Textiles: weaving – Warp manipulation – Shedding
Patent
1995-06-29
1997-10-14
Falik, Andy
Textiles: weaving
Warp manipulation
Shedding
D03C 320, D03C 324
Patent
active
056761791
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a mechanism having a plurality of electronically controlled rods for selectively raising selected threads in a warp of a weaving machine to form a shed.
2. Description of the Prior Art
The use of Jacquard-type machines and the like, designed to form a shed in flat weaver's looms, is wide-spread. However, these traditional systems have developed very little throughout the years, and still today employ practically the same features of their first models introduced in France two hundred years ago.
Such traditional devices, besides being rather bulky, operate on platforms mounted above the looms, requiring costly installations for their aerial support, and operate through complex sets of needles, cards, tie rods, etc., resulting in an extremely elaborate structure which demands expensive maintenance.
In general all of these pieces of equipment, which operate by pulling the tie rods carrying the warp threads upwards, are regarded as conventional and have caused the conceptual stagnation of the technical devices which have been used thus far.
SUMMARY OF THE INVENTION
The present invention provides a new solution, completely different from the traditional systems, since, according to the invention, the warp threads are taken upwards in a totally different manner--they are pushed upwards by a specific functional unit which may even stand on the floor, with all the advantages of an easy installation offered by this important innovation.
The attached schematic drawings (FIGS. 1 through 21) illustrate, in a simplified manner, the present invention, which consists of several functional units, working independently, arranged sequentially and mounted inside a fixed body C placed between the warp beam R and the comb P of the loom (not depicted), the units consisting of a vertically oriented rod 1 provided with a ring 2 in its center and, above this ring, a coaxial extension 3; a conventional electrical solenoid 4 with a horizontally movable shaft 5 having an opening 6 for the passage of the rod 1; a metallic sheet 7 for electrical contact and for fastening the solenoid 4 in relation to the rod 1; an intermediate vertically oriented slot 8 for guiding the portion of the rod 1 located above the solenoid 4 and coaxial to the opening 6; a lower vertically oriented slot 9 for guiding the portion of the rod 1 located below the solenoid 4 and coaxial to the opening 6; an upper vertically oriented slot 10 for guiding the extension 3 of the rod 1 and coaxial to the opening 6; a block 11, which can be moved up and down where the removable solenoid 4 is fastened and where a metallic sheet 7 and the upper, lower and intermediate slots are provided. The block also contains a wall (12) on its top, for closing the upper part of the upper slot (10); a movable plate 13 for driving the shaft 5 towards the opening 6 of the solenoid 4; a rigid shield 14 with an opening 15 for the passage of the rod 1 coaxial to upper, lower and intermediate slots, said shield being mounted below the ring 2, and the opening 15 being provided with a rim 16 for the protection and support of said ring 2.
The equipment is of simple operation due to its special structure which lifts and lowers the warp thread, passing it through the ring 2, as it can be seen in the enclosed illustrations.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a machine housing the mechanism of the present invention;
FIGS. 2-6 are partial elevations, partially in cross-section, of the lift rod and the lift rod controlling solenoid of the present invention depicting the mechanism in different stages of operation;
FIG. 7 illustrates a plurality of lift units according to the present invention;
FIG. 8 is a side view taken along the line Y--Y in FIG. 7;
FIG. 9 is a perspective view of a solenoid employed in the mechanism of the present invention; and
FIGS. 10-21 illustrate the present invention according to an alternate embodiment thereof.
DESCRIPTION OF THE PREFERRED EMBODIMENT
REFERENCES:
patent: 2204891 (1940-06-01), Hamilton
patent: 3186439 (1965-06-01), Seiler
patent: 5327750 (1994-07-01), Speich
Patent Abstract of Japan, vol. 15, No. 227 (C-0839) 16 Jun. 1991 & JP, A,03 069 626, 26 Mar. 1991--see abstract.
Falik Andy
MaqTex Maquinas Texteis Industria e Comercio LTDA-ME
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