EP0150971B1 - A curved cloth stretch frame construction for an embroidery sewing machine - Google Patents
A curved cloth stretch frame construction for an embroidery sewing machine Download PDFInfo
- Publication number
- EP0150971B1 EP0150971B1 EP19850300407 EP85300407A EP0150971B1 EP 0150971 B1 EP0150971 B1 EP 0150971B1 EP 19850300407 EP19850300407 EP 19850300407 EP 85300407 A EP85300407 A EP 85300407A EP 0150971 B1 EP0150971 B1 EP 0150971B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frame body
- frame
- embroidery
- rotation
- transmitting means
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B21/00—Sewing machines with devices for automatically controlling movement of work-carrier relative to stitch-forming mechanism in order to obtain particular configuration of seam, e.g. programme-controlled for sewing collars, for attaching pockets
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2501/00—Wearing apparel
- D10B2501/04—Outerwear; Protective garments
- D10B2501/042—Headwear
Definitions
- the present invention relates to a curved cloth stretch frame construction which is used for embroidering sleeve-shaped curved cloth works such as caps, arms of undershirts or the like.
- a planar cloth work is usually stretched on an annular tambour and a core of a slightly smaller diameter is laid on and pressed against the cloth work, which is thus held between the inner side surface of the tambour and the outer side surface of the core, and is kept tightly stretched.
- the tambour is longitudinally transferred and transversely shifted on a plane by a drive means linked with a connection means cooperating with the tambour, and the cloth work can thus be embroidered.
- the tambour can not be used for embroidering a nonplanar work, e.g: a cap with a visor.
- a curved cloth stretch frame construction for an embroidery sewing machine having a vertically reciprocating stitch needle and a movable frame adapted to move two-dimensionally on a substantially horizontal plane, comprising a substantially cylindrical frame body having a free front end thereof.
- the present invention is characterized in that the frame body encloses a space large enough to contain a bed of said embroidery sewing machine, an embroidery window disposed in said frame body, a reciprocation transmitting means co-operating with said frame body to transmit axial drive to said frame body, and rotation transmitting means co-operating with said frame body to transmit rotation drive to said frame body, said reciprocation transmitting means and said rotation transmitting means being operably connected with said movable frame, and said frame body, together with a curved cloth work, stretched over said embroidery window, being supported for rotation and axial transfer between said bed and said stitch needle.
- Fig. 1 shows all of an embroidery sewing machine.
- a pair of head 2 are mounted, at the base portions thereof, on a base 1. Although two heads are shown in the figure, only one will suffice, or more than two may be provided.
- a stitch needle 3 is provided in the front end portion of the heads 2 for vertical movement as is known.
- a bed 4 is disposed under the head 2 with the rear base portion thereof secured in the base 1. The front end portion of the bed 4 is provided with a needle plate 5 having a needle hole 5a opposite to the needle 3, as shown in Figs. 2 and 5. Inside the bed 4, is contained a well known shuttle.
- a movable frame 6 is placed on the base 1 and is adapted for forward and rearward movement (in the direction shown by an arrow 7) and right and left (in the direction shown by an arrow 8) by a transfer mechanism (not shown) in accordance with preprogramming.
- a curved cloth stretch frame 9 is accommodated over the bed 4 and is constructed, as shown in Figs. 2 to 6, so as to be moved forward and rearward in accordance with the front and rear transfer of said movable frame 6 and to be rotated around the axis thereof in response to the right and left shift of the movable frame 6.
- the curved cloth stretch frame 9 is shown, in Fig. 1, only for one of the beds 4 but the other bed is provided, of course, with another frame 9.
- a frame body 10 of the curved cloth stretch frame is constructed in the form of a hollow cylinder and consists of a first frame section 11 at the rear base side and a second frame section 12 at the front end said two frame sections being made by dividing the frame 8 by a plane crossing rectangularly the axis of the frame 9.
- a plurality of connection cuts 13 are formed at the front end of the first frame section 11.
- Connection projections 14 are formed at the rear end of the second frame section 12 and are adapted to be inserted in said connection cuts 13, with the axes of said sections coinciding each other, the relative rotation between said two sections around the axes being thus prevented.
- a coupling hole 15 is formed in the first frame section 11, a threaded hole 16 is formed in the second frame section 12, and a resilient connection piece 17 is fixed on the outer surface of the second frame section 12 by a fastening screw 18 inserted in the threaded hole 16.
- the extreme end of the connection piece 17 is formed as a coupling projection 19 extending towards the axis of the frame body 10 as shown in Fig. 3.
- the couple projection 19 is adapted to be inserted in said coupling hole 15, the frame sections 11 and 12 being thereby prevented from parting axially from each other.
- a plurality of connection pieces 17 are used.
- the outer surface of the frame body 10 is formed as a curved cloth stretch surface 20, the upper half of which is of a semicylindrical form with an arcuate cross section 'around the axis of said frame body 10.
- This surface 20 is intended to have put thereon the internal side surface of a cap 21 shown exemplarily as a cloth work to be embroidered (called a curved cloth as well).
- the surface 20 is shown, in the figure, as a circular cylindrical surface but may be a polygonal cylindrical surface consisting of several planar areas.
- the front end of the frame body 10 is made a free end, onto which the cap 21 can easily be put from the free end side of said frame body 10.
- an accomo- dation space 22 in which said bed 4 is disposed as shown in Figs. 8 and 9.
- This accommodation space 22 is made sufficiently large so that the frame body 10 may rotate by a prescribed angle around the axis thereof with the bed 4 disposed therein.
- An opening 23 is bored through the curved cloth stretch surface 20 and is widely defined in the form of a window. This is hereafter called an embroidery window as well.
- This window 23 is adapted to allow the stitch needle 3 to pass therethrough from over the frame body 10 towards the bed 4.
- a cloth fastener 24, with one end thereof secured on the outer surface of the second frame section 12, is made of a resilient material and is adapted to clamp the cloth work cap 21.
- a plurality of cloth fasteners 24 are attached on the second frame section 12.
- a toothed wheel 25, formed on the outer surface of the first frame section 11 is shown as an example of a driven member of a drive transmitting means and includes a number of teeth 25a projecting from the outer surface of the first frame section 11.
- This toothed wheel 25 serves both as a main part of a rotation transmitting means to rotate the first frame section 11 along the curved cloth stretch surface 20 and a main part of a reciprocation transmitting means to transfer axially the first frame section.
- the rotation transmitting means and the reciprocation transmitting means may be prepared as separate units.
- a frame support means 26 for the curved cloth stretch frame 9 bears up the same for rotation around and reciprocation along the axis of said frame 9. In this frame support means 26, a sustaining bracket 27 is secured against the base 1 as shown in Fig.
- a guide rail 28 is mounted fixedly on the sustaining bracket 27, and a guide groove 28a is formed by a bottom wall 28c and both side walls 28b.
- This guide groove 28a is formed along the direction of the front and rear movement of the aforementioned movable frame 6.
- On each inner side of said side walls 28b is provided a guide slot 29 extending horizontally.
- a slide member 30 is fitted in said guide groove 28a for longitudinal movement with both side edges thereof received in said guide slots 29 as shown in Fig. 7.
- a mount plate 31 is secured on the slider member 30, support poles 32 and 33 are stood on the mount plate 31, a support arm 34 is fixed on the support pole 32, and support arms 35 and 36 are fixed on the support pole 33.
- a grooved gear wheel 37 is rotably mounted on said support arm 34 and consists of a gear 37a and of a pair of flanges 37b attached to both sides of said gear 37a.
- This gear 37a is formed so as to be in mesh with said toothed wheel 25, and the width of a groove 37c defined by the flanges 37b is adjusted to be suitable for receiving said toothed wheel 25.
- Another grooved gear wheel 38 is carried by said support pole 32 for rotation and is similarly constructed.
- a roller 39 is rotatably supported by said support pole 33 and rollers 40 and 41 are rotatably. mounted on said support arms 35 and 36 respectively. These rollers 39 to 41 are disposed so as to support rotatably the lower side surface of said second frame section 12 as shown in Fig. 8.
- the curved cloth stretch frame 9 is thus supported with said toothed wheel 25 in mesh with the grooved gear wheels 37 and 38 and with the bottom surface of said second frame section 12 resting on said rollers 39 to 41 as shown in Figs. 8 and 9.
- the bed 4 is positioned at the upper region of said accomoda- tion space 22 and the upper surface of the needle plate 5 is close to the curved cloth stretch surface 20 as shown in Figs. 10 and 11.
- a transmitting frame 42 is now fixed on said movable frame 6 by a mounting screw 43 and is adapted to rotate said curved cloth stretch frame 9 around the axis thereof and to transfer the same front and rear along said axis in accordance with the movement of said movable frame 6.
- the transmitting frame 42 includes a frame base 44 and a slide duct 45 which is formed in the frame base 44 and is adapted to engage said toothed wheel 25.
- a rack 46 is formed on the bottom surface of the slide duct 45 and is provided with rack teeth 46a engageable with said engage toothed wheel 25.
- Said toothed wheel 25 rests rotatably on said grooved gear wheels 37 and 38, and is received in said slide duct 45 as shown in Figs. 2 and 9; the rack 46 being in mesh with said toothed wheel 25.
- the connection piece 17 is first disconnected from the coupling hole 15, the second frame section 12 of said curved cloth stretch frame 9 is then separated from said first frame section 11 as shown in Fig. 4, and the cap 21 is put on said separated second frame section 12.
- the cap 21 is set on the free end of said second frame section 12 as shown in Fig. 6, and an area on said cap 21 to be embroidered (an embroidery area) is brought to the central portion of said embroidery window 23 and is abutted on the curved cloth stretch surface 20.
- the peripheral edge of the cap 21 is clipped by the cloth fastener 24 on the outer side surface of the second frame section 12 and the visor 21 a is similarly clipped by the cloth fastener 24, the cap 21 being thus fixed.
- the connection projection 14 of the second frame section 12 is fitted in the connection cut 13 of the first frame section 11 and the couple projection 19 of the connection piece 17 is fitted in the couple hole 15, the second frame section 12 being thus jointed with the first frame section 11 as shown in Fig. 2.
- the embroidery area on the cap 21 stretched on the embroidery window 23 is placed directly over the needle plate 5 of the bed 4 and under the stitch needle 3.
- the stitch needle 3 moving vertically proceeds to stitch an embroidery thread on the embroidery area on the cap 21 and the movable frame 6 is driven front and rear and right and left in accordance with a preprogrammed embroidery pattern.
- the movable frame 6 is driven forward or backward in this manner the curved cloth stretch frame 9 is translated accordingly with the slide member 30 travelling forward or rearward along the guide slots 29, since the toothed wheel 25 on the curved cloth stretch frame 9 is held by the slide duct 45 of the transmitting frame 42 and, in addition, is fitted in the grooves 37c of the grooved gear wheels 37 and 38.
- the curved cloth stretch frame 9 When the movable frame 6 is driven right and left, the curved cloth stretch frame 9 is rotated around the axis thereof together with the toothed wheel 25 rotated by the rack 46.
- the curved cloth stretch frame 9 is rotatably supported by the rollers 39 to 41 and the grooved gear wheels 37 and 38, and the toothed wheel 25, being further received in the grooved gear wheels 37 and 38, is in mesh with the rack gear 46a of the transmitting frame 42.
- the embroidery area on the cap 21 stretched on the embroidery window 23 is transferred forward and rearward by the movement of the movable frame 6 and is shifted right and left by the right and left movement of the movable frame 6 as shown in Figs. 10 and 11; a prescribed embroidery pattern being stitched on the embroidery area on the cap 21.
- the cap 21 may alternatively be set on the second frame section 12 already jointed with the first frame section 11 as shown in Fig. 11.
- Figure 12 shows a stocking 21e, expandable and contractable due to the elasticity thereof, to be embroidered.
- the stocking 21 can simply be clamped on the free front end portion of the frame body 10e due to the self elasticity of the stocking 21e.
- the elasticity of the stocking 21 e is thus utilized as a function to clip the stocking 21 against the curved cloth stretch frame 9e.
- Members which are considered functionally or constructionally equivalent to those shown in previous figures are given the numerals same as in those figures but with an alphabetical suffix e, repeated descriptions of such members being omitted.
- Numerals in the following figures are successively given alphabetical suffixes f, g, h, i, j, k and I according to the same idea if necessary, repeated descriptions being similarly omitted.
- Figure 13 shows now a case in which a long cylindrical cloth work, an arm 21f of a shirt, is embroidered.
- the arm 21f is fastened against said curved cloth stretch surface 20 at both sides of said embroidery frame 23f by passing a pair of rubber bands 47 and 48 after the arm 21f is adapted on the frame body 10f and the embroidery area is correctly positioned on the embroidery window 23f.
- the arm 21f can be kept tightly stretched and is correctly embroidered.
- Figure 14 shows how a mark or the like is embroidered on a breast pocket 21 g.
- the free end portion of the frame body 10g is made thinner so as to be inserted into the pocket 21g.
- the cloth fastener 24g for clipping the cloth work and the pocket 21g are provided on the frame body 10g.
- a fastening piece 49 of the cloth fastener 24g is pivoted and is biased by a spring not shown so that the tip portion of the fastening piece 49 presses down. Under the tip of this fastening piece 49 is attached a needle cloth 50 by which a cloth work is clipped.
- the fastening piece 49 may alternatively be a spring plate attached to the frame body 10g.
- FIG 15 shows a different embodiment of the embroidery window.
- the embroidery window 23h is provided as a cut formed to extend to the free end of the frame body 10h.
- Figures 16 to 18 show an embodiment of the curved cloth stretch frame construction different in the stretch frame and the frame support means and including alternative drive means.
- the curved cloth stretch frame 9i in this embodiment consists of the frame body 10i having the form of an incomplete circular cylinder with the lowest quarter of the side wall thereof cut away longitudinally.
- the frame 10i consists of a single member and the upper surface thereof serves as a semicylindrical curved cloth stretch surface 20i.
- an elongated support bar 51 is arranged for rotation and axial transfer, by a bearing means not shown.
- Support arms 52 and 53 are fixed on the support bar 51 at one ends thereof and on the internal surface of said frame body 10i at the other ends thereof, which serve both as a connection part for axial reciprocation and for rotation. Pairs of the support arms 52 and 53 are arranged at two axial points on the support bar 51 and the frame body 10i can be supported around the support bar 51 via these support arms 52 and 53. Said support bar 51 is positioned so as to pass the center of curvature of the external surface of the frame body 10i.
- a gear 54 is fixed to one end of the support bar 51 and is adapted to be rotated and to be axially transferred by a drive means 55.
- a guide rod 56 of a rectangular cross section is rotatably supported in parallel with said support bar 51 by bearing means not shown, and is adapted to be rotated by an electric motor 57 in the forward and the reverse directions.
- a transfer member 58 is fitted on the guide rectangular rod 56 for axial sliding movement and is provided with a gear 59 on the outer surface thereof. At both sides of the gear 59 are formed flanges 60, between which a groove 61 is defined. Said gear 54 is received in this groove 61 and is in mesh with said gear 59.
- a neck 62 is formed on the side of the transfer member 58 and one end of an operation rod 63 is received in the neck 62.
- An endless timing belt 66 is passed round a pair of pulleys 64 and 65.
- One transfer side 66a of this timing belt 66 is disposed in parallel with said guide rectangular rod 56 and the other end of said operation rod 63 is fixed on this transfer side 66a.
- One of said pulleys 64 is adapted to be rotated by another electric motor 67 in forward and reverse directions. Said electric motors 57 and 67 are controlled to operate in response to the prescribed embroidery pattern.
- the electric motor 57 operates first to rotate said guide rectangular rod 56, the transfer member 58 and the gear 59 are then actuated to rotate the gear 54 and the support bar 51, and the curved cloth stretch frame 9i is thereby rotated to shift the curved cloth work right and left.
- the electric motor 67 operates to turn the timing belt 66, the operation rod 63 is then moved forward or backward to slidably actuate the transfer member 58 and the support bar 51 and the curved cloth stretch frame 9i are thereby transferred forward and backward to move the curved cloth work similarly.
- FIG 19 shows a further embodiment for the curved cloth stretch frame and the bed.
- the curved cloth stretch frame 9j consists of the frame body 10j having the form of an incomplete circular cylinder with the upper wall thereof cut away longitudinally and the bed 4j is constructed so as to have a circular cross section.
- the curved cloth work 21j stretched on the frame body 10j is transferred keeping contact with the upper surface of the bed 4j in the embroidery window 23j.
- Figures 20 and 21 show another embodiment for the curved cloth stretch frame which is suitable for embroidering a slender cylindrically curved cloth work (a slender arm or a close breast pocket of a shirt for ladies for example).
- the base portion of the curved cloth stretch frame 9k in this embodiment is constructed to have the same form as one shown in foregoing Fig. 6 has, and the front end thereof is closed thinner as shown.
- the cross section of said front end consists of some arcuate curves around the center of rotation 10a of the frame body as shown in Fig. 21, and the curved cloth stretch frame 9k, on rotating, does not collide with the bed 4k.
- Figures 22 to 26 show a final embodiment of the curved cloth stretch frame construction.
- a support shaft 68 is secured at one end thereof on the setting 11.
- a pair of support plates 69 are fixedly attached on the internal surface of the frame body 101 and are provided with bearings 70 aligned along the axis of the frame body 101.
- the support shaft 68 is journalled for rotation by the bearings 70 and for axial movement.
- a pair of flanges 71 are attached on the rear end portion of said frame body 101.
- On the bottom side of the transmitting frame 421 are formed two corresponding grooves 72 in which said flanges 71 are engageably fitted.
- a pair of string members 73 and 74 for transmitting drive torque are passed crosswise in opposite directions round the frame body 101 from the transmitting frame 421 through a passage slot 75.
- One ends 73a and 74a of said string members 73 and 74 are fixed on said transmitting frame 421 by fixing screws 76 threadedly attached in said transmitting frame 421.
- the other ends of said string members 73 and 74 are passed on the outer surface of the first frame section 111 in opposite directions and are then connected towards a terminal screw 77 inserted threadedly in the first frame section 111 via straining springs 78 (tension springs).
- the string members 73 and 74 therefore, can tightly be stretched at all times.
- Said string members 73 and 74 are preferably less stretchy members, for example, wires.
- the sum of the lengths of the string members 73 and 74 laid on the outer surface of the first frame section 111 is adjusted to be equal to one round on said section 111. The sum, however, may be smaller (a length sufficient to realize a required angle of revolution) or larger (several rounds).
- one end 73a of the string member 73 is pulled and moved to the left.
- the other end 73b of the string member 73 consequently pulls and turns the curved cloth stretch frame 91 in the direction shown by an arrow 79.
- the string member 74 rotates instantly the curved cloth stretch frame 91 in the reverse direction shown by an arrow 80.
- the string members 73 and 74 do not loose to any extent and the frame 421, therefore, can rotate the curved cloth stretch frame 91 in alternative directions correctly in response to the reciprocation of said frame 421.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Description
- The present invention relates to a curved cloth stretch frame construction which is used for embroidering sleeve-shaped curved cloth works such as caps, arms of undershirts or the like.
- A planar cloth work is usually stretched on an annular tambour and a core of a slightly smaller diameter is laid on and pressed against the cloth work, which is thus held between the inner side surface of the tambour and the outer side surface of the core, and is kept tightly stretched. The tambour is longitudinally transferred and transversely shifted on a plane by a drive means linked with a connection means cooperating with the tambour, and the cloth work can thus be embroidered. The tambour, however, can not be used for embroidering a nonplanar work, e.g: a cap with a visor. Moreover, only such a tambour as of a very limited diameter can be inserted into a cylindrical work for example, an arm of underwear, since a space for accommodating a shuttle must be reserved inside the work. It is therefore pointed out as a serious drawback in the prior art that only , a very small area on the cloth work can be prepared for continuous embroidery.
- In FR-A-380577 there is described a curved cloth stretch frame construction for an embroidery sewing machine having a vertically reciprocating stitch needle and a movable frame adapted to move two-dimensionally on a substantially horizontal plane, comprising a substantially cylindrical frame body having a free front end thereof.
- The present invention is characterized in that the frame body encloses a space large enough to contain a bed of said embroidery sewing machine, an embroidery window disposed in said frame body, a reciprocation transmitting means co-operating with said frame body to transmit axial drive to said frame body, and rotation transmitting means co-operating with said frame body to transmit rotation drive to said frame body, said reciprocation transmitting means and said rotation transmitting means being operably connected with said movable frame, and said frame body, together with a curved cloth work, stretched over said embroidery window, being supported for rotation and axial transfer between said bed and said stitch needle.
- It is therefore an object of the present invention to provide a curved cloth stretch frame construction having a frame body which is constructed to have a substantially cylindrical outer surface and is suitable to be adapted inside a sleeve-shaped curved cloth work, thereby enabling the curved cloth work to be continuously embroidered on a very wide embroidery area.
- It is another object of the present invention to provide a similar frame body which, however, consists of two separable frame sections, thereby making it efficient to put a cloth work on said frame body.
- It is still another object of the present invention to provide a similar frame construction which can correctly transmit a delicate movement for embroidery to said frame body.
- Other objects and advantages of the invention will become apparent during the following discussion of the accompanying drawings which are included by way of illustration only.
- In the drawings:
- Fig. 1 is a perspective view showing wholly an embroidery sewing machine;
- Fig. 2 is a perspective view showing a curved cloth stretch frame construction;
- Fig. 3 is a section taken along a line III-III in Fig. 2;
- Fig. 4 is a fragmentary view showing the frame construction in Fig. 2;
- Fig. 5 is a perspective view showing the frame construction in Fig. 2 with a second frame section taken away;
- Fig. 6 is a perspective view showing the second frame section and a cap put thereon;
- Fig. 7 is a view as seen along an arrow VII in Fig. 5;
- Fig. 8 is a section taken along a line VIII-VIII in Fig. 9;
- Fig. 9 is a section taken along a line IX-IX in Fig. 8;
- Fig. 10 is an enlarged view showing the essential part of the construction in Fig. 8;
- Fig. 11 is a sectional view showing the operative process concerning Fig. 10;
- Fig. 12 is a view for explaining a case where a stocking is embroidered;
- Fig. 13 is a view for explaining a case where an arm of a shirt is embroidered;
- Fig. 14 is a view for explaining a case where a breast pocket of a shirt is embroidered;
- Fig. 15 is a perspective view showing a different embodiment of an embroidery window;
- Fig. 16 is a perspective view showing a different embodiment of the curved cloth stretch frame construction;
- Fig. 17 is a view as seen along an arrow XVII in Fig. 16;
- Fig. 18 is a perspective view showing a drive means for the curved cloth stretch frame construction in Fig. 16;
- Fig. 19 is a sectional view showing a still different embodiment of the curved cloth stretch frame and the machine bed of the embroidery sewing machine;
- Fig. 20 is a perspective view showing a still different embodiment of the curved cloth stretch frame;
- Fig. 21 is a front elevational view showing the relation between the curved cloth stretch frame in Fig. 20 and the machine bed;
- Fig. 22 is a perspective view showing a still different embodiment of the curved cloth stretch frame construction;
- Fig. 23 is a perspective view showing the construction in Fig. 22 with some parts thereof taken away or broken;
- Fig. 24 is a section taken along a line XXIV-XXIV in Fig. 22 with some parts thereof omitted;
- Fig. 25 is a section taken along a line XXV-XXV in Fig. 24; and
- Fig. 26 is a section taken along a line XXVI-XXVI in Fig. 24.
- Referring to the drawings, the preferred embodiments are now described. Fig. 1 shows all of an embroidery sewing machine. A pair of
head 2 are mounted, at the base portions thereof, on abase 1. Although two heads are shown in the figure, only one will suffice, or more than two may be provided. Astitch needle 3 is provided in the front end portion of theheads 2 for vertical movement as is known. Abed 4 is disposed under thehead 2 with the rear base portion thereof secured in thebase 1. The front end portion of thebed 4 is provided with aneedle plate 5 having aneedle hole 5a opposite to theneedle 3, as shown in Figs. 2 and 5. Inside thebed 4, is contained a well known shuttle. Amovable frame 6 is placed on thebase 1 and is adapted for forward and rearward movement (in the direction shown by an arrow 7) and right and left (in the direction shown by an arrow 8) by a transfer mechanism (not shown) in accordance with preprogramming. A curvedcloth stretch frame 9 is accommodated over thebed 4 and is constructed, as shown in Figs. 2 to 6, so as to be moved forward and rearward in accordance with the front and rear transfer of saidmovable frame 6 and to be rotated around the axis thereof in response to the right and left shift of themovable frame 6. The curvedcloth stretch frame 9 is shown, in Fig. 1, only for one of thebeds 4 but the other bed is provided, of course, with anotherframe 9. When the curvedcloth stretch frame 9 is not set on the embroidery sewing machine, a usual embroidery operation can be obtained with a conventional tambour attached on themovable frame 6. Aframe body 10 of the curved cloth stretch frame is constructed in the form of a hollow cylinder and consists of afirst frame section 11 at the rear base side and asecond frame section 12 at the front end said two frame sections being made by dividing theframe 8 by a plane crossing rectangularly the axis of theframe 9. A plurality ofconnection cuts 13 are formed at the front end of thefirst frame section 11.Connection projections 14 are formed at the rear end of thesecond frame section 12 and are adapted to be inserted in saidconnection cuts 13, with the axes of said sections coinciding each other, the relative rotation between said two sections around the axes being thus prevented. Acoupling hole 15 is formed in thefirst frame section 11, a threadedhole 16 is formed in thesecond frame section 12, and aresilient connection piece 17 is fixed on the outer surface of thesecond frame section 12 by afastening screw 18 inserted in the threadedhole 16. The extreme end of theconnection piece 17 is formed as acoupling projection 19 extending towards the axis of theframe body 10 as shown in Fig. 3. Thecouple projection 19 is adapted to be inserted in saidcoupling hole 15, theframe sections connection pieces 17 are used. The outer surface of theframe body 10 is formed as a curvedcloth stretch surface 20, the upper half of which is of a semicylindrical form with an arcuate cross section 'around the axis of saidframe body 10. Thissurface 20 is intended to have put thereon the internal side surface of acap 21 shown exemplarily as a cloth work to be embroidered (called a curved cloth as well). Thesurface 20 is shown, in the figure, as a circular cylindrical surface but may be a polygonal cylindrical surface consisting of several planar areas. The front end of theframe body 10 is made a free end, onto which thecap 21 can easily be put from the free end side of saidframe body 10. Inside theframe body 10 is an accomo-dation space 22 in which saidbed 4 is disposed as shown in Figs. 8 and 9. Thisaccommodation space 22 is made sufficiently large so that theframe body 10 may rotate by a prescribed angle around the axis thereof with thebed 4 disposed therein. Anopening 23 is bored through the curvedcloth stretch surface 20 and is widely defined in the form of a window. This is hereafter called an embroidery window as well. Thiswindow 23 is adapted to allow thestitch needle 3 to pass therethrough from over theframe body 10 towards thebed 4. Acloth fastener 24, with one end thereof secured on the outer surface of thesecond frame section 12, is made of a resilient material and is adapted to clamp thecloth work cap 21. A plurality ofcloth fasteners 24 are attached on thesecond frame section 12. Atoothed wheel 25, formed on the outer surface of thefirst frame section 11 is shown as an example of a driven member of a drive transmitting means and includes a number ofteeth 25a projecting from the outer surface of thefirst frame section 11. Thistoothed wheel 25 serves both as a main part of a rotation transmitting means to rotate thefirst frame section 11 along the curvedcloth stretch surface 20 and a main part of a reciprocation transmitting means to transfer axially the first frame section. The rotation transmitting means and the reciprocation transmitting means may be prepared as separate units. A frame support means 26 for the curvedcloth stretch frame 9 bears up the same for rotation around and reciprocation along the axis of saidframe 9. In this frame support means 26, a sustainingbracket 27 is secured against thebase 1 as shown in Fig. 2, aguide rail 28 is mounted fixedly on the sustainingbracket 27, and aguide groove 28a is formed by abottom wall 28c and bothside walls 28b. Thisguide groove 28a is formed along the direction of the front and rear movement of the aforementionedmovable frame 6. On each inner side of saidside walls 28b is provided aguide slot 29 extending horizontally. Aslide member 30 is fitted in saidguide groove 28a for longitudinal movement with both side edges thereof received in saidguide slots 29 as shown in Fig. 7. Amount plate 31 is secured on theslider member 30,support poles mount plate 31, asupport arm 34 is fixed on thesupport pole 32, and supportarms support pole 33. Agrooved gear wheel 37 is rotably mounted on saidsupport arm 34 and consists of agear 37a and of a pair offlanges 37b attached to both sides of saidgear 37a. Thisgear 37a is formed so as to be in mesh with saidtoothed wheel 25, and the width of agroove 37c defined by theflanges 37b is adjusted to be suitable for receiving saidtoothed wheel 25. Anothergrooved gear wheel 38 is carried by saidsupport pole 32 for rotation and is similarly constructed. Aroller 39 is rotatably supported by saidsupport pole 33 androllers support arms rollers 39 to 41 are disposed so as to support rotatably the lower side surface of saidsecond frame section 12 as shown in Fig. 8. The curvedcloth stretch frame 9 is thus supported with saidtoothed wheel 25 in mesh with thegrooved gear wheels second frame section 12 resting on saidrollers 39 to 41 as shown in Figs. 8 and 9. In this situation, thebed 4 is positioned at the upper region of said accomoda-tion space 22 and the upper surface of theneedle plate 5 is close to the curvedcloth stretch surface 20 as shown in Figs. 10 and 11. A transmittingframe 42 is now fixed on saidmovable frame 6 by a mountingscrew 43 and is adapted to rotate said curvedcloth stretch frame 9 around the axis thereof and to transfer the same front and rear along said axis in accordance with the movement of saidmovable frame 6. The transmittingframe 42 includes aframe base 44 and aslide duct 45 which is formed in theframe base 44 and is adapted to engage saidtoothed wheel 25. Arack 46 is formed on the bottom surface of theslide duct 45 and is provided withrack teeth 46a engageable with said engagetoothed wheel 25. Saidtoothed wheel 25 rests rotatably on saidgrooved gear wheels slide duct 45 as shown in Figs. 2 and 9; therack 46 being in mesh with saidtoothed wheel 25. - When the side surface of the cap 21 (an exemplary shown curved cloth work) is to be embroidered with the curved cloth stretch frame constructed as mentioned above, the
connection piece 17 is first disconnected from thecoupling hole 15, thesecond frame section 12 of said curvedcloth stretch frame 9 is then separated from saidfirst frame section 11 as shown in Fig. 4, and thecap 21 is put on said separatedsecond frame section 12. Thecap 21 is set on the free end of saidsecond frame section 12 as shown in Fig. 6, and an area on saidcap 21 to be embroidered (an embroidery area) is brought to the central portion of saidembroidery window 23 and is abutted on the curvedcloth stretch surface 20. In this situation, the peripheral edge of thecap 21 is clipped by thecloth fastener 24 on the outer side surface of thesecond frame section 12 and thevisor 21 a is similarly clipped by thecloth fastener 24, thecap 21 being thus fixed. Theconnection projection 14 of thesecond frame section 12 is fitted in the connection cut 13 of thefirst frame section 11 and thecouple projection 19 of theconnection piece 17 is fitted in thecouple hole 15, thesecond frame section 12 being thus jointed with thefirst frame section 11 as shown in Fig. 2. With thesecond frame section 12 and thefirst frame section 11 jointed with each other, the embroidery area on thecap 21 stretched on theembroidery window 23 is placed directly over theneedle plate 5 of thebed 4 and under thestitch needle 3. While the embroidery sewing machine is operated, thestitch needle 3 moving vertically proceeds to stitch an embroidery thread on the embroidery area on thecap 21 and themovable frame 6 is driven front and rear and right and left in accordance with a preprogrammed embroidery pattern. When themovable frame 6 is driven forward or backward in this manner the curvedcloth stretch frame 9 is translated accordingly with theslide member 30 travelling forward or rearward along theguide slots 29, since thetoothed wheel 25 on the curvedcloth stretch frame 9 is held by theslide duct 45 of the transmittingframe 42 and, in addition, is fitted in thegrooves 37c of thegrooved gear wheels movable frame 6 is driven right and left, the curvedcloth stretch frame 9 is rotated around the axis thereof together with thetoothed wheel 25 rotated by therack 46. The curvedcloth stretch frame 9 is rotatably supported by therollers 39 to 41 and thegrooved gear wheels toothed wheel 25, being further received in thegrooved gear wheels rack gear 46a of the transmittingframe 42. The embroidery area on thecap 21 stretched on theembroidery window 23 is transferred forward and rearward by the movement of themovable frame 6 and is shifted right and left by the right and left movement of themovable frame 6 as shown in Figs. 10 and 11; a prescribed embroidery pattern being stitched on the embroidery area on thecap 21. If a number ofsecond frame sections 12 are prepared, setting of the cap on thesecond frame section 12 can efficiently be carried out while another cap is being embroidered by the embroidery sewing machine. Thecap 21 may alternatively be set on thesecond frame section 12 already jointed with thefirst frame section 11 as shown in Fig. 11. - Figure 12 shows a
stocking 21e, expandable and contractable due to the elasticity thereof, to be embroidered. In this case, the stocking 21 can simply be clamped on the free front end portion of the frame body 10e due to the self elasticity of thestocking 21e. - The elasticity of the stocking 21 e is thus utilized as a function to clip the stocking 21 against the curved cloth stretch frame 9e. Members which are considered functionally or constructionally equivalent to those shown in previous figures are given the numerals same as in those figures but with an alphabetical suffix e, repeated descriptions of such members being omitted. (Numerals in the following figures are successively given alphabetical suffixes f, g, h, i, j, k and I according to the same idea if necessary, repeated descriptions being similarly omitted.)
- Figure 13 shows now a case in which a long cylindrical cloth work, an
arm 21f of a shirt, is embroidered. In this case, thearm 21f is fastened against said curvedcloth stretch surface 20 at both sides of saidembroidery frame 23f by passing a pair ofrubber bands arm 21f is adapted on theframe body 10f and the embroidery area is correctly positioned on theembroidery window 23f. Thearm 21f can be kept tightly stretched and is correctly embroidered. - Figure 14 shows how a mark or the like is embroidered on a
breast pocket 21 g. In this case, the free end portion of theframe body 10g is made thinner so as to be inserted into thepocket 21g. The cloth fastener 24g for clipping the cloth work and thepocket 21g, are provided on theframe body 10g. Afastening piece 49 of the cloth fastener 24g is pivoted and is biased by a spring not shown so that the tip portion of thefastening piece 49 presses down. Under the tip of thisfastening piece 49 is attached aneedle cloth 50 by which a cloth work is clipped. Thefastening piece 49 may alternatively be a spring plate attached to theframe body 10g. - Figure 15 shows a different embodiment of the embroidery window. The
embroidery window 23h is provided as a cut formed to extend to the free end of theframe body 10h. - Figures 16 to 18 show an embodiment of the curved cloth stretch frame construction different in the stretch frame and the frame support means and including alternative drive means. The curved
cloth stretch frame 9i in this embodiment consists of theframe body 10i having the form of an incomplete circular cylinder with the lowest quarter of the side wall thereof cut away longitudinally. Theframe 10i consists of a single member and the upper surface thereof serves as a semicylindrical curved cloth stretch surface 20i. In the frame support means 26i for said curvedcloth stretch frame 9i, anelongated support bar 51 is arranged for rotation and axial transfer, by a bearing means not shown.Support arms support bar 51 at one ends thereof and on the internal surface of saidframe body 10i at the other ends thereof, which serve both as a connection part for axial reciprocation and for rotation. Pairs of thesupport arms support bar 51 and theframe body 10i can be supported around thesupport bar 51 via thesesupport arms support bar 51 is positioned so as to pass the center of curvature of the external surface of theframe body 10i. Agear 54 is fixed to one end of thesupport bar 51 and is adapted to be rotated and to be axially transferred by a drive means 55. In this drive means 55, aguide rod 56 of a rectangular cross section is rotatably supported in parallel with saidsupport bar 51 by bearing means not shown, and is adapted to be rotated by anelectric motor 57 in the forward and the reverse directions. Atransfer member 58 is fitted on the guiderectangular rod 56 for axial sliding movement and is provided with agear 59 on the outer surface thereof. At both sides of thegear 59 are formedflanges 60, between which agroove 61 is defined. Saidgear 54 is received in thisgroove 61 and is in mesh with saidgear 59. Aneck 62 is formed on the side of thetransfer member 58 and one end of anoperation rod 63 is received in theneck 62. Anendless timing belt 66 is passed round a pair ofpulleys transfer side 66a of thistiming belt 66 is disposed in parallel with said guiderectangular rod 56 and the other end of saidoperation rod 63 is fixed on thistransfer side 66a. One of said pulleys 64 is adapted to be rotated by anotherelectric motor 67 in forward and reverse directions. Saidelectric motors - In the above described construction, the
electric motor 57 operates first to rotate said guiderectangular rod 56, thetransfer member 58 and thegear 59 are then actuated to rotate thegear 54 and thesupport bar 51, and the curvedcloth stretch frame 9i is thereby rotated to shift the curved cloth work right and left. Theelectric motor 67 operates to turn thetiming belt 66, theoperation rod 63 is then moved forward or backward to slidably actuate thetransfer member 58 and thesupport bar 51 and the curvedcloth stretch frame 9i are thereby transferred forward and backward to move the curved cloth work similarly. - Figure 19 shows a further embodiment for the curved cloth stretch frame and the bed. The curved
cloth stretch frame 9j consists of theframe body 10j having the form of an incomplete circular cylinder with the upper wall thereof cut away longitudinally and the bed 4j is constructed so as to have a circular cross section. In this embodiment, thecurved cloth work 21j stretched on theframe body 10j is transferred keeping contact with the upper surface of the bed 4j in theembroidery window 23j. - Figures 20 and 21 show another embodiment for the curved cloth stretch frame which is suitable for embroidering a slender cylindrically curved cloth work (a slender arm or a close breast pocket of a shirt for ladies for example). The base portion of the curved
cloth stretch frame 9k in this embodiment is constructed to have the same form as one shown in foregoing Fig. 6 has, and the front end thereof is closed thinner as shown. The cross section of said front end consists of some arcuate curves around the center of rotation 10a of the frame body as shown in Fig. 21, and the curvedcloth stretch frame 9k, on rotating, does not collide with thebed 4k. - Figures 22 to 26 show a final embodiment of the curved cloth stretch frame construction. A
support shaft 68 is secured at one end thereof on the setting 11. A pair ofsupport plates 69 are fixedly attached on the internal surface of theframe body 101 and are provided withbearings 70 aligned along the axis of theframe body 101. Thesupport shaft 68 is journalled for rotation by thebearings 70 and for axial movement. A pair offlanges 71 are attached on the rear end portion of saidframe body 101. On the bottom side of the transmittingframe 421 are formed twocorresponding grooves 72 in which saidflanges 71 are engageably fitted. A pair ofstring members frame body 101 from the transmittingframe 421 through apassage slot 75. One ends 73a and 74a of saidstring members frame 421 by fixingscrews 76 threadedly attached in said transmittingframe 421. The other ends of saidstring members first frame section 111 in opposite directions and are then connected towards aterminal screw 77 inserted threadedly in thefirst frame section 111 via straining springs 78 (tension springs). Thestring members string members string members first frame section 111 is adjusted to be equal to one round on saidsection 111. The sum, however, may be smaller (a length sufficient to realize a required angle of revolution) or larger (several rounds). - The operation proper to the above described embodiment is as follows. When the
movable frame 61 is transferred backward and forward the curvedcloth stretch frame 91 is similarly moved front and rear together with theframe 61, since theflanges 71 of the curvedcloth stretch frame 91 are engageably set in thegrooves 72 of theframe 421. When the movable frame is shifted right and left, the transmittingframe 421 is driven transversely to the. axis of the curvedcloth stretch frame 61, and the movement of saidframe 421 is transmitted to the curvedcloth stretch frame 91 through thestring members frame 91 being thus rotated right and left with respect to thecentral support shaft 68. When the transmittingframe 421 is driven to the left in Fig. 26, oneend 73a of thestring member 73 is pulled and moved to the left. Theother end 73b of thestring member 73 consequently pulls and turns the curvedcloth stretch frame 91 in the direction shown by an arrow 79. When the movement of theframe 421 is now changed to the reverse direction, i.e., to the right, thestring member 74 rotates instantly the curvedcloth stretch frame 91 in the reverse direction shown by anarrow 80. In this case, thestring members frame 421, therefore, can rotate the curvedcloth stretch frame 91 in alternative directions correctly in response to the reciprocation of saidframe 421. - It is an advantage of the present invention that, in embroidering the
cylindrical side surface 21 b of theembroidery work 21, the free end of theframe body 10 can simply be inserted into theend opening 21c of saidcylindrical work 21, the embroidery area thereof is tightly stretched on the curvedcloth stretch surface 20, and the curved area, as it is, can be embroidered. This advantage is very remarkable since saidcylindrical work 21, with the curved state thereof maintained, can be embroidered broadly and neatly. It is another advantage of the present invention that, on reversing the direction of the longitudinal movement of theframe 421, the curvedcloth stretch frame 91 which has just been rotated in a certain direction by thestring member 73, can instantly be returned in the reverse direction without any play or delay by thestring member 74. That is, the delicate movement of theframe 421 around the turning point thereof is faithfully transmitted to the curvedcloth stretch frame 91 and any fine embroidery pattern can correctly be realized.
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1887984A JPS60162853A (en) | 1984-02-02 | 1984-02-02 | Bent cloth tenter frame for embroidering machine |
JP18879/84 | 1984-02-02 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0150971A2 EP0150971A2 (en) | 1985-08-07 |
EP0150971A3 EP0150971A3 (en) | 1985-08-21 |
EP0150971B1 true EP0150971B1 (en) | 1988-11-09 |
Family
ID=11983835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19850300407 Expired EP0150971B1 (en) | 1984-02-02 | 1985-01-22 | A curved cloth stretch frame construction for an embroidery sewing machine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0150971B1 (en) |
JP (1) | JPS60162853A (en) |
DE (1) | DE3566130D1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011008045A1 (en) | 2011-01-01 | 2012-07-05 | Pfaff Industriesysteme Und Maschinen Ag | Method for sewing pocket blank on closed round woven-workpiece such as T-shirt, involves arranging portion of lower fabric portion sewn on pocket blank away from fastening seam of pocket blank by folding lower fabric portion |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4730566A (en) * | 1984-09-18 | 1988-03-15 | Porter Sewing Machines, Inc. | Automatic pocket label stitcher |
JPS6350305Y2 (en) * | 1985-03-09 | 1988-12-23 | ||
JPS61186564A (en) * | 1985-02-07 | 1986-08-20 | 東海工業ミシン株式会社 | Transfer of base cloth in embroidering machine |
JPS61186563A (en) * | 1985-12-28 | 1986-08-20 | 東海工業ミシン株式会社 | Apparatus for transferring base cloth in embroidering machine |
JPS61181485A (en) * | 1986-01-09 | 1986-08-14 | 東海工業ミシン株式会社 | Transfer of base cloth in embroidering machine |
JP2623239B2 (en) * | 1986-01-17 | 1997-06-25 | 蛇の目ミシン工業株式会社 | Stitch sewing machine |
DE3628624A1 (en) * | 1986-08-22 | 1988-02-25 | Union Special Gmbh | ALIGNMENT DEVICE FOR EDGE-FRIENDLY, AUTOMATIC ALIGNMENT OF TUBULAR SEWING PARTS TO BE USED FOR SEWING MACHINES |
JPH0535834Y2 (en) * | 1986-12-11 | 1993-09-10 | ||
IT1223664B (en) * | 1988-07-05 | 1990-09-29 | Spallinificio Torinese Srl | EQUIPMENT FOR THE AUTOMATIC SEWING OF PADDING SHOULDER FOR CLOTHES |
JPH0212652U (en) * | 1988-07-11 | 1990-01-26 | ||
JPH01229860A (en) * | 1988-11-18 | 1989-09-13 | Barudan Co Ltd | Embroidery sewing machine |
JPH0788617B2 (en) * | 1988-11-18 | 1995-09-27 | 株式会社 バルダン | Sewing machine for embroidering on the outer surface of the hat |
DE19637866A1 (en) * | 1996-09-17 | 1998-03-19 | Zsk Stickmasch Gmbh | Holder for caps on embroidery or sewing machine |
JP3743097B2 (en) * | 1997-02-25 | 2006-02-08 | アイシン精機株式会社 | Embroidery machine |
JP2002210285A (en) * | 2001-01-15 | 2002-07-30 | Barudan Co Ltd | Sewing machine |
JP2002360959A (en) * | 2001-06-04 | 2002-12-17 | Barudan Co Ltd | Control method for sewing machine |
JP4042104B2 (en) * | 2003-01-22 | 2008-02-06 | ヤマトミシン製造株式会社 | sewing machine |
JP2005318925A (en) * | 2004-05-06 | 2005-11-17 | Brother Ind Ltd | Embroidery sewing machine |
JP4975366B2 (en) * | 2006-05-09 | 2012-07-11 | 株式会社バルダン | Long cylindrical frame for embroidery processing |
GB2509769A (en) * | 2013-01-15 | 2014-07-16 | Mpt Group Ltd | Large area programmable sewing machine |
CN110904587B (en) * | 2019-12-16 | 2020-10-13 | 福建永信数控科技股份有限公司 | Working method of embroidery machine |
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FR380577A (en) * | 1907-08-06 | 1907-12-12 | Veit Swoboda | Stocking embroidery device |
US1720658A (en) * | 1925-05-26 | 1929-07-16 | Simmons Co | Machine for sewing pockets |
US1937491A (en) * | 1930-04-16 | 1933-11-28 | Carlin Comforts Inc | Self-balanced quilting machine |
US1946868A (en) * | 1930-10-20 | 1934-02-13 | Carlin Comforts Inc | Sewing mechanism for quilts and the like |
US2189045A (en) * | 1938-07-02 | 1940-02-06 | Jr Emil Prazak | Label sewing machine |
US2766709A (en) * | 1954-03-17 | 1956-10-16 | Ames Textile Corp | Sewing machine for tubular fabrics |
DE1932966U (en) * | 1965-12-07 | 1966-02-17 | Carl Zangs Aktien Ges Maschf | EMBROIDERY MACHINE WITH A SPREADING AND TENSIONING DEVICE FOR TUBE-SHAPED EMBROIDERY MATERIAL. |
DE1801973A1 (en) * | 1968-10-09 | 1970-06-04 | Zuse Kg | Drum for driving a flexible element |
JPS5111555A (en) * | 1974-07-19 | 1976-01-29 | Matsushita Electric Ind Co Ltd | PARUSUHABACHOSEISOCHI |
US4241681A (en) * | 1979-06-21 | 1980-12-30 | Porter Robert E | Tubular work feeder for sewing machine |
-
1984
- 1984-02-02 JP JP1887984A patent/JPS60162853A/en active Granted
-
1985
- 1985-01-22 EP EP19850300407 patent/EP0150971B1/en not_active Expired
- 1985-01-22 DE DE8585300407T patent/DE3566130D1/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011008045A1 (en) | 2011-01-01 | 2012-07-05 | Pfaff Industriesysteme Und Maschinen Ag | Method for sewing pocket blank on closed round woven-workpiece such as T-shirt, involves arranging portion of lower fabric portion sewn on pocket blank away from fastening seam of pocket blank by folding lower fabric portion |
Also Published As
Publication number | Publication date |
---|---|
DE3566130D1 (en) | 1988-12-15 |
JPS60162853A (en) | 1985-08-24 |
EP0150971A3 (en) | 1985-08-21 |
EP0150971A2 (en) | 1985-08-07 |
JPS6242066B2 (en) | 1987-09-07 |
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