DE1813057B2 - Additional device for a button sewing machine - Google Patents

Description

1 2

The invention relates to an additional device for To simplify the structure of the device,

a button sewing machine, with one of the fingers, one of the fingers can be fixed and the other

casing for which be connected between the button and the F.nger with an adjusting device.

Workpiece-extending fastening threads forming, This adjusting device can be known per se

made of elastic material sleeve can be controlled in an aus- 5 way.

stretched state during button sewing. One of the fingers can be attached to a support plate

is held concentrically to the stitch image point. be attached and in a recess of the support

Bd of this from US Pat. No. 3,213,816 plate extend into it, while the other finger

known device, the sleeve is mounted on a height in a guide of the support plate displaceably

leu, cylindrical hub attached, which is in one piece and also extends into the recess.

a fragile one that is intended to be thrown away. The actuating device can be an electromagnet

Disc is formed The sleeve will be on top of this, and the movable finger kai.n with a spring Hub applied in the expanded state and connected so that it m dieAnlagestel. Then pull the hub with the disc and the sleeve under the lung against the fixed finger. This will The button clamping device of the button sewing machine is particularly easy to operate and simple

machine arranged after sewing on the button overall mechanism created,

it is necessary that the hub of the sleeve in a known manner arrives at the support plate

is removed so that the sleeve can pivot about the threads of the button sewing machine

that can be contracted around the button with. "« «, .. '·. uj

connect to the workpiece. For this purpose, »The device according to the invention also has the

the disc along the preformed bwchlinis has the particular advantage that it cannot be replaced with new ones

break and the broken pane can then be built in, but also in machines

threw. Although this creates a well-cloaked button - already existing machines,

stem could be created, is such an embodiment of the invention is

Disadvantageous procedure, <U first open the sleeve with reference to the figures of the drawing

the disc in the stated condition is explained. It shows

the must and after sewing the disc of Fig.l a view of a top perspective

Hand broken and removed and button sewing machine, the additional structure according to Ji

furthermore, each disc is shown only for one sewing operation of the invention which is carried out on this machine

Could find use. 3 is mounted, -.-.-... The aim of the invention is to produce a “. Fi f-2 is an enlarged partial plan view of one Stidumhüllung means "a sleeve made of elastic part of the sewing machine shown in Fig. 1, where- Simplify material. when the additional device is in an ineffective position

To achieve this goal, the invention is tong is pivoted and the part of this device is based on the technical problem that the sleeve is in its rest position,
rend of Nähvoigangs exciting device as Figure 3 in that the sleeve is pivoted listed in the sewing process in ^the accessory device in the operating position verentspanntem state of the device a Teuaufsicht of the sewing machine, said form,

can be booked, during the sewing operation in ^Fi §- ^{4 is an} enlarged perspective view of

is kept tensioned and after the 4o of the sewing machine attachment,

The sewing process is removed from the device.

kana without having to do the same thing. ^th device,

According to the invention, this object is thereby achieved. Hfet that two looks in longitudinal alignment relative to one another along the line 6-6 of Fig. 4,

are movable finsers rgeatn on their in 45 Fig. 7 a detailed sectional view along the

Facing the ends that can be brought against one another sleeve line 7-7 of FIG. 6,

bear receiving heads. In a simple manner, FIG. 8 shows a partial supervision of the Httlsenhalteninj;

longer the strokes closed directly on the machine to the ^{m "Qrer} position, a sleeve

movable fingers are applied, if this is shown in dashed lines,

more closely, and by a movement as in Fig. 9 a partial view, which the case holder

the finger away from each other can point this sleeve in the ring in its separated position, the elastic

required expanded state during the stical sleeve is shown in dashed lines,

Button sewing process. According to Fig. 10 is a partial sectional view showing the use When sewing on buttons, the fingers will return to the sleeve device while sewing on

so that the sleeve is relaxed, and shows the work of a button, and

piece can be removed in a single way. F i g. 11 a detailed cross-sectional view of a button

With particular advantage, the sleeve attachments, which are sewn to a tissue or a material receiving heads, have a circular segment-shaped cross section and which, according to the invention, is blended with a stem and can be seen in abutment against one another. ^;
Have side faces. This shaping of the sleeve receiving heads is a common button sewing machine, making it easier to apply the sleeves, as is usually the case in clothing sleeves. Furthermore, it can be used for the light industry. The sewing machine 20 has the advantage of holding the sleeves in that a base 22 which is normally arranged on a table 24 which cannot be brought into abutment against one another and which has a horizontal upper surface of the sleeve receiving heads which is conical at the top. As Fig.l shows, the base 22 is widened. As a result of this measure, the sleeves are arranged and securely fixed relative to the table top 25, even in the expanded state, that a normally perpendicular hold. Front wall 28 of the base 22 inwards in the ab-

stood up to the front edge 36 of the table top 26 78, 80 limited in this direction. The angle iron

is arranged around a platform 32 between these parts 82 therefore forms a stop.

Train Jen. At the bottom of the sewing machine from F i g. 1 it can be seen that the thread end

20 extends laterally from this and in the lower 94 of a screw bolt 96 in the end 74 of the

right distance to the platform 32 a fabric support arm 5 lever 74, 76, 78, 80 is screwed and from

34, on which the usual throat plate 3 * »arranged this lever extends upwards. The bolt 96

is, in which at the outer end the elongated one, has a head 98, and a nut 100 is used

substantially right-angled taphole 38 designed to secure the bolt to end 74,

is arranged. The loop end 102 of an elongated

The sewing machine 20 also has the normal io coil spring 104, which is located under a tensile-tensioned horizontal fabric support plate 40 which is located, the threaded end 94 of the forward and toward the front edge 30 screw bolt 96. This end is against one of the The table top 26 extends over this material support unintentional displacement over the upper end plate of the sewing machine thread 42, which has the usual head 44 held on the bolt by the widened head 98 at the outer end. The other end of the spring 104 extends over which includes a mechanism that causes the top end of the fabric backing plate 40 to spaced and reciprocate the sewing needle 46. In therefrom and Zn is a non-illustrated position the eyelet 48 is secured in a conventional manner, the sewing thread 50 on the machine 20th The arrangement is retracted. Usual, releasable button clamping device, that the helical spring 104 continuously the lever lines are denoted by 52. The clamping devices 74, 76, 78, 80 are pretensioned in such a way that this endeavoring direction 52 has a pair at a lateral distance of · is. from the in F i g. 2 on arms 54, 56 arranged in one another, which pivot in one direction of the clockwise direction of rotation, button essentially at a diametrically opposite position, so that the in FIG. 3 assumes position, grasp the opposite sides. The button has first and It should be noted that this pivoting movement is limited by second, transversely extending thread take-up openings, the stop 82, 60, 62, and the usual devices are screw 196 extend transversely through the stop provided, in a known manner, the button 58 of the other end W of the lever 74, 76, 78, 80 in one end relative to the needle 46 to move the row of a rectangular, flat console 108. The other after each pair of openings 60, 62 under the end of the console 108 extends sideways to bring the needle, so that when the sewing 30 the edge 88 of the lever 74,76,78, 80 addition, machine 20 a thread connection between the mit 110 is an elongated, im essential button 58 and the material is made on the designated rectangular support plate, which is a main of the button to be sewn. section 112 has From the end 114 of the main section

Since the sewing machine 20 per se is not part of the cut 112 and, as a continuation of the marginal edge 116 Invention forms is only so much of this 35 extends a tongue 118, which on its outer The machine shown and described as ending in a downwardly bent flange 120

Acknowledgment of the invention is required is expiring. Screws 122 extend across

The additional device 64 according to the invention, which develops the ICS console and is screwed into the sewing machine 20 from the outset in geder (not shown), which can be in the tongue 118, but are also designed as an addition to the front 40, around this tongue Sole 108 can be used below the conventional button sewing machines so that the main part can extend beyond the edge 124 of the button sewing machine 20 without the need to make any changes to the section 112 of the support plate 110, the console 1C8 has an elongated, The main section 112 is flat, substantially right-hand- The main section 112 is attached to its front angular bar 66 which, as shown at 68, has 45 longitudinal edge 126 near its end 128 with at one of its ends at the top of the fabric- one facing inward extending recess 130 support plate 40 is screwed. The other end is provided, the one extending in the longitudinal direction 66 A of the rod 66, extends laterally over the stretching edge 132 and at a lateral distance from the side wall 70 of the sewing machine 20. The 50 allelic side walls 134 and 136 are delimited at 72 at the end 66/4, which are arranged from one another and essentially parallel to this projecting end. On the outer free end 74 of a Z-shaped lever 74, 76 of the underside of the main section 112, the 78, 80 is hinged, which consists of an elastic material leg 138 of a first K-shaped finger 140 is attached. As can be seen from the figures in the drawing

At 82, an angle iron is referred to, which is a men, a portion of the leg 138 extends

has lower leg 84, which on the underside 55 into the recess 130 and runs into a lower

of the end 74 of the lever 74, 76, 78, 80 is attached. right sleeve receiving head 142, this

This fastening point is at a point that has the shape of a in the sleeve receiving head in cross section Distance within the pivot connection 72 in front of the circular segment, as is shown in FIGS. 8 and 9

is seen. The angle iron 82 has a countersunk is shown. Like F i g. 6 shows the outer runs

right leg 86 on. The leg 86 engages over 60 side surface 144 of the sleeve receiving head 142 from

one of the edges 88 of the lever 74,76,78,80, and the upper end to the lower end obliquely inward.

Leg section 86 to whom an edge 90 (Fig. 2 The other side surface 146 of the sleeve receiving

and 3), which is intended to "move against the head 142, which is opposite to the side surface 144

On the other hand, there is no inclination to lay adjacent edge 92 of rod 66 when tidying up.

the lever 74, 76, 78, 80 from the one shown in FIG. 2 illustrated 63 on the underside of the main section 112 is

th position in the direction of clockwise rotation in which a guide channel 148 is provided, which is on a

in Fig. 3 position shown is pivoted. This ends in the side wall 136 of the recess 130

the pivoting movement of the lever 74,76 opens and at the other end with the end 114

of the main section 112 completes. In this guide, the right and left flanges are 192

The duct 148 is movable to and fro in the long and 194 with the threaded openings 196.

elongated leg sections 15 · of a second fin. The electromagnet 186 indicates a conventional one

gersl52 arranged The second finger 152 has and going T-shaped anchor 204, the

an end portion that extends into the recess 5 in this embodiment, a shaft 206, the

13 · extends into it. As shown in the figures of the drawing - slidably received inside the magnet,

Mine shown, this end section of the fin and an externally arranged transverse head 208 runs on-

sers 152 in a vertical second sleeve. The electromagnet 186 has the usual

except head 154, which also has an inclined serpentine winding 21 ·, from the ends of which the

Conducting surface 156 has, while the side surface 156, io lines 212 extend.

that of the side surface 14 '' of the first sleeve receptacle is located opposite the head, which is also connected without inclination. The coupling has a pair of lugs 216, the configuration and arrangement of the fingers 218, which extend from the transverse head 208 in a direction 14 and 152, is such that the planar sides extend away from the shaft 106 and (like the surfaces 146 and MS of the sleeve receiving heads 152 (15, FIGS. 4 and 5 show) at a lateral distance from one another and 154 lie flush against one another when the accessory device is on the other and essentially parallel to one another in its rest position when the other are arranged opposite one another. The additional device is in the operating position, sets 216 and 218 include, to a certain extent, the sleeve receiving head 154 from the sleeve receiving stand, the end of the finger 152 which is separated from the sleeve head 142, the side surface 15S of its sleeve receiving head 154 being arranged away from it, and parallel position retotiv to the side surface 14 "maintains. the lugs 216 and 218 receive between the leg portion 159 of the second finger 152 a substantially flat tongue which is longitudinally reciprocable in the channel 148 by means of the finger 152 axially held by one end of a closure plate Wi the lower end sleeve 222 extends, with which the tongue of the main section 112 of the support plate 110 is connected in one piece. Like F i g. 4 and 5 projections 216 and 218 by means of a pivot pin, this locking plate is essentially connected to a window 224 which is rectangular against displacement and is arranged in such a way that one of its ends is held in place by means of a nut 228. 164 lies in the plane of the side wall 136 and the end sleeve 222 is firmly connected to the end of the finger 152 extending over a longitudinal edge 166 in the plane of the longitudinal 30, the end 114 of the main section 112 of the support plate edge 126 of the main section 112 .

A drive bracket is generally provided with 168 The structure also includes means that (Fig. 5). The drive bracket 168 directs the armature 204 to its extended position an elongated angle iron 170 which, as shown in FIGS. 4 and 5 is shown about this has a leg portion 172 which is essentially the outer end of the pin 224 with a purpose flush against the flange 120, and further provided opening 228, the one end 230 of a long one elongated leg portion 174 that receives elongated coil spring 232 that extends in a direction away from the main portion 112. The other end 234 of FIG stretches. The leg portion 172 is attached to the flange 120. Spring 232 is secured in an opening 236 made in the fastened by means of a screw connection 176, 178. 40 main section 112 of plate HO near the

In Fig. 5 is 180 with a substantially right-end 1Ϊ4 is formed.

• ' ^: -e designates support plate. The support plate 180 has From the above description and from

L end on, which is located under the leg section figures of the drawing can be seen that at a

174 extends and on this by means of screws 182 excitation of the winding 210 of the armature 204 against the

attached is the nuts 184 have. 45 force of the spring 232 is withdrawn. Serve

The illustrated in the figures of the drawing acts movement of the AbschlußhU'se 222 in the adjusting mechanism is provided with 186 denotes When DAR same direction and, consequently, ^e:, ne motion embodiment, provided is this Stellvorrich- of the finger 152 in the same direction. This actuation an electromagnet. The electromagnet 186 has the movement of the finger 152 causing the sleeve ends to have the usual structure and, opposite, has 50 receiving head 154 from the one shown in FIG. 6 and 8 show mounting brackets 188 and 190, and each position in the position shown in FIG. 9 position shown verKonsole is at its lower ends with elongated pushes. If, however, the winding 210 is not energized, the rectangular mounting flanges 192 and 194 are opened, then the force of the coil spring 232 causes armed. Each mounting flange 192 and 194 has the armature 204 extending from the winding 210 into a threaded hole 196. 55 moves out, and thereby the finger 152 is with the

It is now to the F i g. 2, 3 and S reference sleeve receiving head 154 from the in FIG. 9 dargenommcii. The electromagnet 186 is moved out onto the supporting position and takes the plate 180 back on, in such a way that the longitudinal in FIGS. 6 and 8 position shown. The fin edge 198 of the flange 194 is flush with the longitudinal ger 140 and moves while the rear edge 200 of the section 174 closes. The support 60 and reciprocating movement of the finger 152 not, plate 180 has openings (not shown) in order to receive a threaded screw 202 through a switch. The Gc- controlled. For this purpose the lines 212 thread screw 202 is also screwed into the threaded opening in the usual manner with one end of the wires 238 196 of the flange 194, and thereby connected to 240 of the cable 242. The other is detachably the electromagnet 186 on 65 ends of the wires 238 and 240 of the cable 242 are attached to the support plate 180. Since it is insignificant for the operation with any electrical voltage source verder the device, which side is bound.
of the sewing machine arm 42 attached the device. The wire 240 is interrupted, and there arise

Ends 240A and 240 ß, which is released with the two contact support plate 110 from their inoperative position, the th normally open unipolar pressure is shown in Fig. 2, so move switch 244 are connected. The switch 244 has the lever 74, 76, 78, 80 together with the support button 246, which is normally in the plate 110 under the pulling action of the spring 104 into the position shown in FIG. 1 upper layer shown is biased, 5 clockwise direction so that the support when the contacts of the switch 244 are open. Plate 110 is moved into a position in which it is There is a holder 248 for the switch 244 in front of the embroidery plate, as shown in FIG. 1 seen. The bracket 248 is an angle iron, which is shown. The support plate 110 comes to a standstill between the elongated, essentially right-hand throat plate 36 and the needle 46. This angular leg section 250, which is limited by the rotational movement by the contact of the usual means ar of the front edge 30 of the table 26 impact 82 against the rod 66. The pivot is attached. A leg portion extends transversely from the leg portion 250 and from the movement of the lever 74, 76, 78, 80 away from the edge 30 so that the recess 130 is perpendicular to which the switch 244 is positioned relative to the tap hole 38 by means of a fastening in alignment and is attached to the transmission device 253. The holder 248 »5 needle 46 is arranged. The support plate 110 remains installed in such a way that the operator can comfortably reach the in this operating position while approaching all switches. In the case of the stemmed buttons shown, this switch is swiveled immediately if a button without a handle is to be sewn next to the fabric support arm 34 and the magnet 186.

arranged when the additional device 64 is in the ao A mounting button 255 wira in the usual way

F i g. 1 position shown is presented, and the button 58 is in the button input With 254 a relatively small, essentially clamping device 52 is also used in the usual way.

Borrowed hollow sleeve denotes which is set from a clasU-. The operator now takes a

cal material, such as rubber or a tensioned sleeve 254 and places this over the sleeve

elastic plastic material. The sleeves t $ receiving heads 142 and 154, as shown in phantom in

254 lie on top 26 of table 24, and FIG. 8 is shown.

to the right of the button sewing machine 20, as shown in FIG. 1 and these sleeves are fully folded to form the layers 258 and 260, constantly relaxed and contracted, before it in and will be used by the operator over the stitch of the machine. With regard to the plate 36 placed under the support plate 110. Using the additional device 64 it should be noted that the operator now presses the actuating sleeve 254 in its relaxed and contracted button 246, lowers the button clamping device 52 from its own position on the sleeve receiving heads 142, 154 and puts the sewing machine 20 into operation, these (Fig. 8) being attached when these operations take place in the usual way,
and the device is in the rest position or in the inoperative position. When the device is energized, the winding 210, 'and thereby the is put into operation, so the magnet 186 armature 204 is withdrawn. When the transverse head energizes and the ferrule head 154 is moved by the 208 toward the winding 210, the ferrule head 142 follows separately to move the ferrule 254 of fingers 152 in the same direction ^; from its relaxed cylindrical shape, as shown in FIG. 40, and the leg 150 slides to the right in FIG. 8, into the guide channel 148 shown in FIG. 9 and carries the sleeve receptacle-> expand shape. head 154 with itself. The formation of the thread handle with the aid of the attachment 64 can best be described in this way from the fixed sleeve receiving head 142, and this causes the sleeve 254 to first refer to FIG. 2 of the drawing 45 is stretched from the relaxed position,, is taken. the in F i g. 8 is shown, in which in F i g. The auxiliary device 64 shown in FIG. 9 is here in one of its two expanded positions. As shown in FIG. 2, the sleeve 254 is essentially coaxial with the needle hole 38, ) lever 74, 76, 78, 80 around its pivot connection 72 so that the needle 46 freely passes through the sleeve 254 in a Counterclockwise direction while sewing buttons,
direction of rotation from the in F i g. 1 Lags he> When the button 58, as described above, pivoted out. The range of movement is lowered, if it touches the upper ends of the sleeve type, that corner 112α of the main section 112 receiving heads 142,154 (see FIG. 10). While the plate 110 gives the edge 36 A of the needle plate 36 free of the usual and normal operation of the sewing machine and lies next to this edge and 62 and are spaced from one another by the fabric right when layers 258 and 260 up and down, the additional device 64 is in the position shown in FIG usual and known

It should now be remembered that the lever 74, 60 th way.

76, 78, 80 is made of an elastic material and, when the thread connection is ready, the when the lever is depressed, the carrying sewing machine 20 is turned off and you parts of the sewing plate 110 in their disengaged or ineffective actuating machine return to the rest shown in FIG opposite the sewing machine 20 to Iringen (how backwards. The operator then leaves the it is shown in FIG is pretensioned in such a way that the connecting line to the winding 2i · is interrupted, The coil spring 232 moves the armature 204 in move as shown in Fig. 1 if the one direction away from the winding 210 so that

this reaches the rest position shown in FIGS. 1, 2, 4 and S.

This closes the sleeve receiving head 154 retracted the sleeve receiving head 142, as shown in FIG. 8 is shown S

The operator now opens the button jig 52 and removes the fabric 256 the machine out. When the fabric 256 is removed, the sewing thread is torn off, and the sleeve 254 is lifted off the sleeve receiving heads 142 and 154. The fabric 256 is then put into a new one Position brought relative to the throat plate 36, or it a new fabric is inserted and the above process is repeated to add one to sew on the second button and stalk it. »5

As already explained, the support plate 11 is in its operating position shown in FIG. 1 of sewing the button. Only when a button is to be sewn on that is not included a stem or a sleeve is to be provided, μ the support plate Hf is moved into its rest position, which is shown in FIG

The conical shape of the sleeve receiving heads 142 and 154 are provided for frictional retention of the sleeve 254, while the «s Sleeve receiving head 154 is moved by the sleeve receiving head 142 because, if such a kouische If the shape were not present, the sleeve 254 would be inadvertently brought out of its position. that can if it is extended. s «

Claims (7)

Patent claims: 1. Additional device for a button sewing machine, with one the handle wrapping for the one extending between the button and the workpiece Fastening threads forming, made of elastic material sleeve in the expanded State is kept concentric to the stitch pattern during the button sewing process, characterized by two fingers (140, 140, 152), the sleeve receiving heads (142, 154) at their ends that can be brought into abutment against one another wear. 2. Additional device according to claim 1, characterized in that the sleeve receiving heads (142, 154) have a circular segment-shaped cross section and can be brought into contact with one another have flat side surfaces (146,158). 3. Apparatus according to claim 1 or 2, characterized in that they are not against each other sides (144, 156) of the sleeve receiving heads (142, 154) which can be brought into abutment extend upwards widen conically. 4. Device according to one of claims 1 to 3, characterized in that one of the fingers (14) is fixed and the other finger (150) is connected to an adjusting device (186). 5. Device according to one of claims 1 to 4, characterized in that one of the fingers (14 ·) is attached to a support plate (112) and »I in a recess (13 ·) in the support plate (112> extends into it and that the other finger (150) is displaceable in a guide (14t) of the support plate (112) is mounted and also extends into the recess (13t) 6. Apparatus according to claim 4, characterized in that the 'adjusting device (186) is a Is an electromagnet and that the movable finger (15) is connected to a spring (232) so that the "pulls it into the resting position against the fixed finger (14) 7. Apparatus according to claim 5, characterized in that the Tiagplette (112) in itself is pivotably mounted in a known manner on the button sewing machine 1 sheet of drawings