09-12-1938 дата публикации
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Номер заявки: 835023D
Дата заявки: 09-03-1938
[2]Ministry of commerce and industry.
[3]Direction of the industrial property.
[5]Gr. 6.-Cl. 7. No. 835.023
Device for controlling press fabric in the buttonhole machines.
[6]Society said: [...] - [...] A.-G. residing in Germany.
[7]Demanded 9 March 1938, to 14m h 37, to Paris.
Ta Issued the September 1938.-Published 9 December 1988.
[8](Patent application deposited in Germany 2 September 1987.-Declaration the applicant.)
[9]In the sewing machines-button
[10]past few, ia controlling the press fabric has [...]
[11]because using the elements-
[12]suitable [...], the presser, after
[13]installation of the fabric, press thereon
[14]after finishing and disengages do the buttonhole.
[15]With this arrangement, problems arise that when
[16]defect evolution it is pre-
[17]matured of the presser. To avoid this, de-
[18]delivering, i.e. to retain the press-
[19]fabric as desired in its working position
[20]and thereby maintain, in the event of defects, the fabric
[21]under the pressure and guiding the press-
[22]fabric, are combined according to the present inven-
[23]optionally, with the actuation levers-
[24]from presser, locking means
[25]that prevents disengagement of the press-
[27]The accompanying drawing is, as
[28]example, one embodiment of the object
[30]The fig. 1 is a side view of the ma-
[31]china with presser in position of-
[33]The fig. 2 is a view of the com-
[34]request of the packing fabric releases-the state of
[36]The fig. 3 is a plan view of the ma-
[38]The buttonhole sewing machine is
[39]composed of the usual manner of the frame has, the postb and support tray fabric c. On the tray c the presser d, which consists of the two parts d, d ', and which is mounted and oscillates on the bearing points e, e', by means of the levers A, h 'of the presser, levers having the bent arms /, /', which, at their ends, are bent hook-shaped. In these hooks engage arm parts g, g ', attached to the two levers h, h', which are mounted on the shaft i and oscillate with the shaft. L A support bracket is mounted on the lever A, and a spring maintains the bracket m and accordingly the levers A, A ' under tension. This console porto an angle lever bifurcated n, 0, which oscillates on the pivot p. O The lever is driven by the hand lever with two branches q, which can swing in a tray fabric c on its bearing point r. The lower portion of the hand lever with the lever 0 form a toggle. When the hand lever is brought to the position shown in fig. 1, the brace is extension, to press down the console i which is arranged on the lever A, and the arm parts g, g ', they also mounted on the levers A, A' and engaging the hooks of the bent legs /, / ', these branches take
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downwardly, so that the presser d, of is pressed onto the plate fabric. While the fabric is kept under the presser, c moves in the tray 5 during tapping the buttonhole and, during said advance, one side of the buttonhole is stitched. The worktable fabric c then moves and return during this return the second side of the slot io is inserted. At the final position, thus after completion the tapping of the buttonhole, the stop s pushes, upon return of the tray c, the bent part t o against the stop, so that the workpiece o is carried to the position shown in fig. 2. By the action of the spring or, h the lever is pulled up and, via the levers g, /, Je, the presser d is[...]. and the fabric is accordingly dropped. T o 2 The lever can swing on its pivot V. and is subjected to the action of the spring V. The spring pulls the lever towards the top. T The lever is controlled by a particular device, such a way that it assumes during the stitching, by rap -2 port 5 to the bell crank n, O, the position shown in fig. 2. In this position, the presser is released after termination of the stitching, the in that the stop s of the levern is brought against the 3o and lever that the lever O is turned down towards the outside. T The. lever is controlled in such a manner that shortly before the release of the presser, boodle it downwardly at the point that it presses the lever n downwardly and 35 press the presser on the fabric, after which it oscillates return to the position shown in fig. 2.
Or to prevent, in case of generation of defects, that the presser is discharged through 1' intermediate t of this lever, is mounted in the tray fabric, a pin w, which through the small spring is pulled up and is held in this position. Ankle Æ5 The normally occupies the position shown in fig. 2. If it is prevent disengagement of the presser, the pin V), which for handling is provided 4' a button x, is pressed down to the position shown in fig. 1. T is 5o The lever and pressed down at the point that, upon return from support tray fabric c, it is outside of the range of the pin s provided on the lever O ( see fig. 1), so that the nipple s cannot abut on the lever 55 and that a clearance of the presser can not take place. X When releases the button, the anklew returns to its normal position, and the machine works in the usual manner during periods of work, continuous automatic. 6 o The arrangement of the locking means, i.e. the ankle w, x, permits very simple to prevent disengagement of the presser, which is particularly important because during the working 65 it possibly occurs defects, in which the correction requires the fabric mounted mounting maintains its position.
[...].
[...] Device for the control of the fabric in the buttonhole machines, characterized in that there is combined with the levers causing the opening and ' closing of the presser, locking means which prevents activity y 5 release levers of the presser. The device is further characterized by the following points, together or separately:
a. The locking means consists of a pin that may be conducted against 8o an oscillating lever and causes the lever out of its stop position to such an extent that the lever, disengages during loss-fabric tray by abutment against this rocker arm, does not reach the latter, and that disengages the presser 85 is prevented;
b. The pin serving as locking means is subjected to the action of a spring, so that it will prevent the release of the presser only as long as it g0 is pressed downwards by means of a knob, and that it is automatically lifted off as soon as the button is released.
Said Society:
[...] - [...] a.-g.
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