DE1722969U - DOUBLE QUICKSTITCH SEWING MACHINE WITH ONE UPPER AND ONE LOWER FABRIC PUSH AND A VERTICAL UP AND DOWN NEEDLE BAR. - Google Patents

Description

Bo-jpel lockstitch sewing machine with an upper and a lower feeder and a needle bar that moves vertically up and down

When sewing sleeves on items of clothing, the army fabric must be in the area of the arm ball be stowed in places because the sleeve is cut a little wider than the sleeve opening in the torso. This accumulation of the sleeves is done either by a machine Sewing in the previous basting by hand or by damming up the excess emotionally Sleeve + open width by the seamstress pulling the sleeve fabric by means of scissors or the like. when sewing in by machine additionally at certain points of the Work piece advances.

The invention has set itself the task of creating a sewing machine by means of which the oversize of the sleeve material when sewing in the sleeve by machine by optionally increasing the feed of one fabric slide, e.g. an upper one Feed presser foot, can be dammed up at certain points on the work piece. to for this purpose the machine has an upper and a lower feeder and one vertical has up and down moving needle bar, provided with means through which the advance of the a fabric slide, e.g. an upper feed presser foot, while sewing, e.g. by operating a knee or push lever opposite the other knife pusher, e.g. a lower one, which continues to work at a constant feed rate

date

14.2,5b

Surname

Leaf - 2 -

52a, 50/02. 1 722 969. Dürkoppwcrkc Corporation. Bielefeld. | Double stitch sewing machine with an upper and a lower one. Knife gate valve and; a vertically up and down N.v; del rod. 15. 3. 54. D 7960. (T. 9; j, line 2) j

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Square fabric slider, optionally enlarged can. By eliminating manual labor or of Structural advancement of the excess width by hand, the insertion of the "sleeves" is simplified and that required for this operation Working hours reduced.

According to a further feature of the invention is for the feed presser foot which is adjustable during sewing a separate feed adjustment device is provided, the adjustment range, by means of stops interacting with its adjustment lever, between a Value., Which corresponds to the constant feed rate of the square slide and a selectable one Maximum value that is adjustable.

In order to ensure the relative displacement of the two layers of fabric when sewing with different feed rates, an intermediate plate is provided in the area of the sewing point, which can be inserted between the two layers of fabric if necessary, i.e. when it comes to fabrics with a rough or adhesive surface , e.g. _o can be swiveled in »-

Another feature of the invention has the purpose that Specifically, the extent of the helative change in the material feed movement of the feed presser foot to display. This is done, for example, with the help of one with the adjusting device for the Feed presser foot connected pointer, which when actuating the adjusting member the respective size of the change in feed

date

14.2.56

Bl.-

9URKOPP

52a, 50/02. 1722 969. Dürkoppwcrkc Aktiengesellschaft. Bielefeld. | Double lockstitch sewing machine with an upper JL Mfci and a lower fabric slide and * ¹ 'a sewing machine that moves vertically up and down . del rod. 15. 3. 54. D 7960. (T. 9; j, line 2)

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one in the field of vision of the mower on the sewing machine head attached scale indicates ...

Sewing machines with upper and lower fabric slides are known, but with these the feed adjustment takes place for both knife feeders together and synchronously through a single adjustment device, which is usually also the Needle transport is assigned by the accompanying needle. In a known two-thread chain stitch sewing machine, with basically also synchronously acting preload links. are also already Means are provided through which the upper knife gate valve a slightly larger feed can be given than the lower feeder to the upper one To demonstrate the fabric layer of a work piece a little faster than the lower one. These funds can however, can only be set when the machine is at a standstill. An optional change of the feed path of one fabric slide during the sewing process to avoid when sewing Sleeves on items of clothing stretch the sleeve of the sleeve, mainly in the area of the arm ball, To be able to accumulate something is not possible with the previously known machines. For the The machine created by the invention is in great demand in the clothing industry because only a few, specially trained workers are capable of a sleeve without a preceding one Sew in by machine. With the newly created machine, sewing in is the Sleeves on clothing are much easier,

date

Surname

52a, 50/02 I 722 969 Durkoppwcrkc Aktiengesellschaft Bielefeld | Doppcl steppsticlinahmischinc with an upper Ji MAi iush and a lower knife feeder and a vertical up and down neckUtange i5 3 54 D 7960 (T 9

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, because 'the seamstress only through a sideways movement of the knee lever or by pressing down a foot lever can accumulate automatically and by observing the display device, based on the experience gained, always the right amount achieved"

The drawing illustrates in, diagrammatic view of a AusführüngsYorm Erfindung3 ~ is the object * When ge'zeigten STähmaschine äs sich'um a column sewing machine of the known type having an upper and a lower Vor'schubdrückerfuss Viereclcstoffschieber. The following description is essentially limited to those "devices that have been added, _f or modified to achieve the object of the invention ·

As our feed member: a square material slide 1 is used, the feed movement of which is derived from an eccentric arranged on the lower shaft. Those Grtfsse of feeding of the square feed dog l'set by '' ine nich-t shown ^ known locking device on which gewünsohte Stiohlänge · ν For the upper fabric feed is, Vorscbubdrtickerfuss, 2 ^r provided, whose Vorsohubbev.egung of -this 'on the arm shaft arranged eccentric is derived.

I "· Date I 'Nam

SURKOPP

52a, 50/02 1722 969 Durkoppwerke Akticngesclischift Bielefeld | Double stcpp-tichnahmaschinc with an upper one and a lower knife and a vertical .iuf and abbcwcgttn Ni

Patent application D 17 315 .VI £ ^c! il ^an s ^{e 15} '54 d 7% o (t

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An adjusting lever "5" is used for its YorBchubstellung, which protrudes through an opening in the machine arm 4 to aassen and whose deflection can be limited by stop bolts 5 and 6, which are adjustable in an arc-shaped * slot 7 of an angle plate 8 * Dar AnsOhlagbolten ^ "sp is set so that when the control lever 3 is in place, the feed path of the feed presser foot" 2 ^{corresponds exactly to that of the square fabric slide 1%} , so that the material is moved forward evenly »

In order to change the feed path of the Yorschüb-'drückerfusses 2 while sewing the adjusting lever is j> via an intermediate member 9 articulated with one Ehä & * Onea balance-beam-like manner on the machine arm 4 mounted lever 10 is connected, at its other end a rod 11 is connected in an articulated; The rod 11 connects the lever 10 with an actuator, for example, with a pushing step; Durph. A ^ moving the rod 11t by means of the pushing rod (not shown), the ¹ adjusting lever is moved at the top, through which

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the feed path 'of the feed printer foot 2 is enlarged. , The upper limit of the Steady area ^ of the lever 3 can by means of \ of the stop bolt '6 are set. Means can be provided which, upon release

Name Bl .- ft

IURKOPP

Patent application D 17 315 V117

«A 50/02 1 722 969. Dürkoppwcrkc Corporation. Bielefeld. | Double step sewing machine with an upper and a lower feed valve and a needle bar that moves vertically up and down. 15. 3. 54. D 7960 (T 9 ·

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of the footstep the steep lever, 3 to Guide the stop ·· back to the bolt 5 ,, So In: e / ihe · Stilt, - in that of the feed pusher foot 2 carries out the same feed path as the square fabric slide 1. -. '' '

A downwardly projecting rod 13 is linked to the adjusting lever 3, the lower end of which is connected to an angle lever 14 Movement imparted to the rod on a connecting rod 17, adjustable in length ., is rotatably supported the pointer lö: ^ shows the extent of ^Relativr; .the change of the feed Vorschübbewegung

■ "/ drückjBrfus £ ies;.-2 on Aer \. Scale, one of the scale blocks attached to the head of the arm 23xan>^; in ^ der- ^" ■ ■ ^ - - ^:

; Zeigerätellüpg \ "a ⁿ ^ ^Xiegt: ^ f of 3 to which AnschiagböIzen -5 ari, 'what is 1 j ^r DABS the Vorschübwege _{of: h.} Vorspliubdfüokerfüsses 2 (■

.and the four-cornered slide &r;s; l "UbereinstjimWehi _.; " The display of the .relative change; 'of the ■ feed-' ■■ -; movements; ^v provides a liilf smittel for labor relief - is, however, .is for the puncture of the machine not essential.

On a holder 24 attached to the arm head

52a, 50/02. 1 722 969. Dürkoppwcrkc Aktiengesellschaft. Bielefeld. | Double stitch sewing machine with an upper and a lower fabric slide and a vertical, callable and removable needle bar. 15. 3. 54 D 7960. (T. 9; line 2) '

Patent application D 17 315 VII / 'j2a

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an intermediate plate 25 pivotally mounted, which when necessary, especially when the feed movement of the feed presser foot 2 compared to that of the square pusher 1 is changed, between the two "layers of fabric to be sewn together." The intermediate plate 25 is intended to prevent the fabric from being fed in differently when sewing the lower layer of fabric is pent up.

In contrast to the known design of a sewing machine in which the needle part in the advancing movement, the needle bar 26 performs in the inventive machine only vertical ^f up and down movements of the needle 27 ". Associated with it is a controlled presser rod 28, which also goes up and down and has a presser foot 29 ^; which holds the fabric down ¹ as long as the needle is in the fabric *

Claims

Claims (1)

Expectations DoppelsteppstichnähmasGliiniB with an upper and · ei nem 'lower feed dog and a serkrecht moved up and down the needle bar, characterized in that der'Vorschub of a feed dog, ^ iB. an upper Vorschubdrüükerfussee (2), against the constant, feed further working substance other slider, z "B · eines'unteren square fabric slider (l), during DEE Uähens _r '- can be increased, for example, by operating a Knie-- or foot lever, in order to accumulate the excess width of the sleeve material in the area of the arm ball when sewing sleeves onto items of clothing. -. . · Double lockstitch sewing machine according to claim 1, the fact that a separate feed adjustment device is provided for the feed presser foot (2) which can be adjusted during sewing) i ^ your-i.: in sj el lh eb ₇ el · _ (; 3 ') _:; z; u: β ammehw i rk end e stops; {^ 6). » between 'a! throwing the .d ^em ■ constajiteri feed · of the square fabric slide (1) eniöp, straightening' and 'eiliem • selectable n ^ maximum valuey ■ _f .-; ' _: ' adjustable: istt ν double lockstitch sewing machine according to claims 1 and 2, characterized by one in the area of the sewing point ^; 'Pivoting or _: slidable' Zvvisohen- · plate. (25), which, if necessary, can be inserted between the two layers of fabric to be sewn onto one another. '· \ r' ■■ ' date N α m β 3URKQPP 52a, 50/02. 1 722 969. Dürkoppwcrkc Aktiengesellschaft. Bielefeld. | Double stitch sewing machine with an upper Jk M ^ i 1 a) 6 and a lower fabric slide and a needle bar that moves vertically up and down. 15 March 54, D 7960. (T. 9: 1, 2) j Lockstitch sewing machine according to claims 1 to 3 * characterized by a _? preferredweiae; aia,: · ;; v ;. "Nähma3chinenkopf mounted (14), Skälenbleph (23> V on-thy A to the actuating lever (3) ^{'for; deni:,} i, h ^-; \ Λ Vorschubdrücterfusa (2) in connection · standing ^{^;} pointer '-: indicates ^ ■ fusses (2) ■ the fabric feed movement of the feed ^printer;:.' - (18) the extent of Helativveränderdng ^ · "■ .. ■ {/ ^_T: - ■ ^c