Sewing – Elements – Attachment holders
Patent
1986-04-29
1987-09-29
Hunter, H. Hampton
Sewing
Elements
Attachment holders
112130, 112143, 112152, 112153, 112270, 112276, 112301, D05B 2300, D05B 7500
Patent
active
046962433
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a pneumatically operated accessory carrying device for industrial sewing machines.
More particularly, this invention relates to a device comprising: a base which can be separated into three plates suitably arranged for adapting and anchoring the device on a working plane; a gaseous fluid distributor by which a double acting cylinder is fed and also supported; and means for controlling and adjusting the stroke of an accessory holder. The elements are assembled in various configurations to adapt this device to the different sewing machines of the industry.
As is known accessories, used for cloth bordering, hemming, guiding and the like, are mounted in a fixed positions on the sewing machines. Consequently, time is wasted each time there is a removal and replacement of an accessory from the working plane. Furthermore no device is known where in addition to handling, i.e. to moving the accessories back and forth with respect to the working position, as required for making garments on home sewing machines, it also is adaptable to industrial sewing machines.
An object of the present invention is to provide a device avoiding extensive handling and sustituting of accessories and accessory holding devices. A further object of the present invention is to provide a device adaptable with suitable adjustments to industrial sewing machines.
A specific object of the present invention is to provide a pneumatically actuated accessory holding device for industrial sewing machines wherein decomposable metal milled blade base means are provided in combination which present a first seat for an accessory holding slider, a second seat for adjustable limit means, a third seat for housing rapid release means, a fourth seat means for a distributor of gaseous fluid and means for fixing the device on a working plane; fluid regulating connector means being provided on said distributor along with at least two ways for feeding a fluid; a double acting cylinder means being provided which include an adjustable moving rod means connected with an adjustable transmission leg intended for actuating said accessory holder sliding means.
This invention will be better understood by the following description and the attached drawings in which a preferred embodiment thereof will be illustrated. In the drawings:
FIG. 1 shows a top plan view of the device according to the invention wherein the working plane of a sewing machine is indicated by a point and dash line while the accessory of the sewing machine is indicated by a dashed line;
FIG. 2 shows a bottom plan view of a portion of the device of FIG. 1 rotated 180.degree.;
FIG. 3 shows a top plan view of the device of this invention where the double acting cylinder rod is shown in retracted position;
FIG. 4 shows a front elevational view of the above device with the pneumatic operating fluid distributor;
FIG. 5 shows a side back elevational partially cross sectioned view of FIG. 4 with the cylinder rod extended;
FIG. 6 shows a partially cross sectioned view of the distributor;
FIG. 7 shows some of the different working configurations of the device of this invention;
FIG. 8 shows an exploded view of the device of this invention.
According to a preferred embodiment thereof the device of this invention comprises a rigid base formed by three milled plates 1,2,3 which can be taken apart.
Between the lower plate 1 and the upper plate 2 a sliding assembly is included which is formed by a sliding blade 6a,6b packet between which a blade 5 is included. A blade 5a extends from blade 5 which extension is provided with at least two holes 5a' on which the machine accessory is attached.
The blade packet, comprising blades 6a and 6b serve to adjust the height of the position of blade 5. Both the blade packet 6a,6b and blade 5 are attached to an upper counter plate 24' and a lower counter plate 24" which run along a slot 4 of both plates 1 and 2.
Counterplate 24' engages a small block 8a at the end of limit stop 8, which small block 8a provides the seat for the eventual assembly of
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patent: 3875881 (1975-04-01), Marforio
patent: 4055127 (1977-10-01), Sharp
patent: 4202286 (1980-05-01), Freire Costas
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