on said head and adapted to engage said arm loosely mounted on the shaft, means for oscillating said loosely mounted arm from the driving mechanism of the machine, and means under the control of the operator for moving said lug so as to lock said arms together, a spring for normally holding the means un: der the control of the operator in position for releasing the lug from the arm, and devices for locking the controlling means so as to hold said lug in engagement with the arm, whereby zig zag stitching is produced, a spring for moving said head for disengaging said lug from said loosely mounted arm, a roller carried by said head,

a plate on which said roller rests, means for raising said plate for causing said lug to engage said arm, and devices for engaging said lug when released from said loosely mounted arm for holding the needle bar from lateral vibration.

24. A sewing machine comprising in combination, stitch-forming mechanism having a needle, means for vibrating said needle laterally and for rendering said vibrations ineffective including a vibrating arm, a lug adapted to engage a recess in said arm, and a spring pressed block cooperating with said lug to force the same into the recess when said parts are moved into position for zig zag stitching.

25. A sewing machine comprising in combination, stitch-forming mechanism having a needle, means for vibrating said needle laterally including a lug, a spring pressed member carrying said lug, and a yielding block for limiting the downward movement of said spring pressed member and lug.

26. A sewing machine comprising in combination, stitch-forming mechanism having a needle, means for vibrating saial needle laterally including a lug, a spring pressed member carrying said lug, a yielding block for limiting the downward movement of said spring pressed member and lug, and means for raising said spring pressed member including a supporting plate, a lever for raising said plate, and a roller carried by said spring pressed member and bearing on said plate. r

27. A sewing machine comprising in combination, stitch-forming mechanism having a needle, means for vibrating said needle laterally including a vibrating arm having a recess, a lug adapted to engage said recess, means for moving said lug out of said recess for rendering the needle-vibrating mechanism inefiective, means for moving the lug into the recess, and devices for preventing the shiftin of the lug into the recess except when the needle is above the material.

28. A sewing machine comprising in combinati on, stitch-forming mechanism having a needle, means for vibrating said needle laterally and for suspending the vibrations of the needle including a lever under the control of the operator, a spring pressed member under the control of the lever, a continuously vibrating member, devices for connecting said spring pressed member to said vibrating member, and a second spring pressed member adapted to engage said devices when disconnected from said vibrating member.

29. A sewing machine comprising in combination, stitch-forming mechanism having a needle, means for vibrating said needle laterally including a rock shaft, means for oscillating said rock shaft, a fixed arm carried by said rock shaft, a loosely journaled arm on said rock shaft, means for vibrating said loosely journaled arm, and devices controlled by the operator, whereby said arms may be locked together and may be automatically unlocked when released by the operator.

30. A sewing machine comprising in combination, stitch-forming mechanism having a needle, means for vibrating said needle laterally for forming zig zag stitching including a rock shaft, a constantly vibrating member journaled on the rock shaft, an arm fixed to the rock shaft, said arm carrying a locking device under the control of the operator,

whereby said fixed arm may be locked to said vibrating member.

31. A sewing machine comprising in combination, stitch-forming mechanism having a needle, means for vibrating said needle laterally for forming zig zag stitching including a rock shaft, a constantly vibrating member journaled on the rock shaft, an arm fixed to the rock shaft, said arm carrying a locking device under th control of the operator, whereby said fixed arm may be locked to said vibrating member, and means for engaging said locking device when disengaged from the vibrating member for holding the needle from vibration during straight-away stitching.

32. A sewing machine comprising in combination, stitch-forming mechanism having a needle, means'for vibrating said needle for forming Zlg zag stitching and for rendering said vibrations ineffective for straight-away stitching including a constantly vibrating member, a locking device, means for causing said locking device to engage and disengage said vibrating member, and means for holding said locking device when out of engage ment with said vibrating member, whereby said locking device will engage said vibrating member at a single point only in its travel and automatically reposition the locking device when released from said vibrating member.

In testimony whereof, I affix my signature, in the presenc of two Witnesses.

DUDLEY S. SEYMOUR.

Witnesses 1 C. MCNEIL, A. B. CLOTHIER.

Gopiea of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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