DE161479C

DE161479C -

Info

Publication number: DE161479C
Application number: DENDAT161479D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Den Gegenstand vorliegender Erfindung bildet eine an Nähmaschinen anzubringende Vorrichtung, mittels welcher den den Stich bildenden Teilen der Maschine ein Streifen Band, Borte o. dgl. Besatzstoff dargeboten, in Schlangen- oder Spiralform gegen oder auf einen Stoffstreifen oder ein Werkstück beliebiger Form gelegt und daran festgenäht wird. Zu diesem Zwecke wird eine Spule,The subject matter of the present invention forms a device to be attached to sewing machines, by means of which the stitch forming parts of the machine a strip of tape, border or the like. in a snake or spiral shape against or on a strip of fabric or a workpiece of any shape and sewn to it. For this purpose a coil,

ίο auf welche der Besatzstoff aufgewickelt ist, in geeigneter Anordnung in der Nähe der den Stich bildenden Teile angebracht, und zwar zweckmäßig oberhalb der Tischplatte, vor der Nadel. Im Anschluß an die Spule befindet sich vor der Nadel ein feststehender Formgeber für den Besatzstoff, welcher auf dem Wege von der Spule zur Nadel durch langsam und zweckmäßig mit Unterbrechungen sich drehende Führungen in Schrauben- oder Spiralform um den Formgeber gewunden wird; von diesem Formgeber wird der spiralförmig gestaltete Besafzstreifen durch den Stoffschieber ebenso schnell heruntergezogen wie er auf diesen aufgewickelt wurde, und in Zickzack- oder Schlangenform auf dem damit zu verzierenden Arbeitsstück niedergelegt sowie durch die Nähmaschine an bezw. auf demselben befestigt, so daß- der Besatz entweder eine dem Rand des Arbeitsstückes angesetzte spitzenartige Zierkante oder sonst an einer anderen Stelle einen aufgenähten Zierbesatz bildet.ίο on which the trimmings are wound, attached in a suitable arrangement in the vicinity of the parts forming the stitch, and although useful above the table top, in front of the needle. Following the coil in front of the needle there is a fixed former for the trim material, which is on the way from the bobbin to the needle by slowly and appropriately with interruptions rotating guides in helical or spiral form wound around the former will; from this shaper it becomes spiral designed trim strips pulled down just as quickly by the fabric slide how it was wound on these, and in a zigzag or snake shape on the one with it Work piece to be decorated laid down as well as by the sewing machine on BEZW. on attached to the same so that the trim is either attached to the edge of the work piece lace-like decorative edge or otherwise sewn on at another point Ornamental trim forms.

Auf den beiliegenden Zeichnungen zeigt Fig. ι den Erfindungsgegenstand und die Art seiner Benutzung und Wirkung in perspektivischer Ansicht; Fig. 2 zeigt eine Vorderansicht des den Nadelantrieb enthaltenden Und die Besatzvorlegungsvorrichfung tragenden Armes der Nähmaschine teilweise im Schnitt, während Fig. 3 die Schaltvorrichtung zur Drehung der den Besatz zuführenden Teile darstellt; Fig. 4 zeigt im Längsschnitt die Spule, deren Träger und die Vorrichtungen zur Drehung der Besatzführungsteile, Fig. 5 die Arbeitsstellung des Formgebers zum Presserfuß und zum Stichloch der Stichplatte; Fig. 7 stellt die verstellbare Befestigung des Besatzspulenträgers am Nähmaschinenarm dar, während Fig. 6 beispielsweise ein Muster einer mit der Vorrichtung herstellbaren Zierkante darstellt.On the accompanying drawings, Fig. Ι shows the subject matter of the invention and the type its use and effect in perspective view; Fig. 2 shows a front view of the one containing the needle drive and carrying the trimming device Arm of the sewing machine partially in section, while Fig. 3 shows the switching device represents the rotation of the parts feeding the trimming; Fig. 4 shows in longitudinal section the coil, its supports and the devices for rotating the trimming guide parts, FIG. 5 shows the working position of the former in relation to the presser foot and to the needle hole of the throat plate; Fig. 7 shows the adjustable fastening of the trimming bobbin on the sewing machine arm while Fig. 6 shows, for example, a pattern of one with the device represents manufacturable decorative edge.

Der Kopf 12 des Nähmaschinenarmes trägt seitlich den Arm 13, in dessen Endnabe 14 mittels der Stellschraube 15 eine Hülse 16 befestigt ist; auf dieser sitzt drehbar ein Schaltrad 19, auf dessen Nabe ein Arm 17 aufgesetzt ist, an dem sich eine federnde, in das Schaltrad greifende Klinke 18 befindet. Die Hülse 16 ist auf ihrer unteren Endfläche mit klauenartigen Ansätzen versehen, diese greifen nach Art einer Kuppelung zwischen entsprechende Ansätze der Spindel 20,- deren Unteres Ende 29 den Formgeber 21 trägt. Dieser stellt einen flachen, nach vorn sich in seiner Stärke verjüngenden Körper dar. Die Spindel 20 ist am oberen Ende hohl und mit Gewinde zum Aufschrauben auf den Stift 22 versehen, welcher oben einen Drehknopf 23 fragt, dessen untere Fläche' der Nabe 14 anliegt, so daß durch Drehung" des Knopfes¹23 die Teile 20, 22 und 16 fest miteinander verbunden und an einer Drehung in der Nabe 14 verhindert werden köfrmen. Das Schaltrad 19 ist auf seiner unteren Stirnfläche mit ZähnenThe head 12 of the sewing machine arm laterally carries the arm 13, in the end hub 14 of which a sleeve 16 is fastened by means of the adjusting screw 15; a ratchet wheel 19 is rotatably seated on this, on the hub of which an arm 17 is placed, on which a resilient pawl 18 engaging in the ratchet wheel is located. The sleeve 16 is provided with claw-like projections on its lower end surface; these grip like a coupling between corresponding projections of the spindle 20, the lower end 29 of which carries the former 21. This represents a flat body tapering towards the front in its thickness. The spindle 20 is hollow at the upper end and provided with a thread for screwing onto the pin 22, which asks a rotary knob 23 at the top, the lower surface of which rests against the hub 14, so that by turning the button ¹ 23 the parts 20, 22 and 16 can be firmly connected to one another and prevented from rotating in the hub 14. The ratchet wheel 19 has teeth on its lower end face

L.L.

Claims

provided for coupling with a sleeve 24 which is rotatably pushed onto the spindle 20; this sleeve 24 has a collar 25 at the bottom, to which the trimming guide parts 26 and 27 are attached. The same carries the spool 28 on which the trim strips are wound. The upper guide 26 (FIG. 2) rotates in the opposite direction to the winding of the trim strip present on the spool 28 and serves to unwind the trim from the spool, while the lower guide 27 circles around the former 21 and winds the trim helically onto it. The helical formation is caused by the fact that the trim is continuously pulled off the former by the material slide at the same speed as it winds on the latter, the decreasing thickness of the former facilitating the downward sliding of the trim strip. The drive shaft 291 of the machine is provided at the front with a spur gear 30 which engages in the mating gear 31, the pivot of which is attached to the head of the sewing machine arm; the wheel 31 has a crank pin 32 at the front, which is connected to the pin 34 of the rocker arm 17 by means of the rod 33. The pins 32 and 34 are expediently designed as ball pins in order to achieve all-round freedom of movement of the connected parts; the pin 32 is attached to an arm 35, which can be screwed to the wheel 31 at various distances from the latter in order to change the size of the circuit of the wheel 19 can. The reverse movement of the latter is prevented by the resilient counter-pawl 36, which is carried by a lug 37 located on the arm 13; the spring plate 38 pressing against the upper flange of the bobbin 28 prevents the bobbin from rotating too easily and causes a slight pull on the facing as it unwinds from the bobbin. The coil 28 can after unscrewing the parts 20 and 22 removed from the sleeve 24 BEZW. on top of it. In order to attach one edge of the spirally or serpentine wound trim strip 39 to a straight or curved fabric strip 40, the fixed former expediently receives the arrangement shown in FIG Trimming spikes slightly cover the needle hole and the edge of the material to be fitted with the trimmings, with a suitable guide being provided for this. As a result of the adjustable connection of the arm 13 to the arm or head of the machine by the screws 43 engaging in the slot 42, the needle thread can be fed in various ways so that the seam runs through the center of the serpentine line or otherwise to the edge , a string or a narrow ribbon can also be inserted; depending on the choice of formers of different widths and the speed of rotation of the trimming guides, decorations of very different shapes can be obtained. After the set has been presented to the needle and introduced into the feed device, after starting the machine, the guides 26 and 27 pull the set from the bobbin and place it in helical lines around the former 21, from which it passes through the knife-gate valve at the same speed is removed with which it was wrapped around the former; the lower edge of the latter lies directly above the throat plate so that the folds of the facing can easily get from the former to the needle without changing their shape. Godfather ν τ claims:

1. Device for presenting; from Decorative trimmings for sewing machines, characterized by a fixed, flat former (21) and around it rotating guides (26, 27) which hold the trim strips running off a reel wind around the stationary former while he is of the latter through the feed device the sewing machine is withdrawn and thus in screw form under the presser foot and the Needle entered.

2. Embodiment of the device according to claim 1, characterized in that that the spool carrying the fabric strip is rotatably arranged on an axis (20) which carries the former (21) at the front and is attached to an adjustable arm (13)

"is fixed, with the one, detached rotating guide (26) next to the spool is arranged to peel off the trim strip while the other is also Depositing rotating guide (27) is located next to the former, around the trim strip under the activity a switching device to put the former.

1 sheet of drawings.