US2662496A - Thread handling mechanism - Google Patents
Thread handling mechanism Download PDFInfo
- Publication number
- US2662496A US2662496A US262518A US26251851A US2662496A US 2662496 A US2662496 A US 2662496A US 262518 A US262518 A US 262518A US 26251851 A US26251851 A US 26251851A US 2662496 A US2662496 A US 2662496A
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- US
- United States
- Prior art keywords
- thread
- support
- work
- trap
- needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
- D05B1/02—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making single-thread seams
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B85/00—Needles
- D05B85/003—Needles with two tips and an eye in the middle
Definitions
- This invention relates to sewing machines, and more particularly to sewing machines capable of making special types of stitches either for decorative or utilitarian purposes, especially the type in which a double pointed needle, provided with a thread having a loose and a fixed end, is projected back and forth through the work fed either manually or automatically over a Work supporting table into the range of action of the needle.
- This invention consists further in improvements in sewing machines of the type illustrated in Johnson Patents 2,368,066; 2,386,800 and 2,389,- 151, and particularly to improvements in mechanisms for decorating coats of all types, mens and womens suits and other garments where y this type of decoration is desired.
- This application is a division of applicants copending application, Serial Number 20,198, filed April l0, 1948, for Special Stitch Sewing Machine, now Patent 2,604,863, granted July 29, 1952.
- the present invention consists of novel mechanism for handling the thread and preventing it from being spitted or broken by the needle, or
- the invention is characterized by the provision of an improved thread trap and a thread support which are mounted beneath the Work support table in relatively close proximity to the needle, and means for displacing of thread out of the path of the needle into a thread trap and onto the thread support, so that due to the operation of the thread puller which pulls the loose end of the thread through the work, the danger of breakage of thread is greatly minimized and substantially eliminated.
- Fig. 1 is an end elevation of the novel thread guide and trap mechanism
- Fig. 2 is an isometric view showing the lower needle bar and thread guiding mechanism in action
- Fig. 3 is a side elevation of the mechanism constituting the invention.
- the mechanism constituting the present invention is adapted primarily for use in the machine shown in the above referred to Johnson patents, although it may have use in other sewing machines capable of utilizing structure made in accordance with the invention.
- it is shown in conjunction with a machine for making angle stitches, as described hereinafter.
- Figure 3 it will be seen that there has been provided upper and lower needle bars 98,
- the eye of the needle is threaded with a thread which after the rst stitch is made, has a fixed and a loose end.
- the mechanism for operating the needle bars, thread puller and other thread handling means in general can be of the same type as that descibed in the above referred to Johnson patents.
- double pointed needle N is grasped alternately by chucks
- 00 are mounted in brackets 99 connected to cam actuated levers (not shown) which reciprocate them in proper timed relation with the operation of the stitch forming mechanism 50 and other moving parts of the machine in order to form the desired types of stitches.
- Johnson Patent 2,368,066 shows in detail suitable mechanism for operating the needle bars and coacting means for pulling the loose end of the thread through the Work.
- 21 In order to advance work (not shown) over work supporting table 4, and position it properly thereon with respect to needle N, a presser foot
- This foot carries a toe
- is limited by a stop IBI mounted on foot
- is provided with two elongated portions
- plate 52 The construction and operation of plate 52 are fully shown and described in said copending application, and therefore further detailed showing and description, except what is necessary to make the operation ofqthe mechanism oonstituting the present 'giiventin rcl'an are Lor'nt'td 'in "the ref'tofbrevity.
- 21 cooperates with an upper feeding foot l2
- Plate 52 is provided withv 'a cutout ⁇ Snot'y shown) which allows upper wt f germangifoot 12
- Prefeamytiiewurk is positioned e substantially 4 x as the result of needle N moving with the thread through the work and also supports slack thread clear of the path of movement of needle N.
- Plate section 288 has a cut'outportion 289 which 5 'allows'loiveririedle brtl toE 'rr'ove5u ⁇ p ⁇ fand down "'beneath'ta'ble 4. It ishal'so'p-rovided with an upstandng projection 299 which tends to hold lint *on plate section 28B, and a tapered thread :292::2. l During the operation of thread puller 203 faboutdrum '9 ⁇ shdwn in dotted lines in Figure 3"n ⁇ 'p1 ⁇ 1 1'1ig't ⁇ l1fiefldose end L of thread T through lworkunt shown), the thread is initially disposedhas. at 1in Eigure 2.
- said lower needle bar may move, means mounting said support and trap above said drum and adjacent said lower needle bar, a tapered guiding surface formed on said support for guiding said loose end of thread into said support, and means for moving said thread upwardly along said guiding surface onto said support.
- a thread support means mounting said support above said drum and adjacent said lower needle bar, a tapered guiding surface formed on said support, means for guiding said loose end of said thread onto said support, a thread trap mounted adjacent to and coacting with said thread support, a reciprocatory thread engaging nger, a thread hook on said finger, and means for moving said finger in timed relation with said movement of said needle bars to engage said hook with a portion of said loose end of said thread to displace it laterally along said guiding surface and dispose it in said thread trap and on said support.
- a sewing machine of the type having a work support table, an upper needle bar and a lower needle bar adapted to pass a double pointed needle and a thread back and forth through work to be stitched, a thread receiving drum, and a thread puller for pulling the loose end of said thread throughsaid work'and disposing it upon said drumya thread support
- means mounting Said support above said drum and adjacent said lower needle bar a tapered guiding surface formed on said support for guiding said loose end of thread onto said support, a thread trap coacting with said guiding surface, said thread trap com prising spaced guide and thread positioning members positioned proximate said thread support and adjacent the path of movement of said thread puller, an oscillatory thread engaging finger, and means for moving said finger into engagement with a portion of said thread to shift it laterally to dispose said thread on Vsaid thread support and between said thread positioning members.
- a thread support means mounting said support above said drum and adjacent said lower needle bar, a thread guide formed on said supportforguiding said loose end 0f thread into said support, a thread trap coacting with said thread guide, said thread trap comprising spaced guide and thread positioning members, means mounting said thread trap above said drum, adjacent said lower needle bar and adjacent the path of movement of said thread puller, an oscillatory thread engaging nger, and means for moving said linger into engagement with a portion of said thread to shift it laterally relative to said needle and to dispose said thread on said thread support and between said thread positioning members.
- an upper needle bar and a lower needle bar adapted to pass a double pointed substantially vertically positioned spaced upper and lower guide and thread positioning members positioned adjacent the path of movement of said thread puller, said upper member having a thread confining portion and a downwardly inclined portion having a guide nose on the free end thereof, said lower member having a substantially horizontal portion coacting with said threadfconnmg member and 'alterm'inal downwardlyincllhed' portion substa-ntiall'yf' parallel with said"- downwardiH in; clnedportions ofi said* upperA member and spaced tlierefrom',I auf-oscillatory@thvead-engag-l ingfnger.
Description
Dec. 15, 1953 M. PEDERSEN THREAD HANDLING MECHANISM Original Filed April l0,rl9 48 BY ,flTToRNEYMMQfW Patented Dec. 15, 1953 THREAD HANDLING MECHANISM Mathias Pedersen, Valley Stream, N. Y., assignor to American Machine & Foundry Company, a corporation of New Jersey pril 10, 1948, Serial No.
Original application A 20,198, now Patent No. 29, 1952. Divided and 2,604,863, dated July this application December 20, 1951, Serial No. 262,518
11 Claims.
This invention relates to sewing machines, and more particularly to sewing machines capable of making special types of stitches either for decorative or utilitarian purposes, especially the type in which a double pointed needle, provided with a thread having a loose and a fixed end, is projected back and forth through the work fed either manually or automatically over a Work supporting table into the range of action of the needle.
This invention consists further in improvements in sewing machines of the type illustrated in Johnson Patents 2,368,066; 2,386,800 and 2,389,- 151, and particularly to improvements in mechanisms for decorating coats of all types, mens and womens suits and other garments where y this type of decoration is desired. This application is a division of applicants copending application, Serial Number 20,198, filed April l0, 1948, for Special Stitch Sewing Machine, now Patent 2,604,863, granted July 29, 1952.
The present invention consists of novel mechanism for handling the thread and preventing it from being spitted or broken by the needle, or
the thread puller which pulls the loose end of l the thread through the work during the formation of each stitch.
The invention is characterized by the provision of an improved thread trap and a thread support which are mounted beneath the Work support table in relatively close proximity to the needle, and means for displacing of thread out of the path of the needle into a thread trap and onto the thread support, so that due to the operation of the thread puller which pulls the loose end of the thread through the work, the danger of breakage of thread is greatly minimized and substantially eliminated.
With these and other objects in view but not specically mentioned, the invention consists in the novel method, and certain combinations and constructions which will be hereinafter fully described, and then set forth in the claims appended.
In the accompanying drawings which form a part of this specification and in which like characters of reference indicate the same or like parts:
Fig. 1 is an end elevation of the novel thread guide and trap mechanism;
Fig. 2 is an isometric view showing the lower needle bar and thread guiding mechanism in action, and Fig. 3 is a side elevation of the mechanism constituting the invention.
Referring to the drawings, the mechanism constituting the present invention is adapted primarily for use in the machine shown in the above referred to Johnson patents, although it may have use in other sewing machines capable of utilizing structure made in accordance with the invention. In the illustrated embodiment, it is shown in conjunction with a machine for making angle stitches, as described hereinafter. In Figure 3 it will be seen that there has been provided upper and lower needle bars 98, |00 respectively, which project a double pointed needle N, having an eye located between the points, back and forth through material or work to be sewed and form therein a plurality of under and over type stitches. The eye of the needle is threaded with a thread which after the rst stitch is made, has a fixed and a loose end. During the sewing operations and after the formation of each stitch, the loose end of the thread is pulled through the work in known manner. The mechanism for operating the needle bars, thread puller and other thread handling means in general can be of the same type as that descibed in the above referred to Johnson patents.
As is well understood in the art, double pointed needle N is grasped alternately by chucks |02 in needle bars 98 and |00, and projected back and forth with the thread through the work. Needle bars 96, |00 are mounted in brackets 99 connected to cam actuated levers (not shown) which reciprocate them in proper timed relation with the operation of the stitch forming mechanism 50 and other moving parts of the machine in order to form the desired types of stitches. Reference is made to Johnson Patent 2,368,066 which shows in detail suitable mechanism for operating the needle bars and coacting means for pulling the loose end of the thread through the Work.
In order to advance work (not shown) over work supporting table 4, and position it properly thereon with respect to needle N, a presser foot |21 is provided. This foot carries a toe |3| mounted on pivot pin I 33 in foot |27. A spring urged plunger (not shown) in a vertical bore (not shown) in foot |2`i normally urges toe |3| downwardly to substantially horizontal position such as shown in Figure 3. The upward movement of toe |3| is limited by a stop IBI mounted on foot |27. Toe |3| is provided with two elongated portions |39 spaced apart a distance greater than the diameter of the needle. Elongated p0rtions |39 overlie a portion of angle work shifting and lifting plate 52 over which the work is moved.
The construction and operation of plate 52 are fully shown and described in said copending application, and therefore further detailed showing and description, except what is necessary to make the operation ofqthe mechanism oonstituting the present 'giiventin rcl'an are Lor'nt'td 'in "the interes'tofbrevity.
Presser foot |21 cooperates with an upper feeding foot l2| and a lower feed plate l23 ptvided with a conventional toothed-worlg'eeding dog l22. Plate 52 is provided withv 'a cutout` Snot'y shown) which allows upper wt f gerngifoot 12| and feeding dog |22 toaetfe gage 3i/omite be fed while located upon plate 52 andft'rveli'it juieretliroug'h. Prefeamytiiewurk is positioned e substantially 4 x as the result of needle N moving with the thread through the work and also supports slack thread clear of the path of movement of needle N. Plate section 288 has a cut'outportion 289 which 5 'allows'loiveririedle brtl toE 'rr'ove5u`p`fand down "'beneath'ta'ble 4. It ishal'so'p-rovided with an upstandng projection 299 which tends to hold lint *on plate section 28B, and a tapered thread :292::2. l During the operation of thread puller 203 faboutdrum '9`shdwn in dotted lines in Figure 3"n`'p1`1 1'1ig't`l1fiefldose end L of thread T through lworkunt shown), the thread is initially disposedhas. at 1in Eigure 2. However, when needle TISNSTIIOVed DWadly, this end of the thread is fdisplaed laterally rearward to the position indicatd at' IIlfwherein it is guided up the inclined rfacesoffguide 292 into the space between the Vari'ac'ze of guide 292 and flange 286. At the 20 Ysame time the thread is moved between rods 212 and i 219 fand, f upwa'rdly intoY thefspace between rd portiondllandl iramef2, yWl'ie'refit-i eld Von thread 'shifting i -o'r *displacing Y Y fWhile" so -he1d the loose :er/ildbf the threa'd" clgearof the pathnf'jrn'ovenehtiof vneedle QN. vv/Vhjen thread-"fpullrh't 'has com- "'pleted`i`ts `threadpulling- -operation Ainfjwhihf"'the l loose end4 `VL 'of f the threadis r-disposiad n"'tlie l L 'threadl` receiving drum 'f 209,*di'spla`cing loer 9 6 moves from4 the position shown roken ylinesjin Figujref-lvjtov that'shown' ullfliies. f rhradfospacefefi pf a "pinBBJin'flei/er i360' 'fuicrurn'ed tL 3p 2""Bn'n itns'ienefrfram iThez-te @ad bfhbhd ;A displacer' 296is pivotally connected' tol'evrSM swingably gmount'ed' on i a studffi'A subpo'rtdiby a `lbr'aelfret 'l 398 *s itablymountedpn thelfriie of the machir'1e. j-Afcam*dlloweri 31 Of'on'lver 30a funs in ai ami traklgmurum tm-i 2 m 40f`sha'ft 2G5soh'de's`igned'that displacer'52/9l' Ais"so operatednthat nger' Mit-engages the 'thread"='at t;l'1e1-pro'peri tiielin brder"*to^function "int the manner described. A
jihe" invention abve'gdscibed'nray be E varied "in construction the scope 'ofi fthe* elalijhs, forit'hef'particulardevice,l seleted toilliistr'a'te the invention, is but pne ofiianylpsible"confcretef'rhbqdiments'[ofthe fsme. 'it-is' not? 'there- -ifoieftbe restrietedfit the 'precise tiisbf the 5o-structure' stemmed-teamed.
which said lower needle bar may move, means mounting said support and trap above said drum and adjacent said lower needle bar, a tapered guiding surface formed on said support for guiding said loose end of thread into said support, and means for moving said thread upwardly along said guiding surface onto said support.
3. In a sewing machine of the type having a work support table, an upper needle bar and a lower needle bar adapted to pass a double pointed needle and a thread back and forth through work tobe stitched, a thread receiving drum and a thread puller for pulling the loose end of said thread through said work and disposing it upon said drum; a thread support, a lint trap, means mounting said support and trap above said drum and adjacent said lower needle bar, a tapered guiding surface formed on said support for guiding said loose end of thread into said support, a thread trap located adjacent to and coacting with said thread support and lint trap, a reciprocatory thread engaging finger, and means for moving said finger into engagement with a portion of said thread to shift it laterally and dispose it in said thread trap and on said support.
4. In a sewing machine of the type having a work support table, an upper needle bar and a lower needle bar adapted to pass a double pointed needle and a thread back and forth through work to be stitched, a thread receiving drum and a thread puller for pulling the loose end of said thread through said work and disposing it upon said drum; a thread support, a lint trap, means mounting said support and lint trap above said drum and adjacent said lower needle bar, a thread guide formed on said support for guiding said loose end of thread into said support, a thread trap coacting with said thread guide and lint trap, said thread trap comprising substantially vertically spaced guide and thread positioning members mounted above said drum and adjacent said support and lint trap and positioned adjacent the path of movement of said thread puller, an oscillatory thread engaging finger, and means for moving said finger into engagement with a portion of said thread to shift it laterally to dispose said thread in said thread support and between said thread positioning members.
5. In a sewing machine of the type having a work support table, an upper needle bar and a lower needle bar adapted to pass a double pointed needle and a thread back and forth through work to be stitched, a thread receiving drum, and a thread puller for pulling the loose end of said thread through said work and disposing it upon said drum; a thread support, means mounting said support above said drum and adjacent said lower needle bar, a tapered guiding surface formed on said support, means for guiding said loose end of said thread onto said support, a thread trap mounted adjacent to and coacting with said thread support, a reciprocatory thread engaging nger, a thread hook on said finger, and means for moving said finger in timed relation with said movement of said needle bars to engage said hook with a portion of said loose end of said thread to displace it laterally along said guiding surface and dispose it in said thread trap and on said support.
6. In a sewing machine of the type having a work support table, an upper needle bar and a lower needle bar adapted to pass a double pointed needle and a thread back and forth through work to be stitched, a thread receiving drum, and a thread puller for pulling the loose end of said thread throughsaid work'and disposing it upon said drumya thread support, means mounting Said support above said drum and adjacent said lower needle bar, a tapered guiding surface formed on said support for guiding said loose end of thread onto said support, a thread trap coacting with said guiding surface, said thread trap com prising spaced guide and thread positioning members positioned proximate said thread support and adjacent the path of movement of said thread puller, an oscillatory thread engaging finger, and means for moving said finger into engagement with a portion of said thread to shift it laterally to dispose said thread on Vsaid thread support and between said thread positioning members.
'7. In a sewing machine of the type having a work support table,A an upper needle bar and a lower needle bar adapted to pass a double pointed needle and a thread back and forth through work to be stitched, a thread receiving drum and a threadpuller for pulling the loose end of said thread through said work and disposing it upon said drum, a thread support, means mounting said support above said drum and adjacent said lower needle bar, a thread guide formed on said supportforguiding said loose end 0f thread into said support, a thread trap coacting with said thread guide, said thread trap comprising spaced guide and thread positioning members, means mounting said thread trap above said drum, adjacent said lower needle bar and adjacent the path of movement of said thread puller, an oscillatory thread engaging nger, and means for moving said linger into engagement with a portion of said thread to shift it laterally relative to said needle and to dispose said thread on said thread support and between said thread positioning members.
8. In a sewing machine of the type having a gaging said hook with a portion of said thread to shift it laterally along and between said members and dispose it in said thread trap.
9. In a sewing machine of the type having a Work support table, an upper needle bar and a lower needle bar adapted to pass a double pointed substantially vertically positioned spaced upper and lower guide and thread positioning members positioned adjacent the path of movement of said thread puller, said upper member having a thread confining portion and a downwardly inclined portion having a guide nose on the free end thereof, said lower member having a substantially horizontal portion coacting with said threadfconnmg member and 'alterm'inal downwardlyincllhed' portion substa-ntiall'yf' parallel with said"- downwardiH in; clnedportions ofi said* upperA member and spaced tlierefrom',I auf-oscillatory@thvead-engag-l ingfnger. and-means:-foe=movkg said innger into` engagement with la portionfot-fsaidthread toshift' ltl'aterally tcl-L displace-said thread alongand between said threadk guideand post-'- tioningfmembers andflcatigeitm2 samt-thread confining 'portland 10.' Threadfhandling #mechanlsnrflor a: sewing machine having a-needlebar compris'm'g a'substantilly horizontals thread-fl support and* lint trap, meansmountingsaidisuppmt and "cr/anadjacent lsai'dnneed-l'e "bari" aesubstntdally vertical thread: guidingsurface f6rntedon saidf-support forl .'guidingsaidy thread 'upwardlycnwfsaid r"sup'' port; awthreaditrapt'V coactingse'with' said 'thread support;- I andl'. n'nir trapg mms-i mounting said threadl trap adjacent; said threndsupportand-'lint trap,.i a-thread engagingY nngerf: andj L'means ffo'r movingesaidlnger ln=a=2closed patho travelinto' engagement Vwithfa portionlosaid thread'toshift talongfsaid guiding surface Ontdsaid'support and laterally Jto1fdispclse'ita'fin:seiid fth'ead trani" ll- Thread handling mechanism-'fdr asewg maehinehavinganeedl'e ='bar 'comprising `wallread support, means mountngfsad'support' adjacent said lower needle-bar, athre'ad guide-formed on saidsupport l for) guiding saidv threadV` into-'seid support, a'threadftrap mounted adjacent and coaeting W-ith said thread guide,y said` thread' trap comprising substantially vertically l'spaced yguide and thread-positioning members positioned-A at one-'sideef said: needle-bar, an oscillatory' thread engaging-finger; andmeans Ior'movi-ng'- said nger intoengagement wthaportioni ofsaid thread to shift' it laterallyto move 'said thread alngwandl -over said thread guide i andX ontoi said support and along and betweenfsad thread 1pc-'- stioning members into'r saidftrap.-y
Number-
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US262518A US2662496A (en) | 1948-04-10 | 1951-12-20 | Thread handling mechanism |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20198A US2604863A (en) | 1948-04-10 | 1948-04-10 | Special stitch sewing machine |
| US262518A US2662496A (en) | 1948-04-10 | 1951-12-20 | Thread handling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2662496A true US2662496A (en) | 1953-12-15 |
Family
ID=26693155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US262518A Expired - Lifetime US2662496A (en) | 1948-04-10 | 1951-12-20 | Thread handling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2662496A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4021896A (en) * | 1975-09-11 | 1977-05-10 | Societe Alsacienne De Constructions Mecaniques De Mulhouse | Devices for tying a layer of threads or slivers |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422208A (en) * | 1943-05-21 | 1947-06-17 | American Mach & Foundry | Sewing mechanism |
-
1951
- 1951-12-20 US US262518A patent/US2662496A/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422208A (en) * | 1943-05-21 | 1947-06-17 | American Mach & Foundry | Sewing mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4021896A (en) * | 1975-09-11 | 1977-05-10 | Societe Alsacienne De Constructions Mecaniques De Mulhouse | Devices for tying a layer of threads or slivers |
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