US1080343A - Sewing-machine. - Google Patents

Description

GLS. HILL.

SEWING MACHINE.

APPLICATION FILED APR.1, 1911.

1,080,343. Patented De.2,1913.

2 SHEETS-SHEET 1.

Fig-L I 9 zd W/T/VESSES.

G. S. HILL.

SEWING MACHINE.

APPLIUATION FILED.APR.1,1911.

1,080,343, Patented Dec. 2, 1913.

2 SHEETSSHEBT 2.

7 1 b l I r l l l 1 l I I 1 I 1 l UNITED sTArns Ragnar OFFICE.

GEORGE S. HILL, OF S TR AFFORD. NEW HAMPSHIRE, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF EATERSON, NEW JERSEY, A CORPORATION 01:

NEW JERSEY.

SEWING-MACHINE.

Specification of Letters Patent.

Patented Dec. 2, 1913.

Application filed April 1, 1911. Serial No. 618,348.

,tion, like reference characters on the drawings indicating like parts in the several figures.

' The invention relates to'new and useful improvements in sewingmachines, and more especially to the mechanism for vibrating a needle laterally relative to its line of reciprocation.

An ob'ect of the invention is to provide a.

needle-vibrating mechanism wherein the vibrating parts are light and few in number, and wherein the movements imparted to the needle are positive in character, so as to avoid lost motion and excessivewear of the parts.

A further object of the invention is to provide a needle-vibrating mechanism wherein the needle bar is reciprocated in a fixed line and the needle is vibrated laterally relative to the line of reciprocation of the needle.

A further object of the invention is to pro vide means whereby a needle carrier is vibrated relative to a needle bar, and the carrier moved longitudinally of the needle bar during its vibrations.

These and other objects will in part be obvious, and will in part be hereinafter more fully described.

In thedrawings which show by way of illustration one embodiment of the invention,-Figure I" is a vertical. sectional view substantially on the line of feed, showing a sewing machine with my improvements applied thereto; Fig. 2 is a detail perspco tive view showing the manner of operating the feed dog from the bender lever; also showing the presser foot mechanism and the relative position of the looper; Fig. 3 is a detail perspective view showing the needlevib 'ating mechanism, take up and the looper operating mechanism; Fig. 4 is a horizontal sectional view through the casing for the bender lever, showing the work support in plan and with parts broken away and removed to show the operatin mechanism beneath the same; Fig. 5 is-a ditnil perspective view of the thg -umsgatherer with parts broken away to show the manner of attaching the same to the work support; Fig. 6 is a detail view partly in section, showing the manner of bending the material into the path of the needle; and Fig. 7 is a detail showing the manner of covering the thrum ends and stay cords by my improved stitching mechanism;- 3

In carrying out the invention, the stitchforming mechanism consists of a needle which is so mounted on a needle bar that the needle may be vibrated laterally and reciprocated back and forth in a plane substantially parallel to the work support, so that the needle may be caused to enter the mate rial at one point and emerge therefrom on the same side of the material, so as to make a blind stitch, and then be vibrated laterally and again caused to enter and en'icrge from the material to make a second blind stitch and form cross connecting threads hetwen the blind stitches, which may be used to cover thrum ends in finishing a buttonhole strip, or which may be used for other purposes. The needle is reciprocatcd from a driving shaft beneath the work support, and is also vibrated laterally by a worm gear connection from the driving shaft. The material is bent into the path of the needle by the bender, and the stitches are locked The material is fed so as to space the stitchesby a feeding mechanism located beneath the work support Referring more in detail to the drawings, the sewing machine as herein illuslraled consists of a hollow easing having a supporh ing base 1' and a work support 3, which is ,hinged to the base at 3, so that the work support may be raised and lowered to give access to the operating parts beneath the ame. l\lounted beneath the work support is a needle 4, which is clamped in a needle carrier 5, which in turn is mounted on a needle bar 6. The needle bar (3 reciprocates in a bracket 7, which freely engages the needle bar adjacent the carrier 5 anda bracket 8, which engages the outer end. of the needle bar. These brackets are preferably secured to the under face of the work support 3, so that when forming laterally spaced stitches:

is connected to a collar 10 at one end and to a crank 11 at the other end, which crank is carried on the forward end of a driving shaft 12. The driving shaft 12 is also mounted in supportingbrackets carried on the under face'of the work'support and may be driven in any'desired way. The needle bar is preferably constructed so as to reciprocate in its bearings without turning therein. The needle carrier 5 is interiorly thread-- ed and engages a' correspondingthread 13 indicated in dottedlinesin Figs gl and 3. The needle carrier 5 is, sWung[-. ..about the axis of the needle bar, so as to ,vihrate the needle laterally and position the aims for- As hereturn's relative in shown the needle -carr1er to theneedle bar on the threaded connection 13;

As a means for vibrating the needle car-. rier laterally, a bar 14 is rigidly connected to the carrier at. one end, and at its other 1 end is connected rigidly to an arm 15, which is connected to a collar 16, which in turn is loosely mounted on the needle bar. A link 17 extends through a slotted bearing v18 in a bracketon the under side of the work "support, and is free to slide longitudinally in said, slotted bearing. Said link 17 is formed'with acollar 19, which freely engagesthe bar, 14:, so that the bar 1 1 may slide longitudinally in said collar. The

"other end of the link 17 is connected to an eccentric member 20, carried by the outer end of a shaft 21, mounted in any desired way underneath the work support. The shaft 21 carries a worm gear 22, whichis arranged with its axis at right angles to the axis of the driving shaft 12. A worm gear 23 is mounted on the driving shaft 12, and meshes with. the worm gear 22. These gears 22 and 23 are so proportioned that two revolutions of the gear 23 are required to give one rcv'oluth'ui of the gear'22. As the driving shaft 12.rotates, the link.17 will be moved longitudinally, andv through its conncction with the bar 14 will vibrate the ylongitudinal movcment'of the carrier on the needle bar is comparatively slight.

It will be readily seenthat the carrier may be quickly turned on the end of the bar through its threaded connection and in its various angular positions relative to the nee gitudinal movement on the bar, except when the carrier 1s turned relative to the necdle bar.

Cooperatingwith the" eedle is a looper 2a, which is mounted to oscillate about the axis of a shaft 25. The shaft at its lower end carries a crank arm 26, which cooperates with a forked lever 27, which in turn is vibrated by a link 28 connected with a crank pin on the forward end'of the driving shaft 12. This looper is preferably of the shuttle type, and oscillates about aliXed center. It will readily beseen that when a left hand thread is formed between the needle bar and the carrier 5 and when the carrier 5 is oscillated, the point of the needle will be moved toward and from the path of movement of the beak of the looper. Therefore, this threadedconnection between the needle carrier and the needle bar would have aslight tendency to compensate for the different relative positions of the needle eye dle bar will be firmly held against any lon- I and the beak of the shuttle, when the needle is in its two lateral positions. ment of the needle relative to'the path of This move:

movement of the beak of the looper is, however, unnecessary where the range of lateral vibration of the needle is slight, as in. the present machine, and the main purpose, therefore, of .this threaded connection between the needle carrier and the needle bar is to take up all lost motion. If the thread forming the connection between these parts is sufliciently fine, the needle carrier may in fact be moved in a direction so asto tend to throw the needle and the looper out of proper cooperation, and in the present machine the .actual cooperation between the needle and looper will not be disturbed. It will, therefore, be understood that the thread connecting the needle carrier, and

needle barmay be eithera right hand or a left hand thread, and that the essentialfeature is vto provide an easy manner of assembling these parts, and to avoid all possible chance for lost, motion inthisconnection.

As a means for feeding the material, I have provided a feed dog 29 which is carried by a feed barBO, pivoted to a feed rocker81. The feed rocker is moved back and forth through a connection with an eccentric on the drivihg shaft 12, as shown in dotted lines in Fig. 4:. y

.As a means for bending the material into the path of the needle, Ihave provided the work support with 'a throat plate having a groove 32 therein, anda bender 33operates to bend-the material into the grooye and into the path of the needle. This bender is -carried by a lever 34, which is pivoted to a casing carried bythework support, and extends beneath the work support Where. the

sameis operated by-an eccentric 35.

As a means for raising and lowering the feed dog, so that the same will be raised when the bender is raised, and lowered when the bender is lowered, I have formed the bender lever with an arm 36, which projects laterally along the side of the feed bar 30, and carries a pin 37, which works in a slot 38 in the feed bar. This allows the feed bar to be moved longitudinally, and as the bender lever is moved up and down the feed dog will also be moved u and down therewith. Cooperating with the feed dog is a presser foot 39, carried by a lever pivoted at .0, and which presser foot is raised and lowered through a rod 41, extending beneath the work support.

The needle thread is led through a tension 42. As a means for releasing the ten sion when the presser foot is raised, I have formed the presser lever with a releasing finger 13, which has its outer end located adjacent the tension 42, and when the lever is raised, said finger will he forced between the tension disk to release all tension on the thread, so that the material may be readily removed from the machine. The thread from the tension passes through a take up M, which may be operated in any desired way from the driving shaft 12. 1

My machine is especially adapted for finishing buttonhole strips, such as shown in Fig. '7. The thrum ends and stay cord running from one buttonhole'to another are covered by presenting the material to the needle so that a stitch is formed first on one side of the thrum ends and then on the other, and the cross threads running from one stitch to another will cover said thrum ends.

In order to gather in the thrum ends and stay cord so that the needle will with -certainty enter the material entirely at one side thereof, and then entirely at the other side thereof, I have provided a thrum gatherer 45, (see Figs. 1 and This thrum gatherer 45 is formed with upwardly bent ends 46, which are spaced so as to form a delivering notch 47. The upwardly bent ends 46 are so disposed as to gather in the thrums which pass out tllLOllgll the notch 47. This thrum gatherer 4:5 is secured to a disk 48 by suitable screws, and the disk 48 is mounted so as to turn on the worksupport, so that the thrum gathered may he swung from a position directly in front of the needle, or in line with the feed to one side, or in a position at an angle to, the line of feed. The loopcr is located directly in front of the needle, and is, therefore, positioned directly underneath the thrum gatherer. I have cut away the work su port at 49, (see Fig. 2), directly above the looper, and the thrum gathcrcr when in normal position covers said opening 49. -When it is desired to obtain access to. the looper for re-threading,

the thrum gather-er may be quickly turned to one side, which will expose the looper. After the looper has been replaced, the thrum gatherer may be moved to normal position, and thus cover the looper. It w1ll, therefore, be seen that by this construction, the thrum gatherer serves not only-the purpose of covering the thrums and positioning the same for the stitching mechanism, but also has the covered plate for the open- 7 ing in the work support which exposes the looper.

As a means for holding the thrum gatherer in normal position, I have provided a ball 50, which is located in a socket g in the support underneath the disk 48 carrying the thrum gatherer, and is spring pressed outwardly toward said disk. This ball is adapted to engage a depression in the under face of the disk on which the thrum gather-er is supported, and will hold the same in normal position.

As a means for giving ready access to the needle for threading, and also to the take up, I have formed the work support with a 9 slot 51, which extends over the needle bar and its operating mechanism. Said slot is preferably covered by a cover plate, indicated as broken away in dotted lines at 52. The bracket 7 which supports the forward end of the needle bar, is preferably a V- shaped bracket, and spans the slot 51 in the work support, which gives a proper space for the movement of the carrier and the parts for vibrating the same. The bracket 8 is attached at one side of the slot 51, and projects downwardly and laterally, so as to properly support the outer end of the needle bar.

The thrums which are to be covered by the stitch-forming mechanism are on the under side of the material, and in order to aid the operator in properly guiding the material to direct the thrums to the thrum gatherer and the stitch-forming mechanism, I have provided a guide 53, which is preferably secured to thepresser foot and projects forwardly thereof. The forward end of the guide is so positioned relative to the stitching point that if the ends of the buttonhole are led directly underneath the same, then the thrums will be properly gathered and covered by the stitches.

It is obvious that minor changes in the details of construction may be made, or the 1'20 arraugcn'ient of parts may be varied, without in any way departing from the spirit of my invention, as set forth in the appended claims.

While I have designed my' machine with a special view that the same shall be used for finishing buttonliole strips, it is obvious that the stitch-forming mechanism. herein shown and claimed any he used in other types of machines, and for other purposes. we

' necting 'bination, a work support, a

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

1. A sewing machine including in combinati on, a work support, a needle bar located and operating at one side of said work support and in substantially the same path, a needle carried thereby, a driving shaft located beneath the work support, means for reciprocatin the needle bar from said shaft, and means for vibrating said needle laterally, including stantially at right angles to the first shaft, means for driving said second shaft from the first shaft, an eceentric nember carried by said second shaft, and dei ices for consaid eccentric member to said. needle, whereby .said needle is vibrated about the axis of the needle bar.

2. it sewing machine including in combination, a work support, a needle bar located and operating beneath said work sup port, a needle carried thereby, a driving shaft located beneath said work support, means for reciprocating said needle bar from said shaft, and means for vibrating said needle laterally including a worm gear carried by said shaft, a second worm gear cooperating with said first named gear, and having its axis located in a plane at right angles to the driving shaft, an eccentric member carried by said second gear and. devices for connecting said eccentric memher to said needle.

3. i-i'sewing machine including in combination, a base, a work support spaced from said base, a driving shaft supported by'and beneath the work support, a needle bar mounted in a bearing carried by said Work support, means for reciprocating a needle bar from said driving shaft, a needle carried by said needle bar, and means for vibrating said needle laterally, including a worm gear carried by said driving shaft-,a second worm gear'cooperating therewith and having its axis located in a plane at right angles to the driving shaft, an eccentric member carried by said. second gear, and a link for connecting said eccentric member to said needle.

4. A sewing machine including in comneedle bar mounted beneath the worksupport to r ciprocate in a direction parallel therewith, means for reciprocating "aid needle bar back and forth in substantially the same path, a carrier mounted on said needle bar, a needle mounted in said carrier, and means for vi bratiugthe carrier about the axis of the needle bar.

A sewing machine including in combination, a work support, a needle bar, means for sup iorting said needle bar whereby the same reciprocates in a plane parallel with the work support, means for reciprocating a second shaft located sub said needle bar, a carrier supported by said needle bar "and projecting toward said work support, a needle mounted on said carrier, and means for vibrating said. carrier about the axis of the needle bar.

6. A sewing machi 1e including in combination, a work support, a needle bar, means for supporting said needle bar whereby -the same reciprocates back and forth in the same path beneath the work support and in a plane parallel with the work support, means for reciprocating said needle bar, carrier supported by said needle bar and projecting toward said work support, a

needle mounted on said carrier, and means for vibrating said carrier about the axis of the needle bar.

7. A sewing machine including in combination, a work support, brackets carried by said work support and projecting downwardly therefrom, a needle bar mounted to reciprocate back and forth in substanti illy the same path in said brackets, means for reciprocating said needle bar, a carrier supported by said needle bar and projecting.

toward said work supp.ort, a needle mounted in said carrier, and means for vibrating said carrier about the axis of said needle bar.

8. A sewing machine including in""combination, a work support, brackets carried by said work support and projecting downwardly therefrom, a needle bar mounted to reciprocate in said brackets, a needle carrier supported by said needle bar and movable about the axis of said needle bar, a needle jmounted in said needle carrier, a-bar projecting from said carrier for moving said carrier about said axis, a link connected to said bar, and means for vibrating said link.

9. A sewing machine including in combination, a work support, a needle bar, means for reciprocating said needle bar, a needle carrier supported by said bar, a needle mounted in said carrier, a bar fixed to said carrier and projecting therefrom, means for oscillating the carrier about the axis of the needle bar, said means including alink having a sliding connection with said bar, means for moving said link cndwise for oscillating the carrier, and deyices' for preventing lateral moyement of said link with the bar fixed tot/the carrier as the needle bar devices for preventing lateral movement of said link with the bar fixed to the carrier as the needle bar reciprocates.

11. A sewing machine including in combination, a needle bar, spaced brackets in which said needle bar reciprocates, means for reciprocating said needle bar, a carrier mounted on the end of said needle bar and projecting laterally therefrom, an arm on the needle bar between the brackets and projecting laterally therefrom, a bar connecting the carrier with said arm, said bar being substantially parallel with the needle bar, a needle mounted in said carrier, and means for vibrating the needle laterally including a link having a sliding connection with the bar between the arm and carrier.

12. A sewing machine including in combination, a work support, a needle bar mounted beneath the work support and reciprocating in substantially the salne path and parallel thereto, a needle carrier supported by said needle bar, a needle mounted in said carrier, and means for oscillating the carrier about the axis of the needle bar, including a link connected to the carrier adjacent its outer end.

13. A sewing machine including in combination, a Work support having a slot formed therein, a coverplate for said slot, a V- shaped bracket spanning said slot and connected to the work support, a secondbracket connected to the work support, a needle bar mounted to reciprocate in said brackets, a needle carrier supported by said needle bar and projecting toward said work support, a needle mounted in said carrier, means for reciprocating the needle bar, and means for vibrating the carrier about the axis of the needle bar.

ll. A sewing machine including in combination. a work support, a driving shaft beneath the work support, a needle bar mount ed beneath the Work support to reciprocate in a direction parallel to said support, means for reciprocating said needle bar backand forth in the same path from said driving shaft, :1 carrier mounted on the needle bar and projecting toward the work support, a needle mounted in said carrier, means connected with said carrier for vibrating said needle laterally, a looper movable about a fixed vertical axis, and means connected with said driving shaft for oscillating said loopcr about its axis.

15. A sewing machlne including 1n comb1= nation, a work support; a driving shaft beneath the work-support, a needle bar mounted beneath the work support and reciprocating in a direction parallel thereto, a carrier mounted onsaid needle bar, a needle mounted in said carrier, devices operated from the driving shaft for vibrating said carrier relative tosaid needle bar for moving said needie laterally, a looper movable about a fixed ciprocating said needle bar, means for vibrating the needle laterally, a bender for bending the material into the path of the needle, a looper cooperating with the needle, said work support having an opening therein directly above said looper, and a thruni gathering device connected to said work support and projecting over said opening, and means for supporting said thrum gath; ering device whereby the same may be moved laterally to give access to the looper.

' 17. A sewing machine including in combination, a work support, a needle located beneath the work support, and movable in a plane parallel therewith, a bender for bending the material into the path of the needle, a lever supporting said bender, means for oscillating said lever, a feeding mechanism for feeding the material including a feed dog, a feed bar carrying the same, and an arm carried by the lever for ope 'ating the bender, said arm having a sliding connection with the feed bar, whereby the oscillating movements of the bender lever will raise and lower the feed dog and allowthe feed dog to move back and forth.

18. A sewing machine including in combi nation, a work support, a needle located beneath the work support and moving in a direction substantially parallel thereto, means for reciprocating the needle, and means for vibrating the needle laterally, a bender for bending the material into the path of the needle, a' feeding mechanism for feeding the material, a presser foot, a thrum gather-er carried by the work support for gathering. the thrums on the under side of the material, and a guiding finger carried by the presser foot and extending to a point in front thereof for indicating the position of the thrum gatherer and stitching point underneath the material.

19. A sewing machine including in combination, a needle bar, means for supporting said needle bar, whereby the same reciprocates back and forth in the same path, a carrier mounted on said needle bar and projecting laterally therefrom, a needlemountedin said carrier, means for vibratin said needle carrier relative tothe neede bar, and means for moving said carrier longitudinally of the needle bar during its lateral v1- bration. A

20. A sewing machine including in combination, a needle bar, means for supporting said needle bar, whereby the samereciprocates back and forth in the same path, a carrier mounted on said needle bar and projecting laterally therefrom, a needle mounted in saidcarrier, means for vibrating said needle carrier relative to the needle bar, sald carrier having a screw thread connectionnation, a needle bar, means for supporting" said needle bar, whereby the same is reciprocated back and forth in the same path,

' means for reciprocating said needle bar, said needle bar having a screw thread formed at one end thereof, a carrier. having acomplemental thread mounted on and engaging the screw thread of the needle bar, a needle mounted in said carrier, and means for vi-' hrating. the carrier laterally relative to the 1 link longitudinally in said bracket.

needle bar.

v 22. A sewing machine including in combination, a needle-bar, means for supporting said needle bar, wherebythe same reciprocates back and forth in the same path, a carrier mounted on the needle bar and project.

ing laterally therefrom, said carrier having 7 a screw thread connection with the needle bar, an arm freely mounted 'on the ,needle bar, a bar connecting-said carrier and said arm, a link having a collar at its outer end freely'slidin'g on said bar, and means for vibrating said link.

23., A --sewing machine including in com bination, a needle bar, means for supporting said needle bar, whereby the same reciprocates hack and forth in the same path, a carrier mounted on theneedle bar and projecting laterally therefrom, said carrier having a screw thread comiection with theneedie bar, an arm :freely mounted on the needle bar, a bar connecting said carrier and said-arm, a linkfhaving a collar'at its outer I end freely sliding on said bar, a guidingbracket for preventing said link 'fromfmoving laterally, and means for moving said In testimony whereof I have o signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE. S, HILL,

'Witnesses:

EUGENE J, BAY, JOHN BUcKnE.

Eagles of this patent may be obtained for five cents each, by addressing the demmissfion'enef Eatenni, Washington, D. G.

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